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# csplugincommon/canvas/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   void WriteString (iFont *font, int x, int y, int fg, int bg,
    00044     const void* text, bool isWide, uint flags)
    00045   {
    00046     int realColorFG;
    00047     uint8 alphaFG;
    00048     SplitAlpha (fg, realColorFG, alphaFG);
    00049     int realColorBG;
    00050     uint8 alphaBG;
    00051     SplitAlpha (bg, realColorBG, alphaBG);
    00052
    00053     if (alphaBG == 0)
    00054     {
    00055       if (alphaFG == 0)
    00056         return;
    00057       realColorBG = realColorFG;
    00058       if (alphaFG == 255)
    00059       {
    00060         csG2DDrawText<Tpixel, csPixMixerCopy<Tpixel>, csPixMixerNoop<Tpixel>,
    00061           Tpixmixer>::DrawText (this, font, x, y, realColorFG, alphaFG,
    00062           realColorBG, alphaBG, text, isWide, flags);
    00063       }
    00064       else
    00065       {
    00066         csG2DDrawText<Tpixel, Tpixmixer, csPixMixerNoop<Tpixel>,
    00067           Tpixmixer>::DrawText (this, font, x, y, realColorFG, alphaFG,
    00068           realColorBG, alphaBG, text, isWide, flags);
    00069       }
    00070     }
    00071     else if (alphaBG == 255)
    00072     {
    00073       if (alphaFG == 0)
    00074       {
    00075         csG2DDrawText<Tpixel, csPixMixerNoop<Tpixel>, csPixMixerCopy<Tpixel>,
    00076           Tpixmixer>::DrawText (this, font, x, y, realColorFG, alphaFG,
    00077           realColorBG, alphaBG, text, isWide, flags);
    00078       }
    00079       else if (alphaFG == 255)
    00080       {
    00081         csG2DDrawText<Tpixel, csPixMixerCopy<Tpixel>, csPixMixerCopy<Tpixel>,
    00082           Tpixmixer>::DrawText (this, font, x, y, realColorFG, alphaFG,
    00083           realColorBG, alphaBG, text, isWide, flags);
    00084       }
    00085       else
    00086       {
    00087         csG2DDrawText<Tpixel, Tpixmixer, csPixMixerCopy<Tpixel>,
    00088           Tpixmixer>::DrawText (this, font, x, y, realColorFG, alphaFG,
    00089           realColorBG, alphaBG, text, isWide, flags);
    00090       }
    00091     }
    00092     else
    00093     {
    00094       if (alphaFG == 0)
    00095       {
    00096         csG2DDrawText<Tpixel, csPixMixerNoop<Tpixel>, Tpixmixer,
    00097           Tpixmixer>::DrawText (this, font, x, y, realColorFG, alphaFG,
    00098           realColorBG, alphaBG, text, isWide, flags);
    00099       }
    00100       else if (alphaFG == 255)
    00101       {
    00102         csG2DDrawText<Tpixel, csPixMixerCopy<Tpixel>, Tpixmixer,
    00103           Tpixmixer>::DrawText (this, font, x, y, realColorFG, alphaFG,
    00104           realColorBG, alphaBG, text, isWide, flags);
    00105       }
    00106       else
    00107       {
    00108         csG2DDrawText<Tpixel, Tpixmixer, Tpixmixer, Tpixmixer>::DrawText (
    00109           this, font, x, y, realColorFG, alphaFG, realColorBG, alphaBG, text,
    00110           isWide, flags);
    00111       }
    00112     }
    00113   }
    00114 public:
    00115   csSoftFontCacheImpl (csGraphics2D* G2D) : csSoftFontCache (G2D)
    00116   {
    00117   }
    00118   virtual void WriteString (iFont *font, int x, int y, int fg, int bg,
    00119     const utf8_char* text, uint flags)
    00120   {
    00121     if (!text || !*text) return;
    00122
    00123     WriteString (font, x, y, fg, bg, text, false, flags);
    00124   }
    00125   virtual void WriteString (iFont *font, int x, int y, int fg, int bg,
    00126     const wchar_t* text, uint flags)
    00127   {
    00128     if (!text || !*text) return;
    00129
    00130     WriteString (font, x, y, fg, bg, text, true, flags);
    00131   }
    00132 };
    00133
    00136 #endif // __CS_CSPLUGINCOMMON_CANVAS_SOFTFONTCACHEIMPL_H__