kc3-lang/ftgl/src/FTGlyph/FTTextureGlyphImpl.h

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  Date : 2009-07-19T13:05:50
  

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• src/FTGlyph/FTTextureGlyphImpl.h

• /*
   * FTGL - OpenGL font library
   *
   * Copyright (c) 2001-2004 Henry Maddocks <ftgl@opengl.geek.nz>
   * Copyright (c) 2008 Sam Hocevar <sam@hocevar.net>
   *
   * Permission is hereby granted, free of charge, to any person obtaining
   * a copy of this software and associated documentation files (the
   * "Software"), to deal in the Software without restriction, including
   * without limitation the rights to use, copy, modify, merge, publish,
   * distribute, sublicense, and/or sell copies of the Software, and to
   * permit persons to whom the Software is furnished to do so, subject to
   * the following conditions:
   *
   * The above copyright notice and this permission notice shall be
   * included in all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
   * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
   * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
   * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
   * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
   * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
   * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
   */
  
  #ifndef __FTTextureGlyphImpl__
  #define __FTTextureGlyphImpl__
  
  #include "FTGlyphImpl.h"
  
  class FTTextureGlyphImpl : public FTGlyphImpl
  {
      friend class FTTextureGlyph;
      friend class FTTextureFontImpl;
  
      protected:
          FTTextureGlyphImpl(FT_GlyphSlot glyph, int id, int xOffset,
                             int yOffset, int width, int height);
  
          virtual ~FTTextureGlyphImpl();
  
          virtual const FTPoint& RenderImpl(const FTPoint& pen, int renderMode);
  
      private:
          /**
           * Reset the currently active texture to zero to get into a known
           * state before drawing a string. This is to get round possible
           * threading issues.
           */
          static void ResetActiveTexture() { activeTextureID = 0; }
  
          /**
           * The width of the glyph 'image'
           */
          int destWidth;
  
          /**
           * The height of the glyph 'image'
           */
          int destHeight;
  
          /**
           * Vector from the pen position to the topleft corner of the pixmap
           */
          FTPoint corner;
  
          /**
           * The texture co-ords of this glyph within the texture.
           */
          FTPoint uv[2];
  
          /**
           * The texture index that this glyph is contained in.
           */
          int glTextureID;
  
          /**
           * The texture index of the currently active texture
           *
           * We keep track of the currently active texture to try to reduce the
           * number of texture bind operations.
           */
          static GLint activeTextureID;
  };
  
  #endif  //  __FTTextureGlyphImpl__
  
  

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