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softfontcacheimpl.h

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00001 /*
00002     Copyright (C) 2004 by Jorrit Tyberghein
00003               (C) 2004 by Frank Richter
00004 
00005     This library is free software; you can redistribute it and/or
00006     modify it under the terms of the GNU Library General Public
00007     License as published by the Free Software Foundation; either
00008     version 2 of the License, or (at your option) any later version.
00009 
00010     This library is distributed in the hope that it will be useful,
00011     but WITHOUT ANY WARRANTY; without even the implied warranty of
00012     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013     Library General Public License for more details.
00014 
00015     You should have received a copy of the GNU Library General Public
00016     License along with this library; if not, write to the Free
00017     Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
00018 */
00019 
00020 #ifndef __CS_CSPLUGINCOMMON_CANVAS_SOFTFONTCACHEIMPL_H__
00021 #define __CS_CSPLUGINCOMMON_CANVAS_SOFTFONTCACHEIMPL_H__
00022 
00027 #include "graph2d.h"
00028 #include "csplugincommon/canvas/draw_text.h"
00029 
00040 template <class Tpixel, class Tpixmixer>
00041 class csSoftFontCacheImpl : public csSoftFontCache
00042 {
00043 public:
00044   csSoftFontCacheImpl (csGraphics2D* G2D) : csSoftFontCache (G2D)
00045   {
00046   }
00047   virtual void WriteString (iFont *font, int x, int y, int fg, int bg, 
00048     const utf8_char* text, uint flags)
00049   {
00050     int realColorFG;
00051     uint8 alphaFG;
00052     SplitAlpha (fg, realColorFG, alphaFG);
00053     int realColorBG;
00054     uint8 alphaBG;
00055     SplitAlpha (bg, realColorBG, alphaBG);
00056 
00057     if (alphaBG == 0)
00058     {
00059       if (alphaFG == 0)
00060         return;
00061       realColorBG = realColorFG;
00062       if (alphaFG == 255)
00063       {
00064         csG2DDrawText<Tpixel, csPixMixerCopy<Tpixel>, csPixMixerNoop<Tpixel>, 
00065           Tpixmixer>::DrawText (this, font, x, y, realColorFG, alphaFG, 
00066           realColorBG, alphaBG, text, flags);
00067       }
00068       else
00069       {
00070         csG2DDrawText<Tpixel, Tpixmixer, csPixMixerNoop<Tpixel>, 
00071           Tpixmixer>::DrawText (this, font, x, y, realColorFG, alphaFG, 
00072           realColorBG, alphaBG, text, flags);
00073       }
00074     }
00075     else if (alphaBG == 255)
00076     {
00077       if (alphaFG == 0)
00078       {
00079         csG2DDrawText<Tpixel, csPixMixerNoop<Tpixel>, csPixMixerCopy<Tpixel>, 
00080           Tpixmixer>::DrawText (this, font, x, y, realColorFG, alphaFG, 
00081           realColorBG, alphaBG, text, flags);
00082       }
00083       else if (alphaFG == 255)
00084       {
00085         csG2DDrawText<Tpixel, csPixMixerCopy<Tpixel>, csPixMixerCopy<Tpixel>, 
00086           Tpixmixer>::DrawText (this, font, x, y, realColorFG, alphaFG, 
00087           realColorBG, alphaBG, text, flags);
00088       }
00089       else
00090       {
00091         csG2DDrawText<Tpixel, Tpixmixer, csPixMixerCopy<Tpixel>, 
00092           Tpixmixer>::DrawText (this, font, x, y, realColorFG, alphaFG, 
00093           realColorBG, alphaBG, text, flags);
00094       }
00095     }
00096     else
00097     {
00098       if (alphaFG == 0)
00099       {
00100         csG2DDrawText<Tpixel, csPixMixerNoop<Tpixel>, Tpixmixer, 
00101           Tpixmixer>::DrawText (this, font, x, y, realColorFG, alphaFG, 
00102           realColorBG, alphaBG, text, flags);
00103       }
00104       else if (alphaFG == 255)
00105       {
00106         csG2DDrawText<Tpixel, csPixMixerCopy<Tpixel>, Tpixmixer, 
00107           Tpixmixer>::DrawText (this, font, x, y, realColorFG, alphaFG, 
00108           realColorBG, alphaBG, text, flags);
00109       }
00110       else
00111       {
00112         csG2DDrawText<Tpixel, Tpixmixer, Tpixmixer, Tpixmixer>::DrawText (
00113           this, font, x, y, realColorFG, alphaFG, realColorBG, alphaBG, text, 
00114           flags);
00115       }
00116     }
00117   }
00118 };
00119 
00122 #endif // __CS_CSPLUGINCOMMON_CANVAS_SOFTFONTCACHEIMPL_H__

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