/* * 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 2.0 2007/10/12 12:38:36 kls Exp $ */ #include "osd.h" #include #include #include #include #include #include #include "tools.h" // --- cPalette -------------------------------------------------------------- cPalette::cPalette(int Bpp) { SetBpp(Bpp); SetAntiAliasGranularity(10, 10); } 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 amoung 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; } } 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; 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 = (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; 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); 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) { 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; 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) ; 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; } } } 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; } 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]; } 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); } } // --- cOsd ------------------------------------------------------------------ int cOsd::osdLeft = 0; int cOsd::osdTop = 0; int cOsd::osdWidth = 0; int cOsd::osdHeight = 0; cVector cOsd::Osds; cOsd::cOsd(int Left, int Top, uint Level) { savedRegion = NULL; numBitmaps = 0; 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() { for (int i = 0; i < numBitmaps; i++) delete bitmaps[i]; delete savedRegion; 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 = min(max(Width, MINOSDWIDTH), MAXOSDWIDTH); osdHeight = min(max(Height, MINOSDHEIGHT), MAXOSDHEIGHT); } void cOsd::SetAntiAliasGranularity(uint FixedColors, uint BlendColors) { for (int i = 0; i < numBitmaps; i++) bitmaps[i]->SetAntiAliasGranularity(FixedColors, BlendColors); } 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 = CanHandleAreas(Areas, NumAreas); if (Result == oeOk) { while (numBitmaps) delete bitmaps[--numBitmaps]; 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); } } else 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, uint Level) { 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::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(); } } }