kc3-lang/ftgl/src/FTFont/FTFontImpl.h

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• Hash : 2aa2aeb5
  Author :
  Date : 2008-04-30T16:27:34
  

  * Move include/* to src/FTGL/* so the files in there can directly be referred to as "FTGL/*.h". This is convenient because they will be installed in a similar location. * Put a warning in each legacy public header to advise users to only include the generic <FTGL/ftgl.h> header instead.

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• src/FTFont/FTFontImpl.h

• /*
   * FTGL - OpenGL font library
   *
   * Copyright (c) 2001-2004 Henry Maddocks <ftgl@opengl.geek.nz>
   *
   * 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 __FTFontImpl__
  #define __FTFontImpl__
  
  #include "FTGL/ftgl.h"
  
  #include "FTFace.h"
  
  class FTGlyphContainer;
  class FTGlyph;
  class FTLayout;
  
  class FTFontImpl
  {
          /* Allow FTLayout classes to access DoRender and CheckGlyph */
          friend class FTLayoutImpl;
          friend class FTFont;
  
      protected:
          FTFontImpl(char const *fontFilePath);
  
  
          FTFontImpl(const unsigned char *pBufferBytes, size_t bufferSizeInBytes);
  
          virtual ~FTFontImpl();
  
          virtual void Render(const char* string);
  
          virtual void Render(const char* string, int renderMode);
  
          virtual void Render(const wchar_t* string);
  
          virtual void Render(const wchar_t *string, int renderMode);
  
          virtual bool FaceSize(const unsigned int size,
                                const unsigned int res);
  
          virtual unsigned int FaceSize() const;
  
          virtual void Depth(float depth);
  
          virtual void Outset(float outset);
  
          virtual void Outset(float front, float back);
  
          void BBox(const char *string, const int start, const int end,
                    float& llx, float& lly, float& llz,
                    float& urx, float& ury, float& urz);
  
          void BBox(const wchar_t *string, const int start, const int end,
                    float& llx, float& lly, float& llz,
                    float& urx, float& ury, float& urz);
  
          float Advance(const wchar_t* string);
  
          float Advance(const char* string);
  
          /**
           * Construct a glyph of the correct type.
           *
           * Clients must override the function and return their specialised
           * FTGlyph.
           *
           * @param g The glyph index NOT the char code.
           * @return  An FT****Glyph or <code>null</code> on failure.
           */
          virtual FTGlyph* MakeGlyph(unsigned int g) = 0;
  
          /**
           * Current face object
           */
          FTFace face;
  
          /**
           * Current size object
           */
          FTSize charSize;
  
          /**
           * Flag to enable or disable the use of Display Lists inside FTGL
           * <code>true</code> turns ON display lists.
           * <code>false</code> turns OFF display lists.
           */
          bool useDisplayLists;
  
          /**
           * Current error code. Zero means no error.
           */
          FT_Error err;
  
      private:
          /**
           * Render a character.
           * This function does an implicit conversion on its arguments.
           *
           * @param chr       current character
           * @param nextChr   next character
           * @param origin       The position of the origin of the character.
           *                  After rendering the point referenced by origin
           *                  will be incremented by the kerning advance of
           *                  char and nextChr.
           * @param renderMode    Render mode to display
           */
          void DoRender(const unsigned int chr,
                        const unsigned int nextChr, FTPoint &origin,
                        int renderMode);
  
          /**
           * Check that the glyph at <code>chr</code> exist. If not load it.
           *
           * @param chr  character index
           * @return <code>true</code> if the glyph can be created.
           */
          bool CheckGlyph(const unsigned int chr);
  
          /**
           * An object that holds a list of glyphs
           */
          FTGlyphContainer* glyphList;
  
          /**
           * Current pen or cursor position;
           */
          FTPoint pen;
  
          /* Internal generic BBox() implementation */
          template <typename T>
          inline void BBoxI(const T *string, const int start, const int end,
                            float& llx, float& lly, float& llz,
                            float& urx, float& ury, float& urz);
  
          /* Internal generic BBox() implementation */
          template <typename T>
          inline float AdvanceI(const T* string);
  
          /* Internal generic Render() implementation */
          template <typename T>
          inline void RenderI(const T* string, int renderMode);
  };
  
  #endif  //  __FTFontImpl__
  
  

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