kc3-lang/ftgl/src/FTFontGlue.cpp

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• Hash : ff3228e6
  Author :
  Date : 2008-04-29T16:47:26
  

  * More cleanup following the private pointer refactoring: + Removed private type enums from the public ftgl.h header. + Protected all private implementation ctors and dtors. + Prevent accidental initialisation of the base classes by protecting their constructors. Derived classes can still be properly instantiated.

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• src/FTFontGlue.cpp

• /*
   * FTGL - OpenGL font library
   *
   * Copyright (c) 2001-2004 Henry Maddocks <ftgl@opengl.geek.nz>
   *               2008 Éric Beets <ericbeets@free.fr>
   *
   * 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.
   */
  
  #include "config.h"
  
  #include "FTInternals.h"
  
  FTGL_BEGIN_C_DECLS
  
  static inline FTGLfont *createFTFont(FTGL::FontType type, const char *fontname)
  {
      FTGLfont *ftgl = (FTGLfont*)malloc(sizeof(FTGLfont));
      ftgl->type = type;
      switch(type)
      {
          case FTGL::FONT_BITMAP:
              ftgl->ptr = new FTGLBitmapFont(fontname);
              break;
          case FTGL::FONT_PIXMAP:
              ftgl->ptr = new FTGLPixmapFont(fontname);
              break;
          case FTGL::FONT_OUTLINE:
              ftgl->ptr = new FTGLOutlineFont(fontname);
              break;
          case FTGL::FONT_POLYGON:
              ftgl->ptr = new FTGLPolygonFont(fontname);
              break;
          case FTGL::FONT_EXTRUDE:
              ftgl->ptr = new FTGLExtrdFont(fontname);
              break;
          case FTGL::FONT_TEXTURE:
              ftgl->ptr = new FTGLTextureFont(fontname);
              break;
      }
  
      if(ftgl->ptr->Error())
      {
          ftglDestroyFont(ftgl);
          return NULL;
      }
  
      return ftgl;
  }
  
  // FTGLBitmapFont::FTGLBitmapFont();
  FTGLfont* ftglCreateBitmapFont(const char *fontname)
  {
      FTGLfont *ftgl = createFTFont(FTGL::FONT_BITMAP, fontname);
      return ftgl;
  }
  
  // FTGLExtrdFont::FTGLExtrdFont();
  FTGLfont* ftglCreateExtrdFont(const char *fontname)
  {
      FTGLfont *ftgl = createFTFont(FTGL::FONT_EXTRUDE, fontname);
      return ftgl;
  }
  
  // FTGLOutlineFont::FTGLOutlineFont();
  FTGLfont* ftglCreateOutlineFont(const char *fontname)
  {
      FTGLfont *ftgl = createFTFont(FTGL::FONT_OUTLINE, fontname);
      return ftgl;
  }
  
  // FTGLPixmapFont::FTGLPixmapFont();
  FTGLfont* ftglCreatePixmapFont(const char *fontname)
  {
      FTGLfont *ftgl = createFTFont(FTGL::FONT_PIXMAP, fontname);
      return ftgl;
  }
  
  // FTGLPolygonFont::FTGLPolygonFont();
  FTGLfont* ftglCreatePolygonFont(const char *fontname)
  {
      FTGLfont *ftgl = createFTFont(FTGL::FONT_POLYGON, fontname);
      return ftgl;
  }
  
  // FTGLTextureFont::FTGLTextureFont();
  FTGLfont* ftglCreateTextureFont(const char *fontname)
  {
      FTGLfont *ftgl = createFTFont(FTGL::FONT_TEXTURE, fontname);
      return ftgl;
  }
  
  #define C_FUN(cret, cname, cargs, cxxerr, cxxname, cxxarg) \
      cret cname cargs \
      { \
          if(!f || !f->ptr) \
          { \
              fprintf(stderr, "FTGL warning: NULL pointer in %s\n", #cname); \
              cxxerr; \
          } \
          switch(f->type) \
          { \
              case FTGL::FONT_BITMAP: \
                  return dynamic_cast<FTGLBitmapFont*>(f->ptr)->cxxname cxxarg; \
              case FTGL::FONT_EXTRUDE: \
                  return dynamic_cast<FTGLExtrdFont*>(f->ptr)->cxxname cxxarg; \
              case FTGL::FONT_OUTLINE: \
                  return dynamic_cast<FTGLOutlineFont*>(f->ptr)->cxxname cxxarg; \
              case FTGL::FONT_PIXMAP: \
                  return dynamic_cast<FTGLPixmapFont*>(f->ptr)->cxxname cxxarg; \
              case FTGL::FONT_POLYGON: \
                  return dynamic_cast<FTGLPolygonFont*>(f->ptr)->cxxname cxxarg; \
              case FTGL::FONT_TEXTURE: \
                  return dynamic_cast<FTGLTextureFont*>(f->ptr)->cxxname cxxarg; \
          } \
          fprintf(stderr, "FTGL warning: %s not implemented for %d\n", #cname, f->type); \
          cxxerr; \
      }
  
  // FTFont::~FTFont();
  void ftglDestroyFont(FTGLfont *f)
  {
      if(!f || !f->ptr)
      {
          fprintf(stderr, "FTGL warning: NULL pointer in %s\n", __FUNCTION__);
          return;
      }
      switch(f->type)
      {
          case FTGL::FONT_BITMAP:
              delete dynamic_cast<FTGLBitmapFont*>(f->ptr); break;
          case FTGL::FONT_EXTRUDE:
              delete dynamic_cast<FTGLExtrdFont*>(f->ptr); break;
          case FTGL::FONT_OUTLINE:
              delete dynamic_cast<FTGLOutlineFont*>(f->ptr); break;
          case FTGL::FONT_PIXMAP:
              delete dynamic_cast<FTGLPixmapFont*>(f->ptr); break;
          case FTGL::FONT_POLYGON:
              delete dynamic_cast<FTGLPolygonFont*>(f->ptr); break;
          case FTGL::FONT_TEXTURE:
              delete dynamic_cast<FTGLTextureFont*>(f->ptr); break;
          default:
              fprintf(stderr, "FTGL warning: %s not implemented for %d\n",
                              __FUNCTION__, f->type);
              break;
      }
  
      f->ptr = NULL;
  }
  
  // bool FTFont::Attach(const char* fontFilePath);
  C_FUN(int, ftglAttachFile, (FTGLfont *f, const char* path),
        return 0, Attach, (path));
  
  // bool FTFont::Attach(const unsigned char *pBufferBytes,
  //                     size_t bufferSizeInBytes);
  C_FUN(int, ftglAttachData, (FTGLfont *f, const unsigned char *p, size_t s),
        return 0, Attach, (p, s));
  
  // bool FTFont::CharMap(FT_Encoding encoding);
  C_FUN(int, ftglCharMap, (FTGLfont *f, FT_Encoding enc),
        return 0, CharMap, (enc));
  
  // unsigned int FTFont::CharMapCount();
  C_FUN(unsigned int, ftglCharMapCount, (FTGLfont *f),
        return 0, CharMapCount, ());
  
  // FT_Encoding* FTFont::CharMapList();
  C_FUN(FT_Encoding *, ftglCharMapList, (FTGLfont* f),
        return NULL, CharMapList, ());
  
  // virtual bool FTFont::FaceSize(const unsigned int size,
  //                               const unsigned int res = 72);
  C_FUN(int, ftglSetFaceSize, (FTGLfont *f, unsigned int s),
        return 0, FaceSize, (s));
  C_FUN(int, ftglSetFaceSizeRes, (FTGLfont *f, unsigned int s, unsigned int r),
        return 0, FaceSize, (s, r));
  
  // unsigned int FTFont::FaceSize() const;
  // XXX: need to call FaceSize() as FTFont::FaceSize() because of FTGLTexture
  C_FUN(unsigned int, ftglGetFaceSize, (FTGLfont *f),
        return 0, FTFont::FaceSize, ());
  
  // virtual void FTFont::Depth(float depth);
  C_FUN(void, ftglSetDepth, (FTGLfont *f, float d), return, Depth, (d));
  
  // virtual void FTFont::Outset(float front, float back);
  C_FUN(void, ftglSetOutset, (FTGLfont *f, float front, float back),
        return, FTFont::Outset, (front, back));
  
  // void FTFont::UseDisplayList(bool useList);
  C_FUN(void, ftglUseDisplayList, (FTGLfont *f, int l),
        return, UseDisplayList, (l));
  
  // float FTFont::Ascender() const;
  C_FUN(float, ftglAscender, (FTGLfont *f), return 0.f, Ascender, ());
  
  // float FTFont::Descender() const;
  C_FUN(float, ftglDescender, (FTGLfont *f), return 0.f, Descender, ());
  
  // float FTFont::LineHeight() const;
  C_FUN(float, ftglLineHeight, (FTGLfont *f), return 0.f, LineHeight, ());
  
  // void FTFont::BBox(const char* string, float& llx, float& lly, float& llz,
  //                   float& urx, float& ury, float& urz);
  C_FUN(void, ftglBBox, (FTGLfont *f, const char* s, float c[6]),
        return, BBox, (s, c[0], c[1], c[2], c[3], c[4], c[5]));
  
  // float FTFont::Advance(const char* string);
  C_FUN(float, ftglAdvance, (FTGLfont *f, const char* s),
        return 0.f, Advance, (s));
  
  // virtual void FTFont::Render(const char* string);
  C_FUN(void, ftglRender, (FTGLfont *f, const char * s), return, Render, (s));
  
  // virtual void Render(const char* string, int renderMode);
  C_FUN(void, ftglRenderMode, (FTGLfont *f, const char *s, int r),
        return, Render, (s, r));
  
  // FT_Error FTFont::Error() const;
  C_FUN(FT_Error, ftglError, (FTGLfont *f), return -1, Error, ());
  
  FTGL_END_C_DECLS
  
  

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