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vdr/osd.c
Klaus Schmidinger 9d12ac30f0 Version 1.3.44 
- Fixed setting the audio language codes in 'Transfer-Mode' (reported by Rolf
  Ahrenberg). The actual problem was the call to the Transferring() function in
  cDevice::AttachPlayer() before assigning the player.
- Fixed removing the '-' when entering a channel number where there is no other
  one that fits the input (thanks to Joachim Wilke).
- Fixed the 'libsi' function CharArray::checkSize(), which made a previous workaround
  in libsi/descriptor.c obsolete (thanks to Marcel Wiesweg).
- The "Ok" key in the "Jump" mode of the replay progress display now confirms the
  jump instead of closing the display (thanks to Christoph Haubrich).
- The 'summary' field of a timer definition has been renamed to 'aux', and is now
  only used for external applications to store auxiliary information with a timer,
  which has no meaning whatsoever to VDR itself.
  The contents of the 'aux' field of a timer is copied into the recording's
  'info.vdr' file, using the tag character '@'.
- The description of a recording is now taken exclusively from its related EPG
  data. If an application wants to use a different description it needs to set
  it with SVDRP/PUTE and use table ID 0x00, so that it won't be overwritten (as
  a side effect, however, this also disables VPS for such an event).
- There is no more "Summary" menu when pressing "Ok" in the "Timers" menu.
  The "Ok" key now always opens the "Edit timer" menu.
- The upper 16 bit of a timer's "flags" are no longer treated specially when a timer
  is modified in the "Edit timer" menu. If an external application needs to know if
  a timer was modified, it has to keep a copy of the timer's data and compare that
  to the actual data.
- The new function cRecordingInfo::ChannelID() can be used to retrieve the ID of
  the channel a recording was made from.
- The 'info.vdr' file of a recording now also contains the 'E' and 'V' records of
  the EPG event used when creating it.
- The option "Setup/OSD/Sort timers" has been removed. Timers are always sorted
  by their start time and priority.
- The "Blue" key in the "Timers" menu now displays the EPG info of the event the
  selected timer will record (if available). The "On/Off" function has been shifted
  to the "Red" button. Editing a timer is done by pressing "Ok".
- When determining which event a timer is going to record, all available events
  in the future are now taken into account (no more limit to 4 hours in the
  future). This has been done so that the event info is available in the "Timers"
  menu when pressing the "Blue" button. In order to avoid unnecessary work, each
  timer now has its own timestamp to control whether its schedule has changed
  since the last time its event has been set.
- Fixed setting events to timers in case a non-VPS event has expired.
- There is now a log message "timer ... set to event ..." when defining a timer
  from the EPG menu.
- Lines tagged with '#' in the 'info.vdr' file of a recording are now silently
  ignored when reading that file (suggested by Peter Bieringer). Such lines can
  be used by external tools to store arbitrary information.
- The 'event id' in EPG data has been extended to 32 bit, so that external tools
  can generate ids that don't collide with those from the DVB data stream
  (suggested by Matthias Schniedermeyer).
- The DrawBitmap() function now has a new parameter 'Overlay' that allows a bitmap
  to be drawn with a transparent background (thanks to Alexander Hans).
- Fixed cSchedule::GetFollowingEvent() in case there is currently no present event
  running (thanks to Pekka Mauno).
2006-02-26 18:00:00 +01:00

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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 1.67 2006/02/26 14:31:31 kls Exp $
*/
#include "osd.h"
#include <math.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <sys/unistd.h>
#include "tools.h"
// --- cPalette --------------------------------------------------------------
cPalette::cPalette(int Bpp)
{
SetBpp(Bpp);
}
void cPalette::Reset(void)
{
numColors = 0;
modified = false;
}
int cPalette::Index(tColor Color)
{
for (int i = 0; i < numColors; i++) {
if (color[i] == Color)
return i;
}
if (numColors < maxColors) {
color[numColors++] = Color;
modified = true;
return numColors - 1;
}
dsyslog("too many different colors used in palette");
//TODO: return the index of the "closest" color?
return 0;
}
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)
{
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;
}
}
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;
}
// --- cBitmap ---------------------------------------------------------------
cBitmap::cBitmap(int Width, int Height, int Bpp, int X0, int Y0)
:cPalette(Bpp)
{
bitmap = NULL;
x0 = X0;
y0 = Y0;
SetSize(Width, Height);
}
cBitmap::cBitmap(const char *FileName)
{
bitmap = NULL;
x0 = 0;
y0 = 0;
LoadXpm(FileName);
}
cBitmap::cBitmap(const char *const Xpm[])
{
bitmap = NULL;
x0 = 0;
y0 = 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);
break;
}
lines = h + n + 1;
Xpm = MALLOC(char *, lines);
}
char *q = strchr(s, '"');
if (!q) {
esyslog("ERROR: missing quotes in XPM file '%s'", FileName);
break;
}
*q = 0;
if (index < lines)
Xpm[index++] = strdup(s);
else {
esyslog("ERROR: too many lines in XPM file '%s'", FileName);
break;
}
}
}
if (index == lines)
Result = SetXpm(Xpm);
else
esyslog("ERROR: too few lines in XPM file '%s'", FileName);
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)
{
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) {
s = "#00000000";
NoneColorIndex = i;
if (IgnoreNone)
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;
if (0 <= x && x < width && 0 <= y && y < height)
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;
if (Width || Height) {
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);
limit = x + cw - x0;
if (Width) {
if ((Alignment & taLeft) != 0)
;
else if ((Alignment & taRight) != 0) {
if (w < Width)
x += Width - w;
}
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;
}
}
}
else if (!Intersects(x, y, x + w - 1, y + h - 1))
return;
x -= x0;
y -= y0;
tIndex fg = Index(ColorFg);
tIndex bg = (ColorBg != clrTransparent) ? Index(ColorBg) : 0;
while (s && *s) {
const cFont::tCharData *CharData = Font->CharData(*s++);
if (limit && int(x + CharData->width) > limit)
break; // we don't draw partial characters
if (int(x + CharData->width) > 0) {
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;
}
}
}
x += CharData->width;
if (x > width - 1)
break;
}
}
}
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;
}
int TwoASquare = 2 * rx * rx;
int TwoBSquare = 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;
}
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;
}
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)
{
// TODO This is just a quick and dirty implementation of a slope drawing
// machanism. If somebody can come up with a better solution, let's have it!
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)
{
return &bitmap[y * width + x];
}
// --- cOsd ------------------------------------------------------------------
int cOsd::isOpen = 0;
cOsd::cOsd(int Left, int Top)
{
if (isOpen)
esyslog("ERROR: OSD opened without closing previous OSD!");
savedRegion = NULL;
numBitmaps = 0;
left = Left;
top = Top;
width = height = 0;
isOpen++;
}
cOsd::~cOsd()
{
for (int i = 0; i < numBitmaps; i++)
delete bitmaps[i];
delete savedRegion;
isOpen--;
}
cBitmap *cOsd::GetBitmap(int Area)
{
return Area < numBitmaps ? bitmaps[Area] : NULL;
}
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;
}
}
}
return Result;
}
eOsdError cOsd::SetAreas(const tArea *Areas, int NumAreas)
{
eOsdError Result = oeUnknown;
if (numBitmaps == 0) {
Result = CanHandleAreas(Areas, NumAreas);
if (Result == oeOk) {
width = height = 0;
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);
}
}
}
if (Result != oeOk)
esyslog("ERROR: cOsd::SetAreas returned %d", Result);
return Result;
}
void cOsd::SaveRegion(int x1, int y1, int x2, int y2)
{
delete savedRegion;
savedRegion = new cBitmap(x2 - x1 + 1, y2 - y1 + 1, 8, x1, y1);
for (int i = 0; i < numBitmaps; i++)
savedRegion->DrawBitmap(bitmaps[i]->X0(), bitmaps[i]->Y0(), *bitmaps[i]);
}
void cOsd::RestoreRegion(void)
{
if (savedRegion) {
DrawBitmap(savedRegion->X0(), savedRegion->Y0(), *savedRegion);
delete savedRegion;
savedRegion = NULL;
}
}
eOsdError cOsd::SetPalette(const cPalette &Palette, int Area)
{
if (Area < numBitmaps)
bitmaps[Area]->Take(Palette);
return oeUnknown;
}
void cOsd::DrawPixel(int x, int y, tColor Color)
{
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)
{
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)
{
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)
{
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)
{
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)
{
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;
cOsdProvider::cOsdProvider(void)
{
delete osdProvider;
osdProvider = this;
}
cOsdProvider::~cOsdProvider()
{
osdProvider = NULL;
}
cOsd *cOsdProvider::NewOsd(int Left, int Top)
{
if (cOsd::IsOpen())
esyslog("ERROR: attempt to open OSD while it is already open - using dummy OSD!");
else if (osdProvider)
return osdProvider->CreateOsd(Left, Top);
else
esyslog("ERROR: no OSD provider available - using dummy OSD!");
return new cOsd(Left, Top); // create a dummy cOsd, so that access won't result in a segfault
}
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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