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Code Issues Releases Wiki Activity

Implemented drawing "transparent" texts

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This commit is contained in:
Klaus Schmidinger 2004-06-05 11:42:08 +02:00
parent 2a5a55cee7
commit 00645daa93
4 changed files with 14 additions and 6 deletions
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1
CONTRIBUTORS
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@ -715,6 +715,7 @@ Sascha Volkenandt <sascha@akv-soft.de>
bitmap area is covered
for reporting a bug in cBitmap::DrawPixel(), which messed with other bitmaps'
palettes in case the pixel coordinates were outside this bitmap
for suggesting to allow drawing "transparent" texts
Malcolm Caldwell <malcolm.caldwell@ntu.edu.au>
for modifying LOF handling to allow for C-band reception

3
HISTORY
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@ -2876,3 +2876,6 @@ Video Disk Recorder Revision History
- Fixed cBitmap::DrawPixel(), which messed with other bitmaps' palettes in case
the pixel coordinates were outside this bitmap (thanks to Sascha Volkenandt for
reporting this one).
- The cBitmap::DrawText() function now doesn't set any background pixels if the
given background color is clrTransparent. This allows drawing "transparent"
texts (suggested by Sascha Volkenandt).

4
osd.c
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@ -4,7 +4,7 @@
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: osd.c 1.49 2004/06/05 11:15:43 kls Exp $
* $Id: osd.c 1.50 2004/06/05 11:37:42 kls Exp $
*/
#include "osd.h"
@ -355,6 +355,7 @@ void cBitmap::DrawText(int x, int y, const char *s, tColor ColorFg, tColor Color
int ch = Height ? Height : h;
if (!Intersects(x, y, x + cw - 1, y + ch - 1))
return;
if (ColorBg != clrTransparent)
DrawRectangle(x, y, x + cw - 1, y + ch - 1, ColorBg);
limit = x + cw - x0;
if (Width) {
@ -396,6 +397,7 @@ void cBitmap::DrawText(int x, int y, const char *s, tColor ColorFg, tColor Color
for (int row = 0; row < h; row++) {
cFont::tPixelData PixelData = CharData->lines[row];
for (int col = CharData->width; col-- > 0; ) {
if (ColorBg != clrTransparent || (PixelData & 1))
SetIndex(x + col, y + row, (PixelData & 1) ? fg : bg);
PixelData >>= 1;
}

8
osd.h
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@ -4,7 +4,7 @@
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: osd.h 1.43 2004/05/31 14:09:00 kls Exp $
* $Id: osd.h 1.44 2004/06/05 11:40:12 kls Exp $
*/
#ifndef __OSD_H
@ -158,7 +158,8 @@ public:
///< Draws the given string at coordinates (x, y) with the given foreground
///< and background color and font. If Width and Height are given, the text
///< will be drawn into a rectangle with the given size and the given
///< Alignment (default is top-left).
///< Alignment (default is top-left). If ColorBg is clrTransparent, no
///< background pixels will be drawn, which allows drawing "transparent" text.
void DrawRectangle(int x1, int y1, int x2, int y2, tColor Color);
///< Draws a filled rectangle defined by the upper left (x1, y1) and lower right
///< (x2, y2) corners with the given Color. If the rectangle covers the entire
@ -276,7 +277,8 @@ public:
///< Draws the given string at coordinates (x, y) with the given foreground
///< and background color and font. If Width and Height are given, the text
///< will be drawn into a rectangle with the given size and the given
///< Alignment (default is top-left).
///< Alignment (default is top-left). If ColorBg is clrTransparent, no
///< background pixels will be drawn, which allows drawing "transparent" text.
virtual void DrawRectangle(int x1, int y1, int x2, int y2, tColor Color);
///< Draws a filled rectangle defined by the upper left (x1, y1) and lower right
///< (x2, y2) corners with the given Color.