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vdr/osd.c
Klaus Schmidinger 5076cfb2ed Version 2.1.1 
VDR developer version 2.1.1 is now available at

       ftp://ftp.tvdr.de/vdr/Developer/vdr-2.1.1.tar.bz2

A 'diff' against the previous version is available at

       ftp://ftp.tvdr.de/vdr/Developer/vdr-2.0.0-2.1.1.diff

MD5 checksums:

b17f9838bb8ddee9620f838fea7a171d  vdr-2.1.1.tar.bz2
8b8ca593885c380cd370e6d19a5b16a1  vdr-2.0.0-2.1.1.diff

WARNING:
========

This is a *developer* version. Even though *I* use it in my productive
environment, I strongly recommend that you only use it under controlled
conditions and for testing and debugging.

The main focus of this version is on adding basic support for positioners
to control steerable satellite dishes. Manually controlling the dish position
and storing individual positions will follow later.

The fixes contained in this version will be released in a stable version 2.0.3
later, if there are no problems.

From the HISTORY file:
- Fixed initializing cDevice::keepTracks.
- Fixed an endless loop in cTextWrapper::Set() in case the given Width is smaller than
  one character (reported by Stefan Braun).
- Removed all "modified since version 1.6" markers from PLUGINS.html.
- Added definitions for older DVB API versions, back until 5.0 (based on a patch from
  Udo Richter).
- Changed cThread::SetIOPriority() from "best effort class" to "idle class" in order to
  improve overall performance when an editing process is running (thanks to Jochen
  Dolze).
- Fixed handling '/' and '~' in recording file names in case DirectoryEncoding is
  used (thanks to Lars Hanisch).
- Changed the sign of the satellite position value in cSource to reflect the standard
  of western values being negative. The new member function cSource::Position() can be
  used to retrieve the orbital position of a satellite.
- Fixed multiple occurrences of the same directory in the recordings list in case there
  are directories that only differ in non-alphanumeric characters (was broken by
  "Fixed selecting the last replayed recording in the Recordings menu in case there
  are folders and plain recordings with names that differ only in non-alphanumeric
  characters" in version 1.7.36).
- Fixed displaying the frame number when setting an editing mark (thanks to Thomas
  Günther).
- Fixed no longer generating any editing marks if the edited recording results in just
  one single sequence (reported by Halim Sahin).
- Fixed an error message when parsing SCR values in diseqc.conf.
- Fixed an unexpected RCS version tag in the newplugin script.
- Fixed an endless loop in the DrawEllipse() functions for very small ellipses (reported
  by Stefan Braun).
- Fixed a crash in the LCARS skin's main menu in case there is no current channel
  (reported by Dominique Dumont).
- Added basic support for positioners to control steerable satellite dishes (based on
  a patch from Seppo Ingalsuo and Ales Jurik).
  + Supports GotoN (aka "DiSEqC 1.2") and GotoX (aka "USALS").
  + The new DiSEqC command code 'P' can be used to instruct a positioner to move the
    dish to the required satellite position. When a 'P' code is processed, further
    execution of the remaining DiSEqC sequence (if any) is postponed until the positioner
    has reached the new satellite position.
  + The new special source value of "S360E" can be used in diseqc.conf to indicate that
    an entry using a positioner can move the dish to any requested position within its
    range. Think of it as "full circle".
  + The devices a particular cDiseqc or cScr applies to are now stored directly in each
    cDiseqc or cScr, respectively.
  + A plugin can implement a custom positioner control (see PLUGINS.html, section "Positioners").
  + The new function cSkinDisplayChannel::SetPositioner() can be implemented by skins to
    show the user a progress display when the dish is being moved. The default implementation
    calls SetMessage() with a string indicating the new position the dish is being moved to.
    The LCARS skin shows a progress bar indicating the movement of the dish.
  + The new parameters "Site latitude", "Site longitude", "Positioner speed", and
    "Positioner swing" in the "Setup/LNB" menu can be used to configure the necessary
    values for a steerable dish.
  + The cDvbTuner now has a new status tsPositioning, in which it waits until a steerable
    dish has reached its target position. Parsing SI data is paused until the target
    position has been reached.
- The LCARS skin now shows the source value of the current channel in its channel display.
- Fixed asserting free disk space in the cutter.
- No longer trying to delete old recordings in AssertFreeDiskSpace() if the given
  Priority is less than 1.
- Fixed handling LIRC events in case repeated events are lost.
- Fixed a possible crash when shutting down VDR while subtitles are being displayed
  (reported by Ville Skyttä).
- cDevice::IsPrimaryDevice() now also checks whether the primary device actually has
  a decoder and returns false otherwise. This should improve device allocation on
  systems that are only used as a receiver and don't actually display anything.
- Increased the value of MAXRETRIES to 20 to reduce the probability of disturbances
  in transfer mode.
- All bonded devices (except for the master) now turn off their LNB power completely
  to avoid problems when receiving vertically polarized transponders (suggested by
  Manfred Völkel and Oliver Endriss).
- Reverted the change from version 1.5.7 that made all logging go to LOG_ERR (thanks
  to Christopher Reimer).
- Added Begin/EndSegmentTransfer() to the EPG handler interface (thanks to Jörg Wendel).
- The code for distributing recordings over several video directories is now
  deprecated and disabled by default.
  You can re-enable this feature by removing the comment sign ('//') from the beginning
  of the line
  //#define DEPRECATED_DISTRIBUTED_VIDEODIR // Code enclosed with this macro is ...
  in the file videodir.c. Note, though, that this can only be a temporary workaround.
  This feature will be completely removed in one of the next developer versions.
  Distributing the video directory over several disks was a useful feature in times
  when disks were still relatively small, but it also caused serious problems in case
  one of the disks failed. Nowadays hard disks come in sizes measured in terabytes,
  and tools like "mhddfs" can be used to combine several disks to form one large volume.
  A recommended method for a relatively safe disk setup in a VDR system is to use two
  1TB (or larger) disks and use them as a RAID-1 (mirrored). That way, if one disk
  fails, you can replace it without data loss.
2013-08-25 18:40:45 +02:00

2142 lines
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/*
* osd.c: Abstract On Screen Display layer
*
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: osd.c 3.1 2013/05/18 12:33:16 kls Exp $
*/
#include "osd.h"
#include <math.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <sys/unistd.h>
#include "device.h"
#include "tools.h"
tColor HsvToColor(double H, double S, double V)
{
if (S > 0) {
H /= 60;
int i = floor(H);
double f = H - i;
double p = V * (1 - S);
double q = V * (1 - S * f);
double t = V * (1 - S * (1 - f));
switch (i) {
case 0: return RgbToColor(V, t, p);
case 1: return RgbToColor(q, V, p);
case 2: return RgbToColor(p, V, t);
case 3: return RgbToColor(p, q, V);
case 4: return RgbToColor(t, p, V);
default: return RgbToColor(V, p, q);
}
}
else { // greyscale
uint8_t n = V * 0xFF;
return RgbToColor(n, n, n);
}
}
tColor RgbShade(tColor Color, double Factor)
{
double f = fabs(constrain(Factor, -1.0, 1.0));
double w = Factor > 0 ? f * 0xFF : 0;
return (Color & 0xFF000000) |
(min(0xFF, int((1 - f) * ((Color >> 16) & 0xFF) + w + 0.5)) << 16) |
(min(0xFF, int((1 - f) * ((Color >> 8) & 0xFF) + w + 0.5)) << 8) |
(min(0xFF, int((1 - f) * ( Color & 0xFF) + w + 0.5)) );
}
#define USE_ALPHA_LUT
#ifdef USE_ALPHA_LUT
// Alpha blending with lookup table (by Reinhard Nissl <rnissl@gmx.de>)
// A little slower (138 %) on fast machines than the implementation below and faster
// on slow machines (79 %), but requires some 318KB of RAM for the lookup table.
static uint16_t AlphaLutFactors[255][256][2];
static uint8_t AlphaLutAlpha[255][256];
class cInitAlphaLut {
public:
cInitAlphaLut(void)
{
for (int alphaA = 0; alphaA < 255; alphaA++) {
int range = (alphaA == 255 ? 255 : 254);
for (int alphaB = 0; alphaB < 256; alphaB++) {
int alphaO_x_range = 255 * alphaA + alphaB * (range - alphaA);
if (!alphaO_x_range)
alphaO_x_range++;
int factorA = (256 * 255 * alphaA + alphaO_x_range / 2) / alphaO_x_range;
int factorB = (256 * alphaB * (range - alphaA) + alphaO_x_range / 2) / alphaO_x_range;
AlphaLutFactors[alphaA][alphaB][0] = factorA;
AlphaLutFactors[alphaA][alphaB][1] = factorB;
AlphaLutAlpha[alphaA][alphaB] = alphaO_x_range / range;
}
}
}
} InitAlphaLut;
tColor AlphaBlend(tColor ColorFg, tColor ColorBg, uint8_t AlphaLayer)
{
tColor Alpha = (ColorFg & 0xFF000000) >> 24;
Alpha *= AlphaLayer;
Alpha >>= 8;
uint16_t *lut = &AlphaLutFactors[Alpha][(ColorBg & 0xFF000000) >> 24][0];
return (tColor)((AlphaLutAlpha[Alpha][(ColorBg & 0xFF000000) >> 24] << 24)
| (((((ColorFg & 0x00FF00FF) * lut[0] + (ColorBg & 0x00FF00FF) * lut[1])) & 0xFF00FF00)
| ((((ColorFg & 0x0000FF00) * lut[0] + (ColorBg & 0x0000FF00) * lut[1])) & 0x00FF0000)) >> 8);
}
#else
// Alpha blending without lookup table.
// Also works fast, but doesn't return the theoretically correct result.
// It's "good enough", though.
static tColor Multiply(tColor Color, uint8_t Alpha)
{
tColor RB = (Color & 0x00FF00FF) * Alpha;
RB = ((RB + ((RB >> 8) & 0x00FF00FF) + 0x00800080) >> 8) & 0x00FF00FF;
tColor AG = ((Color >> 8) & 0x00FF00FF) * Alpha;
AG = ((AG + ((AG >> 8) & 0x00FF00FF) + 0x00800080)) & 0xFF00FF00;
return AG | RB;
}
tColor AlphaBlend(tColor ColorFg, tColor ColorBg, uint8_t AlphaLayer)
{
tColor Alpha = (ColorFg & 0xFF000000) >> 24;
if (AlphaLayer < ALPHA_OPAQUE) {
Alpha *= AlphaLayer;
Alpha = ((Alpha + ((Alpha >> 8) & 0x000000FF) + 0x00000080) >> 8) & 0x000000FF;
}
return Multiply(ColorFg, Alpha) + Multiply(ColorBg, 255 - Alpha);
}
#endif
// --- cPalette --------------------------------------------------------------
cPalette::cPalette(int Bpp)
{
SetBpp(Bpp);
SetAntiAliasGranularity(10, 10);
}
cPalette::~cPalette()
{
}
void cPalette::SetAntiAliasGranularity(uint FixedColors, uint BlendColors)
{
if (FixedColors >= MAXNUMCOLORS || BlendColors == 0)
antiAliasGranularity = MAXNUMCOLORS - 1;
else {
int ColorsForBlending = MAXNUMCOLORS - FixedColors;
int ColorsPerBlend = ColorsForBlending / BlendColors + 2; // +2 = the full foreground and background colors, which are among the fixed colors
antiAliasGranularity = double(MAXNUMCOLORS - 1) / (ColorsPerBlend - 1);
}
}
void cPalette::Reset(void)
{
numColors = 0;
modified = false;
}
int cPalette::Index(tColor Color)
{
// Check if color is already defined:
for (int i = 0; i < numColors; i++) {
if (color[i] == Color)
return i;
}
// No exact color, try a close one:
int i = ClosestColor(Color, 4);
if (i >= 0)
return i;
// No close one, try to define a new one:
if (numColors < maxColors) {
color[numColors++] = Color;
modified = true;
return numColors - 1;
}
// Out of colors, so any close color must do:
return ClosestColor(Color);
}
void cPalette::SetBpp(int Bpp)
{
bpp = Bpp;
maxColors = 1 << bpp;
Reset();
}
void cPalette::SetColor(int Index, tColor Color)
{
if (Index < maxColors) {
if (numColors <= Index) {
numColors = Index + 1;
modified = true;
}
else
modified |= color[Index] != Color;
color[Index] = Color;
}
}
const tColor *cPalette::Colors(int &NumColors) const
{
NumColors = numColors;
return numColors ? color : NULL;
}
void cPalette::Take(const cPalette &Palette, tIndexes *Indexes, tColor ColorFg, tColor ColorBg)
{
for (int i = 0; i < Palette.numColors; i++) {
tColor Color = Palette.color[i];
if (ColorFg || ColorBg) {
switch (i) {
case 0: Color = ColorBg; break;
case 1: Color = ColorFg; break;
default: ;
}
}
int n = Index(Color);
if (Indexes)
(*Indexes)[i] = n;
}
}
void cPalette::Replace(const cPalette &Palette)
{
for (int i = 0; i < Palette.numColors; i++)
SetColor(i, Palette.color[i]);
numColors = Palette.numColors;
antiAliasGranularity = Palette.antiAliasGranularity;
}
tColor cPalette::Blend(tColor ColorFg, tColor ColorBg, uint8_t Level) const
{
if (antiAliasGranularity > 0)
Level = uint8_t(int(Level / antiAliasGranularity + 0.5) * antiAliasGranularity);
int Af = (ColorFg & 0xFF000000) >> 24;
int Rf = (ColorFg & 0x00FF0000) >> 16;
int Gf = (ColorFg & 0x0000FF00) >> 8;
int Bf = (ColorFg & 0x000000FF);
int Ab = (ColorBg & 0xFF000000) >> 24;
int Rb = (ColorBg & 0x00FF0000) >> 16;
int Gb = (ColorBg & 0x0000FF00) >> 8;
int Bb = (ColorBg & 0x000000FF);
int A = (Ab + (Af - Ab) * Level / 0xFF) & 0xFF;
int R = (Rb + (Rf - Rb) * Level / 0xFF) & 0xFF;
int G = (Gb + (Gf - Gb) * Level / 0xFF) & 0xFF;
int B = (Bb + (Bf - Bb) * Level / 0xFF) & 0xFF;
return (A << 24) | (R << 16) | (G << 8) | B;
}
int cPalette::ClosestColor(tColor Color, int MaxDiff) const
{
int n = 0;
int d = INT_MAX;
int A1 = (Color & 0xFF000000) >> 24;
int R1 = (Color & 0x00FF0000) >> 16;
int G1 = (Color & 0x0000FF00) >> 8;
int B1 = (Color & 0x000000FF);
for (int i = 0; i < numColors && d > 0; i++) {
int A2 = (color[i] & 0xFF000000) >> 24;
int R2 = (color[i] & 0x00FF0000) >> 16;
int G2 = (color[i] & 0x0000FF00) >> 8;
int B2 = (color[i] & 0x000000FF);
int diff = 0;
if (A1 || A2) // fully transparent colors are considered equal
diff = (abs(A1 - A2) << 1) + (abs(R1 - R2) << 1) + (abs(G1 - G2) << 1) + (abs(B1 - B2) << 1);
if (diff < d) {
d = diff;
n = i;
}
}
return d <= MaxDiff ? n : -1;
}
// --- cBitmap ---------------------------------------------------------------
cBitmap::cBitmap(int Width, int Height, int Bpp, int X0, int Y0)
:cPalette(Bpp)
{
bitmap = NULL;
x0 = X0;
y0 = Y0;
width = height = 0;
SetSize(Width, Height);
}
cBitmap::cBitmap(const char *FileName)
{
bitmap = NULL;
x0 = 0;
y0 = 0;
width = height = 0;
LoadXpm(FileName);
}
cBitmap::cBitmap(const char *const Xpm[])
{
bitmap = NULL;
x0 = 0;
y0 = 0;
width = height = 0;
SetXpm(Xpm);
}
cBitmap::~cBitmap()
{
free(bitmap);
}
void cBitmap::SetSize(int Width, int Height)
{
if (bitmap && Width == width && Height == height)
return;
width = Width;
height = Height;
free(bitmap);
bitmap = NULL;
dirtyX1 = 0;
dirtyY1 = 0;
dirtyX2 = width - 1;
dirtyY2 = height - 1;
if (width > 0 && height > 0) {
bitmap = MALLOC(tIndex, width * height);
if (bitmap)
memset(bitmap, 0x00, width * height);
else
esyslog("ERROR: can't allocate bitmap!");
}
else
esyslog("ERROR: invalid bitmap parameters (%d, %d)!", width, height);
}
bool cBitmap::Contains(int x, int y) const
{
x -= x0;
y -= y0;
return 0 <= x && x < width && 0 <= y && y < height;
}
bool cBitmap::Covers(int x1, int y1, int x2, int y2) const
{
x1 -= x0;
y1 -= y0;
x2 -= x0;
y2 -= y0;
return x1 <= 0 && y1 <= 0 && x2 >= width - 1 && y2 >= height - 1;
}
bool cBitmap::Intersects(int x1, int y1, int x2, int y2) const
{
x1 -= x0;
y1 -= y0;
x2 -= x0;
y2 -= y0;
return !(x2 < 0 || x1 >= width || y2 < 0 || y1 >= height);
}
bool cBitmap::Dirty(int &x1, int &y1, int &x2, int &y2)
{
if (dirtyX2 >= 0) {
x1 = dirtyX1;
y1 = dirtyY1;
x2 = dirtyX2;
y2 = dirtyY2;
return true;
}
return false;
}
void cBitmap::Clean(void)
{
dirtyX1 = width;
dirtyY1 = height;
dirtyX2 = -1;
dirtyY2 = -1;
}
bool cBitmap::LoadXpm(const char *FileName)
{
bool Result = false;
FILE *f = fopen(FileName, "r");
if (f) {
char **Xpm = NULL;
bool isXpm = false;
int lines = 0;
int index = 0;
char *s;
cReadLine ReadLine;
while ((s = ReadLine.Read(f)) != NULL) {
s = skipspace(s);
if (!isXpm) {
if (strcmp(s, "/* XPM */") != 0) {
esyslog("ERROR: invalid header in XPM file '%s'", FileName);
break;
}
isXpm = true;
}
else if (*s++ == '"') {
if (!lines) {
int w, h, n, c;
if (4 != sscanf(s, "%d %d %d %d", &w, &h, &n, &c)) {
esyslog("ERROR: faulty 'values' line in XPM file '%s'", FileName);
isXpm = false;
break;
}
lines = h + n + 1;
Xpm = MALLOC(char *, lines);
memset(Xpm, 0, lines * sizeof(char*));
}
char *q = strchr(s, '"');
if (!q) {
esyslog("ERROR: missing quotes in XPM file '%s'", FileName);
isXpm = false;
break;
}
*q = 0;
if (index < lines)
Xpm[index++] = strdup(s);
else {
esyslog("ERROR: too many lines in XPM file '%s'", FileName);
isXpm = false;
break;
}
}
}
if (isXpm) {
if (index == lines)
Result = SetXpm(Xpm);
else
esyslog("ERROR: too few lines in XPM file '%s'", FileName);
}
if (Xpm) {
for (int i = 0; i < index; i++)
free(Xpm[i]);
}
free(Xpm);
fclose(f);
}
else
esyslog("ERROR: can't open XPM file '%s'", FileName);
return Result;
}
bool cBitmap::SetXpm(const char *const Xpm[], bool IgnoreNone)
{
if (!Xpm)
return false;
const char *const *p = Xpm;
int w, h, n, c;
if (4 != sscanf(*p, "%d %d %d %d", &w, &h, &n, &c)) {
esyslog("ERROR: faulty 'values' line in XPM: '%s'", *p);
return false;
}
if (n > MAXNUMCOLORS) {
esyslog("ERROR: too many colors in XPM: %d", n);
return false;
}
int b = 0;
while (1 << (1 << b) < (IgnoreNone ? n - 1 : n))
b++;
SetBpp(1 << b);
SetSize(w, h);
int NoneColorIndex = MAXNUMCOLORS;
for (int i = 0; i < n; i++) {
const char *s = *++p;
if (int(strlen(s)) < c) {
esyslog("ERROR: faulty 'colors' line in XPM: '%s'", s);
return false;
}
s = skipspace(s + c);
if (*s != 'c') {
esyslog("ERROR: unknown color key in XPM: '%c'", *s);
return false;
}
s = skipspace(s + 1);
if (strcasecmp(s, "none") == 0) {
NoneColorIndex = i;
if (!IgnoreNone)
SetColor(i, clrTransparent);
continue;
}
if (*s != '#') {
esyslog("ERROR: unknown color code in XPM: '%c'", *s);
return false;
}
tColor color = strtoul(++s, NULL, 16) | 0xFF000000;
SetColor((IgnoreNone && i > NoneColorIndex) ? i - 1 : i, color);
}
for (int y = 0; y < h; y++) {
const char *s = *++p;
if (int(strlen(s)) != w * c) {
esyslog("ERROR: faulty pixel line in XPM: %d '%s'", y, s);
return false;
}
for (int x = 0; x < w; x++) {
for (int i = 0; i <= n; i++) {
if (i == n) {
esyslog("ERROR: undefined pixel color in XPM: %d %d '%s'", x, y, s);
return false;
}
if (strncmp(Xpm[i + 1], s, c) == 0) {
if (i == NoneColorIndex)
NoneColorIndex = MAXNUMCOLORS;
SetIndex(x, y, (IgnoreNone && i > NoneColorIndex) ? i - 1 : i);
break;
}
}
s += c;
}
}
if (NoneColorIndex < MAXNUMCOLORS && !IgnoreNone)
return SetXpm(Xpm, true);
return true;
}
void cBitmap::SetIndex(int x, int y, tIndex Index)
{
if (bitmap) {
if (0 <= x && x < width && 0 <= y && y < height) {
if (bitmap[width * y + x] != Index) {
bitmap[width * y + x] = Index;
if (dirtyX1 > x) dirtyX1 = x;
if (dirtyY1 > y) dirtyY1 = y;
if (dirtyX2 < x) dirtyX2 = x;
if (dirtyY2 < y) dirtyY2 = y;
}
}
}
}
void cBitmap::DrawPixel(int x, int y, tColor Color)
{
x -= x0;
y -= y0;
SetIndex(x, y, Index(Color));
}
void cBitmap::DrawBitmap(int x, int y, const cBitmap &Bitmap, tColor ColorFg, tColor ColorBg, bool ReplacePalette, bool Overlay)
{
if (bitmap && Bitmap.bitmap && Intersects(x, y, x + Bitmap.Width() - 1, y + Bitmap.Height() - 1)) {
if (Covers(x, y, x + Bitmap.Width() - 1, y + Bitmap.Height() - 1))
Reset();
x -= x0;
y -= y0;
if (ReplacePalette && Covers(x + x0, y + y0, x + x0 + Bitmap.Width() - 1, y + y0 + Bitmap.Height() - 1)) {
Replace(Bitmap);
for (int ix = 0; ix < Bitmap.width; ix++) {
for (int iy = 0; iy < Bitmap.height; iy++) {
if (!Overlay || Bitmap.bitmap[Bitmap.width * iy + ix] != 0)
SetIndex(x + ix, y + iy, Bitmap.bitmap[Bitmap.width * iy + ix]);
}
}
}
else {
tIndexes Indexes;
Take(Bitmap, &Indexes, ColorFg, ColorBg);
for (int ix = 0; ix < Bitmap.width; ix++) {
for (int iy = 0; iy < Bitmap.height; iy++) {
if (!Overlay || Bitmap.bitmap[Bitmap.width * iy + ix] != 0)
SetIndex(x + ix, y + iy, Indexes[int(Bitmap.bitmap[Bitmap.width * iy + ix])]);
}
}
}
}
}
void cBitmap::DrawText(int x, int y, const char *s, tColor ColorFg, tColor ColorBg, const cFont *Font, int Width, int Height, int Alignment)
{
if (bitmap) {
int w = Font->Width(s);
int h = Font->Height();
int limit = 0;
int cw = Width ? Width : w;
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);
if (Width || Height) {
limit = x + cw - x0;
if (Width) {
if ((Alignment & taLeft) != 0) {
if ((Alignment & taBorder) != 0)
x += max(h / TEXT_ALIGN_BORDER, 1);
}
else if ((Alignment & taRight) != 0) {
if (w < Width)
x += Width - w;
if ((Alignment & taBorder) != 0)
x -= max(h / TEXT_ALIGN_BORDER, 1);
}
else { // taCentered
if (w < Width)
x += (Width - w) / 2;
}
}
if (Height) {
if ((Alignment & taTop) != 0)
;
else if ((Alignment & taBottom) != 0) {
if (h < Height)
y += Height - h;
}
else { // taCentered
if (h < Height)
y += (Height - h) / 2;
}
}
}
x -= x0;
y -= y0;
Font->DrawText(this, x, y, s, ColorFg, ColorBg, limit);
}
}
void cBitmap::DrawRectangle(int x1, int y1, int x2, int y2, tColor Color)
{
if (bitmap && Intersects(x1, y1, x2, y2)) {
if (Covers(x1, y1, x2, y2))
Reset();
x1 -= x0;
y1 -= y0;
x2 -= x0;
y2 -= y0;
x1 = max(x1, 0);
y1 = max(y1, 0);
x2 = min(x2, width - 1);
y2 = min(y2, height - 1);
tIndex c = Index(Color);
for (int y = y1; y <= y2; y++) {
for (int x = x1; x <= x2; x++)
SetIndex(x, y, c);
}
}
}
void cBitmap::DrawEllipse(int x1, int y1, int x2, int y2, tColor Color, int Quadrants)
{
if (!Intersects(x1, y1, x2, y2))
return;
// Algorithm based on http://homepage.smc.edu/kennedy_john/BELIPSE.PDF
int rx = x2 - x1;
int ry = y2 - y1;
int cx = (x1 + x2) / 2;
int cy = (y1 + y2) / 2;
switch (abs(Quadrants)) {
case 0: rx /= 2; ry /= 2; break;
case 1: cx = x1; cy = y2; break;
case 2: cx = x2; cy = y2; break;
case 3: cx = x2; cy = y1; break;
case 4: cx = x1; cy = y1; break;
case 5: cx = x1; ry /= 2; break;
case 6: cy = y2; rx /= 2; break;
case 7: cx = x2; ry /= 2; break;
case 8: cy = y1; rx /= 2; break;
default: ;
}
int TwoASquare = max(1, 2 * rx * rx);
int TwoBSquare = max(1, 2 * ry * ry);
int x = rx;
int y = 0;
int XChange = ry * ry * (1 - 2 * rx);
int YChange = rx * rx;
int EllipseError = 0;
int StoppingX = TwoBSquare * rx;
int StoppingY = 0;
while (StoppingX >= StoppingY) {
switch (Quadrants) {
case 5: DrawRectangle(cx, cy + y, cx + x, cy + y, Color); // no break
case 1: DrawRectangle(cx, cy - y, cx + x, cy - y, Color); break;
case 7: DrawRectangle(cx - x, cy + y, cx, cy + y, Color); // no break
case 2: DrawRectangle(cx - x, cy - y, cx, cy - y, Color); break;
case 3: DrawRectangle(cx - x, cy + y, cx, cy + y, Color); break;
case 4: DrawRectangle(cx, cy + y, cx + x, cy + y, Color); break;
case 0:
case 6: DrawRectangle(cx - x, cy - y, cx + x, cy - y, Color); if (Quadrants == 6) break;
case 8: DrawRectangle(cx - x, cy + y, cx + x, cy + y, Color); break;
case -1: DrawRectangle(cx + x, cy - y, x2, cy - y, Color); break;
case -2: DrawRectangle(x1, cy - y, cx - x, cy - y, Color); break;
case -3: DrawRectangle(x1, cy + y, cx - x, cy + y, Color); break;
case -4: DrawRectangle(cx + x, cy + y, x2, cy + y, Color); break;
default: ;
}
y++;
StoppingY += TwoASquare;
EllipseError += YChange;
YChange += TwoASquare;
if (2 * EllipseError + XChange > 0) {
x--;
StoppingX -= TwoBSquare;
EllipseError += XChange;
XChange += TwoBSquare;
}
}
x = 0;
y = ry;
XChange = ry * ry;
YChange = rx * rx * (1 - 2 * ry);
EllipseError = 0;
StoppingX = 0;
StoppingY = TwoASquare * ry;
while (StoppingX <= StoppingY) {
switch (Quadrants) {
case 5: DrawRectangle(cx, cy + y, cx + x, cy + y, Color); // no break
case 1: DrawRectangle(cx, cy - y, cx + x, cy - y, Color); break;
case 7: DrawRectangle(cx - x, cy + y, cx, cy + y, Color); // no break
case 2: DrawRectangle(cx - x, cy - y, cx, cy - y, Color); break;
case 3: DrawRectangle(cx - x, cy + y, cx, cy + y, Color); break;
case 4: DrawRectangle(cx, cy + y, cx + x, cy + y, Color); break;
case 0:
case 6: DrawRectangle(cx - x, cy - y, cx + x, cy - y, Color); if (Quadrants == 6) break;
case 8: DrawRectangle(cx - x, cy + y, cx + x, cy + y, Color); break;
case -1: DrawRectangle(cx + x, cy - y, x2, cy - y, Color); break;
case -2: DrawRectangle(x1, cy - y, cx - x, cy - y, Color); break;
case -3: DrawRectangle(x1, cy + y, cx - x, cy + y, Color); break;
case -4: DrawRectangle(cx + x, cy + y, x2, cy + y, Color); break;
default: ;
}
x++;
StoppingX += TwoBSquare;
EllipseError += XChange;
XChange += TwoBSquare;
if (2 * EllipseError + YChange > 0) {
y--;
StoppingY -= TwoASquare;
EllipseError += YChange;
YChange += TwoASquare;
}
}
}
void cBitmap::DrawSlope(int x1, int y1, int x2, int y2, tColor Color, int Type)
{
if (!Intersects(x1, y1, x2, y2))
return;
bool upper = Type & 0x01;
bool falling = Type & 0x02;
bool vertical = Type & 0x04;
if (vertical) {
for (int y = y1; y <= y2; y++) {
double c = cos((y - y1) * M_PI / (y2 - y1 + 1));
if (falling)
c = -c;
int x = int((x2 - x1 + 1) * c / 2);
if (upper && !falling || !upper && falling)
DrawRectangle(x1, y, (x1 + x2) / 2 + x, y, Color);
else
DrawRectangle((x1 + x2) / 2 + x, y, x2, y, Color);
}
}
else {
for (int x = x1; x <= x2; x++) {
double c = cos((x - x1) * M_PI / (x2 - x1 + 1));
if (falling)
c = -c;
int y = int((y2 - y1 + 1) * c / 2);
if (upper)
DrawRectangle(x, y1, x, (y1 + y2) / 2 + y, Color);
else
DrawRectangle(x, (y1 + y2) / 2 + y, x, y2, Color);
}
}
}
const tIndex *cBitmap::Data(int x, int y) const
{
return &bitmap[y * width + x];
}
void cBitmap::ReduceBpp(const cPalette &Palette)
{
int NewBpp = Palette.Bpp();
if (Bpp() == 4 && NewBpp == 2) {
for (int i = width * height; i--; ) {
tIndex p = bitmap[i];
bitmap[i] = (p >> 2) | ((p & 0x03) != 0);
}
}
else if (Bpp() == 8) {
if (NewBpp == 2) {
for (int i = width * height; i--; ) {
tIndex p = bitmap[i];
bitmap[i] = (p >> 6) | ((p & 0x30) != 0);
}
}
else if (NewBpp == 4) {
for (int i = width * height; i--; ) {
tIndex p = bitmap[i];
bitmap[i] = p >> 4;
}
}
else
return;
}
else
return;
SetBpp(NewBpp);
Replace(Palette);
}
void cBitmap::ShrinkBpp(int NewBpp)
{
int NumOldColors;
const tColor *Colors = this->Colors(NumOldColors);
if (Colors) {
// Find the most frequently used colors and create a map table:
int Used[MAXNUMCOLORS] = { 0 };
int Map[MAXNUMCOLORS] = { 0 };
for (int i = width * height; i--; )
Used[bitmap[i]]++;
int MaxNewColors = (NewBpp == 4) ? 16 : 4;
cPalette NewPalette(NewBpp);
for (int i = 0; i < MaxNewColors; i++) {
int Max = 0;
int Index = -1;
for (int n = 0; n < NumOldColors; n++) {
if (Used[n] > Max) {
Max = Used[n];
Index = n;
}
}
if (Index >= 0) {
Used[Index] = 0;
Map[Index] = i;
NewPalette.SetColor(i, Colors[Index]);
}
else
break;
}
// Complete the map table for all other colors (will be set to closest match):
for (int n = 0; n < NumOldColors; n++) {
if (Used[n])
Map[n] = NewPalette.Index(Colors[n]);
}
// Do the actual index mapping:
for (int i = width * height; i--; )
bitmap[i] = Map[bitmap[i]];
SetBpp(NewBpp);
Replace(NewPalette);
}
}
cBitmap *cBitmap::Scaled(double FactorX, double FactorY, bool AntiAlias)
{
// Fixed point scaling code based on www.inversereality.org/files/bitmapscaling.pdf
// by deltener@mindtremors.com
cBitmap *b = new cBitmap(int(round(Width() * FactorX)), int(round(Height() * FactorY)), Bpp(), X0(), Y0());
int RatioX = (Width() << 16) / b->Width();
int RatioY = (Height() << 16) / b->Height();
if (!AntiAlias || FactorX <= 1.0 && FactorY <= 1.0) {
// Downscaling - no anti-aliasing:
b->Replace(*this); // copy palette
tIndex *DestRow = b->bitmap;
int SourceY = 0;
for (int y = 0; y < b->Height(); y++) {
int SourceX = 0;
tIndex *SourceRow = bitmap + (SourceY >> 16) * Width();
tIndex *Dest = DestRow;
for (int x = 0; x < b->Width(); x++) {
*Dest++ = SourceRow[SourceX >> 16];
SourceX += RatioX;
}
SourceY += RatioY;
DestRow += b->Width();
}
}
else {
// Upscaling - anti-aliasing:
b->SetBpp(8);
b->Replace(*this); // copy palette (must be done *after* SetBpp()!)
int SourceY = 0;
for (int y = 0; y < b->Height(); y++) {
int SourceX = 0;
int sy = min(SourceY >> 16, Height() - 2);
uint8_t BlendY = 0xFF - ((SourceY >> 8) & 0xFF);
for (int x = 0; x < b->Width(); x++) {
int sx = min(SourceX >> 16, Width() - 2);
uint8_t BlendX = 0xFF - ((SourceX >> 8) & 0xFF);
tColor c1 = b->Blend(GetColor(sx, sy), GetColor(sx + 1, sy), BlendX);
tColor c2 = b->Blend(GetColor(sx, sy + 1), GetColor(sx + 1, sy + 1), BlendX);
tColor c3 = b->Blend(c1, c2, BlendY);
b->DrawPixel(x + X0(), y + Y0(), c3);
SourceX += RatioX;
}
SourceY += RatioY;
}
}
return b;
}
// --- cRect -----------------------------------------------------------------
const cRect cRect::Null;
void cRect::Grow(int Dx, int Dy)
{
point.Shift(-Dx, -Dy);
size.Grow(Dx, Dy);
}
bool cRect::Contains(const cPoint &Point) const
{
return Left() <= Point.X() &&
Top() <= Point.Y() &&
Right() >= Point.X() &&
Bottom() >= Point.Y();
}
bool cRect::Contains(const cRect &Rect) const
{
return Left() <= Rect.Left() &&
Top() <= Rect.Top() &&
Right() >= Rect.Right() &&
Bottom() >= Rect.Bottom();
}
bool cRect::Intersects(const cRect &Rect) const
{
return !(Left() > Rect.Right() ||
Top() > Rect.Bottom() ||
Right() < Rect.Left() ||
Bottom() < Rect.Top());
}
cRect cRect::Intersected(const cRect &Rect) const
{
cRect r;
if (!IsEmpty() && !Rect.IsEmpty()) {
r.SetLeft(max(Left(), Rect.Left()));
r.SetTop(max(Top(), Rect.Top()));
r.SetRight(min(Right(), Rect.Right()));
r.SetBottom(min(Bottom(), Rect.Bottom()));
}
return r;
}
void cRect::Combine(const cRect &Rect)
{
if (IsEmpty())
*this = Rect;
if (Rect.IsEmpty())
return;
// must set right/bottom *before* top/left!
SetRight(max(Right(), Rect.Right()));
SetBottom(max(Bottom(), Rect.Bottom()));
SetLeft(min(Left(), Rect.Left()));
SetTop(min(Top(), Rect.Top()));
}
void cRect::Combine(const cPoint &Point)
{
if (IsEmpty())
Set(Point.X(), Point.Y(), 1, 1);
// must set right/bottom *before* top/left!
SetRight(max(Right(), Point.X()));
SetBottom(max(Bottom(), Point.Y()));
SetLeft(min(Left(), Point.X()));
SetTop(min(Top(), Point.Y()));
}
// --- cPixmap ---------------------------------------------------------------
cMutex cPixmap::mutex;
cPixmap::cPixmap(void)
{
layer = -1;
alpha = ALPHA_OPAQUE;
tile = false;
}
cPixmap::cPixmap(int Layer, const cRect &ViewPort, const cRect &DrawPort)
{
layer = Layer;
if (layer >= MAXPIXMAPLAYERS) {
layer = MAXPIXMAPLAYERS - 1;
esyslog("ERROR: pixmap layer %d limited to %d", Layer, layer);
}
viewPort = ViewPort;
if (!DrawPort.IsEmpty())
drawPort = DrawPort;
else {
drawPort = viewPort;
drawPort.SetPoint(0, 0);
}
alpha = ALPHA_OPAQUE;
tile = false;
}
void cPixmap::MarkViewPortDirty(const cRect &Rect)
{
dirtyViewPort.Combine(Rect.Intersected(viewPort));
}
void cPixmap::MarkViewPortDirty(const cPoint &Point)
{
if (viewPort.Contains(Point))
dirtyViewPort.Combine(Point);
}
void cPixmap::MarkDrawPortDirty(const cRect &Rect)
{
dirtyDrawPort.Combine(Rect.Intersected(drawPort));
if (tile)
MarkViewPortDirty(viewPort);
else
MarkViewPortDirty(Rect.Shifted(viewPort.Point()));
}
void cPixmap::MarkDrawPortDirty(const cPoint &Point)
{
if (drawPort.Contains(Point)) {
dirtyDrawPort.Combine(Point);
if (tile)
MarkViewPortDirty(viewPort);
else
MarkViewPortDirty(Point.Shifted(viewPort.Point()));
}
}
void cPixmap::SetClean(void)
{
dirtyViewPort = dirtyDrawPort = cRect();
}
void cPixmap::SetLayer(int Layer)
{
Lock();
if (Layer >= MAXPIXMAPLAYERS) {
esyslog("ERROR: pixmap layer %d limited to %d", Layer, MAXPIXMAPLAYERS - 1);
Layer = MAXPIXMAPLAYERS - 1;
}
if (Layer != layer) {
if (Layer > 0 || layer > 0)
MarkViewPortDirty(viewPort);
layer = Layer;
}
Unlock();
}
void cPixmap::SetAlpha(int Alpha)
{
Lock();
Alpha = constrain(Alpha, ALPHA_TRANSPARENT, ALPHA_OPAQUE);
if (Alpha != alpha) {
MarkViewPortDirty(viewPort);
alpha = Alpha;
}
Unlock();
}
void cPixmap::SetTile(bool Tile)
{
Lock();
if (Tile != tile) {
if (drawPort.Point() != cPoint(0, 0) || drawPort.Width() < viewPort.Width() || drawPort.Height() < viewPort.Height())
MarkViewPortDirty(viewPort);
tile = Tile;
}
Unlock();
}
void cPixmap::SetViewPort(const cRect &Rect)
{
Lock();
if (Rect != viewPort) {
if (tile)
MarkViewPortDirty(viewPort);
else
MarkViewPortDirty(drawPort.Shifted(viewPort.Point()));
viewPort = Rect;
if (tile)
MarkViewPortDirty(viewPort);
else
MarkViewPortDirty(drawPort.Shifted(viewPort.Point()));
}
Unlock();
}
void cPixmap::SetDrawPortPoint(const cPoint &Point, bool Dirty)
{
Lock();
if (Point != drawPort.Point()) {
if (Dirty) {
if (tile)
MarkViewPortDirty(viewPort);
else
MarkViewPortDirty(drawPort.Shifted(viewPort.Point()));
}
drawPort.SetPoint(Point);
if (Dirty && !tile)
MarkViewPortDirty(drawPort.Shifted(viewPort.Point()));
}
Unlock();
}
// --- cImage ----------------------------------------------------------------
cImage::cImage(void)
{
data = NULL;
}
cImage::cImage(const cImage &Image)
{
size = Image.Size();
int l = size.Width() * size.Height() * sizeof(tColor);
data = MALLOC(tColor, l);
memcpy(data, Image.Data(), l);
}
cImage::cImage(const cSize &Size, const tColor *Data)
{
size = Size;
int l = size.Width() * size.Height() * sizeof(tColor);
data = MALLOC(tColor, l);
if (Data)
memcpy(data, Data, l);
}
cImage::~cImage()
{
free(data);
}
void cImage::Clear(void)
{
memset(data, 0x00, Width() * Height() * sizeof(tColor));
}
void cImage::Fill(tColor Color)
{
for (int i = Width() * Height() - 1; i >= 0; i--)
data[i] = Color;
}
// --- cPixmapMemory ---------------------------------------------------------
cPixmapMemory::cPixmapMemory(void)
{
data = NULL;
panning = false;
}
cPixmapMemory::cPixmapMemory(int Layer, const cRect &ViewPort, const cRect &DrawPort)
:cPixmap(Layer, ViewPort, DrawPort)
{
data = MALLOC(tColor, this->DrawPort().Width() * this->DrawPort().Height());
}
cPixmapMemory::~cPixmapMemory()
{
free(data);
}
void cPixmapMemory::Clear(void)
{
Lock();
memset(data, 0x00, DrawPort().Width() * DrawPort().Height() * sizeof(tColor));
MarkDrawPortDirty(DrawPort());
Unlock();
}
void cPixmapMemory::Fill(tColor Color)
{
Lock();
for (int i = DrawPort().Width() * DrawPort().Height() - 1; i >= 0; i--)
data[i] = Color;
MarkDrawPortDirty(DrawPort());
Unlock();
}
void cPixmap::DrawPixmap(const cPixmap *Pixmap, const cRect &Dirty)
{
if (Pixmap->Tile() && (Pixmap->DrawPort().Point() != cPoint(0, 0) || Pixmap->DrawPort().Size() < Pixmap->ViewPort().Size())) {
cPoint t0 = Pixmap->DrawPort().Point().Shifted(Pixmap->ViewPort().Point()); // the origin of the draw port in absolute OSD coordinates
// Find the top/leftmost location where the draw port touches the view port:
while (t0.X() > Pixmap->ViewPort().Left())
t0.Shift(-Pixmap->DrawPort().Width(), 0);
while (t0.Y() > Pixmap->ViewPort().Top())
t0.Shift(0, -Pixmap->DrawPort().Height());
cPoint t = t0;;
while (t.Y() <= Pixmap->ViewPort().Bottom()) {
while (t.X() <= Pixmap->ViewPort().Right()) {
cRect Source = Pixmap->DrawPort(); // assume the entire pixmap needs to be rendered
Source.Shift(Pixmap->ViewPort().Point()); // Source is now in absolute OSD coordinates
cPoint Delta = Source.Point() - t;
Source.SetPoint(t); // Source is now where the pixmap's data shall be drawn
Source = Source.Intersected(Pixmap->ViewPort()); // Source is now limited to the pixmap's view port
Source = Source.Intersected(Dirty); // Source is now limited to the actual dirty rectangle
if (!Source.IsEmpty()) {
cPoint Dest = Source.Point().Shifted(-ViewPort().Point()); // remember the destination point
Source.Shift(Delta); // Source is now back at the pixmap's draw port location, still in absolute OSD coordinates
Source.Shift(-Pixmap->ViewPort().Point()); // Source is now relative to the pixmap's view port again
Source.Shift(-Pixmap->DrawPort().Point()); // Source is now relative to the pixmap's data
if (Pixmap->Layer() == 0)
Copy(Pixmap, Source, Dest); // this is the "background" pixmap
else
Render(Pixmap, Source, Dest); // all others are alpha blended over the background
}
t.Shift(Pixmap->DrawPort().Width(), 0); // increase one draw port width to the right
}
t.SetX(t0.X()); // go back to the leftmost position
t.Shift(0, Pixmap->DrawPort().Height()); // increase one draw port height down
}
}
else {
cRect Source = Pixmap->DrawPort(); // assume the entire pixmap needs to be rendered
Source.Shift(Pixmap->ViewPort().Point()); // Source is now in absolute OSD coordinates
Source = Source.Intersected(Pixmap->ViewPort()); // Source is now limited to the pixmap's view port
Source = Source.Intersected(Dirty); // Source is now limited to the actual dirty rectangle
if (!Source.IsEmpty()) {
cPoint Dest = Source.Point().Shifted(-ViewPort().Point()); // remember the destination point
Source.Shift(-Pixmap->ViewPort().Point()); // Source is now relative to the pixmap's draw port again
Source.Shift(-Pixmap->DrawPort().Point()); // Source is now relative to the pixmap's data
if (Pixmap->Layer() == 0)
Copy(Pixmap, Source, Dest); // this is the "background" pixmap
else
Render(Pixmap, Source, Dest); // all others are alpha blended over the background
}
}
}
void cPixmapMemory::DrawImage(const cPoint &Point, const cImage &Image)
{
Lock();
cRect r = cRect(Point, Image.Size()).Intersected(DrawPort().Size());
if (!r.IsEmpty()) {
int ws = Image.Size().Width();
int wd = DrawPort().Width();
int w = r.Width() * sizeof(tColor);
const tColor *ps = Image.Data();
if (Point.Y() < 0)
ps -= Point.Y() * ws;
if (Point.X() < 0)
ps -= Point.X();
tColor *pd = data + wd * r.Top() + r.Left();
for (int y = r.Height(); y-- > 0; ) {
memcpy(pd, ps, w);
ps += ws;
pd += wd;
}
MarkDrawPortDirty(r);
}
Unlock();
}
void cPixmapMemory::DrawImage(const cPoint &Point, int ImageHandle)
{
Lock();
if (const cImage *Image = cOsdProvider::GetImageData(ImageHandle))
DrawImage(Point, *Image);
Unlock();
}
void cPixmapMemory::DrawPixel(const cPoint &Point, tColor Color)
{
Lock();
if (DrawPort().Size().Contains(Point)) {
int p = Point.Y() * DrawPort().Width() + Point.X();
if (Layer() == 0 && !IS_OPAQUE(Color))
data[p] = AlphaBlend(Color, data[p]);
else
data[p] = Color;
MarkDrawPortDirty(Point);
}
Unlock();
}
void cPixmapMemory::DrawBitmap(const cPoint &Point, const cBitmap &Bitmap, tColor ColorFg, tColor ColorBg, bool Overlay)
{
Lock();
cRect r = cRect(Point, cSize(Bitmap.Width(), Bitmap.Height())).Intersected(DrawPort().Size());
if (!r.IsEmpty()) {
bool UseColors = ColorFg || ColorBg;
int wd = DrawPort().Width();
tColor *pd = data + wd * r.Top() + r.Left();
for (int y = r.Top(); y <= r.Bottom(); y++) {
tColor *cd = pd;
for (int x = r.Left(); x <= r.Right(); x++) {
tIndex Index = *Bitmap.Data(x - Point.X(), y - Point.Y());
if (Index || !Overlay) {
if (UseColors)
*cd = Index ? ColorFg : ColorBg;
else
*cd = Bitmap.Color(Index);
}
cd++;
}
pd += wd;
}
MarkDrawPortDirty(r);
}
Unlock();
}
void cPixmapMemory::DrawText(const cPoint &Point, const char *s, tColor ColorFg, tColor ColorBg, const cFont *Font, int Width, int Height, int Alignment)
{
Lock();
int x = Point.X();
int y = Point.Y();
int w = Font->Width(s);
int h = Font->Height();
int limit = 0;
int cw = Width ? Width : w;
int ch = Height ? Height : h;
cRect r(x, y, cw, ch);
if (ColorBg != clrTransparent)
DrawRectangle(r, ColorBg);
if (Width || Height) {
limit = x + cw;
if (Width) {
if ((Alignment & taLeft) != 0) {
if ((Alignment & taBorder) != 0)
x += max(h / TEXT_ALIGN_BORDER, 1);
}
else if ((Alignment & taRight) != 0) {
if (w < Width)
x += Width - w;
if ((Alignment & taBorder) != 0)
x -= max(h / TEXT_ALIGN_BORDER, 1);
}
else { // taCentered
if (w < Width)
x += (Width - w) / 2;
}
}
if (Height) {
if ((Alignment & taTop) != 0)
;
else if ((Alignment & taBottom) != 0) {
if (h < Height)
y += Height - h;
}
else { // taCentered
if (h < Height)
y += (Height - h) / 2;
}
}
}
Font->DrawText(this, x, y, s, ColorFg, ColorBg, limit);
MarkDrawPortDirty(r);
Unlock();
}
void cPixmapMemory::DrawRectangle(const cRect &Rect, tColor Color)
{
Lock();
cRect r = Rect.Intersected(DrawPort().Size());
if (!r.IsEmpty()) {
int wd = DrawPort().Width();
int w = r.Width() * sizeof(tColor);
tColor *ps = NULL;
tColor *pd = data + wd * r.Top() + r.Left();
for (int y = r.Height(); y-- > 0; ) {
if (ps)
memcpy(pd, ps, w); // all other lines are copied fast from the first one
else {
// explicitly fill the first line:
tColor *cd = ps = pd;
for (int x = r.Width(); x-- > 0; ) {
*cd = Color;
cd++;
}
}
pd += wd;
}
MarkDrawPortDirty(r);
}
Unlock();
}
void cPixmapMemory::DrawEllipse(const cRect &Rect, tColor Color, int Quadrants)
{
//TODO use anti-aliasing?
//TODO fix alignment
Lock();
// Algorithm based on http://homepage.smc.edu/kennedy_john/BELIPSE.PDF
int x1 = Rect.Left();
int y1 = Rect.Top();
int x2 = Rect.Right();
int y2 = Rect.Bottom();
int rx = x2 - x1;
int ry = y2 - y1;
int cx = (x1 + x2) / 2;
int cy = (y1 + y2) / 2;
switch (abs(Quadrants)) {
case 0: rx /= 2; ry /= 2; break;
case 1: cx = x1; cy = y2; break;
case 2: cx = x2; cy = y2; break;
case 3: cx = x2; cy = y1; break;
case 4: cx = x1; cy = y1; break;
case 5: cx = x1; ry /= 2; break;
case 6: cy = y2; rx /= 2; break;
case 7: cx = x2; ry /= 2; break;
case 8: cy = y1; rx /= 2; break;
default: ;
}
int TwoASquare = max(1, 2 * rx * rx);
int TwoBSquare = max(1, 2 * ry * ry);
int x = rx;
int y = 0;
int XChange = ry * ry * (1 - 2 * rx);
int YChange = rx * rx;
int EllipseError = 0;
int StoppingX = TwoBSquare * rx;
int StoppingY = 0;
while (StoppingX >= StoppingY) {
switch (Quadrants) {
case 5: DrawRectangle(cRect(cx, cy + y, x + 1, 1), Color); // no break
case 1: DrawRectangle(cRect(cx, cy - y, x + 1, 1), Color); break;
case 7: DrawRectangle(cRect(cx - x, cy + y, x + 1, 1), Color); // no break
case 2: DrawRectangle(cRect(cx - x, cy - y, x + 1, 1), Color); break;
case 3: DrawRectangle(cRect(cx - x, cy + y, x + 1, 1), Color); break;
case 4: DrawRectangle(cRect(cx, cy + y, x + 1, 1), Color); break;
case 0:
case 6: DrawRectangle(cRect(cx - x, cy - y, 2 * x + 1, 1), Color); if (Quadrants == 6) break;
case 8: DrawRectangle(cRect(cx - x, cy + y, 2 * x + 1, 1), Color); break;
case -1: DrawRectangle(cRect(cx + x, cy - y, rx - x + 1, 1), Color); break;
case -2: DrawRectangle(cRect(x1, cy - y, cx - x - x1 + 1, 1), Color); break;
case -3: DrawRectangle(cRect(x1, cy + y, cx - x - x1 + 1, 1), Color); break;
case -4: DrawRectangle(cRect(cx + x, cy + y, rx - x + 1, 1), Color); break;
default: ;
}
y++;
StoppingY += TwoASquare;
EllipseError += YChange;
YChange += TwoASquare;
if (2 * EllipseError + XChange > 0) {
x--;
StoppingX -= TwoBSquare;
EllipseError += XChange;
XChange += TwoBSquare;
}
}
x = 0;
y = ry;
XChange = ry * ry;
YChange = rx * rx * (1 - 2 * ry);
EllipseError = 0;
StoppingX = 0;
StoppingY = TwoASquare * ry;
while (StoppingX <= StoppingY) {
switch (Quadrants) {
case 5: DrawRectangle(cRect(cx, cy + y, x + 1, 1), Color); // no break
case 1: DrawRectangle(cRect(cx, cy - y, x + 1, 1), Color); break;
case 7: DrawRectangle(cRect(cx - x, cy + y, x + 1, 1), Color); // no break
case 2: DrawRectangle(cRect(cx - x, cy - y, x + 1, 1), Color); break;
case 3: DrawRectangle(cRect(cx - x, cy + y, x + 1, 1), Color); break;
case 4: DrawRectangle(cRect(cx, cy + y, x + 1, 1), Color); break;
case 0:
case 6: DrawRectangle(cRect(cx - x, cy - y, 2 * x + 1, 1), Color); if (Quadrants == 6) break;
case 8: DrawRectangle(cRect(cx - x, cy + y, 2 * x + 1, 1), Color); break;
case -1: DrawRectangle(cRect(cx + x, cy - y, rx - x + 1, 1), Color); break;
case -2: DrawRectangle(cRect(x1, cy - y, cx - x - x1 + 1, 1), Color); break;
case -3: DrawRectangle(cRect(x1, cy + y, cx - x - x1 + 1, 1), Color); break;
case -4: DrawRectangle(cRect(cx + x, cy + y, rx - x + 1, 1), Color); break;
default: ;
}
x++;
StoppingX += TwoBSquare;
EllipseError += XChange;
XChange += TwoBSquare;
if (2 * EllipseError + YChange > 0) {
y--;
StoppingY -= TwoASquare;
EllipseError += YChange;
YChange += TwoASquare;
}
}
MarkDrawPortDirty(Rect);
Unlock();
}
void cPixmapMemory::DrawSlope(const cRect &Rect, tColor Color, int Type)
{
//TODO anti-aliasing?
//TODO also simplify cBitmap::DrawSlope()
Lock();
bool upper = Type & 0x01;
bool falling = Type & 0x02;
bool vertical = Type & 0x04;
int x1 = Rect.Left();
int y1 = Rect.Top();
int x2 = Rect.Right();
int y2 = Rect.Bottom();
int w = Rect.Width();
int h = Rect.Height();
if (vertical) {
for (int y = y1; y <= y2; y++) {
double c = cos((y - y1) * M_PI / h);
if (falling)
c = -c;
int x = (x1 + x2) / 2 + int(w * c / 2);
if (upper && !falling || !upper && falling)
DrawRectangle(cRect(x1, y, x - x1 + 1, 1), Color);
else
DrawRectangle(cRect(x, y, x2 - x + 1, 1), Color);
}
}
else {
for (int x = x1; x <= x2; x++) {
double c = cos((x - x1) * M_PI / w);
if (falling)
c = -c;
int y = (y1 + y2) / 2 + int(h * c / 2);
if (upper)
DrawRectangle(cRect(x, y1, 1, y - y1 + 1), Color);
else
DrawRectangle(cRect(x, y, 1, y2 - y + 1), Color);
}
}
MarkDrawPortDirty(Rect);
Unlock();
}
void cPixmapMemory::Render(const cPixmap *Pixmap, const cRect &Source, const cPoint &Dest)
{
Lock();
if (Pixmap->Alpha() != ALPHA_TRANSPARENT) {
if (const cPixmapMemory *pm = dynamic_cast<const cPixmapMemory *>(Pixmap)) {
cRect s = Source.Intersected(Pixmap->DrawPort().Size());
if (!s.IsEmpty()) {
cPoint v = Dest - Source.Point();
cRect d = s.Shifted(v).Intersected(DrawPort().Size());
if (!d.IsEmpty()) {
s = d.Shifted(-v);
int a = pm->Alpha();
int ws = pm->DrawPort().Width();
int wd = DrawPort().Width();
const tColor *ps = pm->data + ws * s.Top() + s.Left();
tColor *pd = data + wd * d.Top() + d.Left();
for (int y = d.Height(); y-- > 0; ) {
const tColor *cs = ps;
tColor *cd = pd;
for (int x = d.Width(); x-- > 0; ) {
*cd = AlphaBlend(*cs, *cd, a);
cs++;
cd++;
}
ps += ws;
pd += wd;
}
MarkDrawPortDirty(d);
}
}
}
}
Unlock();
}
void cPixmapMemory::Copy(const cPixmap *Pixmap, const cRect &Source, const cPoint &Dest)
{
Lock();
if (const cPixmapMemory *pm = dynamic_cast<const cPixmapMemory *>(Pixmap)) {
cRect s = Source.Intersected(pm->DrawPort().Size());
if (!s.IsEmpty()) {
cPoint v = Dest - Source.Point();
cRect d = s.Shifted(v).Intersected(DrawPort().Size());
if (!d.IsEmpty()) {
s = d.Shifted(-v);
int ws = pm->DrawPort().Width();
int wd = DrawPort().Width();
int w = d.Width() * sizeof(tColor);
const tColor *ps = pm->data + ws * s.Top() + s.Left();
tColor *pd = data + wd * d.Top() + d.Left();
for (int y = d.Height(); y-- > 0; ) {
memcpy(pd, ps, w);
ps += ws;
pd += wd;
}
MarkDrawPortDirty(d);
}
}
}
Unlock();
}
void cPixmapMemory::Scroll(const cPoint &Dest, const cRect &Source)
{
Lock();
cRect s;
if (&Source == &cRect::Null)
s = DrawPort().Shifted(-DrawPort().Point());
else
s = Source.Intersected(DrawPort().Size());
if (!s.IsEmpty()) {
cPoint v = Dest - Source.Point();
cRect d = s.Shifted(v).Intersected(DrawPort().Size());
if (!d.IsEmpty()) {
s = d.Shifted(-v);
if (d.Point() != s.Point()) {
int ws = DrawPort().Width();
int wd = ws;
int w = d.Width() * sizeof(tColor);
const tColor *ps = data + ws * s.Top() + s.Left();
tColor *pd = data + wd * d.Top() + d.Left();
for (int y = d.Height(); y-- > 0; ) {
memmove(pd, ps, w); // source and destination might overlap!
ps += ws;
pd += wd;
}
if (panning)
SetDrawPortPoint(DrawPort().Point().Shifted(s.Point() - d.Point()), false);
else
MarkDrawPortDirty(d);
}
}
}
Unlock();
}
void cPixmapMemory::Pan(const cPoint &Dest, const cRect &Source)
{
Lock();
panning = true;
Scroll(Dest, Source);
panning = false;
Unlock();
}
// --- cOsd ------------------------------------------------------------------
static const char *OsdErrorTexts[] = {
"ok",
"too many areas",
"too many colors",
"bpp not supported",
"areas overlap",
"wrong alignment",
"out of memory",
"wrong area size",
"unknown",
};
int cOsd::osdLeft = 0;
int cOsd::osdTop = 0;
int cOsd::osdWidth = 0;
int cOsd::osdHeight = 0;
cVector<cOsd *> cOsd::Osds;
cMutex cOsd::mutex;
cOsd::cOsd(int Left, int Top, uint Level)
{
cMutexLock MutexLock(&mutex);
isTrueColor = false;
savedBitmap = NULL;
numBitmaps = 0;
savedPixmap = NULL;
left = Left;
top = Top;
width = height = 0;
level = Level;
active = false;
for (int i = 0; i < Osds.Size(); i++) {
if (Osds[i]->level > level) {
Osds.Insert(this, i);
return;
}
}
Osds.Append(this);
}
cOsd::~cOsd()
{
cMutexLock MutexLock(&mutex);
for (int i = 0; i < numBitmaps; i++)
delete bitmaps[i];
delete savedBitmap;
delete savedPixmap;
for (int i = 0; i < pixmaps.Size(); i++)
delete pixmaps[i];
for (int i = 0; i < Osds.Size(); i++) {
if (Osds[i] == this) {
Osds.Remove(i);
if (Osds.Size())
Osds[0]->SetActive(true);
break;
}
}
}
void cOsd::SetOsdPosition(int Left, int Top, int Width, int Height)
{
osdLeft = Left;
osdTop = Top;
osdWidth = constrain(Width, MINOSDWIDTH, MAXOSDWIDTH);
osdHeight = constrain(Height, MINOSDHEIGHT, MAXOSDHEIGHT);
}
void cOsd::SetAntiAliasGranularity(uint FixedColors, uint BlendColors)
{
if (isTrueColor)
return;
for (int i = 0; i < numBitmaps; i++)
bitmaps[i]->SetAntiAliasGranularity(FixedColors, BlendColors);
}
cBitmap *cOsd::GetBitmap(int Area)
{
return Area < numBitmaps ? (isTrueColor ? bitmaps[0] : bitmaps[Area]) : NULL;
}
cPixmap *cOsd::CreatePixmap(int Layer, const cRect &ViewPort, const cRect &DrawPort)
{
if (isTrueColor) {
LOCK_PIXMAPS;
cPixmap *Pixmap = new cPixmapMemory(Layer, ViewPort, DrawPort);
if (AddPixmap(Pixmap))
return Pixmap;
delete Pixmap;
}
return NULL;
}
void cOsd::DestroyPixmap(cPixmap *Pixmap)
{
if (Pixmap) {
LOCK_PIXMAPS;
for (int i = 1; i < pixmaps.Size(); i++) { // begin at 1 - don't let the background pixmap be destroyed!
if (pixmaps[i] == Pixmap) {
pixmaps[0]->MarkViewPortDirty(Pixmap->ViewPort());
delete Pixmap;
pixmaps[i] = NULL;
return;
}
}
esyslog("ERROR: attempt to destroy an unregistered pixmap");
}
}
cPixmap *cOsd::AddPixmap(cPixmap *Pixmap)
{
if (Pixmap) {
LOCK_PIXMAPS;
for (int i = 0; i < pixmaps.Size(); i++) {
if (!pixmaps[i])
return pixmaps[i] = Pixmap;
}
pixmaps.Append(Pixmap);
}
return Pixmap;
}
cPixmapMemory *cOsd::RenderPixmaps(void)
{
cPixmapMemory *Pixmap = NULL;
if (isTrueColor) {
LOCK_PIXMAPS;
// Collect overlapping dirty rectangles:
cRect d;
for (int i = 0; i < pixmaps.Size(); i++) {
if (cPixmap *pm = pixmaps[i]) {
if (!pm->DirtyViewPort().IsEmpty()) {
if (d.IsEmpty() || d.Intersects(pm->DirtyViewPort())) {
d.Combine(pm->DirtyViewPort());
pm->SetClean();
}
}
}
}
if (!d.IsEmpty()) {
//#define DebugDirty
#ifdef DebugDirty
static cRect OldDirty;
cRect NewDirty = d;
d.Combine(OldDirty);
OldDirty = NewDirty;
#endif
Pixmap = new cPixmapMemory(0, d);
Pixmap->Clear();
// Render the individual pixmaps into the resulting pixmap:
for (int Layer = 0; Layer < MAXPIXMAPLAYERS; Layer++) {
for (int i = 0; i < pixmaps.Size(); i++) {
if (cPixmap *pm = pixmaps[i]) {
if (pm->Layer() == Layer)
Pixmap->DrawPixmap(pm, d);
}
}
}
#ifdef DebugDirty
cPixmapMemory DirtyIndicator(7, NewDirty);
static tColor DirtyIndicatorColors[] = { 0x7FFFFF00, 0x7F00FFFF };
static int DirtyIndicatorIndex = 0;
DirtyIndicator.Fill(DirtyIndicatorColors[DirtyIndicatorIndex]);
DirtyIndicatorIndex = 1 - DirtyIndicatorIndex;
Pixmap->Render(&DirtyIndicator, DirtyIndicator.DrawPort(), DirtyIndicator.ViewPort().Point().Shifted(-Pixmap->ViewPort().Point()));
#endif
}
}
return Pixmap;
}
eOsdError cOsd::CanHandleAreas(const tArea *Areas, int NumAreas)
{
if (NumAreas > MAXOSDAREAS)
return oeTooManyAreas;
eOsdError Result = oeOk;
for (int i = 0; i < NumAreas; i++) {
if (Areas[i].x1 > Areas[i].x2 || Areas[i].y1 > Areas[i].y2 || Areas[i].x1 < 0 || Areas[i].y1 < 0)
return oeWrongAlignment;
for (int j = i + 1; j < NumAreas; j++) {
if (Areas[i].Intersects(Areas[j])) {
Result = oeAreasOverlap;
break;
}
}
if (Areas[i].bpp == 32) {
if (NumAreas > 1)
return oeTooManyAreas;
}
}
return Result;
}
eOsdError cOsd::SetAreas(const tArea *Areas, int NumAreas)
{
eOsdError Result = CanHandleAreas(Areas, NumAreas);
if (Result == oeOk) {
while (numBitmaps)
delete bitmaps[--numBitmaps];
for (int i = 0; i < pixmaps.Size(); i++) {
delete pixmaps[i];
pixmaps[i] = NULL;
}
width = height = 0;
isTrueColor = NumAreas == 1 && Areas[0].bpp == 32;
if (isTrueColor) {
width = Areas[0].x2 - Areas[0].x1 + 1;
height = Areas[0].y2 - Areas[0].y1 + 1;
cPixmap *Pixmap = CreatePixmap(0, cRect(Areas[0].x1, Areas[0].y1, width, height));
Pixmap->Clear();
bitmaps[numBitmaps++] = new cBitmap(10, 10, 8); // dummy bitmap for GetBitmap()
}
else {
for (int i = 0; i < NumAreas; i++) {
bitmaps[numBitmaps++] = new cBitmap(Areas[i].Width(), Areas[i].Height(), Areas[i].bpp, Areas[i].x1, Areas[i].y1);
width = max(width, Areas[i].x2 + 1);
height = max(height, Areas[i].y2 + 1);
}
}
}
else
esyslog("ERROR: cOsd::SetAreas returned %d (%s)", Result, Result < oeUnknown ? OsdErrorTexts[Result] : OsdErrorTexts[oeUnknown]);
return Result;
}
void cOsd::SaveRegion(int x1, int y1, int x2, int y2)
{
if (isTrueColor) {
delete savedPixmap;
cRect r(x1, y1, x2 - x1 + 1, y2 - y1 + 1);
savedPixmap = new cPixmapMemory(0, r);
savedPixmap->Copy(pixmaps[0], r, cPoint(0, 0));
}
else {
delete savedBitmap;
savedBitmap = new cBitmap(x2 - x1 + 1, y2 - y1 + 1, 8, x1, y1);
for (int i = 0; i < numBitmaps; i++)
savedBitmap->DrawBitmap(bitmaps[i]->X0(), bitmaps[i]->Y0(), *bitmaps[i]);
}
}
void cOsd::RestoreRegion(void)
{
if (isTrueColor) {
if (savedPixmap) {
pixmaps[0]->Copy(savedPixmap, savedPixmap->DrawPort(), savedPixmap->ViewPort().Point());
delete savedPixmap;
savedPixmap = NULL;
}
}
else {
if (savedBitmap) {
DrawBitmap(savedBitmap->X0(), savedBitmap->Y0(), *savedBitmap);
delete savedBitmap;
savedBitmap = NULL;
}
}
}
eOsdError cOsd::SetPalette(const cPalette &Palette, int Area)
{
if (isTrueColor)
return oeOk;
if (Area < numBitmaps) {
bitmaps[Area]->Take(Palette);
return oeOk;
}
return oeUnknown;
}
void cOsd::DrawImage(const cPoint &Point, const cImage &Image)
{
if (isTrueColor)
pixmaps[0]->DrawImage(Point, Image);
}
void cOsd::DrawImage(const cPoint &Point, int ImageHandle)
{
if (isTrueColor)
pixmaps[0]->DrawImage(Point, ImageHandle);
}
void cOsd::DrawPixel(int x, int y, tColor Color)
{
if (isTrueColor)
pixmaps[0]->DrawPixel(cPoint(x, y), Color);
else {
for (int i = 0; i < numBitmaps; i++)
bitmaps[i]->DrawPixel(x, y, Color);
}
}
void cOsd::DrawBitmap(int x, int y, const cBitmap &Bitmap, tColor ColorFg, tColor ColorBg, bool ReplacePalette, bool Overlay)
{
if (isTrueColor)
pixmaps[0]->DrawBitmap(cPoint(x, y), Bitmap, ColorFg, ColorBg, Overlay);
else {
for (int i = 0; i < numBitmaps; i++)
bitmaps[i]->DrawBitmap(x, y, Bitmap, ColorFg, ColorBg, ReplacePalette, Overlay);
}
}
void cOsd::DrawText(int x, int y, const char *s, tColor ColorFg, tColor ColorBg, const cFont *Font, int Width, int Height, int Alignment)
{
if (isTrueColor)
pixmaps[0]->DrawText(cPoint(x, y), s, ColorFg, ColorBg, Font, Width, Height, Alignment);
else {
for (int i = 0; i < numBitmaps; i++)
bitmaps[i]->DrawText(x, y, s, ColorFg, ColorBg, Font, Width, Height, Alignment);
}
}
void cOsd::DrawRectangle(int x1, int y1, int x2, int y2, tColor Color)
{
if (isTrueColor)
pixmaps[0]->DrawRectangle(cRect(x1, y1, x2 - x1 + 1, y2 - y1 + 1), Color);
else {
for (int i = 0; i < numBitmaps; i++)
bitmaps[i]->DrawRectangle(x1, y1, x2, y2, Color);
}
}
void cOsd::DrawEllipse(int x1, int y1, int x2, int y2, tColor Color, int Quadrants)
{
if (isTrueColor)
pixmaps[0]->DrawEllipse(cRect(x1, y1, x2 - x1 + 1, y2 - y1 + 1), Color, Quadrants);
else {
for (int i = 0; i < numBitmaps; i++)
bitmaps[i]->DrawEllipse(x1, y1, x2, y2, Color, Quadrants);
}
}
void cOsd::DrawSlope(int x1, int y1, int x2, int y2, tColor Color, int Type)
{
if (isTrueColor)
pixmaps[0]->DrawSlope(cRect(x1, y1, x2 - x1 + 1, y2 - y1 + 1), Color, Type);
else {
for (int i = 0; i < numBitmaps; i++)
bitmaps[i]->DrawSlope(x1, y1, x2, y2, Color, Type);
}
}
void cOsd::Flush(void)
{
}
// --- cOsdProvider ----------------------------------------------------------
cOsdProvider *cOsdProvider::osdProvider = NULL;
int cOsdProvider::oldWidth = 0;
int cOsdProvider::oldHeight = 0;
double cOsdProvider::oldAspect = 1.0;
cImage *cOsdProvider::images[MAXOSDIMAGES] = { NULL };
cOsdProvider::cOsdProvider(void)
{
delete osdProvider;
osdProvider = this;
}
cOsdProvider::~cOsdProvider()
{
osdProvider = NULL;
}
cOsd *cOsdProvider::NewOsd(int Left, int Top, uint Level)
{
cMutexLock MutexLock(&cOsd::mutex);
if (Level == OSD_LEVEL_DEFAULT && cOsd::IsOpen())
esyslog("ERROR: attempt to open OSD while it is already open - using dummy OSD!");
else if (osdProvider) {
cOsd *ActiveOsd = cOsd::Osds.Size() ? cOsd::Osds[0] : NULL;
cOsd *Osd = osdProvider->CreateOsd(Left, Top, Level);
if (Osd == cOsd::Osds[0]) {
if (ActiveOsd)
ActiveOsd->SetActive(false);
Osd->SetActive(true);
}
return Osd;
}
else
esyslog("ERROR: no OSD provider available - using dummy OSD!");
return new cOsd(Left, Top, 999); // create a dummy cOsd, so that access won't result in a segfault
}
void cOsdProvider::UpdateOsdSize(bool Force)
{
int Width;
int Height;
double Aspect;
cDevice::PrimaryDevice()->GetOsdSize(Width, Height, Aspect);
if (Width != oldWidth || Height != oldHeight || !DoubleEqual(Aspect, oldAspect) || Force) {
Setup.OSDLeft = int(round(Width * Setup.OSDLeftP));
Setup.OSDTop = int(round(Height * Setup.OSDTopP));
Setup.OSDWidth = int(round(Width * Setup.OSDWidthP)) & ~0x07; // OSD width must be a multiple of 8
Setup.OSDHeight = int(round(Height * Setup.OSDHeightP));
Setup.OSDAspect = Aspect;
Setup.FontOsdSize = int(round(Height * Setup.FontOsdSizeP));
Setup.FontFixSize = int(round(Height * Setup.FontFixSizeP));
Setup.FontSmlSize = int(round(Height * Setup.FontSmlSizeP));
cFont::SetFont(fontOsd, Setup.FontOsd, Setup.FontOsdSize);
cFont::SetFont(fontFix, Setup.FontFix, Setup.FontFixSize);
cFont::SetFont(fontSml, Setup.FontSml, min(Setup.FontSmlSize, Setup.FontOsdSize));
oldWidth = Width;
oldHeight = Height;
oldAspect = Aspect;
dsyslog("OSD size changed to %dx%d @ %g", Width, Height, Aspect);
}
}
bool cOsdProvider::SupportsTrueColor(void)
{
if (osdProvider) {
return osdProvider->ProvidesTrueColor();
}
else
esyslog("ERROR: no OSD provider available in call to SupportsTrueColor()");
return false;
}
int cOsdProvider::StoreImageData(const cImage &Image)
{
LOCK_PIXMAPS;
for (int i = 1; i < MAXOSDIMAGES; i++) {
if (!images[i]) {
images[i] = new cImage(Image);
return i;
}
}
return 0;
}
void cOsdProvider::DropImageData(int ImageHandle)
{
LOCK_PIXMAPS;
if (0 < ImageHandle && ImageHandle < MAXOSDIMAGES) {
delete images[ImageHandle];
images[ImageHandle] = NULL;
}
}
const cImage *cOsdProvider::GetImageData(int ImageHandle)
{
LOCK_PIXMAPS;
if (0 < ImageHandle && ImageHandle < MAXOSDIMAGES)
return images[ImageHandle];
return NULL;
}
int cOsdProvider::StoreImage(const cImage &Image)
{
if (osdProvider)
return osdProvider->StoreImageData(Image);
return 0;
}
void cOsdProvider::DropImage(int ImageHandle)
{
if (osdProvider)
osdProvider->DropImageData(ImageHandle);
}
void cOsdProvider::Shutdown(void)
{
delete osdProvider;
osdProvider = NULL;
}
// --- cTextScroller ---------------------------------------------------------
cTextScroller::cTextScroller(void)
{
osd = NULL;
left = top = width = height = 0;
font = NULL;
colorFg = 0;
colorBg = 0;
offset = 0;
shown = 0;
}
cTextScroller::cTextScroller(cOsd *Osd, int Left, int Top, int Width, int Height, const char *Text, const cFont *Font, tColor ColorFg, tColor ColorBg)
{
Set(Osd, Left, Top, Width, Height, Text, Font, ColorFg, ColorBg);
}
void cTextScroller::Set(cOsd *Osd, int Left, int Top, int Width, int Height, const char *Text, const cFont *Font, tColor ColorFg, tColor ColorBg)
{
osd = Osd;
left = Left;
top = Top;
width = Width;
height = Height;
font = Font;
colorFg = ColorFg;
colorBg = ColorBg;
offset = 0;
textWrapper.Set(Text, Font, Width);
shown = min(Total(), height / font->Height());
height = shown * font->Height(); // sets height to the actually used height, which may be less than Height
DrawText();
}
void cTextScroller::Reset(void)
{
osd = NULL; // just makes sure it won't draw anything
}
void cTextScroller::DrawText(void)
{
if (osd) {
for (int i = 0; i < shown; i++)
osd->DrawText(left, top + i * font->Height(), textWrapper.GetLine(offset + i), colorFg, colorBg, font, width);
}
}
void cTextScroller::Scroll(bool Up, bool Page)
{
if (Up) {
if (CanScrollUp()) {
offset -= Page ? shown : 1;
if (offset < 0)
offset = 0;
DrawText();
}
}
else {
if (CanScrollDown()) {
offset += Page ? shown : 1;
if (offset + shown > Total())
offset = Total() - shown;
DrawText();
}
}
}
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