mirror of
https://github.com/billz/raspap-webgui.git
synced 2023-10-10 13:37:24 +02:00
14681 lines
387 KiB
JavaScript
14681 lines
387 KiB
JavaScript
/*!
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* Chart.js v2.8.0
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* https://www.chartjs.org
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* (c) 2019 Chart.js Contributors
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* Released under the MIT License
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*/
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(function (global, factory) {
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typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory(function() { try { return require('moment'); } catch(e) { } }()) :
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typeof define === 'function' && define.amd ? define(['require'], function(require) { return factory(function() { try { return require('moment'); } catch(e) { } }()); }) :
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(global.Chart = factory(global.moment));
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}(this, (function (moment) { 'use strict';
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moment = moment && moment.hasOwnProperty('default') ? moment['default'] : moment;
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/* MIT license */
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var conversions = {
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rgb2hsl: rgb2hsl,
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rgb2hsv: rgb2hsv,
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rgb2hwb: rgb2hwb,
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rgb2cmyk: rgb2cmyk,
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rgb2keyword: rgb2keyword,
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rgb2xyz: rgb2xyz,
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rgb2lab: rgb2lab,
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rgb2lch: rgb2lch,
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hsl2rgb: hsl2rgb,
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hsl2hsv: hsl2hsv,
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hsl2hwb: hsl2hwb,
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hsl2cmyk: hsl2cmyk,
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hsl2keyword: hsl2keyword,
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hsv2rgb: hsv2rgb,
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hsv2hsl: hsv2hsl,
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hsv2hwb: hsv2hwb,
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hsv2cmyk: hsv2cmyk,
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hsv2keyword: hsv2keyword,
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hwb2rgb: hwb2rgb,
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hwb2hsl: hwb2hsl,
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hwb2hsv: hwb2hsv,
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hwb2cmyk: hwb2cmyk,
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hwb2keyword: hwb2keyword,
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cmyk2rgb: cmyk2rgb,
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cmyk2hsl: cmyk2hsl,
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cmyk2hsv: cmyk2hsv,
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cmyk2hwb: cmyk2hwb,
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cmyk2keyword: cmyk2keyword,
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keyword2rgb: keyword2rgb,
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keyword2hsl: keyword2hsl,
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keyword2hsv: keyword2hsv,
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keyword2hwb: keyword2hwb,
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keyword2cmyk: keyword2cmyk,
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keyword2lab: keyword2lab,
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keyword2xyz: keyword2xyz,
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xyz2rgb: xyz2rgb,
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xyz2lab: xyz2lab,
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xyz2lch: xyz2lch,
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lab2xyz: lab2xyz,
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lab2rgb: lab2rgb,
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lab2lch: lab2lch,
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lch2lab: lch2lab,
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lch2xyz: lch2xyz,
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lch2rgb: lch2rgb
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};
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function rgb2hsl(rgb) {
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var r = rgb[0]/255,
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g = rgb[1]/255,
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b = rgb[2]/255,
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min = Math.min(r, g, b),
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max = Math.max(r, g, b),
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delta = max - min,
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h, s, l;
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if (max == min)
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h = 0;
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else if (r == max)
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h = (g - b) / delta;
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else if (g == max)
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h = 2 + (b - r) / delta;
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else if (b == max)
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h = 4 + (r - g)/ delta;
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h = Math.min(h * 60, 360);
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if (h < 0)
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h += 360;
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l = (min + max) / 2;
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if (max == min)
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s = 0;
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else if (l <= 0.5)
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s = delta / (max + min);
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else
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s = delta / (2 - max - min);
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return [h, s * 100, l * 100];
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}
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function rgb2hsv(rgb) {
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var r = rgb[0],
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g = rgb[1],
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b = rgb[2],
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min = Math.min(r, g, b),
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max = Math.max(r, g, b),
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delta = max - min,
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h, s, v;
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if (max == 0)
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s = 0;
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else
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s = (delta/max * 1000)/10;
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if (max == min)
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h = 0;
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else if (r == max)
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h = (g - b) / delta;
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else if (g == max)
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h = 2 + (b - r) / delta;
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else if (b == max)
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h = 4 + (r - g) / delta;
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h = Math.min(h * 60, 360);
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if (h < 0)
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h += 360;
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v = ((max / 255) * 1000) / 10;
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return [h, s, v];
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}
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function rgb2hwb(rgb) {
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var r = rgb[0],
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g = rgb[1],
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b = rgb[2],
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h = rgb2hsl(rgb)[0],
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w = 1/255 * Math.min(r, Math.min(g, b)),
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b = 1 - 1/255 * Math.max(r, Math.max(g, b));
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return [h, w * 100, b * 100];
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}
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function rgb2cmyk(rgb) {
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var r = rgb[0] / 255,
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g = rgb[1] / 255,
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b = rgb[2] / 255,
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c, m, y, k;
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k = Math.min(1 - r, 1 - g, 1 - b);
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c = (1 - r - k) / (1 - k) || 0;
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m = (1 - g - k) / (1 - k) || 0;
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y = (1 - b - k) / (1 - k) || 0;
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return [c * 100, m * 100, y * 100, k * 100];
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}
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function rgb2keyword(rgb) {
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return reverseKeywords[JSON.stringify(rgb)];
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}
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function rgb2xyz(rgb) {
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var r = rgb[0] / 255,
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g = rgb[1] / 255,
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b = rgb[2] / 255;
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// assume sRGB
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r = r > 0.04045 ? Math.pow(((r + 0.055) / 1.055), 2.4) : (r / 12.92);
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g = g > 0.04045 ? Math.pow(((g + 0.055) / 1.055), 2.4) : (g / 12.92);
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b = b > 0.04045 ? Math.pow(((b + 0.055) / 1.055), 2.4) : (b / 12.92);
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var x = (r * 0.4124) + (g * 0.3576) + (b * 0.1805);
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var y = (r * 0.2126) + (g * 0.7152) + (b * 0.0722);
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var z = (r * 0.0193) + (g * 0.1192) + (b * 0.9505);
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return [x * 100, y *100, z * 100];
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}
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function rgb2lab(rgb) {
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var xyz = rgb2xyz(rgb),
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x = xyz[0],
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y = xyz[1],
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z = xyz[2],
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l, a, b;
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x /= 95.047;
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y /= 100;
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z /= 108.883;
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x = x > 0.008856 ? Math.pow(x, 1/3) : (7.787 * x) + (16 / 116);
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y = y > 0.008856 ? Math.pow(y, 1/3) : (7.787 * y) + (16 / 116);
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z = z > 0.008856 ? Math.pow(z, 1/3) : (7.787 * z) + (16 / 116);
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l = (116 * y) - 16;
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a = 500 * (x - y);
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b = 200 * (y - z);
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return [l, a, b];
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}
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function rgb2lch(args) {
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return lab2lch(rgb2lab(args));
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}
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function hsl2rgb(hsl) {
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var h = hsl[0] / 360,
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s = hsl[1] / 100,
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l = hsl[2] / 100,
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t1, t2, t3, rgb, val;
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if (s == 0) {
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val = l * 255;
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return [val, val, val];
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}
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if (l < 0.5)
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t2 = l * (1 + s);
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else
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t2 = l + s - l * s;
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t1 = 2 * l - t2;
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rgb = [0, 0, 0];
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for (var i = 0; i < 3; i++) {
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t3 = h + 1 / 3 * - (i - 1);
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t3 < 0 && t3++;
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t3 > 1 && t3--;
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if (6 * t3 < 1)
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val = t1 + (t2 - t1) * 6 * t3;
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else if (2 * t3 < 1)
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val = t2;
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else if (3 * t3 < 2)
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val = t1 + (t2 - t1) * (2 / 3 - t3) * 6;
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else
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val = t1;
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rgb[i] = val * 255;
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}
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return rgb;
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}
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function hsl2hsv(hsl) {
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var h = hsl[0],
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s = hsl[1] / 100,
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l = hsl[2] / 100,
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sv, v;
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if(l === 0) {
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// no need to do calc on black
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// also avoids divide by 0 error
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return [0, 0, 0];
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}
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l *= 2;
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s *= (l <= 1) ? l : 2 - l;
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v = (l + s) / 2;
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sv = (2 * s) / (l + s);
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return [h, sv * 100, v * 100];
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}
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function hsl2hwb(args) {
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return rgb2hwb(hsl2rgb(args));
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}
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function hsl2cmyk(args) {
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return rgb2cmyk(hsl2rgb(args));
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}
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function hsl2keyword(args) {
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return rgb2keyword(hsl2rgb(args));
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}
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function hsv2rgb(hsv) {
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var h = hsv[0] / 60,
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s = hsv[1] / 100,
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v = hsv[2] / 100,
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hi = Math.floor(h) % 6;
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var f = h - Math.floor(h),
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p = 255 * v * (1 - s),
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q = 255 * v * (1 - (s * f)),
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t = 255 * v * (1 - (s * (1 - f))),
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v = 255 * v;
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switch(hi) {
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case 0:
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return [v, t, p];
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case 1:
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return [q, v, p];
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case 2:
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return [p, v, t];
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case 3:
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return [p, q, v];
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case 4:
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return [t, p, v];
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case 5:
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return [v, p, q];
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}
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}
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function hsv2hsl(hsv) {
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var h = hsv[0],
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s = hsv[1] / 100,
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v = hsv[2] / 100,
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sl, l;
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l = (2 - s) * v;
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sl = s * v;
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sl /= (l <= 1) ? l : 2 - l;
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sl = sl || 0;
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l /= 2;
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return [h, sl * 100, l * 100];
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}
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function hsv2hwb(args) {
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return rgb2hwb(hsv2rgb(args))
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}
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function hsv2cmyk(args) {
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return rgb2cmyk(hsv2rgb(args));
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}
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function hsv2keyword(args) {
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return rgb2keyword(hsv2rgb(args));
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}
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// http://dev.w3.org/csswg/css-color/#hwb-to-rgb
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function hwb2rgb(hwb) {
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var h = hwb[0] / 360,
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wh = hwb[1] / 100,
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bl = hwb[2] / 100,
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ratio = wh + bl,
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i, v, f, n;
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// wh + bl cant be > 1
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if (ratio > 1) {
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wh /= ratio;
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bl /= ratio;
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}
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i = Math.floor(6 * h);
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v = 1 - bl;
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f = 6 * h - i;
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if ((i & 0x01) != 0) {
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f = 1 - f;
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}
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n = wh + f * (v - wh); // linear interpolation
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switch (i) {
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default:
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case 6:
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case 0: r = v; g = n; b = wh; break;
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case 1: r = n; g = v; b = wh; break;
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case 2: r = wh; g = v; b = n; break;
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case 3: r = wh; g = n; b = v; break;
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case 4: r = n; g = wh; b = v; break;
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case 5: r = v; g = wh; b = n; break;
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}
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return [r * 255, g * 255, b * 255];
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}
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function hwb2hsl(args) {
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return rgb2hsl(hwb2rgb(args));
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}
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function hwb2hsv(args) {
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return rgb2hsv(hwb2rgb(args));
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}
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function hwb2cmyk(args) {
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return rgb2cmyk(hwb2rgb(args));
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}
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function hwb2keyword(args) {
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return rgb2keyword(hwb2rgb(args));
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}
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function cmyk2rgb(cmyk) {
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var c = cmyk[0] / 100,
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m = cmyk[1] / 100,
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y = cmyk[2] / 100,
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k = cmyk[3] / 100,
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r, g, b;
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r = 1 - Math.min(1, c * (1 - k) + k);
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g = 1 - Math.min(1, m * (1 - k) + k);
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b = 1 - Math.min(1, y * (1 - k) + k);
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return [r * 255, g * 255, b * 255];
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}
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function cmyk2hsl(args) {
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return rgb2hsl(cmyk2rgb(args));
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}
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function cmyk2hsv(args) {
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return rgb2hsv(cmyk2rgb(args));
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}
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function cmyk2hwb(args) {
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return rgb2hwb(cmyk2rgb(args));
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}
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function cmyk2keyword(args) {
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return rgb2keyword(cmyk2rgb(args));
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}
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function xyz2rgb(xyz) {
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var x = xyz[0] / 100,
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y = xyz[1] / 100,
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z = xyz[2] / 100,
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r, g, b;
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r = (x * 3.2406) + (y * -1.5372) + (z * -0.4986);
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g = (x * -0.9689) + (y * 1.8758) + (z * 0.0415);
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b = (x * 0.0557) + (y * -0.2040) + (z * 1.0570);
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// assume sRGB
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r = r > 0.0031308 ? ((1.055 * Math.pow(r, 1.0 / 2.4)) - 0.055)
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: r = (r * 12.92);
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g = g > 0.0031308 ? ((1.055 * Math.pow(g, 1.0 / 2.4)) - 0.055)
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: g = (g * 12.92);
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b = b > 0.0031308 ? ((1.055 * Math.pow(b, 1.0 / 2.4)) - 0.055)
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: b = (b * 12.92);
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r = Math.min(Math.max(0, r), 1);
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g = Math.min(Math.max(0, g), 1);
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b = Math.min(Math.max(0, b), 1);
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return [r * 255, g * 255, b * 255];
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}
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function xyz2lab(xyz) {
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var x = xyz[0],
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y = xyz[1],
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z = xyz[2],
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l, a, b;
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x /= 95.047;
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y /= 100;
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z /= 108.883;
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x = x > 0.008856 ? Math.pow(x, 1/3) : (7.787 * x) + (16 / 116);
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y = y > 0.008856 ? Math.pow(y, 1/3) : (7.787 * y) + (16 / 116);
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z = z > 0.008856 ? Math.pow(z, 1/3) : (7.787 * z) + (16 / 116);
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l = (116 * y) - 16;
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a = 500 * (x - y);
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b = 200 * (y - z);
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return [l, a, b];
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}
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function xyz2lch(args) {
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return lab2lch(xyz2lab(args));
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}
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function lab2xyz(lab) {
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var l = lab[0],
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a = lab[1],
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b = lab[2],
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x, y, z, y2;
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if (l <= 8) {
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y = (l * 100) / 903.3;
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y2 = (7.787 * (y / 100)) + (16 / 116);
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} else {
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y = 100 * Math.pow((l + 16) / 116, 3);
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y2 = Math.pow(y / 100, 1/3);
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}
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x = x / 95.047 <= 0.008856 ? x = (95.047 * ((a / 500) + y2 - (16 / 116))) / 7.787 : 95.047 * Math.pow((a / 500) + y2, 3);
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z = z / 108.883 <= 0.008859 ? z = (108.883 * (y2 - (b / 200) - (16 / 116))) / 7.787 : 108.883 * Math.pow(y2 - (b / 200), 3);
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return [x, y, z];
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}
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function lab2lch(lab) {
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var l = lab[0],
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a = lab[1],
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b = lab[2],
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hr, h, c;
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hr = Math.atan2(b, a);
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h = hr * 360 / 2 / Math.PI;
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if (h < 0) {
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h += 360;
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}
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c = Math.sqrt(a * a + b * b);
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return [l, c, h];
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}
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function lab2rgb(args) {
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return xyz2rgb(lab2xyz(args));
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}
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function lch2lab(lch) {
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var l = lch[0],
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c = lch[1],
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h = lch[2],
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a, b, hr;
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hr = h / 360 * 2 * Math.PI;
|
|
a = c * Math.cos(hr);
|
|
b = c * Math.sin(hr);
|
|
return [l, a, b];
|
|
}
|
|
|
|
function lch2xyz(args) {
|
|
return lab2xyz(lch2lab(args));
|
|
}
|
|
|
|
function lch2rgb(args) {
|
|
return lab2rgb(lch2lab(args));
|
|
}
|
|
|
|
function keyword2rgb(keyword) {
|
|
return cssKeywords[keyword];
|
|
}
|
|
|
|
function keyword2hsl(args) {
|
|
return rgb2hsl(keyword2rgb(args));
|
|
}
|
|
|
|
function keyword2hsv(args) {
|
|
return rgb2hsv(keyword2rgb(args));
|
|
}
|
|
|
|
function keyword2hwb(args) {
|
|
return rgb2hwb(keyword2rgb(args));
|
|
}
|
|
|
|
function keyword2cmyk(args) {
|
|
return rgb2cmyk(keyword2rgb(args));
|
|
}
|
|
|
|
function keyword2lab(args) {
|
|
return rgb2lab(keyword2rgb(args));
|
|
}
|
|
|
|
function keyword2xyz(args) {
|
|
return rgb2xyz(keyword2rgb(args));
|
|
}
|
|
|
|
var cssKeywords = {
|
|
aliceblue: [240,248,255],
|
|
antiquewhite: [250,235,215],
|
|
aqua: [0,255,255],
|
|
aquamarine: [127,255,212],
|
|
azure: [240,255,255],
|
|
beige: [245,245,220],
|
|
bisque: [255,228,196],
|
|
black: [0,0,0],
|
|
blanchedalmond: [255,235,205],
|
|
blue: [0,0,255],
|
|
blueviolet: [138,43,226],
|
|
brown: [165,42,42],
|
|
burlywood: [222,184,135],
|
|
cadetblue: [95,158,160],
|
|
chartreuse: [127,255,0],
|
|
chocolate: [210,105,30],
|
|
coral: [255,127,80],
|
|
cornflowerblue: [100,149,237],
|
|
cornsilk: [255,248,220],
|
|
crimson: [220,20,60],
|
|
cyan: [0,255,255],
|
|
darkblue: [0,0,139],
|
|
darkcyan: [0,139,139],
|
|
darkgoldenrod: [184,134,11],
|
|
darkgray: [169,169,169],
|
|
darkgreen: [0,100,0],
|
|
darkgrey: [169,169,169],
|
|
darkkhaki: [189,183,107],
|
|
darkmagenta: [139,0,139],
|
|
darkolivegreen: [85,107,47],
|
|
darkorange: [255,140,0],
|
|
darkorchid: [153,50,204],
|
|
darkred: [139,0,0],
|
|
darksalmon: [233,150,122],
|
|
darkseagreen: [143,188,143],
|
|
darkslateblue: [72,61,139],
|
|
darkslategray: [47,79,79],
|
|
darkslategrey: [47,79,79],
|
|
darkturquoise: [0,206,209],
|
|
darkviolet: [148,0,211],
|
|
deeppink: [255,20,147],
|
|
deepskyblue: [0,191,255],
|
|
dimgray: [105,105,105],
|
|
dimgrey: [105,105,105],
|
|
dodgerblue: [30,144,255],
|
|
firebrick: [178,34,34],
|
|
floralwhite: [255,250,240],
|
|
forestgreen: [34,139,34],
|
|
fuchsia: [255,0,255],
|
|
gainsboro: [220,220,220],
|
|
ghostwhite: [248,248,255],
|
|
gold: [255,215,0],
|
|
goldenrod: [218,165,32],
|
|
gray: [128,128,128],
|
|
green: [0,128,0],
|
|
greenyellow: [173,255,47],
|
|
grey: [128,128,128],
|
|
honeydew: [240,255,240],
|
|
hotpink: [255,105,180],
|
|
indianred: [205,92,92],
|
|
indigo: [75,0,130],
|
|
ivory: [255,255,240],
|
|
khaki: [240,230,140],
|
|
lavender: [230,230,250],
|
|
lavenderblush: [255,240,245],
|
|
lawngreen: [124,252,0],
|
|
lemonchiffon: [255,250,205],
|
|
lightblue: [173,216,230],
|
|
lightcoral: [240,128,128],
|
|
lightcyan: [224,255,255],
|
|
lightgoldenrodyellow: [250,250,210],
|
|
lightgray: [211,211,211],
|
|
lightgreen: [144,238,144],
|
|
lightgrey: [211,211,211],
|
|
lightpink: [255,182,193],
|
|
lightsalmon: [255,160,122],
|
|
lightseagreen: [32,178,170],
|
|
lightskyblue: [135,206,250],
|
|
lightslategray: [119,136,153],
|
|
lightslategrey: [119,136,153],
|
|
lightsteelblue: [176,196,222],
|
|
lightyellow: [255,255,224],
|
|
lime: [0,255,0],
|
|
limegreen: [50,205,50],
|
|
linen: [250,240,230],
|
|
magenta: [255,0,255],
|
|
maroon: [128,0,0],
|
|
mediumaquamarine: [102,205,170],
|
|
mediumblue: [0,0,205],
|
|
mediumorchid: [186,85,211],
|
|
mediumpurple: [147,112,219],
|
|
mediumseagreen: [60,179,113],
|
|
mediumslateblue: [123,104,238],
|
|
mediumspringgreen: [0,250,154],
|
|
mediumturquoise: [72,209,204],
|
|
mediumvioletred: [199,21,133],
|
|
midnightblue: [25,25,112],
|
|
mintcream: [245,255,250],
|
|
mistyrose: [255,228,225],
|
|
moccasin: [255,228,181],
|
|
navajowhite: [255,222,173],
|
|
navy: [0,0,128],
|
|
oldlace: [253,245,230],
|
|
olive: [128,128,0],
|
|
olivedrab: [107,142,35],
|
|
orange: [255,165,0],
|
|
orangered: [255,69,0],
|
|
orchid: [218,112,214],
|
|
palegoldenrod: [238,232,170],
|
|
palegreen: [152,251,152],
|
|
paleturquoise: [175,238,238],
|
|
palevioletred: [219,112,147],
|
|
papayawhip: [255,239,213],
|
|
peachpuff: [255,218,185],
|
|
peru: [205,133,63],
|
|
pink: [255,192,203],
|
|
plum: [221,160,221],
|
|
powderblue: [176,224,230],
|
|
purple: [128,0,128],
|
|
rebeccapurple: [102, 51, 153],
|
|
red: [255,0,0],
|
|
rosybrown: [188,143,143],
|
|
royalblue: [65,105,225],
|
|
saddlebrown: [139,69,19],
|
|
salmon: [250,128,114],
|
|
sandybrown: [244,164,96],
|
|
seagreen: [46,139,87],
|
|
seashell: [255,245,238],
|
|
sienna: [160,82,45],
|
|
silver: [192,192,192],
|
|
skyblue: [135,206,235],
|
|
slateblue: [106,90,205],
|
|
slategray: [112,128,144],
|
|
slategrey: [112,128,144],
|
|
snow: [255,250,250],
|
|
springgreen: [0,255,127],
|
|
steelblue: [70,130,180],
|
|
tan: [210,180,140],
|
|
teal: [0,128,128],
|
|
thistle: [216,191,216],
|
|
tomato: [255,99,71],
|
|
turquoise: [64,224,208],
|
|
violet: [238,130,238],
|
|
wheat: [245,222,179],
|
|
white: [255,255,255],
|
|
whitesmoke: [245,245,245],
|
|
yellow: [255,255,0],
|
|
yellowgreen: [154,205,50]
|
|
};
|
|
|
|
var reverseKeywords = {};
|
|
for (var key in cssKeywords) {
|
|
reverseKeywords[JSON.stringify(cssKeywords[key])] = key;
|
|
}
|
|
|
|
var convert = function() {
|
|
return new Converter();
|
|
};
|
|
|
|
for (var func in conversions) {
|
|
// export Raw versions
|
|
convert[func + "Raw"] = (function(func) {
|
|
// accept array or plain args
|
|
return function(arg) {
|
|
if (typeof arg == "number")
|
|
arg = Array.prototype.slice.call(arguments);
|
|
return conversions[func](arg);
|
|
}
|
|
})(func);
|
|
|
|
var pair = /(\w+)2(\w+)/.exec(func),
|
|
from = pair[1],
|
|
to = pair[2];
|
|
|
|
// export rgb2hsl and ["rgb"]["hsl"]
|
|
convert[from] = convert[from] || {};
|
|
|
|
convert[from][to] = convert[func] = (function(func) {
|
|
return function(arg) {
|
|
if (typeof arg == "number")
|
|
arg = Array.prototype.slice.call(arguments);
|
|
|
|
var val = conversions[func](arg);
|
|
if (typeof val == "string" || val === undefined)
|
|
return val; // keyword
|
|
|
|
for (var i = 0; i < val.length; i++)
|
|
val[i] = Math.round(val[i]);
|
|
return val;
|
|
}
|
|
})(func);
|
|
}
|
|
|
|
|
|
/* Converter does lazy conversion and caching */
|
|
var Converter = function() {
|
|
this.convs = {};
|
|
};
|
|
|
|
/* Either get the values for a space or
|
|
set the values for a space, depending on args */
|
|
Converter.prototype.routeSpace = function(space, args) {
|
|
var values = args[0];
|
|
if (values === undefined) {
|
|
// color.rgb()
|
|
return this.getValues(space);
|
|
}
|
|
// color.rgb(10, 10, 10)
|
|
if (typeof values == "number") {
|
|
values = Array.prototype.slice.call(args);
|
|
}
|
|
|
|
return this.setValues(space, values);
|
|
};
|
|
|
|
/* Set the values for a space, invalidating cache */
|
|
Converter.prototype.setValues = function(space, values) {
|
|
this.space = space;
|
|
this.convs = {};
|
|
this.convs[space] = values;
|
|
return this;
|
|
};
|
|
|
|
/* Get the values for a space. If there's already
|
|
a conversion for the space, fetch it, otherwise
|
|
compute it */
|
|
Converter.prototype.getValues = function(space) {
|
|
var vals = this.convs[space];
|
|
if (!vals) {
|
|
var fspace = this.space,
|
|
from = this.convs[fspace];
|
|
vals = convert[fspace][space](from);
|
|
|
|
this.convs[space] = vals;
|
|
}
|
|
return vals;
|
|
};
|
|
|
|
["rgb", "hsl", "hsv", "cmyk", "keyword"].forEach(function(space) {
|
|
Converter.prototype[space] = function(vals) {
|
|
return this.routeSpace(space, arguments);
|
|
};
|
|
});
|
|
|
|
var colorConvert = convert;
|
|
|
|
var colorName = {
|
|
"aliceblue": [240, 248, 255],
|
|
"antiquewhite": [250, 235, 215],
|
|
"aqua": [0, 255, 255],
|
|
"aquamarine": [127, 255, 212],
|
|
"azure": [240, 255, 255],
|
|
"beige": [245, 245, 220],
|
|
"bisque": [255, 228, 196],
|
|
"black": [0, 0, 0],
|
|
"blanchedalmond": [255, 235, 205],
|
|
"blue": [0, 0, 255],
|
|
"blueviolet": [138, 43, 226],
|
|
"brown": [165, 42, 42],
|
|
"burlywood": [222, 184, 135],
|
|
"cadetblue": [95, 158, 160],
|
|
"chartreuse": [127, 255, 0],
|
|
"chocolate": [210, 105, 30],
|
|
"coral": [255, 127, 80],
|
|
"cornflowerblue": [100, 149, 237],
|
|
"cornsilk": [255, 248, 220],
|
|
"crimson": [220, 20, 60],
|
|
"cyan": [0, 255, 255],
|
|
"darkblue": [0, 0, 139],
|
|
"darkcyan": [0, 139, 139],
|
|
"darkgoldenrod": [184, 134, 11],
|
|
"darkgray": [169, 169, 169],
|
|
"darkgreen": [0, 100, 0],
|
|
"darkgrey": [169, 169, 169],
|
|
"darkkhaki": [189, 183, 107],
|
|
"darkmagenta": [139, 0, 139],
|
|
"darkolivegreen": [85, 107, 47],
|
|
"darkorange": [255, 140, 0],
|
|
"darkorchid": [153, 50, 204],
|
|
"darkred": [139, 0, 0],
|
|
"darksalmon": [233, 150, 122],
|
|
"darkseagreen": [143, 188, 143],
|
|
"darkslateblue": [72, 61, 139],
|
|
"darkslategray": [47, 79, 79],
|
|
"darkslategrey": [47, 79, 79],
|
|
"darkturquoise": [0, 206, 209],
|
|
"darkviolet": [148, 0, 211],
|
|
"deeppink": [255, 20, 147],
|
|
"deepskyblue": [0, 191, 255],
|
|
"dimgray": [105, 105, 105],
|
|
"dimgrey": [105, 105, 105],
|
|
"dodgerblue": [30, 144, 255],
|
|
"firebrick": [178, 34, 34],
|
|
"floralwhite": [255, 250, 240],
|
|
"forestgreen": [34, 139, 34],
|
|
"fuchsia": [255, 0, 255],
|
|
"gainsboro": [220, 220, 220],
|
|
"ghostwhite": [248, 248, 255],
|
|
"gold": [255, 215, 0],
|
|
"goldenrod": [218, 165, 32],
|
|
"gray": [128, 128, 128],
|
|
"green": [0, 128, 0],
|
|
"greenyellow": [173, 255, 47],
|
|
"grey": [128, 128, 128],
|
|
"honeydew": [240, 255, 240],
|
|
"hotpink": [255, 105, 180],
|
|
"indianred": [205, 92, 92],
|
|
"indigo": [75, 0, 130],
|
|
"ivory": [255, 255, 240],
|
|
"khaki": [240, 230, 140],
|
|
"lavender": [230, 230, 250],
|
|
"lavenderblush": [255, 240, 245],
|
|
"lawngreen": [124, 252, 0],
|
|
"lemonchiffon": [255, 250, 205],
|
|
"lightblue": [173, 216, 230],
|
|
"lightcoral": [240, 128, 128],
|
|
"lightcyan": [224, 255, 255],
|
|
"lightgoldenrodyellow": [250, 250, 210],
|
|
"lightgray": [211, 211, 211],
|
|
"lightgreen": [144, 238, 144],
|
|
"lightgrey": [211, 211, 211],
|
|
"lightpink": [255, 182, 193],
|
|
"lightsalmon": [255, 160, 122],
|
|
"lightseagreen": [32, 178, 170],
|
|
"lightskyblue": [135, 206, 250],
|
|
"lightslategray": [119, 136, 153],
|
|
"lightslategrey": [119, 136, 153],
|
|
"lightsteelblue": [176, 196, 222],
|
|
"lightyellow": [255, 255, 224],
|
|
"lime": [0, 255, 0],
|
|
"limegreen": [50, 205, 50],
|
|
"linen": [250, 240, 230],
|
|
"magenta": [255, 0, 255],
|
|
"maroon": [128, 0, 0],
|
|
"mediumaquamarine": [102, 205, 170],
|
|
"mediumblue": [0, 0, 205],
|
|
"mediumorchid": [186, 85, 211],
|
|
"mediumpurple": [147, 112, 219],
|
|
"mediumseagreen": [60, 179, 113],
|
|
"mediumslateblue": [123, 104, 238],
|
|
"mediumspringgreen": [0, 250, 154],
|
|
"mediumturquoise": [72, 209, 204],
|
|
"mediumvioletred": [199, 21, 133],
|
|
"midnightblue": [25, 25, 112],
|
|
"mintcream": [245, 255, 250],
|
|
"mistyrose": [255, 228, 225],
|
|
"moccasin": [255, 228, 181],
|
|
"navajowhite": [255, 222, 173],
|
|
"navy": [0, 0, 128],
|
|
"oldlace": [253, 245, 230],
|
|
"olive": [128, 128, 0],
|
|
"olivedrab": [107, 142, 35],
|
|
"orange": [255, 165, 0],
|
|
"orangered": [255, 69, 0],
|
|
"orchid": [218, 112, 214],
|
|
"palegoldenrod": [238, 232, 170],
|
|
"palegreen": [152, 251, 152],
|
|
"paleturquoise": [175, 238, 238],
|
|
"palevioletred": [219, 112, 147],
|
|
"papayawhip": [255, 239, 213],
|
|
"peachpuff": [255, 218, 185],
|
|
"peru": [205, 133, 63],
|
|
"pink": [255, 192, 203],
|
|
"plum": [221, 160, 221],
|
|
"powderblue": [176, 224, 230],
|
|
"purple": [128, 0, 128],
|
|
"rebeccapurple": [102, 51, 153],
|
|
"red": [255, 0, 0],
|
|
"rosybrown": [188, 143, 143],
|
|
"royalblue": [65, 105, 225],
|
|
"saddlebrown": [139, 69, 19],
|
|
"salmon": [250, 128, 114],
|
|
"sandybrown": [244, 164, 96],
|
|
"seagreen": [46, 139, 87],
|
|
"seashell": [255, 245, 238],
|
|
"sienna": [160, 82, 45],
|
|
"silver": [192, 192, 192],
|
|
"skyblue": [135, 206, 235],
|
|
"slateblue": [106, 90, 205],
|
|
"slategray": [112, 128, 144],
|
|
"slategrey": [112, 128, 144],
|
|
"snow": [255, 250, 250],
|
|
"springgreen": [0, 255, 127],
|
|
"steelblue": [70, 130, 180],
|
|
"tan": [210, 180, 140],
|
|
"teal": [0, 128, 128],
|
|
"thistle": [216, 191, 216],
|
|
"tomato": [255, 99, 71],
|
|
"turquoise": [64, 224, 208],
|
|
"violet": [238, 130, 238],
|
|
"wheat": [245, 222, 179],
|
|
"white": [255, 255, 255],
|
|
"whitesmoke": [245, 245, 245],
|
|
"yellow": [255, 255, 0],
|
|
"yellowgreen": [154, 205, 50]
|
|
};
|
|
|
|
/* MIT license */
|
|
|
|
|
|
var colorString = {
|
|
getRgba: getRgba,
|
|
getHsla: getHsla,
|
|
getRgb: getRgb,
|
|
getHsl: getHsl,
|
|
getHwb: getHwb,
|
|
getAlpha: getAlpha,
|
|
|
|
hexString: hexString,
|
|
rgbString: rgbString,
|
|
rgbaString: rgbaString,
|
|
percentString: percentString,
|
|
percentaString: percentaString,
|
|
hslString: hslString,
|
|
hslaString: hslaString,
|
|
hwbString: hwbString,
|
|
keyword: keyword
|
|
};
|
|
|
|
function getRgba(string) {
|
|
if (!string) {
|
|
return;
|
|
}
|
|
var abbr = /^#([a-fA-F0-9]{3,4})$/i,
|
|
hex = /^#([a-fA-F0-9]{6}([a-fA-F0-9]{2})?)$/i,
|
|
rgba = /^rgba?\(\s*([+-]?\d+)\s*,\s*([+-]?\d+)\s*,\s*([+-]?\d+)\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)$/i,
|
|
per = /^rgba?\(\s*([+-]?[\d\.]+)\%\s*,\s*([+-]?[\d\.]+)\%\s*,\s*([+-]?[\d\.]+)\%\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)$/i,
|
|
keyword = /(\w+)/;
|
|
|
|
var rgb = [0, 0, 0],
|
|
a = 1,
|
|
match = string.match(abbr),
|
|
hexAlpha = "";
|
|
if (match) {
|
|
match = match[1];
|
|
hexAlpha = match[3];
|
|
for (var i = 0; i < rgb.length; i++) {
|
|
rgb[i] = parseInt(match[i] + match[i], 16);
|
|
}
|
|
if (hexAlpha) {
|
|
a = Math.round((parseInt(hexAlpha + hexAlpha, 16) / 255) * 100) / 100;
|
|
}
|
|
}
|
|
else if (match = string.match(hex)) {
|
|
hexAlpha = match[2];
|
|
match = match[1];
|
|
for (var i = 0; i < rgb.length; i++) {
|
|
rgb[i] = parseInt(match.slice(i * 2, i * 2 + 2), 16);
|
|
}
|
|
if (hexAlpha) {
|
|
a = Math.round((parseInt(hexAlpha, 16) / 255) * 100) / 100;
|
|
}
|
|
}
|
|
else if (match = string.match(rgba)) {
|
|
for (var i = 0; i < rgb.length; i++) {
|
|
rgb[i] = parseInt(match[i + 1]);
|
|
}
|
|
a = parseFloat(match[4]);
|
|
}
|
|
else if (match = string.match(per)) {
|
|
for (var i = 0; i < rgb.length; i++) {
|
|
rgb[i] = Math.round(parseFloat(match[i + 1]) * 2.55);
|
|
}
|
|
a = parseFloat(match[4]);
|
|
}
|
|
else if (match = string.match(keyword)) {
|
|
if (match[1] == "transparent") {
|
|
return [0, 0, 0, 0];
|
|
}
|
|
rgb = colorName[match[1]];
|
|
if (!rgb) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
for (var i = 0; i < rgb.length; i++) {
|
|
rgb[i] = scale(rgb[i], 0, 255);
|
|
}
|
|
if (!a && a != 0) {
|
|
a = 1;
|
|
}
|
|
else {
|
|
a = scale(a, 0, 1);
|
|
}
|
|
rgb[3] = a;
|
|
return rgb;
|
|
}
|
|
|
|
function getHsla(string) {
|
|
if (!string) {
|
|
return;
|
|
}
|
|
var hsl = /^hsla?\(\s*([+-]?\d+)(?:deg)?\s*,\s*([+-]?[\d\.]+)%\s*,\s*([+-]?[\d\.]+)%\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)/;
|
|
var match = string.match(hsl);
|
|
if (match) {
|
|
var alpha = parseFloat(match[4]);
|
|
var h = scale(parseInt(match[1]), 0, 360),
|
|
s = scale(parseFloat(match[2]), 0, 100),
|
|
l = scale(parseFloat(match[3]), 0, 100),
|
|
a = scale(isNaN(alpha) ? 1 : alpha, 0, 1);
|
|
return [h, s, l, a];
|
|
}
|
|
}
|
|
|
|
function getHwb(string) {
|
|
if (!string) {
|
|
return;
|
|
}
|
|
var hwb = /^hwb\(\s*([+-]?\d+)(?:deg)?\s*,\s*([+-]?[\d\.]+)%\s*,\s*([+-]?[\d\.]+)%\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)/;
|
|
var match = string.match(hwb);
|
|
if (match) {
|
|
var alpha = parseFloat(match[4]);
|
|
var h = scale(parseInt(match[1]), 0, 360),
|
|
w = scale(parseFloat(match[2]), 0, 100),
|
|
b = scale(parseFloat(match[3]), 0, 100),
|
|
a = scale(isNaN(alpha) ? 1 : alpha, 0, 1);
|
|
return [h, w, b, a];
|
|
}
|
|
}
|
|
|
|
function getRgb(string) {
|
|
var rgba = getRgba(string);
|
|
return rgba && rgba.slice(0, 3);
|
|
}
|
|
|
|
function getHsl(string) {
|
|
var hsla = getHsla(string);
|
|
return hsla && hsla.slice(0, 3);
|
|
}
|
|
|
|
function getAlpha(string) {
|
|
var vals = getRgba(string);
|
|
if (vals) {
|
|
return vals[3];
|
|
}
|
|
else if (vals = getHsla(string)) {
|
|
return vals[3];
|
|
}
|
|
else if (vals = getHwb(string)) {
|
|
return vals[3];
|
|
}
|
|
}
|
|
|
|
// generators
|
|
function hexString(rgba, a) {
|
|
var a = (a !== undefined && rgba.length === 3) ? a : rgba[3];
|
|
return "#" + hexDouble(rgba[0])
|
|
+ hexDouble(rgba[1])
|
|
+ hexDouble(rgba[2])
|
|
+ (
|
|
(a >= 0 && a < 1)
|
|
? hexDouble(Math.round(a * 255))
|
|
: ""
|
|
);
|
|
}
|
|
|
|
function rgbString(rgba, alpha) {
|
|
if (alpha < 1 || (rgba[3] && rgba[3] < 1)) {
|
|
return rgbaString(rgba, alpha);
|
|
}
|
|
return "rgb(" + rgba[0] + ", " + rgba[1] + ", " + rgba[2] + ")";
|
|
}
|
|
|
|
function rgbaString(rgba, alpha) {
|
|
if (alpha === undefined) {
|
|
alpha = (rgba[3] !== undefined ? rgba[3] : 1);
|
|
}
|
|
return "rgba(" + rgba[0] + ", " + rgba[1] + ", " + rgba[2]
|
|
+ ", " + alpha + ")";
|
|
}
|
|
|
|
function percentString(rgba, alpha) {
|
|
if (alpha < 1 || (rgba[3] && rgba[3] < 1)) {
|
|
return percentaString(rgba, alpha);
|
|
}
|
|
var r = Math.round(rgba[0]/255 * 100),
|
|
g = Math.round(rgba[1]/255 * 100),
|
|
b = Math.round(rgba[2]/255 * 100);
|
|
|
|
return "rgb(" + r + "%, " + g + "%, " + b + "%)";
|
|
}
|
|
|
|
function percentaString(rgba, alpha) {
|
|
var r = Math.round(rgba[0]/255 * 100),
|
|
g = Math.round(rgba[1]/255 * 100),
|
|
b = Math.round(rgba[2]/255 * 100);
|
|
return "rgba(" + r + "%, " + g + "%, " + b + "%, " + (alpha || rgba[3] || 1) + ")";
|
|
}
|
|
|
|
function hslString(hsla, alpha) {
|
|
if (alpha < 1 || (hsla[3] && hsla[3] < 1)) {
|
|
return hslaString(hsla, alpha);
|
|
}
|
|
return "hsl(" + hsla[0] + ", " + hsla[1] + "%, " + hsla[2] + "%)";
|
|
}
|
|
|
|
function hslaString(hsla, alpha) {
|
|
if (alpha === undefined) {
|
|
alpha = (hsla[3] !== undefined ? hsla[3] : 1);
|
|
}
|
|
return "hsla(" + hsla[0] + ", " + hsla[1] + "%, " + hsla[2] + "%, "
|
|
+ alpha + ")";
|
|
}
|
|
|
|
// hwb is a bit different than rgb(a) & hsl(a) since there is no alpha specific syntax
|
|
// (hwb have alpha optional & 1 is default value)
|
|
function hwbString(hwb, alpha) {
|
|
if (alpha === undefined) {
|
|
alpha = (hwb[3] !== undefined ? hwb[3] : 1);
|
|
}
|
|
return "hwb(" + hwb[0] + ", " + hwb[1] + "%, " + hwb[2] + "%"
|
|
+ (alpha !== undefined && alpha !== 1 ? ", " + alpha : "") + ")";
|
|
}
|
|
|
|
function keyword(rgb) {
|
|
return reverseNames[rgb.slice(0, 3)];
|
|
}
|
|
|
|
// helpers
|
|
function scale(num, min, max) {
|
|
return Math.min(Math.max(min, num), max);
|
|
}
|
|
|
|
function hexDouble(num) {
|
|
var str = num.toString(16).toUpperCase();
|
|
return (str.length < 2) ? "0" + str : str;
|
|
}
|
|
|
|
|
|
//create a list of reverse color names
|
|
var reverseNames = {};
|
|
for (var name in colorName) {
|
|
reverseNames[colorName[name]] = name;
|
|
}
|
|
|
|
/* MIT license */
|
|
|
|
|
|
|
|
var Color = function (obj) {
|
|
if (obj instanceof Color) {
|
|
return obj;
|
|
}
|
|
if (!(this instanceof Color)) {
|
|
return new Color(obj);
|
|
}
|
|
|
|
this.valid = false;
|
|
this.values = {
|
|
rgb: [0, 0, 0],
|
|
hsl: [0, 0, 0],
|
|
hsv: [0, 0, 0],
|
|
hwb: [0, 0, 0],
|
|
cmyk: [0, 0, 0, 0],
|
|
alpha: 1
|
|
};
|
|
|
|
// parse Color() argument
|
|
var vals;
|
|
if (typeof obj === 'string') {
|
|
vals = colorString.getRgba(obj);
|
|
if (vals) {
|
|
this.setValues('rgb', vals);
|
|
} else if (vals = colorString.getHsla(obj)) {
|
|
this.setValues('hsl', vals);
|
|
} else if (vals = colorString.getHwb(obj)) {
|
|
this.setValues('hwb', vals);
|
|
}
|
|
} else if (typeof obj === 'object') {
|
|
vals = obj;
|
|
if (vals.r !== undefined || vals.red !== undefined) {
|
|
this.setValues('rgb', vals);
|
|
} else if (vals.l !== undefined || vals.lightness !== undefined) {
|
|
this.setValues('hsl', vals);
|
|
} else if (vals.v !== undefined || vals.value !== undefined) {
|
|
this.setValues('hsv', vals);
|
|
} else if (vals.w !== undefined || vals.whiteness !== undefined) {
|
|
this.setValues('hwb', vals);
|
|
} else if (vals.c !== undefined || vals.cyan !== undefined) {
|
|
this.setValues('cmyk', vals);
|
|
}
|
|
}
|
|
};
|
|
|
|
Color.prototype = {
|
|
isValid: function () {
|
|
return this.valid;
|
|
},
|
|
rgb: function () {
|
|
return this.setSpace('rgb', arguments);
|
|
},
|
|
hsl: function () {
|
|
return this.setSpace('hsl', arguments);
|
|
},
|
|
hsv: function () {
|
|
return this.setSpace('hsv', arguments);
|
|
},
|
|
hwb: function () {
|
|
return this.setSpace('hwb', arguments);
|
|
},
|
|
cmyk: function () {
|
|
return this.setSpace('cmyk', arguments);
|
|
},
|
|
|
|
rgbArray: function () {
|
|
return this.values.rgb;
|
|
},
|
|
hslArray: function () {
|
|
return this.values.hsl;
|
|
},
|
|
hsvArray: function () {
|
|
return this.values.hsv;
|
|
},
|
|
hwbArray: function () {
|
|
var values = this.values;
|
|
if (values.alpha !== 1) {
|
|
return values.hwb.concat([values.alpha]);
|
|
}
|
|
return values.hwb;
|
|
},
|
|
cmykArray: function () {
|
|
return this.values.cmyk;
|
|
},
|
|
rgbaArray: function () {
|
|
var values = this.values;
|
|
return values.rgb.concat([values.alpha]);
|
|
},
|
|
hslaArray: function () {
|
|
var values = this.values;
|
|
return values.hsl.concat([values.alpha]);
|
|
},
|
|
alpha: function (val) {
|
|
if (val === undefined) {
|
|
return this.values.alpha;
|
|
}
|
|
this.setValues('alpha', val);
|
|
return this;
|
|
},
|
|
|
|
red: function (val) {
|
|
return this.setChannel('rgb', 0, val);
|
|
},
|
|
green: function (val) {
|
|
return this.setChannel('rgb', 1, val);
|
|
},
|
|
blue: function (val) {
|
|
return this.setChannel('rgb', 2, val);
|
|
},
|
|
hue: function (val) {
|
|
if (val) {
|
|
val %= 360;
|
|
val = val < 0 ? 360 + val : val;
|
|
}
|
|
return this.setChannel('hsl', 0, val);
|
|
},
|
|
saturation: function (val) {
|
|
return this.setChannel('hsl', 1, val);
|
|
},
|
|
lightness: function (val) {
|
|
return this.setChannel('hsl', 2, val);
|
|
},
|
|
saturationv: function (val) {
|
|
return this.setChannel('hsv', 1, val);
|
|
},
|
|
whiteness: function (val) {
|
|
return this.setChannel('hwb', 1, val);
|
|
},
|
|
blackness: function (val) {
|
|
return this.setChannel('hwb', 2, val);
|
|
},
|
|
value: function (val) {
|
|
return this.setChannel('hsv', 2, val);
|
|
},
|
|
cyan: function (val) {
|
|
return this.setChannel('cmyk', 0, val);
|
|
},
|
|
magenta: function (val) {
|
|
return this.setChannel('cmyk', 1, val);
|
|
},
|
|
yellow: function (val) {
|
|
return this.setChannel('cmyk', 2, val);
|
|
},
|
|
black: function (val) {
|
|
return this.setChannel('cmyk', 3, val);
|
|
},
|
|
|
|
hexString: function () {
|
|
return colorString.hexString(this.values.rgb);
|
|
},
|
|
rgbString: function () {
|
|
return colorString.rgbString(this.values.rgb, this.values.alpha);
|
|
},
|
|
rgbaString: function () {
|
|
return colorString.rgbaString(this.values.rgb, this.values.alpha);
|
|
},
|
|
percentString: function () {
|
|
return colorString.percentString(this.values.rgb, this.values.alpha);
|
|
},
|
|
hslString: function () {
|
|
return colorString.hslString(this.values.hsl, this.values.alpha);
|
|
},
|
|
hslaString: function () {
|
|
return colorString.hslaString(this.values.hsl, this.values.alpha);
|
|
},
|
|
hwbString: function () {
|
|
return colorString.hwbString(this.values.hwb, this.values.alpha);
|
|
},
|
|
keyword: function () {
|
|
return colorString.keyword(this.values.rgb, this.values.alpha);
|
|
},
|
|
|
|
rgbNumber: function () {
|
|
var rgb = this.values.rgb;
|
|
return (rgb[0] << 16) | (rgb[1] << 8) | rgb[2];
|
|
},
|
|
|
|
luminosity: function () {
|
|
// http://www.w3.org/TR/WCAG20/#relativeluminancedef
|
|
var rgb = this.values.rgb;
|
|
var lum = [];
|
|
for (var i = 0; i < rgb.length; i++) {
|
|
var chan = rgb[i] / 255;
|
|
lum[i] = (chan <= 0.03928) ? chan / 12.92 : Math.pow(((chan + 0.055) / 1.055), 2.4);
|
|
}
|
|
return 0.2126 * lum[0] + 0.7152 * lum[1] + 0.0722 * lum[2];
|
|
},
|
|
|
|
contrast: function (color2) {
|
|
// http://www.w3.org/TR/WCAG20/#contrast-ratiodef
|
|
var lum1 = this.luminosity();
|
|
var lum2 = color2.luminosity();
|
|
if (lum1 > lum2) {
|
|
return (lum1 + 0.05) / (lum2 + 0.05);
|
|
}
|
|
return (lum2 + 0.05) / (lum1 + 0.05);
|
|
},
|
|
|
|
level: function (color2) {
|
|
var contrastRatio = this.contrast(color2);
|
|
if (contrastRatio >= 7.1) {
|
|
return 'AAA';
|
|
}
|
|
|
|
return (contrastRatio >= 4.5) ? 'AA' : '';
|
|
},
|
|
|
|
dark: function () {
|
|
// YIQ equation from http://24ways.org/2010/calculating-color-contrast
|
|
var rgb = this.values.rgb;
|
|
var yiq = (rgb[0] * 299 + rgb[1] * 587 + rgb[2] * 114) / 1000;
|
|
return yiq < 128;
|
|
},
|
|
|
|
light: function () {
|
|
return !this.dark();
|
|
},
|
|
|
|
negate: function () {
|
|
var rgb = [];
|
|
for (var i = 0; i < 3; i++) {
|
|
rgb[i] = 255 - this.values.rgb[i];
|
|
}
|
|
this.setValues('rgb', rgb);
|
|
return this;
|
|
},
|
|
|
|
lighten: function (ratio) {
|
|
var hsl = this.values.hsl;
|
|
hsl[2] += hsl[2] * ratio;
|
|
this.setValues('hsl', hsl);
|
|
return this;
|
|
},
|
|
|
|
darken: function (ratio) {
|
|
var hsl = this.values.hsl;
|
|
hsl[2] -= hsl[2] * ratio;
|
|
this.setValues('hsl', hsl);
|
|
return this;
|
|
},
|
|
|
|
saturate: function (ratio) {
|
|
var hsl = this.values.hsl;
|
|
hsl[1] += hsl[1] * ratio;
|
|
this.setValues('hsl', hsl);
|
|
return this;
|
|
},
|
|
|
|
desaturate: function (ratio) {
|
|
var hsl = this.values.hsl;
|
|
hsl[1] -= hsl[1] * ratio;
|
|
this.setValues('hsl', hsl);
|
|
return this;
|
|
},
|
|
|
|
whiten: function (ratio) {
|
|
var hwb = this.values.hwb;
|
|
hwb[1] += hwb[1] * ratio;
|
|
this.setValues('hwb', hwb);
|
|
return this;
|
|
},
|
|
|
|
blacken: function (ratio) {
|
|
var hwb = this.values.hwb;
|
|
hwb[2] += hwb[2] * ratio;
|
|
this.setValues('hwb', hwb);
|
|
return this;
|
|
},
|
|
|
|
greyscale: function () {
|
|
var rgb = this.values.rgb;
|
|
// http://en.wikipedia.org/wiki/Grayscale#Converting_color_to_grayscale
|
|
var val = rgb[0] * 0.3 + rgb[1] * 0.59 + rgb[2] * 0.11;
|
|
this.setValues('rgb', [val, val, val]);
|
|
return this;
|
|
},
|
|
|
|
clearer: function (ratio) {
|
|
var alpha = this.values.alpha;
|
|
this.setValues('alpha', alpha - (alpha * ratio));
|
|
return this;
|
|
},
|
|
|
|
opaquer: function (ratio) {
|
|
var alpha = this.values.alpha;
|
|
this.setValues('alpha', alpha + (alpha * ratio));
|
|
return this;
|
|
},
|
|
|
|
rotate: function (degrees) {
|
|
var hsl = this.values.hsl;
|
|
var hue = (hsl[0] + degrees) % 360;
|
|
hsl[0] = hue < 0 ? 360 + hue : hue;
|
|
this.setValues('hsl', hsl);
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Ported from sass implementation in C
|
|
* https://github.com/sass/libsass/blob/0e6b4a2850092356aa3ece07c6b249f0221caced/functions.cpp#L209
|
|
*/
|
|
mix: function (mixinColor, weight) {
|
|
var color1 = this;
|
|
var color2 = mixinColor;
|
|
var p = weight === undefined ? 0.5 : weight;
|
|
|
|
var w = 2 * p - 1;
|
|
var a = color1.alpha() - color2.alpha();
|
|
|
|
var w1 = (((w * a === -1) ? w : (w + a) / (1 + w * a)) + 1) / 2.0;
|
|
var w2 = 1 - w1;
|
|
|
|
return this
|
|
.rgb(
|
|
w1 * color1.red() + w2 * color2.red(),
|
|
w1 * color1.green() + w2 * color2.green(),
|
|
w1 * color1.blue() + w2 * color2.blue()
|
|
)
|
|
.alpha(color1.alpha() * p + color2.alpha() * (1 - p));
|
|
},
|
|
|
|
toJSON: function () {
|
|
return this.rgb();
|
|
},
|
|
|
|
clone: function () {
|
|
// NOTE(SB): using node-clone creates a dependency to Buffer when using browserify,
|
|
// making the final build way to big to embed in Chart.js. So let's do it manually,
|
|
// assuming that values to clone are 1 dimension arrays containing only numbers,
|
|
// except 'alpha' which is a number.
|
|
var result = new Color();
|
|
var source = this.values;
|
|
var target = result.values;
|
|
var value, type;
|
|
|
|
for (var prop in source) {
|
|
if (source.hasOwnProperty(prop)) {
|
|
value = source[prop];
|
|
type = ({}).toString.call(value);
|
|
if (type === '[object Array]') {
|
|
target[prop] = value.slice(0);
|
|
} else if (type === '[object Number]') {
|
|
target[prop] = value;
|
|
} else {
|
|
console.error('unexpected color value:', value);
|
|
}
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
};
|
|
|
|
Color.prototype.spaces = {
|
|
rgb: ['red', 'green', 'blue'],
|
|
hsl: ['hue', 'saturation', 'lightness'],
|
|
hsv: ['hue', 'saturation', 'value'],
|
|
hwb: ['hue', 'whiteness', 'blackness'],
|
|
cmyk: ['cyan', 'magenta', 'yellow', 'black']
|
|
};
|
|
|
|
Color.prototype.maxes = {
|
|
rgb: [255, 255, 255],
|
|
hsl: [360, 100, 100],
|
|
hsv: [360, 100, 100],
|
|
hwb: [360, 100, 100],
|
|
cmyk: [100, 100, 100, 100]
|
|
};
|
|
|
|
Color.prototype.getValues = function (space) {
|
|
var values = this.values;
|
|
var vals = {};
|
|
|
|
for (var i = 0; i < space.length; i++) {
|
|
vals[space.charAt(i)] = values[space][i];
|
|
}
|
|
|
|
if (values.alpha !== 1) {
|
|
vals.a = values.alpha;
|
|
}
|
|
|
|
// {r: 255, g: 255, b: 255, a: 0.4}
|
|
return vals;
|
|
};
|
|
|
|
Color.prototype.setValues = function (space, vals) {
|
|
var values = this.values;
|
|
var spaces = this.spaces;
|
|
var maxes = this.maxes;
|
|
var alpha = 1;
|
|
var i;
|
|
|
|
this.valid = true;
|
|
|
|
if (space === 'alpha') {
|
|
alpha = vals;
|
|
} else if (vals.length) {
|
|
// [10, 10, 10]
|
|
values[space] = vals.slice(0, space.length);
|
|
alpha = vals[space.length];
|
|
} else if (vals[space.charAt(0)] !== undefined) {
|
|
// {r: 10, g: 10, b: 10}
|
|
for (i = 0; i < space.length; i++) {
|
|
values[space][i] = vals[space.charAt(i)];
|
|
}
|
|
|
|
alpha = vals.a;
|
|
} else if (vals[spaces[space][0]] !== undefined) {
|
|
// {red: 10, green: 10, blue: 10}
|
|
var chans = spaces[space];
|
|
|
|
for (i = 0; i < space.length; i++) {
|
|
values[space][i] = vals[chans[i]];
|
|
}
|
|
|
|
alpha = vals.alpha;
|
|
}
|
|
|
|
values.alpha = Math.max(0, Math.min(1, (alpha === undefined ? values.alpha : alpha)));
|
|
|
|
if (space === 'alpha') {
|
|
return false;
|
|
}
|
|
|
|
var capped;
|
|
|
|
// cap values of the space prior converting all values
|
|
for (i = 0; i < space.length; i++) {
|
|
capped = Math.max(0, Math.min(maxes[space][i], values[space][i]));
|
|
values[space][i] = Math.round(capped);
|
|
}
|
|
|
|
// convert to all the other color spaces
|
|
for (var sname in spaces) {
|
|
if (sname !== space) {
|
|
values[sname] = colorConvert[space][sname](values[space]);
|
|
}
|
|
}
|
|
|
|
return true;
|
|
};
|
|
|
|
Color.prototype.setSpace = function (space, args) {
|
|
var vals = args[0];
|
|
|
|
if (vals === undefined) {
|
|
// color.rgb()
|
|
return this.getValues(space);
|
|
}
|
|
|
|
// color.rgb(10, 10, 10)
|
|
if (typeof vals === 'number') {
|
|
vals = Array.prototype.slice.call(args);
|
|
}
|
|
|
|
this.setValues(space, vals);
|
|
return this;
|
|
};
|
|
|
|
Color.prototype.setChannel = function (space, index, val) {
|
|
var svalues = this.values[space];
|
|
if (val === undefined) {
|
|
// color.red()
|
|
return svalues[index];
|
|
} else if (val === svalues[index]) {
|
|
// color.red(color.red())
|
|
return this;
|
|
}
|
|
|
|
// color.red(100)
|
|
svalues[index] = val;
|
|
this.setValues(space, svalues);
|
|
|
|
return this;
|
|
};
|
|
|
|
if (typeof window !== 'undefined') {
|
|
window.Color = Color;
|
|
}
|
|
|
|
var chartjsColor = Color;
|
|
|
|
/**
|
|
* @namespace Chart.helpers
|
|
*/
|
|
var helpers = {
|
|
/**
|
|
* An empty function that can be used, for example, for optional callback.
|
|
*/
|
|
noop: function() {},
|
|
|
|
/**
|
|
* Returns a unique id, sequentially generated from a global variable.
|
|
* @returns {number}
|
|
* @function
|
|
*/
|
|
uid: (function() {
|
|
var id = 0;
|
|
return function() {
|
|
return id++;
|
|
};
|
|
}()),
|
|
|
|
/**
|
|
* Returns true if `value` is neither null nor undefined, else returns false.
|
|
* @param {*} value - The value to test.
|
|
* @returns {boolean}
|
|
* @since 2.7.0
|
|
*/
|
|
isNullOrUndef: function(value) {
|
|
return value === null || typeof value === 'undefined';
|
|
},
|
|
|
|
/**
|
|
* Returns true if `value` is an array (including typed arrays), else returns false.
|
|
* @param {*} value - The value to test.
|
|
* @returns {boolean}
|
|
* @function
|
|
*/
|
|
isArray: function(value) {
|
|
if (Array.isArray && Array.isArray(value)) {
|
|
return true;
|
|
}
|
|
var type = Object.prototype.toString.call(value);
|
|
if (type.substr(0, 7) === '[object' && type.substr(-6) === 'Array]') {
|
|
return true;
|
|
}
|
|
return false;
|
|
},
|
|
|
|
/**
|
|
* Returns true if `value` is an object (excluding null), else returns false.
|
|
* @param {*} value - The value to test.
|
|
* @returns {boolean}
|
|
* @since 2.7.0
|
|
*/
|
|
isObject: function(value) {
|
|
return value !== null && Object.prototype.toString.call(value) === '[object Object]';
|
|
},
|
|
|
|
/**
|
|
* Returns true if `value` is a finite number, else returns false
|
|
* @param {*} value - The value to test.
|
|
* @returns {boolean}
|
|
*/
|
|
isFinite: function(value) {
|
|
return (typeof value === 'number' || value instanceof Number) && isFinite(value);
|
|
},
|
|
|
|
/**
|
|
* Returns `value` if defined, else returns `defaultValue`.
|
|
* @param {*} value - The value to return if defined.
|
|
* @param {*} defaultValue - The value to return if `value` is undefined.
|
|
* @returns {*}
|
|
*/
|
|
valueOrDefault: function(value, defaultValue) {
|
|
return typeof value === 'undefined' ? defaultValue : value;
|
|
},
|
|
|
|
/**
|
|
* Returns value at the given `index` in array if defined, else returns `defaultValue`.
|
|
* @param {Array} value - The array to lookup for value at `index`.
|
|
* @param {number} index - The index in `value` to lookup for value.
|
|
* @param {*} defaultValue - The value to return if `value[index]` is undefined.
|
|
* @returns {*}
|
|
*/
|
|
valueAtIndexOrDefault: function(value, index, defaultValue) {
|
|
return helpers.valueOrDefault(helpers.isArray(value) ? value[index] : value, defaultValue);
|
|
},
|
|
|
|
/**
|
|
* Calls `fn` with the given `args` in the scope defined by `thisArg` and returns the
|
|
* value returned by `fn`. If `fn` is not a function, this method returns undefined.
|
|
* @param {function} fn - The function to call.
|
|
* @param {Array|undefined|null} args - The arguments with which `fn` should be called.
|
|
* @param {object} [thisArg] - The value of `this` provided for the call to `fn`.
|
|
* @returns {*}
|
|
*/
|
|
callback: function(fn, args, thisArg) {
|
|
if (fn && typeof fn.call === 'function') {
|
|
return fn.apply(thisArg, args);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Note(SB) for performance sake, this method should only be used when loopable type
|
|
* is unknown or in none intensive code (not called often and small loopable). Else
|
|
* it's preferable to use a regular for() loop and save extra function calls.
|
|
* @param {object|Array} loopable - The object or array to be iterated.
|
|
* @param {function} fn - The function to call for each item.
|
|
* @param {object} [thisArg] - The value of `this` provided for the call to `fn`.
|
|
* @param {boolean} [reverse] - If true, iterates backward on the loopable.
|
|
*/
|
|
each: function(loopable, fn, thisArg, reverse) {
|
|
var i, len, keys;
|
|
if (helpers.isArray(loopable)) {
|
|
len = loopable.length;
|
|
if (reverse) {
|
|
for (i = len - 1; i >= 0; i--) {
|
|
fn.call(thisArg, loopable[i], i);
|
|
}
|
|
} else {
|
|
for (i = 0; i < len; i++) {
|
|
fn.call(thisArg, loopable[i], i);
|
|
}
|
|
}
|
|
} else if (helpers.isObject(loopable)) {
|
|
keys = Object.keys(loopable);
|
|
len = keys.length;
|
|
for (i = 0; i < len; i++) {
|
|
fn.call(thisArg, loopable[keys[i]], keys[i]);
|
|
}
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Returns true if the `a0` and `a1` arrays have the same content, else returns false.
|
|
* @see https://stackoverflow.com/a/14853974
|
|
* @param {Array} a0 - The array to compare
|
|
* @param {Array} a1 - The array to compare
|
|
* @returns {boolean}
|
|
*/
|
|
arrayEquals: function(a0, a1) {
|
|
var i, ilen, v0, v1;
|
|
|
|
if (!a0 || !a1 || a0.length !== a1.length) {
|
|
return false;
|
|
}
|
|
|
|
for (i = 0, ilen = a0.length; i < ilen; ++i) {
|
|
v0 = a0[i];
|
|
v1 = a1[i];
|
|
|
|
if (v0 instanceof Array && v1 instanceof Array) {
|
|
if (!helpers.arrayEquals(v0, v1)) {
|
|
return false;
|
|
}
|
|
} else if (v0 !== v1) {
|
|
// NOTE: two different object instances will never be equal: {x:20} != {x:20}
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
},
|
|
|
|
/**
|
|
* Returns a deep copy of `source` without keeping references on objects and arrays.
|
|
* @param {*} source - The value to clone.
|
|
* @returns {*}
|
|
*/
|
|
clone: function(source) {
|
|
if (helpers.isArray(source)) {
|
|
return source.map(helpers.clone);
|
|
}
|
|
|
|
if (helpers.isObject(source)) {
|
|
var target = {};
|
|
var keys = Object.keys(source);
|
|
var klen = keys.length;
|
|
var k = 0;
|
|
|
|
for (; k < klen; ++k) {
|
|
target[keys[k]] = helpers.clone(source[keys[k]]);
|
|
}
|
|
|
|
return target;
|
|
}
|
|
|
|
return source;
|
|
},
|
|
|
|
/**
|
|
* The default merger when Chart.helpers.merge is called without merger option.
|
|
* Note(SB): also used by mergeConfig and mergeScaleConfig as fallback.
|
|
* @private
|
|
*/
|
|
_merger: function(key, target, source, options) {
|
|
var tval = target[key];
|
|
var sval = source[key];
|
|
|
|
if (helpers.isObject(tval) && helpers.isObject(sval)) {
|
|
helpers.merge(tval, sval, options);
|
|
} else {
|
|
target[key] = helpers.clone(sval);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Merges source[key] in target[key] only if target[key] is undefined.
|
|
* @private
|
|
*/
|
|
_mergerIf: function(key, target, source) {
|
|
var tval = target[key];
|
|
var sval = source[key];
|
|
|
|
if (helpers.isObject(tval) && helpers.isObject(sval)) {
|
|
helpers.mergeIf(tval, sval);
|
|
} else if (!target.hasOwnProperty(key)) {
|
|
target[key] = helpers.clone(sval);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Recursively deep copies `source` properties into `target` with the given `options`.
|
|
* IMPORTANT: `target` is not cloned and will be updated with `source` properties.
|
|
* @param {object} target - The target object in which all sources are merged into.
|
|
* @param {object|object[]} source - Object(s) to merge into `target`.
|
|
* @param {object} [options] - Merging options:
|
|
* @param {function} [options.merger] - The merge method (key, target, source, options)
|
|
* @returns {object} The `target` object.
|
|
*/
|
|
merge: function(target, source, options) {
|
|
var sources = helpers.isArray(source) ? source : [source];
|
|
var ilen = sources.length;
|
|
var merge, i, keys, klen, k;
|
|
|
|
if (!helpers.isObject(target)) {
|
|
return target;
|
|
}
|
|
|
|
options = options || {};
|
|
merge = options.merger || helpers._merger;
|
|
|
|
for (i = 0; i < ilen; ++i) {
|
|
source = sources[i];
|
|
if (!helpers.isObject(source)) {
|
|
continue;
|
|
}
|
|
|
|
keys = Object.keys(source);
|
|
for (k = 0, klen = keys.length; k < klen; ++k) {
|
|
merge(keys[k], target, source, options);
|
|
}
|
|
}
|
|
|
|
return target;
|
|
},
|
|
|
|
/**
|
|
* Recursively deep copies `source` properties into `target` *only* if not defined in target.
|
|
* IMPORTANT: `target` is not cloned and will be updated with `source` properties.
|
|
* @param {object} target - The target object in which all sources are merged into.
|
|
* @param {object|object[]} source - Object(s) to merge into `target`.
|
|
* @returns {object} The `target` object.
|
|
*/
|
|
mergeIf: function(target, source) {
|
|
return helpers.merge(target, source, {merger: helpers._mergerIf});
|
|
},
|
|
|
|
/**
|
|
* Applies the contents of two or more objects together into the first object.
|
|
* @param {object} target - The target object in which all objects are merged into.
|
|
* @param {object} arg1 - Object containing additional properties to merge in target.
|
|
* @param {object} argN - Additional objects containing properties to merge in target.
|
|
* @returns {object} The `target` object.
|
|
*/
|
|
extend: function(target) {
|
|
var setFn = function(value, key) {
|
|
target[key] = value;
|
|
};
|
|
for (var i = 1, ilen = arguments.length; i < ilen; ++i) {
|
|
helpers.each(arguments[i], setFn);
|
|
}
|
|
return target;
|
|
},
|
|
|
|
/**
|
|
* Basic javascript inheritance based on the model created in Backbone.js
|
|
*/
|
|
inherits: function(extensions) {
|
|
var me = this;
|
|
var ChartElement = (extensions && extensions.hasOwnProperty('constructor')) ? extensions.constructor : function() {
|
|
return me.apply(this, arguments);
|
|
};
|
|
|
|
var Surrogate = function() {
|
|
this.constructor = ChartElement;
|
|
};
|
|
|
|
Surrogate.prototype = me.prototype;
|
|
ChartElement.prototype = new Surrogate();
|
|
ChartElement.extend = helpers.inherits;
|
|
|
|
if (extensions) {
|
|
helpers.extend(ChartElement.prototype, extensions);
|
|
}
|
|
|
|
ChartElement.__super__ = me.prototype;
|
|
return ChartElement;
|
|
}
|
|
};
|
|
|
|
var helpers_core = helpers;
|
|
|
|
// DEPRECATIONS
|
|
|
|
/**
|
|
* Provided for backward compatibility, use Chart.helpers.callback instead.
|
|
* @function Chart.helpers.callCallback
|
|
* @deprecated since version 2.6.0
|
|
* @todo remove at version 3
|
|
* @private
|
|
*/
|
|
helpers.callCallback = helpers.callback;
|
|
|
|
/**
|
|
* Provided for backward compatibility, use Array.prototype.indexOf instead.
|
|
* Array.prototype.indexOf compatibility: Chrome, Opera, Safari, FF1.5+, IE9+
|
|
* @function Chart.helpers.indexOf
|
|
* @deprecated since version 2.7.0
|
|
* @todo remove at version 3
|
|
* @private
|
|
*/
|
|
helpers.indexOf = function(array, item, fromIndex) {
|
|
return Array.prototype.indexOf.call(array, item, fromIndex);
|
|
};
|
|
|
|
/**
|
|
* Provided for backward compatibility, use Chart.helpers.valueOrDefault instead.
|
|
* @function Chart.helpers.getValueOrDefault
|
|
* @deprecated since version 2.7.0
|
|
* @todo remove at version 3
|
|
* @private
|
|
*/
|
|
helpers.getValueOrDefault = helpers.valueOrDefault;
|
|
|
|
/**
|
|
* Provided for backward compatibility, use Chart.helpers.valueAtIndexOrDefault instead.
|
|
* @function Chart.helpers.getValueAtIndexOrDefault
|
|
* @deprecated since version 2.7.0
|
|
* @todo remove at version 3
|
|
* @private
|
|
*/
|
|
helpers.getValueAtIndexOrDefault = helpers.valueAtIndexOrDefault;
|
|
|
|
/**
|
|
* Easing functions adapted from Robert Penner's easing equations.
|
|
* @namespace Chart.helpers.easingEffects
|
|
* @see http://www.robertpenner.com/easing/
|
|
*/
|
|
var effects = {
|
|
linear: function(t) {
|
|
return t;
|
|
},
|
|
|
|
easeInQuad: function(t) {
|
|
return t * t;
|
|
},
|
|
|
|
easeOutQuad: function(t) {
|
|
return -t * (t - 2);
|
|
},
|
|
|
|
easeInOutQuad: function(t) {
|
|
if ((t /= 0.5) < 1) {
|
|
return 0.5 * t * t;
|
|
}
|
|
return -0.5 * ((--t) * (t - 2) - 1);
|
|
},
|
|
|
|
easeInCubic: function(t) {
|
|
return t * t * t;
|
|
},
|
|
|
|
easeOutCubic: function(t) {
|
|
return (t = t - 1) * t * t + 1;
|
|
},
|
|
|
|
easeInOutCubic: function(t) {
|
|
if ((t /= 0.5) < 1) {
|
|
return 0.5 * t * t * t;
|
|
}
|
|
return 0.5 * ((t -= 2) * t * t + 2);
|
|
},
|
|
|
|
easeInQuart: function(t) {
|
|
return t * t * t * t;
|
|
},
|
|
|
|
easeOutQuart: function(t) {
|
|
return -((t = t - 1) * t * t * t - 1);
|
|
},
|
|
|
|
easeInOutQuart: function(t) {
|
|
if ((t /= 0.5) < 1) {
|
|
return 0.5 * t * t * t * t;
|
|
}
|
|
return -0.5 * ((t -= 2) * t * t * t - 2);
|
|
},
|
|
|
|
easeInQuint: function(t) {
|
|
return t * t * t * t * t;
|
|
},
|
|
|
|
easeOutQuint: function(t) {
|
|
return (t = t - 1) * t * t * t * t + 1;
|
|
},
|
|
|
|
easeInOutQuint: function(t) {
|
|
if ((t /= 0.5) < 1) {
|
|
return 0.5 * t * t * t * t * t;
|
|
}
|
|
return 0.5 * ((t -= 2) * t * t * t * t + 2);
|
|
},
|
|
|
|
easeInSine: function(t) {
|
|
return -Math.cos(t * (Math.PI / 2)) + 1;
|
|
},
|
|
|
|
easeOutSine: function(t) {
|
|
return Math.sin(t * (Math.PI / 2));
|
|
},
|
|
|
|
easeInOutSine: function(t) {
|
|
return -0.5 * (Math.cos(Math.PI * t) - 1);
|
|
},
|
|
|
|
easeInExpo: function(t) {
|
|
return (t === 0) ? 0 : Math.pow(2, 10 * (t - 1));
|
|
},
|
|
|
|
easeOutExpo: function(t) {
|
|
return (t === 1) ? 1 : -Math.pow(2, -10 * t) + 1;
|
|
},
|
|
|
|
easeInOutExpo: function(t) {
|
|
if (t === 0) {
|
|
return 0;
|
|
}
|
|
if (t === 1) {
|
|
return 1;
|
|
}
|
|
if ((t /= 0.5) < 1) {
|
|
return 0.5 * Math.pow(2, 10 * (t - 1));
|
|
}
|
|
return 0.5 * (-Math.pow(2, -10 * --t) + 2);
|
|
},
|
|
|
|
easeInCirc: function(t) {
|
|
if (t >= 1) {
|
|
return t;
|
|
}
|
|
return -(Math.sqrt(1 - t * t) - 1);
|
|
},
|
|
|
|
easeOutCirc: function(t) {
|
|
return Math.sqrt(1 - (t = t - 1) * t);
|
|
},
|
|
|
|
easeInOutCirc: function(t) {
|
|
if ((t /= 0.5) < 1) {
|
|
return -0.5 * (Math.sqrt(1 - t * t) - 1);
|
|
}
|
|
return 0.5 * (Math.sqrt(1 - (t -= 2) * t) + 1);
|
|
},
|
|
|
|
easeInElastic: function(t) {
|
|
var s = 1.70158;
|
|
var p = 0;
|
|
var a = 1;
|
|
if (t === 0) {
|
|
return 0;
|
|
}
|
|
if (t === 1) {
|
|
return 1;
|
|
}
|
|
if (!p) {
|
|
p = 0.3;
|
|
}
|
|
if (a < 1) {
|
|
a = 1;
|
|
s = p / 4;
|
|
} else {
|
|
s = p / (2 * Math.PI) * Math.asin(1 / a);
|
|
}
|
|
return -(a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t - s) * (2 * Math.PI) / p));
|
|
},
|
|
|
|
easeOutElastic: function(t) {
|
|
var s = 1.70158;
|
|
var p = 0;
|
|
var a = 1;
|
|
if (t === 0) {
|
|
return 0;
|
|
}
|
|
if (t === 1) {
|
|
return 1;
|
|
}
|
|
if (!p) {
|
|
p = 0.3;
|
|
}
|
|
if (a < 1) {
|
|
a = 1;
|
|
s = p / 4;
|
|
} else {
|
|
s = p / (2 * Math.PI) * Math.asin(1 / a);
|
|
}
|
|
return a * Math.pow(2, -10 * t) * Math.sin((t - s) * (2 * Math.PI) / p) + 1;
|
|
},
|
|
|
|
easeInOutElastic: function(t) {
|
|
var s = 1.70158;
|
|
var p = 0;
|
|
var a = 1;
|
|
if (t === 0) {
|
|
return 0;
|
|
}
|
|
if ((t /= 0.5) === 2) {
|
|
return 1;
|
|
}
|
|
if (!p) {
|
|
p = 0.45;
|
|
}
|
|
if (a < 1) {
|
|
a = 1;
|
|
s = p / 4;
|
|
} else {
|
|
s = p / (2 * Math.PI) * Math.asin(1 / a);
|
|
}
|
|
if (t < 1) {
|
|
return -0.5 * (a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t - s) * (2 * Math.PI) / p));
|
|
}
|
|
return a * Math.pow(2, -10 * (t -= 1)) * Math.sin((t - s) * (2 * Math.PI) / p) * 0.5 + 1;
|
|
},
|
|
easeInBack: function(t) {
|
|
var s = 1.70158;
|
|
return t * t * ((s + 1) * t - s);
|
|
},
|
|
|
|
easeOutBack: function(t) {
|
|
var s = 1.70158;
|
|
return (t = t - 1) * t * ((s + 1) * t + s) + 1;
|
|
},
|
|
|
|
easeInOutBack: function(t) {
|
|
var s = 1.70158;
|
|
if ((t /= 0.5) < 1) {
|
|
return 0.5 * (t * t * (((s *= (1.525)) + 1) * t - s));
|
|
}
|
|
return 0.5 * ((t -= 2) * t * (((s *= (1.525)) + 1) * t + s) + 2);
|
|
},
|
|
|
|
easeInBounce: function(t) {
|
|
return 1 - effects.easeOutBounce(1 - t);
|
|
},
|
|
|
|
easeOutBounce: function(t) {
|
|
if (t < (1 / 2.75)) {
|
|
return 7.5625 * t * t;
|
|
}
|
|
if (t < (2 / 2.75)) {
|
|
return 7.5625 * (t -= (1.5 / 2.75)) * t + 0.75;
|
|
}
|
|
if (t < (2.5 / 2.75)) {
|
|
return 7.5625 * (t -= (2.25 / 2.75)) * t + 0.9375;
|
|
}
|
|
return 7.5625 * (t -= (2.625 / 2.75)) * t + 0.984375;
|
|
},
|
|
|
|
easeInOutBounce: function(t) {
|
|
if (t < 0.5) {
|
|
return effects.easeInBounce(t * 2) * 0.5;
|
|
}
|
|
return effects.easeOutBounce(t * 2 - 1) * 0.5 + 0.5;
|
|
}
|
|
};
|
|
|
|
var helpers_easing = {
|
|
effects: effects
|
|
};
|
|
|
|
// DEPRECATIONS
|
|
|
|
/**
|
|
* Provided for backward compatibility, use Chart.helpers.easing.effects instead.
|
|
* @function Chart.helpers.easingEffects
|
|
* @deprecated since version 2.7.0
|
|
* @todo remove at version 3
|
|
* @private
|
|
*/
|
|
helpers_core.easingEffects = effects;
|
|
|
|
var PI = Math.PI;
|
|
var RAD_PER_DEG = PI / 180;
|
|
var DOUBLE_PI = PI * 2;
|
|
var HALF_PI = PI / 2;
|
|
var QUARTER_PI = PI / 4;
|
|
var TWO_THIRDS_PI = PI * 2 / 3;
|
|
|
|
/**
|
|
* @namespace Chart.helpers.canvas
|
|
*/
|
|
var exports$1 = {
|
|
/**
|
|
* Clears the entire canvas associated to the given `chart`.
|
|
* @param {Chart} chart - The chart for which to clear the canvas.
|
|
*/
|
|
clear: function(chart) {
|
|
chart.ctx.clearRect(0, 0, chart.width, chart.height);
|
|
},
|
|
|
|
/**
|
|
* Creates a "path" for a rectangle with rounded corners at position (x, y) with a
|
|
* given size (width, height) and the same `radius` for all corners.
|
|
* @param {CanvasRenderingContext2D} ctx - The canvas 2D Context.
|
|
* @param {number} x - The x axis of the coordinate for the rectangle starting point.
|
|
* @param {number} y - The y axis of the coordinate for the rectangle starting point.
|
|
* @param {number} width - The rectangle's width.
|
|
* @param {number} height - The rectangle's height.
|
|
* @param {number} radius - The rounded amount (in pixels) for the four corners.
|
|
* @todo handle `radius` as top-left, top-right, bottom-right, bottom-left array/object?
|
|
*/
|
|
roundedRect: function(ctx, x, y, width, height, radius) {
|
|
if (radius) {
|
|
var r = Math.min(radius, height / 2, width / 2);
|
|
var left = x + r;
|
|
var top = y + r;
|
|
var right = x + width - r;
|
|
var bottom = y + height - r;
|
|
|
|
ctx.moveTo(x, top);
|
|
if (left < right && top < bottom) {
|
|
ctx.arc(left, top, r, -PI, -HALF_PI);
|
|
ctx.arc(right, top, r, -HALF_PI, 0);
|
|
ctx.arc(right, bottom, r, 0, HALF_PI);
|
|
ctx.arc(left, bottom, r, HALF_PI, PI);
|
|
} else if (left < right) {
|
|
ctx.moveTo(left, y);
|
|
ctx.arc(right, top, r, -HALF_PI, HALF_PI);
|
|
ctx.arc(left, top, r, HALF_PI, PI + HALF_PI);
|
|
} else if (top < bottom) {
|
|
ctx.arc(left, top, r, -PI, 0);
|
|
ctx.arc(left, bottom, r, 0, PI);
|
|
} else {
|
|
ctx.arc(left, top, r, -PI, PI);
|
|
}
|
|
ctx.closePath();
|
|
ctx.moveTo(x, y);
|
|
} else {
|
|
ctx.rect(x, y, width, height);
|
|
}
|
|
},
|
|
|
|
drawPoint: function(ctx, style, radius, x, y, rotation) {
|
|
var type, xOffset, yOffset, size, cornerRadius;
|
|
var rad = (rotation || 0) * RAD_PER_DEG;
|
|
|
|
if (style && typeof style === 'object') {
|
|
type = style.toString();
|
|
if (type === '[object HTMLImageElement]' || type === '[object HTMLCanvasElement]') {
|
|
ctx.drawImage(style, x - style.width / 2, y - style.height / 2, style.width, style.height);
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (isNaN(radius) || radius <= 0) {
|
|
return;
|
|
}
|
|
|
|
ctx.beginPath();
|
|
|
|
switch (style) {
|
|
// Default includes circle
|
|
default:
|
|
ctx.arc(x, y, radius, 0, DOUBLE_PI);
|
|
ctx.closePath();
|
|
break;
|
|
case 'triangle':
|
|
ctx.moveTo(x + Math.sin(rad) * radius, y - Math.cos(rad) * radius);
|
|
rad += TWO_THIRDS_PI;
|
|
ctx.lineTo(x + Math.sin(rad) * radius, y - Math.cos(rad) * radius);
|
|
rad += TWO_THIRDS_PI;
|
|
ctx.lineTo(x + Math.sin(rad) * radius, y - Math.cos(rad) * radius);
|
|
ctx.closePath();
|
|
break;
|
|
case 'rectRounded':
|
|
// NOTE: the rounded rect implementation changed to use `arc` instead of
|
|
// `quadraticCurveTo` since it generates better results when rect is
|
|
// almost a circle. 0.516 (instead of 0.5) produces results with visually
|
|
// closer proportion to the previous impl and it is inscribed in the
|
|
// circle with `radius`. For more details, see the following PRs:
|
|
// https://github.com/chartjs/Chart.js/issues/5597
|
|
// https://github.com/chartjs/Chart.js/issues/5858
|
|
cornerRadius = radius * 0.516;
|
|
size = radius - cornerRadius;
|
|
xOffset = Math.cos(rad + QUARTER_PI) * size;
|
|
yOffset = Math.sin(rad + QUARTER_PI) * size;
|
|
ctx.arc(x - xOffset, y - yOffset, cornerRadius, rad - PI, rad - HALF_PI);
|
|
ctx.arc(x + yOffset, y - xOffset, cornerRadius, rad - HALF_PI, rad);
|
|
ctx.arc(x + xOffset, y + yOffset, cornerRadius, rad, rad + HALF_PI);
|
|
ctx.arc(x - yOffset, y + xOffset, cornerRadius, rad + HALF_PI, rad + PI);
|
|
ctx.closePath();
|
|
break;
|
|
case 'rect':
|
|
if (!rotation) {
|
|
size = Math.SQRT1_2 * radius;
|
|
ctx.rect(x - size, y - size, 2 * size, 2 * size);
|
|
break;
|
|
}
|
|
rad += QUARTER_PI;
|
|
/* falls through */
|
|
case 'rectRot':
|
|
xOffset = Math.cos(rad) * radius;
|
|
yOffset = Math.sin(rad) * radius;
|
|
ctx.moveTo(x - xOffset, y - yOffset);
|
|
ctx.lineTo(x + yOffset, y - xOffset);
|
|
ctx.lineTo(x + xOffset, y + yOffset);
|
|
ctx.lineTo(x - yOffset, y + xOffset);
|
|
ctx.closePath();
|
|
break;
|
|
case 'crossRot':
|
|
rad += QUARTER_PI;
|
|
/* falls through */
|
|
case 'cross':
|
|
xOffset = Math.cos(rad) * radius;
|
|
yOffset = Math.sin(rad) * radius;
|
|
ctx.moveTo(x - xOffset, y - yOffset);
|
|
ctx.lineTo(x + xOffset, y + yOffset);
|
|
ctx.moveTo(x + yOffset, y - xOffset);
|
|
ctx.lineTo(x - yOffset, y + xOffset);
|
|
break;
|
|
case 'star':
|
|
xOffset = Math.cos(rad) * radius;
|
|
yOffset = Math.sin(rad) * radius;
|
|
ctx.moveTo(x - xOffset, y - yOffset);
|
|
ctx.lineTo(x + xOffset, y + yOffset);
|
|
ctx.moveTo(x + yOffset, y - xOffset);
|
|
ctx.lineTo(x - yOffset, y + xOffset);
|
|
rad += QUARTER_PI;
|
|
xOffset = Math.cos(rad) * radius;
|
|
yOffset = Math.sin(rad) * radius;
|
|
ctx.moveTo(x - xOffset, y - yOffset);
|
|
ctx.lineTo(x + xOffset, y + yOffset);
|
|
ctx.moveTo(x + yOffset, y - xOffset);
|
|
ctx.lineTo(x - yOffset, y + xOffset);
|
|
break;
|
|
case 'line':
|
|
xOffset = Math.cos(rad) * radius;
|
|
yOffset = Math.sin(rad) * radius;
|
|
ctx.moveTo(x - xOffset, y - yOffset);
|
|
ctx.lineTo(x + xOffset, y + yOffset);
|
|
break;
|
|
case 'dash':
|
|
ctx.moveTo(x, y);
|
|
ctx.lineTo(x + Math.cos(rad) * radius, y + Math.sin(rad) * radius);
|
|
break;
|
|
}
|
|
|
|
ctx.fill();
|
|
ctx.stroke();
|
|
},
|
|
|
|
/**
|
|
* Returns true if the point is inside the rectangle
|
|
* @param {object} point - The point to test
|
|
* @param {object} area - The rectangle
|
|
* @returns {boolean}
|
|
* @private
|
|
*/
|
|
_isPointInArea: function(point, area) {
|
|
var epsilon = 1e-6; // 1e-6 is margin in pixels for accumulated error.
|
|
|
|
return point.x > area.left - epsilon && point.x < area.right + epsilon &&
|
|
point.y > area.top - epsilon && point.y < area.bottom + epsilon;
|
|
},
|
|
|
|
clipArea: function(ctx, area) {
|
|
ctx.save();
|
|
ctx.beginPath();
|
|
ctx.rect(area.left, area.top, area.right - area.left, area.bottom - area.top);
|
|
ctx.clip();
|
|
},
|
|
|
|
unclipArea: function(ctx) {
|
|
ctx.restore();
|
|
},
|
|
|
|
lineTo: function(ctx, previous, target, flip) {
|
|
var stepped = target.steppedLine;
|
|
if (stepped) {
|
|
if (stepped === 'middle') {
|
|
var midpoint = (previous.x + target.x) / 2.0;
|
|
ctx.lineTo(midpoint, flip ? target.y : previous.y);
|
|
ctx.lineTo(midpoint, flip ? previous.y : target.y);
|
|
} else if ((stepped === 'after' && !flip) || (stepped !== 'after' && flip)) {
|
|
ctx.lineTo(previous.x, target.y);
|
|
} else {
|
|
ctx.lineTo(target.x, previous.y);
|
|
}
|
|
ctx.lineTo(target.x, target.y);
|
|
return;
|
|
}
|
|
|
|
if (!target.tension) {
|
|
ctx.lineTo(target.x, target.y);
|
|
return;
|
|
}
|
|
|
|
ctx.bezierCurveTo(
|
|
flip ? previous.controlPointPreviousX : previous.controlPointNextX,
|
|
flip ? previous.controlPointPreviousY : previous.controlPointNextY,
|
|
flip ? target.controlPointNextX : target.controlPointPreviousX,
|
|
flip ? target.controlPointNextY : target.controlPointPreviousY,
|
|
target.x,
|
|
target.y);
|
|
}
|
|
};
|
|
|
|
var helpers_canvas = exports$1;
|
|
|
|
// DEPRECATIONS
|
|
|
|
/**
|
|
* Provided for backward compatibility, use Chart.helpers.canvas.clear instead.
|
|
* @namespace Chart.helpers.clear
|
|
* @deprecated since version 2.7.0
|
|
* @todo remove at version 3
|
|
* @private
|
|
*/
|
|
helpers_core.clear = exports$1.clear;
|
|
|
|
/**
|
|
* Provided for backward compatibility, use Chart.helpers.canvas.roundedRect instead.
|
|
* @namespace Chart.helpers.drawRoundedRectangle
|
|
* @deprecated since version 2.7.0
|
|
* @todo remove at version 3
|
|
* @private
|
|
*/
|
|
helpers_core.drawRoundedRectangle = function(ctx) {
|
|
ctx.beginPath();
|
|
exports$1.roundedRect.apply(exports$1, arguments);
|
|
};
|
|
|
|
var defaults = {
|
|
/**
|
|
* @private
|
|
*/
|
|
_set: function(scope, values) {
|
|
return helpers_core.merge(this[scope] || (this[scope] = {}), values);
|
|
}
|
|
};
|
|
|
|
defaults._set('global', {
|
|
defaultColor: 'rgba(0,0,0,0.1)',
|
|
defaultFontColor: '#666',
|
|
defaultFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",
|
|
defaultFontSize: 12,
|
|
defaultFontStyle: 'normal',
|
|
defaultLineHeight: 1.2,
|
|
showLines: true
|
|
});
|
|
|
|
var core_defaults = defaults;
|
|
|
|
var valueOrDefault = helpers_core.valueOrDefault;
|
|
|
|
/**
|
|
* Converts the given font object into a CSS font string.
|
|
* @param {object} font - A font object.
|
|
* @return {string} The CSS font string. See https://developer.mozilla.org/en-US/docs/Web/CSS/font
|
|
* @private
|
|
*/
|
|
function toFontString(font) {
|
|
if (!font || helpers_core.isNullOrUndef(font.size) || helpers_core.isNullOrUndef(font.family)) {
|
|
return null;
|
|
}
|
|
|
|
return (font.style ? font.style + ' ' : '')
|
|
+ (font.weight ? font.weight + ' ' : '')
|
|
+ font.size + 'px '
|
|
+ font.family;
|
|
}
|
|
|
|
/**
|
|
* @alias Chart.helpers.options
|
|
* @namespace
|
|
*/
|
|
var helpers_options = {
|
|
/**
|
|
* Converts the given line height `value` in pixels for a specific font `size`.
|
|
* @param {number|string} value - The lineHeight to parse (eg. 1.6, '14px', '75%', '1.6em').
|
|
* @param {number} size - The font size (in pixels) used to resolve relative `value`.
|
|
* @returns {number} The effective line height in pixels (size * 1.2 if value is invalid).
|
|
* @see https://developer.mozilla.org/en-US/docs/Web/CSS/line-height
|
|
* @since 2.7.0
|
|
*/
|
|
toLineHeight: function(value, size) {
|
|
var matches = ('' + value).match(/^(normal|(\d+(?:\.\d+)?)(px|em|%)?)$/);
|
|
if (!matches || matches[1] === 'normal') {
|
|
return size * 1.2;
|
|
}
|
|
|
|
value = +matches[2];
|
|
|
|
switch (matches[3]) {
|
|
case 'px':
|
|
return value;
|
|
case '%':
|
|
value /= 100;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return size * value;
|
|
},
|
|
|
|
/**
|
|
* Converts the given value into a padding object with pre-computed width/height.
|
|
* @param {number|object} value - If a number, set the value to all TRBL component,
|
|
* else, if and object, use defined properties and sets undefined ones to 0.
|
|
* @returns {object} The padding values (top, right, bottom, left, width, height)
|
|
* @since 2.7.0
|
|
*/
|
|
toPadding: function(value) {
|
|
var t, r, b, l;
|
|
|
|
if (helpers_core.isObject(value)) {
|
|
t = +value.top || 0;
|
|
r = +value.right || 0;
|
|
b = +value.bottom || 0;
|
|
l = +value.left || 0;
|
|
} else {
|
|
t = r = b = l = +value || 0;
|
|
}
|
|
|
|
return {
|
|
top: t,
|
|
right: r,
|
|
bottom: b,
|
|
left: l,
|
|
height: t + b,
|
|
width: l + r
|
|
};
|
|
},
|
|
|
|
/**
|
|
* Parses font options and returns the font object.
|
|
* @param {object} options - A object that contains font options to be parsed.
|
|
* @return {object} The font object.
|
|
* @todo Support font.* options and renamed to toFont().
|
|
* @private
|
|
*/
|
|
_parseFont: function(options) {
|
|
var globalDefaults = core_defaults.global;
|
|
var size = valueOrDefault(options.fontSize, globalDefaults.defaultFontSize);
|
|
var font = {
|
|
family: valueOrDefault(options.fontFamily, globalDefaults.defaultFontFamily),
|
|
lineHeight: helpers_core.options.toLineHeight(valueOrDefault(options.lineHeight, globalDefaults.defaultLineHeight), size),
|
|
size: size,
|
|
style: valueOrDefault(options.fontStyle, globalDefaults.defaultFontStyle),
|
|
weight: null,
|
|
string: ''
|
|
};
|
|
|
|
font.string = toFontString(font);
|
|
return font;
|
|
},
|
|
|
|
/**
|
|
* Evaluates the given `inputs` sequentially and returns the first defined value.
|
|
* @param {Array} inputs - An array of values, falling back to the last value.
|
|
* @param {object} [context] - If defined and the current value is a function, the value
|
|
* is called with `context` as first argument and the result becomes the new input.
|
|
* @param {number} [index] - If defined and the current value is an array, the value
|
|
* at `index` become the new input.
|
|
* @since 2.7.0
|
|
*/
|
|
resolve: function(inputs, context, index) {
|
|
var i, ilen, value;
|
|
|
|
for (i = 0, ilen = inputs.length; i < ilen; ++i) {
|
|
value = inputs[i];
|
|
if (value === undefined) {
|
|
continue;
|
|
}
|
|
if (context !== undefined && typeof value === 'function') {
|
|
value = value(context);
|
|
}
|
|
if (index !== undefined && helpers_core.isArray(value)) {
|
|
value = value[index];
|
|
}
|
|
if (value !== undefined) {
|
|
return value;
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
var helpers$1 = helpers_core;
|
|
var easing = helpers_easing;
|
|
var canvas = helpers_canvas;
|
|
var options = helpers_options;
|
|
helpers$1.easing = easing;
|
|
helpers$1.canvas = canvas;
|
|
helpers$1.options = options;
|
|
|
|
function interpolate(start, view, model, ease) {
|
|
var keys = Object.keys(model);
|
|
var i, ilen, key, actual, origin, target, type, c0, c1;
|
|
|
|
for (i = 0, ilen = keys.length; i < ilen; ++i) {
|
|
key = keys[i];
|
|
|
|
target = model[key];
|
|
|
|
// if a value is added to the model after pivot() has been called, the view
|
|
// doesn't contain it, so let's initialize the view to the target value.
|
|
if (!view.hasOwnProperty(key)) {
|
|
view[key] = target;
|
|
}
|
|
|
|
actual = view[key];
|
|
|
|
if (actual === target || key[0] === '_') {
|
|
continue;
|
|
}
|
|
|
|
if (!start.hasOwnProperty(key)) {
|
|
start[key] = actual;
|
|
}
|
|
|
|
origin = start[key];
|
|
|
|
type = typeof target;
|
|
|
|
if (type === typeof origin) {
|
|
if (type === 'string') {
|
|
c0 = chartjsColor(origin);
|
|
if (c0.valid) {
|
|
c1 = chartjsColor(target);
|
|
if (c1.valid) {
|
|
view[key] = c1.mix(c0, ease).rgbString();
|
|
continue;
|
|
}
|
|
}
|
|
} else if (helpers$1.isFinite(origin) && helpers$1.isFinite(target)) {
|
|
view[key] = origin + (target - origin) * ease;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
view[key] = target;
|
|
}
|
|
}
|
|
|
|
var Element = function(configuration) {
|
|
helpers$1.extend(this, configuration);
|
|
this.initialize.apply(this, arguments);
|
|
};
|
|
|
|
helpers$1.extend(Element.prototype, {
|
|
|
|
initialize: function() {
|
|
this.hidden = false;
|
|
},
|
|
|
|
pivot: function() {
|
|
var me = this;
|
|
if (!me._view) {
|
|
me._view = helpers$1.clone(me._model);
|
|
}
|
|
me._start = {};
|
|
return me;
|
|
},
|
|
|
|
transition: function(ease) {
|
|
var me = this;
|
|
var model = me._model;
|
|
var start = me._start;
|
|
var view = me._view;
|
|
|
|
// No animation -> No Transition
|
|
if (!model || ease === 1) {
|
|
me._view = model;
|
|
me._start = null;
|
|
return me;
|
|
}
|
|
|
|
if (!view) {
|
|
view = me._view = {};
|
|
}
|
|
|
|
if (!start) {
|
|
start = me._start = {};
|
|
}
|
|
|
|
interpolate(start, view, model, ease);
|
|
|
|
return me;
|
|
},
|
|
|
|
tooltipPosition: function() {
|
|
return {
|
|
x: this._model.x,
|
|
y: this._model.y
|
|
};
|
|
},
|
|
|
|
hasValue: function() {
|
|
return helpers$1.isNumber(this._model.x) && helpers$1.isNumber(this._model.y);
|
|
}
|
|
});
|
|
|
|
Element.extend = helpers$1.inherits;
|
|
|
|
var core_element = Element;
|
|
|
|
var exports$2 = core_element.extend({
|
|
chart: null, // the animation associated chart instance
|
|
currentStep: 0, // the current animation step
|
|
numSteps: 60, // default number of steps
|
|
easing: '', // the easing to use for this animation
|
|
render: null, // render function used by the animation service
|
|
|
|
onAnimationProgress: null, // user specified callback to fire on each step of the animation
|
|
onAnimationComplete: null, // user specified callback to fire when the animation finishes
|
|
});
|
|
|
|
var core_animation = exports$2;
|
|
|
|
// DEPRECATIONS
|
|
|
|
/**
|
|
* Provided for backward compatibility, use Chart.Animation instead
|
|
* @prop Chart.Animation#animationObject
|
|
* @deprecated since version 2.6.0
|
|
* @todo remove at version 3
|
|
*/
|
|
Object.defineProperty(exports$2.prototype, 'animationObject', {
|
|
get: function() {
|
|
return this;
|
|
}
|
|
});
|
|
|
|
/**
|
|
* Provided for backward compatibility, use Chart.Animation#chart instead
|
|
* @prop Chart.Animation#chartInstance
|
|
* @deprecated since version 2.6.0
|
|
* @todo remove at version 3
|
|
*/
|
|
Object.defineProperty(exports$2.prototype, 'chartInstance', {
|
|
get: function() {
|
|
return this.chart;
|
|
},
|
|
set: function(value) {
|
|
this.chart = value;
|
|
}
|
|
});
|
|
|
|
core_defaults._set('global', {
|
|
animation: {
|
|
duration: 1000,
|
|
easing: 'easeOutQuart',
|
|
onProgress: helpers$1.noop,
|
|
onComplete: helpers$1.noop
|
|
}
|
|
});
|
|
|
|
var core_animations = {
|
|
animations: [],
|
|
request: null,
|
|
|
|
/**
|
|
* @param {Chart} chart - The chart to animate.
|
|
* @param {Chart.Animation} animation - The animation that we will animate.
|
|
* @param {number} duration - The animation duration in ms.
|
|
* @param {boolean} lazy - if true, the chart is not marked as animating to enable more responsive interactions
|
|
*/
|
|
addAnimation: function(chart, animation, duration, lazy) {
|
|
var animations = this.animations;
|
|
var i, ilen;
|
|
|
|
animation.chart = chart;
|
|
animation.startTime = Date.now();
|
|
animation.duration = duration;
|
|
|
|
if (!lazy) {
|
|
chart.animating = true;
|
|
}
|
|
|
|
for (i = 0, ilen = animations.length; i < ilen; ++i) {
|
|
if (animations[i].chart === chart) {
|
|
animations[i] = animation;
|
|
return;
|
|
}
|
|
}
|
|
|
|
animations.push(animation);
|
|
|
|
// If there are no animations queued, manually kickstart a digest, for lack of a better word
|
|
if (animations.length === 1) {
|
|
this.requestAnimationFrame();
|
|
}
|
|
},
|
|
|
|
cancelAnimation: function(chart) {
|
|
var index = helpers$1.findIndex(this.animations, function(animation) {
|
|
return animation.chart === chart;
|
|
});
|
|
|
|
if (index !== -1) {
|
|
this.animations.splice(index, 1);
|
|
chart.animating = false;
|
|
}
|
|
},
|
|
|
|
requestAnimationFrame: function() {
|
|
var me = this;
|
|
if (me.request === null) {
|
|
// Skip animation frame requests until the active one is executed.
|
|
// This can happen when processing mouse events, e.g. 'mousemove'
|
|
// and 'mouseout' events will trigger multiple renders.
|
|
me.request = helpers$1.requestAnimFrame.call(window, function() {
|
|
me.request = null;
|
|
me.startDigest();
|
|
});
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
startDigest: function() {
|
|
var me = this;
|
|
|
|
me.advance();
|
|
|
|
// Do we have more stuff to animate?
|
|
if (me.animations.length > 0) {
|
|
me.requestAnimationFrame();
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
advance: function() {
|
|
var animations = this.animations;
|
|
var animation, chart, numSteps, nextStep;
|
|
var i = 0;
|
|
|
|
// 1 animation per chart, so we are looping charts here
|
|
while (i < animations.length) {
|
|
animation = animations[i];
|
|
chart = animation.chart;
|
|
numSteps = animation.numSteps;
|
|
|
|
// Make sure that currentStep starts at 1
|
|
// https://github.com/chartjs/Chart.js/issues/6104
|
|
nextStep = Math.floor((Date.now() - animation.startTime) / animation.duration * numSteps) + 1;
|
|
animation.currentStep = Math.min(nextStep, numSteps);
|
|
|
|
helpers$1.callback(animation.render, [chart, animation], chart);
|
|
helpers$1.callback(animation.onAnimationProgress, [animation], chart);
|
|
|
|
if (animation.currentStep >= numSteps) {
|
|
helpers$1.callback(animation.onAnimationComplete, [animation], chart);
|
|
chart.animating = false;
|
|
animations.splice(i, 1);
|
|
} else {
|
|
++i;
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
var resolve = helpers$1.options.resolve;
|
|
|
|
var arrayEvents = ['push', 'pop', 'shift', 'splice', 'unshift'];
|
|
|
|
/**
|
|
* Hooks the array methods that add or remove values ('push', pop', 'shift', 'splice',
|
|
* 'unshift') and notify the listener AFTER the array has been altered. Listeners are
|
|
* called on the 'onData*' callbacks (e.g. onDataPush, etc.) with same arguments.
|
|
*/
|
|
function listenArrayEvents(array, listener) {
|
|
if (array._chartjs) {
|
|
array._chartjs.listeners.push(listener);
|
|
return;
|
|
}
|
|
|
|
Object.defineProperty(array, '_chartjs', {
|
|
configurable: true,
|
|
enumerable: false,
|
|
value: {
|
|
listeners: [listener]
|
|
}
|
|
});
|
|
|
|
arrayEvents.forEach(function(key) {
|
|
var method = 'onData' + key.charAt(0).toUpperCase() + key.slice(1);
|
|
var base = array[key];
|
|
|
|
Object.defineProperty(array, key, {
|
|
configurable: true,
|
|
enumerable: false,
|
|
value: function() {
|
|
var args = Array.prototype.slice.call(arguments);
|
|
var res = base.apply(this, args);
|
|
|
|
helpers$1.each(array._chartjs.listeners, function(object) {
|
|
if (typeof object[method] === 'function') {
|
|
object[method].apply(object, args);
|
|
}
|
|
});
|
|
|
|
return res;
|
|
}
|
|
});
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Removes the given array event listener and cleanup extra attached properties (such as
|
|
* the _chartjs stub and overridden methods) if array doesn't have any more listeners.
|
|
*/
|
|
function unlistenArrayEvents(array, listener) {
|
|
var stub = array._chartjs;
|
|
if (!stub) {
|
|
return;
|
|
}
|
|
|
|
var listeners = stub.listeners;
|
|
var index = listeners.indexOf(listener);
|
|
if (index !== -1) {
|
|
listeners.splice(index, 1);
|
|
}
|
|
|
|
if (listeners.length > 0) {
|
|
return;
|
|
}
|
|
|
|
arrayEvents.forEach(function(key) {
|
|
delete array[key];
|
|
});
|
|
|
|
delete array._chartjs;
|
|
}
|
|
|
|
// Base class for all dataset controllers (line, bar, etc)
|
|
var DatasetController = function(chart, datasetIndex) {
|
|
this.initialize(chart, datasetIndex);
|
|
};
|
|
|
|
helpers$1.extend(DatasetController.prototype, {
|
|
|
|
/**
|
|
* Element type used to generate a meta dataset (e.g. Chart.element.Line).
|
|
* @type {Chart.core.element}
|
|
*/
|
|
datasetElementType: null,
|
|
|
|
/**
|
|
* Element type used to generate a meta data (e.g. Chart.element.Point).
|
|
* @type {Chart.core.element}
|
|
*/
|
|
dataElementType: null,
|
|
|
|
initialize: function(chart, datasetIndex) {
|
|
var me = this;
|
|
me.chart = chart;
|
|
me.index = datasetIndex;
|
|
me.linkScales();
|
|
me.addElements();
|
|
},
|
|
|
|
updateIndex: function(datasetIndex) {
|
|
this.index = datasetIndex;
|
|
},
|
|
|
|
linkScales: function() {
|
|
var me = this;
|
|
var meta = me.getMeta();
|
|
var dataset = me.getDataset();
|
|
|
|
if (meta.xAxisID === null || !(meta.xAxisID in me.chart.scales)) {
|
|
meta.xAxisID = dataset.xAxisID || me.chart.options.scales.xAxes[0].id;
|
|
}
|
|
if (meta.yAxisID === null || !(meta.yAxisID in me.chart.scales)) {
|
|
meta.yAxisID = dataset.yAxisID || me.chart.options.scales.yAxes[0].id;
|
|
}
|
|
},
|
|
|
|
getDataset: function() {
|
|
return this.chart.data.datasets[this.index];
|
|
},
|
|
|
|
getMeta: function() {
|
|
return this.chart.getDatasetMeta(this.index);
|
|
},
|
|
|
|
getScaleForId: function(scaleID) {
|
|
return this.chart.scales[scaleID];
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_getValueScaleId: function() {
|
|
return this.getMeta().yAxisID;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_getIndexScaleId: function() {
|
|
return this.getMeta().xAxisID;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_getValueScale: function() {
|
|
return this.getScaleForId(this._getValueScaleId());
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_getIndexScale: function() {
|
|
return this.getScaleForId(this._getIndexScaleId());
|
|
},
|
|
|
|
reset: function() {
|
|
this.update(true);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
destroy: function() {
|
|
if (this._data) {
|
|
unlistenArrayEvents(this._data, this);
|
|
}
|
|
},
|
|
|
|
createMetaDataset: function() {
|
|
var me = this;
|
|
var type = me.datasetElementType;
|
|
return type && new type({
|
|
_chart: me.chart,
|
|
_datasetIndex: me.index
|
|
});
|
|
},
|
|
|
|
createMetaData: function(index) {
|
|
var me = this;
|
|
var type = me.dataElementType;
|
|
return type && new type({
|
|
_chart: me.chart,
|
|
_datasetIndex: me.index,
|
|
_index: index
|
|
});
|
|
},
|
|
|
|
addElements: function() {
|
|
var me = this;
|
|
var meta = me.getMeta();
|
|
var data = me.getDataset().data || [];
|
|
var metaData = meta.data;
|
|
var i, ilen;
|
|
|
|
for (i = 0, ilen = data.length; i < ilen; ++i) {
|
|
metaData[i] = metaData[i] || me.createMetaData(i);
|
|
}
|
|
|
|
meta.dataset = meta.dataset || me.createMetaDataset();
|
|
},
|
|
|
|
addElementAndReset: function(index) {
|
|
var element = this.createMetaData(index);
|
|
this.getMeta().data.splice(index, 0, element);
|
|
this.updateElement(element, index, true);
|
|
},
|
|
|
|
buildOrUpdateElements: function() {
|
|
var me = this;
|
|
var dataset = me.getDataset();
|
|
var data = dataset.data || (dataset.data = []);
|
|
|
|
// In order to correctly handle data addition/deletion animation (an thus simulate
|
|
// real-time charts), we need to monitor these data modifications and synchronize
|
|
// the internal meta data accordingly.
|
|
if (me._data !== data) {
|
|
if (me._data) {
|
|
// This case happens when the user replaced the data array instance.
|
|
unlistenArrayEvents(me._data, me);
|
|
}
|
|
|
|
if (data && Object.isExtensible(data)) {
|
|
listenArrayEvents(data, me);
|
|
}
|
|
me._data = data;
|
|
}
|
|
|
|
// Re-sync meta data in case the user replaced the data array or if we missed
|
|
// any updates and so make sure that we handle number of datapoints changing.
|
|
me.resyncElements();
|
|
},
|
|
|
|
update: helpers$1.noop,
|
|
|
|
transition: function(easingValue) {
|
|
var meta = this.getMeta();
|
|
var elements = meta.data || [];
|
|
var ilen = elements.length;
|
|
var i = 0;
|
|
|
|
for (; i < ilen; ++i) {
|
|
elements[i].transition(easingValue);
|
|
}
|
|
|
|
if (meta.dataset) {
|
|
meta.dataset.transition(easingValue);
|
|
}
|
|
},
|
|
|
|
draw: function() {
|
|
var meta = this.getMeta();
|
|
var elements = meta.data || [];
|
|
var ilen = elements.length;
|
|
var i = 0;
|
|
|
|
if (meta.dataset) {
|
|
meta.dataset.draw();
|
|
}
|
|
|
|
for (; i < ilen; ++i) {
|
|
elements[i].draw();
|
|
}
|
|
},
|
|
|
|
removeHoverStyle: function(element) {
|
|
helpers$1.merge(element._model, element.$previousStyle || {});
|
|
delete element.$previousStyle;
|
|
},
|
|
|
|
setHoverStyle: function(element) {
|
|
var dataset = this.chart.data.datasets[element._datasetIndex];
|
|
var index = element._index;
|
|
var custom = element.custom || {};
|
|
var model = element._model;
|
|
var getHoverColor = helpers$1.getHoverColor;
|
|
|
|
element.$previousStyle = {
|
|
backgroundColor: model.backgroundColor,
|
|
borderColor: model.borderColor,
|
|
borderWidth: model.borderWidth
|
|
};
|
|
|
|
model.backgroundColor = resolve([custom.hoverBackgroundColor, dataset.hoverBackgroundColor, getHoverColor(model.backgroundColor)], undefined, index);
|
|
model.borderColor = resolve([custom.hoverBorderColor, dataset.hoverBorderColor, getHoverColor(model.borderColor)], undefined, index);
|
|
model.borderWidth = resolve([custom.hoverBorderWidth, dataset.hoverBorderWidth, model.borderWidth], undefined, index);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
resyncElements: function() {
|
|
var me = this;
|
|
var meta = me.getMeta();
|
|
var data = me.getDataset().data;
|
|
var numMeta = meta.data.length;
|
|
var numData = data.length;
|
|
|
|
if (numData < numMeta) {
|
|
meta.data.splice(numData, numMeta - numData);
|
|
} else if (numData > numMeta) {
|
|
me.insertElements(numMeta, numData - numMeta);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
insertElements: function(start, count) {
|
|
for (var i = 0; i < count; ++i) {
|
|
this.addElementAndReset(start + i);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
onDataPush: function() {
|
|
var count = arguments.length;
|
|
this.insertElements(this.getDataset().data.length - count, count);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
onDataPop: function() {
|
|
this.getMeta().data.pop();
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
onDataShift: function() {
|
|
this.getMeta().data.shift();
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
onDataSplice: function(start, count) {
|
|
this.getMeta().data.splice(start, count);
|
|
this.insertElements(start, arguments.length - 2);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
onDataUnshift: function() {
|
|
this.insertElements(0, arguments.length);
|
|
}
|
|
});
|
|
|
|
DatasetController.extend = helpers$1.inherits;
|
|
|
|
var core_datasetController = DatasetController;
|
|
|
|
core_defaults._set('global', {
|
|
elements: {
|
|
arc: {
|
|
backgroundColor: core_defaults.global.defaultColor,
|
|
borderColor: '#fff',
|
|
borderWidth: 2,
|
|
borderAlign: 'center'
|
|
}
|
|
}
|
|
});
|
|
|
|
var element_arc = core_element.extend({
|
|
inLabelRange: function(mouseX) {
|
|
var vm = this._view;
|
|
|
|
if (vm) {
|
|
return (Math.pow(mouseX - vm.x, 2) < Math.pow(vm.radius + vm.hoverRadius, 2));
|
|
}
|
|
return false;
|
|
},
|
|
|
|
inRange: function(chartX, chartY) {
|
|
var vm = this._view;
|
|
|
|
if (vm) {
|
|
var pointRelativePosition = helpers$1.getAngleFromPoint(vm, {x: chartX, y: chartY});
|
|
var angle = pointRelativePosition.angle;
|
|
var distance = pointRelativePosition.distance;
|
|
|
|
// Sanitise angle range
|
|
var startAngle = vm.startAngle;
|
|
var endAngle = vm.endAngle;
|
|
while (endAngle < startAngle) {
|
|
endAngle += 2.0 * Math.PI;
|
|
}
|
|
while (angle > endAngle) {
|
|
angle -= 2.0 * Math.PI;
|
|
}
|
|
while (angle < startAngle) {
|
|
angle += 2.0 * Math.PI;
|
|
}
|
|
|
|
// Check if within the range of the open/close angle
|
|
var betweenAngles = (angle >= startAngle && angle <= endAngle);
|
|
var withinRadius = (distance >= vm.innerRadius && distance <= vm.outerRadius);
|
|
|
|
return (betweenAngles && withinRadius);
|
|
}
|
|
return false;
|
|
},
|
|
|
|
getCenterPoint: function() {
|
|
var vm = this._view;
|
|
var halfAngle = (vm.startAngle + vm.endAngle) / 2;
|
|
var halfRadius = (vm.innerRadius + vm.outerRadius) / 2;
|
|
return {
|
|
x: vm.x + Math.cos(halfAngle) * halfRadius,
|
|
y: vm.y + Math.sin(halfAngle) * halfRadius
|
|
};
|
|
},
|
|
|
|
getArea: function() {
|
|
var vm = this._view;
|
|
return Math.PI * ((vm.endAngle - vm.startAngle) / (2 * Math.PI)) * (Math.pow(vm.outerRadius, 2) - Math.pow(vm.innerRadius, 2));
|
|
},
|
|
|
|
tooltipPosition: function() {
|
|
var vm = this._view;
|
|
var centreAngle = vm.startAngle + ((vm.endAngle - vm.startAngle) / 2);
|
|
var rangeFromCentre = (vm.outerRadius - vm.innerRadius) / 2 + vm.innerRadius;
|
|
|
|
return {
|
|
x: vm.x + (Math.cos(centreAngle) * rangeFromCentre),
|
|
y: vm.y + (Math.sin(centreAngle) * rangeFromCentre)
|
|
};
|
|
},
|
|
|
|
draw: function() {
|
|
var ctx = this._chart.ctx;
|
|
var vm = this._view;
|
|
var sA = vm.startAngle;
|
|
var eA = vm.endAngle;
|
|
var pixelMargin = (vm.borderAlign === 'inner') ? 0.33 : 0;
|
|
var angleMargin;
|
|
|
|
ctx.save();
|
|
|
|
ctx.beginPath();
|
|
ctx.arc(vm.x, vm.y, Math.max(vm.outerRadius - pixelMargin, 0), sA, eA);
|
|
ctx.arc(vm.x, vm.y, vm.innerRadius, eA, sA, true);
|
|
ctx.closePath();
|
|
|
|
ctx.fillStyle = vm.backgroundColor;
|
|
ctx.fill();
|
|
|
|
if (vm.borderWidth) {
|
|
if (vm.borderAlign === 'inner') {
|
|
// Draw an inner border by cliping the arc and drawing a double-width border
|
|
// Enlarge the clipping arc by 0.33 pixels to eliminate glitches between borders
|
|
ctx.beginPath();
|
|
angleMargin = pixelMargin / vm.outerRadius;
|
|
ctx.arc(vm.x, vm.y, vm.outerRadius, sA - angleMargin, eA + angleMargin);
|
|
if (vm.innerRadius > pixelMargin) {
|
|
angleMargin = pixelMargin / vm.innerRadius;
|
|
ctx.arc(vm.x, vm.y, vm.innerRadius - pixelMargin, eA + angleMargin, sA - angleMargin, true);
|
|
} else {
|
|
ctx.arc(vm.x, vm.y, pixelMargin, eA + Math.PI / 2, sA - Math.PI / 2);
|
|
}
|
|
ctx.closePath();
|
|
ctx.clip();
|
|
|
|
ctx.beginPath();
|
|
ctx.arc(vm.x, vm.y, vm.outerRadius, sA, eA);
|
|
ctx.arc(vm.x, vm.y, vm.innerRadius, eA, sA, true);
|
|
ctx.closePath();
|
|
|
|
ctx.lineWidth = vm.borderWidth * 2;
|
|
ctx.lineJoin = 'round';
|
|
} else {
|
|
ctx.lineWidth = vm.borderWidth;
|
|
ctx.lineJoin = 'bevel';
|
|
}
|
|
|
|
ctx.strokeStyle = vm.borderColor;
|
|
ctx.stroke();
|
|
}
|
|
|
|
ctx.restore();
|
|
}
|
|
});
|
|
|
|
var valueOrDefault$1 = helpers$1.valueOrDefault;
|
|
|
|
var defaultColor = core_defaults.global.defaultColor;
|
|
|
|
core_defaults._set('global', {
|
|
elements: {
|
|
line: {
|
|
tension: 0.4,
|
|
backgroundColor: defaultColor,
|
|
borderWidth: 3,
|
|
borderColor: defaultColor,
|
|
borderCapStyle: 'butt',
|
|
borderDash: [],
|
|
borderDashOffset: 0.0,
|
|
borderJoinStyle: 'miter',
|
|
capBezierPoints: true,
|
|
fill: true, // do we fill in the area between the line and its base axis
|
|
}
|
|
}
|
|
});
|
|
|
|
var element_line = core_element.extend({
|
|
draw: function() {
|
|
var me = this;
|
|
var vm = me._view;
|
|
var ctx = me._chart.ctx;
|
|
var spanGaps = vm.spanGaps;
|
|
var points = me._children.slice(); // clone array
|
|
var globalDefaults = core_defaults.global;
|
|
var globalOptionLineElements = globalDefaults.elements.line;
|
|
var lastDrawnIndex = -1;
|
|
var index, current, previous, currentVM;
|
|
|
|
// If we are looping, adding the first point again
|
|
if (me._loop && points.length) {
|
|
points.push(points[0]);
|
|
}
|
|
|
|
ctx.save();
|
|
|
|
// Stroke Line Options
|
|
ctx.lineCap = vm.borderCapStyle || globalOptionLineElements.borderCapStyle;
|
|
|
|
// IE 9 and 10 do not support line dash
|
|
if (ctx.setLineDash) {
|
|
ctx.setLineDash(vm.borderDash || globalOptionLineElements.borderDash);
|
|
}
|
|
|
|
ctx.lineDashOffset = valueOrDefault$1(vm.borderDashOffset, globalOptionLineElements.borderDashOffset);
|
|
ctx.lineJoin = vm.borderJoinStyle || globalOptionLineElements.borderJoinStyle;
|
|
ctx.lineWidth = valueOrDefault$1(vm.borderWidth, globalOptionLineElements.borderWidth);
|
|
ctx.strokeStyle = vm.borderColor || globalDefaults.defaultColor;
|
|
|
|
// Stroke Line
|
|
ctx.beginPath();
|
|
lastDrawnIndex = -1;
|
|
|
|
for (index = 0; index < points.length; ++index) {
|
|
current = points[index];
|
|
previous = helpers$1.previousItem(points, index);
|
|
currentVM = current._view;
|
|
|
|
// First point moves to it's starting position no matter what
|
|
if (index === 0) {
|
|
if (!currentVM.skip) {
|
|
ctx.moveTo(currentVM.x, currentVM.y);
|
|
lastDrawnIndex = index;
|
|
}
|
|
} else {
|
|
previous = lastDrawnIndex === -1 ? previous : points[lastDrawnIndex];
|
|
|
|
if (!currentVM.skip) {
|
|
if ((lastDrawnIndex !== (index - 1) && !spanGaps) || lastDrawnIndex === -1) {
|
|
// There was a gap and this is the first point after the gap
|
|
ctx.moveTo(currentVM.x, currentVM.y);
|
|
} else {
|
|
// Line to next point
|
|
helpers$1.canvas.lineTo(ctx, previous._view, current._view);
|
|
}
|
|
lastDrawnIndex = index;
|
|
}
|
|
}
|
|
}
|
|
|
|
ctx.stroke();
|
|
ctx.restore();
|
|
}
|
|
});
|
|
|
|
var valueOrDefault$2 = helpers$1.valueOrDefault;
|
|
|
|
var defaultColor$1 = core_defaults.global.defaultColor;
|
|
|
|
core_defaults._set('global', {
|
|
elements: {
|
|
point: {
|
|
radius: 3,
|
|
pointStyle: 'circle',
|
|
backgroundColor: defaultColor$1,
|
|
borderColor: defaultColor$1,
|
|
borderWidth: 1,
|
|
// Hover
|
|
hitRadius: 1,
|
|
hoverRadius: 4,
|
|
hoverBorderWidth: 1
|
|
}
|
|
}
|
|
});
|
|
|
|
function xRange(mouseX) {
|
|
var vm = this._view;
|
|
return vm ? (Math.abs(mouseX - vm.x) < vm.radius + vm.hitRadius) : false;
|
|
}
|
|
|
|
function yRange(mouseY) {
|
|
var vm = this._view;
|
|
return vm ? (Math.abs(mouseY - vm.y) < vm.radius + vm.hitRadius) : false;
|
|
}
|
|
|
|
var element_point = core_element.extend({
|
|
inRange: function(mouseX, mouseY) {
|
|
var vm = this._view;
|
|
return vm ? ((Math.pow(mouseX - vm.x, 2) + Math.pow(mouseY - vm.y, 2)) < Math.pow(vm.hitRadius + vm.radius, 2)) : false;
|
|
},
|
|
|
|
inLabelRange: xRange,
|
|
inXRange: xRange,
|
|
inYRange: yRange,
|
|
|
|
getCenterPoint: function() {
|
|
var vm = this._view;
|
|
return {
|
|
x: vm.x,
|
|
y: vm.y
|
|
};
|
|
},
|
|
|
|
getArea: function() {
|
|
return Math.PI * Math.pow(this._view.radius, 2);
|
|
},
|
|
|
|
tooltipPosition: function() {
|
|
var vm = this._view;
|
|
return {
|
|
x: vm.x,
|
|
y: vm.y,
|
|
padding: vm.radius + vm.borderWidth
|
|
};
|
|
},
|
|
|
|
draw: function(chartArea) {
|
|
var vm = this._view;
|
|
var ctx = this._chart.ctx;
|
|
var pointStyle = vm.pointStyle;
|
|
var rotation = vm.rotation;
|
|
var radius = vm.radius;
|
|
var x = vm.x;
|
|
var y = vm.y;
|
|
var globalDefaults = core_defaults.global;
|
|
var defaultColor = globalDefaults.defaultColor; // eslint-disable-line no-shadow
|
|
|
|
if (vm.skip) {
|
|
return;
|
|
}
|
|
|
|
// Clipping for Points.
|
|
if (chartArea === undefined || helpers$1.canvas._isPointInArea(vm, chartArea)) {
|
|
ctx.strokeStyle = vm.borderColor || defaultColor;
|
|
ctx.lineWidth = valueOrDefault$2(vm.borderWidth, globalDefaults.elements.point.borderWidth);
|
|
ctx.fillStyle = vm.backgroundColor || defaultColor;
|
|
helpers$1.canvas.drawPoint(ctx, pointStyle, radius, x, y, rotation);
|
|
}
|
|
}
|
|
});
|
|
|
|
var defaultColor$2 = core_defaults.global.defaultColor;
|
|
|
|
core_defaults._set('global', {
|
|
elements: {
|
|
rectangle: {
|
|
backgroundColor: defaultColor$2,
|
|
borderColor: defaultColor$2,
|
|
borderSkipped: 'bottom',
|
|
borderWidth: 0
|
|
}
|
|
}
|
|
});
|
|
|
|
function isVertical(vm) {
|
|
return vm && vm.width !== undefined;
|
|
}
|
|
|
|
/**
|
|
* Helper function to get the bounds of the bar regardless of the orientation
|
|
* @param bar {Chart.Element.Rectangle} the bar
|
|
* @return {Bounds} bounds of the bar
|
|
* @private
|
|
*/
|
|
function getBarBounds(vm) {
|
|
var x1, x2, y1, y2, half;
|
|
|
|
if (isVertical(vm)) {
|
|
half = vm.width / 2;
|
|
x1 = vm.x - half;
|
|
x2 = vm.x + half;
|
|
y1 = Math.min(vm.y, vm.base);
|
|
y2 = Math.max(vm.y, vm.base);
|
|
} else {
|
|
half = vm.height / 2;
|
|
x1 = Math.min(vm.x, vm.base);
|
|
x2 = Math.max(vm.x, vm.base);
|
|
y1 = vm.y - half;
|
|
y2 = vm.y + half;
|
|
}
|
|
|
|
return {
|
|
left: x1,
|
|
top: y1,
|
|
right: x2,
|
|
bottom: y2
|
|
};
|
|
}
|
|
|
|
function swap(orig, v1, v2) {
|
|
return orig === v1 ? v2 : orig === v2 ? v1 : orig;
|
|
}
|
|
|
|
function parseBorderSkipped(vm) {
|
|
var edge = vm.borderSkipped;
|
|
var res = {};
|
|
|
|
if (!edge) {
|
|
return res;
|
|
}
|
|
|
|
if (vm.horizontal) {
|
|
if (vm.base > vm.x) {
|
|
edge = swap(edge, 'left', 'right');
|
|
}
|
|
} else if (vm.base < vm.y) {
|
|
edge = swap(edge, 'bottom', 'top');
|
|
}
|
|
|
|
res[edge] = true;
|
|
return res;
|
|
}
|
|
|
|
function parseBorderWidth(vm, maxW, maxH) {
|
|
var value = vm.borderWidth;
|
|
var skip = parseBorderSkipped(vm);
|
|
var t, r, b, l;
|
|
|
|
if (helpers$1.isObject(value)) {
|
|
t = +value.top || 0;
|
|
r = +value.right || 0;
|
|
b = +value.bottom || 0;
|
|
l = +value.left || 0;
|
|
} else {
|
|
t = r = b = l = +value || 0;
|
|
}
|
|
|
|
return {
|
|
t: skip.top || (t < 0) ? 0 : t > maxH ? maxH : t,
|
|
r: skip.right || (r < 0) ? 0 : r > maxW ? maxW : r,
|
|
b: skip.bottom || (b < 0) ? 0 : b > maxH ? maxH : b,
|
|
l: skip.left || (l < 0) ? 0 : l > maxW ? maxW : l
|
|
};
|
|
}
|
|
|
|
function boundingRects(vm) {
|
|
var bounds = getBarBounds(vm);
|
|
var width = bounds.right - bounds.left;
|
|
var height = bounds.bottom - bounds.top;
|
|
var border = parseBorderWidth(vm, width / 2, height / 2);
|
|
|
|
return {
|
|
outer: {
|
|
x: bounds.left,
|
|
y: bounds.top,
|
|
w: width,
|
|
h: height
|
|
},
|
|
inner: {
|
|
x: bounds.left + border.l,
|
|
y: bounds.top + border.t,
|
|
w: width - border.l - border.r,
|
|
h: height - border.t - border.b
|
|
}
|
|
};
|
|
}
|
|
|
|
function inRange(vm, x, y) {
|
|
var skipX = x === null;
|
|
var skipY = y === null;
|
|
var bounds = !vm || (skipX && skipY) ? false : getBarBounds(vm);
|
|
|
|
return bounds
|
|
&& (skipX || x >= bounds.left && x <= bounds.right)
|
|
&& (skipY || y >= bounds.top && y <= bounds.bottom);
|
|
}
|
|
|
|
var element_rectangle = core_element.extend({
|
|
draw: function() {
|
|
var ctx = this._chart.ctx;
|
|
var vm = this._view;
|
|
var rects = boundingRects(vm);
|
|
var outer = rects.outer;
|
|
var inner = rects.inner;
|
|
|
|
ctx.fillStyle = vm.backgroundColor;
|
|
ctx.fillRect(outer.x, outer.y, outer.w, outer.h);
|
|
|
|
if (outer.w === inner.w && outer.h === inner.h) {
|
|
return;
|
|
}
|
|
|
|
ctx.save();
|
|
ctx.beginPath();
|
|
ctx.rect(outer.x, outer.y, outer.w, outer.h);
|
|
ctx.clip();
|
|
ctx.fillStyle = vm.borderColor;
|
|
ctx.rect(inner.x, inner.y, inner.w, inner.h);
|
|
ctx.fill('evenodd');
|
|
ctx.restore();
|
|
},
|
|
|
|
height: function() {
|
|
var vm = this._view;
|
|
return vm.base - vm.y;
|
|
},
|
|
|
|
inRange: function(mouseX, mouseY) {
|
|
return inRange(this._view, mouseX, mouseY);
|
|
},
|
|
|
|
inLabelRange: function(mouseX, mouseY) {
|
|
var vm = this._view;
|
|
return isVertical(vm)
|
|
? inRange(vm, mouseX, null)
|
|
: inRange(vm, null, mouseY);
|
|
},
|
|
|
|
inXRange: function(mouseX) {
|
|
return inRange(this._view, mouseX, null);
|
|
},
|
|
|
|
inYRange: function(mouseY) {
|
|
return inRange(this._view, null, mouseY);
|
|
},
|
|
|
|
getCenterPoint: function() {
|
|
var vm = this._view;
|
|
var x, y;
|
|
if (isVertical(vm)) {
|
|
x = vm.x;
|
|
y = (vm.y + vm.base) / 2;
|
|
} else {
|
|
x = (vm.x + vm.base) / 2;
|
|
y = vm.y;
|
|
}
|
|
|
|
return {x: x, y: y};
|
|
},
|
|
|
|
getArea: function() {
|
|
var vm = this._view;
|
|
|
|
return isVertical(vm)
|
|
? vm.width * Math.abs(vm.y - vm.base)
|
|
: vm.height * Math.abs(vm.x - vm.base);
|
|
},
|
|
|
|
tooltipPosition: function() {
|
|
var vm = this._view;
|
|
return {
|
|
x: vm.x,
|
|
y: vm.y
|
|
};
|
|
}
|
|
});
|
|
|
|
var elements = {};
|
|
var Arc = element_arc;
|
|
var Line = element_line;
|
|
var Point = element_point;
|
|
var Rectangle = element_rectangle;
|
|
elements.Arc = Arc;
|
|
elements.Line = Line;
|
|
elements.Point = Point;
|
|
elements.Rectangle = Rectangle;
|
|
|
|
var resolve$1 = helpers$1.options.resolve;
|
|
|
|
core_defaults._set('bar', {
|
|
hover: {
|
|
mode: 'label'
|
|
},
|
|
|
|
scales: {
|
|
xAxes: [{
|
|
type: 'category',
|
|
categoryPercentage: 0.8,
|
|
barPercentage: 0.9,
|
|
offset: true,
|
|
gridLines: {
|
|
offsetGridLines: true
|
|
}
|
|
}],
|
|
|
|
yAxes: [{
|
|
type: 'linear'
|
|
}]
|
|
}
|
|
});
|
|
|
|
/**
|
|
* Computes the "optimal" sample size to maintain bars equally sized while preventing overlap.
|
|
* @private
|
|
*/
|
|
function computeMinSampleSize(scale, pixels) {
|
|
var min = scale.isHorizontal() ? scale.width : scale.height;
|
|
var ticks = scale.getTicks();
|
|
var prev, curr, i, ilen;
|
|
|
|
for (i = 1, ilen = pixels.length; i < ilen; ++i) {
|
|
min = Math.min(min, Math.abs(pixels[i] - pixels[i - 1]));
|
|
}
|
|
|
|
for (i = 0, ilen = ticks.length; i < ilen; ++i) {
|
|
curr = scale.getPixelForTick(i);
|
|
min = i > 0 ? Math.min(min, curr - prev) : min;
|
|
prev = curr;
|
|
}
|
|
|
|
return min;
|
|
}
|
|
|
|
/**
|
|
* Computes an "ideal" category based on the absolute bar thickness or, if undefined or null,
|
|
* uses the smallest interval (see computeMinSampleSize) that prevents bar overlapping. This
|
|
* mode currently always generates bars equally sized (until we introduce scriptable options?).
|
|
* @private
|
|
*/
|
|
function computeFitCategoryTraits(index, ruler, options) {
|
|
var thickness = options.barThickness;
|
|
var count = ruler.stackCount;
|
|
var curr = ruler.pixels[index];
|
|
var size, ratio;
|
|
|
|
if (helpers$1.isNullOrUndef(thickness)) {
|
|
size = ruler.min * options.categoryPercentage;
|
|
ratio = options.barPercentage;
|
|
} else {
|
|
// When bar thickness is enforced, category and bar percentages are ignored.
|
|
// Note(SB): we could add support for relative bar thickness (e.g. barThickness: '50%')
|
|
// and deprecate barPercentage since this value is ignored when thickness is absolute.
|
|
size = thickness * count;
|
|
ratio = 1;
|
|
}
|
|
|
|
return {
|
|
chunk: size / count,
|
|
ratio: ratio,
|
|
start: curr - (size / 2)
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Computes an "optimal" category that globally arranges bars side by side (no gap when
|
|
* percentage options are 1), based on the previous and following categories. This mode
|
|
* generates bars with different widths when data are not evenly spaced.
|
|
* @private
|
|
*/
|
|
function computeFlexCategoryTraits(index, ruler, options) {
|
|
var pixels = ruler.pixels;
|
|
var curr = pixels[index];
|
|
var prev = index > 0 ? pixels[index - 1] : null;
|
|
var next = index < pixels.length - 1 ? pixels[index + 1] : null;
|
|
var percent = options.categoryPercentage;
|
|
var start, size;
|
|
|
|
if (prev === null) {
|
|
// first data: its size is double based on the next point or,
|
|
// if it's also the last data, we use the scale size.
|
|
prev = curr - (next === null ? ruler.end - ruler.start : next - curr);
|
|
}
|
|
|
|
if (next === null) {
|
|
// last data: its size is also double based on the previous point.
|
|
next = curr + curr - prev;
|
|
}
|
|
|
|
start = curr - (curr - Math.min(prev, next)) / 2 * percent;
|
|
size = Math.abs(next - prev) / 2 * percent;
|
|
|
|
return {
|
|
chunk: size / ruler.stackCount,
|
|
ratio: options.barPercentage,
|
|
start: start
|
|
};
|
|
}
|
|
|
|
var controller_bar = core_datasetController.extend({
|
|
|
|
dataElementType: elements.Rectangle,
|
|
|
|
initialize: function() {
|
|
var me = this;
|
|
var meta;
|
|
|
|
core_datasetController.prototype.initialize.apply(me, arguments);
|
|
|
|
meta = me.getMeta();
|
|
meta.stack = me.getDataset().stack;
|
|
meta.bar = true;
|
|
},
|
|
|
|
update: function(reset) {
|
|
var me = this;
|
|
var rects = me.getMeta().data;
|
|
var i, ilen;
|
|
|
|
me._ruler = me.getRuler();
|
|
|
|
for (i = 0, ilen = rects.length; i < ilen; ++i) {
|
|
me.updateElement(rects[i], i, reset);
|
|
}
|
|
},
|
|
|
|
updateElement: function(rectangle, index, reset) {
|
|
var me = this;
|
|
var meta = me.getMeta();
|
|
var dataset = me.getDataset();
|
|
var options = me._resolveElementOptions(rectangle, index);
|
|
|
|
rectangle._xScale = me.getScaleForId(meta.xAxisID);
|
|
rectangle._yScale = me.getScaleForId(meta.yAxisID);
|
|
rectangle._datasetIndex = me.index;
|
|
rectangle._index = index;
|
|
rectangle._model = {
|
|
backgroundColor: options.backgroundColor,
|
|
borderColor: options.borderColor,
|
|
borderSkipped: options.borderSkipped,
|
|
borderWidth: options.borderWidth,
|
|
datasetLabel: dataset.label,
|
|
label: me.chart.data.labels[index]
|
|
};
|
|
|
|
me._updateElementGeometry(rectangle, index, reset);
|
|
|
|
rectangle.pivot();
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_updateElementGeometry: function(rectangle, index, reset) {
|
|
var me = this;
|
|
var model = rectangle._model;
|
|
var vscale = me._getValueScale();
|
|
var base = vscale.getBasePixel();
|
|
var horizontal = vscale.isHorizontal();
|
|
var ruler = me._ruler || me.getRuler();
|
|
var vpixels = me.calculateBarValuePixels(me.index, index);
|
|
var ipixels = me.calculateBarIndexPixels(me.index, index, ruler);
|
|
|
|
model.horizontal = horizontal;
|
|
model.base = reset ? base : vpixels.base;
|
|
model.x = horizontal ? reset ? base : vpixels.head : ipixels.center;
|
|
model.y = horizontal ? ipixels.center : reset ? base : vpixels.head;
|
|
model.height = horizontal ? ipixels.size : undefined;
|
|
model.width = horizontal ? undefined : ipixels.size;
|
|
},
|
|
|
|
/**
|
|
* Returns the stacks based on groups and bar visibility.
|
|
* @param {number} [last] - The dataset index
|
|
* @returns {string[]} The list of stack IDs
|
|
* @private
|
|
*/
|
|
_getStacks: function(last) {
|
|
var me = this;
|
|
var chart = me.chart;
|
|
var scale = me._getIndexScale();
|
|
var stacked = scale.options.stacked;
|
|
var ilen = last === undefined ? chart.data.datasets.length : last + 1;
|
|
var stacks = [];
|
|
var i, meta;
|
|
|
|
for (i = 0; i < ilen; ++i) {
|
|
meta = chart.getDatasetMeta(i);
|
|
if (meta.bar && chart.isDatasetVisible(i) &&
|
|
(stacked === false ||
|
|
(stacked === true && stacks.indexOf(meta.stack) === -1) ||
|
|
(stacked === undefined && (meta.stack === undefined || stacks.indexOf(meta.stack) === -1)))) {
|
|
stacks.push(meta.stack);
|
|
}
|
|
}
|
|
|
|
return stacks;
|
|
},
|
|
|
|
/**
|
|
* Returns the effective number of stacks based on groups and bar visibility.
|
|
* @private
|
|
*/
|
|
getStackCount: function() {
|
|
return this._getStacks().length;
|
|
},
|
|
|
|
/**
|
|
* Returns the stack index for the given dataset based on groups and bar visibility.
|
|
* @param {number} [datasetIndex] - The dataset index
|
|
* @param {string} [name] - The stack name to find
|
|
* @returns {number} The stack index
|
|
* @private
|
|
*/
|
|
getStackIndex: function(datasetIndex, name) {
|
|
var stacks = this._getStacks(datasetIndex);
|
|
var index = (name !== undefined)
|
|
? stacks.indexOf(name)
|
|
: -1; // indexOf returns -1 if element is not present
|
|
|
|
return (index === -1)
|
|
? stacks.length - 1
|
|
: index;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
getRuler: function() {
|
|
var me = this;
|
|
var scale = me._getIndexScale();
|
|
var stackCount = me.getStackCount();
|
|
var datasetIndex = me.index;
|
|
var isHorizontal = scale.isHorizontal();
|
|
var start = isHorizontal ? scale.left : scale.top;
|
|
var end = start + (isHorizontal ? scale.width : scale.height);
|
|
var pixels = [];
|
|
var i, ilen, min;
|
|
|
|
for (i = 0, ilen = me.getMeta().data.length; i < ilen; ++i) {
|
|
pixels.push(scale.getPixelForValue(null, i, datasetIndex));
|
|
}
|
|
|
|
min = helpers$1.isNullOrUndef(scale.options.barThickness)
|
|
? computeMinSampleSize(scale, pixels)
|
|
: -1;
|
|
|
|
return {
|
|
min: min,
|
|
pixels: pixels,
|
|
start: start,
|
|
end: end,
|
|
stackCount: stackCount,
|
|
scale: scale
|
|
};
|
|
},
|
|
|
|
/**
|
|
* Note: pixel values are not clamped to the scale area.
|
|
* @private
|
|
*/
|
|
calculateBarValuePixels: function(datasetIndex, index) {
|
|
var me = this;
|
|
var chart = me.chart;
|
|
var meta = me.getMeta();
|
|
var scale = me._getValueScale();
|
|
var isHorizontal = scale.isHorizontal();
|
|
var datasets = chart.data.datasets;
|
|
var value = +scale.getRightValue(datasets[datasetIndex].data[index]);
|
|
var minBarLength = scale.options.minBarLength;
|
|
var stacked = scale.options.stacked;
|
|
var stack = meta.stack;
|
|
var start = 0;
|
|
var i, imeta, ivalue, base, head, size;
|
|
|
|
if (stacked || (stacked === undefined && stack !== undefined)) {
|
|
for (i = 0; i < datasetIndex; ++i) {
|
|
imeta = chart.getDatasetMeta(i);
|
|
|
|
if (imeta.bar &&
|
|
imeta.stack === stack &&
|
|
imeta.controller._getValueScaleId() === scale.id &&
|
|
chart.isDatasetVisible(i)) {
|
|
|
|
ivalue = +scale.getRightValue(datasets[i].data[index]);
|
|
if ((value < 0 && ivalue < 0) || (value >= 0 && ivalue > 0)) {
|
|
start += ivalue;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
base = scale.getPixelForValue(start);
|
|
head = scale.getPixelForValue(start + value);
|
|
size = head - base;
|
|
|
|
if (minBarLength !== undefined && Math.abs(size) < minBarLength) {
|
|
size = minBarLength;
|
|
if (value >= 0 && !isHorizontal || value < 0 && isHorizontal) {
|
|
head = base - minBarLength;
|
|
} else {
|
|
head = base + minBarLength;
|
|
}
|
|
}
|
|
|
|
return {
|
|
size: size,
|
|
base: base,
|
|
head: head,
|
|
center: head + size / 2
|
|
};
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
calculateBarIndexPixels: function(datasetIndex, index, ruler) {
|
|
var me = this;
|
|
var options = ruler.scale.options;
|
|
var range = options.barThickness === 'flex'
|
|
? computeFlexCategoryTraits(index, ruler, options)
|
|
: computeFitCategoryTraits(index, ruler, options);
|
|
|
|
var stackIndex = me.getStackIndex(datasetIndex, me.getMeta().stack);
|
|
var center = range.start + (range.chunk * stackIndex) + (range.chunk / 2);
|
|
var size = Math.min(
|
|
helpers$1.valueOrDefault(options.maxBarThickness, Infinity),
|
|
range.chunk * range.ratio);
|
|
|
|
return {
|
|
base: center - size / 2,
|
|
head: center + size / 2,
|
|
center: center,
|
|
size: size
|
|
};
|
|
},
|
|
|
|
draw: function() {
|
|
var me = this;
|
|
var chart = me.chart;
|
|
var scale = me._getValueScale();
|
|
var rects = me.getMeta().data;
|
|
var dataset = me.getDataset();
|
|
var ilen = rects.length;
|
|
var i = 0;
|
|
|
|
helpers$1.canvas.clipArea(chart.ctx, chart.chartArea);
|
|
|
|
for (; i < ilen; ++i) {
|
|
if (!isNaN(scale.getRightValue(dataset.data[i]))) {
|
|
rects[i].draw();
|
|
}
|
|
}
|
|
|
|
helpers$1.canvas.unclipArea(chart.ctx);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_resolveElementOptions: function(rectangle, index) {
|
|
var me = this;
|
|
var chart = me.chart;
|
|
var datasets = chart.data.datasets;
|
|
var dataset = datasets[me.index];
|
|
var custom = rectangle.custom || {};
|
|
var options = chart.options.elements.rectangle;
|
|
var values = {};
|
|
var i, ilen, key;
|
|
|
|
// Scriptable options
|
|
var context = {
|
|
chart: chart,
|
|
dataIndex: index,
|
|
dataset: dataset,
|
|
datasetIndex: me.index
|
|
};
|
|
|
|
var keys = [
|
|
'backgroundColor',
|
|
'borderColor',
|
|
'borderSkipped',
|
|
'borderWidth'
|
|
];
|
|
|
|
for (i = 0, ilen = keys.length; i < ilen; ++i) {
|
|
key = keys[i];
|
|
values[key] = resolve$1([
|
|
custom[key],
|
|
dataset[key],
|
|
options[key]
|
|
], context, index);
|
|
}
|
|
|
|
return values;
|
|
}
|
|
});
|
|
|
|
var valueOrDefault$3 = helpers$1.valueOrDefault;
|
|
var resolve$2 = helpers$1.options.resolve;
|
|
|
|
core_defaults._set('bubble', {
|
|
hover: {
|
|
mode: 'single'
|
|
},
|
|
|
|
scales: {
|
|
xAxes: [{
|
|
type: 'linear', // bubble should probably use a linear scale by default
|
|
position: 'bottom',
|
|
id: 'x-axis-0' // need an ID so datasets can reference the scale
|
|
}],
|
|
yAxes: [{
|
|
type: 'linear',
|
|
position: 'left',
|
|
id: 'y-axis-0'
|
|
}]
|
|
},
|
|
|
|
tooltips: {
|
|
callbacks: {
|
|
title: function() {
|
|
// Title doesn't make sense for scatter since we format the data as a point
|
|
return '';
|
|
},
|
|
label: function(item, data) {
|
|
var datasetLabel = data.datasets[item.datasetIndex].label || '';
|
|
var dataPoint = data.datasets[item.datasetIndex].data[item.index];
|
|
return datasetLabel + ': (' + item.xLabel + ', ' + item.yLabel + ', ' + dataPoint.r + ')';
|
|
}
|
|
}
|
|
}
|
|
});
|
|
|
|
var controller_bubble = core_datasetController.extend({
|
|
/**
|
|
* @protected
|
|
*/
|
|
dataElementType: elements.Point,
|
|
|
|
/**
|
|
* @protected
|
|
*/
|
|
update: function(reset) {
|
|
var me = this;
|
|
var meta = me.getMeta();
|
|
var points = meta.data;
|
|
|
|
// Update Points
|
|
helpers$1.each(points, function(point, index) {
|
|
me.updateElement(point, index, reset);
|
|
});
|
|
},
|
|
|
|
/**
|
|
* @protected
|
|
*/
|
|
updateElement: function(point, index, reset) {
|
|
var me = this;
|
|
var meta = me.getMeta();
|
|
var custom = point.custom || {};
|
|
var xScale = me.getScaleForId(meta.xAxisID);
|
|
var yScale = me.getScaleForId(meta.yAxisID);
|
|
var options = me._resolveElementOptions(point, index);
|
|
var data = me.getDataset().data[index];
|
|
var dsIndex = me.index;
|
|
|
|
var x = reset ? xScale.getPixelForDecimal(0.5) : xScale.getPixelForValue(typeof data === 'object' ? data : NaN, index, dsIndex);
|
|
var y = reset ? yScale.getBasePixel() : yScale.getPixelForValue(data, index, dsIndex);
|
|
|
|
point._xScale = xScale;
|
|
point._yScale = yScale;
|
|
point._options = options;
|
|
point._datasetIndex = dsIndex;
|
|
point._index = index;
|
|
point._model = {
|
|
backgroundColor: options.backgroundColor,
|
|
borderColor: options.borderColor,
|
|
borderWidth: options.borderWidth,
|
|
hitRadius: options.hitRadius,
|
|
pointStyle: options.pointStyle,
|
|
rotation: options.rotation,
|
|
radius: reset ? 0 : options.radius,
|
|
skip: custom.skip || isNaN(x) || isNaN(y),
|
|
x: x,
|
|
y: y,
|
|
};
|
|
|
|
point.pivot();
|
|
},
|
|
|
|
/**
|
|
* @protected
|
|
*/
|
|
setHoverStyle: function(point) {
|
|
var model = point._model;
|
|
var options = point._options;
|
|
var getHoverColor = helpers$1.getHoverColor;
|
|
|
|
point.$previousStyle = {
|
|
backgroundColor: model.backgroundColor,
|
|
borderColor: model.borderColor,
|
|
borderWidth: model.borderWidth,
|
|
radius: model.radius
|
|
};
|
|
|
|
model.backgroundColor = valueOrDefault$3(options.hoverBackgroundColor, getHoverColor(options.backgroundColor));
|
|
model.borderColor = valueOrDefault$3(options.hoverBorderColor, getHoverColor(options.borderColor));
|
|
model.borderWidth = valueOrDefault$3(options.hoverBorderWidth, options.borderWidth);
|
|
model.radius = options.radius + options.hoverRadius;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_resolveElementOptions: function(point, index) {
|
|
var me = this;
|
|
var chart = me.chart;
|
|
var datasets = chart.data.datasets;
|
|
var dataset = datasets[me.index];
|
|
var custom = point.custom || {};
|
|
var options = chart.options.elements.point;
|
|
var data = dataset.data[index];
|
|
var values = {};
|
|
var i, ilen, key;
|
|
|
|
// Scriptable options
|
|
var context = {
|
|
chart: chart,
|
|
dataIndex: index,
|
|
dataset: dataset,
|
|
datasetIndex: me.index
|
|
};
|
|
|
|
var keys = [
|
|
'backgroundColor',
|
|
'borderColor',
|
|
'borderWidth',
|
|
'hoverBackgroundColor',
|
|
'hoverBorderColor',
|
|
'hoverBorderWidth',
|
|
'hoverRadius',
|
|
'hitRadius',
|
|
'pointStyle',
|
|
'rotation'
|
|
];
|
|
|
|
for (i = 0, ilen = keys.length; i < ilen; ++i) {
|
|
key = keys[i];
|
|
values[key] = resolve$2([
|
|
custom[key],
|
|
dataset[key],
|
|
options[key]
|
|
], context, index);
|
|
}
|
|
|
|
// Custom radius resolution
|
|
values.radius = resolve$2([
|
|
custom.radius,
|
|
data ? data.r : undefined,
|
|
dataset.radius,
|
|
options.radius
|
|
], context, index);
|
|
|
|
return values;
|
|
}
|
|
});
|
|
|
|
var resolve$3 = helpers$1.options.resolve;
|
|
var valueOrDefault$4 = helpers$1.valueOrDefault;
|
|
|
|
core_defaults._set('doughnut', {
|
|
animation: {
|
|
// Boolean - Whether we animate the rotation of the Doughnut
|
|
animateRotate: true,
|
|
// Boolean - Whether we animate scaling the Doughnut from the centre
|
|
animateScale: false
|
|
},
|
|
hover: {
|
|
mode: 'single'
|
|
},
|
|
legendCallback: function(chart) {
|
|
var text = [];
|
|
text.push('<ul class="' + chart.id + '-legend">');
|
|
|
|
var data = chart.data;
|
|
var datasets = data.datasets;
|
|
var labels = data.labels;
|
|
|
|
if (datasets.length) {
|
|
for (var i = 0; i < datasets[0].data.length; ++i) {
|
|
text.push('<li><span style="background-color:' + datasets[0].backgroundColor[i] + '"></span>');
|
|
if (labels[i]) {
|
|
text.push(labels[i]);
|
|
}
|
|
text.push('</li>');
|
|
}
|
|
}
|
|
|
|
text.push('</ul>');
|
|
return text.join('');
|
|
},
|
|
legend: {
|
|
labels: {
|
|
generateLabels: function(chart) {
|
|
var data = chart.data;
|
|
if (data.labels.length && data.datasets.length) {
|
|
return data.labels.map(function(label, i) {
|
|
var meta = chart.getDatasetMeta(0);
|
|
var ds = data.datasets[0];
|
|
var arc = meta.data[i];
|
|
var custom = arc && arc.custom || {};
|
|
var arcOpts = chart.options.elements.arc;
|
|
var fill = resolve$3([custom.backgroundColor, ds.backgroundColor, arcOpts.backgroundColor], undefined, i);
|
|
var stroke = resolve$3([custom.borderColor, ds.borderColor, arcOpts.borderColor], undefined, i);
|
|
var bw = resolve$3([custom.borderWidth, ds.borderWidth, arcOpts.borderWidth], undefined, i);
|
|
|
|
return {
|
|
text: label,
|
|
fillStyle: fill,
|
|
strokeStyle: stroke,
|
|
lineWidth: bw,
|
|
hidden: isNaN(ds.data[i]) || meta.data[i].hidden,
|
|
|
|
// Extra data used for toggling the correct item
|
|
index: i
|
|
};
|
|
});
|
|
}
|
|
return [];
|
|
}
|
|
},
|
|
|
|
onClick: function(e, legendItem) {
|
|
var index = legendItem.index;
|
|
var chart = this.chart;
|
|
var i, ilen, meta;
|
|
|
|
for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) {
|
|
meta = chart.getDatasetMeta(i);
|
|
// toggle visibility of index if exists
|
|
if (meta.data[index]) {
|
|
meta.data[index].hidden = !meta.data[index].hidden;
|
|
}
|
|
}
|
|
|
|
chart.update();
|
|
}
|
|
},
|
|
|
|
// The percentage of the chart that we cut out of the middle.
|
|
cutoutPercentage: 50,
|
|
|
|
// The rotation of the chart, where the first data arc begins.
|
|
rotation: Math.PI * -0.5,
|
|
|
|
// The total circumference of the chart.
|
|
circumference: Math.PI * 2.0,
|
|
|
|
// Need to override these to give a nice default
|
|
tooltips: {
|
|
callbacks: {
|
|
title: function() {
|
|
return '';
|
|
},
|
|
label: function(tooltipItem, data) {
|
|
var dataLabel = data.labels[tooltipItem.index];
|
|
var value = ': ' + data.datasets[tooltipItem.datasetIndex].data[tooltipItem.index];
|
|
|
|
if (helpers$1.isArray(dataLabel)) {
|
|
// show value on first line of multiline label
|
|
// need to clone because we are changing the value
|
|
dataLabel = dataLabel.slice();
|
|
dataLabel[0] += value;
|
|
} else {
|
|
dataLabel += value;
|
|
}
|
|
|
|
return dataLabel;
|
|
}
|
|
}
|
|
}
|
|
});
|
|
|
|
var controller_doughnut = core_datasetController.extend({
|
|
|
|
dataElementType: elements.Arc,
|
|
|
|
linkScales: helpers$1.noop,
|
|
|
|
// Get index of the dataset in relation to the visible datasets. This allows determining the inner and outer radius correctly
|
|
getRingIndex: function(datasetIndex) {
|
|
var ringIndex = 0;
|
|
|
|
for (var j = 0; j < datasetIndex; ++j) {
|
|
if (this.chart.isDatasetVisible(j)) {
|
|
++ringIndex;
|
|
}
|
|
}
|
|
|
|
return ringIndex;
|
|
},
|
|
|
|
update: function(reset) {
|
|
var me = this;
|
|
var chart = me.chart;
|
|
var chartArea = chart.chartArea;
|
|
var opts = chart.options;
|
|
var availableWidth = chartArea.right - chartArea.left;
|
|
var availableHeight = chartArea.bottom - chartArea.top;
|
|
var minSize = Math.min(availableWidth, availableHeight);
|
|
var offset = {x: 0, y: 0};
|
|
var meta = me.getMeta();
|
|
var arcs = meta.data;
|
|
var cutoutPercentage = opts.cutoutPercentage;
|
|
var circumference = opts.circumference;
|
|
var chartWeight = me._getRingWeight(me.index);
|
|
var i, ilen;
|
|
|
|
// If the chart's circumference isn't a full circle, calculate minSize as a ratio of the width/height of the arc
|
|
if (circumference < Math.PI * 2.0) {
|
|
var startAngle = opts.rotation % (Math.PI * 2.0);
|
|
startAngle += Math.PI * 2.0 * (startAngle >= Math.PI ? -1 : startAngle < -Math.PI ? 1 : 0);
|
|
var endAngle = startAngle + circumference;
|
|
var start = {x: Math.cos(startAngle), y: Math.sin(startAngle)};
|
|
var end = {x: Math.cos(endAngle), y: Math.sin(endAngle)};
|
|
var contains0 = (startAngle <= 0 && endAngle >= 0) || (startAngle <= Math.PI * 2.0 && Math.PI * 2.0 <= endAngle);
|
|
var contains90 = (startAngle <= Math.PI * 0.5 && Math.PI * 0.5 <= endAngle) || (startAngle <= Math.PI * 2.5 && Math.PI * 2.5 <= endAngle);
|
|
var contains180 = (startAngle <= -Math.PI && -Math.PI <= endAngle) || (startAngle <= Math.PI && Math.PI <= endAngle);
|
|
var contains270 = (startAngle <= -Math.PI * 0.5 && -Math.PI * 0.5 <= endAngle) || (startAngle <= Math.PI * 1.5 && Math.PI * 1.5 <= endAngle);
|
|
var cutout = cutoutPercentage / 100.0;
|
|
var min = {x: contains180 ? -1 : Math.min(start.x * (start.x < 0 ? 1 : cutout), end.x * (end.x < 0 ? 1 : cutout)), y: contains270 ? -1 : Math.min(start.y * (start.y < 0 ? 1 : cutout), end.y * (end.y < 0 ? 1 : cutout))};
|
|
var max = {x: contains0 ? 1 : Math.max(start.x * (start.x > 0 ? 1 : cutout), end.x * (end.x > 0 ? 1 : cutout)), y: contains90 ? 1 : Math.max(start.y * (start.y > 0 ? 1 : cutout), end.y * (end.y > 0 ? 1 : cutout))};
|
|
var size = {width: (max.x - min.x) * 0.5, height: (max.y - min.y) * 0.5};
|
|
minSize = Math.min(availableWidth / size.width, availableHeight / size.height);
|
|
offset = {x: (max.x + min.x) * -0.5, y: (max.y + min.y) * -0.5};
|
|
}
|
|
|
|
for (i = 0, ilen = arcs.length; i < ilen; ++i) {
|
|
arcs[i]._options = me._resolveElementOptions(arcs[i], i);
|
|
}
|
|
|
|
chart.borderWidth = me.getMaxBorderWidth();
|
|
chart.outerRadius = Math.max((minSize - chart.borderWidth) / 2, 0);
|
|
chart.innerRadius = Math.max(cutoutPercentage ? (chart.outerRadius / 100) * (cutoutPercentage) : 0, 0);
|
|
chart.radiusLength = (chart.outerRadius - chart.innerRadius) / (me._getVisibleDatasetWeightTotal() || 1);
|
|
chart.offsetX = offset.x * chart.outerRadius;
|
|
chart.offsetY = offset.y * chart.outerRadius;
|
|
|
|
meta.total = me.calculateTotal();
|
|
|
|
me.outerRadius = chart.outerRadius - chart.radiusLength * me._getRingWeightOffset(me.index);
|
|
me.innerRadius = Math.max(me.outerRadius - chart.radiusLength * chartWeight, 0);
|
|
|
|
for (i = 0, ilen = arcs.length; i < ilen; ++i) {
|
|
me.updateElement(arcs[i], i, reset);
|
|
}
|
|
},
|
|
|
|
updateElement: function(arc, index, reset) {
|
|
var me = this;
|
|
var chart = me.chart;
|
|
var chartArea = chart.chartArea;
|
|
var opts = chart.options;
|
|
var animationOpts = opts.animation;
|
|
var centerX = (chartArea.left + chartArea.right) / 2;
|
|
var centerY = (chartArea.top + chartArea.bottom) / 2;
|
|
var startAngle = opts.rotation; // non reset case handled later
|
|
var endAngle = opts.rotation; // non reset case handled later
|
|
var dataset = me.getDataset();
|
|
var circumference = reset && animationOpts.animateRotate ? 0 : arc.hidden ? 0 : me.calculateCircumference(dataset.data[index]) * (opts.circumference / (2.0 * Math.PI));
|
|
var innerRadius = reset && animationOpts.animateScale ? 0 : me.innerRadius;
|
|
var outerRadius = reset && animationOpts.animateScale ? 0 : me.outerRadius;
|
|
var options = arc._options || {};
|
|
|
|
helpers$1.extend(arc, {
|
|
// Utility
|
|
_datasetIndex: me.index,
|
|
_index: index,
|
|
|
|
// Desired view properties
|
|
_model: {
|
|
backgroundColor: options.backgroundColor,
|
|
borderColor: options.borderColor,
|
|
borderWidth: options.borderWidth,
|
|
borderAlign: options.borderAlign,
|
|
x: centerX + chart.offsetX,
|
|
y: centerY + chart.offsetY,
|
|
startAngle: startAngle,
|
|
endAngle: endAngle,
|
|
circumference: circumference,
|
|
outerRadius: outerRadius,
|
|
innerRadius: innerRadius,
|
|
label: helpers$1.valueAtIndexOrDefault(dataset.label, index, chart.data.labels[index])
|
|
}
|
|
});
|
|
|
|
var model = arc._model;
|
|
|
|
// Set correct angles if not resetting
|
|
if (!reset || !animationOpts.animateRotate) {
|
|
if (index === 0) {
|
|
model.startAngle = opts.rotation;
|
|
} else {
|
|
model.startAngle = me.getMeta().data[index - 1]._model.endAngle;
|
|
}
|
|
|
|
model.endAngle = model.startAngle + model.circumference;
|
|
}
|
|
|
|
arc.pivot();
|
|
},
|
|
|
|
calculateTotal: function() {
|
|
var dataset = this.getDataset();
|
|
var meta = this.getMeta();
|
|
var total = 0;
|
|
var value;
|
|
|
|
helpers$1.each(meta.data, function(element, index) {
|
|
value = dataset.data[index];
|
|
if (!isNaN(value) && !element.hidden) {
|
|
total += Math.abs(value);
|
|
}
|
|
});
|
|
|
|
/* if (total === 0) {
|
|
total = NaN;
|
|
}*/
|
|
|
|
return total;
|
|
},
|
|
|
|
calculateCircumference: function(value) {
|
|
var total = this.getMeta().total;
|
|
if (total > 0 && !isNaN(value)) {
|
|
return (Math.PI * 2.0) * (Math.abs(value) / total);
|
|
}
|
|
return 0;
|
|
},
|
|
|
|
// gets the max border or hover width to properly scale pie charts
|
|
getMaxBorderWidth: function(arcs) {
|
|
var me = this;
|
|
var max = 0;
|
|
var chart = me.chart;
|
|
var i, ilen, meta, arc, controller, options, borderWidth, hoverWidth;
|
|
|
|
if (!arcs) {
|
|
// Find the outmost visible dataset
|
|
for (i = 0, ilen = chart.data.datasets.length; i < ilen; ++i) {
|
|
if (chart.isDatasetVisible(i)) {
|
|
meta = chart.getDatasetMeta(i);
|
|
arcs = meta.data;
|
|
if (i !== me.index) {
|
|
controller = meta.controller;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!arcs) {
|
|
return 0;
|
|
}
|
|
|
|
for (i = 0, ilen = arcs.length; i < ilen; ++i) {
|
|
arc = arcs[i];
|
|
options = controller ? controller._resolveElementOptions(arc, i) : arc._options;
|
|
if (options.borderAlign !== 'inner') {
|
|
borderWidth = options.borderWidth;
|
|
hoverWidth = options.hoverBorderWidth;
|
|
|
|
max = borderWidth > max ? borderWidth : max;
|
|
max = hoverWidth > max ? hoverWidth : max;
|
|
}
|
|
}
|
|
return max;
|
|
},
|
|
|
|
/**
|
|
* @protected
|
|
*/
|
|
setHoverStyle: function(arc) {
|
|
var model = arc._model;
|
|
var options = arc._options;
|
|
var getHoverColor = helpers$1.getHoverColor;
|
|
|
|
arc.$previousStyle = {
|
|
backgroundColor: model.backgroundColor,
|
|
borderColor: model.borderColor,
|
|
borderWidth: model.borderWidth,
|
|
};
|
|
|
|
model.backgroundColor = valueOrDefault$4(options.hoverBackgroundColor, getHoverColor(options.backgroundColor));
|
|
model.borderColor = valueOrDefault$4(options.hoverBorderColor, getHoverColor(options.borderColor));
|
|
model.borderWidth = valueOrDefault$4(options.hoverBorderWidth, options.borderWidth);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_resolveElementOptions: function(arc, index) {
|
|
var me = this;
|
|
var chart = me.chart;
|
|
var dataset = me.getDataset();
|
|
var custom = arc.custom || {};
|
|
var options = chart.options.elements.arc;
|
|
var values = {};
|
|
var i, ilen, key;
|
|
|
|
// Scriptable options
|
|
var context = {
|
|
chart: chart,
|
|
dataIndex: index,
|
|
dataset: dataset,
|
|
datasetIndex: me.index
|
|
};
|
|
|
|
var keys = [
|
|
'backgroundColor',
|
|
'borderColor',
|
|
'borderWidth',
|
|
'borderAlign',
|
|
'hoverBackgroundColor',
|
|
'hoverBorderColor',
|
|
'hoverBorderWidth',
|
|
];
|
|
|
|
for (i = 0, ilen = keys.length; i < ilen; ++i) {
|
|
key = keys[i];
|
|
values[key] = resolve$3([
|
|
custom[key],
|
|
dataset[key],
|
|
options[key]
|
|
], context, index);
|
|
}
|
|
|
|
return values;
|
|
},
|
|
|
|
/**
|
|
* Get radius length offset of the dataset in relation to the visible datasets weights. This allows determining the inner and outer radius correctly
|
|
* @private
|
|
*/
|
|
_getRingWeightOffset: function(datasetIndex) {
|
|
var ringWeightOffset = 0;
|
|
|
|
for (var i = 0; i < datasetIndex; ++i) {
|
|
if (this.chart.isDatasetVisible(i)) {
|
|
ringWeightOffset += this._getRingWeight(i);
|
|
}
|
|
}
|
|
|
|
return ringWeightOffset;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_getRingWeight: function(dataSetIndex) {
|
|
return Math.max(valueOrDefault$4(this.chart.data.datasets[dataSetIndex].weight, 1), 0);
|
|
},
|
|
|
|
/**
|
|
* Returns the sum of all visibile data set weights. This value can be 0.
|
|
* @private
|
|
*/
|
|
_getVisibleDatasetWeightTotal: function() {
|
|
return this._getRingWeightOffset(this.chart.data.datasets.length);
|
|
}
|
|
});
|
|
|
|
core_defaults._set('horizontalBar', {
|
|
hover: {
|
|
mode: 'index',
|
|
axis: 'y'
|
|
},
|
|
|
|
scales: {
|
|
xAxes: [{
|
|
type: 'linear',
|
|
position: 'bottom'
|
|
}],
|
|
|
|
yAxes: [{
|
|
type: 'category',
|
|
position: 'left',
|
|
categoryPercentage: 0.8,
|
|
barPercentage: 0.9,
|
|
offset: true,
|
|
gridLines: {
|
|
offsetGridLines: true
|
|
}
|
|
}]
|
|
},
|
|
|
|
elements: {
|
|
rectangle: {
|
|
borderSkipped: 'left'
|
|
}
|
|
},
|
|
|
|
tooltips: {
|
|
mode: 'index',
|
|
axis: 'y'
|
|
}
|
|
});
|
|
|
|
var controller_horizontalBar = controller_bar.extend({
|
|
/**
|
|
* @private
|
|
*/
|
|
_getValueScaleId: function() {
|
|
return this.getMeta().xAxisID;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_getIndexScaleId: function() {
|
|
return this.getMeta().yAxisID;
|
|
}
|
|
});
|
|
|
|
var valueOrDefault$5 = helpers$1.valueOrDefault;
|
|
var resolve$4 = helpers$1.options.resolve;
|
|
var isPointInArea = helpers$1.canvas._isPointInArea;
|
|
|
|
core_defaults._set('line', {
|
|
showLines: true,
|
|
spanGaps: false,
|
|
|
|
hover: {
|
|
mode: 'label'
|
|
},
|
|
|
|
scales: {
|
|
xAxes: [{
|
|
type: 'category',
|
|
id: 'x-axis-0'
|
|
}],
|
|
yAxes: [{
|
|
type: 'linear',
|
|
id: 'y-axis-0'
|
|
}]
|
|
}
|
|
});
|
|
|
|
function lineEnabled(dataset, options) {
|
|
return valueOrDefault$5(dataset.showLine, options.showLines);
|
|
}
|
|
|
|
var controller_line = core_datasetController.extend({
|
|
|
|
datasetElementType: elements.Line,
|
|
|
|
dataElementType: elements.Point,
|
|
|
|
update: function(reset) {
|
|
var me = this;
|
|
var meta = me.getMeta();
|
|
var line = meta.dataset;
|
|
var points = meta.data || [];
|
|
var scale = me.getScaleForId(meta.yAxisID);
|
|
var dataset = me.getDataset();
|
|
var showLine = lineEnabled(dataset, me.chart.options);
|
|
var i, ilen;
|
|
|
|
// Update Line
|
|
if (showLine) {
|
|
// Compatibility: If the properties are defined with only the old name, use those values
|
|
if ((dataset.tension !== undefined) && (dataset.lineTension === undefined)) {
|
|
dataset.lineTension = dataset.tension;
|
|
}
|
|
|
|
// Utility
|
|
line._scale = scale;
|
|
line._datasetIndex = me.index;
|
|
// Data
|
|
line._children = points;
|
|
// Model
|
|
line._model = me._resolveLineOptions(line);
|
|
|
|
line.pivot();
|
|
}
|
|
|
|
// Update Points
|
|
for (i = 0, ilen = points.length; i < ilen; ++i) {
|
|
me.updateElement(points[i], i, reset);
|
|
}
|
|
|
|
if (showLine && line._model.tension !== 0) {
|
|
me.updateBezierControlPoints();
|
|
}
|
|
|
|
// Now pivot the point for animation
|
|
for (i = 0, ilen = points.length; i < ilen; ++i) {
|
|
points[i].pivot();
|
|
}
|
|
},
|
|
|
|
updateElement: function(point, index, reset) {
|
|
var me = this;
|
|
var meta = me.getMeta();
|
|
var custom = point.custom || {};
|
|
var dataset = me.getDataset();
|
|
var datasetIndex = me.index;
|
|
var value = dataset.data[index];
|
|
var yScale = me.getScaleForId(meta.yAxisID);
|
|
var xScale = me.getScaleForId(meta.xAxisID);
|
|
var lineModel = meta.dataset._model;
|
|
var x, y;
|
|
|
|
var options = me._resolvePointOptions(point, index);
|
|
|
|
x = xScale.getPixelForValue(typeof value === 'object' ? value : NaN, index, datasetIndex);
|
|
y = reset ? yScale.getBasePixel() : me.calculatePointY(value, index, datasetIndex);
|
|
|
|
// Utility
|
|
point._xScale = xScale;
|
|
point._yScale = yScale;
|
|
point._options = options;
|
|
point._datasetIndex = datasetIndex;
|
|
point._index = index;
|
|
|
|
// Desired view properties
|
|
point._model = {
|
|
x: x,
|
|
y: y,
|
|
skip: custom.skip || isNaN(x) || isNaN(y),
|
|
// Appearance
|
|
radius: options.radius,
|
|
pointStyle: options.pointStyle,
|
|
rotation: options.rotation,
|
|
backgroundColor: options.backgroundColor,
|
|
borderColor: options.borderColor,
|
|
borderWidth: options.borderWidth,
|
|
tension: valueOrDefault$5(custom.tension, lineModel ? lineModel.tension : 0),
|
|
steppedLine: lineModel ? lineModel.steppedLine : false,
|
|
// Tooltip
|
|
hitRadius: options.hitRadius
|
|
};
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_resolvePointOptions: function(element, index) {
|
|
var me = this;
|
|
var chart = me.chart;
|
|
var dataset = chart.data.datasets[me.index];
|
|
var custom = element.custom || {};
|
|
var options = chart.options.elements.point;
|
|
var values = {};
|
|
var i, ilen, key;
|
|
|
|
// Scriptable options
|
|
var context = {
|
|
chart: chart,
|
|
dataIndex: index,
|
|
dataset: dataset,
|
|
datasetIndex: me.index
|
|
};
|
|
|
|
var ELEMENT_OPTIONS = {
|
|
backgroundColor: 'pointBackgroundColor',
|
|
borderColor: 'pointBorderColor',
|
|
borderWidth: 'pointBorderWidth',
|
|
hitRadius: 'pointHitRadius',
|
|
hoverBackgroundColor: 'pointHoverBackgroundColor',
|
|
hoverBorderColor: 'pointHoverBorderColor',
|
|
hoverBorderWidth: 'pointHoverBorderWidth',
|
|
hoverRadius: 'pointHoverRadius',
|
|
pointStyle: 'pointStyle',
|
|
radius: 'pointRadius',
|
|
rotation: 'pointRotation'
|
|
};
|
|
var keys = Object.keys(ELEMENT_OPTIONS);
|
|
|
|
for (i = 0, ilen = keys.length; i < ilen; ++i) {
|
|
key = keys[i];
|
|
values[key] = resolve$4([
|
|
custom[key],
|
|
dataset[ELEMENT_OPTIONS[key]],
|
|
dataset[key],
|
|
options[key]
|
|
], context, index);
|
|
}
|
|
|
|
return values;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_resolveLineOptions: function(element) {
|
|
var me = this;
|
|
var chart = me.chart;
|
|
var dataset = chart.data.datasets[me.index];
|
|
var custom = element.custom || {};
|
|
var options = chart.options;
|
|
var elementOptions = options.elements.line;
|
|
var values = {};
|
|
var i, ilen, key;
|
|
|
|
var keys = [
|
|
'backgroundColor',
|
|
'borderWidth',
|
|
'borderColor',
|
|
'borderCapStyle',
|
|
'borderDash',
|
|
'borderDashOffset',
|
|
'borderJoinStyle',
|
|
'fill',
|
|
'cubicInterpolationMode'
|
|
];
|
|
|
|
for (i = 0, ilen = keys.length; i < ilen; ++i) {
|
|
key = keys[i];
|
|
values[key] = resolve$4([
|
|
custom[key],
|
|
dataset[key],
|
|
elementOptions[key]
|
|
]);
|
|
}
|
|
|
|
// The default behavior of lines is to break at null values, according
|
|
// to https://github.com/chartjs/Chart.js/issues/2435#issuecomment-216718158
|
|
// This option gives lines the ability to span gaps
|
|
values.spanGaps = valueOrDefault$5(dataset.spanGaps, options.spanGaps);
|
|
values.tension = valueOrDefault$5(dataset.lineTension, elementOptions.tension);
|
|
values.steppedLine = resolve$4([custom.steppedLine, dataset.steppedLine, elementOptions.stepped]);
|
|
|
|
return values;
|
|
},
|
|
|
|
calculatePointY: function(value, index, datasetIndex) {
|
|
var me = this;
|
|
var chart = me.chart;
|
|
var meta = me.getMeta();
|
|
var yScale = me.getScaleForId(meta.yAxisID);
|
|
var sumPos = 0;
|
|
var sumNeg = 0;
|
|
var i, ds, dsMeta;
|
|
|
|
if (yScale.options.stacked) {
|
|
for (i = 0; i < datasetIndex; i++) {
|
|
ds = chart.data.datasets[i];
|
|
dsMeta = chart.getDatasetMeta(i);
|
|
if (dsMeta.type === 'line' && dsMeta.yAxisID === yScale.id && chart.isDatasetVisible(i)) {
|
|
var stackedRightValue = Number(yScale.getRightValue(ds.data[index]));
|
|
if (stackedRightValue < 0) {
|
|
sumNeg += stackedRightValue || 0;
|
|
} else {
|
|
sumPos += stackedRightValue || 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
var rightValue = Number(yScale.getRightValue(value));
|
|
if (rightValue < 0) {
|
|
return yScale.getPixelForValue(sumNeg + rightValue);
|
|
}
|
|
return yScale.getPixelForValue(sumPos + rightValue);
|
|
}
|
|
|
|
return yScale.getPixelForValue(value);
|
|
},
|
|
|
|
updateBezierControlPoints: function() {
|
|
var me = this;
|
|
var chart = me.chart;
|
|
var meta = me.getMeta();
|
|
var lineModel = meta.dataset._model;
|
|
var area = chart.chartArea;
|
|
var points = meta.data || [];
|
|
var i, ilen, model, controlPoints;
|
|
|
|
// Only consider points that are drawn in case the spanGaps option is used
|
|
if (lineModel.spanGaps) {
|
|
points = points.filter(function(pt) {
|
|
return !pt._model.skip;
|
|
});
|
|
}
|
|
|
|
function capControlPoint(pt, min, max) {
|
|
return Math.max(Math.min(pt, max), min);
|
|
}
|
|
|
|
if (lineModel.cubicInterpolationMode === 'monotone') {
|
|
helpers$1.splineCurveMonotone(points);
|
|
} else {
|
|
for (i = 0, ilen = points.length; i < ilen; ++i) {
|
|
model = points[i]._model;
|
|
controlPoints = helpers$1.splineCurve(
|
|
helpers$1.previousItem(points, i)._model,
|
|
model,
|
|
helpers$1.nextItem(points, i)._model,
|
|
lineModel.tension
|
|
);
|
|
model.controlPointPreviousX = controlPoints.previous.x;
|
|
model.controlPointPreviousY = controlPoints.previous.y;
|
|
model.controlPointNextX = controlPoints.next.x;
|
|
model.controlPointNextY = controlPoints.next.y;
|
|
}
|
|
}
|
|
|
|
if (chart.options.elements.line.capBezierPoints) {
|
|
for (i = 0, ilen = points.length; i < ilen; ++i) {
|
|
model = points[i]._model;
|
|
if (isPointInArea(model, area)) {
|
|
if (i > 0 && isPointInArea(points[i - 1]._model, area)) {
|
|
model.controlPointPreviousX = capControlPoint(model.controlPointPreviousX, area.left, area.right);
|
|
model.controlPointPreviousY = capControlPoint(model.controlPointPreviousY, area.top, area.bottom);
|
|
}
|
|
if (i < points.length - 1 && isPointInArea(points[i + 1]._model, area)) {
|
|
model.controlPointNextX = capControlPoint(model.controlPointNextX, area.left, area.right);
|
|
model.controlPointNextY = capControlPoint(model.controlPointNextY, area.top, area.bottom);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
},
|
|
|
|
draw: function() {
|
|
var me = this;
|
|
var chart = me.chart;
|
|
var meta = me.getMeta();
|
|
var points = meta.data || [];
|
|
var area = chart.chartArea;
|
|
var ilen = points.length;
|
|
var halfBorderWidth;
|
|
var i = 0;
|
|
|
|
if (lineEnabled(me.getDataset(), chart.options)) {
|
|
halfBorderWidth = (meta.dataset._model.borderWidth || 0) / 2;
|
|
|
|
helpers$1.canvas.clipArea(chart.ctx, {
|
|
left: area.left,
|
|
right: area.right,
|
|
top: area.top - halfBorderWidth,
|
|
bottom: area.bottom + halfBorderWidth
|
|
});
|
|
|
|
meta.dataset.draw();
|
|
|
|
helpers$1.canvas.unclipArea(chart.ctx);
|
|
}
|
|
|
|
// Draw the points
|
|
for (; i < ilen; ++i) {
|
|
points[i].draw(area);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @protected
|
|
*/
|
|
setHoverStyle: function(point) {
|
|
var model = point._model;
|
|
var options = point._options;
|
|
var getHoverColor = helpers$1.getHoverColor;
|
|
|
|
point.$previousStyle = {
|
|
backgroundColor: model.backgroundColor,
|
|
borderColor: model.borderColor,
|
|
borderWidth: model.borderWidth,
|
|
radius: model.radius
|
|
};
|
|
|
|
model.backgroundColor = valueOrDefault$5(options.hoverBackgroundColor, getHoverColor(options.backgroundColor));
|
|
model.borderColor = valueOrDefault$5(options.hoverBorderColor, getHoverColor(options.borderColor));
|
|
model.borderWidth = valueOrDefault$5(options.hoverBorderWidth, options.borderWidth);
|
|
model.radius = valueOrDefault$5(options.hoverRadius, options.radius);
|
|
},
|
|
});
|
|
|
|
var resolve$5 = helpers$1.options.resolve;
|
|
|
|
core_defaults._set('polarArea', {
|
|
scale: {
|
|
type: 'radialLinear',
|
|
angleLines: {
|
|
display: false
|
|
},
|
|
gridLines: {
|
|
circular: true
|
|
},
|
|
pointLabels: {
|
|
display: false
|
|
},
|
|
ticks: {
|
|
beginAtZero: true
|
|
}
|
|
},
|
|
|
|
// Boolean - Whether to animate the rotation of the chart
|
|
animation: {
|
|
animateRotate: true,
|
|
animateScale: true
|
|
},
|
|
|
|
startAngle: -0.5 * Math.PI,
|
|
legendCallback: function(chart) {
|
|
var text = [];
|
|
text.push('<ul class="' + chart.id + '-legend">');
|
|
|
|
var data = chart.data;
|
|
var datasets = data.datasets;
|
|
var labels = data.labels;
|
|
|
|
if (datasets.length) {
|
|
for (var i = 0; i < datasets[0].data.length; ++i) {
|
|
text.push('<li><span style="background-color:' + datasets[0].backgroundColor[i] + '"></span>');
|
|
if (labels[i]) {
|
|
text.push(labels[i]);
|
|
}
|
|
text.push('</li>');
|
|
}
|
|
}
|
|
|
|
text.push('</ul>');
|
|
return text.join('');
|
|
},
|
|
legend: {
|
|
labels: {
|
|
generateLabels: function(chart) {
|
|
var data = chart.data;
|
|
if (data.labels.length && data.datasets.length) {
|
|
return data.labels.map(function(label, i) {
|
|
var meta = chart.getDatasetMeta(0);
|
|
var ds = data.datasets[0];
|
|
var arc = meta.data[i];
|
|
var custom = arc.custom || {};
|
|
var arcOpts = chart.options.elements.arc;
|
|
var fill = resolve$5([custom.backgroundColor, ds.backgroundColor, arcOpts.backgroundColor], undefined, i);
|
|
var stroke = resolve$5([custom.borderColor, ds.borderColor, arcOpts.borderColor], undefined, i);
|
|
var bw = resolve$5([custom.borderWidth, ds.borderWidth, arcOpts.borderWidth], undefined, i);
|
|
|
|
return {
|
|
text: label,
|
|
fillStyle: fill,
|
|
strokeStyle: stroke,
|
|
lineWidth: bw,
|
|
hidden: isNaN(ds.data[i]) || meta.data[i].hidden,
|
|
|
|
// Extra data used for toggling the correct item
|
|
index: i
|
|
};
|
|
});
|
|
}
|
|
return [];
|
|
}
|
|
},
|
|
|
|
onClick: function(e, legendItem) {
|
|
var index = legendItem.index;
|
|
var chart = this.chart;
|
|
var i, ilen, meta;
|
|
|
|
for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) {
|
|
meta = chart.getDatasetMeta(i);
|
|
meta.data[index].hidden = !meta.data[index].hidden;
|
|
}
|
|
|
|
chart.update();
|
|
}
|
|
},
|
|
|
|
// Need to override these to give a nice default
|
|
tooltips: {
|
|
callbacks: {
|
|
title: function() {
|
|
return '';
|
|
},
|
|
label: function(item, data) {
|
|
return data.labels[item.index] + ': ' + item.yLabel;
|
|
}
|
|
}
|
|
}
|
|
});
|
|
|
|
var controller_polarArea = core_datasetController.extend({
|
|
|
|
dataElementType: elements.Arc,
|
|
|
|
linkScales: helpers$1.noop,
|
|
|
|
update: function(reset) {
|
|
var me = this;
|
|
var dataset = me.getDataset();
|
|
var meta = me.getMeta();
|
|
var start = me.chart.options.startAngle || 0;
|
|
var starts = me._starts = [];
|
|
var angles = me._angles = [];
|
|
var arcs = meta.data;
|
|
var i, ilen, angle;
|
|
|
|
me._updateRadius();
|
|
|
|
meta.count = me.countVisibleElements();
|
|
|
|
for (i = 0, ilen = dataset.data.length; i < ilen; i++) {
|
|
starts[i] = start;
|
|
angle = me._computeAngle(i);
|
|
angles[i] = angle;
|
|
start += angle;
|
|
}
|
|
|
|
for (i = 0, ilen = arcs.length; i < ilen; ++i) {
|
|
arcs[i]._options = me._resolveElementOptions(arcs[i], i);
|
|
me.updateElement(arcs[i], i, reset);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_updateRadius: function() {
|
|
var me = this;
|
|
var chart = me.chart;
|
|
var chartArea = chart.chartArea;
|
|
var opts = chart.options;
|
|
var minSize = Math.min(chartArea.right - chartArea.left, chartArea.bottom - chartArea.top);
|
|
|
|
chart.outerRadius = Math.max(minSize / 2, 0);
|
|
chart.innerRadius = Math.max(opts.cutoutPercentage ? (chart.outerRadius / 100) * (opts.cutoutPercentage) : 1, 0);
|
|
chart.radiusLength = (chart.outerRadius - chart.innerRadius) / chart.getVisibleDatasetCount();
|
|
|
|
me.outerRadius = chart.outerRadius - (chart.radiusLength * me.index);
|
|
me.innerRadius = me.outerRadius - chart.radiusLength;
|
|
},
|
|
|
|
updateElement: function(arc, index, reset) {
|
|
var me = this;
|
|
var chart = me.chart;
|
|
var dataset = me.getDataset();
|
|
var opts = chart.options;
|
|
var animationOpts = opts.animation;
|
|
var scale = chart.scale;
|
|
var labels = chart.data.labels;
|
|
|
|
var centerX = scale.xCenter;
|
|
var centerY = scale.yCenter;
|
|
|
|
// var negHalfPI = -0.5 * Math.PI;
|
|
var datasetStartAngle = opts.startAngle;
|
|
var distance = arc.hidden ? 0 : scale.getDistanceFromCenterForValue(dataset.data[index]);
|
|
var startAngle = me._starts[index];
|
|
var endAngle = startAngle + (arc.hidden ? 0 : me._angles[index]);
|
|
|
|
var resetRadius = animationOpts.animateScale ? 0 : scale.getDistanceFromCenterForValue(dataset.data[index]);
|
|
var options = arc._options || {};
|
|
|
|
helpers$1.extend(arc, {
|
|
// Utility
|
|
_datasetIndex: me.index,
|
|
_index: index,
|
|
_scale: scale,
|
|
|
|
// Desired view properties
|
|
_model: {
|
|
backgroundColor: options.backgroundColor,
|
|
borderColor: options.borderColor,
|
|
borderWidth: options.borderWidth,
|
|
borderAlign: options.borderAlign,
|
|
x: centerX,
|
|
y: centerY,
|
|
innerRadius: 0,
|
|
outerRadius: reset ? resetRadius : distance,
|
|
startAngle: reset && animationOpts.animateRotate ? datasetStartAngle : startAngle,
|
|
endAngle: reset && animationOpts.animateRotate ? datasetStartAngle : endAngle,
|
|
label: helpers$1.valueAtIndexOrDefault(labels, index, labels[index])
|
|
}
|
|
});
|
|
|
|
arc.pivot();
|
|
},
|
|
|
|
countVisibleElements: function() {
|
|
var dataset = this.getDataset();
|
|
var meta = this.getMeta();
|
|
var count = 0;
|
|
|
|
helpers$1.each(meta.data, function(element, index) {
|
|
if (!isNaN(dataset.data[index]) && !element.hidden) {
|
|
count++;
|
|
}
|
|
});
|
|
|
|
return count;
|
|
},
|
|
|
|
/**
|
|
* @protected
|
|
*/
|
|
setHoverStyle: function(arc) {
|
|
var model = arc._model;
|
|
var options = arc._options;
|
|
var getHoverColor = helpers$1.getHoverColor;
|
|
var valueOrDefault = helpers$1.valueOrDefault;
|
|
|
|
arc.$previousStyle = {
|
|
backgroundColor: model.backgroundColor,
|
|
borderColor: model.borderColor,
|
|
borderWidth: model.borderWidth,
|
|
};
|
|
|
|
model.backgroundColor = valueOrDefault(options.hoverBackgroundColor, getHoverColor(options.backgroundColor));
|
|
model.borderColor = valueOrDefault(options.hoverBorderColor, getHoverColor(options.borderColor));
|
|
model.borderWidth = valueOrDefault(options.hoverBorderWidth, options.borderWidth);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_resolveElementOptions: function(arc, index) {
|
|
var me = this;
|
|
var chart = me.chart;
|
|
var dataset = me.getDataset();
|
|
var custom = arc.custom || {};
|
|
var options = chart.options.elements.arc;
|
|
var values = {};
|
|
var i, ilen, key;
|
|
|
|
// Scriptable options
|
|
var context = {
|
|
chart: chart,
|
|
dataIndex: index,
|
|
dataset: dataset,
|
|
datasetIndex: me.index
|
|
};
|
|
|
|
var keys = [
|
|
'backgroundColor',
|
|
'borderColor',
|
|
'borderWidth',
|
|
'borderAlign',
|
|
'hoverBackgroundColor',
|
|
'hoverBorderColor',
|
|
'hoverBorderWidth',
|
|
];
|
|
|
|
for (i = 0, ilen = keys.length; i < ilen; ++i) {
|
|
key = keys[i];
|
|
values[key] = resolve$5([
|
|
custom[key],
|
|
dataset[key],
|
|
options[key]
|
|
], context, index);
|
|
}
|
|
|
|
return values;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_computeAngle: function(index) {
|
|
var me = this;
|
|
var count = this.getMeta().count;
|
|
var dataset = me.getDataset();
|
|
var meta = me.getMeta();
|
|
|
|
if (isNaN(dataset.data[index]) || meta.data[index].hidden) {
|
|
return 0;
|
|
}
|
|
|
|
// Scriptable options
|
|
var context = {
|
|
chart: me.chart,
|
|
dataIndex: index,
|
|
dataset: dataset,
|
|
datasetIndex: me.index
|
|
};
|
|
|
|
return resolve$5([
|
|
me.chart.options.elements.arc.angle,
|
|
(2 * Math.PI) / count
|
|
], context, index);
|
|
}
|
|
});
|
|
|
|
core_defaults._set('pie', helpers$1.clone(core_defaults.doughnut));
|
|
core_defaults._set('pie', {
|
|
cutoutPercentage: 0
|
|
});
|
|
|
|
// Pie charts are Doughnut chart with different defaults
|
|
var controller_pie = controller_doughnut;
|
|
|
|
var valueOrDefault$6 = helpers$1.valueOrDefault;
|
|
var resolve$6 = helpers$1.options.resolve;
|
|
|
|
core_defaults._set('radar', {
|
|
scale: {
|
|
type: 'radialLinear'
|
|
},
|
|
elements: {
|
|
line: {
|
|
tension: 0 // no bezier in radar
|
|
}
|
|
}
|
|
});
|
|
|
|
var controller_radar = core_datasetController.extend({
|
|
|
|
datasetElementType: elements.Line,
|
|
|
|
dataElementType: elements.Point,
|
|
|
|
linkScales: helpers$1.noop,
|
|
|
|
update: function(reset) {
|
|
var me = this;
|
|
var meta = me.getMeta();
|
|
var line = meta.dataset;
|
|
var points = meta.data || [];
|
|
var scale = me.chart.scale;
|
|
var dataset = me.getDataset();
|
|
var i, ilen;
|
|
|
|
// Compatibility: If the properties are defined with only the old name, use those values
|
|
if ((dataset.tension !== undefined) && (dataset.lineTension === undefined)) {
|
|
dataset.lineTension = dataset.tension;
|
|
}
|
|
|
|
// Utility
|
|
line._scale = scale;
|
|
line._datasetIndex = me.index;
|
|
// Data
|
|
line._children = points;
|
|
line._loop = true;
|
|
// Model
|
|
line._model = me._resolveLineOptions(line);
|
|
|
|
line.pivot();
|
|
|
|
// Update Points
|
|
for (i = 0, ilen = points.length; i < ilen; ++i) {
|
|
me.updateElement(points[i], i, reset);
|
|
}
|
|
|
|
// Update bezier control points
|
|
me.updateBezierControlPoints();
|
|
|
|
// Now pivot the point for animation
|
|
for (i = 0, ilen = points.length; i < ilen; ++i) {
|
|
points[i].pivot();
|
|
}
|
|
},
|
|
|
|
updateElement: function(point, index, reset) {
|
|
var me = this;
|
|
var custom = point.custom || {};
|
|
var dataset = me.getDataset();
|
|
var scale = me.chart.scale;
|
|
var pointPosition = scale.getPointPositionForValue(index, dataset.data[index]);
|
|
var options = me._resolvePointOptions(point, index);
|
|
var lineModel = me.getMeta().dataset._model;
|
|
var x = reset ? scale.xCenter : pointPosition.x;
|
|
var y = reset ? scale.yCenter : pointPosition.y;
|
|
|
|
// Utility
|
|
point._scale = scale;
|
|
point._options = options;
|
|
point._datasetIndex = me.index;
|
|
point._index = index;
|
|
|
|
// Desired view properties
|
|
point._model = {
|
|
x: x, // value not used in dataset scale, but we want a consistent API between scales
|
|
y: y,
|
|
skip: custom.skip || isNaN(x) || isNaN(y),
|
|
// Appearance
|
|
radius: options.radius,
|
|
pointStyle: options.pointStyle,
|
|
rotation: options.rotation,
|
|
backgroundColor: options.backgroundColor,
|
|
borderColor: options.borderColor,
|
|
borderWidth: options.borderWidth,
|
|
tension: valueOrDefault$6(custom.tension, lineModel ? lineModel.tension : 0),
|
|
|
|
// Tooltip
|
|
hitRadius: options.hitRadius
|
|
};
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_resolvePointOptions: function(element, index) {
|
|
var me = this;
|
|
var chart = me.chart;
|
|
var dataset = chart.data.datasets[me.index];
|
|
var custom = element.custom || {};
|
|
var options = chart.options.elements.point;
|
|
var values = {};
|
|
var i, ilen, key;
|
|
|
|
// Scriptable options
|
|
var context = {
|
|
chart: chart,
|
|
dataIndex: index,
|
|
dataset: dataset,
|
|
datasetIndex: me.index
|
|
};
|
|
|
|
var ELEMENT_OPTIONS = {
|
|
backgroundColor: 'pointBackgroundColor',
|
|
borderColor: 'pointBorderColor',
|
|
borderWidth: 'pointBorderWidth',
|
|
hitRadius: 'pointHitRadius',
|
|
hoverBackgroundColor: 'pointHoverBackgroundColor',
|
|
hoverBorderColor: 'pointHoverBorderColor',
|
|
hoverBorderWidth: 'pointHoverBorderWidth',
|
|
hoverRadius: 'pointHoverRadius',
|
|
pointStyle: 'pointStyle',
|
|
radius: 'pointRadius',
|
|
rotation: 'pointRotation'
|
|
};
|
|
var keys = Object.keys(ELEMENT_OPTIONS);
|
|
|
|
for (i = 0, ilen = keys.length; i < ilen; ++i) {
|
|
key = keys[i];
|
|
values[key] = resolve$6([
|
|
custom[key],
|
|
dataset[ELEMENT_OPTIONS[key]],
|
|
dataset[key],
|
|
options[key]
|
|
], context, index);
|
|
}
|
|
|
|
return values;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_resolveLineOptions: function(element) {
|
|
var me = this;
|
|
var chart = me.chart;
|
|
var dataset = chart.data.datasets[me.index];
|
|
var custom = element.custom || {};
|
|
var options = chart.options.elements.line;
|
|
var values = {};
|
|
var i, ilen, key;
|
|
|
|
var keys = [
|
|
'backgroundColor',
|
|
'borderWidth',
|
|
'borderColor',
|
|
'borderCapStyle',
|
|
'borderDash',
|
|
'borderDashOffset',
|
|
'borderJoinStyle',
|
|
'fill'
|
|
];
|
|
|
|
for (i = 0, ilen = keys.length; i < ilen; ++i) {
|
|
key = keys[i];
|
|
values[key] = resolve$6([
|
|
custom[key],
|
|
dataset[key],
|
|
options[key]
|
|
]);
|
|
}
|
|
|
|
values.tension = valueOrDefault$6(dataset.lineTension, options.tension);
|
|
|
|
return values;
|
|
},
|
|
|
|
updateBezierControlPoints: function() {
|
|
var me = this;
|
|
var meta = me.getMeta();
|
|
var area = me.chart.chartArea;
|
|
var points = meta.data || [];
|
|
var i, ilen, model, controlPoints;
|
|
|
|
function capControlPoint(pt, min, max) {
|
|
return Math.max(Math.min(pt, max), min);
|
|
}
|
|
|
|
for (i = 0, ilen = points.length; i < ilen; ++i) {
|
|
model = points[i]._model;
|
|
controlPoints = helpers$1.splineCurve(
|
|
helpers$1.previousItem(points, i, true)._model,
|
|
model,
|
|
helpers$1.nextItem(points, i, true)._model,
|
|
model.tension
|
|
);
|
|
|
|
// Prevent the bezier going outside of the bounds of the graph
|
|
model.controlPointPreviousX = capControlPoint(controlPoints.previous.x, area.left, area.right);
|
|
model.controlPointPreviousY = capControlPoint(controlPoints.previous.y, area.top, area.bottom);
|
|
model.controlPointNextX = capControlPoint(controlPoints.next.x, area.left, area.right);
|
|
model.controlPointNextY = capControlPoint(controlPoints.next.y, area.top, area.bottom);
|
|
}
|
|
},
|
|
|
|
setHoverStyle: function(point) {
|
|
var model = point._model;
|
|
var options = point._options;
|
|
var getHoverColor = helpers$1.getHoverColor;
|
|
|
|
point.$previousStyle = {
|
|
backgroundColor: model.backgroundColor,
|
|
borderColor: model.borderColor,
|
|
borderWidth: model.borderWidth,
|
|
radius: model.radius
|
|
};
|
|
|
|
model.backgroundColor = valueOrDefault$6(options.hoverBackgroundColor, getHoverColor(options.backgroundColor));
|
|
model.borderColor = valueOrDefault$6(options.hoverBorderColor, getHoverColor(options.borderColor));
|
|
model.borderWidth = valueOrDefault$6(options.hoverBorderWidth, options.borderWidth);
|
|
model.radius = valueOrDefault$6(options.hoverRadius, options.radius);
|
|
}
|
|
});
|
|
|
|
core_defaults._set('scatter', {
|
|
hover: {
|
|
mode: 'single'
|
|
},
|
|
|
|
scales: {
|
|
xAxes: [{
|
|
id: 'x-axis-1', // need an ID so datasets can reference the scale
|
|
type: 'linear', // scatter should not use a category axis
|
|
position: 'bottom'
|
|
}],
|
|
yAxes: [{
|
|
id: 'y-axis-1',
|
|
type: 'linear',
|
|
position: 'left'
|
|
}]
|
|
},
|
|
|
|
showLines: false,
|
|
|
|
tooltips: {
|
|
callbacks: {
|
|
title: function() {
|
|
return ''; // doesn't make sense for scatter since data are formatted as a point
|
|
},
|
|
label: function(item) {
|
|
return '(' + item.xLabel + ', ' + item.yLabel + ')';
|
|
}
|
|
}
|
|
}
|
|
});
|
|
|
|
// Scatter charts use line controllers
|
|
var controller_scatter = controller_line;
|
|
|
|
// NOTE export a map in which the key represents the controller type, not
|
|
// the class, and so must be CamelCase in order to be correctly retrieved
|
|
// by the controller in core.controller.js (`controllers[meta.type]`).
|
|
|
|
var controllers = {
|
|
bar: controller_bar,
|
|
bubble: controller_bubble,
|
|
doughnut: controller_doughnut,
|
|
horizontalBar: controller_horizontalBar,
|
|
line: controller_line,
|
|
polarArea: controller_polarArea,
|
|
pie: controller_pie,
|
|
radar: controller_radar,
|
|
scatter: controller_scatter
|
|
};
|
|
|
|
/**
|
|
* Helper function to get relative position for an event
|
|
* @param {Event|IEvent} event - The event to get the position for
|
|
* @param {Chart} chart - The chart
|
|
* @returns {object} the event position
|
|
*/
|
|
function getRelativePosition(e, chart) {
|
|
if (e.native) {
|
|
return {
|
|
x: e.x,
|
|
y: e.y
|
|
};
|
|
}
|
|
|
|
return helpers$1.getRelativePosition(e, chart);
|
|
}
|
|
|
|
/**
|
|
* Helper function to traverse all of the visible elements in the chart
|
|
* @param {Chart} chart - the chart
|
|
* @param {function} handler - the callback to execute for each visible item
|
|
*/
|
|
function parseVisibleItems(chart, handler) {
|
|
var datasets = chart.data.datasets;
|
|
var meta, i, j, ilen, jlen;
|
|
|
|
for (i = 0, ilen = datasets.length; i < ilen; ++i) {
|
|
if (!chart.isDatasetVisible(i)) {
|
|
continue;
|
|
}
|
|
|
|
meta = chart.getDatasetMeta(i);
|
|
for (j = 0, jlen = meta.data.length; j < jlen; ++j) {
|
|
var element = meta.data[j];
|
|
if (!element._view.skip) {
|
|
handler(element);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Helper function to get the items that intersect the event position
|
|
* @param {ChartElement[]} items - elements to filter
|
|
* @param {object} position - the point to be nearest to
|
|
* @return {ChartElement[]} the nearest items
|
|
*/
|
|
function getIntersectItems(chart, position) {
|
|
var elements = [];
|
|
|
|
parseVisibleItems(chart, function(element) {
|
|
if (element.inRange(position.x, position.y)) {
|
|
elements.push(element);
|
|
}
|
|
});
|
|
|
|
return elements;
|
|
}
|
|
|
|
/**
|
|
* Helper function to get the items nearest to the event position considering all visible items in teh chart
|
|
* @param {Chart} chart - the chart to look at elements from
|
|
* @param {object} position - the point to be nearest to
|
|
* @param {boolean} intersect - if true, only consider items that intersect the position
|
|
* @param {function} distanceMetric - function to provide the distance between points
|
|
* @return {ChartElement[]} the nearest items
|
|
*/
|
|
function getNearestItems(chart, position, intersect, distanceMetric) {
|
|
var minDistance = Number.POSITIVE_INFINITY;
|
|
var nearestItems = [];
|
|
|
|
parseVisibleItems(chart, function(element) {
|
|
if (intersect && !element.inRange(position.x, position.y)) {
|
|
return;
|
|
}
|
|
|
|
var center = element.getCenterPoint();
|
|
var distance = distanceMetric(position, center);
|
|
if (distance < minDistance) {
|
|
nearestItems = [element];
|
|
minDistance = distance;
|
|
} else if (distance === minDistance) {
|
|
// Can have multiple items at the same distance in which case we sort by size
|
|
nearestItems.push(element);
|
|
}
|
|
});
|
|
|
|
return nearestItems;
|
|
}
|
|
|
|
/**
|
|
* Get a distance metric function for two points based on the
|
|
* axis mode setting
|
|
* @param {string} axis - the axis mode. x|y|xy
|
|
*/
|
|
function getDistanceMetricForAxis(axis) {
|
|
var useX = axis.indexOf('x') !== -1;
|
|
var useY = axis.indexOf('y') !== -1;
|
|
|
|
return function(pt1, pt2) {
|
|
var deltaX = useX ? Math.abs(pt1.x - pt2.x) : 0;
|
|
var deltaY = useY ? Math.abs(pt1.y - pt2.y) : 0;
|
|
return Math.sqrt(Math.pow(deltaX, 2) + Math.pow(deltaY, 2));
|
|
};
|
|
}
|
|
|
|
function indexMode(chart, e, options) {
|
|
var position = getRelativePosition(e, chart);
|
|
// Default axis for index mode is 'x' to match old behaviour
|
|
options.axis = options.axis || 'x';
|
|
var distanceMetric = getDistanceMetricForAxis(options.axis);
|
|
var items = options.intersect ? getIntersectItems(chart, position) : getNearestItems(chart, position, false, distanceMetric);
|
|
var elements = [];
|
|
|
|
if (!items.length) {
|
|
return [];
|
|
}
|
|
|
|
chart.data.datasets.forEach(function(dataset, datasetIndex) {
|
|
if (chart.isDatasetVisible(datasetIndex)) {
|
|
var meta = chart.getDatasetMeta(datasetIndex);
|
|
var element = meta.data[items[0]._index];
|
|
|
|
// don't count items that are skipped (null data)
|
|
if (element && !element._view.skip) {
|
|
elements.push(element);
|
|
}
|
|
}
|
|
});
|
|
|
|
return elements;
|
|
}
|
|
|
|
/**
|
|
* @interface IInteractionOptions
|
|
*/
|
|
/**
|
|
* If true, only consider items that intersect the point
|
|
* @name IInterfaceOptions#boolean
|
|
* @type Boolean
|
|
*/
|
|
|
|
/**
|
|
* Contains interaction related functions
|
|
* @namespace Chart.Interaction
|
|
*/
|
|
var core_interaction = {
|
|
// Helper function for different modes
|
|
modes: {
|
|
single: function(chart, e) {
|
|
var position = getRelativePosition(e, chart);
|
|
var elements = [];
|
|
|
|
parseVisibleItems(chart, function(element) {
|
|
if (element.inRange(position.x, position.y)) {
|
|
elements.push(element);
|
|
return elements;
|
|
}
|
|
});
|
|
|
|
return elements.slice(0, 1);
|
|
},
|
|
|
|
/**
|
|
* @function Chart.Interaction.modes.label
|
|
* @deprecated since version 2.4.0
|
|
* @todo remove at version 3
|
|
* @private
|
|
*/
|
|
label: indexMode,
|
|
|
|
/**
|
|
* Returns items at the same index. If the options.intersect parameter is true, we only return items if we intersect something
|
|
* If the options.intersect mode is false, we find the nearest item and return the items at the same index as that item
|
|
* @function Chart.Interaction.modes.index
|
|
* @since v2.4.0
|
|
* @param {Chart} chart - the chart we are returning items from
|
|
* @param {Event} e - the event we are find things at
|
|
* @param {IInteractionOptions} options - options to use during interaction
|
|
* @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
|
|
*/
|
|
index: indexMode,
|
|
|
|
/**
|
|
* Returns items in the same dataset. If the options.intersect parameter is true, we only return items if we intersect something
|
|
* If the options.intersect is false, we find the nearest item and return the items in that dataset
|
|
* @function Chart.Interaction.modes.dataset
|
|
* @param {Chart} chart - the chart we are returning items from
|
|
* @param {Event} e - the event we are find things at
|
|
* @param {IInteractionOptions} options - options to use during interaction
|
|
* @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
|
|
*/
|
|
dataset: function(chart, e, options) {
|
|
var position = getRelativePosition(e, chart);
|
|
options.axis = options.axis || 'xy';
|
|
var distanceMetric = getDistanceMetricForAxis(options.axis);
|
|
var items = options.intersect ? getIntersectItems(chart, position) : getNearestItems(chart, position, false, distanceMetric);
|
|
|
|
if (items.length > 0) {
|
|
items = chart.getDatasetMeta(items[0]._datasetIndex).data;
|
|
}
|
|
|
|
return items;
|
|
},
|
|
|
|
/**
|
|
* @function Chart.Interaction.modes.x-axis
|
|
* @deprecated since version 2.4.0. Use index mode and intersect == true
|
|
* @todo remove at version 3
|
|
* @private
|
|
*/
|
|
'x-axis': function(chart, e) {
|
|
return indexMode(chart, e, {intersect: false});
|
|
},
|
|
|
|
/**
|
|
* Point mode returns all elements that hit test based on the event position
|
|
* of the event
|
|
* @function Chart.Interaction.modes.intersect
|
|
* @param {Chart} chart - the chart we are returning items from
|
|
* @param {Event} e - the event we are find things at
|
|
* @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
|
|
*/
|
|
point: function(chart, e) {
|
|
var position = getRelativePosition(e, chart);
|
|
return getIntersectItems(chart, position);
|
|
},
|
|
|
|
/**
|
|
* nearest mode returns the element closest to the point
|
|
* @function Chart.Interaction.modes.intersect
|
|
* @param {Chart} chart - the chart we are returning items from
|
|
* @param {Event} e - the event we are find things at
|
|
* @param {IInteractionOptions} options - options to use
|
|
* @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
|
|
*/
|
|
nearest: function(chart, e, options) {
|
|
var position = getRelativePosition(e, chart);
|
|
options.axis = options.axis || 'xy';
|
|
var distanceMetric = getDistanceMetricForAxis(options.axis);
|
|
return getNearestItems(chart, position, options.intersect, distanceMetric);
|
|
},
|
|
|
|
/**
|
|
* x mode returns the elements that hit-test at the current x coordinate
|
|
* @function Chart.Interaction.modes.x
|
|
* @param {Chart} chart - the chart we are returning items from
|
|
* @param {Event} e - the event we are find things at
|
|
* @param {IInteractionOptions} options - options to use
|
|
* @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
|
|
*/
|
|
x: function(chart, e, options) {
|
|
var position = getRelativePosition(e, chart);
|
|
var items = [];
|
|
var intersectsItem = false;
|
|
|
|
parseVisibleItems(chart, function(element) {
|
|
if (element.inXRange(position.x)) {
|
|
items.push(element);
|
|
}
|
|
|
|
if (element.inRange(position.x, position.y)) {
|
|
intersectsItem = true;
|
|
}
|
|
});
|
|
|
|
// If we want to trigger on an intersect and we don't have any items
|
|
// that intersect the position, return nothing
|
|
if (options.intersect && !intersectsItem) {
|
|
items = [];
|
|
}
|
|
return items;
|
|
},
|
|
|
|
/**
|
|
* y mode returns the elements that hit-test at the current y coordinate
|
|
* @function Chart.Interaction.modes.y
|
|
* @param {Chart} chart - the chart we are returning items from
|
|
* @param {Event} e - the event we are find things at
|
|
* @param {IInteractionOptions} options - options to use
|
|
* @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
|
|
*/
|
|
y: function(chart, e, options) {
|
|
var position = getRelativePosition(e, chart);
|
|
var items = [];
|
|
var intersectsItem = false;
|
|
|
|
parseVisibleItems(chart, function(element) {
|
|
if (element.inYRange(position.y)) {
|
|
items.push(element);
|
|
}
|
|
|
|
if (element.inRange(position.x, position.y)) {
|
|
intersectsItem = true;
|
|
}
|
|
});
|
|
|
|
// If we want to trigger on an intersect and we don't have any items
|
|
// that intersect the position, return nothing
|
|
if (options.intersect && !intersectsItem) {
|
|
items = [];
|
|
}
|
|
return items;
|
|
}
|
|
}
|
|
};
|
|
|
|
function filterByPosition(array, position) {
|
|
return helpers$1.where(array, function(v) {
|
|
return v.position === position;
|
|
});
|
|
}
|
|
|
|
function sortByWeight(array, reverse) {
|
|
array.forEach(function(v, i) {
|
|
v._tmpIndex_ = i;
|
|
return v;
|
|
});
|
|
array.sort(function(a, b) {
|
|
var v0 = reverse ? b : a;
|
|
var v1 = reverse ? a : b;
|
|
return v0.weight === v1.weight ?
|
|
v0._tmpIndex_ - v1._tmpIndex_ :
|
|
v0.weight - v1.weight;
|
|
});
|
|
array.forEach(function(v) {
|
|
delete v._tmpIndex_;
|
|
});
|
|
}
|
|
|
|
function findMaxPadding(boxes) {
|
|
var top = 0;
|
|
var left = 0;
|
|
var bottom = 0;
|
|
var right = 0;
|
|
helpers$1.each(boxes, function(box) {
|
|
if (box.getPadding) {
|
|
var boxPadding = box.getPadding();
|
|
top = Math.max(top, boxPadding.top);
|
|
left = Math.max(left, boxPadding.left);
|
|
bottom = Math.max(bottom, boxPadding.bottom);
|
|
right = Math.max(right, boxPadding.right);
|
|
}
|
|
});
|
|
return {
|
|
top: top,
|
|
left: left,
|
|
bottom: bottom,
|
|
right: right
|
|
};
|
|
}
|
|
|
|
function addSizeByPosition(boxes, size) {
|
|
helpers$1.each(boxes, function(box) {
|
|
size[box.position] += box.isHorizontal() ? box.height : box.width;
|
|
});
|
|
}
|
|
|
|
core_defaults._set('global', {
|
|
layout: {
|
|
padding: {
|
|
top: 0,
|
|
right: 0,
|
|
bottom: 0,
|
|
left: 0
|
|
}
|
|
}
|
|
});
|
|
|
|
/**
|
|
* @interface ILayoutItem
|
|
* @prop {string} position - The position of the item in the chart layout. Possible values are
|
|
* 'left', 'top', 'right', 'bottom', and 'chartArea'
|
|
* @prop {number} weight - The weight used to sort the item. Higher weights are further away from the chart area
|
|
* @prop {boolean} fullWidth - if true, and the item is horizontal, then push vertical boxes down
|
|
* @prop {function} isHorizontal - returns true if the layout item is horizontal (ie. top or bottom)
|
|
* @prop {function} update - Takes two parameters: width and height. Returns size of item
|
|
* @prop {function} getPadding - Returns an object with padding on the edges
|
|
* @prop {number} width - Width of item. Must be valid after update()
|
|
* @prop {number} height - Height of item. Must be valid after update()
|
|
* @prop {number} left - Left edge of the item. Set by layout system and cannot be used in update
|
|
* @prop {number} top - Top edge of the item. Set by layout system and cannot be used in update
|
|
* @prop {number} right - Right edge of the item. Set by layout system and cannot be used in update
|
|
* @prop {number} bottom - Bottom edge of the item. Set by layout system and cannot be used in update
|
|
*/
|
|
|
|
// The layout service is very self explanatory. It's responsible for the layout within a chart.
|
|
// Scales, Legends and Plugins all rely on the layout service and can easily register to be placed anywhere they need
|
|
// It is this service's responsibility of carrying out that layout.
|
|
var core_layouts = {
|
|
defaults: {},
|
|
|
|
/**
|
|
* Register a box to a chart.
|
|
* A box is simply a reference to an object that requires layout. eg. Scales, Legend, Title.
|
|
* @param {Chart} chart - the chart to use
|
|
* @param {ILayoutItem} item - the item to add to be layed out
|
|
*/
|
|
addBox: function(chart, item) {
|
|
if (!chart.boxes) {
|
|
chart.boxes = [];
|
|
}
|
|
|
|
// initialize item with default values
|
|
item.fullWidth = item.fullWidth || false;
|
|
item.position = item.position || 'top';
|
|
item.weight = item.weight || 0;
|
|
|
|
chart.boxes.push(item);
|
|
},
|
|
|
|
/**
|
|
* Remove a layoutItem from a chart
|
|
* @param {Chart} chart - the chart to remove the box from
|
|
* @param {ILayoutItem} layoutItem - the item to remove from the layout
|
|
*/
|
|
removeBox: function(chart, layoutItem) {
|
|
var index = chart.boxes ? chart.boxes.indexOf(layoutItem) : -1;
|
|
if (index !== -1) {
|
|
chart.boxes.splice(index, 1);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Sets (or updates) options on the given `item`.
|
|
* @param {Chart} chart - the chart in which the item lives (or will be added to)
|
|
* @param {ILayoutItem} item - the item to configure with the given options
|
|
* @param {object} options - the new item options.
|
|
*/
|
|
configure: function(chart, item, options) {
|
|
var props = ['fullWidth', 'position', 'weight'];
|
|
var ilen = props.length;
|
|
var i = 0;
|
|
var prop;
|
|
|
|
for (; i < ilen; ++i) {
|
|
prop = props[i];
|
|
if (options.hasOwnProperty(prop)) {
|
|
item[prop] = options[prop];
|
|
}
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Fits boxes of the given chart into the given size by having each box measure itself
|
|
* then running a fitting algorithm
|
|
* @param {Chart} chart - the chart
|
|
* @param {number} width - the width to fit into
|
|
* @param {number} height - the height to fit into
|
|
*/
|
|
update: function(chart, width, height) {
|
|
if (!chart) {
|
|
return;
|
|
}
|
|
|
|
var layoutOptions = chart.options.layout || {};
|
|
var padding = helpers$1.options.toPadding(layoutOptions.padding);
|
|
var leftPadding = padding.left;
|
|
var rightPadding = padding.right;
|
|
var topPadding = padding.top;
|
|
var bottomPadding = padding.bottom;
|
|
|
|
var leftBoxes = filterByPosition(chart.boxes, 'left');
|
|
var rightBoxes = filterByPosition(chart.boxes, 'right');
|
|
var topBoxes = filterByPosition(chart.boxes, 'top');
|
|
var bottomBoxes = filterByPosition(chart.boxes, 'bottom');
|
|
var chartAreaBoxes = filterByPosition(chart.boxes, 'chartArea');
|
|
|
|
// Sort boxes by weight. A higher weight is further away from the chart area
|
|
sortByWeight(leftBoxes, true);
|
|
sortByWeight(rightBoxes, false);
|
|
sortByWeight(topBoxes, true);
|
|
sortByWeight(bottomBoxes, false);
|
|
|
|
var verticalBoxes = leftBoxes.concat(rightBoxes);
|
|
var horizontalBoxes = topBoxes.concat(bottomBoxes);
|
|
var outerBoxes = verticalBoxes.concat(horizontalBoxes);
|
|
|
|
// Essentially we now have any number of boxes on each of the 4 sides.
|
|
// Our canvas looks like the following.
|
|
// The areas L1 and L2 are the left axes. R1 is the right axis, T1 is the top axis and
|
|
// B1 is the bottom axis
|
|
// There are also 4 quadrant-like locations (left to right instead of clockwise) reserved for chart overlays
|
|
// These locations are single-box locations only, when trying to register a chartArea location that is already taken,
|
|
// an error will be thrown.
|
|
//
|
|
// |----------------------------------------------------|
|
|
// | T1 (Full Width) |
|
|
// |----------------------------------------------------|
|
|
// | | | T2 | |
|
|
// | |----|-------------------------------------|----|
|
|
// | | | C1 | | C2 | |
|
|
// | | |----| |----| |
|
|
// | | | | |
|
|
// | L1 | L2 | ChartArea (C0) | R1 |
|
|
// | | | | |
|
|
// | | |----| |----| |
|
|
// | | | C3 | | C4 | |
|
|
// | |----|-------------------------------------|----|
|
|
// | | | B1 | |
|
|
// |----------------------------------------------------|
|
|
// | B2 (Full Width) |
|
|
// |----------------------------------------------------|
|
|
//
|
|
// What we do to find the best sizing, we do the following
|
|
// 1. Determine the minimum size of the chart area.
|
|
// 2. Split the remaining width equally between each vertical axis
|
|
// 3. Split the remaining height equally between each horizontal axis
|
|
// 4. Give each layout the maximum size it can be. The layout will return it's minimum size
|
|
// 5. Adjust the sizes of each axis based on it's minimum reported size.
|
|
// 6. Refit each axis
|
|
// 7. Position each axis in the final location
|
|
// 8. Tell the chart the final location of the chart area
|
|
// 9. Tell any axes that overlay the chart area the positions of the chart area
|
|
|
|
// Step 1
|
|
var chartWidth = width - leftPadding - rightPadding;
|
|
var chartHeight = height - topPadding - bottomPadding;
|
|
var chartAreaWidth = chartWidth / 2; // min 50%
|
|
|
|
// Step 2
|
|
var verticalBoxWidth = (width - chartAreaWidth) / verticalBoxes.length;
|
|
|
|
// Step 3
|
|
// TODO re-limit horizontal axis height (this limit has affected only padding calculation since PR 1837)
|
|
// var horizontalBoxHeight = (height - chartAreaHeight) / horizontalBoxes.length;
|
|
|
|
// Step 4
|
|
var maxChartAreaWidth = chartWidth;
|
|
var maxChartAreaHeight = chartHeight;
|
|
var outerBoxSizes = {top: topPadding, left: leftPadding, bottom: bottomPadding, right: rightPadding};
|
|
var minBoxSizes = [];
|
|
var maxPadding;
|
|
|
|
function getMinimumBoxSize(box) {
|
|
var minSize;
|
|
var isHorizontal = box.isHorizontal();
|
|
|
|
if (isHorizontal) {
|
|
minSize = box.update(box.fullWidth ? chartWidth : maxChartAreaWidth, chartHeight / 2);
|
|
maxChartAreaHeight -= minSize.height;
|
|
} else {
|
|
minSize = box.update(verticalBoxWidth, maxChartAreaHeight);
|
|
maxChartAreaWidth -= minSize.width;
|
|
}
|
|
|
|
minBoxSizes.push({
|
|
horizontal: isHorizontal,
|
|
width: minSize.width,
|
|
box: box,
|
|
});
|
|
}
|
|
|
|
helpers$1.each(outerBoxes, getMinimumBoxSize);
|
|
|
|
// If a horizontal box has padding, we move the left boxes over to avoid ugly charts (see issue #2478)
|
|
maxPadding = findMaxPadding(outerBoxes);
|
|
|
|
// At this point, maxChartAreaHeight and maxChartAreaWidth are the size the chart area could
|
|
// be if the axes are drawn at their minimum sizes.
|
|
// Steps 5 & 6
|
|
|
|
// Function to fit a box
|
|
function fitBox(box) {
|
|
var minBoxSize = helpers$1.findNextWhere(minBoxSizes, function(minBox) {
|
|
return minBox.box === box;
|
|
});
|
|
|
|
if (minBoxSize) {
|
|
if (minBoxSize.horizontal) {
|
|
var scaleMargin = {
|
|
left: Math.max(outerBoxSizes.left, maxPadding.left),
|
|
right: Math.max(outerBoxSizes.right, maxPadding.right),
|
|
top: 0,
|
|
bottom: 0
|
|
};
|
|
|
|
// Don't use min size here because of label rotation. When the labels are rotated, their rotation highly depends
|
|
// on the margin. Sometimes they need to increase in size slightly
|
|
box.update(box.fullWidth ? chartWidth : maxChartAreaWidth, chartHeight / 2, scaleMargin);
|
|
} else {
|
|
box.update(minBoxSize.width, maxChartAreaHeight);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Update, and calculate the left and right margins for the horizontal boxes
|
|
helpers$1.each(verticalBoxes, fitBox);
|
|
addSizeByPosition(verticalBoxes, outerBoxSizes);
|
|
|
|
// Set the Left and Right margins for the horizontal boxes
|
|
helpers$1.each(horizontalBoxes, fitBox);
|
|
addSizeByPosition(horizontalBoxes, outerBoxSizes);
|
|
|
|
function finalFitVerticalBox(box) {
|
|
var minBoxSize = helpers$1.findNextWhere(minBoxSizes, function(minSize) {
|
|
return minSize.box === box;
|
|
});
|
|
|
|
var scaleMargin = {
|
|
left: 0,
|
|
right: 0,
|
|
top: outerBoxSizes.top,
|
|
bottom: outerBoxSizes.bottom
|
|
};
|
|
|
|
if (minBoxSize) {
|
|
box.update(minBoxSize.width, maxChartAreaHeight, scaleMargin);
|
|
}
|
|
}
|
|
|
|
// Let the left layout know the final margin
|
|
helpers$1.each(verticalBoxes, finalFitVerticalBox);
|
|
|
|
// Recalculate because the size of each layout might have changed slightly due to the margins (label rotation for instance)
|
|
outerBoxSizes = {top: topPadding, left: leftPadding, bottom: bottomPadding, right: rightPadding};
|
|
addSizeByPosition(outerBoxes, outerBoxSizes);
|
|
|
|
// We may be adding some padding to account for rotated x axis labels
|
|
var leftPaddingAddition = Math.max(maxPadding.left - outerBoxSizes.left, 0);
|
|
outerBoxSizes.left += leftPaddingAddition;
|
|
outerBoxSizes.right += Math.max(maxPadding.right - outerBoxSizes.right, 0);
|
|
|
|
var topPaddingAddition = Math.max(maxPadding.top - outerBoxSizes.top, 0);
|
|
outerBoxSizes.top += topPaddingAddition;
|
|
outerBoxSizes.bottom += Math.max(maxPadding.bottom - outerBoxSizes.bottom, 0);
|
|
|
|
// Figure out if our chart area changed. This would occur if the dataset layout label rotation
|
|
// changed due to the application of the margins in step 6. Since we can only get bigger, this is safe to do
|
|
// without calling `fit` again
|
|
var newMaxChartAreaHeight = height - outerBoxSizes.top - outerBoxSizes.bottom;
|
|
var newMaxChartAreaWidth = width - outerBoxSizes.left - outerBoxSizes.right;
|
|
|
|
if (newMaxChartAreaWidth !== maxChartAreaWidth || newMaxChartAreaHeight !== maxChartAreaHeight) {
|
|
helpers$1.each(verticalBoxes, function(box) {
|
|
box.height = newMaxChartAreaHeight;
|
|
});
|
|
|
|
helpers$1.each(horizontalBoxes, function(box) {
|
|
if (!box.fullWidth) {
|
|
box.width = newMaxChartAreaWidth;
|
|
}
|
|
});
|
|
|
|
maxChartAreaHeight = newMaxChartAreaHeight;
|
|
maxChartAreaWidth = newMaxChartAreaWidth;
|
|
}
|
|
|
|
// Step 7 - Position the boxes
|
|
var left = leftPadding + leftPaddingAddition;
|
|
var top = topPadding + topPaddingAddition;
|
|
|
|
function placeBox(box) {
|
|
if (box.isHorizontal()) {
|
|
box.left = box.fullWidth ? leftPadding : outerBoxSizes.left;
|
|
box.right = box.fullWidth ? width - rightPadding : outerBoxSizes.left + maxChartAreaWidth;
|
|
box.top = top;
|
|
box.bottom = top + box.height;
|
|
|
|
// Move to next point
|
|
top = box.bottom;
|
|
|
|
} else {
|
|
|
|
box.left = left;
|
|
box.right = left + box.width;
|
|
box.top = outerBoxSizes.top;
|
|
box.bottom = outerBoxSizes.top + maxChartAreaHeight;
|
|
|
|
// Move to next point
|
|
left = box.right;
|
|
}
|
|
}
|
|
|
|
helpers$1.each(leftBoxes.concat(topBoxes), placeBox);
|
|
|
|
// Account for chart width and height
|
|
left += maxChartAreaWidth;
|
|
top += maxChartAreaHeight;
|
|
|
|
helpers$1.each(rightBoxes, placeBox);
|
|
helpers$1.each(bottomBoxes, placeBox);
|
|
|
|
// Step 8
|
|
chart.chartArea = {
|
|
left: outerBoxSizes.left,
|
|
top: outerBoxSizes.top,
|
|
right: outerBoxSizes.left + maxChartAreaWidth,
|
|
bottom: outerBoxSizes.top + maxChartAreaHeight
|
|
};
|
|
|
|
// Step 9
|
|
helpers$1.each(chartAreaBoxes, function(box) {
|
|
box.left = chart.chartArea.left;
|
|
box.top = chart.chartArea.top;
|
|
box.right = chart.chartArea.right;
|
|
box.bottom = chart.chartArea.bottom;
|
|
|
|
box.update(maxChartAreaWidth, maxChartAreaHeight);
|
|
});
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Platform fallback implementation (minimal).
|
|
* @see https://github.com/chartjs/Chart.js/pull/4591#issuecomment-319575939
|
|
*/
|
|
|
|
var platform_basic = {
|
|
acquireContext: function(item) {
|
|
if (item && item.canvas) {
|
|
// Support for any object associated to a canvas (including a context2d)
|
|
item = item.canvas;
|
|
}
|
|
|
|
return item && item.getContext('2d') || null;
|
|
}
|
|
};
|
|
|
|
var platform_dom = "/*\n * DOM element rendering detection\n * https://davidwalsh.name/detect-node-insertion\n */\n@keyframes chartjs-render-animation {\n\tfrom { opacity: 0.99; }\n\tto { opacity: 1; }\n}\n\n.chartjs-render-monitor {\n\tanimation: chartjs-render-animation 0.001s;\n}\n\n/*\n * DOM element resizing detection\n * https://github.com/marcj/css-element-queries\n */\n.chartjs-size-monitor,\n.chartjs-size-monitor-expand,\n.chartjs-size-monitor-shrink {\n\tposition: absolute;\n\tdirection: ltr;\n\tleft: 0;\n\ttop: 0;\n\tright: 0;\n\tbottom: 0;\n\toverflow: hidden;\n\tpointer-events: none;\n\tvisibility: hidden;\n\tz-index: -1;\n}\n\n.chartjs-size-monitor-expand > div {\n\tposition: absolute;\n\twidth: 1000000px;\n\theight: 1000000px;\n\tleft: 0;\n\ttop: 0;\n}\n\n.chartjs-size-monitor-shrink > div {\n\tposition: absolute;\n\twidth: 200%;\n\theight: 200%;\n\tleft: 0;\n\ttop: 0;\n}\n";
|
|
|
|
var platform_dom$1 = /*#__PURE__*/Object.freeze({
|
|
default: platform_dom
|
|
});
|
|
|
|
function getCjsExportFromNamespace (n) {
|
|
return n && n.default || n;
|
|
}
|
|
|
|
var stylesheet = getCjsExportFromNamespace(platform_dom$1);
|
|
|
|
var EXPANDO_KEY = '$chartjs';
|
|
var CSS_PREFIX = 'chartjs-';
|
|
var CSS_SIZE_MONITOR = CSS_PREFIX + 'size-monitor';
|
|
var CSS_RENDER_MONITOR = CSS_PREFIX + 'render-monitor';
|
|
var CSS_RENDER_ANIMATION = CSS_PREFIX + 'render-animation';
|
|
var ANIMATION_START_EVENTS = ['animationstart', 'webkitAnimationStart'];
|
|
|
|
/**
|
|
* DOM event types -> Chart.js event types.
|
|
* Note: only events with different types are mapped.
|
|
* @see https://developer.mozilla.org/en-US/docs/Web/Events
|
|
*/
|
|
var EVENT_TYPES = {
|
|
touchstart: 'mousedown',
|
|
touchmove: 'mousemove',
|
|
touchend: 'mouseup',
|
|
pointerenter: 'mouseenter',
|
|
pointerdown: 'mousedown',
|
|
pointermove: 'mousemove',
|
|
pointerup: 'mouseup',
|
|
pointerleave: 'mouseout',
|
|
pointerout: 'mouseout'
|
|
};
|
|
|
|
/**
|
|
* The "used" size is the final value of a dimension property after all calculations have
|
|
* been performed. This method uses the computed style of `element` but returns undefined
|
|
* if the computed style is not expressed in pixels. That can happen in some cases where
|
|
* `element` has a size relative to its parent and this last one is not yet displayed,
|
|
* for example because of `display: none` on a parent node.
|
|
* @see https://developer.mozilla.org/en-US/docs/Web/CSS/used_value
|
|
* @returns {number} Size in pixels or undefined if unknown.
|
|
*/
|
|
function readUsedSize(element, property) {
|
|
var value = helpers$1.getStyle(element, property);
|
|
var matches = value && value.match(/^(\d+)(\.\d+)?px$/);
|
|
return matches ? Number(matches[1]) : undefined;
|
|
}
|
|
|
|
/**
|
|
* Initializes the canvas style and render size without modifying the canvas display size,
|
|
* since responsiveness is handled by the controller.resize() method. The config is used
|
|
* to determine the aspect ratio to apply in case no explicit height has been specified.
|
|
*/
|
|
function initCanvas(canvas, config) {
|
|
var style = canvas.style;
|
|
|
|
// NOTE(SB) canvas.getAttribute('width') !== canvas.width: in the first case it
|
|
// returns null or '' if no explicit value has been set to the canvas attribute.
|
|
var renderHeight = canvas.getAttribute('height');
|
|
var renderWidth = canvas.getAttribute('width');
|
|
|
|
// Chart.js modifies some canvas values that we want to restore on destroy
|
|
canvas[EXPANDO_KEY] = {
|
|
initial: {
|
|
height: renderHeight,
|
|
width: renderWidth,
|
|
style: {
|
|
display: style.display,
|
|
height: style.height,
|
|
width: style.width
|
|
}
|
|
}
|
|
};
|
|
|
|
// Force canvas to display as block to avoid extra space caused by inline
|
|
// elements, which would interfere with the responsive resize process.
|
|
// https://github.com/chartjs/Chart.js/issues/2538
|
|
style.display = style.display || 'block';
|
|
|
|
if (renderWidth === null || renderWidth === '') {
|
|
var displayWidth = readUsedSize(canvas, 'width');
|
|
if (displayWidth !== undefined) {
|
|
canvas.width = displayWidth;
|
|
}
|
|
}
|
|
|
|
if (renderHeight === null || renderHeight === '') {
|
|
if (canvas.style.height === '') {
|
|
// If no explicit render height and style height, let's apply the aspect ratio,
|
|
// which one can be specified by the user but also by charts as default option
|
|
// (i.e. options.aspectRatio). If not specified, use canvas aspect ratio of 2.
|
|
canvas.height = canvas.width / (config.options.aspectRatio || 2);
|
|
} else {
|
|
var displayHeight = readUsedSize(canvas, 'height');
|
|
if (displayWidth !== undefined) {
|
|
canvas.height = displayHeight;
|
|
}
|
|
}
|
|
}
|
|
|
|
return canvas;
|
|
}
|
|
|
|
/**
|
|
* Detects support for options object argument in addEventListener.
|
|
* https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/addEventListener#Safely_detecting_option_support
|
|
* @private
|
|
*/
|
|
var supportsEventListenerOptions = (function() {
|
|
var supports = false;
|
|
try {
|
|
var options = Object.defineProperty({}, 'passive', {
|
|
// eslint-disable-next-line getter-return
|
|
get: function() {
|
|
supports = true;
|
|
}
|
|
});
|
|
window.addEventListener('e', null, options);
|
|
} catch (e) {
|
|
// continue regardless of error
|
|
}
|
|
return supports;
|
|
}());
|
|
|
|
// Default passive to true as expected by Chrome for 'touchstart' and 'touchend' events.
|
|
// https://github.com/chartjs/Chart.js/issues/4287
|
|
var eventListenerOptions = supportsEventListenerOptions ? {passive: true} : false;
|
|
|
|
function addListener(node, type, listener) {
|
|
node.addEventListener(type, listener, eventListenerOptions);
|
|
}
|
|
|
|
function removeListener(node, type, listener) {
|
|
node.removeEventListener(type, listener, eventListenerOptions);
|
|
}
|
|
|
|
function createEvent(type, chart, x, y, nativeEvent) {
|
|
return {
|
|
type: type,
|
|
chart: chart,
|
|
native: nativeEvent || null,
|
|
x: x !== undefined ? x : null,
|
|
y: y !== undefined ? y : null,
|
|
};
|
|
}
|
|
|
|
function fromNativeEvent(event, chart) {
|
|
var type = EVENT_TYPES[event.type] || event.type;
|
|
var pos = helpers$1.getRelativePosition(event, chart);
|
|
return createEvent(type, chart, pos.x, pos.y, event);
|
|
}
|
|
|
|
function throttled(fn, thisArg) {
|
|
var ticking = false;
|
|
var args = [];
|
|
|
|
return function() {
|
|
args = Array.prototype.slice.call(arguments);
|
|
thisArg = thisArg || this;
|
|
|
|
if (!ticking) {
|
|
ticking = true;
|
|
helpers$1.requestAnimFrame.call(window, function() {
|
|
ticking = false;
|
|
fn.apply(thisArg, args);
|
|
});
|
|
}
|
|
};
|
|
}
|
|
|
|
function createDiv(cls) {
|
|
var el = document.createElement('div');
|
|
el.className = cls || '';
|
|
return el;
|
|
}
|
|
|
|
// Implementation based on https://github.com/marcj/css-element-queries
|
|
function createResizer(handler) {
|
|
var maxSize = 1000000;
|
|
|
|
// NOTE(SB) Don't use innerHTML because it could be considered unsafe.
|
|
// https://github.com/chartjs/Chart.js/issues/5902
|
|
var resizer = createDiv(CSS_SIZE_MONITOR);
|
|
var expand = createDiv(CSS_SIZE_MONITOR + '-expand');
|
|
var shrink = createDiv(CSS_SIZE_MONITOR + '-shrink');
|
|
|
|
expand.appendChild(createDiv());
|
|
shrink.appendChild(createDiv());
|
|
|
|
resizer.appendChild(expand);
|
|
resizer.appendChild(shrink);
|
|
resizer._reset = function() {
|
|
expand.scrollLeft = maxSize;
|
|
expand.scrollTop = maxSize;
|
|
shrink.scrollLeft = maxSize;
|
|
shrink.scrollTop = maxSize;
|
|
};
|
|
|
|
var onScroll = function() {
|
|
resizer._reset();
|
|
handler();
|
|
};
|
|
|
|
addListener(expand, 'scroll', onScroll.bind(expand, 'expand'));
|
|
addListener(shrink, 'scroll', onScroll.bind(shrink, 'shrink'));
|
|
|
|
return resizer;
|
|
}
|
|
|
|
// https://davidwalsh.name/detect-node-insertion
|
|
function watchForRender(node, handler) {
|
|
var expando = node[EXPANDO_KEY] || (node[EXPANDO_KEY] = {});
|
|
var proxy = expando.renderProxy = function(e) {
|
|
if (e.animationName === CSS_RENDER_ANIMATION) {
|
|
handler();
|
|
}
|
|
};
|
|
|
|
helpers$1.each(ANIMATION_START_EVENTS, function(type) {
|
|
addListener(node, type, proxy);
|
|
});
|
|
|
|
// #4737: Chrome might skip the CSS animation when the CSS_RENDER_MONITOR class
|
|
// is removed then added back immediately (same animation frame?). Accessing the
|
|
// `offsetParent` property will force a reflow and re-evaluate the CSS animation.
|
|
// https://gist.github.com/paulirish/5d52fb081b3570c81e3a#box-metrics
|
|
// https://github.com/chartjs/Chart.js/issues/4737
|
|
expando.reflow = !!node.offsetParent;
|
|
|
|
node.classList.add(CSS_RENDER_MONITOR);
|
|
}
|
|
|
|
function unwatchForRender(node) {
|
|
var expando = node[EXPANDO_KEY] || {};
|
|
var proxy = expando.renderProxy;
|
|
|
|
if (proxy) {
|
|
helpers$1.each(ANIMATION_START_EVENTS, function(type) {
|
|
removeListener(node, type, proxy);
|
|
});
|
|
|
|
delete expando.renderProxy;
|
|
}
|
|
|
|
node.classList.remove(CSS_RENDER_MONITOR);
|
|
}
|
|
|
|
function addResizeListener(node, listener, chart) {
|
|
var expando = node[EXPANDO_KEY] || (node[EXPANDO_KEY] = {});
|
|
|
|
// Let's keep track of this added resizer and thus avoid DOM query when removing it.
|
|
var resizer = expando.resizer = createResizer(throttled(function() {
|
|
if (expando.resizer) {
|
|
var container = chart.options.maintainAspectRatio && node.parentNode;
|
|
var w = container ? container.clientWidth : 0;
|
|
listener(createEvent('resize', chart));
|
|
if (container && container.clientWidth < w && chart.canvas) {
|
|
// If the container size shrank during chart resize, let's assume
|
|
// scrollbar appeared. So we resize again with the scrollbar visible -
|
|
// effectively making chart smaller and the scrollbar hidden again.
|
|
// Because we are inside `throttled`, and currently `ticking`, scroll
|
|
// events are ignored during this whole 2 resize process.
|
|
// If we assumed wrong and something else happened, we are resizing
|
|
// twice in a frame (potential performance issue)
|
|
listener(createEvent('resize', chart));
|
|
}
|
|
}
|
|
}));
|
|
|
|
// The resizer needs to be attached to the node parent, so we first need to be
|
|
// sure that `node` is attached to the DOM before injecting the resizer element.
|
|
watchForRender(node, function() {
|
|
if (expando.resizer) {
|
|
var container = node.parentNode;
|
|
if (container && container !== resizer.parentNode) {
|
|
container.insertBefore(resizer, container.firstChild);
|
|
}
|
|
|
|
// The container size might have changed, let's reset the resizer state.
|
|
resizer._reset();
|
|
}
|
|
});
|
|
}
|
|
|
|
function removeResizeListener(node) {
|
|
var expando = node[EXPANDO_KEY] || {};
|
|
var resizer = expando.resizer;
|
|
|
|
delete expando.resizer;
|
|
unwatchForRender(node);
|
|
|
|
if (resizer && resizer.parentNode) {
|
|
resizer.parentNode.removeChild(resizer);
|
|
}
|
|
}
|
|
|
|
function injectCSS(platform, css) {
|
|
// https://stackoverflow.com/q/3922139
|
|
var style = platform._style || document.createElement('style');
|
|
if (!platform._style) {
|
|
platform._style = style;
|
|
css = '/* Chart.js */\n' + css;
|
|
style.setAttribute('type', 'text/css');
|
|
document.getElementsByTagName('head')[0].appendChild(style);
|
|
}
|
|
|
|
style.appendChild(document.createTextNode(css));
|
|
}
|
|
|
|
var platform_dom$2 = {
|
|
/**
|
|
* When `true`, prevents the automatic injection of the stylesheet required to
|
|
* correctly detect when the chart is added to the DOM and then resized. This
|
|
* switch has been added to allow external stylesheet (`dist/Chart(.min)?.js`)
|
|
* to be manually imported to make this library compatible with any CSP.
|
|
* See https://github.com/chartjs/Chart.js/issues/5208
|
|
*/
|
|
disableCSSInjection: false,
|
|
|
|
/**
|
|
* This property holds whether this platform is enabled for the current environment.
|
|
* Currently used by platform.js to select the proper implementation.
|
|
* @private
|
|
*/
|
|
_enabled: typeof window !== 'undefined' && typeof document !== 'undefined',
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_ensureLoaded: function() {
|
|
if (this._loaded) {
|
|
return;
|
|
}
|
|
|
|
this._loaded = true;
|
|
|
|
// https://github.com/chartjs/Chart.js/issues/5208
|
|
if (!this.disableCSSInjection) {
|
|
injectCSS(this, stylesheet);
|
|
}
|
|
},
|
|
|
|
acquireContext: function(item, config) {
|
|
if (typeof item === 'string') {
|
|
item = document.getElementById(item);
|
|
} else if (item.length) {
|
|
// Support for array based queries (such as jQuery)
|
|
item = item[0];
|
|
}
|
|
|
|
if (item && item.canvas) {
|
|
// Support for any object associated to a canvas (including a context2d)
|
|
item = item.canvas;
|
|
}
|
|
|
|
// To prevent canvas fingerprinting, some add-ons undefine the getContext
|
|
// method, for example: https://github.com/kkapsner/CanvasBlocker
|
|
// https://github.com/chartjs/Chart.js/issues/2807
|
|
var context = item && item.getContext && item.getContext('2d');
|
|
|
|
// Load platform resources on first chart creation, to make possible to change
|
|
// platform options after importing the library (e.g. `disableCSSInjection`).
|
|
this._ensureLoaded();
|
|
|
|
// `instanceof HTMLCanvasElement/CanvasRenderingContext2D` fails when the item is
|
|
// inside an iframe or when running in a protected environment. We could guess the
|
|
// types from their toString() value but let's keep things flexible and assume it's
|
|
// a sufficient condition if the item has a context2D which has item as `canvas`.
|
|
// https://github.com/chartjs/Chart.js/issues/3887
|
|
// https://github.com/chartjs/Chart.js/issues/4102
|
|
// https://github.com/chartjs/Chart.js/issues/4152
|
|
if (context && context.canvas === item) {
|
|
initCanvas(item, config);
|
|
return context;
|
|
}
|
|
|
|
return null;
|
|
},
|
|
|
|
releaseContext: function(context) {
|
|
var canvas = context.canvas;
|
|
if (!canvas[EXPANDO_KEY]) {
|
|
return;
|
|
}
|
|
|
|
var initial = canvas[EXPANDO_KEY].initial;
|
|
['height', 'width'].forEach(function(prop) {
|
|
var value = initial[prop];
|
|
if (helpers$1.isNullOrUndef(value)) {
|
|
canvas.removeAttribute(prop);
|
|
} else {
|
|
canvas.setAttribute(prop, value);
|
|
}
|
|
});
|
|
|
|
helpers$1.each(initial.style || {}, function(value, key) {
|
|
canvas.style[key] = value;
|
|
});
|
|
|
|
// The canvas render size might have been changed (and thus the state stack discarded),
|
|
// we can't use save() and restore() to restore the initial state. So make sure that at
|
|
// least the canvas context is reset to the default state by setting the canvas width.
|
|
// https://www.w3.org/TR/2011/WD-html5-20110525/the-canvas-element.html
|
|
// eslint-disable-next-line no-self-assign
|
|
canvas.width = canvas.width;
|
|
|
|
delete canvas[EXPANDO_KEY];
|
|
},
|
|
|
|
addEventListener: function(chart, type, listener) {
|
|
var canvas = chart.canvas;
|
|
if (type === 'resize') {
|
|
// Note: the resize event is not supported on all browsers.
|
|
addResizeListener(canvas, listener, chart);
|
|
return;
|
|
}
|
|
|
|
var expando = listener[EXPANDO_KEY] || (listener[EXPANDO_KEY] = {});
|
|
var proxies = expando.proxies || (expando.proxies = {});
|
|
var proxy = proxies[chart.id + '_' + type] = function(event) {
|
|
listener(fromNativeEvent(event, chart));
|
|
};
|
|
|
|
addListener(canvas, type, proxy);
|
|
},
|
|
|
|
removeEventListener: function(chart, type, listener) {
|
|
var canvas = chart.canvas;
|
|
if (type === 'resize') {
|
|
// Note: the resize event is not supported on all browsers.
|
|
removeResizeListener(canvas);
|
|
return;
|
|
}
|
|
|
|
var expando = listener[EXPANDO_KEY] || {};
|
|
var proxies = expando.proxies || {};
|
|
var proxy = proxies[chart.id + '_' + type];
|
|
if (!proxy) {
|
|
return;
|
|
}
|
|
|
|
removeListener(canvas, type, proxy);
|
|
}
|
|
};
|
|
|
|
// DEPRECATIONS
|
|
|
|
/**
|
|
* Provided for backward compatibility, use EventTarget.addEventListener instead.
|
|
* EventTarget.addEventListener compatibility: Chrome, Opera 7, Safari, FF1.5+, IE9+
|
|
* @see https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/addEventListener
|
|
* @function Chart.helpers.addEvent
|
|
* @deprecated since version 2.7.0
|
|
* @todo remove at version 3
|
|
* @private
|
|
*/
|
|
helpers$1.addEvent = addListener;
|
|
|
|
/**
|
|
* Provided for backward compatibility, use EventTarget.removeEventListener instead.
|
|
* EventTarget.removeEventListener compatibility: Chrome, Opera 7, Safari, FF1.5+, IE9+
|
|
* @see https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/removeEventListener
|
|
* @function Chart.helpers.removeEvent
|
|
* @deprecated since version 2.7.0
|
|
* @todo remove at version 3
|
|
* @private
|
|
*/
|
|
helpers$1.removeEvent = removeListener;
|
|
|
|
// @TODO Make possible to select another platform at build time.
|
|
var implementation = platform_dom$2._enabled ? platform_dom$2 : platform_basic;
|
|
|
|
/**
|
|
* @namespace Chart.platform
|
|
* @see https://chartjs.gitbooks.io/proposals/content/Platform.html
|
|
* @since 2.4.0
|
|
*/
|
|
var platform = helpers$1.extend({
|
|
/**
|
|
* @since 2.7.0
|
|
*/
|
|
initialize: function() {},
|
|
|
|
/**
|
|
* Called at chart construction time, returns a context2d instance implementing
|
|
* the [W3C Canvas 2D Context API standard]{@link https://www.w3.org/TR/2dcontext/}.
|
|
* @param {*} item - The native item from which to acquire context (platform specific)
|
|
* @param {object} options - The chart options
|
|
* @returns {CanvasRenderingContext2D} context2d instance
|
|
*/
|
|
acquireContext: function() {},
|
|
|
|
/**
|
|
* Called at chart destruction time, releases any resources associated to the context
|
|
* previously returned by the acquireContext() method.
|
|
* @param {CanvasRenderingContext2D} context - The context2d instance
|
|
* @returns {boolean} true if the method succeeded, else false
|
|
*/
|
|
releaseContext: function() {},
|
|
|
|
/**
|
|
* Registers the specified listener on the given chart.
|
|
* @param {Chart} chart - Chart from which to listen for event
|
|
* @param {string} type - The ({@link IEvent}) type to listen for
|
|
* @param {function} listener - Receives a notification (an object that implements
|
|
* the {@link IEvent} interface) when an event of the specified type occurs.
|
|
*/
|
|
addEventListener: function() {},
|
|
|
|
/**
|
|
* Removes the specified listener previously registered with addEventListener.
|
|
* @param {Chart} chart - Chart from which to remove the listener
|
|
* @param {string} type - The ({@link IEvent}) type to remove
|
|
* @param {function} listener - The listener function to remove from the event target.
|
|
*/
|
|
removeEventListener: function() {}
|
|
|
|
}, implementation);
|
|
|
|
core_defaults._set('global', {
|
|
plugins: {}
|
|
});
|
|
|
|
/**
|
|
* The plugin service singleton
|
|
* @namespace Chart.plugins
|
|
* @since 2.1.0
|
|
*/
|
|
var core_plugins = {
|
|
/**
|
|
* Globally registered plugins.
|
|
* @private
|
|
*/
|
|
_plugins: [],
|
|
|
|
/**
|
|
* This identifier is used to invalidate the descriptors cache attached to each chart
|
|
* when a global plugin is registered or unregistered. In this case, the cache ID is
|
|
* incremented and descriptors are regenerated during following API calls.
|
|
* @private
|
|
*/
|
|
_cacheId: 0,
|
|
|
|
/**
|
|
* Registers the given plugin(s) if not already registered.
|
|
* @param {IPlugin[]|IPlugin} plugins plugin instance(s).
|
|
*/
|
|
register: function(plugins) {
|
|
var p = this._plugins;
|
|
([]).concat(plugins).forEach(function(plugin) {
|
|
if (p.indexOf(plugin) === -1) {
|
|
p.push(plugin);
|
|
}
|
|
});
|
|
|
|
this._cacheId++;
|
|
},
|
|
|
|
/**
|
|
* Unregisters the given plugin(s) only if registered.
|
|
* @param {IPlugin[]|IPlugin} plugins plugin instance(s).
|
|
*/
|
|
unregister: function(plugins) {
|
|
var p = this._plugins;
|
|
([]).concat(plugins).forEach(function(plugin) {
|
|
var idx = p.indexOf(plugin);
|
|
if (idx !== -1) {
|
|
p.splice(idx, 1);
|
|
}
|
|
});
|
|
|
|
this._cacheId++;
|
|
},
|
|
|
|
/**
|
|
* Remove all registered plugins.
|
|
* @since 2.1.5
|
|
*/
|
|
clear: function() {
|
|
this._plugins = [];
|
|
this._cacheId++;
|
|
},
|
|
|
|
/**
|
|
* Returns the number of registered plugins?
|
|
* @returns {number}
|
|
* @since 2.1.5
|
|
*/
|
|
count: function() {
|
|
return this._plugins.length;
|
|
},
|
|
|
|
/**
|
|
* Returns all registered plugin instances.
|
|
* @returns {IPlugin[]} array of plugin objects.
|
|
* @since 2.1.5
|
|
*/
|
|
getAll: function() {
|
|
return this._plugins;
|
|
},
|
|
|
|
/**
|
|
* Calls enabled plugins for `chart` on the specified hook and with the given args.
|
|
* This method immediately returns as soon as a plugin explicitly returns false. The
|
|
* returned value can be used, for instance, to interrupt the current action.
|
|
* @param {Chart} chart - The chart instance for which plugins should be called.
|
|
* @param {string} hook - The name of the plugin method to call (e.g. 'beforeUpdate').
|
|
* @param {Array} [args] - Extra arguments to apply to the hook call.
|
|
* @returns {boolean} false if any of the plugins return false, else returns true.
|
|
*/
|
|
notify: function(chart, hook, args) {
|
|
var descriptors = this.descriptors(chart);
|
|
var ilen = descriptors.length;
|
|
var i, descriptor, plugin, params, method;
|
|
|
|
for (i = 0; i < ilen; ++i) {
|
|
descriptor = descriptors[i];
|
|
plugin = descriptor.plugin;
|
|
method = plugin[hook];
|
|
if (typeof method === 'function') {
|
|
params = [chart].concat(args || []);
|
|
params.push(descriptor.options);
|
|
if (method.apply(plugin, params) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
return true;
|
|
},
|
|
|
|
/**
|
|
* Returns descriptors of enabled plugins for the given chart.
|
|
* @returns {object[]} [{ plugin, options }]
|
|
* @private
|
|
*/
|
|
descriptors: function(chart) {
|
|
var cache = chart.$plugins || (chart.$plugins = {});
|
|
if (cache.id === this._cacheId) {
|
|
return cache.descriptors;
|
|
}
|
|
|
|
var plugins = [];
|
|
var descriptors = [];
|
|
var config = (chart && chart.config) || {};
|
|
var options = (config.options && config.options.plugins) || {};
|
|
|
|
this._plugins.concat(config.plugins || []).forEach(function(plugin) {
|
|
var idx = plugins.indexOf(plugin);
|
|
if (idx !== -1) {
|
|
return;
|
|
}
|
|
|
|
var id = plugin.id;
|
|
var opts = options[id];
|
|
if (opts === false) {
|
|
return;
|
|
}
|
|
|
|
if (opts === true) {
|
|
opts = helpers$1.clone(core_defaults.global.plugins[id]);
|
|
}
|
|
|
|
plugins.push(plugin);
|
|
descriptors.push({
|
|
plugin: plugin,
|
|
options: opts || {}
|
|
});
|
|
});
|
|
|
|
cache.descriptors = descriptors;
|
|
cache.id = this._cacheId;
|
|
return descriptors;
|
|
},
|
|
|
|
/**
|
|
* Invalidates cache for the given chart: descriptors hold a reference on plugin option,
|
|
* but in some cases, this reference can be changed by the user when updating options.
|
|
* https://github.com/chartjs/Chart.js/issues/5111#issuecomment-355934167
|
|
* @private
|
|
*/
|
|
_invalidate: function(chart) {
|
|
delete chart.$plugins;
|
|
}
|
|
};
|
|
|
|
var core_scaleService = {
|
|
// Scale registration object. Extensions can register new scale types (such as log or DB scales) and then
|
|
// use the new chart options to grab the correct scale
|
|
constructors: {},
|
|
// Use a registration function so that we can move to an ES6 map when we no longer need to support
|
|
// old browsers
|
|
|
|
// Scale config defaults
|
|
defaults: {},
|
|
registerScaleType: function(type, scaleConstructor, scaleDefaults) {
|
|
this.constructors[type] = scaleConstructor;
|
|
this.defaults[type] = helpers$1.clone(scaleDefaults);
|
|
},
|
|
getScaleConstructor: function(type) {
|
|
return this.constructors.hasOwnProperty(type) ? this.constructors[type] : undefined;
|
|
},
|
|
getScaleDefaults: function(type) {
|
|
// Return the scale defaults merged with the global settings so that we always use the latest ones
|
|
return this.defaults.hasOwnProperty(type) ? helpers$1.merge({}, [core_defaults.scale, this.defaults[type]]) : {};
|
|
},
|
|
updateScaleDefaults: function(type, additions) {
|
|
var me = this;
|
|
if (me.defaults.hasOwnProperty(type)) {
|
|
me.defaults[type] = helpers$1.extend(me.defaults[type], additions);
|
|
}
|
|
},
|
|
addScalesToLayout: function(chart) {
|
|
// Adds each scale to the chart.boxes array to be sized accordingly
|
|
helpers$1.each(chart.scales, function(scale) {
|
|
// Set ILayoutItem parameters for backwards compatibility
|
|
scale.fullWidth = scale.options.fullWidth;
|
|
scale.position = scale.options.position;
|
|
scale.weight = scale.options.weight;
|
|
core_layouts.addBox(chart, scale);
|
|
});
|
|
}
|
|
};
|
|
|
|
var valueOrDefault$7 = helpers$1.valueOrDefault;
|
|
|
|
core_defaults._set('global', {
|
|
tooltips: {
|
|
enabled: true,
|
|
custom: null,
|
|
mode: 'nearest',
|
|
position: 'average',
|
|
intersect: true,
|
|
backgroundColor: 'rgba(0,0,0,0.8)',
|
|
titleFontStyle: 'bold',
|
|
titleSpacing: 2,
|
|
titleMarginBottom: 6,
|
|
titleFontColor: '#fff',
|
|
titleAlign: 'left',
|
|
bodySpacing: 2,
|
|
bodyFontColor: '#fff',
|
|
bodyAlign: 'left',
|
|
footerFontStyle: 'bold',
|
|
footerSpacing: 2,
|
|
footerMarginTop: 6,
|
|
footerFontColor: '#fff',
|
|
footerAlign: 'left',
|
|
yPadding: 6,
|
|
xPadding: 6,
|
|
caretPadding: 2,
|
|
caretSize: 5,
|
|
cornerRadius: 6,
|
|
multiKeyBackground: '#fff',
|
|
displayColors: true,
|
|
borderColor: 'rgba(0,0,0,0)',
|
|
borderWidth: 0,
|
|
callbacks: {
|
|
// Args are: (tooltipItems, data)
|
|
beforeTitle: helpers$1.noop,
|
|
title: function(tooltipItems, data) {
|
|
var title = '';
|
|
var labels = data.labels;
|
|
var labelCount = labels ? labels.length : 0;
|
|
|
|
if (tooltipItems.length > 0) {
|
|
var item = tooltipItems[0];
|
|
if (item.label) {
|
|
title = item.label;
|
|
} else if (item.xLabel) {
|
|
title = item.xLabel;
|
|
} else if (labelCount > 0 && item.index < labelCount) {
|
|
title = labels[item.index];
|
|
}
|
|
}
|
|
|
|
return title;
|
|
},
|
|
afterTitle: helpers$1.noop,
|
|
|
|
// Args are: (tooltipItems, data)
|
|
beforeBody: helpers$1.noop,
|
|
|
|
// Args are: (tooltipItem, data)
|
|
beforeLabel: helpers$1.noop,
|
|
label: function(tooltipItem, data) {
|
|
var label = data.datasets[tooltipItem.datasetIndex].label || '';
|
|
|
|
if (label) {
|
|
label += ': ';
|
|
}
|
|
if (!helpers$1.isNullOrUndef(tooltipItem.value)) {
|
|
label += tooltipItem.value;
|
|
} else {
|
|
label += tooltipItem.yLabel;
|
|
}
|
|
return label;
|
|
},
|
|
labelColor: function(tooltipItem, chart) {
|
|
var meta = chart.getDatasetMeta(tooltipItem.datasetIndex);
|
|
var activeElement = meta.data[tooltipItem.index];
|
|
var view = activeElement._view;
|
|
return {
|
|
borderColor: view.borderColor,
|
|
backgroundColor: view.backgroundColor
|
|
};
|
|
},
|
|
labelTextColor: function() {
|
|
return this._options.bodyFontColor;
|
|
},
|
|
afterLabel: helpers$1.noop,
|
|
|
|
// Args are: (tooltipItems, data)
|
|
afterBody: helpers$1.noop,
|
|
|
|
// Args are: (tooltipItems, data)
|
|
beforeFooter: helpers$1.noop,
|
|
footer: helpers$1.noop,
|
|
afterFooter: helpers$1.noop
|
|
}
|
|
}
|
|
});
|
|
|
|
var positioners = {
|
|
/**
|
|
* Average mode places the tooltip at the average position of the elements shown
|
|
* @function Chart.Tooltip.positioners.average
|
|
* @param elements {ChartElement[]} the elements being displayed in the tooltip
|
|
* @returns {object} tooltip position
|
|
*/
|
|
average: function(elements) {
|
|
if (!elements.length) {
|
|
return false;
|
|
}
|
|
|
|
var i, len;
|
|
var x = 0;
|
|
var y = 0;
|
|
var count = 0;
|
|
|
|
for (i = 0, len = elements.length; i < len; ++i) {
|
|
var el = elements[i];
|
|
if (el && el.hasValue()) {
|
|
var pos = el.tooltipPosition();
|
|
x += pos.x;
|
|
y += pos.y;
|
|
++count;
|
|
}
|
|
}
|
|
|
|
return {
|
|
x: x / count,
|
|
y: y / count
|
|
};
|
|
},
|
|
|
|
/**
|
|
* Gets the tooltip position nearest of the item nearest to the event position
|
|
* @function Chart.Tooltip.positioners.nearest
|
|
* @param elements {Chart.Element[]} the tooltip elements
|
|
* @param eventPosition {object} the position of the event in canvas coordinates
|
|
* @returns {object} the tooltip position
|
|
*/
|
|
nearest: function(elements, eventPosition) {
|
|
var x = eventPosition.x;
|
|
var y = eventPosition.y;
|
|
var minDistance = Number.POSITIVE_INFINITY;
|
|
var i, len, nearestElement;
|
|
|
|
for (i = 0, len = elements.length; i < len; ++i) {
|
|
var el = elements[i];
|
|
if (el && el.hasValue()) {
|
|
var center = el.getCenterPoint();
|
|
var d = helpers$1.distanceBetweenPoints(eventPosition, center);
|
|
|
|
if (d < minDistance) {
|
|
minDistance = d;
|
|
nearestElement = el;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (nearestElement) {
|
|
var tp = nearestElement.tooltipPosition();
|
|
x = tp.x;
|
|
y = tp.y;
|
|
}
|
|
|
|
return {
|
|
x: x,
|
|
y: y
|
|
};
|
|
}
|
|
};
|
|
|
|
// Helper to push or concat based on if the 2nd parameter is an array or not
|
|
function pushOrConcat(base, toPush) {
|
|
if (toPush) {
|
|
if (helpers$1.isArray(toPush)) {
|
|
// base = base.concat(toPush);
|
|
Array.prototype.push.apply(base, toPush);
|
|
} else {
|
|
base.push(toPush);
|
|
}
|
|
}
|
|
|
|
return base;
|
|
}
|
|
|
|
/**
|
|
* Returns array of strings split by newline
|
|
* @param {string} value - The value to split by newline.
|
|
* @returns {string[]} value if newline present - Returned from String split() method
|
|
* @function
|
|
*/
|
|
function splitNewlines(str) {
|
|
if ((typeof str === 'string' || str instanceof String) && str.indexOf('\n') > -1) {
|
|
return str.split('\n');
|
|
}
|
|
return str;
|
|
}
|
|
|
|
|
|
/**
|
|
* Private helper to create a tooltip item model
|
|
* @param element - the chart element (point, arc, bar) to create the tooltip item for
|
|
* @return new tooltip item
|
|
*/
|
|
function createTooltipItem(element) {
|
|
var xScale = element._xScale;
|
|
var yScale = element._yScale || element._scale; // handle radar || polarArea charts
|
|
var index = element._index;
|
|
var datasetIndex = element._datasetIndex;
|
|
var controller = element._chart.getDatasetMeta(datasetIndex).controller;
|
|
var indexScale = controller._getIndexScale();
|
|
var valueScale = controller._getValueScale();
|
|
|
|
return {
|
|
xLabel: xScale ? xScale.getLabelForIndex(index, datasetIndex) : '',
|
|
yLabel: yScale ? yScale.getLabelForIndex(index, datasetIndex) : '',
|
|
label: indexScale ? '' + indexScale.getLabelForIndex(index, datasetIndex) : '',
|
|
value: valueScale ? '' + valueScale.getLabelForIndex(index, datasetIndex) : '',
|
|
index: index,
|
|
datasetIndex: datasetIndex,
|
|
x: element._model.x,
|
|
y: element._model.y
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Helper to get the reset model for the tooltip
|
|
* @param tooltipOpts {object} the tooltip options
|
|
*/
|
|
function getBaseModel(tooltipOpts) {
|
|
var globalDefaults = core_defaults.global;
|
|
|
|
return {
|
|
// Positioning
|
|
xPadding: tooltipOpts.xPadding,
|
|
yPadding: tooltipOpts.yPadding,
|
|
xAlign: tooltipOpts.xAlign,
|
|
yAlign: tooltipOpts.yAlign,
|
|
|
|
// Body
|
|
bodyFontColor: tooltipOpts.bodyFontColor,
|
|
_bodyFontFamily: valueOrDefault$7(tooltipOpts.bodyFontFamily, globalDefaults.defaultFontFamily),
|
|
_bodyFontStyle: valueOrDefault$7(tooltipOpts.bodyFontStyle, globalDefaults.defaultFontStyle),
|
|
_bodyAlign: tooltipOpts.bodyAlign,
|
|
bodyFontSize: valueOrDefault$7(tooltipOpts.bodyFontSize, globalDefaults.defaultFontSize),
|
|
bodySpacing: tooltipOpts.bodySpacing,
|
|
|
|
// Title
|
|
titleFontColor: tooltipOpts.titleFontColor,
|
|
_titleFontFamily: valueOrDefault$7(tooltipOpts.titleFontFamily, globalDefaults.defaultFontFamily),
|
|
_titleFontStyle: valueOrDefault$7(tooltipOpts.titleFontStyle, globalDefaults.defaultFontStyle),
|
|
titleFontSize: valueOrDefault$7(tooltipOpts.titleFontSize, globalDefaults.defaultFontSize),
|
|
_titleAlign: tooltipOpts.titleAlign,
|
|
titleSpacing: tooltipOpts.titleSpacing,
|
|
titleMarginBottom: tooltipOpts.titleMarginBottom,
|
|
|
|
// Footer
|
|
footerFontColor: tooltipOpts.footerFontColor,
|
|
_footerFontFamily: valueOrDefault$7(tooltipOpts.footerFontFamily, globalDefaults.defaultFontFamily),
|
|
_footerFontStyle: valueOrDefault$7(tooltipOpts.footerFontStyle, globalDefaults.defaultFontStyle),
|
|
footerFontSize: valueOrDefault$7(tooltipOpts.footerFontSize, globalDefaults.defaultFontSize),
|
|
_footerAlign: tooltipOpts.footerAlign,
|
|
footerSpacing: tooltipOpts.footerSpacing,
|
|
footerMarginTop: tooltipOpts.footerMarginTop,
|
|
|
|
// Appearance
|
|
caretSize: tooltipOpts.caretSize,
|
|
cornerRadius: tooltipOpts.cornerRadius,
|
|
backgroundColor: tooltipOpts.backgroundColor,
|
|
opacity: 0,
|
|
legendColorBackground: tooltipOpts.multiKeyBackground,
|
|
displayColors: tooltipOpts.displayColors,
|
|
borderColor: tooltipOpts.borderColor,
|
|
borderWidth: tooltipOpts.borderWidth
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Get the size of the tooltip
|
|
*/
|
|
function getTooltipSize(tooltip, model) {
|
|
var ctx = tooltip._chart.ctx;
|
|
|
|
var height = model.yPadding * 2; // Tooltip Padding
|
|
var width = 0;
|
|
|
|
// Count of all lines in the body
|
|
var body = model.body;
|
|
var combinedBodyLength = body.reduce(function(count, bodyItem) {
|
|
return count + bodyItem.before.length + bodyItem.lines.length + bodyItem.after.length;
|
|
}, 0);
|
|
combinedBodyLength += model.beforeBody.length + model.afterBody.length;
|
|
|
|
var titleLineCount = model.title.length;
|
|
var footerLineCount = model.footer.length;
|
|
var titleFontSize = model.titleFontSize;
|
|
var bodyFontSize = model.bodyFontSize;
|
|
var footerFontSize = model.footerFontSize;
|
|
|
|
height += titleLineCount * titleFontSize; // Title Lines
|
|
height += titleLineCount ? (titleLineCount - 1) * model.titleSpacing : 0; // Title Line Spacing
|
|
height += titleLineCount ? model.titleMarginBottom : 0; // Title's bottom Margin
|
|
height += combinedBodyLength * bodyFontSize; // Body Lines
|
|
height += combinedBodyLength ? (combinedBodyLength - 1) * model.bodySpacing : 0; // Body Line Spacing
|
|
height += footerLineCount ? model.footerMarginTop : 0; // Footer Margin
|
|
height += footerLineCount * (footerFontSize); // Footer Lines
|
|
height += footerLineCount ? (footerLineCount - 1) * model.footerSpacing : 0; // Footer Line Spacing
|
|
|
|
// Title width
|
|
var widthPadding = 0;
|
|
var maxLineWidth = function(line) {
|
|
width = Math.max(width, ctx.measureText(line).width + widthPadding);
|
|
};
|
|
|
|
ctx.font = helpers$1.fontString(titleFontSize, model._titleFontStyle, model._titleFontFamily);
|
|
helpers$1.each(model.title, maxLineWidth);
|
|
|
|
// Body width
|
|
ctx.font = helpers$1.fontString(bodyFontSize, model._bodyFontStyle, model._bodyFontFamily);
|
|
helpers$1.each(model.beforeBody.concat(model.afterBody), maxLineWidth);
|
|
|
|
// Body lines may include some extra width due to the color box
|
|
widthPadding = model.displayColors ? (bodyFontSize + 2) : 0;
|
|
helpers$1.each(body, function(bodyItem) {
|
|
helpers$1.each(bodyItem.before, maxLineWidth);
|
|
helpers$1.each(bodyItem.lines, maxLineWidth);
|
|
helpers$1.each(bodyItem.after, maxLineWidth);
|
|
});
|
|
|
|
// Reset back to 0
|
|
widthPadding = 0;
|
|
|
|
// Footer width
|
|
ctx.font = helpers$1.fontString(footerFontSize, model._footerFontStyle, model._footerFontFamily);
|
|
helpers$1.each(model.footer, maxLineWidth);
|
|
|
|
// Add padding
|
|
width += 2 * model.xPadding;
|
|
|
|
return {
|
|
width: width,
|
|
height: height
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Helper to get the alignment of a tooltip given the size
|
|
*/
|
|
function determineAlignment(tooltip, size) {
|
|
var model = tooltip._model;
|
|
var chart = tooltip._chart;
|
|
var chartArea = tooltip._chart.chartArea;
|
|
var xAlign = 'center';
|
|
var yAlign = 'center';
|
|
|
|
if (model.y < size.height) {
|
|
yAlign = 'top';
|
|
} else if (model.y > (chart.height - size.height)) {
|
|
yAlign = 'bottom';
|
|
}
|
|
|
|
var lf, rf; // functions to determine left, right alignment
|
|
var olf, orf; // functions to determine if left/right alignment causes tooltip to go outside chart
|
|
var yf; // function to get the y alignment if the tooltip goes outside of the left or right edges
|
|
var midX = (chartArea.left + chartArea.right) / 2;
|
|
var midY = (chartArea.top + chartArea.bottom) / 2;
|
|
|
|
if (yAlign === 'center') {
|
|
lf = function(x) {
|
|
return x <= midX;
|
|
};
|
|
rf = function(x) {
|
|
return x > midX;
|
|
};
|
|
} else {
|
|
lf = function(x) {
|
|
return x <= (size.width / 2);
|
|
};
|
|
rf = function(x) {
|
|
return x >= (chart.width - (size.width / 2));
|
|
};
|
|
}
|
|
|
|
olf = function(x) {
|
|
return x + size.width + model.caretSize + model.caretPadding > chart.width;
|
|
};
|
|
orf = function(x) {
|
|
return x - size.width - model.caretSize - model.caretPadding < 0;
|
|
};
|
|
yf = function(y) {
|
|
return y <= midY ? 'top' : 'bottom';
|
|
};
|
|
|
|
if (lf(model.x)) {
|
|
xAlign = 'left';
|
|
|
|
// Is tooltip too wide and goes over the right side of the chart.?
|
|
if (olf(model.x)) {
|
|
xAlign = 'center';
|
|
yAlign = yf(model.y);
|
|
}
|
|
} else if (rf(model.x)) {
|
|
xAlign = 'right';
|
|
|
|
// Is tooltip too wide and goes outside left edge of canvas?
|
|
if (orf(model.x)) {
|
|
xAlign = 'center';
|
|
yAlign = yf(model.y);
|
|
}
|
|
}
|
|
|
|
var opts = tooltip._options;
|
|
return {
|
|
xAlign: opts.xAlign ? opts.xAlign : xAlign,
|
|
yAlign: opts.yAlign ? opts.yAlign : yAlign
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Helper to get the location a tooltip needs to be placed at given the initial position (via the vm) and the size and alignment
|
|
*/
|
|
function getBackgroundPoint(vm, size, alignment, chart) {
|
|
// Background Position
|
|
var x = vm.x;
|
|
var y = vm.y;
|
|
|
|
var caretSize = vm.caretSize;
|
|
var caretPadding = vm.caretPadding;
|
|
var cornerRadius = vm.cornerRadius;
|
|
var xAlign = alignment.xAlign;
|
|
var yAlign = alignment.yAlign;
|
|
var paddingAndSize = caretSize + caretPadding;
|
|
var radiusAndPadding = cornerRadius + caretPadding;
|
|
|
|
if (xAlign === 'right') {
|
|
x -= size.width;
|
|
} else if (xAlign === 'center') {
|
|
x -= (size.width / 2);
|
|
if (x + size.width > chart.width) {
|
|
x = chart.width - size.width;
|
|
}
|
|
if (x < 0) {
|
|
x = 0;
|
|
}
|
|
}
|
|
|
|
if (yAlign === 'top') {
|
|
y += paddingAndSize;
|
|
} else if (yAlign === 'bottom') {
|
|
y -= size.height + paddingAndSize;
|
|
} else {
|
|
y -= (size.height / 2);
|
|
}
|
|
|
|
if (yAlign === 'center') {
|
|
if (xAlign === 'left') {
|
|
x += paddingAndSize;
|
|
} else if (xAlign === 'right') {
|
|
x -= paddingAndSize;
|
|
}
|
|
} else if (xAlign === 'left') {
|
|
x -= radiusAndPadding;
|
|
} else if (xAlign === 'right') {
|
|
x += radiusAndPadding;
|
|
}
|
|
|
|
return {
|
|
x: x,
|
|
y: y
|
|
};
|
|
}
|
|
|
|
function getAlignedX(vm, align) {
|
|
return align === 'center'
|
|
? vm.x + vm.width / 2
|
|
: align === 'right'
|
|
? vm.x + vm.width - vm.xPadding
|
|
: vm.x + vm.xPadding;
|
|
}
|
|
|
|
/**
|
|
* Helper to build before and after body lines
|
|
*/
|
|
function getBeforeAfterBodyLines(callback) {
|
|
return pushOrConcat([], splitNewlines(callback));
|
|
}
|
|
|
|
var exports$3 = core_element.extend({
|
|
initialize: function() {
|
|
this._model = getBaseModel(this._options);
|
|
this._lastActive = [];
|
|
},
|
|
|
|
// Get the title
|
|
// Args are: (tooltipItem, data)
|
|
getTitle: function() {
|
|
var me = this;
|
|
var opts = me._options;
|
|
var callbacks = opts.callbacks;
|
|
|
|
var beforeTitle = callbacks.beforeTitle.apply(me, arguments);
|
|
var title = callbacks.title.apply(me, arguments);
|
|
var afterTitle = callbacks.afterTitle.apply(me, arguments);
|
|
|
|
var lines = [];
|
|
lines = pushOrConcat(lines, splitNewlines(beforeTitle));
|
|
lines = pushOrConcat(lines, splitNewlines(title));
|
|
lines = pushOrConcat(lines, splitNewlines(afterTitle));
|
|
|
|
return lines;
|
|
},
|
|
|
|
// Args are: (tooltipItem, data)
|
|
getBeforeBody: function() {
|
|
return getBeforeAfterBodyLines(this._options.callbacks.beforeBody.apply(this, arguments));
|
|
},
|
|
|
|
// Args are: (tooltipItem, data)
|
|
getBody: function(tooltipItems, data) {
|
|
var me = this;
|
|
var callbacks = me._options.callbacks;
|
|
var bodyItems = [];
|
|
|
|
helpers$1.each(tooltipItems, function(tooltipItem) {
|
|
var bodyItem = {
|
|
before: [],
|
|
lines: [],
|
|
after: []
|
|
};
|
|
pushOrConcat(bodyItem.before, splitNewlines(callbacks.beforeLabel.call(me, tooltipItem, data)));
|
|
pushOrConcat(bodyItem.lines, callbacks.label.call(me, tooltipItem, data));
|
|
pushOrConcat(bodyItem.after, splitNewlines(callbacks.afterLabel.call(me, tooltipItem, data)));
|
|
|
|
bodyItems.push(bodyItem);
|
|
});
|
|
|
|
return bodyItems;
|
|
},
|
|
|
|
// Args are: (tooltipItem, data)
|
|
getAfterBody: function() {
|
|
return getBeforeAfterBodyLines(this._options.callbacks.afterBody.apply(this, arguments));
|
|
},
|
|
|
|
// Get the footer and beforeFooter and afterFooter lines
|
|
// Args are: (tooltipItem, data)
|
|
getFooter: function() {
|
|
var me = this;
|
|
var callbacks = me._options.callbacks;
|
|
|
|
var beforeFooter = callbacks.beforeFooter.apply(me, arguments);
|
|
var footer = callbacks.footer.apply(me, arguments);
|
|
var afterFooter = callbacks.afterFooter.apply(me, arguments);
|
|
|
|
var lines = [];
|
|
lines = pushOrConcat(lines, splitNewlines(beforeFooter));
|
|
lines = pushOrConcat(lines, splitNewlines(footer));
|
|
lines = pushOrConcat(lines, splitNewlines(afterFooter));
|
|
|
|
return lines;
|
|
},
|
|
|
|
update: function(changed) {
|
|
var me = this;
|
|
var opts = me._options;
|
|
|
|
// Need to regenerate the model because its faster than using extend and it is necessary due to the optimization in Chart.Element.transition
|
|
// that does _view = _model if ease === 1. This causes the 2nd tooltip update to set properties in both the view and model at the same time
|
|
// which breaks any animations.
|
|
var existingModel = me._model;
|
|
var model = me._model = getBaseModel(opts);
|
|
var active = me._active;
|
|
|
|
var data = me._data;
|
|
|
|
// In the case where active.length === 0 we need to keep these at existing values for good animations
|
|
var alignment = {
|
|
xAlign: existingModel.xAlign,
|
|
yAlign: existingModel.yAlign
|
|
};
|
|
var backgroundPoint = {
|
|
x: existingModel.x,
|
|
y: existingModel.y
|
|
};
|
|
var tooltipSize = {
|
|
width: existingModel.width,
|
|
height: existingModel.height
|
|
};
|
|
var tooltipPosition = {
|
|
x: existingModel.caretX,
|
|
y: existingModel.caretY
|
|
};
|
|
|
|
var i, len;
|
|
|
|
if (active.length) {
|
|
model.opacity = 1;
|
|
|
|
var labelColors = [];
|
|
var labelTextColors = [];
|
|
tooltipPosition = positioners[opts.position].call(me, active, me._eventPosition);
|
|
|
|
var tooltipItems = [];
|
|
for (i = 0, len = active.length; i < len; ++i) {
|
|
tooltipItems.push(createTooltipItem(active[i]));
|
|
}
|
|
|
|
// If the user provided a filter function, use it to modify the tooltip items
|
|
if (opts.filter) {
|
|
tooltipItems = tooltipItems.filter(function(a) {
|
|
return opts.filter(a, data);
|
|
});
|
|
}
|
|
|
|
// If the user provided a sorting function, use it to modify the tooltip items
|
|
if (opts.itemSort) {
|
|
tooltipItems = tooltipItems.sort(function(a, b) {
|
|
return opts.itemSort(a, b, data);
|
|
});
|
|
}
|
|
|
|
// Determine colors for boxes
|
|
helpers$1.each(tooltipItems, function(tooltipItem) {
|
|
labelColors.push(opts.callbacks.labelColor.call(me, tooltipItem, me._chart));
|
|
labelTextColors.push(opts.callbacks.labelTextColor.call(me, tooltipItem, me._chart));
|
|
});
|
|
|
|
|
|
// Build the Text Lines
|
|
model.title = me.getTitle(tooltipItems, data);
|
|
model.beforeBody = me.getBeforeBody(tooltipItems, data);
|
|
model.body = me.getBody(tooltipItems, data);
|
|
model.afterBody = me.getAfterBody(tooltipItems, data);
|
|
model.footer = me.getFooter(tooltipItems, data);
|
|
|
|
// Initial positioning and colors
|
|
model.x = tooltipPosition.x;
|
|
model.y = tooltipPosition.y;
|
|
model.caretPadding = opts.caretPadding;
|
|
model.labelColors = labelColors;
|
|
model.labelTextColors = labelTextColors;
|
|
|
|
// data points
|
|
model.dataPoints = tooltipItems;
|
|
|
|
// We need to determine alignment of the tooltip
|
|
tooltipSize = getTooltipSize(this, model);
|
|
alignment = determineAlignment(this, tooltipSize);
|
|
// Final Size and Position
|
|
backgroundPoint = getBackgroundPoint(model, tooltipSize, alignment, me._chart);
|
|
} else {
|
|
model.opacity = 0;
|
|
}
|
|
|
|
model.xAlign = alignment.xAlign;
|
|
model.yAlign = alignment.yAlign;
|
|
model.x = backgroundPoint.x;
|
|
model.y = backgroundPoint.y;
|
|
model.width = tooltipSize.width;
|
|
model.height = tooltipSize.height;
|
|
|
|
// Point where the caret on the tooltip points to
|
|
model.caretX = tooltipPosition.x;
|
|
model.caretY = tooltipPosition.y;
|
|
|
|
me._model = model;
|
|
|
|
if (changed && opts.custom) {
|
|
opts.custom.call(me, model);
|
|
}
|
|
|
|
return me;
|
|
},
|
|
|
|
drawCaret: function(tooltipPoint, size) {
|
|
var ctx = this._chart.ctx;
|
|
var vm = this._view;
|
|
var caretPosition = this.getCaretPosition(tooltipPoint, size, vm);
|
|
|
|
ctx.lineTo(caretPosition.x1, caretPosition.y1);
|
|
ctx.lineTo(caretPosition.x2, caretPosition.y2);
|
|
ctx.lineTo(caretPosition.x3, caretPosition.y3);
|
|
},
|
|
getCaretPosition: function(tooltipPoint, size, vm) {
|
|
var x1, x2, x3, y1, y2, y3;
|
|
var caretSize = vm.caretSize;
|
|
var cornerRadius = vm.cornerRadius;
|
|
var xAlign = vm.xAlign;
|
|
var yAlign = vm.yAlign;
|
|
var ptX = tooltipPoint.x;
|
|
var ptY = tooltipPoint.y;
|
|
var width = size.width;
|
|
var height = size.height;
|
|
|
|
if (yAlign === 'center') {
|
|
y2 = ptY + (height / 2);
|
|
|
|
if (xAlign === 'left') {
|
|
x1 = ptX;
|
|
x2 = x1 - caretSize;
|
|
x3 = x1;
|
|
|
|
y1 = y2 + caretSize;
|
|
y3 = y2 - caretSize;
|
|
} else {
|
|
x1 = ptX + width;
|
|
x2 = x1 + caretSize;
|
|
x3 = x1;
|
|
|
|
y1 = y2 - caretSize;
|
|
y3 = y2 + caretSize;
|
|
}
|
|
} else {
|
|
if (xAlign === 'left') {
|
|
x2 = ptX + cornerRadius + (caretSize);
|
|
x1 = x2 - caretSize;
|
|
x3 = x2 + caretSize;
|
|
} else if (xAlign === 'right') {
|
|
x2 = ptX + width - cornerRadius - caretSize;
|
|
x1 = x2 - caretSize;
|
|
x3 = x2 + caretSize;
|
|
} else {
|
|
x2 = vm.caretX;
|
|
x1 = x2 - caretSize;
|
|
x3 = x2 + caretSize;
|
|
}
|
|
if (yAlign === 'top') {
|
|
y1 = ptY;
|
|
y2 = y1 - caretSize;
|
|
y3 = y1;
|
|
} else {
|
|
y1 = ptY + height;
|
|
y2 = y1 + caretSize;
|
|
y3 = y1;
|
|
// invert drawing order
|
|
var tmp = x3;
|
|
x3 = x1;
|
|
x1 = tmp;
|
|
}
|
|
}
|
|
return {x1: x1, x2: x2, x3: x3, y1: y1, y2: y2, y3: y3};
|
|
},
|
|
|
|
drawTitle: function(pt, vm, ctx) {
|
|
var title = vm.title;
|
|
|
|
if (title.length) {
|
|
pt.x = getAlignedX(vm, vm._titleAlign);
|
|
|
|
ctx.textAlign = vm._titleAlign;
|
|
ctx.textBaseline = 'top';
|
|
|
|
var titleFontSize = vm.titleFontSize;
|
|
var titleSpacing = vm.titleSpacing;
|
|
|
|
ctx.fillStyle = vm.titleFontColor;
|
|
ctx.font = helpers$1.fontString(titleFontSize, vm._titleFontStyle, vm._titleFontFamily);
|
|
|
|
var i, len;
|
|
for (i = 0, len = title.length; i < len; ++i) {
|
|
ctx.fillText(title[i], pt.x, pt.y);
|
|
pt.y += titleFontSize + titleSpacing; // Line Height and spacing
|
|
|
|
if (i + 1 === title.length) {
|
|
pt.y += vm.titleMarginBottom - titleSpacing; // If Last, add margin, remove spacing
|
|
}
|
|
}
|
|
}
|
|
},
|
|
|
|
drawBody: function(pt, vm, ctx) {
|
|
var bodyFontSize = vm.bodyFontSize;
|
|
var bodySpacing = vm.bodySpacing;
|
|
var bodyAlign = vm._bodyAlign;
|
|
var body = vm.body;
|
|
var drawColorBoxes = vm.displayColors;
|
|
var labelColors = vm.labelColors;
|
|
var xLinePadding = 0;
|
|
var colorX = drawColorBoxes ? getAlignedX(vm, 'left') : 0;
|
|
var textColor;
|
|
|
|
ctx.textAlign = bodyAlign;
|
|
ctx.textBaseline = 'top';
|
|
ctx.font = helpers$1.fontString(bodyFontSize, vm._bodyFontStyle, vm._bodyFontFamily);
|
|
|
|
pt.x = getAlignedX(vm, bodyAlign);
|
|
|
|
// Before Body
|
|
var fillLineOfText = function(line) {
|
|
ctx.fillText(line, pt.x + xLinePadding, pt.y);
|
|
pt.y += bodyFontSize + bodySpacing;
|
|
};
|
|
|
|
// Before body lines
|
|
ctx.fillStyle = vm.bodyFontColor;
|
|
helpers$1.each(vm.beforeBody, fillLineOfText);
|
|
|
|
xLinePadding = drawColorBoxes && bodyAlign !== 'right'
|
|
? bodyAlign === 'center' ? (bodyFontSize / 2 + 1) : (bodyFontSize + 2)
|
|
: 0;
|
|
|
|
// Draw body lines now
|
|
helpers$1.each(body, function(bodyItem, i) {
|
|
textColor = vm.labelTextColors[i];
|
|
ctx.fillStyle = textColor;
|
|
helpers$1.each(bodyItem.before, fillLineOfText);
|
|
|
|
helpers$1.each(bodyItem.lines, function(line) {
|
|
// Draw Legend-like boxes if needed
|
|
if (drawColorBoxes) {
|
|
// Fill a white rect so that colours merge nicely if the opacity is < 1
|
|
ctx.fillStyle = vm.legendColorBackground;
|
|
ctx.fillRect(colorX, pt.y, bodyFontSize, bodyFontSize);
|
|
|
|
// Border
|
|
ctx.lineWidth = 1;
|
|
ctx.strokeStyle = labelColors[i].borderColor;
|
|
ctx.strokeRect(colorX, pt.y, bodyFontSize, bodyFontSize);
|
|
|
|
// Inner square
|
|
ctx.fillStyle = labelColors[i].backgroundColor;
|
|
ctx.fillRect(colorX + 1, pt.y + 1, bodyFontSize - 2, bodyFontSize - 2);
|
|
ctx.fillStyle = textColor;
|
|
}
|
|
|
|
fillLineOfText(line);
|
|
});
|
|
|
|
helpers$1.each(bodyItem.after, fillLineOfText);
|
|
});
|
|
|
|
// Reset back to 0 for after body
|
|
xLinePadding = 0;
|
|
|
|
// After body lines
|
|
helpers$1.each(vm.afterBody, fillLineOfText);
|
|
pt.y -= bodySpacing; // Remove last body spacing
|
|
},
|
|
|
|
drawFooter: function(pt, vm, ctx) {
|
|
var footer = vm.footer;
|
|
|
|
if (footer.length) {
|
|
pt.x = getAlignedX(vm, vm._footerAlign);
|
|
pt.y += vm.footerMarginTop;
|
|
|
|
ctx.textAlign = vm._footerAlign;
|
|
ctx.textBaseline = 'top';
|
|
|
|
ctx.fillStyle = vm.footerFontColor;
|
|
ctx.font = helpers$1.fontString(vm.footerFontSize, vm._footerFontStyle, vm._footerFontFamily);
|
|
|
|
helpers$1.each(footer, function(line) {
|
|
ctx.fillText(line, pt.x, pt.y);
|
|
pt.y += vm.footerFontSize + vm.footerSpacing;
|
|
});
|
|
}
|
|
},
|
|
|
|
drawBackground: function(pt, vm, ctx, tooltipSize) {
|
|
ctx.fillStyle = vm.backgroundColor;
|
|
ctx.strokeStyle = vm.borderColor;
|
|
ctx.lineWidth = vm.borderWidth;
|
|
var xAlign = vm.xAlign;
|
|
var yAlign = vm.yAlign;
|
|
var x = pt.x;
|
|
var y = pt.y;
|
|
var width = tooltipSize.width;
|
|
var height = tooltipSize.height;
|
|
var radius = vm.cornerRadius;
|
|
|
|
ctx.beginPath();
|
|
ctx.moveTo(x + radius, y);
|
|
if (yAlign === 'top') {
|
|
this.drawCaret(pt, tooltipSize);
|
|
}
|
|
ctx.lineTo(x + width - radius, y);
|
|
ctx.quadraticCurveTo(x + width, y, x + width, y + radius);
|
|
if (yAlign === 'center' && xAlign === 'right') {
|
|
this.drawCaret(pt, tooltipSize);
|
|
}
|
|
ctx.lineTo(x + width, y + height - radius);
|
|
ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height);
|
|
if (yAlign === 'bottom') {
|
|
this.drawCaret(pt, tooltipSize);
|
|
}
|
|
ctx.lineTo(x + radius, y + height);
|
|
ctx.quadraticCurveTo(x, y + height, x, y + height - radius);
|
|
if (yAlign === 'center' && xAlign === 'left') {
|
|
this.drawCaret(pt, tooltipSize);
|
|
}
|
|
ctx.lineTo(x, y + radius);
|
|
ctx.quadraticCurveTo(x, y, x + radius, y);
|
|
ctx.closePath();
|
|
|
|
ctx.fill();
|
|
|
|
if (vm.borderWidth > 0) {
|
|
ctx.stroke();
|
|
}
|
|
},
|
|
|
|
draw: function() {
|
|
var ctx = this._chart.ctx;
|
|
var vm = this._view;
|
|
|
|
if (vm.opacity === 0) {
|
|
return;
|
|
}
|
|
|
|
var tooltipSize = {
|
|
width: vm.width,
|
|
height: vm.height
|
|
};
|
|
var pt = {
|
|
x: vm.x,
|
|
y: vm.y
|
|
};
|
|
|
|
// IE11/Edge does not like very small opacities, so snap to 0
|
|
var opacity = Math.abs(vm.opacity < 1e-3) ? 0 : vm.opacity;
|
|
|
|
// Truthy/falsey value for empty tooltip
|
|
var hasTooltipContent = vm.title.length || vm.beforeBody.length || vm.body.length || vm.afterBody.length || vm.footer.length;
|
|
|
|
if (this._options.enabled && hasTooltipContent) {
|
|
ctx.save();
|
|
ctx.globalAlpha = opacity;
|
|
|
|
// Draw Background
|
|
this.drawBackground(pt, vm, ctx, tooltipSize);
|
|
|
|
// Draw Title, Body, and Footer
|
|
pt.y += vm.yPadding;
|
|
|
|
// Titles
|
|
this.drawTitle(pt, vm, ctx);
|
|
|
|
// Body
|
|
this.drawBody(pt, vm, ctx);
|
|
|
|
// Footer
|
|
this.drawFooter(pt, vm, ctx);
|
|
|
|
ctx.restore();
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Handle an event
|
|
* @private
|
|
* @param {IEvent} event - The event to handle
|
|
* @returns {boolean} true if the tooltip changed
|
|
*/
|
|
handleEvent: function(e) {
|
|
var me = this;
|
|
var options = me._options;
|
|
var changed = false;
|
|
|
|
me._lastActive = me._lastActive || [];
|
|
|
|
// Find Active Elements for tooltips
|
|
if (e.type === 'mouseout') {
|
|
me._active = [];
|
|
} else {
|
|
me._active = me._chart.getElementsAtEventForMode(e, options.mode, options);
|
|
}
|
|
|
|
// Remember Last Actives
|
|
changed = !helpers$1.arrayEquals(me._active, me._lastActive);
|
|
|
|
// Only handle target event on tooltip change
|
|
if (changed) {
|
|
me._lastActive = me._active;
|
|
|
|
if (options.enabled || options.custom) {
|
|
me._eventPosition = {
|
|
x: e.x,
|
|
y: e.y
|
|
};
|
|
|
|
me.update(true);
|
|
me.pivot();
|
|
}
|
|
}
|
|
|
|
return changed;
|
|
}
|
|
});
|
|
|
|
/**
|
|
* @namespace Chart.Tooltip.positioners
|
|
*/
|
|
var positioners_1 = positioners;
|
|
|
|
var core_tooltip = exports$3;
|
|
core_tooltip.positioners = positioners_1;
|
|
|
|
var valueOrDefault$8 = helpers$1.valueOrDefault;
|
|
|
|
core_defaults._set('global', {
|
|
elements: {},
|
|
events: [
|
|
'mousemove',
|
|
'mouseout',
|
|
'click',
|
|
'touchstart',
|
|
'touchmove'
|
|
],
|
|
hover: {
|
|
onHover: null,
|
|
mode: 'nearest',
|
|
intersect: true,
|
|
animationDuration: 400
|
|
},
|
|
onClick: null,
|
|
maintainAspectRatio: true,
|
|
responsive: true,
|
|
responsiveAnimationDuration: 0
|
|
});
|
|
|
|
/**
|
|
* Recursively merge the given config objects representing the `scales` option
|
|
* by incorporating scale defaults in `xAxes` and `yAxes` array items, then
|
|
* returns a deep copy of the result, thus doesn't alter inputs.
|
|
*/
|
|
function mergeScaleConfig(/* config objects ... */) {
|
|
return helpers$1.merge({}, [].slice.call(arguments), {
|
|
merger: function(key, target, source, options) {
|
|
if (key === 'xAxes' || key === 'yAxes') {
|
|
var slen = source[key].length;
|
|
var i, type, scale;
|
|
|
|
if (!target[key]) {
|
|
target[key] = [];
|
|
}
|
|
|
|
for (i = 0; i < slen; ++i) {
|
|
scale = source[key][i];
|
|
type = valueOrDefault$8(scale.type, key === 'xAxes' ? 'category' : 'linear');
|
|
|
|
if (i >= target[key].length) {
|
|
target[key].push({});
|
|
}
|
|
|
|
if (!target[key][i].type || (scale.type && scale.type !== target[key][i].type)) {
|
|
// new/untyped scale or type changed: let's apply the new defaults
|
|
// then merge source scale to correctly overwrite the defaults.
|
|
helpers$1.merge(target[key][i], [core_scaleService.getScaleDefaults(type), scale]);
|
|
} else {
|
|
// scales type are the same
|
|
helpers$1.merge(target[key][i], scale);
|
|
}
|
|
}
|
|
} else {
|
|
helpers$1._merger(key, target, source, options);
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Recursively merge the given config objects as the root options by handling
|
|
* default scale options for the `scales` and `scale` properties, then returns
|
|
* a deep copy of the result, thus doesn't alter inputs.
|
|
*/
|
|
function mergeConfig(/* config objects ... */) {
|
|
return helpers$1.merge({}, [].slice.call(arguments), {
|
|
merger: function(key, target, source, options) {
|
|
var tval = target[key] || {};
|
|
var sval = source[key];
|
|
|
|
if (key === 'scales') {
|
|
// scale config merging is complex. Add our own function here for that
|
|
target[key] = mergeScaleConfig(tval, sval);
|
|
} else if (key === 'scale') {
|
|
// used in polar area & radar charts since there is only one scale
|
|
target[key] = helpers$1.merge(tval, [core_scaleService.getScaleDefaults(sval.type), sval]);
|
|
} else {
|
|
helpers$1._merger(key, target, source, options);
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
function initConfig(config) {
|
|
config = config || {};
|
|
|
|
// Do NOT use mergeConfig for the data object because this method merges arrays
|
|
// and so would change references to labels and datasets, preventing data updates.
|
|
var data = config.data = config.data || {};
|
|
data.datasets = data.datasets || [];
|
|
data.labels = data.labels || [];
|
|
|
|
config.options = mergeConfig(
|
|
core_defaults.global,
|
|
core_defaults[config.type],
|
|
config.options || {});
|
|
|
|
return config;
|
|
}
|
|
|
|
function updateConfig(chart) {
|
|
var newOptions = chart.options;
|
|
|
|
helpers$1.each(chart.scales, function(scale) {
|
|
core_layouts.removeBox(chart, scale);
|
|
});
|
|
|
|
newOptions = mergeConfig(
|
|
core_defaults.global,
|
|
core_defaults[chart.config.type],
|
|
newOptions);
|
|
|
|
chart.options = chart.config.options = newOptions;
|
|
chart.ensureScalesHaveIDs();
|
|
chart.buildOrUpdateScales();
|
|
|
|
// Tooltip
|
|
chart.tooltip._options = newOptions.tooltips;
|
|
chart.tooltip.initialize();
|
|
}
|
|
|
|
function positionIsHorizontal(position) {
|
|
return position === 'top' || position === 'bottom';
|
|
}
|
|
|
|
var Chart = function(item, config) {
|
|
this.construct(item, config);
|
|
return this;
|
|
};
|
|
|
|
helpers$1.extend(Chart.prototype, /** @lends Chart */ {
|
|
/**
|
|
* @private
|
|
*/
|
|
construct: function(item, config) {
|
|
var me = this;
|
|
|
|
config = initConfig(config);
|
|
|
|
var context = platform.acquireContext(item, config);
|
|
var canvas = context && context.canvas;
|
|
var height = canvas && canvas.height;
|
|
var width = canvas && canvas.width;
|
|
|
|
me.id = helpers$1.uid();
|
|
me.ctx = context;
|
|
me.canvas = canvas;
|
|
me.config = config;
|
|
me.width = width;
|
|
me.height = height;
|
|
me.aspectRatio = height ? width / height : null;
|
|
me.options = config.options;
|
|
me._bufferedRender = false;
|
|
|
|
/**
|
|
* Provided for backward compatibility, Chart and Chart.Controller have been merged,
|
|
* the "instance" still need to be defined since it might be called from plugins.
|
|
* @prop Chart#chart
|
|
* @deprecated since version 2.6.0
|
|
* @todo remove at version 3
|
|
* @private
|
|
*/
|
|
me.chart = me;
|
|
me.controller = me; // chart.chart.controller #inception
|
|
|
|
// Add the chart instance to the global namespace
|
|
Chart.instances[me.id] = me;
|
|
|
|
// Define alias to the config data: `chart.data === chart.config.data`
|
|
Object.defineProperty(me, 'data', {
|
|
get: function() {
|
|
return me.config.data;
|
|
},
|
|
set: function(value) {
|
|
me.config.data = value;
|
|
}
|
|
});
|
|
|
|
if (!context || !canvas) {
|
|
// The given item is not a compatible context2d element, let's return before finalizing
|
|
// the chart initialization but after setting basic chart / controller properties that
|
|
// can help to figure out that the chart is not valid (e.g chart.canvas !== null);
|
|
// https://github.com/chartjs/Chart.js/issues/2807
|
|
console.error("Failed to create chart: can't acquire context from the given item");
|
|
return;
|
|
}
|
|
|
|
me.initialize();
|
|
me.update();
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
initialize: function() {
|
|
var me = this;
|
|
|
|
// Before init plugin notification
|
|
core_plugins.notify(me, 'beforeInit');
|
|
|
|
helpers$1.retinaScale(me, me.options.devicePixelRatio);
|
|
|
|
me.bindEvents();
|
|
|
|
if (me.options.responsive) {
|
|
// Initial resize before chart draws (must be silent to preserve initial animations).
|
|
me.resize(true);
|
|
}
|
|
|
|
// Make sure scales have IDs and are built before we build any controllers.
|
|
me.ensureScalesHaveIDs();
|
|
me.buildOrUpdateScales();
|
|
me.initToolTip();
|
|
|
|
// After init plugin notification
|
|
core_plugins.notify(me, 'afterInit');
|
|
|
|
return me;
|
|
},
|
|
|
|
clear: function() {
|
|
helpers$1.canvas.clear(this);
|
|
return this;
|
|
},
|
|
|
|
stop: function() {
|
|
// Stops any current animation loop occurring
|
|
core_animations.cancelAnimation(this);
|
|
return this;
|
|
},
|
|
|
|
resize: function(silent) {
|
|
var me = this;
|
|
var options = me.options;
|
|
var canvas = me.canvas;
|
|
var aspectRatio = (options.maintainAspectRatio && me.aspectRatio) || null;
|
|
|
|
// the canvas render width and height will be casted to integers so make sure that
|
|
// the canvas display style uses the same integer values to avoid blurring effect.
|
|
|
|
// Set to 0 instead of canvas.size because the size defaults to 300x150 if the element is collapsed
|
|
var newWidth = Math.max(0, Math.floor(helpers$1.getMaximumWidth(canvas)));
|
|
var newHeight = Math.max(0, Math.floor(aspectRatio ? newWidth / aspectRatio : helpers$1.getMaximumHeight(canvas)));
|
|
|
|
if (me.width === newWidth && me.height === newHeight) {
|
|
return;
|
|
}
|
|
|
|
canvas.width = me.width = newWidth;
|
|
canvas.height = me.height = newHeight;
|
|
canvas.style.width = newWidth + 'px';
|
|
canvas.style.height = newHeight + 'px';
|
|
|
|
helpers$1.retinaScale(me, options.devicePixelRatio);
|
|
|
|
if (!silent) {
|
|
// Notify any plugins about the resize
|
|
var newSize = {width: newWidth, height: newHeight};
|
|
core_plugins.notify(me, 'resize', [newSize]);
|
|
|
|
// Notify of resize
|
|
if (options.onResize) {
|
|
options.onResize(me, newSize);
|
|
}
|
|
|
|
me.stop();
|
|
me.update({
|
|
duration: options.responsiveAnimationDuration
|
|
});
|
|
}
|
|
},
|
|
|
|
ensureScalesHaveIDs: function() {
|
|
var options = this.options;
|
|
var scalesOptions = options.scales || {};
|
|
var scaleOptions = options.scale;
|
|
|
|
helpers$1.each(scalesOptions.xAxes, function(xAxisOptions, index) {
|
|
xAxisOptions.id = xAxisOptions.id || ('x-axis-' + index);
|
|
});
|
|
|
|
helpers$1.each(scalesOptions.yAxes, function(yAxisOptions, index) {
|
|
yAxisOptions.id = yAxisOptions.id || ('y-axis-' + index);
|
|
});
|
|
|
|
if (scaleOptions) {
|
|
scaleOptions.id = scaleOptions.id || 'scale';
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Builds a map of scale ID to scale object for future lookup.
|
|
*/
|
|
buildOrUpdateScales: function() {
|
|
var me = this;
|
|
var options = me.options;
|
|
var scales = me.scales || {};
|
|
var items = [];
|
|
var updated = Object.keys(scales).reduce(function(obj, id) {
|
|
obj[id] = false;
|
|
return obj;
|
|
}, {});
|
|
|
|
if (options.scales) {
|
|
items = items.concat(
|
|
(options.scales.xAxes || []).map(function(xAxisOptions) {
|
|
return {options: xAxisOptions, dtype: 'category', dposition: 'bottom'};
|
|
}),
|
|
(options.scales.yAxes || []).map(function(yAxisOptions) {
|
|
return {options: yAxisOptions, dtype: 'linear', dposition: 'left'};
|
|
})
|
|
);
|
|
}
|
|
|
|
if (options.scale) {
|
|
items.push({
|
|
options: options.scale,
|
|
dtype: 'radialLinear',
|
|
isDefault: true,
|
|
dposition: 'chartArea'
|
|
});
|
|
}
|
|
|
|
helpers$1.each(items, function(item) {
|
|
var scaleOptions = item.options;
|
|
var id = scaleOptions.id;
|
|
var scaleType = valueOrDefault$8(scaleOptions.type, item.dtype);
|
|
|
|
if (positionIsHorizontal(scaleOptions.position) !== positionIsHorizontal(item.dposition)) {
|
|
scaleOptions.position = item.dposition;
|
|
}
|
|
|
|
updated[id] = true;
|
|
var scale = null;
|
|
if (id in scales && scales[id].type === scaleType) {
|
|
scale = scales[id];
|
|
scale.options = scaleOptions;
|
|
scale.ctx = me.ctx;
|
|
scale.chart = me;
|
|
} else {
|
|
var scaleClass = core_scaleService.getScaleConstructor(scaleType);
|
|
if (!scaleClass) {
|
|
return;
|
|
}
|
|
scale = new scaleClass({
|
|
id: id,
|
|
type: scaleType,
|
|
options: scaleOptions,
|
|
ctx: me.ctx,
|
|
chart: me
|
|
});
|
|
scales[scale.id] = scale;
|
|
}
|
|
|
|
scale.mergeTicksOptions();
|
|
|
|
// TODO(SB): I think we should be able to remove this custom case (options.scale)
|
|
// and consider it as a regular scale part of the "scales"" map only! This would
|
|
// make the logic easier and remove some useless? custom code.
|
|
if (item.isDefault) {
|
|
me.scale = scale;
|
|
}
|
|
});
|
|
// clear up discarded scales
|
|
helpers$1.each(updated, function(hasUpdated, id) {
|
|
if (!hasUpdated) {
|
|
delete scales[id];
|
|
}
|
|
});
|
|
|
|
me.scales = scales;
|
|
|
|
core_scaleService.addScalesToLayout(this);
|
|
},
|
|
|
|
buildOrUpdateControllers: function() {
|
|
var me = this;
|
|
var newControllers = [];
|
|
|
|
helpers$1.each(me.data.datasets, function(dataset, datasetIndex) {
|
|
var meta = me.getDatasetMeta(datasetIndex);
|
|
var type = dataset.type || me.config.type;
|
|
|
|
if (meta.type && meta.type !== type) {
|
|
me.destroyDatasetMeta(datasetIndex);
|
|
meta = me.getDatasetMeta(datasetIndex);
|
|
}
|
|
meta.type = type;
|
|
|
|
if (meta.controller) {
|
|
meta.controller.updateIndex(datasetIndex);
|
|
meta.controller.linkScales();
|
|
} else {
|
|
var ControllerClass = controllers[meta.type];
|
|
if (ControllerClass === undefined) {
|
|
throw new Error('"' + meta.type + '" is not a chart type.');
|
|
}
|
|
|
|
meta.controller = new ControllerClass(me, datasetIndex);
|
|
newControllers.push(meta.controller);
|
|
}
|
|
}, me);
|
|
|
|
return newControllers;
|
|
},
|
|
|
|
/**
|
|
* Reset the elements of all datasets
|
|
* @private
|
|
*/
|
|
resetElements: function() {
|
|
var me = this;
|
|
helpers$1.each(me.data.datasets, function(dataset, datasetIndex) {
|
|
me.getDatasetMeta(datasetIndex).controller.reset();
|
|
}, me);
|
|
},
|
|
|
|
/**
|
|
* Resets the chart back to it's state before the initial animation
|
|
*/
|
|
reset: function() {
|
|
this.resetElements();
|
|
this.tooltip.initialize();
|
|
},
|
|
|
|
update: function(config) {
|
|
var me = this;
|
|
|
|
if (!config || typeof config !== 'object') {
|
|
// backwards compatibility
|
|
config = {
|
|
duration: config,
|
|
lazy: arguments[1]
|
|
};
|
|
}
|
|
|
|
updateConfig(me);
|
|
|
|
// plugins options references might have change, let's invalidate the cache
|
|
// https://github.com/chartjs/Chart.js/issues/5111#issuecomment-355934167
|
|
core_plugins._invalidate(me);
|
|
|
|
if (core_plugins.notify(me, 'beforeUpdate') === false) {
|
|
return;
|
|
}
|
|
|
|
// In case the entire data object changed
|
|
me.tooltip._data = me.data;
|
|
|
|
// Make sure dataset controllers are updated and new controllers are reset
|
|
var newControllers = me.buildOrUpdateControllers();
|
|
|
|
// Make sure all dataset controllers have correct meta data counts
|
|
helpers$1.each(me.data.datasets, function(dataset, datasetIndex) {
|
|
me.getDatasetMeta(datasetIndex).controller.buildOrUpdateElements();
|
|
}, me);
|
|
|
|
me.updateLayout();
|
|
|
|
// Can only reset the new controllers after the scales have been updated
|
|
if (me.options.animation && me.options.animation.duration) {
|
|
helpers$1.each(newControllers, function(controller) {
|
|
controller.reset();
|
|
});
|
|
}
|
|
|
|
me.updateDatasets();
|
|
|
|
// Need to reset tooltip in case it is displayed with elements that are removed
|
|
// after update.
|
|
me.tooltip.initialize();
|
|
|
|
// Last active contains items that were previously in the tooltip.
|
|
// When we reset the tooltip, we need to clear it
|
|
me.lastActive = [];
|
|
|
|
// Do this before render so that any plugins that need final scale updates can use it
|
|
core_plugins.notify(me, 'afterUpdate');
|
|
|
|
if (me._bufferedRender) {
|
|
me._bufferedRequest = {
|
|
duration: config.duration,
|
|
easing: config.easing,
|
|
lazy: config.lazy
|
|
};
|
|
} else {
|
|
me.render(config);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Updates the chart layout unless a plugin returns `false` to the `beforeLayout`
|
|
* hook, in which case, plugins will not be called on `afterLayout`.
|
|
* @private
|
|
*/
|
|
updateLayout: function() {
|
|
var me = this;
|
|
|
|
if (core_plugins.notify(me, 'beforeLayout') === false) {
|
|
return;
|
|
}
|
|
|
|
core_layouts.update(this, this.width, this.height);
|
|
|
|
/**
|
|
* Provided for backward compatibility, use `afterLayout` instead.
|
|
* @method IPlugin#afterScaleUpdate
|
|
* @deprecated since version 2.5.0
|
|
* @todo remove at version 3
|
|
* @private
|
|
*/
|
|
core_plugins.notify(me, 'afterScaleUpdate');
|
|
core_plugins.notify(me, 'afterLayout');
|
|
},
|
|
|
|
/**
|
|
* Updates all datasets unless a plugin returns `false` to the `beforeDatasetsUpdate`
|
|
* hook, in which case, plugins will not be called on `afterDatasetsUpdate`.
|
|
* @private
|
|
*/
|
|
updateDatasets: function() {
|
|
var me = this;
|
|
|
|
if (core_plugins.notify(me, 'beforeDatasetsUpdate') === false) {
|
|
return;
|
|
}
|
|
|
|
for (var i = 0, ilen = me.data.datasets.length; i < ilen; ++i) {
|
|
me.updateDataset(i);
|
|
}
|
|
|
|
core_plugins.notify(me, 'afterDatasetsUpdate');
|
|
},
|
|
|
|
/**
|
|
* Updates dataset at index unless a plugin returns `false` to the `beforeDatasetUpdate`
|
|
* hook, in which case, plugins will not be called on `afterDatasetUpdate`.
|
|
* @private
|
|
*/
|
|
updateDataset: function(index) {
|
|
var me = this;
|
|
var meta = me.getDatasetMeta(index);
|
|
var args = {
|
|
meta: meta,
|
|
index: index
|
|
};
|
|
|
|
if (core_plugins.notify(me, 'beforeDatasetUpdate', [args]) === false) {
|
|
return;
|
|
}
|
|
|
|
meta.controller.update();
|
|
|
|
core_plugins.notify(me, 'afterDatasetUpdate', [args]);
|
|
},
|
|
|
|
render: function(config) {
|
|
var me = this;
|
|
|
|
if (!config || typeof config !== 'object') {
|
|
// backwards compatibility
|
|
config = {
|
|
duration: config,
|
|
lazy: arguments[1]
|
|
};
|
|
}
|
|
|
|
var animationOptions = me.options.animation;
|
|
var duration = valueOrDefault$8(config.duration, animationOptions && animationOptions.duration);
|
|
var lazy = config.lazy;
|
|
|
|
if (core_plugins.notify(me, 'beforeRender') === false) {
|
|
return;
|
|
}
|
|
|
|
var onComplete = function(animation) {
|
|
core_plugins.notify(me, 'afterRender');
|
|
helpers$1.callback(animationOptions && animationOptions.onComplete, [animation], me);
|
|
};
|
|
|
|
if (animationOptions && duration) {
|
|
var animation = new core_animation({
|
|
numSteps: duration / 16.66, // 60 fps
|
|
easing: config.easing || animationOptions.easing,
|
|
|
|
render: function(chart, animationObject) {
|
|
var easingFunction = helpers$1.easing.effects[animationObject.easing];
|
|
var currentStep = animationObject.currentStep;
|
|
var stepDecimal = currentStep / animationObject.numSteps;
|
|
|
|
chart.draw(easingFunction(stepDecimal), stepDecimal, currentStep);
|
|
},
|
|
|
|
onAnimationProgress: animationOptions.onProgress,
|
|
onAnimationComplete: onComplete
|
|
});
|
|
|
|
core_animations.addAnimation(me, animation, duration, lazy);
|
|
} else {
|
|
me.draw();
|
|
|
|
// See https://github.com/chartjs/Chart.js/issues/3781
|
|
onComplete(new core_animation({numSteps: 0, chart: me}));
|
|
}
|
|
|
|
return me;
|
|
},
|
|
|
|
draw: function(easingValue) {
|
|
var me = this;
|
|
|
|
me.clear();
|
|
|
|
if (helpers$1.isNullOrUndef(easingValue)) {
|
|
easingValue = 1;
|
|
}
|
|
|
|
me.transition(easingValue);
|
|
|
|
if (me.width <= 0 || me.height <= 0) {
|
|
return;
|
|
}
|
|
|
|
if (core_plugins.notify(me, 'beforeDraw', [easingValue]) === false) {
|
|
return;
|
|
}
|
|
|
|
// Draw all the scales
|
|
helpers$1.each(me.boxes, function(box) {
|
|
box.draw(me.chartArea);
|
|
}, me);
|
|
|
|
me.drawDatasets(easingValue);
|
|
me._drawTooltip(easingValue);
|
|
|
|
core_plugins.notify(me, 'afterDraw', [easingValue]);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
transition: function(easingValue) {
|
|
var me = this;
|
|
|
|
for (var i = 0, ilen = (me.data.datasets || []).length; i < ilen; ++i) {
|
|
if (me.isDatasetVisible(i)) {
|
|
me.getDatasetMeta(i).controller.transition(easingValue);
|
|
}
|
|
}
|
|
|
|
me.tooltip.transition(easingValue);
|
|
},
|
|
|
|
/**
|
|
* Draws all datasets unless a plugin returns `false` to the `beforeDatasetsDraw`
|
|
* hook, in which case, plugins will not be called on `afterDatasetsDraw`.
|
|
* @private
|
|
*/
|
|
drawDatasets: function(easingValue) {
|
|
var me = this;
|
|
|
|
if (core_plugins.notify(me, 'beforeDatasetsDraw', [easingValue]) === false) {
|
|
return;
|
|
}
|
|
|
|
// Draw datasets reversed to support proper line stacking
|
|
for (var i = (me.data.datasets || []).length - 1; i >= 0; --i) {
|
|
if (me.isDatasetVisible(i)) {
|
|
me.drawDataset(i, easingValue);
|
|
}
|
|
}
|
|
|
|
core_plugins.notify(me, 'afterDatasetsDraw', [easingValue]);
|
|
},
|
|
|
|
/**
|
|
* Draws dataset at index unless a plugin returns `false` to the `beforeDatasetDraw`
|
|
* hook, in which case, plugins will not be called on `afterDatasetDraw`.
|
|
* @private
|
|
*/
|
|
drawDataset: function(index, easingValue) {
|
|
var me = this;
|
|
var meta = me.getDatasetMeta(index);
|
|
var args = {
|
|
meta: meta,
|
|
index: index,
|
|
easingValue: easingValue
|
|
};
|
|
|
|
if (core_plugins.notify(me, 'beforeDatasetDraw', [args]) === false) {
|
|
return;
|
|
}
|
|
|
|
meta.controller.draw(easingValue);
|
|
|
|
core_plugins.notify(me, 'afterDatasetDraw', [args]);
|
|
},
|
|
|
|
/**
|
|
* Draws tooltip unless a plugin returns `false` to the `beforeTooltipDraw`
|
|
* hook, in which case, plugins will not be called on `afterTooltipDraw`.
|
|
* @private
|
|
*/
|
|
_drawTooltip: function(easingValue) {
|
|
var me = this;
|
|
var tooltip = me.tooltip;
|
|
var args = {
|
|
tooltip: tooltip,
|
|
easingValue: easingValue
|
|
};
|
|
|
|
if (core_plugins.notify(me, 'beforeTooltipDraw', [args]) === false) {
|
|
return;
|
|
}
|
|
|
|
tooltip.draw();
|
|
|
|
core_plugins.notify(me, 'afterTooltipDraw', [args]);
|
|
},
|
|
|
|
/**
|
|
* Get the single element that was clicked on
|
|
* @return An object containing the dataset index and element index of the matching element. Also contains the rectangle that was draw
|
|
*/
|
|
getElementAtEvent: function(e) {
|
|
return core_interaction.modes.single(this, e);
|
|
},
|
|
|
|
getElementsAtEvent: function(e) {
|
|
return core_interaction.modes.label(this, e, {intersect: true});
|
|
},
|
|
|
|
getElementsAtXAxis: function(e) {
|
|
return core_interaction.modes['x-axis'](this, e, {intersect: true});
|
|
},
|
|
|
|
getElementsAtEventForMode: function(e, mode, options) {
|
|
var method = core_interaction.modes[mode];
|
|
if (typeof method === 'function') {
|
|
return method(this, e, options);
|
|
}
|
|
|
|
return [];
|
|
},
|
|
|
|
getDatasetAtEvent: function(e) {
|
|
return core_interaction.modes.dataset(this, e, {intersect: true});
|
|
},
|
|
|
|
getDatasetMeta: function(datasetIndex) {
|
|
var me = this;
|
|
var dataset = me.data.datasets[datasetIndex];
|
|
if (!dataset._meta) {
|
|
dataset._meta = {};
|
|
}
|
|
|
|
var meta = dataset._meta[me.id];
|
|
if (!meta) {
|
|
meta = dataset._meta[me.id] = {
|
|
type: null,
|
|
data: [],
|
|
dataset: null,
|
|
controller: null,
|
|
hidden: null, // See isDatasetVisible() comment
|
|
xAxisID: null,
|
|
yAxisID: null
|
|
};
|
|
}
|
|
|
|
return meta;
|
|
},
|
|
|
|
getVisibleDatasetCount: function() {
|
|
var count = 0;
|
|
for (var i = 0, ilen = this.data.datasets.length; i < ilen; ++i) {
|
|
if (this.isDatasetVisible(i)) {
|
|
count++;
|
|
}
|
|
}
|
|
return count;
|
|
},
|
|
|
|
isDatasetVisible: function(datasetIndex) {
|
|
var meta = this.getDatasetMeta(datasetIndex);
|
|
|
|
// meta.hidden is a per chart dataset hidden flag override with 3 states: if true or false,
|
|
// the dataset.hidden value is ignored, else if null, the dataset hidden state is returned.
|
|
return typeof meta.hidden === 'boolean' ? !meta.hidden : !this.data.datasets[datasetIndex].hidden;
|
|
},
|
|
|
|
generateLegend: function() {
|
|
return this.options.legendCallback(this);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
destroyDatasetMeta: function(datasetIndex) {
|
|
var id = this.id;
|
|
var dataset = this.data.datasets[datasetIndex];
|
|
var meta = dataset._meta && dataset._meta[id];
|
|
|
|
if (meta) {
|
|
meta.controller.destroy();
|
|
delete dataset._meta[id];
|
|
}
|
|
},
|
|
|
|
destroy: function() {
|
|
var me = this;
|
|
var canvas = me.canvas;
|
|
var i, ilen;
|
|
|
|
me.stop();
|
|
|
|
// dataset controllers need to cleanup associated data
|
|
for (i = 0, ilen = me.data.datasets.length; i < ilen; ++i) {
|
|
me.destroyDatasetMeta(i);
|
|
}
|
|
|
|
if (canvas) {
|
|
me.unbindEvents();
|
|
helpers$1.canvas.clear(me);
|
|
platform.releaseContext(me.ctx);
|
|
me.canvas = null;
|
|
me.ctx = null;
|
|
}
|
|
|
|
core_plugins.notify(me, 'destroy');
|
|
|
|
delete Chart.instances[me.id];
|
|
},
|
|
|
|
toBase64Image: function() {
|
|
return this.canvas.toDataURL.apply(this.canvas, arguments);
|
|
},
|
|
|
|
initToolTip: function() {
|
|
var me = this;
|
|
me.tooltip = new core_tooltip({
|
|
_chart: me,
|
|
_chartInstance: me, // deprecated, backward compatibility
|
|
_data: me.data,
|
|
_options: me.options.tooltips
|
|
}, me);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
bindEvents: function() {
|
|
var me = this;
|
|
var listeners = me._listeners = {};
|
|
var listener = function() {
|
|
me.eventHandler.apply(me, arguments);
|
|
};
|
|
|
|
helpers$1.each(me.options.events, function(type) {
|
|
platform.addEventListener(me, type, listener);
|
|
listeners[type] = listener;
|
|
});
|
|
|
|
// Elements used to detect size change should not be injected for non responsive charts.
|
|
// See https://github.com/chartjs/Chart.js/issues/2210
|
|
if (me.options.responsive) {
|
|
listener = function() {
|
|
me.resize();
|
|
};
|
|
|
|
platform.addEventListener(me, 'resize', listener);
|
|
listeners.resize = listener;
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
unbindEvents: function() {
|
|
var me = this;
|
|
var listeners = me._listeners;
|
|
if (!listeners) {
|
|
return;
|
|
}
|
|
|
|
delete me._listeners;
|
|
helpers$1.each(listeners, function(listener, type) {
|
|
platform.removeEventListener(me, type, listener);
|
|
});
|
|
},
|
|
|
|
updateHoverStyle: function(elements, mode, enabled) {
|
|
var method = enabled ? 'setHoverStyle' : 'removeHoverStyle';
|
|
var element, i, ilen;
|
|
|
|
for (i = 0, ilen = elements.length; i < ilen; ++i) {
|
|
element = elements[i];
|
|
if (element) {
|
|
this.getDatasetMeta(element._datasetIndex).controller[method](element);
|
|
}
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
eventHandler: function(e) {
|
|
var me = this;
|
|
var tooltip = me.tooltip;
|
|
|
|
if (core_plugins.notify(me, 'beforeEvent', [e]) === false) {
|
|
return;
|
|
}
|
|
|
|
// Buffer any update calls so that renders do not occur
|
|
me._bufferedRender = true;
|
|
me._bufferedRequest = null;
|
|
|
|
var changed = me.handleEvent(e);
|
|
// for smooth tooltip animations issue #4989
|
|
// the tooltip should be the source of change
|
|
// Animation check workaround:
|
|
// tooltip._start will be null when tooltip isn't animating
|
|
if (tooltip) {
|
|
changed = tooltip._start
|
|
? tooltip.handleEvent(e)
|
|
: changed | tooltip.handleEvent(e);
|
|
}
|
|
|
|
core_plugins.notify(me, 'afterEvent', [e]);
|
|
|
|
var bufferedRequest = me._bufferedRequest;
|
|
if (bufferedRequest) {
|
|
// If we have an update that was triggered, we need to do a normal render
|
|
me.render(bufferedRequest);
|
|
} else if (changed && !me.animating) {
|
|
// If entering, leaving, or changing elements, animate the change via pivot
|
|
me.stop();
|
|
|
|
// We only need to render at this point. Updating will cause scales to be
|
|
// recomputed generating flicker & using more memory than necessary.
|
|
me.render({
|
|
duration: me.options.hover.animationDuration,
|
|
lazy: true
|
|
});
|
|
}
|
|
|
|
me._bufferedRender = false;
|
|
me._bufferedRequest = null;
|
|
|
|
return me;
|
|
},
|
|
|
|
/**
|
|
* Handle an event
|
|
* @private
|
|
* @param {IEvent} event the event to handle
|
|
* @return {boolean} true if the chart needs to re-render
|
|
*/
|
|
handleEvent: function(e) {
|
|
var me = this;
|
|
var options = me.options || {};
|
|
var hoverOptions = options.hover;
|
|
var changed = false;
|
|
|
|
me.lastActive = me.lastActive || [];
|
|
|
|
// Find Active Elements for hover and tooltips
|
|
if (e.type === 'mouseout') {
|
|
me.active = [];
|
|
} else {
|
|
me.active = me.getElementsAtEventForMode(e, hoverOptions.mode, hoverOptions);
|
|
}
|
|
|
|
// Invoke onHover hook
|
|
// Need to call with native event here to not break backwards compatibility
|
|
helpers$1.callback(options.onHover || options.hover.onHover, [e.native, me.active], me);
|
|
|
|
if (e.type === 'mouseup' || e.type === 'click') {
|
|
if (options.onClick) {
|
|
// Use e.native here for backwards compatibility
|
|
options.onClick.call(me, e.native, me.active);
|
|
}
|
|
}
|
|
|
|
// Remove styling for last active (even if it may still be active)
|
|
if (me.lastActive.length) {
|
|
me.updateHoverStyle(me.lastActive, hoverOptions.mode, false);
|
|
}
|
|
|
|
// Built in hover styling
|
|
if (me.active.length && hoverOptions.mode) {
|
|
me.updateHoverStyle(me.active, hoverOptions.mode, true);
|
|
}
|
|
|
|
changed = !helpers$1.arrayEquals(me.active, me.lastActive);
|
|
|
|
// Remember Last Actives
|
|
me.lastActive = me.active;
|
|
|
|
return changed;
|
|
}
|
|
});
|
|
|
|
/**
|
|
* NOTE(SB) We actually don't use this container anymore but we need to keep it
|
|
* for backward compatibility. Though, it can still be useful for plugins that
|
|
* would need to work on multiple charts?!
|
|
*/
|
|
Chart.instances = {};
|
|
|
|
var core_controller = Chart;
|
|
|
|
// DEPRECATIONS
|
|
|
|
/**
|
|
* Provided for backward compatibility, use Chart instead.
|
|
* @class Chart.Controller
|
|
* @deprecated since version 2.6
|
|
* @todo remove at version 3
|
|
* @private
|
|
*/
|
|
Chart.Controller = Chart;
|
|
|
|
/**
|
|
* Provided for backward compatibility, not available anymore.
|
|
* @namespace Chart
|
|
* @deprecated since version 2.8
|
|
* @todo remove at version 3
|
|
* @private
|
|
*/
|
|
Chart.types = {};
|
|
|
|
/**
|
|
* Provided for backward compatibility, not available anymore.
|
|
* @namespace Chart.helpers.configMerge
|
|
* @deprecated since version 2.8.0
|
|
* @todo remove at version 3
|
|
* @private
|
|
*/
|
|
helpers$1.configMerge = mergeConfig;
|
|
|
|
/**
|
|
* Provided for backward compatibility, not available anymore.
|
|
* @namespace Chart.helpers.scaleMerge
|
|
* @deprecated since version 2.8.0
|
|
* @todo remove at version 3
|
|
* @private
|
|
*/
|
|
helpers$1.scaleMerge = mergeScaleConfig;
|
|
|
|
var core_helpers = function() {
|
|
|
|
// -- Basic js utility methods
|
|
|
|
helpers$1.where = function(collection, filterCallback) {
|
|
if (helpers$1.isArray(collection) && Array.prototype.filter) {
|
|
return collection.filter(filterCallback);
|
|
}
|
|
var filtered = [];
|
|
|
|
helpers$1.each(collection, function(item) {
|
|
if (filterCallback(item)) {
|
|
filtered.push(item);
|
|
}
|
|
});
|
|
|
|
return filtered;
|
|
};
|
|
helpers$1.findIndex = Array.prototype.findIndex ?
|
|
function(array, callback, scope) {
|
|
return array.findIndex(callback, scope);
|
|
} :
|
|
function(array, callback, scope) {
|
|
scope = scope === undefined ? array : scope;
|
|
for (var i = 0, ilen = array.length; i < ilen; ++i) {
|
|
if (callback.call(scope, array[i], i, array)) {
|
|
return i;
|
|
}
|
|
}
|
|
return -1;
|
|
};
|
|
helpers$1.findNextWhere = function(arrayToSearch, filterCallback, startIndex) {
|
|
// Default to start of the array
|
|
if (helpers$1.isNullOrUndef(startIndex)) {
|
|
startIndex = -1;
|
|
}
|
|
for (var i = startIndex + 1; i < arrayToSearch.length; i++) {
|
|
var currentItem = arrayToSearch[i];
|
|
if (filterCallback(currentItem)) {
|
|
return currentItem;
|
|
}
|
|
}
|
|
};
|
|
helpers$1.findPreviousWhere = function(arrayToSearch, filterCallback, startIndex) {
|
|
// Default to end of the array
|
|
if (helpers$1.isNullOrUndef(startIndex)) {
|
|
startIndex = arrayToSearch.length;
|
|
}
|
|
for (var i = startIndex - 1; i >= 0; i--) {
|
|
var currentItem = arrayToSearch[i];
|
|
if (filterCallback(currentItem)) {
|
|
return currentItem;
|
|
}
|
|
}
|
|
};
|
|
|
|
// -- Math methods
|
|
helpers$1.isNumber = function(n) {
|
|
return !isNaN(parseFloat(n)) && isFinite(n);
|
|
};
|
|
helpers$1.almostEquals = function(x, y, epsilon) {
|
|
return Math.abs(x - y) < epsilon;
|
|
};
|
|
helpers$1.almostWhole = function(x, epsilon) {
|
|
var rounded = Math.round(x);
|
|
return (((rounded - epsilon) < x) && ((rounded + epsilon) > x));
|
|
};
|
|
helpers$1.max = function(array) {
|
|
return array.reduce(function(max, value) {
|
|
if (!isNaN(value)) {
|
|
return Math.max(max, value);
|
|
}
|
|
return max;
|
|
}, Number.NEGATIVE_INFINITY);
|
|
};
|
|
helpers$1.min = function(array) {
|
|
return array.reduce(function(min, value) {
|
|
if (!isNaN(value)) {
|
|
return Math.min(min, value);
|
|
}
|
|
return min;
|
|
}, Number.POSITIVE_INFINITY);
|
|
};
|
|
helpers$1.sign = Math.sign ?
|
|
function(x) {
|
|
return Math.sign(x);
|
|
} :
|
|
function(x) {
|
|
x = +x; // convert to a number
|
|
if (x === 0 || isNaN(x)) {
|
|
return x;
|
|
}
|
|
return x > 0 ? 1 : -1;
|
|
};
|
|
helpers$1.log10 = Math.log10 ?
|
|
function(x) {
|
|
return Math.log10(x);
|
|
} :
|
|
function(x) {
|
|
var exponent = Math.log(x) * Math.LOG10E; // Math.LOG10E = 1 / Math.LN10.
|
|
// Check for whole powers of 10,
|
|
// which due to floating point rounding error should be corrected.
|
|
var powerOf10 = Math.round(exponent);
|
|
var isPowerOf10 = x === Math.pow(10, powerOf10);
|
|
|
|
return isPowerOf10 ? powerOf10 : exponent;
|
|
};
|
|
helpers$1.toRadians = function(degrees) {
|
|
return degrees * (Math.PI / 180);
|
|
};
|
|
helpers$1.toDegrees = function(radians) {
|
|
return radians * (180 / Math.PI);
|
|
};
|
|
|
|
/**
|
|
* Returns the number of decimal places
|
|
* i.e. the number of digits after the decimal point, of the value of this Number.
|
|
* @param {number} x - A number.
|
|
* @returns {number} The number of decimal places.
|
|
* @private
|
|
*/
|
|
helpers$1._decimalPlaces = function(x) {
|
|
if (!helpers$1.isFinite(x)) {
|
|
return;
|
|
}
|
|
var e = 1;
|
|
var p = 0;
|
|
while (Math.round(x * e) / e !== x) {
|
|
e *= 10;
|
|
p++;
|
|
}
|
|
return p;
|
|
};
|
|
|
|
// Gets the angle from vertical upright to the point about a centre.
|
|
helpers$1.getAngleFromPoint = function(centrePoint, anglePoint) {
|
|
var distanceFromXCenter = anglePoint.x - centrePoint.x;
|
|
var distanceFromYCenter = anglePoint.y - centrePoint.y;
|
|
var radialDistanceFromCenter = Math.sqrt(distanceFromXCenter * distanceFromXCenter + distanceFromYCenter * distanceFromYCenter);
|
|
|
|
var angle = Math.atan2(distanceFromYCenter, distanceFromXCenter);
|
|
|
|
if (angle < (-0.5 * Math.PI)) {
|
|
angle += 2.0 * Math.PI; // make sure the returned angle is in the range of (-PI/2, 3PI/2]
|
|
}
|
|
|
|
return {
|
|
angle: angle,
|
|
distance: radialDistanceFromCenter
|
|
};
|
|
};
|
|
helpers$1.distanceBetweenPoints = function(pt1, pt2) {
|
|
return Math.sqrt(Math.pow(pt2.x - pt1.x, 2) + Math.pow(pt2.y - pt1.y, 2));
|
|
};
|
|
|
|
/**
|
|
* Provided for backward compatibility, not available anymore
|
|
* @function Chart.helpers.aliasPixel
|
|
* @deprecated since version 2.8.0
|
|
* @todo remove at version 3
|
|
*/
|
|
helpers$1.aliasPixel = function(pixelWidth) {
|
|
return (pixelWidth % 2 === 0) ? 0 : 0.5;
|
|
};
|
|
|
|
/**
|
|
* Returns the aligned pixel value to avoid anti-aliasing blur
|
|
* @param {Chart} chart - The chart instance.
|
|
* @param {number} pixel - A pixel value.
|
|
* @param {number} width - The width of the element.
|
|
* @returns {number} The aligned pixel value.
|
|
* @private
|
|
*/
|
|
helpers$1._alignPixel = function(chart, pixel, width) {
|
|
var devicePixelRatio = chart.currentDevicePixelRatio;
|
|
var halfWidth = width / 2;
|
|
return Math.round((pixel - halfWidth) * devicePixelRatio) / devicePixelRatio + halfWidth;
|
|
};
|
|
|
|
helpers$1.splineCurve = function(firstPoint, middlePoint, afterPoint, t) {
|
|
// Props to Rob Spencer at scaled innovation for his post on splining between points
|
|
// http://scaledinnovation.com/analytics/splines/aboutSplines.html
|
|
|
|
// This function must also respect "skipped" points
|
|
|
|
var previous = firstPoint.skip ? middlePoint : firstPoint;
|
|
var current = middlePoint;
|
|
var next = afterPoint.skip ? middlePoint : afterPoint;
|
|
|
|
var d01 = Math.sqrt(Math.pow(current.x - previous.x, 2) + Math.pow(current.y - previous.y, 2));
|
|
var d12 = Math.sqrt(Math.pow(next.x - current.x, 2) + Math.pow(next.y - current.y, 2));
|
|
|
|
var s01 = d01 / (d01 + d12);
|
|
var s12 = d12 / (d01 + d12);
|
|
|
|
// If all points are the same, s01 & s02 will be inf
|
|
s01 = isNaN(s01) ? 0 : s01;
|
|
s12 = isNaN(s12) ? 0 : s12;
|
|
|
|
var fa = t * s01; // scaling factor for triangle Ta
|
|
var fb = t * s12;
|
|
|
|
return {
|
|
previous: {
|
|
x: current.x - fa * (next.x - previous.x),
|
|
y: current.y - fa * (next.y - previous.y)
|
|
},
|
|
next: {
|
|
x: current.x + fb * (next.x - previous.x),
|
|
y: current.y + fb * (next.y - previous.y)
|
|
}
|
|
};
|
|
};
|
|
helpers$1.EPSILON = Number.EPSILON || 1e-14;
|
|
helpers$1.splineCurveMonotone = function(points) {
|
|
// This function calculates Bézier control points in a similar way than |splineCurve|,
|
|
// but preserves monotonicity of the provided data and ensures no local extremums are added
|
|
// between the dataset discrete points due to the interpolation.
|
|
// See : https://en.wikipedia.org/wiki/Monotone_cubic_interpolation
|
|
|
|
var pointsWithTangents = (points || []).map(function(point) {
|
|
return {
|
|
model: point._model,
|
|
deltaK: 0,
|
|
mK: 0
|
|
};
|
|
});
|
|
|
|
// Calculate slopes (deltaK) and initialize tangents (mK)
|
|
var pointsLen = pointsWithTangents.length;
|
|
var i, pointBefore, pointCurrent, pointAfter;
|
|
for (i = 0; i < pointsLen; ++i) {
|
|
pointCurrent = pointsWithTangents[i];
|
|
if (pointCurrent.model.skip) {
|
|
continue;
|
|
}
|
|
|
|
pointBefore = i > 0 ? pointsWithTangents[i - 1] : null;
|
|
pointAfter = i < pointsLen - 1 ? pointsWithTangents[i + 1] : null;
|
|
if (pointAfter && !pointAfter.model.skip) {
|
|
var slopeDeltaX = (pointAfter.model.x - pointCurrent.model.x);
|
|
|
|
// In the case of two points that appear at the same x pixel, slopeDeltaX is 0
|
|
pointCurrent.deltaK = slopeDeltaX !== 0 ? (pointAfter.model.y - pointCurrent.model.y) / slopeDeltaX : 0;
|
|
}
|
|
|
|
if (!pointBefore || pointBefore.model.skip) {
|
|
pointCurrent.mK = pointCurrent.deltaK;
|
|
} else if (!pointAfter || pointAfter.model.skip) {
|
|
pointCurrent.mK = pointBefore.deltaK;
|
|
} else if (this.sign(pointBefore.deltaK) !== this.sign(pointCurrent.deltaK)) {
|
|
pointCurrent.mK = 0;
|
|
} else {
|
|
pointCurrent.mK = (pointBefore.deltaK + pointCurrent.deltaK) / 2;
|
|
}
|
|
}
|
|
|
|
// Adjust tangents to ensure monotonic properties
|
|
var alphaK, betaK, tauK, squaredMagnitude;
|
|
for (i = 0; i < pointsLen - 1; ++i) {
|
|
pointCurrent = pointsWithTangents[i];
|
|
pointAfter = pointsWithTangents[i + 1];
|
|
if (pointCurrent.model.skip || pointAfter.model.skip) {
|
|
continue;
|
|
}
|
|
|
|
if (helpers$1.almostEquals(pointCurrent.deltaK, 0, this.EPSILON)) {
|
|
pointCurrent.mK = pointAfter.mK = 0;
|
|
continue;
|
|
}
|
|
|
|
alphaK = pointCurrent.mK / pointCurrent.deltaK;
|
|
betaK = pointAfter.mK / pointCurrent.deltaK;
|
|
squaredMagnitude = Math.pow(alphaK, 2) + Math.pow(betaK, 2);
|
|
if (squaredMagnitude <= 9) {
|
|
continue;
|
|
}
|
|
|
|
tauK = 3 / Math.sqrt(squaredMagnitude);
|
|
pointCurrent.mK = alphaK * tauK * pointCurrent.deltaK;
|
|
pointAfter.mK = betaK * tauK * pointCurrent.deltaK;
|
|
}
|
|
|
|
// Compute control points
|
|
var deltaX;
|
|
for (i = 0; i < pointsLen; ++i) {
|
|
pointCurrent = pointsWithTangents[i];
|
|
if (pointCurrent.model.skip) {
|
|
continue;
|
|
}
|
|
|
|
pointBefore = i > 0 ? pointsWithTangents[i - 1] : null;
|
|
pointAfter = i < pointsLen - 1 ? pointsWithTangents[i + 1] : null;
|
|
if (pointBefore && !pointBefore.model.skip) {
|
|
deltaX = (pointCurrent.model.x - pointBefore.model.x) / 3;
|
|
pointCurrent.model.controlPointPreviousX = pointCurrent.model.x - deltaX;
|
|
pointCurrent.model.controlPointPreviousY = pointCurrent.model.y - deltaX * pointCurrent.mK;
|
|
}
|
|
if (pointAfter && !pointAfter.model.skip) {
|
|
deltaX = (pointAfter.model.x - pointCurrent.model.x) / 3;
|
|
pointCurrent.model.controlPointNextX = pointCurrent.model.x + deltaX;
|
|
pointCurrent.model.controlPointNextY = pointCurrent.model.y + deltaX * pointCurrent.mK;
|
|
}
|
|
}
|
|
};
|
|
helpers$1.nextItem = function(collection, index, loop) {
|
|
if (loop) {
|
|
return index >= collection.length - 1 ? collection[0] : collection[index + 1];
|
|
}
|
|
return index >= collection.length - 1 ? collection[collection.length - 1] : collection[index + 1];
|
|
};
|
|
helpers$1.previousItem = function(collection, index, loop) {
|
|
if (loop) {
|
|
return index <= 0 ? collection[collection.length - 1] : collection[index - 1];
|
|
}
|
|
return index <= 0 ? collection[0] : collection[index - 1];
|
|
};
|
|
// Implementation of the nice number algorithm used in determining where axis labels will go
|
|
helpers$1.niceNum = function(range, round) {
|
|
var exponent = Math.floor(helpers$1.log10(range));
|
|
var fraction = range / Math.pow(10, exponent);
|
|
var niceFraction;
|
|
|
|
if (round) {
|
|
if (fraction < 1.5) {
|
|
niceFraction = 1;
|
|
} else if (fraction < 3) {
|
|
niceFraction = 2;
|
|
} else if (fraction < 7) {
|
|
niceFraction = 5;
|
|
} else {
|
|
niceFraction = 10;
|
|
}
|
|
} else if (fraction <= 1.0) {
|
|
niceFraction = 1;
|
|
} else if (fraction <= 2) {
|
|
niceFraction = 2;
|
|
} else if (fraction <= 5) {
|
|
niceFraction = 5;
|
|
} else {
|
|
niceFraction = 10;
|
|
}
|
|
|
|
return niceFraction * Math.pow(10, exponent);
|
|
};
|
|
// Request animation polyfill - https://www.paulirish.com/2011/requestanimationframe-for-smart-animating/
|
|
helpers$1.requestAnimFrame = (function() {
|
|
if (typeof window === 'undefined') {
|
|
return function(callback) {
|
|
callback();
|
|
};
|
|
}
|
|
return window.requestAnimationFrame ||
|
|
window.webkitRequestAnimationFrame ||
|
|
window.mozRequestAnimationFrame ||
|
|
window.oRequestAnimationFrame ||
|
|
window.msRequestAnimationFrame ||
|
|
function(callback) {
|
|
return window.setTimeout(callback, 1000 / 60);
|
|
};
|
|
}());
|
|
// -- DOM methods
|
|
helpers$1.getRelativePosition = function(evt, chart) {
|
|
var mouseX, mouseY;
|
|
var e = evt.originalEvent || evt;
|
|
var canvas = evt.target || evt.srcElement;
|
|
var boundingRect = canvas.getBoundingClientRect();
|
|
|
|
var touches = e.touches;
|
|
if (touches && touches.length > 0) {
|
|
mouseX = touches[0].clientX;
|
|
mouseY = touches[0].clientY;
|
|
|
|
} else {
|
|
mouseX = e.clientX;
|
|
mouseY = e.clientY;
|
|
}
|
|
|
|
// Scale mouse coordinates into canvas coordinates
|
|
// by following the pattern laid out by 'jerryj' in the comments of
|
|
// https://www.html5canvastutorials.com/advanced/html5-canvas-mouse-coordinates/
|
|
var paddingLeft = parseFloat(helpers$1.getStyle(canvas, 'padding-left'));
|
|
var paddingTop = parseFloat(helpers$1.getStyle(canvas, 'padding-top'));
|
|
var paddingRight = parseFloat(helpers$1.getStyle(canvas, 'padding-right'));
|
|
var paddingBottom = parseFloat(helpers$1.getStyle(canvas, 'padding-bottom'));
|
|
var width = boundingRect.right - boundingRect.left - paddingLeft - paddingRight;
|
|
var height = boundingRect.bottom - boundingRect.top - paddingTop - paddingBottom;
|
|
|
|
// We divide by the current device pixel ratio, because the canvas is scaled up by that amount in each direction. However
|
|
// the backend model is in unscaled coordinates. Since we are going to deal with our model coordinates, we go back here
|
|
mouseX = Math.round((mouseX - boundingRect.left - paddingLeft) / (width) * canvas.width / chart.currentDevicePixelRatio);
|
|
mouseY = Math.round((mouseY - boundingRect.top - paddingTop) / (height) * canvas.height / chart.currentDevicePixelRatio);
|
|
|
|
return {
|
|
x: mouseX,
|
|
y: mouseY
|
|
};
|
|
|
|
};
|
|
|
|
// Private helper function to convert max-width/max-height values that may be percentages into a number
|
|
function parseMaxStyle(styleValue, node, parentProperty) {
|
|
var valueInPixels;
|
|
if (typeof styleValue === 'string') {
|
|
valueInPixels = parseInt(styleValue, 10);
|
|
|
|
if (styleValue.indexOf('%') !== -1) {
|
|
// percentage * size in dimension
|
|
valueInPixels = valueInPixels / 100 * node.parentNode[parentProperty];
|
|
}
|
|
} else {
|
|
valueInPixels = styleValue;
|
|
}
|
|
|
|
return valueInPixels;
|
|
}
|
|
|
|
/**
|
|
* Returns if the given value contains an effective constraint.
|
|
* @private
|
|
*/
|
|
function isConstrainedValue(value) {
|
|
return value !== undefined && value !== null && value !== 'none';
|
|
}
|
|
|
|
/**
|
|
* Returns the max width or height of the given DOM node in a cross-browser compatible fashion
|
|
* @param {HTMLElement} domNode - the node to check the constraint on
|
|
* @param {string} maxStyle - the style that defines the maximum for the direction we are using ('max-width' / 'max-height')
|
|
* @param {string} percentageProperty - property of parent to use when calculating width as a percentage
|
|
* @see {@link https://www.nathanaeljones.com/blog/2013/reading-max-width-cross-browser}
|
|
*/
|
|
function getConstraintDimension(domNode, maxStyle, percentageProperty) {
|
|
var view = document.defaultView;
|
|
var parentNode = helpers$1._getParentNode(domNode);
|
|
var constrainedNode = view.getComputedStyle(domNode)[maxStyle];
|
|
var constrainedContainer = view.getComputedStyle(parentNode)[maxStyle];
|
|
var hasCNode = isConstrainedValue(constrainedNode);
|
|
var hasCContainer = isConstrainedValue(constrainedContainer);
|
|
var infinity = Number.POSITIVE_INFINITY;
|
|
|
|
if (hasCNode || hasCContainer) {
|
|
return Math.min(
|
|
hasCNode ? parseMaxStyle(constrainedNode, domNode, percentageProperty) : infinity,
|
|
hasCContainer ? parseMaxStyle(constrainedContainer, parentNode, percentageProperty) : infinity);
|
|
}
|
|
|
|
return 'none';
|
|
}
|
|
// returns Number or undefined if no constraint
|
|
helpers$1.getConstraintWidth = function(domNode) {
|
|
return getConstraintDimension(domNode, 'max-width', 'clientWidth');
|
|
};
|
|
// returns Number or undefined if no constraint
|
|
helpers$1.getConstraintHeight = function(domNode) {
|
|
return getConstraintDimension(domNode, 'max-height', 'clientHeight');
|
|
};
|
|
/**
|
|
* @private
|
|
*/
|
|
helpers$1._calculatePadding = function(container, padding, parentDimension) {
|
|
padding = helpers$1.getStyle(container, padding);
|
|
|
|
return padding.indexOf('%') > -1 ? parentDimension * parseInt(padding, 10) / 100 : parseInt(padding, 10);
|
|
};
|
|
/**
|
|
* @private
|
|
*/
|
|
helpers$1._getParentNode = function(domNode) {
|
|
var parent = domNode.parentNode;
|
|
if (parent && parent.toString() === '[object ShadowRoot]') {
|
|
parent = parent.host;
|
|
}
|
|
return parent;
|
|
};
|
|
helpers$1.getMaximumWidth = function(domNode) {
|
|
var container = helpers$1._getParentNode(domNode);
|
|
if (!container) {
|
|
return domNode.clientWidth;
|
|
}
|
|
|
|
var clientWidth = container.clientWidth;
|
|
var paddingLeft = helpers$1._calculatePadding(container, 'padding-left', clientWidth);
|
|
var paddingRight = helpers$1._calculatePadding(container, 'padding-right', clientWidth);
|
|
|
|
var w = clientWidth - paddingLeft - paddingRight;
|
|
var cw = helpers$1.getConstraintWidth(domNode);
|
|
return isNaN(cw) ? w : Math.min(w, cw);
|
|
};
|
|
helpers$1.getMaximumHeight = function(domNode) {
|
|
var container = helpers$1._getParentNode(domNode);
|
|
if (!container) {
|
|
return domNode.clientHeight;
|
|
}
|
|
|
|
var clientHeight = container.clientHeight;
|
|
var paddingTop = helpers$1._calculatePadding(container, 'padding-top', clientHeight);
|
|
var paddingBottom = helpers$1._calculatePadding(container, 'padding-bottom', clientHeight);
|
|
|
|
var h = clientHeight - paddingTop - paddingBottom;
|
|
var ch = helpers$1.getConstraintHeight(domNode);
|
|
return isNaN(ch) ? h : Math.min(h, ch);
|
|
};
|
|
helpers$1.getStyle = function(el, property) {
|
|
return el.currentStyle ?
|
|
el.currentStyle[property] :
|
|
document.defaultView.getComputedStyle(el, null).getPropertyValue(property);
|
|
};
|
|
helpers$1.retinaScale = function(chart, forceRatio) {
|
|
var pixelRatio = chart.currentDevicePixelRatio = forceRatio || (typeof window !== 'undefined' && window.devicePixelRatio) || 1;
|
|
if (pixelRatio === 1) {
|
|
return;
|
|
}
|
|
|
|
var canvas = chart.canvas;
|
|
var height = chart.height;
|
|
var width = chart.width;
|
|
|
|
canvas.height = height * pixelRatio;
|
|
canvas.width = width * pixelRatio;
|
|
chart.ctx.scale(pixelRatio, pixelRatio);
|
|
|
|
// If no style has been set on the canvas, the render size is used as display size,
|
|
// making the chart visually bigger, so let's enforce it to the "correct" values.
|
|
// See https://github.com/chartjs/Chart.js/issues/3575
|
|
if (!canvas.style.height && !canvas.style.width) {
|
|
canvas.style.height = height + 'px';
|
|
canvas.style.width = width + 'px';
|
|
}
|
|
};
|
|
// -- Canvas methods
|
|
helpers$1.fontString = function(pixelSize, fontStyle, fontFamily) {
|
|
return fontStyle + ' ' + pixelSize + 'px ' + fontFamily;
|
|
};
|
|
helpers$1.longestText = function(ctx, font, arrayOfThings, cache) {
|
|
cache = cache || {};
|
|
var data = cache.data = cache.data || {};
|
|
var gc = cache.garbageCollect = cache.garbageCollect || [];
|
|
|
|
if (cache.font !== font) {
|
|
data = cache.data = {};
|
|
gc = cache.garbageCollect = [];
|
|
cache.font = font;
|
|
}
|
|
|
|
ctx.font = font;
|
|
var longest = 0;
|
|
helpers$1.each(arrayOfThings, function(thing) {
|
|
// Undefined strings and arrays should not be measured
|
|
if (thing !== undefined && thing !== null && helpers$1.isArray(thing) !== true) {
|
|
longest = helpers$1.measureText(ctx, data, gc, longest, thing);
|
|
} else if (helpers$1.isArray(thing)) {
|
|
// if it is an array lets measure each element
|
|
// to do maybe simplify this function a bit so we can do this more recursively?
|
|
helpers$1.each(thing, function(nestedThing) {
|
|
// Undefined strings and arrays should not be measured
|
|
if (nestedThing !== undefined && nestedThing !== null && !helpers$1.isArray(nestedThing)) {
|
|
longest = helpers$1.measureText(ctx, data, gc, longest, nestedThing);
|
|
}
|
|
});
|
|
}
|
|
});
|
|
|
|
var gcLen = gc.length / 2;
|
|
if (gcLen > arrayOfThings.length) {
|
|
for (var i = 0; i < gcLen; i++) {
|
|
delete data[gc[i]];
|
|
}
|
|
gc.splice(0, gcLen);
|
|
}
|
|
return longest;
|
|
};
|
|
helpers$1.measureText = function(ctx, data, gc, longest, string) {
|
|
var textWidth = data[string];
|
|
if (!textWidth) {
|
|
textWidth = data[string] = ctx.measureText(string).width;
|
|
gc.push(string);
|
|
}
|
|
if (textWidth > longest) {
|
|
longest = textWidth;
|
|
}
|
|
return longest;
|
|
};
|
|
helpers$1.numberOfLabelLines = function(arrayOfThings) {
|
|
var numberOfLines = 1;
|
|
helpers$1.each(arrayOfThings, function(thing) {
|
|
if (helpers$1.isArray(thing)) {
|
|
if (thing.length > numberOfLines) {
|
|
numberOfLines = thing.length;
|
|
}
|
|
}
|
|
});
|
|
return numberOfLines;
|
|
};
|
|
|
|
helpers$1.color = !chartjsColor ?
|
|
function(value) {
|
|
console.error('Color.js not found!');
|
|
return value;
|
|
} :
|
|
function(value) {
|
|
/* global CanvasGradient */
|
|
if (value instanceof CanvasGradient) {
|
|
value = core_defaults.global.defaultColor;
|
|
}
|
|
|
|
return chartjsColor(value);
|
|
};
|
|
|
|
helpers$1.getHoverColor = function(colorValue) {
|
|
/* global CanvasPattern */
|
|
return (colorValue instanceof CanvasPattern || colorValue instanceof CanvasGradient) ?
|
|
colorValue :
|
|
helpers$1.color(colorValue).saturate(0.5).darken(0.1).rgbString();
|
|
};
|
|
};
|
|
|
|
function abstract() {
|
|
throw new Error(
|
|
'This method is not implemented: either no adapter can ' +
|
|
'be found or an incomplete integration was provided.'
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Date adapter (current used by the time scale)
|
|
* @namespace Chart._adapters._date
|
|
* @memberof Chart._adapters
|
|
* @private
|
|
*/
|
|
|
|
/**
|
|
* Currently supported unit string values.
|
|
* @typedef {('millisecond'|'second'|'minute'|'hour'|'day'|'week'|'month'|'quarter'|'year')}
|
|
* @memberof Chart._adapters._date
|
|
* @name Unit
|
|
*/
|
|
|
|
/**
|
|
* @class
|
|
*/
|
|
function DateAdapter(options) {
|
|
this.options = options || {};
|
|
}
|
|
|
|
helpers$1.extend(DateAdapter.prototype, /** @lends DateAdapter */ {
|
|
/**
|
|
* Returns a map of time formats for the supported formatting units defined
|
|
* in Unit as well as 'datetime' representing a detailed date/time string.
|
|
* @returns {{string: string}}
|
|
*/
|
|
formats: abstract,
|
|
|
|
/**
|
|
* Parses the given `value` and return the associated timestamp.
|
|
* @param {any} value - the value to parse (usually comes from the data)
|
|
* @param {string} [format] - the expected data format
|
|
* @returns {(number|null)}
|
|
* @function
|
|
*/
|
|
parse: abstract,
|
|
|
|
/**
|
|
* Returns the formatted date in the specified `format` for a given `timestamp`.
|
|
* @param {number} timestamp - the timestamp to format
|
|
* @param {string} format - the date/time token
|
|
* @return {string}
|
|
* @function
|
|
*/
|
|
format: abstract,
|
|
|
|
/**
|
|
* Adds the specified `amount` of `unit` to the given `timestamp`.
|
|
* @param {number} timestamp - the input timestamp
|
|
* @param {number} amount - the amount to add
|
|
* @param {Unit} unit - the unit as string
|
|
* @return {number}
|
|
* @function
|
|
*/
|
|
add: abstract,
|
|
|
|
/**
|
|
* Returns the number of `unit` between the given timestamps.
|
|
* @param {number} max - the input timestamp (reference)
|
|
* @param {number} min - the timestamp to substract
|
|
* @param {Unit} unit - the unit as string
|
|
* @return {number}
|
|
* @function
|
|
*/
|
|
diff: abstract,
|
|
|
|
/**
|
|
* Returns start of `unit` for the given `timestamp`.
|
|
* @param {number} timestamp - the input timestamp
|
|
* @param {Unit} unit - the unit as string
|
|
* @param {number} [weekday] - the ISO day of the week with 1 being Monday
|
|
* and 7 being Sunday (only needed if param *unit* is `isoWeek`).
|
|
* @function
|
|
*/
|
|
startOf: abstract,
|
|
|
|
/**
|
|
* Returns end of `unit` for the given `timestamp`.
|
|
* @param {number} timestamp - the input timestamp
|
|
* @param {Unit} unit - the unit as string
|
|
* @function
|
|
*/
|
|
endOf: abstract,
|
|
|
|
// DEPRECATIONS
|
|
|
|
/**
|
|
* Provided for backward compatibility for scale.getValueForPixel(),
|
|
* this method should be overridden only by the moment adapter.
|
|
* @deprecated since version 2.8.0
|
|
* @todo remove at version 3
|
|
* @private
|
|
*/
|
|
_create: function(value) {
|
|
return value;
|
|
}
|
|
});
|
|
|
|
DateAdapter.override = function(members) {
|
|
helpers$1.extend(DateAdapter.prototype, members);
|
|
};
|
|
|
|
var _date = DateAdapter;
|
|
|
|
var core_adapters = {
|
|
_date: _date
|
|
};
|
|
|
|
/**
|
|
* Namespace to hold static tick generation functions
|
|
* @namespace Chart.Ticks
|
|
*/
|
|
var core_ticks = {
|
|
/**
|
|
* Namespace to hold formatters for different types of ticks
|
|
* @namespace Chart.Ticks.formatters
|
|
*/
|
|
formatters: {
|
|
/**
|
|
* Formatter for value labels
|
|
* @method Chart.Ticks.formatters.values
|
|
* @param value the value to display
|
|
* @return {string|string[]} the label to display
|
|
*/
|
|
values: function(value) {
|
|
return helpers$1.isArray(value) ? value : '' + value;
|
|
},
|
|
|
|
/**
|
|
* Formatter for linear numeric ticks
|
|
* @method Chart.Ticks.formatters.linear
|
|
* @param tickValue {number} the value to be formatted
|
|
* @param index {number} the position of the tickValue parameter in the ticks array
|
|
* @param ticks {number[]} the list of ticks being converted
|
|
* @return {string} string representation of the tickValue parameter
|
|
*/
|
|
linear: function(tickValue, index, ticks) {
|
|
// If we have lots of ticks, don't use the ones
|
|
var delta = ticks.length > 3 ? ticks[2] - ticks[1] : ticks[1] - ticks[0];
|
|
|
|
// If we have a number like 2.5 as the delta, figure out how many decimal places we need
|
|
if (Math.abs(delta) > 1) {
|
|
if (tickValue !== Math.floor(tickValue)) {
|
|
// not an integer
|
|
delta = tickValue - Math.floor(tickValue);
|
|
}
|
|
}
|
|
|
|
var logDelta = helpers$1.log10(Math.abs(delta));
|
|
var tickString = '';
|
|
|
|
if (tickValue !== 0) {
|
|
var maxTick = Math.max(Math.abs(ticks[0]), Math.abs(ticks[ticks.length - 1]));
|
|
if (maxTick < 1e-4) { // all ticks are small numbers; use scientific notation
|
|
var logTick = helpers$1.log10(Math.abs(tickValue));
|
|
tickString = tickValue.toExponential(Math.floor(logTick) - Math.floor(logDelta));
|
|
} else {
|
|
var numDecimal = -1 * Math.floor(logDelta);
|
|
numDecimal = Math.max(Math.min(numDecimal, 20), 0); // toFixed has a max of 20 decimal places
|
|
tickString = tickValue.toFixed(numDecimal);
|
|
}
|
|
} else {
|
|
tickString = '0'; // never show decimal places for 0
|
|
}
|
|
|
|
return tickString;
|
|
},
|
|
|
|
logarithmic: function(tickValue, index, ticks) {
|
|
var remain = tickValue / (Math.pow(10, Math.floor(helpers$1.log10(tickValue))));
|
|
|
|
if (tickValue === 0) {
|
|
return '0';
|
|
} else if (remain === 1 || remain === 2 || remain === 5 || index === 0 || index === ticks.length - 1) {
|
|
return tickValue.toExponential();
|
|
}
|
|
return '';
|
|
}
|
|
}
|
|
};
|
|
|
|
var valueOrDefault$9 = helpers$1.valueOrDefault;
|
|
var valueAtIndexOrDefault = helpers$1.valueAtIndexOrDefault;
|
|
|
|
core_defaults._set('scale', {
|
|
display: true,
|
|
position: 'left',
|
|
offset: false,
|
|
|
|
// grid line settings
|
|
gridLines: {
|
|
display: true,
|
|
color: 'rgba(0, 0, 0, 0.1)',
|
|
lineWidth: 1,
|
|
drawBorder: true,
|
|
drawOnChartArea: true,
|
|
drawTicks: true,
|
|
tickMarkLength: 10,
|
|
zeroLineWidth: 1,
|
|
zeroLineColor: 'rgba(0,0,0,0.25)',
|
|
zeroLineBorderDash: [],
|
|
zeroLineBorderDashOffset: 0.0,
|
|
offsetGridLines: false,
|
|
borderDash: [],
|
|
borderDashOffset: 0.0
|
|
},
|
|
|
|
// scale label
|
|
scaleLabel: {
|
|
// display property
|
|
display: false,
|
|
|
|
// actual label
|
|
labelString: '',
|
|
|
|
// top/bottom padding
|
|
padding: {
|
|
top: 4,
|
|
bottom: 4
|
|
}
|
|
},
|
|
|
|
// label settings
|
|
ticks: {
|
|
beginAtZero: false,
|
|
minRotation: 0,
|
|
maxRotation: 50,
|
|
mirror: false,
|
|
padding: 0,
|
|
reverse: false,
|
|
display: true,
|
|
autoSkip: true,
|
|
autoSkipPadding: 0,
|
|
labelOffset: 0,
|
|
// We pass through arrays to be rendered as multiline labels, we convert Others to strings here.
|
|
callback: core_ticks.formatters.values,
|
|
minor: {},
|
|
major: {}
|
|
}
|
|
});
|
|
|
|
function labelsFromTicks(ticks) {
|
|
var labels = [];
|
|
var i, ilen;
|
|
|
|
for (i = 0, ilen = ticks.length; i < ilen; ++i) {
|
|
labels.push(ticks[i].label);
|
|
}
|
|
|
|
return labels;
|
|
}
|
|
|
|
function getPixelForGridLine(scale, index, offsetGridLines) {
|
|
var lineValue = scale.getPixelForTick(index);
|
|
|
|
if (offsetGridLines) {
|
|
if (scale.getTicks().length === 1) {
|
|
lineValue -= scale.isHorizontal() ?
|
|
Math.max(lineValue - scale.left, scale.right - lineValue) :
|
|
Math.max(lineValue - scale.top, scale.bottom - lineValue);
|
|
} else if (index === 0) {
|
|
lineValue -= (scale.getPixelForTick(1) - lineValue) / 2;
|
|
} else {
|
|
lineValue -= (lineValue - scale.getPixelForTick(index - 1)) / 2;
|
|
}
|
|
}
|
|
return lineValue;
|
|
}
|
|
|
|
function computeTextSize(context, tick, font) {
|
|
return helpers$1.isArray(tick) ?
|
|
helpers$1.longestText(context, font, tick) :
|
|
context.measureText(tick).width;
|
|
}
|
|
|
|
var core_scale = core_element.extend({
|
|
/**
|
|
* Get the padding needed for the scale
|
|
* @method getPadding
|
|
* @private
|
|
* @returns {Padding} the necessary padding
|
|
*/
|
|
getPadding: function() {
|
|
var me = this;
|
|
return {
|
|
left: me.paddingLeft || 0,
|
|
top: me.paddingTop || 0,
|
|
right: me.paddingRight || 0,
|
|
bottom: me.paddingBottom || 0
|
|
};
|
|
},
|
|
|
|
/**
|
|
* Returns the scale tick objects ({label, major})
|
|
* @since 2.7
|
|
*/
|
|
getTicks: function() {
|
|
return this._ticks;
|
|
},
|
|
|
|
// These methods are ordered by lifecyle. Utilities then follow.
|
|
// Any function defined here is inherited by all scale types.
|
|
// Any function can be extended by the scale type
|
|
|
|
mergeTicksOptions: function() {
|
|
var ticks = this.options.ticks;
|
|
if (ticks.minor === false) {
|
|
ticks.minor = {
|
|
display: false
|
|
};
|
|
}
|
|
if (ticks.major === false) {
|
|
ticks.major = {
|
|
display: false
|
|
};
|
|
}
|
|
for (var key in ticks) {
|
|
if (key !== 'major' && key !== 'minor') {
|
|
if (typeof ticks.minor[key] === 'undefined') {
|
|
ticks.minor[key] = ticks[key];
|
|
}
|
|
if (typeof ticks.major[key] === 'undefined') {
|
|
ticks.major[key] = ticks[key];
|
|
}
|
|
}
|
|
}
|
|
},
|
|
beforeUpdate: function() {
|
|
helpers$1.callback(this.options.beforeUpdate, [this]);
|
|
},
|
|
|
|
update: function(maxWidth, maxHeight, margins) {
|
|
var me = this;
|
|
var i, ilen, labels, label, ticks, tick;
|
|
|
|
// Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
|
|
me.beforeUpdate();
|
|
|
|
// Absorb the master measurements
|
|
me.maxWidth = maxWidth;
|
|
me.maxHeight = maxHeight;
|
|
me.margins = helpers$1.extend({
|
|
left: 0,
|
|
right: 0,
|
|
top: 0,
|
|
bottom: 0
|
|
}, margins);
|
|
|
|
me._maxLabelLines = 0;
|
|
me.longestLabelWidth = 0;
|
|
me.longestTextCache = me.longestTextCache || {};
|
|
|
|
// Dimensions
|
|
me.beforeSetDimensions();
|
|
me.setDimensions();
|
|
me.afterSetDimensions();
|
|
|
|
// Data min/max
|
|
me.beforeDataLimits();
|
|
me.determineDataLimits();
|
|
me.afterDataLimits();
|
|
|
|
// Ticks - `this.ticks` is now DEPRECATED!
|
|
// Internal ticks are now stored as objects in the PRIVATE `this._ticks` member
|
|
// and must not be accessed directly from outside this class. `this.ticks` being
|
|
// around for long time and not marked as private, we can't change its structure
|
|
// without unexpected breaking changes. If you need to access the scale ticks,
|
|
// use scale.getTicks() instead.
|
|
|
|
me.beforeBuildTicks();
|
|
|
|
// New implementations should return an array of objects but for BACKWARD COMPAT,
|
|
// we still support no return (`this.ticks` internally set by calling this method).
|
|
ticks = me.buildTicks() || [];
|
|
|
|
// Allow modification of ticks in callback.
|
|
ticks = me.afterBuildTicks(ticks) || ticks;
|
|
|
|
me.beforeTickToLabelConversion();
|
|
|
|
// New implementations should return the formatted tick labels but for BACKWARD
|
|
// COMPAT, we still support no return (`this.ticks` internally changed by calling
|
|
// this method and supposed to contain only string values).
|
|
labels = me.convertTicksToLabels(ticks) || me.ticks;
|
|
|
|
me.afterTickToLabelConversion();
|
|
|
|
me.ticks = labels; // BACKWARD COMPATIBILITY
|
|
|
|
// IMPORTANT: from this point, we consider that `this.ticks` will NEVER change!
|
|
|
|
// BACKWARD COMPAT: synchronize `_ticks` with labels (so potentially `this.ticks`)
|
|
for (i = 0, ilen = labels.length; i < ilen; ++i) {
|
|
label = labels[i];
|
|
tick = ticks[i];
|
|
if (!tick) {
|
|
ticks.push(tick = {
|
|
label: label,
|
|
major: false
|
|
});
|
|
} else {
|
|
tick.label = label;
|
|
}
|
|
}
|
|
|
|
me._ticks = ticks;
|
|
|
|
// Tick Rotation
|
|
me.beforeCalculateTickRotation();
|
|
me.calculateTickRotation();
|
|
me.afterCalculateTickRotation();
|
|
// Fit
|
|
me.beforeFit();
|
|
me.fit();
|
|
me.afterFit();
|
|
//
|
|
me.afterUpdate();
|
|
|
|
return me.minSize;
|
|
|
|
},
|
|
afterUpdate: function() {
|
|
helpers$1.callback(this.options.afterUpdate, [this]);
|
|
},
|
|
|
|
//
|
|
|
|
beforeSetDimensions: function() {
|
|
helpers$1.callback(this.options.beforeSetDimensions, [this]);
|
|
},
|
|
setDimensions: function() {
|
|
var me = this;
|
|
// Set the unconstrained dimension before label rotation
|
|
if (me.isHorizontal()) {
|
|
// Reset position before calculating rotation
|
|
me.width = me.maxWidth;
|
|
me.left = 0;
|
|
me.right = me.width;
|
|
} else {
|
|
me.height = me.maxHeight;
|
|
|
|
// Reset position before calculating rotation
|
|
me.top = 0;
|
|
me.bottom = me.height;
|
|
}
|
|
|
|
// Reset padding
|
|
me.paddingLeft = 0;
|
|
me.paddingTop = 0;
|
|
me.paddingRight = 0;
|
|
me.paddingBottom = 0;
|
|
},
|
|
afterSetDimensions: function() {
|
|
helpers$1.callback(this.options.afterSetDimensions, [this]);
|
|
},
|
|
|
|
// Data limits
|
|
beforeDataLimits: function() {
|
|
helpers$1.callback(this.options.beforeDataLimits, [this]);
|
|
},
|
|
determineDataLimits: helpers$1.noop,
|
|
afterDataLimits: function() {
|
|
helpers$1.callback(this.options.afterDataLimits, [this]);
|
|
},
|
|
|
|
//
|
|
beforeBuildTicks: function() {
|
|
helpers$1.callback(this.options.beforeBuildTicks, [this]);
|
|
},
|
|
buildTicks: helpers$1.noop,
|
|
afterBuildTicks: function(ticks) {
|
|
var me = this;
|
|
// ticks is empty for old axis implementations here
|
|
if (helpers$1.isArray(ticks) && ticks.length) {
|
|
return helpers$1.callback(me.options.afterBuildTicks, [me, ticks]);
|
|
}
|
|
// Support old implementations (that modified `this.ticks` directly in buildTicks)
|
|
me.ticks = helpers$1.callback(me.options.afterBuildTicks, [me, me.ticks]) || me.ticks;
|
|
return ticks;
|
|
},
|
|
|
|
beforeTickToLabelConversion: function() {
|
|
helpers$1.callback(this.options.beforeTickToLabelConversion, [this]);
|
|
},
|
|
convertTicksToLabels: function() {
|
|
var me = this;
|
|
// Convert ticks to strings
|
|
var tickOpts = me.options.ticks;
|
|
me.ticks = me.ticks.map(tickOpts.userCallback || tickOpts.callback, this);
|
|
},
|
|
afterTickToLabelConversion: function() {
|
|
helpers$1.callback(this.options.afterTickToLabelConversion, [this]);
|
|
},
|
|
|
|
//
|
|
|
|
beforeCalculateTickRotation: function() {
|
|
helpers$1.callback(this.options.beforeCalculateTickRotation, [this]);
|
|
},
|
|
calculateTickRotation: function() {
|
|
var me = this;
|
|
var context = me.ctx;
|
|
var tickOpts = me.options.ticks;
|
|
var labels = labelsFromTicks(me._ticks);
|
|
|
|
// Get the width of each grid by calculating the difference
|
|
// between x offsets between 0 and 1.
|
|
var tickFont = helpers$1.options._parseFont(tickOpts);
|
|
context.font = tickFont.string;
|
|
|
|
var labelRotation = tickOpts.minRotation || 0;
|
|
|
|
if (labels.length && me.options.display && me.isHorizontal()) {
|
|
var originalLabelWidth = helpers$1.longestText(context, tickFont.string, labels, me.longestTextCache);
|
|
var labelWidth = originalLabelWidth;
|
|
var cosRotation, sinRotation;
|
|
|
|
// Allow 3 pixels x2 padding either side for label readability
|
|
var tickWidth = me.getPixelForTick(1) - me.getPixelForTick(0) - 6;
|
|
|
|
// Max label rotation can be set or default to 90 - also act as a loop counter
|
|
while (labelWidth > tickWidth && labelRotation < tickOpts.maxRotation) {
|
|
var angleRadians = helpers$1.toRadians(labelRotation);
|
|
cosRotation = Math.cos(angleRadians);
|
|
sinRotation = Math.sin(angleRadians);
|
|
|
|
if (sinRotation * originalLabelWidth > me.maxHeight) {
|
|
// go back one step
|
|
labelRotation--;
|
|
break;
|
|
}
|
|
|
|
labelRotation++;
|
|
labelWidth = cosRotation * originalLabelWidth;
|
|
}
|
|
}
|
|
|
|
me.labelRotation = labelRotation;
|
|
},
|
|
afterCalculateTickRotation: function() {
|
|
helpers$1.callback(this.options.afterCalculateTickRotation, [this]);
|
|
},
|
|
|
|
//
|
|
|
|
beforeFit: function() {
|
|
helpers$1.callback(this.options.beforeFit, [this]);
|
|
},
|
|
fit: function() {
|
|
var me = this;
|
|
// Reset
|
|
var minSize = me.minSize = {
|
|
width: 0,
|
|
height: 0
|
|
};
|
|
|
|
var labels = labelsFromTicks(me._ticks);
|
|
|
|
var opts = me.options;
|
|
var tickOpts = opts.ticks;
|
|
var scaleLabelOpts = opts.scaleLabel;
|
|
var gridLineOpts = opts.gridLines;
|
|
var display = me._isVisible();
|
|
var position = opts.position;
|
|
var isHorizontal = me.isHorizontal();
|
|
|
|
var parseFont = helpers$1.options._parseFont;
|
|
var tickFont = parseFont(tickOpts);
|
|
var tickMarkLength = opts.gridLines.tickMarkLength;
|
|
|
|
// Width
|
|
if (isHorizontal) {
|
|
// subtract the margins to line up with the chartArea if we are a full width scale
|
|
minSize.width = me.isFullWidth() ? me.maxWidth - me.margins.left - me.margins.right : me.maxWidth;
|
|
} else {
|
|
minSize.width = display && gridLineOpts.drawTicks ? tickMarkLength : 0;
|
|
}
|
|
|
|
// height
|
|
if (isHorizontal) {
|
|
minSize.height = display && gridLineOpts.drawTicks ? tickMarkLength : 0;
|
|
} else {
|
|
minSize.height = me.maxHeight; // fill all the height
|
|
}
|
|
|
|
// Are we showing a title for the scale?
|
|
if (scaleLabelOpts.display && display) {
|
|
var scaleLabelFont = parseFont(scaleLabelOpts);
|
|
var scaleLabelPadding = helpers$1.options.toPadding(scaleLabelOpts.padding);
|
|
var deltaHeight = scaleLabelFont.lineHeight + scaleLabelPadding.height;
|
|
|
|
if (isHorizontal) {
|
|
minSize.height += deltaHeight;
|
|
} else {
|
|
minSize.width += deltaHeight;
|
|
}
|
|
}
|
|
|
|
// Don't bother fitting the ticks if we are not showing the labels
|
|
if (tickOpts.display && display) {
|
|
var largestTextWidth = helpers$1.longestText(me.ctx, tickFont.string, labels, me.longestTextCache);
|
|
var tallestLabelHeightInLines = helpers$1.numberOfLabelLines(labels);
|
|
var lineSpace = tickFont.size * 0.5;
|
|
var tickPadding = me.options.ticks.padding;
|
|
|
|
// Store max number of lines and widest label for _autoSkip
|
|
me._maxLabelLines = tallestLabelHeightInLines;
|
|
me.longestLabelWidth = largestTextWidth;
|
|
|
|
if (isHorizontal) {
|
|
var angleRadians = helpers$1.toRadians(me.labelRotation);
|
|
var cosRotation = Math.cos(angleRadians);
|
|
var sinRotation = Math.sin(angleRadians);
|
|
|
|
// TODO - improve this calculation
|
|
var labelHeight = (sinRotation * largestTextWidth)
|
|
+ (tickFont.lineHeight * tallestLabelHeightInLines)
|
|
+ lineSpace; // padding
|
|
|
|
minSize.height = Math.min(me.maxHeight, minSize.height + labelHeight + tickPadding);
|
|
|
|
me.ctx.font = tickFont.string;
|
|
var firstLabelWidth = computeTextSize(me.ctx, labels[0], tickFont.string);
|
|
var lastLabelWidth = computeTextSize(me.ctx, labels[labels.length - 1], tickFont.string);
|
|
var offsetLeft = me.getPixelForTick(0) - me.left;
|
|
var offsetRight = me.right - me.getPixelForTick(labels.length - 1);
|
|
var paddingLeft, paddingRight;
|
|
|
|
// Ensure that our ticks are always inside the canvas. When rotated, ticks are right aligned
|
|
// which means that the right padding is dominated by the font height
|
|
if (me.labelRotation !== 0) {
|
|
paddingLeft = position === 'bottom' ? (cosRotation * firstLabelWidth) : (cosRotation * lineSpace);
|
|
paddingRight = position === 'bottom' ? (cosRotation * lineSpace) : (cosRotation * lastLabelWidth);
|
|
} else {
|
|
paddingLeft = firstLabelWidth / 2;
|
|
paddingRight = lastLabelWidth / 2;
|
|
}
|
|
me.paddingLeft = Math.max(paddingLeft - offsetLeft, 0) + 3; // add 3 px to move away from canvas edges
|
|
me.paddingRight = Math.max(paddingRight - offsetRight, 0) + 3;
|
|
} else {
|
|
// A vertical axis is more constrained by the width. Labels are the
|
|
// dominant factor here, so get that length first and account for padding
|
|
if (tickOpts.mirror) {
|
|
largestTextWidth = 0;
|
|
} else {
|
|
// use lineSpace for consistency with horizontal axis
|
|
// tickPadding is not implemented for horizontal
|
|
largestTextWidth += tickPadding + lineSpace;
|
|
}
|
|
|
|
minSize.width = Math.min(me.maxWidth, minSize.width + largestTextWidth);
|
|
|
|
me.paddingTop = tickFont.size / 2;
|
|
me.paddingBottom = tickFont.size / 2;
|
|
}
|
|
}
|
|
|
|
me.handleMargins();
|
|
|
|
me.width = minSize.width;
|
|
me.height = minSize.height;
|
|
},
|
|
|
|
/**
|
|
* Handle margins and padding interactions
|
|
* @private
|
|
*/
|
|
handleMargins: function() {
|
|
var me = this;
|
|
if (me.margins) {
|
|
me.paddingLeft = Math.max(me.paddingLeft - me.margins.left, 0);
|
|
me.paddingTop = Math.max(me.paddingTop - me.margins.top, 0);
|
|
me.paddingRight = Math.max(me.paddingRight - me.margins.right, 0);
|
|
me.paddingBottom = Math.max(me.paddingBottom - me.margins.bottom, 0);
|
|
}
|
|
},
|
|
|
|
afterFit: function() {
|
|
helpers$1.callback(this.options.afterFit, [this]);
|
|
},
|
|
|
|
// Shared Methods
|
|
isHorizontal: function() {
|
|
return this.options.position === 'top' || this.options.position === 'bottom';
|
|
},
|
|
isFullWidth: function() {
|
|
return (this.options.fullWidth);
|
|
},
|
|
|
|
// Get the correct value. NaN bad inputs, If the value type is object get the x or y based on whether we are horizontal or not
|
|
getRightValue: function(rawValue) {
|
|
// Null and undefined values first
|
|
if (helpers$1.isNullOrUndef(rawValue)) {
|
|
return NaN;
|
|
}
|
|
// isNaN(object) returns true, so make sure NaN is checking for a number; Discard Infinite values
|
|
if ((typeof rawValue === 'number' || rawValue instanceof Number) && !isFinite(rawValue)) {
|
|
return NaN;
|
|
}
|
|
// If it is in fact an object, dive in one more level
|
|
if (rawValue) {
|
|
if (this.isHorizontal()) {
|
|
if (rawValue.x !== undefined) {
|
|
return this.getRightValue(rawValue.x);
|
|
}
|
|
} else if (rawValue.y !== undefined) {
|
|
return this.getRightValue(rawValue.y);
|
|
}
|
|
}
|
|
|
|
// Value is good, return it
|
|
return rawValue;
|
|
},
|
|
|
|
/**
|
|
* Used to get the value to display in the tooltip for the data at the given index
|
|
* @param index
|
|
* @param datasetIndex
|
|
*/
|
|
getLabelForIndex: helpers$1.noop,
|
|
|
|
/**
|
|
* Returns the location of the given data point. Value can either be an index or a numerical value
|
|
* The coordinate (0, 0) is at the upper-left corner of the canvas
|
|
* @param value
|
|
* @param index
|
|
* @param datasetIndex
|
|
*/
|
|
getPixelForValue: helpers$1.noop,
|
|
|
|
/**
|
|
* Used to get the data value from a given pixel. This is the inverse of getPixelForValue
|
|
* The coordinate (0, 0) is at the upper-left corner of the canvas
|
|
* @param pixel
|
|
*/
|
|
getValueForPixel: helpers$1.noop,
|
|
|
|
/**
|
|
* Returns the location of the tick at the given index
|
|
* The coordinate (0, 0) is at the upper-left corner of the canvas
|
|
*/
|
|
getPixelForTick: function(index) {
|
|
var me = this;
|
|
var offset = me.options.offset;
|
|
if (me.isHorizontal()) {
|
|
var innerWidth = me.width - (me.paddingLeft + me.paddingRight);
|
|
var tickWidth = innerWidth / Math.max((me._ticks.length - (offset ? 0 : 1)), 1);
|
|
var pixel = (tickWidth * index) + me.paddingLeft;
|
|
|
|
if (offset) {
|
|
pixel += tickWidth / 2;
|
|
}
|
|
|
|
var finalVal = me.left + pixel;
|
|
finalVal += me.isFullWidth() ? me.margins.left : 0;
|
|
return finalVal;
|
|
}
|
|
var innerHeight = me.height - (me.paddingTop + me.paddingBottom);
|
|
return me.top + (index * (innerHeight / (me._ticks.length - 1)));
|
|
},
|
|
|
|
/**
|
|
* Utility for getting the pixel location of a percentage of scale
|
|
* The coordinate (0, 0) is at the upper-left corner of the canvas
|
|
*/
|
|
getPixelForDecimal: function(decimal) {
|
|
var me = this;
|
|
if (me.isHorizontal()) {
|
|
var innerWidth = me.width - (me.paddingLeft + me.paddingRight);
|
|
var valueOffset = (innerWidth * decimal) + me.paddingLeft;
|
|
|
|
var finalVal = me.left + valueOffset;
|
|
finalVal += me.isFullWidth() ? me.margins.left : 0;
|
|
return finalVal;
|
|
}
|
|
return me.top + (decimal * me.height);
|
|
},
|
|
|
|
/**
|
|
* Returns the pixel for the minimum chart value
|
|
* The coordinate (0, 0) is at the upper-left corner of the canvas
|
|
*/
|
|
getBasePixel: function() {
|
|
return this.getPixelForValue(this.getBaseValue());
|
|
},
|
|
|
|
getBaseValue: function() {
|
|
var me = this;
|
|
var min = me.min;
|
|
var max = me.max;
|
|
|
|
return me.beginAtZero ? 0 :
|
|
min < 0 && max < 0 ? max :
|
|
min > 0 && max > 0 ? min :
|
|
0;
|
|
},
|
|
|
|
/**
|
|
* Returns a subset of ticks to be plotted to avoid overlapping labels.
|
|
* @private
|
|
*/
|
|
_autoSkip: function(ticks) {
|
|
var me = this;
|
|
var isHorizontal = me.isHorizontal();
|
|
var optionTicks = me.options.ticks.minor;
|
|
var tickCount = ticks.length;
|
|
var skipRatio = false;
|
|
var maxTicks = optionTicks.maxTicksLimit;
|
|
|
|
// Total space needed to display all ticks. First and last ticks are
|
|
// drawn as their center at end of axis, so tickCount-1
|
|
var ticksLength = me._tickSize() * (tickCount - 1);
|
|
|
|
// Axis length
|
|
var axisLength = isHorizontal
|
|
? me.width - (me.paddingLeft + me.paddingRight)
|
|
: me.height - (me.paddingTop + me.PaddingBottom);
|
|
|
|
var result = [];
|
|
var i, tick;
|
|
|
|
if (ticksLength > axisLength) {
|
|
skipRatio = 1 + Math.floor(ticksLength / axisLength);
|
|
}
|
|
|
|
// if they defined a max number of optionTicks,
|
|
// increase skipRatio until that number is met
|
|
if (tickCount > maxTicks) {
|
|
skipRatio = Math.max(skipRatio, 1 + Math.floor(tickCount / maxTicks));
|
|
}
|
|
|
|
for (i = 0; i < tickCount; i++) {
|
|
tick = ticks[i];
|
|
|
|
if (skipRatio > 1 && i % skipRatio > 0) {
|
|
// leave tick in place but make sure it's not displayed (#4635)
|
|
delete tick.label;
|
|
}
|
|
result.push(tick);
|
|
}
|
|
return result;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_tickSize: function() {
|
|
var me = this;
|
|
var isHorizontal = me.isHorizontal();
|
|
var optionTicks = me.options.ticks.minor;
|
|
|
|
// Calculate space needed by label in axis direction.
|
|
var rot = helpers$1.toRadians(me.labelRotation);
|
|
var cos = Math.abs(Math.cos(rot));
|
|
var sin = Math.abs(Math.sin(rot));
|
|
|
|
var padding = optionTicks.autoSkipPadding || 0;
|
|
var w = (me.longestLabelWidth + padding) || 0;
|
|
|
|
var tickFont = helpers$1.options._parseFont(optionTicks);
|
|
var h = (me._maxLabelLines * tickFont.lineHeight + padding) || 0;
|
|
|
|
// Calculate space needed for 1 tick in axis direction.
|
|
return isHorizontal
|
|
? h * cos > w * sin ? w / cos : h / sin
|
|
: h * sin < w * cos ? h / cos : w / sin;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_isVisible: function() {
|
|
var me = this;
|
|
var chart = me.chart;
|
|
var display = me.options.display;
|
|
var i, ilen, meta;
|
|
|
|
if (display !== 'auto') {
|
|
return !!display;
|
|
}
|
|
|
|
// When 'auto', the scale is visible if at least one associated dataset is visible.
|
|
for (i = 0, ilen = chart.data.datasets.length; i < ilen; ++i) {
|
|
if (chart.isDatasetVisible(i)) {
|
|
meta = chart.getDatasetMeta(i);
|
|
if (meta.xAxisID === me.id || meta.yAxisID === me.id) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
|
|
return false;
|
|
},
|
|
|
|
/**
|
|
* Actually draw the scale on the canvas
|
|
* @param {object} chartArea - the area of the chart to draw full grid lines on
|
|
*/
|
|
draw: function(chartArea) {
|
|
var me = this;
|
|
var options = me.options;
|
|
|
|
if (!me._isVisible()) {
|
|
return;
|
|
}
|
|
|
|
var chart = me.chart;
|
|
var context = me.ctx;
|
|
var globalDefaults = core_defaults.global;
|
|
var defaultFontColor = globalDefaults.defaultFontColor;
|
|
var optionTicks = options.ticks.minor;
|
|
var optionMajorTicks = options.ticks.major || optionTicks;
|
|
var gridLines = options.gridLines;
|
|
var scaleLabel = options.scaleLabel;
|
|
var position = options.position;
|
|
|
|
var isRotated = me.labelRotation !== 0;
|
|
var isMirrored = optionTicks.mirror;
|
|
var isHorizontal = me.isHorizontal();
|
|
|
|
var parseFont = helpers$1.options._parseFont;
|
|
var ticks = optionTicks.display && optionTicks.autoSkip ? me._autoSkip(me.getTicks()) : me.getTicks();
|
|
var tickFontColor = valueOrDefault$9(optionTicks.fontColor, defaultFontColor);
|
|
var tickFont = parseFont(optionTicks);
|
|
var lineHeight = tickFont.lineHeight;
|
|
var majorTickFontColor = valueOrDefault$9(optionMajorTicks.fontColor, defaultFontColor);
|
|
var majorTickFont = parseFont(optionMajorTicks);
|
|
var tickPadding = optionTicks.padding;
|
|
var labelOffset = optionTicks.labelOffset;
|
|
|
|
var tl = gridLines.drawTicks ? gridLines.tickMarkLength : 0;
|
|
|
|
var scaleLabelFontColor = valueOrDefault$9(scaleLabel.fontColor, defaultFontColor);
|
|
var scaleLabelFont = parseFont(scaleLabel);
|
|
var scaleLabelPadding = helpers$1.options.toPadding(scaleLabel.padding);
|
|
var labelRotationRadians = helpers$1.toRadians(me.labelRotation);
|
|
|
|
var itemsToDraw = [];
|
|
|
|
var axisWidth = gridLines.drawBorder ? valueAtIndexOrDefault(gridLines.lineWidth, 0, 0) : 0;
|
|
var alignPixel = helpers$1._alignPixel;
|
|
var borderValue, tickStart, tickEnd;
|
|
|
|
if (position === 'top') {
|
|
borderValue = alignPixel(chart, me.bottom, axisWidth);
|
|
tickStart = me.bottom - tl;
|
|
tickEnd = borderValue - axisWidth / 2;
|
|
} else if (position === 'bottom') {
|
|
borderValue = alignPixel(chart, me.top, axisWidth);
|
|
tickStart = borderValue + axisWidth / 2;
|
|
tickEnd = me.top + tl;
|
|
} else if (position === 'left') {
|
|
borderValue = alignPixel(chart, me.right, axisWidth);
|
|
tickStart = me.right - tl;
|
|
tickEnd = borderValue - axisWidth / 2;
|
|
} else {
|
|
borderValue = alignPixel(chart, me.left, axisWidth);
|
|
tickStart = borderValue + axisWidth / 2;
|
|
tickEnd = me.left + tl;
|
|
}
|
|
|
|
var epsilon = 0.0000001; // 0.0000001 is margin in pixels for Accumulated error.
|
|
|
|
helpers$1.each(ticks, function(tick, index) {
|
|
// autoskipper skipped this tick (#4635)
|
|
if (helpers$1.isNullOrUndef(tick.label)) {
|
|
return;
|
|
}
|
|
|
|
var label = tick.label;
|
|
var lineWidth, lineColor, borderDash, borderDashOffset;
|
|
if (index === me.zeroLineIndex && options.offset === gridLines.offsetGridLines) {
|
|
// Draw the first index specially
|
|
lineWidth = gridLines.zeroLineWidth;
|
|
lineColor = gridLines.zeroLineColor;
|
|
borderDash = gridLines.zeroLineBorderDash || [];
|
|
borderDashOffset = gridLines.zeroLineBorderDashOffset || 0.0;
|
|
} else {
|
|
lineWidth = valueAtIndexOrDefault(gridLines.lineWidth, index);
|
|
lineColor = valueAtIndexOrDefault(gridLines.color, index);
|
|
borderDash = gridLines.borderDash || [];
|
|
borderDashOffset = gridLines.borderDashOffset || 0.0;
|
|
}
|
|
|
|
// Common properties
|
|
var tx1, ty1, tx2, ty2, x1, y1, x2, y2, labelX, labelY, textOffset, textAlign;
|
|
var labelCount = helpers$1.isArray(label) ? label.length : 1;
|
|
var lineValue = getPixelForGridLine(me, index, gridLines.offsetGridLines);
|
|
|
|
if (isHorizontal) {
|
|
var labelYOffset = tl + tickPadding;
|
|
|
|
if (lineValue < me.left - epsilon) {
|
|
lineColor = 'rgba(0,0,0,0)';
|
|
}
|
|
|
|
tx1 = tx2 = x1 = x2 = alignPixel(chart, lineValue, lineWidth);
|
|
ty1 = tickStart;
|
|
ty2 = tickEnd;
|
|
labelX = me.getPixelForTick(index) + labelOffset; // x values for optionTicks (need to consider offsetLabel option)
|
|
|
|
if (position === 'top') {
|
|
y1 = alignPixel(chart, chartArea.top, axisWidth) + axisWidth / 2;
|
|
y2 = chartArea.bottom;
|
|
textOffset = ((!isRotated ? 0.5 : 1) - labelCount) * lineHeight;
|
|
textAlign = !isRotated ? 'center' : 'left';
|
|
labelY = me.bottom - labelYOffset;
|
|
} else {
|
|
y1 = chartArea.top;
|
|
y2 = alignPixel(chart, chartArea.bottom, axisWidth) - axisWidth / 2;
|
|
textOffset = (!isRotated ? 0.5 : 0) * lineHeight;
|
|
textAlign = !isRotated ? 'center' : 'right';
|
|
labelY = me.top + labelYOffset;
|
|
}
|
|
} else {
|
|
var labelXOffset = (isMirrored ? 0 : tl) + tickPadding;
|
|
|
|
if (lineValue < me.top - epsilon) {
|
|
lineColor = 'rgba(0,0,0,0)';
|
|
}
|
|
|
|
tx1 = tickStart;
|
|
tx2 = tickEnd;
|
|
ty1 = ty2 = y1 = y2 = alignPixel(chart, lineValue, lineWidth);
|
|
labelY = me.getPixelForTick(index) + labelOffset;
|
|
textOffset = (1 - labelCount) * lineHeight / 2;
|
|
|
|
if (position === 'left') {
|
|
x1 = alignPixel(chart, chartArea.left, axisWidth) + axisWidth / 2;
|
|
x2 = chartArea.right;
|
|
textAlign = isMirrored ? 'left' : 'right';
|
|
labelX = me.right - labelXOffset;
|
|
} else {
|
|
x1 = chartArea.left;
|
|
x2 = alignPixel(chart, chartArea.right, axisWidth) - axisWidth / 2;
|
|
textAlign = isMirrored ? 'right' : 'left';
|
|
labelX = me.left + labelXOffset;
|
|
}
|
|
}
|
|
|
|
itemsToDraw.push({
|
|
tx1: tx1,
|
|
ty1: ty1,
|
|
tx2: tx2,
|
|
ty2: ty2,
|
|
x1: x1,
|
|
y1: y1,
|
|
x2: x2,
|
|
y2: y2,
|
|
labelX: labelX,
|
|
labelY: labelY,
|
|
glWidth: lineWidth,
|
|
glColor: lineColor,
|
|
glBorderDash: borderDash,
|
|
glBorderDashOffset: borderDashOffset,
|
|
rotation: -1 * labelRotationRadians,
|
|
label: label,
|
|
major: tick.major,
|
|
textOffset: textOffset,
|
|
textAlign: textAlign
|
|
});
|
|
});
|
|
|
|
// Draw all of the tick labels, tick marks, and grid lines at the correct places
|
|
helpers$1.each(itemsToDraw, function(itemToDraw) {
|
|
var glWidth = itemToDraw.glWidth;
|
|
var glColor = itemToDraw.glColor;
|
|
|
|
if (gridLines.display && glWidth && glColor) {
|
|
context.save();
|
|
context.lineWidth = glWidth;
|
|
context.strokeStyle = glColor;
|
|
if (context.setLineDash) {
|
|
context.setLineDash(itemToDraw.glBorderDash);
|
|
context.lineDashOffset = itemToDraw.glBorderDashOffset;
|
|
}
|
|
|
|
context.beginPath();
|
|
|
|
if (gridLines.drawTicks) {
|
|
context.moveTo(itemToDraw.tx1, itemToDraw.ty1);
|
|
context.lineTo(itemToDraw.tx2, itemToDraw.ty2);
|
|
}
|
|
|
|
if (gridLines.drawOnChartArea) {
|
|
context.moveTo(itemToDraw.x1, itemToDraw.y1);
|
|
context.lineTo(itemToDraw.x2, itemToDraw.y2);
|
|
}
|
|
|
|
context.stroke();
|
|
context.restore();
|
|
}
|
|
|
|
if (optionTicks.display) {
|
|
// Make sure we draw text in the correct color and font
|
|
context.save();
|
|
context.translate(itemToDraw.labelX, itemToDraw.labelY);
|
|
context.rotate(itemToDraw.rotation);
|
|
context.font = itemToDraw.major ? majorTickFont.string : tickFont.string;
|
|
context.fillStyle = itemToDraw.major ? majorTickFontColor : tickFontColor;
|
|
context.textBaseline = 'middle';
|
|
context.textAlign = itemToDraw.textAlign;
|
|
|
|
var label = itemToDraw.label;
|
|
var y = itemToDraw.textOffset;
|
|
if (helpers$1.isArray(label)) {
|
|
for (var i = 0; i < label.length; ++i) {
|
|
// We just make sure the multiline element is a string here..
|
|
context.fillText('' + label[i], 0, y);
|
|
y += lineHeight;
|
|
}
|
|
} else {
|
|
context.fillText(label, 0, y);
|
|
}
|
|
context.restore();
|
|
}
|
|
});
|
|
|
|
if (scaleLabel.display) {
|
|
// Draw the scale label
|
|
var scaleLabelX;
|
|
var scaleLabelY;
|
|
var rotation = 0;
|
|
var halfLineHeight = scaleLabelFont.lineHeight / 2;
|
|
|
|
if (isHorizontal) {
|
|
scaleLabelX = me.left + ((me.right - me.left) / 2); // midpoint of the width
|
|
scaleLabelY = position === 'bottom'
|
|
? me.bottom - halfLineHeight - scaleLabelPadding.bottom
|
|
: me.top + halfLineHeight + scaleLabelPadding.top;
|
|
} else {
|
|
var isLeft = position === 'left';
|
|
scaleLabelX = isLeft
|
|
? me.left + halfLineHeight + scaleLabelPadding.top
|
|
: me.right - halfLineHeight - scaleLabelPadding.top;
|
|
scaleLabelY = me.top + ((me.bottom - me.top) / 2);
|
|
rotation = isLeft ? -0.5 * Math.PI : 0.5 * Math.PI;
|
|
}
|
|
|
|
context.save();
|
|
context.translate(scaleLabelX, scaleLabelY);
|
|
context.rotate(rotation);
|
|
context.textAlign = 'center';
|
|
context.textBaseline = 'middle';
|
|
context.fillStyle = scaleLabelFontColor; // render in correct colour
|
|
context.font = scaleLabelFont.string;
|
|
context.fillText(scaleLabel.labelString, 0, 0);
|
|
context.restore();
|
|
}
|
|
|
|
if (axisWidth) {
|
|
// Draw the line at the edge of the axis
|
|
var firstLineWidth = axisWidth;
|
|
var lastLineWidth = valueAtIndexOrDefault(gridLines.lineWidth, ticks.length - 1, 0);
|
|
var x1, x2, y1, y2;
|
|
|
|
if (isHorizontal) {
|
|
x1 = alignPixel(chart, me.left, firstLineWidth) - firstLineWidth / 2;
|
|
x2 = alignPixel(chart, me.right, lastLineWidth) + lastLineWidth / 2;
|
|
y1 = y2 = borderValue;
|
|
} else {
|
|
y1 = alignPixel(chart, me.top, firstLineWidth) - firstLineWidth / 2;
|
|
y2 = alignPixel(chart, me.bottom, lastLineWidth) + lastLineWidth / 2;
|
|
x1 = x2 = borderValue;
|
|
}
|
|
|
|
context.lineWidth = axisWidth;
|
|
context.strokeStyle = valueAtIndexOrDefault(gridLines.color, 0);
|
|
context.beginPath();
|
|
context.moveTo(x1, y1);
|
|
context.lineTo(x2, y2);
|
|
context.stroke();
|
|
}
|
|
}
|
|
});
|
|
|
|
var defaultConfig = {
|
|
position: 'bottom'
|
|
};
|
|
|
|
var scale_category = core_scale.extend({
|
|
/**
|
|
* Internal function to get the correct labels. If data.xLabels or data.yLabels are defined, use those
|
|
* else fall back to data.labels
|
|
* @private
|
|
*/
|
|
getLabels: function() {
|
|
var data = this.chart.data;
|
|
return this.options.labels || (this.isHorizontal() ? data.xLabels : data.yLabels) || data.labels;
|
|
},
|
|
|
|
determineDataLimits: function() {
|
|
var me = this;
|
|
var labels = me.getLabels();
|
|
me.minIndex = 0;
|
|
me.maxIndex = labels.length - 1;
|
|
var findIndex;
|
|
|
|
if (me.options.ticks.min !== undefined) {
|
|
// user specified min value
|
|
findIndex = labels.indexOf(me.options.ticks.min);
|
|
me.minIndex = findIndex !== -1 ? findIndex : me.minIndex;
|
|
}
|
|
|
|
if (me.options.ticks.max !== undefined) {
|
|
// user specified max value
|
|
findIndex = labels.indexOf(me.options.ticks.max);
|
|
me.maxIndex = findIndex !== -1 ? findIndex : me.maxIndex;
|
|
}
|
|
|
|
me.min = labels[me.minIndex];
|
|
me.max = labels[me.maxIndex];
|
|
},
|
|
|
|
buildTicks: function() {
|
|
var me = this;
|
|
var labels = me.getLabels();
|
|
// If we are viewing some subset of labels, slice the original array
|
|
me.ticks = (me.minIndex === 0 && me.maxIndex === labels.length - 1) ? labels : labels.slice(me.minIndex, me.maxIndex + 1);
|
|
},
|
|
|
|
getLabelForIndex: function(index, datasetIndex) {
|
|
var me = this;
|
|
var chart = me.chart;
|
|
|
|
if (chart.getDatasetMeta(datasetIndex).controller._getValueScaleId() === me.id) {
|
|
return me.getRightValue(chart.data.datasets[datasetIndex].data[index]);
|
|
}
|
|
|
|
return me.ticks[index - me.minIndex];
|
|
},
|
|
|
|
// Used to get data value locations. Value can either be an index or a numerical value
|
|
getPixelForValue: function(value, index) {
|
|
var me = this;
|
|
var offset = me.options.offset;
|
|
// 1 is added because we need the length but we have the indexes
|
|
var offsetAmt = Math.max((me.maxIndex + 1 - me.minIndex - (offset ? 0 : 1)), 1);
|
|
|
|
// If value is a data object, then index is the index in the data array,
|
|
// not the index of the scale. We need to change that.
|
|
var valueCategory;
|
|
if (value !== undefined && value !== null) {
|
|
valueCategory = me.isHorizontal() ? value.x : value.y;
|
|
}
|
|
if (valueCategory !== undefined || (value !== undefined && isNaN(index))) {
|
|
var labels = me.getLabels();
|
|
value = valueCategory || value;
|
|
var idx = labels.indexOf(value);
|
|
index = idx !== -1 ? idx : index;
|
|
}
|
|
|
|
if (me.isHorizontal()) {
|
|
var valueWidth = me.width / offsetAmt;
|
|
var widthOffset = (valueWidth * (index - me.minIndex));
|
|
|
|
if (offset) {
|
|
widthOffset += (valueWidth / 2);
|
|
}
|
|
|
|
return me.left + widthOffset;
|
|
}
|
|
var valueHeight = me.height / offsetAmt;
|
|
var heightOffset = (valueHeight * (index - me.minIndex));
|
|
|
|
if (offset) {
|
|
heightOffset += (valueHeight / 2);
|
|
}
|
|
|
|
return me.top + heightOffset;
|
|
},
|
|
|
|
getPixelForTick: function(index) {
|
|
return this.getPixelForValue(this.ticks[index], index + this.minIndex, null);
|
|
},
|
|
|
|
getValueForPixel: function(pixel) {
|
|
var me = this;
|
|
var offset = me.options.offset;
|
|
var value;
|
|
var offsetAmt = Math.max((me._ticks.length - (offset ? 0 : 1)), 1);
|
|
var horz = me.isHorizontal();
|
|
var valueDimension = (horz ? me.width : me.height) / offsetAmt;
|
|
|
|
pixel -= horz ? me.left : me.top;
|
|
|
|
if (offset) {
|
|
pixel -= (valueDimension / 2);
|
|
}
|
|
|
|
if (pixel <= 0) {
|
|
value = 0;
|
|
} else {
|
|
value = Math.round(pixel / valueDimension);
|
|
}
|
|
|
|
return value + me.minIndex;
|
|
},
|
|
|
|
getBasePixel: function() {
|
|
return this.bottom;
|
|
}
|
|
});
|
|
|
|
// INTERNAL: static default options, registered in src/index.js
|
|
var _defaults = defaultConfig;
|
|
scale_category._defaults = _defaults;
|
|
|
|
var noop = helpers$1.noop;
|
|
var isNullOrUndef = helpers$1.isNullOrUndef;
|
|
|
|
/**
|
|
* Generate a set of linear ticks
|
|
* @param generationOptions the options used to generate the ticks
|
|
* @param dataRange the range of the data
|
|
* @returns {number[]} array of tick values
|
|
*/
|
|
function generateTicks(generationOptions, dataRange) {
|
|
var ticks = [];
|
|
// To get a "nice" value for the tick spacing, we will use the appropriately named
|
|
// "nice number" algorithm. See https://stackoverflow.com/questions/8506881/nice-label-algorithm-for-charts-with-minimum-ticks
|
|
// for details.
|
|
|
|
var MIN_SPACING = 1e-14;
|
|
var stepSize = generationOptions.stepSize;
|
|
var unit = stepSize || 1;
|
|
var maxNumSpaces = generationOptions.maxTicks - 1;
|
|
var min = generationOptions.min;
|
|
var max = generationOptions.max;
|
|
var precision = generationOptions.precision;
|
|
var rmin = dataRange.min;
|
|
var rmax = dataRange.max;
|
|
var spacing = helpers$1.niceNum((rmax - rmin) / maxNumSpaces / unit) * unit;
|
|
var factor, niceMin, niceMax, numSpaces;
|
|
|
|
// Beyond MIN_SPACING floating point numbers being to lose precision
|
|
// such that we can't do the math necessary to generate ticks
|
|
if (spacing < MIN_SPACING && isNullOrUndef(min) && isNullOrUndef(max)) {
|
|
return [rmin, rmax];
|
|
}
|
|
|
|
numSpaces = Math.ceil(rmax / spacing) - Math.floor(rmin / spacing);
|
|
if (numSpaces > maxNumSpaces) {
|
|
// If the calculated num of spaces exceeds maxNumSpaces, recalculate it
|
|
spacing = helpers$1.niceNum(numSpaces * spacing / maxNumSpaces / unit) * unit;
|
|
}
|
|
|
|
if (stepSize || isNullOrUndef(precision)) {
|
|
// If a precision is not specified, calculate factor based on spacing
|
|
factor = Math.pow(10, helpers$1._decimalPlaces(spacing));
|
|
} else {
|
|
// If the user specified a precision, round to that number of decimal places
|
|
factor = Math.pow(10, precision);
|
|
spacing = Math.ceil(spacing * factor) / factor;
|
|
}
|
|
|
|
niceMin = Math.floor(rmin / spacing) * spacing;
|
|
niceMax = Math.ceil(rmax / spacing) * spacing;
|
|
|
|
// If min, max and stepSize is set and they make an evenly spaced scale use it.
|
|
if (stepSize) {
|
|
// If very close to our whole number, use it.
|
|
if (!isNullOrUndef(min) && helpers$1.almostWhole(min / spacing, spacing / 1000)) {
|
|
niceMin = min;
|
|
}
|
|
if (!isNullOrUndef(max) && helpers$1.almostWhole(max / spacing, spacing / 1000)) {
|
|
niceMax = max;
|
|
}
|
|
}
|
|
|
|
numSpaces = (niceMax - niceMin) / spacing;
|
|
// If very close to our rounded value, use it.
|
|
if (helpers$1.almostEquals(numSpaces, Math.round(numSpaces), spacing / 1000)) {
|
|
numSpaces = Math.round(numSpaces);
|
|
} else {
|
|
numSpaces = Math.ceil(numSpaces);
|
|
}
|
|
|
|
niceMin = Math.round(niceMin * factor) / factor;
|
|
niceMax = Math.round(niceMax * factor) / factor;
|
|
ticks.push(isNullOrUndef(min) ? niceMin : min);
|
|
for (var j = 1; j < numSpaces; ++j) {
|
|
ticks.push(Math.round((niceMin + j * spacing) * factor) / factor);
|
|
}
|
|
ticks.push(isNullOrUndef(max) ? niceMax : max);
|
|
|
|
return ticks;
|
|
}
|
|
|
|
var scale_linearbase = core_scale.extend({
|
|
getRightValue: function(value) {
|
|
if (typeof value === 'string') {
|
|
return +value;
|
|
}
|
|
return core_scale.prototype.getRightValue.call(this, value);
|
|
},
|
|
|
|
handleTickRangeOptions: function() {
|
|
var me = this;
|
|
var opts = me.options;
|
|
var tickOpts = opts.ticks;
|
|
|
|
// If we are forcing it to begin at 0, but 0 will already be rendered on the chart,
|
|
// do nothing since that would make the chart weird. If the user really wants a weird chart
|
|
// axis, they can manually override it
|
|
if (tickOpts.beginAtZero) {
|
|
var minSign = helpers$1.sign(me.min);
|
|
var maxSign = helpers$1.sign(me.max);
|
|
|
|
if (minSign < 0 && maxSign < 0) {
|
|
// move the top up to 0
|
|
me.max = 0;
|
|
} else if (minSign > 0 && maxSign > 0) {
|
|
// move the bottom down to 0
|
|
me.min = 0;
|
|
}
|
|
}
|
|
|
|
var setMin = tickOpts.min !== undefined || tickOpts.suggestedMin !== undefined;
|
|
var setMax = tickOpts.max !== undefined || tickOpts.suggestedMax !== undefined;
|
|
|
|
if (tickOpts.min !== undefined) {
|
|
me.min = tickOpts.min;
|
|
} else if (tickOpts.suggestedMin !== undefined) {
|
|
if (me.min === null) {
|
|
me.min = tickOpts.suggestedMin;
|
|
} else {
|
|
me.min = Math.min(me.min, tickOpts.suggestedMin);
|
|
}
|
|
}
|
|
|
|
if (tickOpts.max !== undefined) {
|
|
me.max = tickOpts.max;
|
|
} else if (tickOpts.suggestedMax !== undefined) {
|
|
if (me.max === null) {
|
|
me.max = tickOpts.suggestedMax;
|
|
} else {
|
|
me.max = Math.max(me.max, tickOpts.suggestedMax);
|
|
}
|
|
}
|
|
|
|
if (setMin !== setMax) {
|
|
// We set the min or the max but not both.
|
|
// So ensure that our range is good
|
|
// Inverted or 0 length range can happen when
|
|
// ticks.min is set, and no datasets are visible
|
|
if (me.min >= me.max) {
|
|
if (setMin) {
|
|
me.max = me.min + 1;
|
|
} else {
|
|
me.min = me.max - 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (me.min === me.max) {
|
|
me.max++;
|
|
|
|
if (!tickOpts.beginAtZero) {
|
|
me.min--;
|
|
}
|
|
}
|
|
},
|
|
|
|
getTickLimit: function() {
|
|
var me = this;
|
|
var tickOpts = me.options.ticks;
|
|
var stepSize = tickOpts.stepSize;
|
|
var maxTicksLimit = tickOpts.maxTicksLimit;
|
|
var maxTicks;
|
|
|
|
if (stepSize) {
|
|
maxTicks = Math.ceil(me.max / stepSize) - Math.floor(me.min / stepSize) + 1;
|
|
} else {
|
|
maxTicks = me._computeTickLimit();
|
|
maxTicksLimit = maxTicksLimit || 11;
|
|
}
|
|
|
|
if (maxTicksLimit) {
|
|
maxTicks = Math.min(maxTicksLimit, maxTicks);
|
|
}
|
|
|
|
return maxTicks;
|
|
},
|
|
|
|
_computeTickLimit: function() {
|
|
return Number.POSITIVE_INFINITY;
|
|
},
|
|
|
|
handleDirectionalChanges: noop,
|
|
|
|
buildTicks: function() {
|
|
var me = this;
|
|
var opts = me.options;
|
|
var tickOpts = opts.ticks;
|
|
|
|
// Figure out what the max number of ticks we can support it is based on the size of
|
|
// the axis area. For now, we say that the minimum tick spacing in pixels must be 40
|
|
// We also limit the maximum number of ticks to 11 which gives a nice 10 squares on
|
|
// the graph. Make sure we always have at least 2 ticks
|
|
var maxTicks = me.getTickLimit();
|
|
maxTicks = Math.max(2, maxTicks);
|
|
|
|
var numericGeneratorOptions = {
|
|
maxTicks: maxTicks,
|
|
min: tickOpts.min,
|
|
max: tickOpts.max,
|
|
precision: tickOpts.precision,
|
|
stepSize: helpers$1.valueOrDefault(tickOpts.fixedStepSize, tickOpts.stepSize)
|
|
};
|
|
var ticks = me.ticks = generateTicks(numericGeneratorOptions, me);
|
|
|
|
me.handleDirectionalChanges();
|
|
|
|
// At this point, we need to update our max and min given the tick values since we have expanded the
|
|
// range of the scale
|
|
me.max = helpers$1.max(ticks);
|
|
me.min = helpers$1.min(ticks);
|
|
|
|
if (tickOpts.reverse) {
|
|
ticks.reverse();
|
|
|
|
me.start = me.max;
|
|
me.end = me.min;
|
|
} else {
|
|
me.start = me.min;
|
|
me.end = me.max;
|
|
}
|
|
},
|
|
|
|
convertTicksToLabels: function() {
|
|
var me = this;
|
|
me.ticksAsNumbers = me.ticks.slice();
|
|
me.zeroLineIndex = me.ticks.indexOf(0);
|
|
|
|
core_scale.prototype.convertTicksToLabels.call(me);
|
|
}
|
|
});
|
|
|
|
var defaultConfig$1 = {
|
|
position: 'left',
|
|
ticks: {
|
|
callback: core_ticks.formatters.linear
|
|
}
|
|
};
|
|
|
|
var scale_linear = scale_linearbase.extend({
|
|
determineDataLimits: function() {
|
|
var me = this;
|
|
var opts = me.options;
|
|
var chart = me.chart;
|
|
var data = chart.data;
|
|
var datasets = data.datasets;
|
|
var isHorizontal = me.isHorizontal();
|
|
var DEFAULT_MIN = 0;
|
|
var DEFAULT_MAX = 1;
|
|
|
|
function IDMatches(meta) {
|
|
return isHorizontal ? meta.xAxisID === me.id : meta.yAxisID === me.id;
|
|
}
|
|
|
|
// First Calculate the range
|
|
me.min = null;
|
|
me.max = null;
|
|
|
|
var hasStacks = opts.stacked;
|
|
if (hasStacks === undefined) {
|
|
helpers$1.each(datasets, function(dataset, datasetIndex) {
|
|
if (hasStacks) {
|
|
return;
|
|
}
|
|
|
|
var meta = chart.getDatasetMeta(datasetIndex);
|
|
if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta) &&
|
|
meta.stack !== undefined) {
|
|
hasStacks = true;
|
|
}
|
|
});
|
|
}
|
|
|
|
if (opts.stacked || hasStacks) {
|
|
var valuesPerStack = {};
|
|
|
|
helpers$1.each(datasets, function(dataset, datasetIndex) {
|
|
var meta = chart.getDatasetMeta(datasetIndex);
|
|
var key = [
|
|
meta.type,
|
|
// we have a separate stack for stack=undefined datasets when the opts.stacked is undefined
|
|
((opts.stacked === undefined && meta.stack === undefined) ? datasetIndex : ''),
|
|
meta.stack
|
|
].join('.');
|
|
|
|
if (valuesPerStack[key] === undefined) {
|
|
valuesPerStack[key] = {
|
|
positiveValues: [],
|
|
negativeValues: []
|
|
};
|
|
}
|
|
|
|
// Store these per type
|
|
var positiveValues = valuesPerStack[key].positiveValues;
|
|
var negativeValues = valuesPerStack[key].negativeValues;
|
|
|
|
if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
|
|
helpers$1.each(dataset.data, function(rawValue, index) {
|
|
var value = +me.getRightValue(rawValue);
|
|
if (isNaN(value) || meta.data[index].hidden) {
|
|
return;
|
|
}
|
|
|
|
positiveValues[index] = positiveValues[index] || 0;
|
|
negativeValues[index] = negativeValues[index] || 0;
|
|
|
|
if (opts.relativePoints) {
|
|
positiveValues[index] = 100;
|
|
} else if (value < 0) {
|
|
negativeValues[index] += value;
|
|
} else {
|
|
positiveValues[index] += value;
|
|
}
|
|
});
|
|
}
|
|
});
|
|
|
|
helpers$1.each(valuesPerStack, function(valuesForType) {
|
|
var values = valuesForType.positiveValues.concat(valuesForType.negativeValues);
|
|
var minVal = helpers$1.min(values);
|
|
var maxVal = helpers$1.max(values);
|
|
me.min = me.min === null ? minVal : Math.min(me.min, minVal);
|
|
me.max = me.max === null ? maxVal : Math.max(me.max, maxVal);
|
|
});
|
|
|
|
} else {
|
|
helpers$1.each(datasets, function(dataset, datasetIndex) {
|
|
var meta = chart.getDatasetMeta(datasetIndex);
|
|
if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
|
|
helpers$1.each(dataset.data, function(rawValue, index) {
|
|
var value = +me.getRightValue(rawValue);
|
|
if (isNaN(value) || meta.data[index].hidden) {
|
|
return;
|
|
}
|
|
|
|
if (me.min === null) {
|
|
me.min = value;
|
|
} else if (value < me.min) {
|
|
me.min = value;
|
|
}
|
|
|
|
if (me.max === null) {
|
|
me.max = value;
|
|
} else if (value > me.max) {
|
|
me.max = value;
|
|
}
|
|
});
|
|
}
|
|
});
|
|
}
|
|
|
|
me.min = isFinite(me.min) && !isNaN(me.min) ? me.min : DEFAULT_MIN;
|
|
me.max = isFinite(me.max) && !isNaN(me.max) ? me.max : DEFAULT_MAX;
|
|
|
|
// Common base implementation to handle ticks.min, ticks.max, ticks.beginAtZero
|
|
this.handleTickRangeOptions();
|
|
},
|
|
|
|
// Returns the maximum number of ticks based on the scale dimension
|
|
_computeTickLimit: function() {
|
|
var me = this;
|
|
var tickFont;
|
|
|
|
if (me.isHorizontal()) {
|
|
return Math.ceil(me.width / 40);
|
|
}
|
|
tickFont = helpers$1.options._parseFont(me.options.ticks);
|
|
return Math.ceil(me.height / tickFont.lineHeight);
|
|
},
|
|
|
|
// Called after the ticks are built. We need
|
|
handleDirectionalChanges: function() {
|
|
if (!this.isHorizontal()) {
|
|
// We are in a vertical orientation. The top value is the highest. So reverse the array
|
|
this.ticks.reverse();
|
|
}
|
|
},
|
|
|
|
getLabelForIndex: function(index, datasetIndex) {
|
|
return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]);
|
|
},
|
|
|
|
// Utils
|
|
getPixelForValue: function(value) {
|
|
// This must be called after fit has been run so that
|
|
// this.left, this.top, this.right, and this.bottom have been defined
|
|
var me = this;
|
|
var start = me.start;
|
|
|
|
var rightValue = +me.getRightValue(value);
|
|
var pixel;
|
|
var range = me.end - start;
|
|
|
|
if (me.isHorizontal()) {
|
|
pixel = me.left + (me.width / range * (rightValue - start));
|
|
} else {
|
|
pixel = me.bottom - (me.height / range * (rightValue - start));
|
|
}
|
|
return pixel;
|
|
},
|
|
|
|
getValueForPixel: function(pixel) {
|
|
var me = this;
|
|
var isHorizontal = me.isHorizontal();
|
|
var innerDimension = isHorizontal ? me.width : me.height;
|
|
var offset = (isHorizontal ? pixel - me.left : me.bottom - pixel) / innerDimension;
|
|
return me.start + ((me.end - me.start) * offset);
|
|
},
|
|
|
|
getPixelForTick: function(index) {
|
|
return this.getPixelForValue(this.ticksAsNumbers[index]);
|
|
}
|
|
});
|
|
|
|
// INTERNAL: static default options, registered in src/index.js
|
|
var _defaults$1 = defaultConfig$1;
|
|
scale_linear._defaults = _defaults$1;
|
|
|
|
var valueOrDefault$a = helpers$1.valueOrDefault;
|
|
|
|
/**
|
|
* Generate a set of logarithmic ticks
|
|
* @param generationOptions the options used to generate the ticks
|
|
* @param dataRange the range of the data
|
|
* @returns {number[]} array of tick values
|
|
*/
|
|
function generateTicks$1(generationOptions, dataRange) {
|
|
var ticks = [];
|
|
|
|
var tickVal = valueOrDefault$a(generationOptions.min, Math.pow(10, Math.floor(helpers$1.log10(dataRange.min))));
|
|
|
|
var endExp = Math.floor(helpers$1.log10(dataRange.max));
|
|
var endSignificand = Math.ceil(dataRange.max / Math.pow(10, endExp));
|
|
var exp, significand;
|
|
|
|
if (tickVal === 0) {
|
|
exp = Math.floor(helpers$1.log10(dataRange.minNotZero));
|
|
significand = Math.floor(dataRange.minNotZero / Math.pow(10, exp));
|
|
|
|
ticks.push(tickVal);
|
|
tickVal = significand * Math.pow(10, exp);
|
|
} else {
|
|
exp = Math.floor(helpers$1.log10(tickVal));
|
|
significand = Math.floor(tickVal / Math.pow(10, exp));
|
|
}
|
|
var precision = exp < 0 ? Math.pow(10, Math.abs(exp)) : 1;
|
|
|
|
do {
|
|
ticks.push(tickVal);
|
|
|
|
++significand;
|
|
if (significand === 10) {
|
|
significand = 1;
|
|
++exp;
|
|
precision = exp >= 0 ? 1 : precision;
|
|
}
|
|
|
|
tickVal = Math.round(significand * Math.pow(10, exp) * precision) / precision;
|
|
} while (exp < endExp || (exp === endExp && significand < endSignificand));
|
|
|
|
var lastTick = valueOrDefault$a(generationOptions.max, tickVal);
|
|
ticks.push(lastTick);
|
|
|
|
return ticks;
|
|
}
|
|
|
|
var defaultConfig$2 = {
|
|
position: 'left',
|
|
|
|
// label settings
|
|
ticks: {
|
|
callback: core_ticks.formatters.logarithmic
|
|
}
|
|
};
|
|
|
|
// TODO(v3): change this to positiveOrDefault
|
|
function nonNegativeOrDefault(value, defaultValue) {
|
|
return helpers$1.isFinite(value) && value >= 0 ? value : defaultValue;
|
|
}
|
|
|
|
var scale_logarithmic = core_scale.extend({
|
|
determineDataLimits: function() {
|
|
var me = this;
|
|
var opts = me.options;
|
|
var chart = me.chart;
|
|
var data = chart.data;
|
|
var datasets = data.datasets;
|
|
var isHorizontal = me.isHorizontal();
|
|
function IDMatches(meta) {
|
|
return isHorizontal ? meta.xAxisID === me.id : meta.yAxisID === me.id;
|
|
}
|
|
|
|
// Calculate Range
|
|
me.min = null;
|
|
me.max = null;
|
|
me.minNotZero = null;
|
|
|
|
var hasStacks = opts.stacked;
|
|
if (hasStacks === undefined) {
|
|
helpers$1.each(datasets, function(dataset, datasetIndex) {
|
|
if (hasStacks) {
|
|
return;
|
|
}
|
|
|
|
var meta = chart.getDatasetMeta(datasetIndex);
|
|
if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta) &&
|
|
meta.stack !== undefined) {
|
|
hasStacks = true;
|
|
}
|
|
});
|
|
}
|
|
|
|
if (opts.stacked || hasStacks) {
|
|
var valuesPerStack = {};
|
|
|
|
helpers$1.each(datasets, function(dataset, datasetIndex) {
|
|
var meta = chart.getDatasetMeta(datasetIndex);
|
|
var key = [
|
|
meta.type,
|
|
// we have a separate stack for stack=undefined datasets when the opts.stacked is undefined
|
|
((opts.stacked === undefined && meta.stack === undefined) ? datasetIndex : ''),
|
|
meta.stack
|
|
].join('.');
|
|
|
|
if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
|
|
if (valuesPerStack[key] === undefined) {
|
|
valuesPerStack[key] = [];
|
|
}
|
|
|
|
helpers$1.each(dataset.data, function(rawValue, index) {
|
|
var values = valuesPerStack[key];
|
|
var value = +me.getRightValue(rawValue);
|
|
// invalid, hidden and negative values are ignored
|
|
if (isNaN(value) || meta.data[index].hidden || value < 0) {
|
|
return;
|
|
}
|
|
values[index] = values[index] || 0;
|
|
values[index] += value;
|
|
});
|
|
}
|
|
});
|
|
|
|
helpers$1.each(valuesPerStack, function(valuesForType) {
|
|
if (valuesForType.length > 0) {
|
|
var minVal = helpers$1.min(valuesForType);
|
|
var maxVal = helpers$1.max(valuesForType);
|
|
me.min = me.min === null ? minVal : Math.min(me.min, minVal);
|
|
me.max = me.max === null ? maxVal : Math.max(me.max, maxVal);
|
|
}
|
|
});
|
|
|
|
} else {
|
|
helpers$1.each(datasets, function(dataset, datasetIndex) {
|
|
var meta = chart.getDatasetMeta(datasetIndex);
|
|
if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
|
|
helpers$1.each(dataset.data, function(rawValue, index) {
|
|
var value = +me.getRightValue(rawValue);
|
|
// invalid, hidden and negative values are ignored
|
|
if (isNaN(value) || meta.data[index].hidden || value < 0) {
|
|
return;
|
|
}
|
|
|
|
if (me.min === null) {
|
|
me.min = value;
|
|
} else if (value < me.min) {
|
|
me.min = value;
|
|
}
|
|
|
|
if (me.max === null) {
|
|
me.max = value;
|
|
} else if (value > me.max) {
|
|
me.max = value;
|
|
}
|
|
|
|
if (value !== 0 && (me.minNotZero === null || value < me.minNotZero)) {
|
|
me.minNotZero = value;
|
|
}
|
|
});
|
|
}
|
|
});
|
|
}
|
|
|
|
// Common base implementation to handle ticks.min, ticks.max
|
|
this.handleTickRangeOptions();
|
|
},
|
|
|
|
handleTickRangeOptions: function() {
|
|
var me = this;
|
|
var tickOpts = me.options.ticks;
|
|
var DEFAULT_MIN = 1;
|
|
var DEFAULT_MAX = 10;
|
|
|
|
me.min = nonNegativeOrDefault(tickOpts.min, me.min);
|
|
me.max = nonNegativeOrDefault(tickOpts.max, me.max);
|
|
|
|
if (me.min === me.max) {
|
|
if (me.min !== 0 && me.min !== null) {
|
|
me.min = Math.pow(10, Math.floor(helpers$1.log10(me.min)) - 1);
|
|
me.max = Math.pow(10, Math.floor(helpers$1.log10(me.max)) + 1);
|
|
} else {
|
|
me.min = DEFAULT_MIN;
|
|
me.max = DEFAULT_MAX;
|
|
}
|
|
}
|
|
if (me.min === null) {
|
|
me.min = Math.pow(10, Math.floor(helpers$1.log10(me.max)) - 1);
|
|
}
|
|
if (me.max === null) {
|
|
me.max = me.min !== 0
|
|
? Math.pow(10, Math.floor(helpers$1.log10(me.min)) + 1)
|
|
: DEFAULT_MAX;
|
|
}
|
|
if (me.minNotZero === null) {
|
|
if (me.min > 0) {
|
|
me.minNotZero = me.min;
|
|
} else if (me.max < 1) {
|
|
me.minNotZero = Math.pow(10, Math.floor(helpers$1.log10(me.max)));
|
|
} else {
|
|
me.minNotZero = DEFAULT_MIN;
|
|
}
|
|
}
|
|
},
|
|
|
|
buildTicks: function() {
|
|
var me = this;
|
|
var tickOpts = me.options.ticks;
|
|
var reverse = !me.isHorizontal();
|
|
|
|
var generationOptions = {
|
|
min: nonNegativeOrDefault(tickOpts.min),
|
|
max: nonNegativeOrDefault(tickOpts.max)
|
|
};
|
|
var ticks = me.ticks = generateTicks$1(generationOptions, me);
|
|
|
|
// At this point, we need to update our max and min given the tick values since we have expanded the
|
|
// range of the scale
|
|
me.max = helpers$1.max(ticks);
|
|
me.min = helpers$1.min(ticks);
|
|
|
|
if (tickOpts.reverse) {
|
|
reverse = !reverse;
|
|
me.start = me.max;
|
|
me.end = me.min;
|
|
} else {
|
|
me.start = me.min;
|
|
me.end = me.max;
|
|
}
|
|
if (reverse) {
|
|
ticks.reverse();
|
|
}
|
|
},
|
|
|
|
convertTicksToLabels: function() {
|
|
this.tickValues = this.ticks.slice();
|
|
|
|
core_scale.prototype.convertTicksToLabels.call(this);
|
|
},
|
|
|
|
// Get the correct tooltip label
|
|
getLabelForIndex: function(index, datasetIndex) {
|
|
return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]);
|
|
},
|
|
|
|
getPixelForTick: function(index) {
|
|
return this.getPixelForValue(this.tickValues[index]);
|
|
},
|
|
|
|
/**
|
|
* Returns the value of the first tick.
|
|
* @param {number} value - The minimum not zero value.
|
|
* @return {number} The first tick value.
|
|
* @private
|
|
*/
|
|
_getFirstTickValue: function(value) {
|
|
var exp = Math.floor(helpers$1.log10(value));
|
|
var significand = Math.floor(value / Math.pow(10, exp));
|
|
|
|
return significand * Math.pow(10, exp);
|
|
},
|
|
|
|
getPixelForValue: function(value) {
|
|
var me = this;
|
|
var tickOpts = me.options.ticks;
|
|
var reverse = tickOpts.reverse;
|
|
var log10 = helpers$1.log10;
|
|
var firstTickValue = me._getFirstTickValue(me.minNotZero);
|
|
var offset = 0;
|
|
var innerDimension, pixel, start, end, sign;
|
|
|
|
value = +me.getRightValue(value);
|
|
if (reverse) {
|
|
start = me.end;
|
|
end = me.start;
|
|
sign = -1;
|
|
} else {
|
|
start = me.start;
|
|
end = me.end;
|
|
sign = 1;
|
|
}
|
|
if (me.isHorizontal()) {
|
|
innerDimension = me.width;
|
|
pixel = reverse ? me.right : me.left;
|
|
} else {
|
|
innerDimension = me.height;
|
|
sign *= -1; // invert, since the upper-left corner of the canvas is at pixel (0, 0)
|
|
pixel = reverse ? me.top : me.bottom;
|
|
}
|
|
if (value !== start) {
|
|
if (start === 0) { // include zero tick
|
|
offset = valueOrDefault$a(tickOpts.fontSize, core_defaults.global.defaultFontSize);
|
|
innerDimension -= offset;
|
|
start = firstTickValue;
|
|
}
|
|
if (value !== 0) {
|
|
offset += innerDimension / (log10(end) - log10(start)) * (log10(value) - log10(start));
|
|
}
|
|
pixel += sign * offset;
|
|
}
|
|
return pixel;
|
|
},
|
|
|
|
getValueForPixel: function(pixel) {
|
|
var me = this;
|
|
var tickOpts = me.options.ticks;
|
|
var reverse = tickOpts.reverse;
|
|
var log10 = helpers$1.log10;
|
|
var firstTickValue = me._getFirstTickValue(me.minNotZero);
|
|
var innerDimension, start, end, value;
|
|
|
|
if (reverse) {
|
|
start = me.end;
|
|
end = me.start;
|
|
} else {
|
|
start = me.start;
|
|
end = me.end;
|
|
}
|
|
if (me.isHorizontal()) {
|
|
innerDimension = me.width;
|
|
value = reverse ? me.right - pixel : pixel - me.left;
|
|
} else {
|
|
innerDimension = me.height;
|
|
value = reverse ? pixel - me.top : me.bottom - pixel;
|
|
}
|
|
if (value !== start) {
|
|
if (start === 0) { // include zero tick
|
|
var offset = valueOrDefault$a(tickOpts.fontSize, core_defaults.global.defaultFontSize);
|
|
value -= offset;
|
|
innerDimension -= offset;
|
|
start = firstTickValue;
|
|
}
|
|
value *= log10(end) - log10(start);
|
|
value /= innerDimension;
|
|
value = Math.pow(10, log10(start) + value);
|
|
}
|
|
return value;
|
|
}
|
|
});
|
|
|
|
// INTERNAL: static default options, registered in src/index.js
|
|
var _defaults$2 = defaultConfig$2;
|
|
scale_logarithmic._defaults = _defaults$2;
|
|
|
|
var valueOrDefault$b = helpers$1.valueOrDefault;
|
|
var valueAtIndexOrDefault$1 = helpers$1.valueAtIndexOrDefault;
|
|
var resolve$7 = helpers$1.options.resolve;
|
|
|
|
var defaultConfig$3 = {
|
|
display: true,
|
|
|
|
// Boolean - Whether to animate scaling the chart from the centre
|
|
animate: true,
|
|
position: 'chartArea',
|
|
|
|
angleLines: {
|
|
display: true,
|
|
color: 'rgba(0, 0, 0, 0.1)',
|
|
lineWidth: 1,
|
|
borderDash: [],
|
|
borderDashOffset: 0.0
|
|
},
|
|
|
|
gridLines: {
|
|
circular: false
|
|
},
|
|
|
|
// label settings
|
|
ticks: {
|
|
// Boolean - Show a backdrop to the scale label
|
|
showLabelBackdrop: true,
|
|
|
|
// String - The colour of the label backdrop
|
|
backdropColor: 'rgba(255,255,255,0.75)',
|
|
|
|
// Number - The backdrop padding above & below the label in pixels
|
|
backdropPaddingY: 2,
|
|
|
|
// Number - The backdrop padding to the side of the label in pixels
|
|
backdropPaddingX: 2,
|
|
|
|
callback: core_ticks.formatters.linear
|
|
},
|
|
|
|
pointLabels: {
|
|
// Boolean - if true, show point labels
|
|
display: true,
|
|
|
|
// Number - Point label font size in pixels
|
|
fontSize: 10,
|
|
|
|
// Function - Used to convert point labels
|
|
callback: function(label) {
|
|
return label;
|
|
}
|
|
}
|
|
};
|
|
|
|
function getValueCount(scale) {
|
|
var opts = scale.options;
|
|
return opts.angleLines.display || opts.pointLabels.display ? scale.chart.data.labels.length : 0;
|
|
}
|
|
|
|
function getTickBackdropHeight(opts) {
|
|
var tickOpts = opts.ticks;
|
|
|
|
if (tickOpts.display && opts.display) {
|
|
return valueOrDefault$b(tickOpts.fontSize, core_defaults.global.defaultFontSize) + tickOpts.backdropPaddingY * 2;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
function measureLabelSize(ctx, lineHeight, label) {
|
|
if (helpers$1.isArray(label)) {
|
|
return {
|
|
w: helpers$1.longestText(ctx, ctx.font, label),
|
|
h: label.length * lineHeight
|
|
};
|
|
}
|
|
|
|
return {
|
|
w: ctx.measureText(label).width,
|
|
h: lineHeight
|
|
};
|
|
}
|
|
|
|
function determineLimits(angle, pos, size, min, max) {
|
|
if (angle === min || angle === max) {
|
|
return {
|
|
start: pos - (size / 2),
|
|
end: pos + (size / 2)
|
|
};
|
|
} else if (angle < min || angle > max) {
|
|
return {
|
|
start: pos - size,
|
|
end: pos
|
|
};
|
|
}
|
|
|
|
return {
|
|
start: pos,
|
|
end: pos + size
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Helper function to fit a radial linear scale with point labels
|
|
*/
|
|
function fitWithPointLabels(scale) {
|
|
|
|
// Right, this is really confusing and there is a lot of maths going on here
|
|
// The gist of the problem is here: https://gist.github.com/nnnick/696cc9c55f4b0beb8fe9
|
|
//
|
|
// Reaction: https://dl.dropboxusercontent.com/u/34601363/toomuchscience.gif
|
|
//
|
|
// Solution:
|
|
//
|
|
// We assume the radius of the polygon is half the size of the canvas at first
|
|
// at each index we check if the text overlaps.
|
|
//
|
|
// Where it does, we store that angle and that index.
|
|
//
|
|
// After finding the largest index and angle we calculate how much we need to remove
|
|
// from the shape radius to move the point inwards by that x.
|
|
//
|
|
// We average the left and right distances to get the maximum shape radius that can fit in the box
|
|
// along with labels.
|
|
//
|
|
// Once we have that, we can find the centre point for the chart, by taking the x text protrusion
|
|
// on each side, removing that from the size, halving it and adding the left x protrusion width.
|
|
//
|
|
// This will mean we have a shape fitted to the canvas, as large as it can be with the labels
|
|
// and position it in the most space efficient manner
|
|
//
|
|
// https://dl.dropboxusercontent.com/u/34601363/yeahscience.gif
|
|
|
|
var plFont = helpers$1.options._parseFont(scale.options.pointLabels);
|
|
|
|
// Get maximum radius of the polygon. Either half the height (minus the text width) or half the width.
|
|
// Use this to calculate the offset + change. - Make sure L/R protrusion is at least 0 to stop issues with centre points
|
|
var furthestLimits = {
|
|
l: 0,
|
|
r: scale.width,
|
|
t: 0,
|
|
b: scale.height - scale.paddingTop
|
|
};
|
|
var furthestAngles = {};
|
|
var i, textSize, pointPosition;
|
|
|
|
scale.ctx.font = plFont.string;
|
|
scale._pointLabelSizes = [];
|
|
|
|
var valueCount = getValueCount(scale);
|
|
for (i = 0; i < valueCount; i++) {
|
|
pointPosition = scale.getPointPosition(i, scale.drawingArea + 5);
|
|
textSize = measureLabelSize(scale.ctx, plFont.lineHeight, scale.pointLabels[i] || '');
|
|
scale._pointLabelSizes[i] = textSize;
|
|
|
|
// Add quarter circle to make degree 0 mean top of circle
|
|
var angleRadians = scale.getIndexAngle(i);
|
|
var angle = helpers$1.toDegrees(angleRadians) % 360;
|
|
var hLimits = determineLimits(angle, pointPosition.x, textSize.w, 0, 180);
|
|
var vLimits = determineLimits(angle, pointPosition.y, textSize.h, 90, 270);
|
|
|
|
if (hLimits.start < furthestLimits.l) {
|
|
furthestLimits.l = hLimits.start;
|
|
furthestAngles.l = angleRadians;
|
|
}
|
|
|
|
if (hLimits.end > furthestLimits.r) {
|
|
furthestLimits.r = hLimits.end;
|
|
furthestAngles.r = angleRadians;
|
|
}
|
|
|
|
if (vLimits.start < furthestLimits.t) {
|
|
furthestLimits.t = vLimits.start;
|
|
furthestAngles.t = angleRadians;
|
|
}
|
|
|
|
if (vLimits.end > furthestLimits.b) {
|
|
furthestLimits.b = vLimits.end;
|
|
furthestAngles.b = angleRadians;
|
|
}
|
|
}
|
|
|
|
scale.setReductions(scale.drawingArea, furthestLimits, furthestAngles);
|
|
}
|
|
|
|
function getTextAlignForAngle(angle) {
|
|
if (angle === 0 || angle === 180) {
|
|
return 'center';
|
|
} else if (angle < 180) {
|
|
return 'left';
|
|
}
|
|
|
|
return 'right';
|
|
}
|
|
|
|
function fillText(ctx, text, position, lineHeight) {
|
|
var y = position.y + lineHeight / 2;
|
|
var i, ilen;
|
|
|
|
if (helpers$1.isArray(text)) {
|
|
for (i = 0, ilen = text.length; i < ilen; ++i) {
|
|
ctx.fillText(text[i], position.x, y);
|
|
y += lineHeight;
|
|
}
|
|
} else {
|
|
ctx.fillText(text, position.x, y);
|
|
}
|
|
}
|
|
|
|
function adjustPointPositionForLabelHeight(angle, textSize, position) {
|
|
if (angle === 90 || angle === 270) {
|
|
position.y -= (textSize.h / 2);
|
|
} else if (angle > 270 || angle < 90) {
|
|
position.y -= textSize.h;
|
|
}
|
|
}
|
|
|
|
function drawPointLabels(scale) {
|
|
var ctx = scale.ctx;
|
|
var opts = scale.options;
|
|
var angleLineOpts = opts.angleLines;
|
|
var gridLineOpts = opts.gridLines;
|
|
var pointLabelOpts = opts.pointLabels;
|
|
var lineWidth = valueOrDefault$b(angleLineOpts.lineWidth, gridLineOpts.lineWidth);
|
|
var lineColor = valueOrDefault$b(angleLineOpts.color, gridLineOpts.color);
|
|
var tickBackdropHeight = getTickBackdropHeight(opts);
|
|
|
|
ctx.save();
|
|
ctx.lineWidth = lineWidth;
|
|
ctx.strokeStyle = lineColor;
|
|
if (ctx.setLineDash) {
|
|
ctx.setLineDash(resolve$7([angleLineOpts.borderDash, gridLineOpts.borderDash, []]));
|
|
ctx.lineDashOffset = resolve$7([angleLineOpts.borderDashOffset, gridLineOpts.borderDashOffset, 0.0]);
|
|
}
|
|
|
|
var outerDistance = scale.getDistanceFromCenterForValue(opts.ticks.reverse ? scale.min : scale.max);
|
|
|
|
// Point Label Font
|
|
var plFont = helpers$1.options._parseFont(pointLabelOpts);
|
|
|
|
ctx.font = plFont.string;
|
|
ctx.textBaseline = 'middle';
|
|
|
|
for (var i = getValueCount(scale) - 1; i >= 0; i--) {
|
|
if (angleLineOpts.display && lineWidth && lineColor) {
|
|
var outerPosition = scale.getPointPosition(i, outerDistance);
|
|
ctx.beginPath();
|
|
ctx.moveTo(scale.xCenter, scale.yCenter);
|
|
ctx.lineTo(outerPosition.x, outerPosition.y);
|
|
ctx.stroke();
|
|
}
|
|
|
|
if (pointLabelOpts.display) {
|
|
// Extra pixels out for some label spacing
|
|
var extra = (i === 0 ? tickBackdropHeight / 2 : 0);
|
|
var pointLabelPosition = scale.getPointPosition(i, outerDistance + extra + 5);
|
|
|
|
// Keep this in loop since we may support array properties here
|
|
var pointLabelFontColor = valueAtIndexOrDefault$1(pointLabelOpts.fontColor, i, core_defaults.global.defaultFontColor);
|
|
ctx.fillStyle = pointLabelFontColor;
|
|
|
|
var angleRadians = scale.getIndexAngle(i);
|
|
var angle = helpers$1.toDegrees(angleRadians);
|
|
ctx.textAlign = getTextAlignForAngle(angle);
|
|
adjustPointPositionForLabelHeight(angle, scale._pointLabelSizes[i], pointLabelPosition);
|
|
fillText(ctx, scale.pointLabels[i] || '', pointLabelPosition, plFont.lineHeight);
|
|
}
|
|
}
|
|
ctx.restore();
|
|
}
|
|
|
|
function drawRadiusLine(scale, gridLineOpts, radius, index) {
|
|
var ctx = scale.ctx;
|
|
var circular = gridLineOpts.circular;
|
|
var valueCount = getValueCount(scale);
|
|
var lineColor = valueAtIndexOrDefault$1(gridLineOpts.color, index - 1);
|
|
var lineWidth = valueAtIndexOrDefault$1(gridLineOpts.lineWidth, index - 1);
|
|
var pointPosition;
|
|
|
|
if ((!circular && !valueCount) || !lineColor || !lineWidth) {
|
|
return;
|
|
}
|
|
|
|
ctx.save();
|
|
ctx.strokeStyle = lineColor;
|
|
ctx.lineWidth = lineWidth;
|
|
if (ctx.setLineDash) {
|
|
ctx.setLineDash(gridLineOpts.borderDash || []);
|
|
ctx.lineDashOffset = gridLineOpts.borderDashOffset || 0.0;
|
|
}
|
|
|
|
ctx.beginPath();
|
|
if (circular) {
|
|
// Draw circular arcs between the points
|
|
ctx.arc(scale.xCenter, scale.yCenter, radius, 0, Math.PI * 2);
|
|
} else {
|
|
// Draw straight lines connecting each index
|
|
pointPosition = scale.getPointPosition(0, radius);
|
|
ctx.moveTo(pointPosition.x, pointPosition.y);
|
|
|
|
for (var i = 1; i < valueCount; i++) {
|
|
pointPosition = scale.getPointPosition(i, radius);
|
|
ctx.lineTo(pointPosition.x, pointPosition.y);
|
|
}
|
|
}
|
|
ctx.closePath();
|
|
ctx.stroke();
|
|
ctx.restore();
|
|
}
|
|
|
|
function numberOrZero(param) {
|
|
return helpers$1.isNumber(param) ? param : 0;
|
|
}
|
|
|
|
var scale_radialLinear = scale_linearbase.extend({
|
|
setDimensions: function() {
|
|
var me = this;
|
|
|
|
// Set the unconstrained dimension before label rotation
|
|
me.width = me.maxWidth;
|
|
me.height = me.maxHeight;
|
|
me.paddingTop = getTickBackdropHeight(me.options) / 2;
|
|
me.xCenter = Math.floor(me.width / 2);
|
|
me.yCenter = Math.floor((me.height - me.paddingTop) / 2);
|
|
me.drawingArea = Math.min(me.height - me.paddingTop, me.width) / 2;
|
|
},
|
|
|
|
determineDataLimits: function() {
|
|
var me = this;
|
|
var chart = me.chart;
|
|
var min = Number.POSITIVE_INFINITY;
|
|
var max = Number.NEGATIVE_INFINITY;
|
|
|
|
helpers$1.each(chart.data.datasets, function(dataset, datasetIndex) {
|
|
if (chart.isDatasetVisible(datasetIndex)) {
|
|
var meta = chart.getDatasetMeta(datasetIndex);
|
|
|
|
helpers$1.each(dataset.data, function(rawValue, index) {
|
|
var value = +me.getRightValue(rawValue);
|
|
if (isNaN(value) || meta.data[index].hidden) {
|
|
return;
|
|
}
|
|
|
|
min = Math.min(value, min);
|
|
max = Math.max(value, max);
|
|
});
|
|
}
|
|
});
|
|
|
|
me.min = (min === Number.POSITIVE_INFINITY ? 0 : min);
|
|
me.max = (max === Number.NEGATIVE_INFINITY ? 0 : max);
|
|
|
|
// Common base implementation to handle ticks.min, ticks.max, ticks.beginAtZero
|
|
me.handleTickRangeOptions();
|
|
},
|
|
|
|
// Returns the maximum number of ticks based on the scale dimension
|
|
_computeTickLimit: function() {
|
|
return Math.ceil(this.drawingArea / getTickBackdropHeight(this.options));
|
|
},
|
|
|
|
convertTicksToLabels: function() {
|
|
var me = this;
|
|
|
|
scale_linearbase.prototype.convertTicksToLabels.call(me);
|
|
|
|
// Point labels
|
|
me.pointLabels = me.chart.data.labels.map(me.options.pointLabels.callback, me);
|
|
},
|
|
|
|
getLabelForIndex: function(index, datasetIndex) {
|
|
return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]);
|
|
},
|
|
|
|
fit: function() {
|
|
var me = this;
|
|
var opts = me.options;
|
|
|
|
if (opts.display && opts.pointLabels.display) {
|
|
fitWithPointLabels(me);
|
|
} else {
|
|
me.setCenterPoint(0, 0, 0, 0);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Set radius reductions and determine new radius and center point
|
|
* @private
|
|
*/
|
|
setReductions: function(largestPossibleRadius, furthestLimits, furthestAngles) {
|
|
var me = this;
|
|
var radiusReductionLeft = furthestLimits.l / Math.sin(furthestAngles.l);
|
|
var radiusReductionRight = Math.max(furthestLimits.r - me.width, 0) / Math.sin(furthestAngles.r);
|
|
var radiusReductionTop = -furthestLimits.t / Math.cos(furthestAngles.t);
|
|
var radiusReductionBottom = -Math.max(furthestLimits.b - (me.height - me.paddingTop), 0) / Math.cos(furthestAngles.b);
|
|
|
|
radiusReductionLeft = numberOrZero(radiusReductionLeft);
|
|
radiusReductionRight = numberOrZero(radiusReductionRight);
|
|
radiusReductionTop = numberOrZero(radiusReductionTop);
|
|
radiusReductionBottom = numberOrZero(radiusReductionBottom);
|
|
|
|
me.drawingArea = Math.min(
|
|
Math.floor(largestPossibleRadius - (radiusReductionLeft + radiusReductionRight) / 2),
|
|
Math.floor(largestPossibleRadius - (radiusReductionTop + radiusReductionBottom) / 2));
|
|
me.setCenterPoint(radiusReductionLeft, radiusReductionRight, radiusReductionTop, radiusReductionBottom);
|
|
},
|
|
|
|
setCenterPoint: function(leftMovement, rightMovement, topMovement, bottomMovement) {
|
|
var me = this;
|
|
var maxRight = me.width - rightMovement - me.drawingArea;
|
|
var maxLeft = leftMovement + me.drawingArea;
|
|
var maxTop = topMovement + me.drawingArea;
|
|
var maxBottom = (me.height - me.paddingTop) - bottomMovement - me.drawingArea;
|
|
|
|
me.xCenter = Math.floor(((maxLeft + maxRight) / 2) + me.left);
|
|
me.yCenter = Math.floor(((maxTop + maxBottom) / 2) + me.top + me.paddingTop);
|
|
},
|
|
|
|
getIndexAngle: function(index) {
|
|
var angleMultiplier = (Math.PI * 2) / getValueCount(this);
|
|
var startAngle = this.chart.options && this.chart.options.startAngle ?
|
|
this.chart.options.startAngle :
|
|
0;
|
|
|
|
var startAngleRadians = startAngle * Math.PI * 2 / 360;
|
|
|
|
// Start from the top instead of right, so remove a quarter of the circle
|
|
return index * angleMultiplier + startAngleRadians;
|
|
},
|
|
|
|
getDistanceFromCenterForValue: function(value) {
|
|
var me = this;
|
|
|
|
if (value === null) {
|
|
return 0; // null always in center
|
|
}
|
|
|
|
// Take into account half font size + the yPadding of the top value
|
|
var scalingFactor = me.drawingArea / (me.max - me.min);
|
|
if (me.options.ticks.reverse) {
|
|
return (me.max - value) * scalingFactor;
|
|
}
|
|
return (value - me.min) * scalingFactor;
|
|
},
|
|
|
|
getPointPosition: function(index, distanceFromCenter) {
|
|
var me = this;
|
|
var thisAngle = me.getIndexAngle(index) - (Math.PI / 2);
|
|
return {
|
|
x: Math.cos(thisAngle) * distanceFromCenter + me.xCenter,
|
|
y: Math.sin(thisAngle) * distanceFromCenter + me.yCenter
|
|
};
|
|
},
|
|
|
|
getPointPositionForValue: function(index, value) {
|
|
return this.getPointPosition(index, this.getDistanceFromCenterForValue(value));
|
|
},
|
|
|
|
getBasePosition: function() {
|
|
var me = this;
|
|
var min = me.min;
|
|
var max = me.max;
|
|
|
|
return me.getPointPositionForValue(0,
|
|
me.beginAtZero ? 0 :
|
|
min < 0 && max < 0 ? max :
|
|
min > 0 && max > 0 ? min :
|
|
0);
|
|
},
|
|
|
|
draw: function() {
|
|
var me = this;
|
|
var opts = me.options;
|
|
var gridLineOpts = opts.gridLines;
|
|
var tickOpts = opts.ticks;
|
|
|
|
if (opts.display) {
|
|
var ctx = me.ctx;
|
|
var startAngle = this.getIndexAngle(0);
|
|
var tickFont = helpers$1.options._parseFont(tickOpts);
|
|
|
|
if (opts.angleLines.display || opts.pointLabels.display) {
|
|
drawPointLabels(me);
|
|
}
|
|
|
|
helpers$1.each(me.ticks, function(label, index) {
|
|
// Don't draw a centre value (if it is minimum)
|
|
if (index > 0 || tickOpts.reverse) {
|
|
var yCenterOffset = me.getDistanceFromCenterForValue(me.ticksAsNumbers[index]);
|
|
|
|
// Draw circular lines around the scale
|
|
if (gridLineOpts.display && index !== 0) {
|
|
drawRadiusLine(me, gridLineOpts, yCenterOffset, index);
|
|
}
|
|
|
|
if (tickOpts.display) {
|
|
var tickFontColor = valueOrDefault$b(tickOpts.fontColor, core_defaults.global.defaultFontColor);
|
|
ctx.font = tickFont.string;
|
|
|
|
ctx.save();
|
|
ctx.translate(me.xCenter, me.yCenter);
|
|
ctx.rotate(startAngle);
|
|
|
|
if (tickOpts.showLabelBackdrop) {
|
|
var labelWidth = ctx.measureText(label).width;
|
|
ctx.fillStyle = tickOpts.backdropColor;
|
|
ctx.fillRect(
|
|
-labelWidth / 2 - tickOpts.backdropPaddingX,
|
|
-yCenterOffset - tickFont.size / 2 - tickOpts.backdropPaddingY,
|
|
labelWidth + tickOpts.backdropPaddingX * 2,
|
|
tickFont.size + tickOpts.backdropPaddingY * 2
|
|
);
|
|
}
|
|
|
|
ctx.textAlign = 'center';
|
|
ctx.textBaseline = 'middle';
|
|
ctx.fillStyle = tickFontColor;
|
|
ctx.fillText(label, 0, -yCenterOffset);
|
|
ctx.restore();
|
|
}
|
|
}
|
|
});
|
|
}
|
|
}
|
|
});
|
|
|
|
// INTERNAL: static default options, registered in src/index.js
|
|
var _defaults$3 = defaultConfig$3;
|
|
scale_radialLinear._defaults = _defaults$3;
|
|
|
|
var valueOrDefault$c = helpers$1.valueOrDefault;
|
|
|
|
// Integer constants are from the ES6 spec.
|
|
var MIN_INTEGER = Number.MIN_SAFE_INTEGER || -9007199254740991;
|
|
var MAX_INTEGER = Number.MAX_SAFE_INTEGER || 9007199254740991;
|
|
|
|
var INTERVALS = {
|
|
millisecond: {
|
|
common: true,
|
|
size: 1,
|
|
steps: [1, 2, 5, 10, 20, 50, 100, 250, 500]
|
|
},
|
|
second: {
|
|
common: true,
|
|
size: 1000,
|
|
steps: [1, 2, 5, 10, 15, 30]
|
|
},
|
|
minute: {
|
|
common: true,
|
|
size: 60000,
|
|
steps: [1, 2, 5, 10, 15, 30]
|
|
},
|
|
hour: {
|
|
common: true,
|
|
size: 3600000,
|
|
steps: [1, 2, 3, 6, 12]
|
|
},
|
|
day: {
|
|
common: true,
|
|
size: 86400000,
|
|
steps: [1, 2, 5]
|
|
},
|
|
week: {
|
|
common: false,
|
|
size: 604800000,
|
|
steps: [1, 2, 3, 4]
|
|
},
|
|
month: {
|
|
common: true,
|
|
size: 2.628e9,
|
|
steps: [1, 2, 3]
|
|
},
|
|
quarter: {
|
|
common: false,
|
|
size: 7.884e9,
|
|
steps: [1, 2, 3, 4]
|
|
},
|
|
year: {
|
|
common: true,
|
|
size: 3.154e10
|
|
}
|
|
};
|
|
|
|
var UNITS = Object.keys(INTERVALS);
|
|
|
|
function sorter(a, b) {
|
|
return a - b;
|
|
}
|
|
|
|
function arrayUnique(items) {
|
|
var hash = {};
|
|
var out = [];
|
|
var i, ilen, item;
|
|
|
|
for (i = 0, ilen = items.length; i < ilen; ++i) {
|
|
item = items[i];
|
|
if (!hash[item]) {
|
|
hash[item] = true;
|
|
out.push(item);
|
|
}
|
|
}
|
|
|
|
return out;
|
|
}
|
|
|
|
/**
|
|
* Returns an array of {time, pos} objects used to interpolate a specific `time` or position
|
|
* (`pos`) on the scale, by searching entries before and after the requested value. `pos` is
|
|
* a decimal between 0 and 1: 0 being the start of the scale (left or top) and 1 the other
|
|
* extremity (left + width or top + height). Note that it would be more optimized to directly
|
|
* store pre-computed pixels, but the scale dimensions are not guaranteed at the time we need
|
|
* to create the lookup table. The table ALWAYS contains at least two items: min and max.
|
|
*
|
|
* @param {number[]} timestamps - timestamps sorted from lowest to highest.
|
|
* @param {string} distribution - If 'linear', timestamps will be spread linearly along the min
|
|
* and max range, so basically, the table will contains only two items: {min, 0} and {max, 1}.
|
|
* If 'series', timestamps will be positioned at the same distance from each other. In this
|
|
* case, only timestamps that break the time linearity are registered, meaning that in the
|
|
* best case, all timestamps are linear, the table contains only min and max.
|
|
*/
|
|
function buildLookupTable(timestamps, min, max, distribution) {
|
|
if (distribution === 'linear' || !timestamps.length) {
|
|
return [
|
|
{time: min, pos: 0},
|
|
{time: max, pos: 1}
|
|
];
|
|
}
|
|
|
|
var table = [];
|
|
var items = [min];
|
|
var i, ilen, prev, curr, next;
|
|
|
|
for (i = 0, ilen = timestamps.length; i < ilen; ++i) {
|
|
curr = timestamps[i];
|
|
if (curr > min && curr < max) {
|
|
items.push(curr);
|
|
}
|
|
}
|
|
|
|
items.push(max);
|
|
|
|
for (i = 0, ilen = items.length; i < ilen; ++i) {
|
|
next = items[i + 1];
|
|
prev = items[i - 1];
|
|
curr = items[i];
|
|
|
|
// only add points that breaks the scale linearity
|
|
if (prev === undefined || next === undefined || Math.round((next + prev) / 2) !== curr) {
|
|
table.push({time: curr, pos: i / (ilen - 1)});
|
|
}
|
|
}
|
|
|
|
return table;
|
|
}
|
|
|
|
// @see adapted from https://www.anujgakhar.com/2014/03/01/binary-search-in-javascript/
|
|
function lookup(table, key, value) {
|
|
var lo = 0;
|
|
var hi = table.length - 1;
|
|
var mid, i0, i1;
|
|
|
|
while (lo >= 0 && lo <= hi) {
|
|
mid = (lo + hi) >> 1;
|
|
i0 = table[mid - 1] || null;
|
|
i1 = table[mid];
|
|
|
|
if (!i0) {
|
|
// given value is outside table (before first item)
|
|
return {lo: null, hi: i1};
|
|
} else if (i1[key] < value) {
|
|
lo = mid + 1;
|
|
} else if (i0[key] > value) {
|
|
hi = mid - 1;
|
|
} else {
|
|
return {lo: i0, hi: i1};
|
|
}
|
|
}
|
|
|
|
// given value is outside table (after last item)
|
|
return {lo: i1, hi: null};
|
|
}
|
|
|
|
/**
|
|
* Linearly interpolates the given source `value` using the table items `skey` values and
|
|
* returns the associated `tkey` value. For example, interpolate(table, 'time', 42, 'pos')
|
|
* returns the position for a timestamp equal to 42. If value is out of bounds, values at
|
|
* index [0, 1] or [n - 1, n] are used for the interpolation.
|
|
*/
|
|
function interpolate$1(table, skey, sval, tkey) {
|
|
var range = lookup(table, skey, sval);
|
|
|
|
// Note: the lookup table ALWAYS contains at least 2 items (min and max)
|
|
var prev = !range.lo ? table[0] : !range.hi ? table[table.length - 2] : range.lo;
|
|
var next = !range.lo ? table[1] : !range.hi ? table[table.length - 1] : range.hi;
|
|
|
|
var span = next[skey] - prev[skey];
|
|
var ratio = span ? (sval - prev[skey]) / span : 0;
|
|
var offset = (next[tkey] - prev[tkey]) * ratio;
|
|
|
|
return prev[tkey] + offset;
|
|
}
|
|
|
|
function toTimestamp(scale, input) {
|
|
var adapter = scale._adapter;
|
|
var options = scale.options.time;
|
|
var parser = options.parser;
|
|
var format = parser || options.format;
|
|
var value = input;
|
|
|
|
if (typeof parser === 'function') {
|
|
value = parser(value);
|
|
}
|
|
|
|
// Only parse if its not a timestamp already
|
|
if (!helpers$1.isFinite(value)) {
|
|
value = typeof format === 'string'
|
|
? adapter.parse(value, format)
|
|
: adapter.parse(value);
|
|
}
|
|
|
|
if (value !== null) {
|
|
return +value;
|
|
}
|
|
|
|
// Labels are in an incompatible format and no `parser` has been provided.
|
|
// The user might still use the deprecated `format` option for parsing.
|
|
if (!parser && typeof format === 'function') {
|
|
value = format(input);
|
|
|
|
// `format` could return something else than a timestamp, if so, parse it
|
|
if (!helpers$1.isFinite(value)) {
|
|
value = adapter.parse(value);
|
|
}
|
|
}
|
|
|
|
return value;
|
|
}
|
|
|
|
function parse(scale, input) {
|
|
if (helpers$1.isNullOrUndef(input)) {
|
|
return null;
|
|
}
|
|
|
|
var options = scale.options.time;
|
|
var value = toTimestamp(scale, scale.getRightValue(input));
|
|
if (value === null) {
|
|
return value;
|
|
}
|
|
|
|
if (options.round) {
|
|
value = +scale._adapter.startOf(value, options.round);
|
|
}
|
|
|
|
return value;
|
|
}
|
|
|
|
/**
|
|
* Returns the number of unit to skip to be able to display up to `capacity` number of ticks
|
|
* in `unit` for the given `min` / `max` range and respecting the interval steps constraints.
|
|
*/
|
|
function determineStepSize(min, max, unit, capacity) {
|
|
var range = max - min;
|
|
var interval = INTERVALS[unit];
|
|
var milliseconds = interval.size;
|
|
var steps = interval.steps;
|
|
var i, ilen, factor;
|
|
|
|
if (!steps) {
|
|
return Math.ceil(range / (capacity * milliseconds));
|
|
}
|
|
|
|
for (i = 0, ilen = steps.length; i < ilen; ++i) {
|
|
factor = steps[i];
|
|
if (Math.ceil(range / (milliseconds * factor)) <= capacity) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
return factor;
|
|
}
|
|
|
|
/**
|
|
* Figures out what unit results in an appropriate number of auto-generated ticks
|
|
*/
|
|
function determineUnitForAutoTicks(minUnit, min, max, capacity) {
|
|
var ilen = UNITS.length;
|
|
var i, interval, factor;
|
|
|
|
for (i = UNITS.indexOf(minUnit); i < ilen - 1; ++i) {
|
|
interval = INTERVALS[UNITS[i]];
|
|
factor = interval.steps ? interval.steps[interval.steps.length - 1] : MAX_INTEGER;
|
|
|
|
if (interval.common && Math.ceil((max - min) / (factor * interval.size)) <= capacity) {
|
|
return UNITS[i];
|
|
}
|
|
}
|
|
|
|
return UNITS[ilen - 1];
|
|
}
|
|
|
|
/**
|
|
* Figures out what unit to format a set of ticks with
|
|
*/
|
|
function determineUnitForFormatting(scale, ticks, minUnit, min, max) {
|
|
var ilen = UNITS.length;
|
|
var i, unit;
|
|
|
|
for (i = ilen - 1; i >= UNITS.indexOf(minUnit); i--) {
|
|
unit = UNITS[i];
|
|
if (INTERVALS[unit].common && scale._adapter.diff(max, min, unit) >= ticks.length) {
|
|
return unit;
|
|
}
|
|
}
|
|
|
|
return UNITS[minUnit ? UNITS.indexOf(minUnit) : 0];
|
|
}
|
|
|
|
function determineMajorUnit(unit) {
|
|
for (var i = UNITS.indexOf(unit) + 1, ilen = UNITS.length; i < ilen; ++i) {
|
|
if (INTERVALS[UNITS[i]].common) {
|
|
return UNITS[i];
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Generates a maximum of `capacity` timestamps between min and max, rounded to the
|
|
* `minor` unit, aligned on the `major` unit and using the given scale time `options`.
|
|
* Important: this method can return ticks outside the min and max range, it's the
|
|
* responsibility of the calling code to clamp values if needed.
|
|
*/
|
|
function generate(scale, min, max, capacity) {
|
|
var adapter = scale._adapter;
|
|
var options = scale.options;
|
|
var timeOpts = options.time;
|
|
var minor = timeOpts.unit || determineUnitForAutoTicks(timeOpts.minUnit, min, max, capacity);
|
|
var major = determineMajorUnit(minor);
|
|
var stepSize = valueOrDefault$c(timeOpts.stepSize, timeOpts.unitStepSize);
|
|
var weekday = minor === 'week' ? timeOpts.isoWeekday : false;
|
|
var majorTicksEnabled = options.ticks.major.enabled;
|
|
var interval = INTERVALS[minor];
|
|
var first = min;
|
|
var last = max;
|
|
var ticks = [];
|
|
var time;
|
|
|
|
if (!stepSize) {
|
|
stepSize = determineStepSize(min, max, minor, capacity);
|
|
}
|
|
|
|
// For 'week' unit, handle the first day of week option
|
|
if (weekday) {
|
|
first = +adapter.startOf(first, 'isoWeek', weekday);
|
|
last = +adapter.startOf(last, 'isoWeek', weekday);
|
|
}
|
|
|
|
// Align first/last ticks on unit
|
|
first = +adapter.startOf(first, weekday ? 'day' : minor);
|
|
last = +adapter.startOf(last, weekday ? 'day' : minor);
|
|
|
|
// Make sure that the last tick include max
|
|
if (last < max) {
|
|
last = +adapter.add(last, 1, minor);
|
|
}
|
|
|
|
time = first;
|
|
|
|
if (majorTicksEnabled && major && !weekday && !timeOpts.round) {
|
|
// Align the first tick on the previous `minor` unit aligned on the `major` unit:
|
|
// we first aligned time on the previous `major` unit then add the number of full
|
|
// stepSize there is between first and the previous major time.
|
|
time = +adapter.startOf(time, major);
|
|
time = +adapter.add(time, ~~((first - time) / (interval.size * stepSize)) * stepSize, minor);
|
|
}
|
|
|
|
for (; time < last; time = +adapter.add(time, stepSize, minor)) {
|
|
ticks.push(+time);
|
|
}
|
|
|
|
ticks.push(+time);
|
|
|
|
return ticks;
|
|
}
|
|
|
|
/**
|
|
* Returns the start and end offsets from edges in the form of {start, end}
|
|
* where each value is a relative width to the scale and ranges between 0 and 1.
|
|
* They add extra margins on the both sides by scaling down the original scale.
|
|
* Offsets are added when the `offset` option is true.
|
|
*/
|
|
function computeOffsets(table, ticks, min, max, options) {
|
|
var start = 0;
|
|
var end = 0;
|
|
var first, last;
|
|
|
|
if (options.offset && ticks.length) {
|
|
if (!options.time.min) {
|
|
first = interpolate$1(table, 'time', ticks[0], 'pos');
|
|
if (ticks.length === 1) {
|
|
start = 1 - first;
|
|
} else {
|
|
start = (interpolate$1(table, 'time', ticks[1], 'pos') - first) / 2;
|
|
}
|
|
}
|
|
if (!options.time.max) {
|
|
last = interpolate$1(table, 'time', ticks[ticks.length - 1], 'pos');
|
|
if (ticks.length === 1) {
|
|
end = last;
|
|
} else {
|
|
end = (last - interpolate$1(table, 'time', ticks[ticks.length - 2], 'pos')) / 2;
|
|
}
|
|
}
|
|
}
|
|
|
|
return {start: start, end: end};
|
|
}
|
|
|
|
function ticksFromTimestamps(scale, values, majorUnit) {
|
|
var ticks = [];
|
|
var i, ilen, value, major;
|
|
|
|
for (i = 0, ilen = values.length; i < ilen; ++i) {
|
|
value = values[i];
|
|
major = majorUnit ? value === +scale._adapter.startOf(value, majorUnit) : false;
|
|
|
|
ticks.push({
|
|
value: value,
|
|
major: major
|
|
});
|
|
}
|
|
|
|
return ticks;
|
|
}
|
|
|
|
var defaultConfig$4 = {
|
|
position: 'bottom',
|
|
|
|
/**
|
|
* Data distribution along the scale:
|
|
* - 'linear': data are spread according to their time (distances can vary),
|
|
* - 'series': data are spread at the same distance from each other.
|
|
* @see https://github.com/chartjs/Chart.js/pull/4507
|
|
* @since 2.7.0
|
|
*/
|
|
distribution: 'linear',
|
|
|
|
/**
|
|
* Scale boundary strategy (bypassed by min/max time options)
|
|
* - `data`: make sure data are fully visible, ticks outside are removed
|
|
* - `ticks`: make sure ticks are fully visible, data outside are truncated
|
|
* @see https://github.com/chartjs/Chart.js/pull/4556
|
|
* @since 2.7.0
|
|
*/
|
|
bounds: 'data',
|
|
|
|
adapters: {},
|
|
time: {
|
|
parser: false, // false == a pattern string from https://momentjs.com/docs/#/parsing/string-format/ or a custom callback that converts its argument to a moment
|
|
format: false, // DEPRECATED false == date objects, moment object, callback or a pattern string from https://momentjs.com/docs/#/parsing/string-format/
|
|
unit: false, // false == automatic or override with week, month, year, etc.
|
|
round: false, // none, or override with week, month, year, etc.
|
|
displayFormat: false, // DEPRECATED
|
|
isoWeekday: false, // override week start day - see https://momentjs.com/docs/#/get-set/iso-weekday/
|
|
minUnit: 'millisecond',
|
|
displayFormats: {}
|
|
},
|
|
ticks: {
|
|
autoSkip: false,
|
|
|
|
/**
|
|
* Ticks generation input values:
|
|
* - 'auto': generates "optimal" ticks based on scale size and time options.
|
|
* - 'data': generates ticks from data (including labels from data {t|x|y} objects).
|
|
* - 'labels': generates ticks from user given `data.labels` values ONLY.
|
|
* @see https://github.com/chartjs/Chart.js/pull/4507
|
|
* @since 2.7.0
|
|
*/
|
|
source: 'auto',
|
|
|
|
major: {
|
|
enabled: false
|
|
}
|
|
}
|
|
};
|
|
|
|
var scale_time = core_scale.extend({
|
|
initialize: function() {
|
|
this.mergeTicksOptions();
|
|
core_scale.prototype.initialize.call(this);
|
|
},
|
|
|
|
update: function() {
|
|
var me = this;
|
|
var options = me.options;
|
|
var time = options.time || (options.time = {});
|
|
var adapter = me._adapter = new core_adapters._date(options.adapters.date);
|
|
|
|
// DEPRECATIONS: output a message only one time per update
|
|
if (time.format) {
|
|
console.warn('options.time.format is deprecated and replaced by options.time.parser.');
|
|
}
|
|
|
|
// Backward compatibility: before introducing adapter, `displayFormats` was
|
|
// supposed to contain *all* unit/string pairs but this can't be resolved
|
|
// when loading the scale (adapters are loaded afterward), so let's populate
|
|
// missing formats on update
|
|
helpers$1.mergeIf(time.displayFormats, adapter.formats());
|
|
|
|
return core_scale.prototype.update.apply(me, arguments);
|
|
},
|
|
|
|
/**
|
|
* Allows data to be referenced via 't' attribute
|
|
*/
|
|
getRightValue: function(rawValue) {
|
|
if (rawValue && rawValue.t !== undefined) {
|
|
rawValue = rawValue.t;
|
|
}
|
|
return core_scale.prototype.getRightValue.call(this, rawValue);
|
|
},
|
|
|
|
determineDataLimits: function() {
|
|
var me = this;
|
|
var chart = me.chart;
|
|
var adapter = me._adapter;
|
|
var timeOpts = me.options.time;
|
|
var unit = timeOpts.unit || 'day';
|
|
var min = MAX_INTEGER;
|
|
var max = MIN_INTEGER;
|
|
var timestamps = [];
|
|
var datasets = [];
|
|
var labels = [];
|
|
var i, j, ilen, jlen, data, timestamp;
|
|
var dataLabels = chart.data.labels || [];
|
|
|
|
// Convert labels to timestamps
|
|
for (i = 0, ilen = dataLabels.length; i < ilen; ++i) {
|
|
labels.push(parse(me, dataLabels[i]));
|
|
}
|
|
|
|
// Convert data to timestamps
|
|
for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) {
|
|
if (chart.isDatasetVisible(i)) {
|
|
data = chart.data.datasets[i].data;
|
|
|
|
// Let's consider that all data have the same format.
|
|
if (helpers$1.isObject(data[0])) {
|
|
datasets[i] = [];
|
|
|
|
for (j = 0, jlen = data.length; j < jlen; ++j) {
|
|
timestamp = parse(me, data[j]);
|
|
timestamps.push(timestamp);
|
|
datasets[i][j] = timestamp;
|
|
}
|
|
} else {
|
|
for (j = 0, jlen = labels.length; j < jlen; ++j) {
|
|
timestamps.push(labels[j]);
|
|
}
|
|
datasets[i] = labels.slice(0);
|
|
}
|
|
} else {
|
|
datasets[i] = [];
|
|
}
|
|
}
|
|
|
|
if (labels.length) {
|
|
// Sort labels **after** data have been converted
|
|
labels = arrayUnique(labels).sort(sorter);
|
|
min = Math.min(min, labels[0]);
|
|
max = Math.max(max, labels[labels.length - 1]);
|
|
}
|
|
|
|
if (timestamps.length) {
|
|
timestamps = arrayUnique(timestamps).sort(sorter);
|
|
min = Math.min(min, timestamps[0]);
|
|
max = Math.max(max, timestamps[timestamps.length - 1]);
|
|
}
|
|
|
|
min = parse(me, timeOpts.min) || min;
|
|
max = parse(me, timeOpts.max) || max;
|
|
|
|
// In case there is no valid min/max, set limits based on unit time option
|
|
min = min === MAX_INTEGER ? +adapter.startOf(Date.now(), unit) : min;
|
|
max = max === MIN_INTEGER ? +adapter.endOf(Date.now(), unit) + 1 : max;
|
|
|
|
// Make sure that max is strictly higher than min (required by the lookup table)
|
|
me.min = Math.min(min, max);
|
|
me.max = Math.max(min + 1, max);
|
|
|
|
// PRIVATE
|
|
me._horizontal = me.isHorizontal();
|
|
me._table = [];
|
|
me._timestamps = {
|
|
data: timestamps,
|
|
datasets: datasets,
|
|
labels: labels
|
|
};
|
|
},
|
|
|
|
buildTicks: function() {
|
|
var me = this;
|
|
var min = me.min;
|
|
var max = me.max;
|
|
var options = me.options;
|
|
var timeOpts = options.time;
|
|
var timestamps = [];
|
|
var ticks = [];
|
|
var i, ilen, timestamp;
|
|
|
|
switch (options.ticks.source) {
|
|
case 'data':
|
|
timestamps = me._timestamps.data;
|
|
break;
|
|
case 'labels':
|
|
timestamps = me._timestamps.labels;
|
|
break;
|
|
case 'auto':
|
|
default:
|
|
timestamps = generate(me, min, max, me.getLabelCapacity(min), options);
|
|
}
|
|
|
|
if (options.bounds === 'ticks' && timestamps.length) {
|
|
min = timestamps[0];
|
|
max = timestamps[timestamps.length - 1];
|
|
}
|
|
|
|
// Enforce limits with user min/max options
|
|
min = parse(me, timeOpts.min) || min;
|
|
max = parse(me, timeOpts.max) || max;
|
|
|
|
// Remove ticks outside the min/max range
|
|
for (i = 0, ilen = timestamps.length; i < ilen; ++i) {
|
|
timestamp = timestamps[i];
|
|
if (timestamp >= min && timestamp <= max) {
|
|
ticks.push(timestamp);
|
|
}
|
|
}
|
|
|
|
me.min = min;
|
|
me.max = max;
|
|
|
|
// PRIVATE
|
|
me._unit = timeOpts.unit || determineUnitForFormatting(me, ticks, timeOpts.minUnit, me.min, me.max);
|
|
me._majorUnit = determineMajorUnit(me._unit);
|
|
me._table = buildLookupTable(me._timestamps.data, min, max, options.distribution);
|
|
me._offsets = computeOffsets(me._table, ticks, min, max, options);
|
|
|
|
if (options.ticks.reverse) {
|
|
ticks.reverse();
|
|
}
|
|
|
|
return ticksFromTimestamps(me, ticks, me._majorUnit);
|
|
},
|
|
|
|
getLabelForIndex: function(index, datasetIndex) {
|
|
var me = this;
|
|
var adapter = me._adapter;
|
|
var data = me.chart.data;
|
|
var timeOpts = me.options.time;
|
|
var label = data.labels && index < data.labels.length ? data.labels[index] : '';
|
|
var value = data.datasets[datasetIndex].data[index];
|
|
|
|
if (helpers$1.isObject(value)) {
|
|
label = me.getRightValue(value);
|
|
}
|
|
if (timeOpts.tooltipFormat) {
|
|
return adapter.format(toTimestamp(me, label), timeOpts.tooltipFormat);
|
|
}
|
|
if (typeof label === 'string') {
|
|
return label;
|
|
}
|
|
return adapter.format(toTimestamp(me, label), timeOpts.displayFormats.datetime);
|
|
},
|
|
|
|
/**
|
|
* Function to format an individual tick mark
|
|
* @private
|
|
*/
|
|
tickFormatFunction: function(time, index, ticks, format) {
|
|
var me = this;
|
|
var adapter = me._adapter;
|
|
var options = me.options;
|
|
var formats = options.time.displayFormats;
|
|
var minorFormat = formats[me._unit];
|
|
var majorUnit = me._majorUnit;
|
|
var majorFormat = formats[majorUnit];
|
|
var majorTime = +adapter.startOf(time, majorUnit);
|
|
var majorTickOpts = options.ticks.major;
|
|
var major = majorTickOpts.enabled && majorUnit && majorFormat && time === majorTime;
|
|
var label = adapter.format(time, format ? format : major ? majorFormat : minorFormat);
|
|
var tickOpts = major ? majorTickOpts : options.ticks.minor;
|
|
var formatter = valueOrDefault$c(tickOpts.callback, tickOpts.userCallback);
|
|
|
|
return formatter ? formatter(label, index, ticks) : label;
|
|
},
|
|
|
|
convertTicksToLabels: function(ticks) {
|
|
var labels = [];
|
|
var i, ilen;
|
|
|
|
for (i = 0, ilen = ticks.length; i < ilen; ++i) {
|
|
labels.push(this.tickFormatFunction(ticks[i].value, i, ticks));
|
|
}
|
|
|
|
return labels;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
getPixelForOffset: function(time) {
|
|
var me = this;
|
|
var isReverse = me.options.ticks.reverse;
|
|
var size = me._horizontal ? me.width : me.height;
|
|
var start = me._horizontal ? isReverse ? me.right : me.left : isReverse ? me.bottom : me.top;
|
|
var pos = interpolate$1(me._table, 'time', time, 'pos');
|
|
var offset = size * (me._offsets.start + pos) / (me._offsets.start + 1 + me._offsets.end);
|
|
|
|
return isReverse ? start - offset : start + offset;
|
|
},
|
|
|
|
getPixelForValue: function(value, index, datasetIndex) {
|
|
var me = this;
|
|
var time = null;
|
|
|
|
if (index !== undefined && datasetIndex !== undefined) {
|
|
time = me._timestamps.datasets[datasetIndex][index];
|
|
}
|
|
|
|
if (time === null) {
|
|
time = parse(me, value);
|
|
}
|
|
|
|
if (time !== null) {
|
|
return me.getPixelForOffset(time);
|
|
}
|
|
},
|
|
|
|
getPixelForTick: function(index) {
|
|
var ticks = this.getTicks();
|
|
return index >= 0 && index < ticks.length ?
|
|
this.getPixelForOffset(ticks[index].value) :
|
|
null;
|
|
},
|
|
|
|
getValueForPixel: function(pixel) {
|
|
var me = this;
|
|
var size = me._horizontal ? me.width : me.height;
|
|
var start = me._horizontal ? me.left : me.top;
|
|
var pos = (size ? (pixel - start) / size : 0) * (me._offsets.start + 1 + me._offsets.start) - me._offsets.end;
|
|
var time = interpolate$1(me._table, 'pos', pos, 'time');
|
|
|
|
// DEPRECATION, we should return time directly
|
|
return me._adapter._create(time);
|
|
},
|
|
|
|
/**
|
|
* Crude approximation of what the label width might be
|
|
* @private
|
|
*/
|
|
getLabelWidth: function(label) {
|
|
var me = this;
|
|
var ticksOpts = me.options.ticks;
|
|
var tickLabelWidth = me.ctx.measureText(label).width;
|
|
var angle = helpers$1.toRadians(ticksOpts.maxRotation);
|
|
var cosRotation = Math.cos(angle);
|
|
var sinRotation = Math.sin(angle);
|
|
var tickFontSize = valueOrDefault$c(ticksOpts.fontSize, core_defaults.global.defaultFontSize);
|
|
|
|
return (tickLabelWidth * cosRotation) + (tickFontSize * sinRotation);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
getLabelCapacity: function(exampleTime) {
|
|
var me = this;
|
|
|
|
// pick the longest format (milliseconds) for guestimation
|
|
var format = me.options.time.displayFormats.millisecond;
|
|
var exampleLabel = me.tickFormatFunction(exampleTime, 0, [], format);
|
|
var tickLabelWidth = me.getLabelWidth(exampleLabel);
|
|
var innerWidth = me.isHorizontal() ? me.width : me.height;
|
|
var capacity = Math.floor(innerWidth / tickLabelWidth);
|
|
|
|
return capacity > 0 ? capacity : 1;
|
|
}
|
|
});
|
|
|
|
// INTERNAL: static default options, registered in src/index.js
|
|
var _defaults$4 = defaultConfig$4;
|
|
scale_time._defaults = _defaults$4;
|
|
|
|
var scales = {
|
|
category: scale_category,
|
|
linear: scale_linear,
|
|
logarithmic: scale_logarithmic,
|
|
radialLinear: scale_radialLinear,
|
|
time: scale_time
|
|
};
|
|
|
|
var FORMATS = {
|
|
datetime: 'MMM D, YYYY, h:mm:ss a',
|
|
millisecond: 'h:mm:ss.SSS a',
|
|
second: 'h:mm:ss a',
|
|
minute: 'h:mm a',
|
|
hour: 'hA',
|
|
day: 'MMM D',
|
|
week: 'll',
|
|
month: 'MMM YYYY',
|
|
quarter: '[Q]Q - YYYY',
|
|
year: 'YYYY'
|
|
};
|
|
|
|
core_adapters._date.override(typeof moment === 'function' ? {
|
|
_id: 'moment', // DEBUG ONLY
|
|
|
|
formats: function() {
|
|
return FORMATS;
|
|
},
|
|
|
|
parse: function(value, format) {
|
|
if (typeof value === 'string' && typeof format === 'string') {
|
|
value = moment(value, format);
|
|
} else if (!(value instanceof moment)) {
|
|
value = moment(value);
|
|
}
|
|
return value.isValid() ? value.valueOf() : null;
|
|
},
|
|
|
|
format: function(time, format) {
|
|
return moment(time).format(format);
|
|
},
|
|
|
|
add: function(time, amount, unit) {
|
|
return moment(time).add(amount, unit).valueOf();
|
|
},
|
|
|
|
diff: function(max, min, unit) {
|
|
return moment.duration(moment(max).diff(moment(min))).as(unit);
|
|
},
|
|
|
|
startOf: function(time, unit, weekday) {
|
|
time = moment(time);
|
|
if (unit === 'isoWeek') {
|
|
return time.isoWeekday(weekday).valueOf();
|
|
}
|
|
return time.startOf(unit).valueOf();
|
|
},
|
|
|
|
endOf: function(time, unit) {
|
|
return moment(time).endOf(unit).valueOf();
|
|
},
|
|
|
|
// DEPRECATIONS
|
|
|
|
/**
|
|
* Provided for backward compatibility with scale.getValueForPixel().
|
|
* @deprecated since version 2.8.0
|
|
* @todo remove at version 3
|
|
* @private
|
|
*/
|
|
_create: function(time) {
|
|
return moment(time);
|
|
},
|
|
} : {});
|
|
|
|
core_defaults._set('global', {
|
|
plugins: {
|
|
filler: {
|
|
propagate: true
|
|
}
|
|
}
|
|
});
|
|
|
|
var mappers = {
|
|
dataset: function(source) {
|
|
var index = source.fill;
|
|
var chart = source.chart;
|
|
var meta = chart.getDatasetMeta(index);
|
|
var visible = meta && chart.isDatasetVisible(index);
|
|
var points = (visible && meta.dataset._children) || [];
|
|
var length = points.length || 0;
|
|
|
|
return !length ? null : function(point, i) {
|
|
return (i < length && points[i]._view) || null;
|
|
};
|
|
},
|
|
|
|
boundary: function(source) {
|
|
var boundary = source.boundary;
|
|
var x = boundary ? boundary.x : null;
|
|
var y = boundary ? boundary.y : null;
|
|
|
|
return function(point) {
|
|
return {
|
|
x: x === null ? point.x : x,
|
|
y: y === null ? point.y : y,
|
|
};
|
|
};
|
|
}
|
|
};
|
|
|
|
// @todo if (fill[0] === '#')
|
|
function decodeFill(el, index, count) {
|
|
var model = el._model || {};
|
|
var fill = model.fill;
|
|
var target;
|
|
|
|
if (fill === undefined) {
|
|
fill = !!model.backgroundColor;
|
|
}
|
|
|
|
if (fill === false || fill === null) {
|
|
return false;
|
|
}
|
|
|
|
if (fill === true) {
|
|
return 'origin';
|
|
}
|
|
|
|
target = parseFloat(fill, 10);
|
|
if (isFinite(target) && Math.floor(target) === target) {
|
|
if (fill[0] === '-' || fill[0] === '+') {
|
|
target = index + target;
|
|
}
|
|
|
|
if (target === index || target < 0 || target >= count) {
|
|
return false;
|
|
}
|
|
|
|
return target;
|
|
}
|
|
|
|
switch (fill) {
|
|
// compatibility
|
|
case 'bottom':
|
|
return 'start';
|
|
case 'top':
|
|
return 'end';
|
|
case 'zero':
|
|
return 'origin';
|
|
// supported boundaries
|
|
case 'origin':
|
|
case 'start':
|
|
case 'end':
|
|
return fill;
|
|
// invalid fill values
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
function computeBoundary(source) {
|
|
var model = source.el._model || {};
|
|
var scale = source.el._scale || {};
|
|
var fill = source.fill;
|
|
var target = null;
|
|
var horizontal;
|
|
|
|
if (isFinite(fill)) {
|
|
return null;
|
|
}
|
|
|
|
// Backward compatibility: until v3, we still need to support boundary values set on
|
|
// the model (scaleTop, scaleBottom and scaleZero) because some external plugins and
|
|
// controllers might still use it (e.g. the Smith chart).
|
|
|
|
if (fill === 'start') {
|
|
target = model.scaleBottom === undefined ? scale.bottom : model.scaleBottom;
|
|
} else if (fill === 'end') {
|
|
target = model.scaleTop === undefined ? scale.top : model.scaleTop;
|
|
} else if (model.scaleZero !== undefined) {
|
|
target = model.scaleZero;
|
|
} else if (scale.getBasePosition) {
|
|
target = scale.getBasePosition();
|
|
} else if (scale.getBasePixel) {
|
|
target = scale.getBasePixel();
|
|
}
|
|
|
|
if (target !== undefined && target !== null) {
|
|
if (target.x !== undefined && target.y !== undefined) {
|
|
return target;
|
|
}
|
|
|
|
if (helpers$1.isFinite(target)) {
|
|
horizontal = scale.isHorizontal();
|
|
return {
|
|
x: horizontal ? target : null,
|
|
y: horizontal ? null : target
|
|
};
|
|
}
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
function resolveTarget(sources, index, propagate) {
|
|
var source = sources[index];
|
|
var fill = source.fill;
|
|
var visited = [index];
|
|
var target;
|
|
|
|
if (!propagate) {
|
|
return fill;
|
|
}
|
|
|
|
while (fill !== false && visited.indexOf(fill) === -1) {
|
|
if (!isFinite(fill)) {
|
|
return fill;
|
|
}
|
|
|
|
target = sources[fill];
|
|
if (!target) {
|
|
return false;
|
|
}
|
|
|
|
if (target.visible) {
|
|
return fill;
|
|
}
|
|
|
|
visited.push(fill);
|
|
fill = target.fill;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
function createMapper(source) {
|
|
var fill = source.fill;
|
|
var type = 'dataset';
|
|
|
|
if (fill === false) {
|
|
return null;
|
|
}
|
|
|
|
if (!isFinite(fill)) {
|
|
type = 'boundary';
|
|
}
|
|
|
|
return mappers[type](source);
|
|
}
|
|
|
|
function isDrawable(point) {
|
|
return point && !point.skip;
|
|
}
|
|
|
|
function drawArea(ctx, curve0, curve1, len0, len1) {
|
|
var i;
|
|
|
|
if (!len0 || !len1) {
|
|
return;
|
|
}
|
|
|
|
// building first area curve (normal)
|
|
ctx.moveTo(curve0[0].x, curve0[0].y);
|
|
for (i = 1; i < len0; ++i) {
|
|
helpers$1.canvas.lineTo(ctx, curve0[i - 1], curve0[i]);
|
|
}
|
|
|
|
// joining the two area curves
|
|
ctx.lineTo(curve1[len1 - 1].x, curve1[len1 - 1].y);
|
|
|
|
// building opposite area curve (reverse)
|
|
for (i = len1 - 1; i > 0; --i) {
|
|
helpers$1.canvas.lineTo(ctx, curve1[i], curve1[i - 1], true);
|
|
}
|
|
}
|
|
|
|
function doFill(ctx, points, mapper, view, color, loop) {
|
|
var count = points.length;
|
|
var span = view.spanGaps;
|
|
var curve0 = [];
|
|
var curve1 = [];
|
|
var len0 = 0;
|
|
var len1 = 0;
|
|
var i, ilen, index, p0, p1, d0, d1;
|
|
|
|
ctx.beginPath();
|
|
|
|
for (i = 0, ilen = (count + !!loop); i < ilen; ++i) {
|
|
index = i % count;
|
|
p0 = points[index]._view;
|
|
p1 = mapper(p0, index, view);
|
|
d0 = isDrawable(p0);
|
|
d1 = isDrawable(p1);
|
|
|
|
if (d0 && d1) {
|
|
len0 = curve0.push(p0);
|
|
len1 = curve1.push(p1);
|
|
} else if (len0 && len1) {
|
|
if (!span) {
|
|
drawArea(ctx, curve0, curve1, len0, len1);
|
|
len0 = len1 = 0;
|
|
curve0 = [];
|
|
curve1 = [];
|
|
} else {
|
|
if (d0) {
|
|
curve0.push(p0);
|
|
}
|
|
if (d1) {
|
|
curve1.push(p1);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
drawArea(ctx, curve0, curve1, len0, len1);
|
|
|
|
ctx.closePath();
|
|
ctx.fillStyle = color;
|
|
ctx.fill();
|
|
}
|
|
|
|
var plugin_filler = {
|
|
id: 'filler',
|
|
|
|
afterDatasetsUpdate: function(chart, options) {
|
|
var count = (chart.data.datasets || []).length;
|
|
var propagate = options.propagate;
|
|
var sources = [];
|
|
var meta, i, el, source;
|
|
|
|
for (i = 0; i < count; ++i) {
|
|
meta = chart.getDatasetMeta(i);
|
|
el = meta.dataset;
|
|
source = null;
|
|
|
|
if (el && el._model && el instanceof elements.Line) {
|
|
source = {
|
|
visible: chart.isDatasetVisible(i),
|
|
fill: decodeFill(el, i, count),
|
|
chart: chart,
|
|
el: el
|
|
};
|
|
}
|
|
|
|
meta.$filler = source;
|
|
sources.push(source);
|
|
}
|
|
|
|
for (i = 0; i < count; ++i) {
|
|
source = sources[i];
|
|
if (!source) {
|
|
continue;
|
|
}
|
|
|
|
source.fill = resolveTarget(sources, i, propagate);
|
|
source.boundary = computeBoundary(source);
|
|
source.mapper = createMapper(source);
|
|
}
|
|
},
|
|
|
|
beforeDatasetDraw: function(chart, args) {
|
|
var meta = args.meta.$filler;
|
|
if (!meta) {
|
|
return;
|
|
}
|
|
|
|
var ctx = chart.ctx;
|
|
var el = meta.el;
|
|
var view = el._view;
|
|
var points = el._children || [];
|
|
var mapper = meta.mapper;
|
|
var color = view.backgroundColor || core_defaults.global.defaultColor;
|
|
|
|
if (mapper && color && points.length) {
|
|
helpers$1.canvas.clipArea(ctx, chart.chartArea);
|
|
doFill(ctx, points, mapper, view, color, el._loop);
|
|
helpers$1.canvas.unclipArea(ctx);
|
|
}
|
|
}
|
|
};
|
|
|
|
var noop$1 = helpers$1.noop;
|
|
var valueOrDefault$d = helpers$1.valueOrDefault;
|
|
|
|
core_defaults._set('global', {
|
|
legend: {
|
|
display: true,
|
|
position: 'top',
|
|
fullWidth: true,
|
|
reverse: false,
|
|
weight: 1000,
|
|
|
|
// a callback that will handle
|
|
onClick: function(e, legendItem) {
|
|
var index = legendItem.datasetIndex;
|
|
var ci = this.chart;
|
|
var meta = ci.getDatasetMeta(index);
|
|
|
|
// See controller.isDatasetVisible comment
|
|
meta.hidden = meta.hidden === null ? !ci.data.datasets[index].hidden : null;
|
|
|
|
// We hid a dataset ... rerender the chart
|
|
ci.update();
|
|
},
|
|
|
|
onHover: null,
|
|
onLeave: null,
|
|
|
|
labels: {
|
|
boxWidth: 40,
|
|
padding: 10,
|
|
// Generates labels shown in the legend
|
|
// Valid properties to return:
|
|
// text : text to display
|
|
// fillStyle : fill of coloured box
|
|
// strokeStyle: stroke of coloured box
|
|
// hidden : if this legend item refers to a hidden item
|
|
// lineCap : cap style for line
|
|
// lineDash
|
|
// lineDashOffset :
|
|
// lineJoin :
|
|
// lineWidth :
|
|
generateLabels: function(chart) {
|
|
var data = chart.data;
|
|
return helpers$1.isArray(data.datasets) ? data.datasets.map(function(dataset, i) {
|
|
return {
|
|
text: dataset.label,
|
|
fillStyle: (!helpers$1.isArray(dataset.backgroundColor) ? dataset.backgroundColor : dataset.backgroundColor[0]),
|
|
hidden: !chart.isDatasetVisible(i),
|
|
lineCap: dataset.borderCapStyle,
|
|
lineDash: dataset.borderDash,
|
|
lineDashOffset: dataset.borderDashOffset,
|
|
lineJoin: dataset.borderJoinStyle,
|
|
lineWidth: dataset.borderWidth,
|
|
strokeStyle: dataset.borderColor,
|
|
pointStyle: dataset.pointStyle,
|
|
|
|
// Below is extra data used for toggling the datasets
|
|
datasetIndex: i
|
|
};
|
|
}, this) : [];
|
|
}
|
|
}
|
|
},
|
|
|
|
legendCallback: function(chart) {
|
|
var text = [];
|
|
text.push('<ul class="' + chart.id + '-legend">');
|
|
for (var i = 0; i < chart.data.datasets.length; i++) {
|
|
text.push('<li><span style="background-color:' + chart.data.datasets[i].backgroundColor + '"></span>');
|
|
if (chart.data.datasets[i].label) {
|
|
text.push(chart.data.datasets[i].label);
|
|
}
|
|
text.push('</li>');
|
|
}
|
|
text.push('</ul>');
|
|
return text.join('');
|
|
}
|
|
});
|
|
|
|
/**
|
|
* Helper function to get the box width based on the usePointStyle option
|
|
* @param {object} labelopts - the label options on the legend
|
|
* @param {number} fontSize - the label font size
|
|
* @return {number} width of the color box area
|
|
*/
|
|
function getBoxWidth(labelOpts, fontSize) {
|
|
return labelOpts.usePointStyle && labelOpts.boxWidth > fontSize ?
|
|
fontSize :
|
|
labelOpts.boxWidth;
|
|
}
|
|
|
|
/**
|
|
* IMPORTANT: this class is exposed publicly as Chart.Legend, backward compatibility required!
|
|
*/
|
|
var Legend = core_element.extend({
|
|
|
|
initialize: function(config) {
|
|
helpers$1.extend(this, config);
|
|
|
|
// Contains hit boxes for each dataset (in dataset order)
|
|
this.legendHitBoxes = [];
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
this._hoveredItem = null;
|
|
|
|
// Are we in doughnut mode which has a different data type
|
|
this.doughnutMode = false;
|
|
},
|
|
|
|
// These methods are ordered by lifecycle. Utilities then follow.
|
|
// Any function defined here is inherited by all legend types.
|
|
// Any function can be extended by the legend type
|
|
|
|
beforeUpdate: noop$1,
|
|
update: function(maxWidth, maxHeight, margins) {
|
|
var me = this;
|
|
|
|
// Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
|
|
me.beforeUpdate();
|
|
|
|
// Absorb the master measurements
|
|
me.maxWidth = maxWidth;
|
|
me.maxHeight = maxHeight;
|
|
me.margins = margins;
|
|
|
|
// Dimensions
|
|
me.beforeSetDimensions();
|
|
me.setDimensions();
|
|
me.afterSetDimensions();
|
|
// Labels
|
|
me.beforeBuildLabels();
|
|
me.buildLabels();
|
|
me.afterBuildLabels();
|
|
|
|
// Fit
|
|
me.beforeFit();
|
|
me.fit();
|
|
me.afterFit();
|
|
//
|
|
me.afterUpdate();
|
|
|
|
return me.minSize;
|
|
},
|
|
afterUpdate: noop$1,
|
|
|
|
//
|
|
|
|
beforeSetDimensions: noop$1,
|
|
setDimensions: function() {
|
|
var me = this;
|
|
// Set the unconstrained dimension before label rotation
|
|
if (me.isHorizontal()) {
|
|
// Reset position before calculating rotation
|
|
me.width = me.maxWidth;
|
|
me.left = 0;
|
|
me.right = me.width;
|
|
} else {
|
|
me.height = me.maxHeight;
|
|
|
|
// Reset position before calculating rotation
|
|
me.top = 0;
|
|
me.bottom = me.height;
|
|
}
|
|
|
|
// Reset padding
|
|
me.paddingLeft = 0;
|
|
me.paddingTop = 0;
|
|
me.paddingRight = 0;
|
|
me.paddingBottom = 0;
|
|
|
|
// Reset minSize
|
|
me.minSize = {
|
|
width: 0,
|
|
height: 0
|
|
};
|
|
},
|
|
afterSetDimensions: noop$1,
|
|
|
|
//
|
|
|
|
beforeBuildLabels: noop$1,
|
|
buildLabels: function() {
|
|
var me = this;
|
|
var labelOpts = me.options.labels || {};
|
|
var legendItems = helpers$1.callback(labelOpts.generateLabels, [me.chart], me) || [];
|
|
|
|
if (labelOpts.filter) {
|
|
legendItems = legendItems.filter(function(item) {
|
|
return labelOpts.filter(item, me.chart.data);
|
|
});
|
|
}
|
|
|
|
if (me.options.reverse) {
|
|
legendItems.reverse();
|
|
}
|
|
|
|
me.legendItems = legendItems;
|
|
},
|
|
afterBuildLabels: noop$1,
|
|
|
|
//
|
|
|
|
beforeFit: noop$1,
|
|
fit: function() {
|
|
var me = this;
|
|
var opts = me.options;
|
|
var labelOpts = opts.labels;
|
|
var display = opts.display;
|
|
|
|
var ctx = me.ctx;
|
|
|
|
var labelFont = helpers$1.options._parseFont(labelOpts);
|
|
var fontSize = labelFont.size;
|
|
|
|
// Reset hit boxes
|
|
var hitboxes = me.legendHitBoxes = [];
|
|
|
|
var minSize = me.minSize;
|
|
var isHorizontal = me.isHorizontal();
|
|
|
|
if (isHorizontal) {
|
|
minSize.width = me.maxWidth; // fill all the width
|
|
minSize.height = display ? 10 : 0;
|
|
} else {
|
|
minSize.width = display ? 10 : 0;
|
|
minSize.height = me.maxHeight; // fill all the height
|
|
}
|
|
|
|
// Increase sizes here
|
|
if (display) {
|
|
ctx.font = labelFont.string;
|
|
|
|
if (isHorizontal) {
|
|
// Labels
|
|
|
|
// Width of each line of legend boxes. Labels wrap onto multiple lines when there are too many to fit on one
|
|
var lineWidths = me.lineWidths = [0];
|
|
var totalHeight = 0;
|
|
|
|
ctx.textAlign = 'left';
|
|
ctx.textBaseline = 'top';
|
|
|
|
helpers$1.each(me.legendItems, function(legendItem, i) {
|
|
var boxWidth = getBoxWidth(labelOpts, fontSize);
|
|
var width = boxWidth + (fontSize / 2) + ctx.measureText(legendItem.text).width;
|
|
|
|
if (i === 0 || lineWidths[lineWidths.length - 1] + width + labelOpts.padding > minSize.width) {
|
|
totalHeight += fontSize + labelOpts.padding;
|
|
lineWidths[lineWidths.length - (i > 0 ? 0 : 1)] = labelOpts.padding;
|
|
}
|
|
|
|
// Store the hitbox width and height here. Final position will be updated in `draw`
|
|
hitboxes[i] = {
|
|
left: 0,
|
|
top: 0,
|
|
width: width,
|
|
height: fontSize
|
|
};
|
|
|
|
lineWidths[lineWidths.length - 1] += width + labelOpts.padding;
|
|
});
|
|
|
|
minSize.height += totalHeight;
|
|
|
|
} else {
|
|
var vPadding = labelOpts.padding;
|
|
var columnWidths = me.columnWidths = [];
|
|
var totalWidth = labelOpts.padding;
|
|
var currentColWidth = 0;
|
|
var currentColHeight = 0;
|
|
var itemHeight = fontSize + vPadding;
|
|
|
|
helpers$1.each(me.legendItems, function(legendItem, i) {
|
|
var boxWidth = getBoxWidth(labelOpts, fontSize);
|
|
var itemWidth = boxWidth + (fontSize / 2) + ctx.measureText(legendItem.text).width;
|
|
|
|
// If too tall, go to new column
|
|
if (i > 0 && currentColHeight + itemHeight > minSize.height - vPadding) {
|
|
totalWidth += currentColWidth + labelOpts.padding;
|
|
columnWidths.push(currentColWidth); // previous column width
|
|
|
|
currentColWidth = 0;
|
|
currentColHeight = 0;
|
|
}
|
|
|
|
// Get max width
|
|
currentColWidth = Math.max(currentColWidth, itemWidth);
|
|
currentColHeight += itemHeight;
|
|
|
|
// Store the hitbox width and height here. Final position will be updated in `draw`
|
|
hitboxes[i] = {
|
|
left: 0,
|
|
top: 0,
|
|
width: itemWidth,
|
|
height: fontSize
|
|
};
|
|
});
|
|
|
|
totalWidth += currentColWidth;
|
|
columnWidths.push(currentColWidth);
|
|
minSize.width += totalWidth;
|
|
}
|
|
}
|
|
|
|
me.width = minSize.width;
|
|
me.height = minSize.height;
|
|
},
|
|
afterFit: noop$1,
|
|
|
|
// Shared Methods
|
|
isHorizontal: function() {
|
|
return this.options.position === 'top' || this.options.position === 'bottom';
|
|
},
|
|
|
|
// Actually draw the legend on the canvas
|
|
draw: function() {
|
|
var me = this;
|
|
var opts = me.options;
|
|
var labelOpts = opts.labels;
|
|
var globalDefaults = core_defaults.global;
|
|
var defaultColor = globalDefaults.defaultColor;
|
|
var lineDefault = globalDefaults.elements.line;
|
|
var legendWidth = me.width;
|
|
var lineWidths = me.lineWidths;
|
|
|
|
if (opts.display) {
|
|
var ctx = me.ctx;
|
|
var fontColor = valueOrDefault$d(labelOpts.fontColor, globalDefaults.defaultFontColor);
|
|
var labelFont = helpers$1.options._parseFont(labelOpts);
|
|
var fontSize = labelFont.size;
|
|
var cursor;
|
|
|
|
// Canvas setup
|
|
ctx.textAlign = 'left';
|
|
ctx.textBaseline = 'middle';
|
|
ctx.lineWidth = 0.5;
|
|
ctx.strokeStyle = fontColor; // for strikethrough effect
|
|
ctx.fillStyle = fontColor; // render in correct colour
|
|
ctx.font = labelFont.string;
|
|
|
|
var boxWidth = getBoxWidth(labelOpts, fontSize);
|
|
var hitboxes = me.legendHitBoxes;
|
|
|
|
// current position
|
|
var drawLegendBox = function(x, y, legendItem) {
|
|
if (isNaN(boxWidth) || boxWidth <= 0) {
|
|
return;
|
|
}
|
|
|
|
// Set the ctx for the box
|
|
ctx.save();
|
|
|
|
var lineWidth = valueOrDefault$d(legendItem.lineWidth, lineDefault.borderWidth);
|
|
ctx.fillStyle = valueOrDefault$d(legendItem.fillStyle, defaultColor);
|
|
ctx.lineCap = valueOrDefault$d(legendItem.lineCap, lineDefault.borderCapStyle);
|
|
ctx.lineDashOffset = valueOrDefault$d(legendItem.lineDashOffset, lineDefault.borderDashOffset);
|
|
ctx.lineJoin = valueOrDefault$d(legendItem.lineJoin, lineDefault.borderJoinStyle);
|
|
ctx.lineWidth = lineWidth;
|
|
ctx.strokeStyle = valueOrDefault$d(legendItem.strokeStyle, defaultColor);
|
|
|
|
if (ctx.setLineDash) {
|
|
// IE 9 and 10 do not support line dash
|
|
ctx.setLineDash(valueOrDefault$d(legendItem.lineDash, lineDefault.borderDash));
|
|
}
|
|
|
|
if (opts.labels && opts.labels.usePointStyle) {
|
|
// Recalculate x and y for drawPoint() because its expecting
|
|
// x and y to be center of figure (instead of top left)
|
|
var radius = boxWidth * Math.SQRT2 / 2;
|
|
var centerX = x + boxWidth / 2;
|
|
var centerY = y + fontSize / 2;
|
|
|
|
// Draw pointStyle as legend symbol
|
|
helpers$1.canvas.drawPoint(ctx, legendItem.pointStyle, radius, centerX, centerY);
|
|
} else {
|
|
// Draw box as legend symbol
|
|
if (lineWidth !== 0) {
|
|
ctx.strokeRect(x, y, boxWidth, fontSize);
|
|
}
|
|
ctx.fillRect(x, y, boxWidth, fontSize);
|
|
}
|
|
|
|
ctx.restore();
|
|
};
|
|
var fillText = function(x, y, legendItem, textWidth) {
|
|
var halfFontSize = fontSize / 2;
|
|
var xLeft = boxWidth + halfFontSize + x;
|
|
var yMiddle = y + halfFontSize;
|
|
|
|
ctx.fillText(legendItem.text, xLeft, yMiddle);
|
|
|
|
if (legendItem.hidden) {
|
|
// Strikethrough the text if hidden
|
|
ctx.beginPath();
|
|
ctx.lineWidth = 2;
|
|
ctx.moveTo(xLeft, yMiddle);
|
|
ctx.lineTo(xLeft + textWidth, yMiddle);
|
|
ctx.stroke();
|
|
}
|
|
};
|
|
|
|
// Horizontal
|
|
var isHorizontal = me.isHorizontal();
|
|
if (isHorizontal) {
|
|
cursor = {
|
|
x: me.left + ((legendWidth - lineWidths[0]) / 2) + labelOpts.padding,
|
|
y: me.top + labelOpts.padding,
|
|
line: 0
|
|
};
|
|
} else {
|
|
cursor = {
|
|
x: me.left + labelOpts.padding,
|
|
y: me.top + labelOpts.padding,
|
|
line: 0
|
|
};
|
|
}
|
|
|
|
var itemHeight = fontSize + labelOpts.padding;
|
|
helpers$1.each(me.legendItems, function(legendItem, i) {
|
|
var textWidth = ctx.measureText(legendItem.text).width;
|
|
var width = boxWidth + (fontSize / 2) + textWidth;
|
|
var x = cursor.x;
|
|
var y = cursor.y;
|
|
|
|
// Use (me.left + me.minSize.width) and (me.top + me.minSize.height)
|
|
// instead of me.right and me.bottom because me.width and me.height
|
|
// may have been changed since me.minSize was calculated
|
|
if (isHorizontal) {
|
|
if (i > 0 && x + width + labelOpts.padding > me.left + me.minSize.width) {
|
|
y = cursor.y += itemHeight;
|
|
cursor.line++;
|
|
x = cursor.x = me.left + ((legendWidth - lineWidths[cursor.line]) / 2) + labelOpts.padding;
|
|
}
|
|
} else if (i > 0 && y + itemHeight > me.top + me.minSize.height) {
|
|
x = cursor.x = x + me.columnWidths[cursor.line] + labelOpts.padding;
|
|
y = cursor.y = me.top + labelOpts.padding;
|
|
cursor.line++;
|
|
}
|
|
|
|
drawLegendBox(x, y, legendItem);
|
|
|
|
hitboxes[i].left = x;
|
|
hitboxes[i].top = y;
|
|
|
|
// Fill the actual label
|
|
fillText(x, y, legendItem, textWidth);
|
|
|
|
if (isHorizontal) {
|
|
cursor.x += width + labelOpts.padding;
|
|
} else {
|
|
cursor.y += itemHeight;
|
|
}
|
|
|
|
});
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_getLegendItemAt: function(x, y) {
|
|
var me = this;
|
|
var i, hitBox, lh;
|
|
|
|
if (x >= me.left && x <= me.right && y >= me.top && y <= me.bottom) {
|
|
// See if we are touching one of the dataset boxes
|
|
lh = me.legendHitBoxes;
|
|
for (i = 0; i < lh.length; ++i) {
|
|
hitBox = lh[i];
|
|
|
|
if (x >= hitBox.left && x <= hitBox.left + hitBox.width && y >= hitBox.top && y <= hitBox.top + hitBox.height) {
|
|
// Touching an element
|
|
return me.legendItems[i];
|
|
}
|
|
}
|
|
}
|
|
|
|
return null;
|
|
},
|
|
|
|
/**
|
|
* Handle an event
|
|
* @private
|
|
* @param {IEvent} event - The event to handle
|
|
*/
|
|
handleEvent: function(e) {
|
|
var me = this;
|
|
var opts = me.options;
|
|
var type = e.type === 'mouseup' ? 'click' : e.type;
|
|
var hoveredItem;
|
|
|
|
if (type === 'mousemove') {
|
|
if (!opts.onHover && !opts.onLeave) {
|
|
return;
|
|
}
|
|
} else if (type === 'click') {
|
|
if (!opts.onClick) {
|
|
return;
|
|
}
|
|
} else {
|
|
return;
|
|
}
|
|
|
|
// Chart event already has relative position in it
|
|
hoveredItem = me._getLegendItemAt(e.x, e.y);
|
|
|
|
if (type === 'click') {
|
|
if (hoveredItem && opts.onClick) {
|
|
// use e.native for backwards compatibility
|
|
opts.onClick.call(me, e.native, hoveredItem);
|
|
}
|
|
} else {
|
|
if (opts.onLeave && hoveredItem !== me._hoveredItem) {
|
|
if (me._hoveredItem) {
|
|
opts.onLeave.call(me, e.native, me._hoveredItem);
|
|
}
|
|
me._hoveredItem = hoveredItem;
|
|
}
|
|
|
|
if (opts.onHover && hoveredItem) {
|
|
// use e.native for backwards compatibility
|
|
opts.onHover.call(me, e.native, hoveredItem);
|
|
}
|
|
}
|
|
}
|
|
});
|
|
|
|
function createNewLegendAndAttach(chart, legendOpts) {
|
|
var legend = new Legend({
|
|
ctx: chart.ctx,
|
|
options: legendOpts,
|
|
chart: chart
|
|
});
|
|
|
|
core_layouts.configure(chart, legend, legendOpts);
|
|
core_layouts.addBox(chart, legend);
|
|
chart.legend = legend;
|
|
}
|
|
|
|
var plugin_legend = {
|
|
id: 'legend',
|
|
|
|
/**
|
|
* Backward compatibility: since 2.1.5, the legend is registered as a plugin, making
|
|
* Chart.Legend obsolete. To avoid a breaking change, we export the Legend as part of
|
|
* the plugin, which one will be re-exposed in the chart.js file.
|
|
* https://github.com/chartjs/Chart.js/pull/2640
|
|
* @private
|
|
*/
|
|
_element: Legend,
|
|
|
|
beforeInit: function(chart) {
|
|
var legendOpts = chart.options.legend;
|
|
|
|
if (legendOpts) {
|
|
createNewLegendAndAttach(chart, legendOpts);
|
|
}
|
|
},
|
|
|
|
beforeUpdate: function(chart) {
|
|
var legendOpts = chart.options.legend;
|
|
var legend = chart.legend;
|
|
|
|
if (legendOpts) {
|
|
helpers$1.mergeIf(legendOpts, core_defaults.global.legend);
|
|
|
|
if (legend) {
|
|
core_layouts.configure(chart, legend, legendOpts);
|
|
legend.options = legendOpts;
|
|
} else {
|
|
createNewLegendAndAttach(chart, legendOpts);
|
|
}
|
|
} else if (legend) {
|
|
core_layouts.removeBox(chart, legend);
|
|
delete chart.legend;
|
|
}
|
|
},
|
|
|
|
afterEvent: function(chart, e) {
|
|
var legend = chart.legend;
|
|
if (legend) {
|
|
legend.handleEvent(e);
|
|
}
|
|
}
|
|
};
|
|
|
|
var noop$2 = helpers$1.noop;
|
|
|
|
core_defaults._set('global', {
|
|
title: {
|
|
display: false,
|
|
fontStyle: 'bold',
|
|
fullWidth: true,
|
|
padding: 10,
|
|
position: 'top',
|
|
text: '',
|
|
weight: 2000 // by default greater than legend (1000) to be above
|
|
}
|
|
});
|
|
|
|
/**
|
|
* IMPORTANT: this class is exposed publicly as Chart.Legend, backward compatibility required!
|
|
*/
|
|
var Title = core_element.extend({
|
|
initialize: function(config) {
|
|
var me = this;
|
|
helpers$1.extend(me, config);
|
|
|
|
// Contains hit boxes for each dataset (in dataset order)
|
|
me.legendHitBoxes = [];
|
|
},
|
|
|
|
// These methods are ordered by lifecycle. Utilities then follow.
|
|
|
|
beforeUpdate: noop$2,
|
|
update: function(maxWidth, maxHeight, margins) {
|
|
var me = this;
|
|
|
|
// Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
|
|
me.beforeUpdate();
|
|
|
|
// Absorb the master measurements
|
|
me.maxWidth = maxWidth;
|
|
me.maxHeight = maxHeight;
|
|
me.margins = margins;
|
|
|
|
// Dimensions
|
|
me.beforeSetDimensions();
|
|
me.setDimensions();
|
|
me.afterSetDimensions();
|
|
// Labels
|
|
me.beforeBuildLabels();
|
|
me.buildLabels();
|
|
me.afterBuildLabels();
|
|
|
|
// Fit
|
|
me.beforeFit();
|
|
me.fit();
|
|
me.afterFit();
|
|
//
|
|
me.afterUpdate();
|
|
|
|
return me.minSize;
|
|
|
|
},
|
|
afterUpdate: noop$2,
|
|
|
|
//
|
|
|
|
beforeSetDimensions: noop$2,
|
|
setDimensions: function() {
|
|
var me = this;
|
|
// Set the unconstrained dimension before label rotation
|
|
if (me.isHorizontal()) {
|
|
// Reset position before calculating rotation
|
|
me.width = me.maxWidth;
|
|
me.left = 0;
|
|
me.right = me.width;
|
|
} else {
|
|
me.height = me.maxHeight;
|
|
|
|
// Reset position before calculating rotation
|
|
me.top = 0;
|
|
me.bottom = me.height;
|
|
}
|
|
|
|
// Reset padding
|
|
me.paddingLeft = 0;
|
|
me.paddingTop = 0;
|
|
me.paddingRight = 0;
|
|
me.paddingBottom = 0;
|
|
|
|
// Reset minSize
|
|
me.minSize = {
|
|
width: 0,
|
|
height: 0
|
|
};
|
|
},
|
|
afterSetDimensions: noop$2,
|
|
|
|
//
|
|
|
|
beforeBuildLabels: noop$2,
|
|
buildLabels: noop$2,
|
|
afterBuildLabels: noop$2,
|
|
|
|
//
|
|
|
|
beforeFit: noop$2,
|
|
fit: function() {
|
|
var me = this;
|
|
var opts = me.options;
|
|
var display = opts.display;
|
|
var minSize = me.minSize;
|
|
var lineCount = helpers$1.isArray(opts.text) ? opts.text.length : 1;
|
|
var fontOpts = helpers$1.options._parseFont(opts);
|
|
var textSize = display ? (lineCount * fontOpts.lineHeight) + (opts.padding * 2) : 0;
|
|
|
|
if (me.isHorizontal()) {
|
|
minSize.width = me.maxWidth; // fill all the width
|
|
minSize.height = textSize;
|
|
} else {
|
|
minSize.width = textSize;
|
|
minSize.height = me.maxHeight; // fill all the height
|
|
}
|
|
|
|
me.width = minSize.width;
|
|
me.height = minSize.height;
|
|
|
|
},
|
|
afterFit: noop$2,
|
|
|
|
// Shared Methods
|
|
isHorizontal: function() {
|
|
var pos = this.options.position;
|
|
return pos === 'top' || pos === 'bottom';
|
|
},
|
|
|
|
// Actually draw the title block on the canvas
|
|
draw: function() {
|
|
var me = this;
|
|
var ctx = me.ctx;
|
|
var opts = me.options;
|
|
|
|
if (opts.display) {
|
|
var fontOpts = helpers$1.options._parseFont(opts);
|
|
var lineHeight = fontOpts.lineHeight;
|
|
var offset = lineHeight / 2 + opts.padding;
|
|
var rotation = 0;
|
|
var top = me.top;
|
|
var left = me.left;
|
|
var bottom = me.bottom;
|
|
var right = me.right;
|
|
var maxWidth, titleX, titleY;
|
|
|
|
ctx.fillStyle = helpers$1.valueOrDefault(opts.fontColor, core_defaults.global.defaultFontColor); // render in correct colour
|
|
ctx.font = fontOpts.string;
|
|
|
|
// Horizontal
|
|
if (me.isHorizontal()) {
|
|
titleX = left + ((right - left) / 2); // midpoint of the width
|
|
titleY = top + offset;
|
|
maxWidth = right - left;
|
|
} else {
|
|
titleX = opts.position === 'left' ? left + offset : right - offset;
|
|
titleY = top + ((bottom - top) / 2);
|
|
maxWidth = bottom - top;
|
|
rotation = Math.PI * (opts.position === 'left' ? -0.5 : 0.5);
|
|
}
|
|
|
|
ctx.save();
|
|
ctx.translate(titleX, titleY);
|
|
ctx.rotate(rotation);
|
|
ctx.textAlign = 'center';
|
|
ctx.textBaseline = 'middle';
|
|
|
|
var text = opts.text;
|
|
if (helpers$1.isArray(text)) {
|
|
var y = 0;
|
|
for (var i = 0; i < text.length; ++i) {
|
|
ctx.fillText(text[i], 0, y, maxWidth);
|
|
y += lineHeight;
|
|
}
|
|
} else {
|
|
ctx.fillText(text, 0, 0, maxWidth);
|
|
}
|
|
|
|
ctx.restore();
|
|
}
|
|
}
|
|
});
|
|
|
|
function createNewTitleBlockAndAttach(chart, titleOpts) {
|
|
var title = new Title({
|
|
ctx: chart.ctx,
|
|
options: titleOpts,
|
|
chart: chart
|
|
});
|
|
|
|
core_layouts.configure(chart, title, titleOpts);
|
|
core_layouts.addBox(chart, title);
|
|
chart.titleBlock = title;
|
|
}
|
|
|
|
var plugin_title = {
|
|
id: 'title',
|
|
|
|
/**
|
|
* Backward compatibility: since 2.1.5, the title is registered as a plugin, making
|
|
* Chart.Title obsolete. To avoid a breaking change, we export the Title as part of
|
|
* the plugin, which one will be re-exposed in the chart.js file.
|
|
* https://github.com/chartjs/Chart.js/pull/2640
|
|
* @private
|
|
*/
|
|
_element: Title,
|
|
|
|
beforeInit: function(chart) {
|
|
var titleOpts = chart.options.title;
|
|
|
|
if (titleOpts) {
|
|
createNewTitleBlockAndAttach(chart, titleOpts);
|
|
}
|
|
},
|
|
|
|
beforeUpdate: function(chart) {
|
|
var titleOpts = chart.options.title;
|
|
var titleBlock = chart.titleBlock;
|
|
|
|
if (titleOpts) {
|
|
helpers$1.mergeIf(titleOpts, core_defaults.global.title);
|
|
|
|
if (titleBlock) {
|
|
core_layouts.configure(chart, titleBlock, titleOpts);
|
|
titleBlock.options = titleOpts;
|
|
} else {
|
|
createNewTitleBlockAndAttach(chart, titleOpts);
|
|
}
|
|
} else if (titleBlock) {
|
|
core_layouts.removeBox(chart, titleBlock);
|
|
delete chart.titleBlock;
|
|
}
|
|
}
|
|
};
|
|
|
|
var plugins = {};
|
|
var filler = plugin_filler;
|
|
var legend = plugin_legend;
|
|
var title = plugin_title;
|
|
plugins.filler = filler;
|
|
plugins.legend = legend;
|
|
plugins.title = title;
|
|
|
|
/**
|
|
* @namespace Chart
|
|
*/
|
|
|
|
|
|
core_controller.helpers = helpers$1;
|
|
|
|
// @todo dispatch these helpers into appropriated helpers/helpers.* file and write unit tests!
|
|
core_helpers(core_controller);
|
|
|
|
core_controller._adapters = core_adapters;
|
|
core_controller.Animation = core_animation;
|
|
core_controller.animationService = core_animations;
|
|
core_controller.controllers = controllers;
|
|
core_controller.DatasetController = core_datasetController;
|
|
core_controller.defaults = core_defaults;
|
|
core_controller.Element = core_element;
|
|
core_controller.elements = elements;
|
|
core_controller.Interaction = core_interaction;
|
|
core_controller.layouts = core_layouts;
|
|
core_controller.platform = platform;
|
|
core_controller.plugins = core_plugins;
|
|
core_controller.Scale = core_scale;
|
|
core_controller.scaleService = core_scaleService;
|
|
core_controller.Ticks = core_ticks;
|
|
core_controller.Tooltip = core_tooltip;
|
|
|
|
// Register built-in scales
|
|
|
|
core_controller.helpers.each(scales, function(scale, type) {
|
|
core_controller.scaleService.registerScaleType(type, scale, scale._defaults);
|
|
});
|
|
|
|
// Load to register built-in adapters (as side effects)
|
|
|
|
|
|
// Loading built-in plugins
|
|
|
|
for (var k in plugins) {
|
|
if (plugins.hasOwnProperty(k)) {
|
|
core_controller.plugins.register(plugins[k]);
|
|
}
|
|
}
|
|
|
|
core_controller.platform.initialize();
|
|
|
|
var src = core_controller;
|
|
if (typeof window !== 'undefined') {
|
|
window.Chart = core_controller;
|
|
}
|
|
|
|
// DEPRECATIONS
|
|
|
|
/**
|
|
* Provided for backward compatibility, not available anymore
|
|
* @namespace Chart.Chart
|
|
* @deprecated since version 2.8.0
|
|
* @todo remove at version 3
|
|
* @private
|
|
*/
|
|
core_controller.Chart = core_controller;
|
|
|
|
/**
|
|
* Provided for backward compatibility, not available anymore
|
|
* @namespace Chart.Legend
|
|
* @deprecated since version 2.1.5
|
|
* @todo remove at version 3
|
|
* @private
|
|
*/
|
|
core_controller.Legend = plugins.legend._element;
|
|
|
|
/**
|
|
* Provided for backward compatibility, not available anymore
|
|
* @namespace Chart.Title
|
|
* @deprecated since version 2.1.5
|
|
* @todo remove at version 3
|
|
* @private
|
|
*/
|
|
core_controller.Title = plugins.title._element;
|
|
|
|
/**
|
|
* Provided for backward compatibility, use Chart.plugins instead
|
|
* @namespace Chart.pluginService
|
|
* @deprecated since version 2.1.5
|
|
* @todo remove at version 3
|
|
* @private
|
|
*/
|
|
core_controller.pluginService = core_controller.plugins;
|
|
|
|
/**
|
|
* Provided for backward compatibility, inheriting from Chart.PlugingBase has no
|
|
* effect, instead simply create/register plugins via plain JavaScript objects.
|
|
* @interface Chart.PluginBase
|
|
* @deprecated since version 2.5.0
|
|
* @todo remove at version 3
|
|
* @private
|
|
*/
|
|
core_controller.PluginBase = core_controller.Element.extend({});
|
|
|
|
/**
|
|
* Provided for backward compatibility, use Chart.helpers.canvas instead.
|
|
* @namespace Chart.canvasHelpers
|
|
* @deprecated since version 2.6.0
|
|
* @todo remove at version 3
|
|
* @private
|
|
*/
|
|
core_controller.canvasHelpers = core_controller.helpers.canvas;
|
|
|
|
/**
|
|
* Provided for backward compatibility, use Chart.layouts instead.
|
|
* @namespace Chart.layoutService
|
|
* @deprecated since version 2.7.3
|
|
* @todo remove at version 3
|
|
* @private
|
|
*/
|
|
core_controller.layoutService = core_controller.layouts;
|
|
|
|
/**
|
|
* Provided for backward compatibility, not available anymore.
|
|
* @namespace Chart.LinearScaleBase
|
|
* @deprecated since version 2.8
|
|
* @todo remove at version 3
|
|
* @private
|
|
*/
|
|
core_controller.LinearScaleBase = scale_linearbase;
|
|
|
|
/**
|
|
* Provided for backward compatibility, instead we should create a new Chart
|
|
* by setting the type in the config (`new Chart(id, {type: '{chart-type}'}`).
|
|
* @deprecated since version 2.8.0
|
|
* @todo remove at version 3
|
|
*/
|
|
core_controller.helpers.each(
|
|
[
|
|
'Bar',
|
|
'Bubble',
|
|
'Doughnut',
|
|
'Line',
|
|
'PolarArea',
|
|
'Radar',
|
|
'Scatter'
|
|
],
|
|
function(klass) {
|
|
core_controller[klass] = function(ctx, cfg) {
|
|
return new core_controller(ctx, core_controller.helpers.merge(cfg || {}, {
|
|
type: klass.charAt(0).toLowerCase() + klass.slice(1)
|
|
}));
|
|
};
|
|
}
|
|
);
|
|
|
|
return src;
|
|
|
|
})));
|