kc3-lang/ftgl/src/FTFace.cpp

Branch : - branch - master - tag -

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  Commit

• Author : henry
  Date : 2003-04-13 02:09:47
  Hash : f29956a1
  Message : Fixed FTGLTextureFont resize bug

• src/FTFace.cpp

• #include    "FTFace.h"
  #include    "FTLibrary.h"
  #include    "FTCharmap.h"
  
  
  #include FT_TRUETYPE_TABLES_H
  
  FTFace::FTFace( const char* filename)
  :   charMap(0),
      numGlyphs(0),
      err(0)
  {
      const FT_Long DEFAULT_FACE_INDEX = 0;
      ftFace = new FT_Face;
  
      err = FT_New_Face( *FTLibrary::Instance().GetLibrary(), filename, DEFAULT_FACE_INDEX, ftFace);
  
      if( err)
      {
          delete ftFace;
          ftFace = 0;
      }
      else
      {
          charMap = new FTCharmap( *ftFace);
          numGlyphs = (*ftFace)->num_glyphs;
      }
  }
  
  
  FTFace::FTFace( const unsigned char *pBufferBytes, size_t bufferSizeInBytes)
  :   charMap(0),
      numGlyphs(0),
      err(0)
  {
      const FT_Long DEFAULT_FACE_INDEX = 0;
      ftFace = new FT_Face;
  
      err = FT_New_Memory_Face( *FTLibrary::Instance().GetLibrary(), (FT_Byte *)pBufferBytes, bufferSizeInBytes, DEFAULT_FACE_INDEX, ftFace);
  
      if( err)
      {
          delete ftFace;
          ftFace = 0;
      }
      else
      {
          charMap = new FTCharmap( *ftFace);
          numGlyphs = (*ftFace)->num_glyphs;
      }
  }
  
  
  FTFace::~FTFace()
  {
      delete charMap;
      Close();
  }
  
  
  bool FTFace::Attach( const char* filename)
  {
      err = FT_Attach_File( *ftFace, filename);
      return !err;
  }
  
  
  bool FTFace::Attach( const unsigned char *pBufferBytes, size_t bufferSizeInBytes)
  {
      FT_Open_Args open;
  
      open.flags = (FT_Open_Flags)1; // FT_OPEN_MEMORY;
      open.memory_base = (FT_Byte *)pBufferBytes;
      open.memory_size = bufferSizeInBytes;
  
      err = FT_Attach_Stream( *ftFace, &open);
      return !err;
  }
  
  
  void FTFace::Close()
  {
      if( ftFace)
      {
          FT_Done_Face( *ftFace);
          delete ftFace;
          ftFace = 0;
      }
  }
  
  
  void* FTFace::FontTable( unsigned int tableName) const
  {
  //    return FT_Get_Sfnt_Table( *ftFace, tableName);
      return 0;
  }
  
  
  const FTSize& FTFace::Size( const unsigned int size, const unsigned int res)
  {
      charSize.CharSize( ftFace, size, res, res);
      err = charSize.Error();
  
      return charSize;
  }
  
  
  bool FTFace::CharMap( FT_Encoding encoding)
  {
      bool result = charMap->CharMap( encoding);
      err = charMap->Error();
      return result;
  }
  
  
  unsigned int FTFace::UnitsPerEM() const
  {
      return (*ftFace)->units_per_EM;
  }
  
  
  unsigned int FTFace::CharIndex( unsigned int index) const
  {
      return charMap->CharIndex( index);
  }
  
  
  FTPoint FTFace::KernAdvance( unsigned int index1, unsigned int index2)
  {
      float x, y;
      x = y = 0.0f;
  
      if( FT_HAS_KERNING((*ftFace)) && index1 && index2)
      {
          FT_Vector kernAdvance;
          kernAdvance.x = kernAdvance.y = 0;
  
          err = FT_Get_Kerning( *ftFace, index1, index2, ft_kerning_unfitted, &kernAdvance);
          if( !err)
          {   
              x = static_cast<float>( kernAdvance.x) / 64;
              y = static_cast<float>( kernAdvance.y) / 64;
          }
      }
      
      return FTPoint( x, y, 0.0);
  }
  
  
  FT_Glyph* FTFace::Glyph( unsigned int index, FT_Int load_flags)
  {
      err = FT_Load_Glyph( *ftFace, index, load_flags);
      if( err)
      {
          return NULL;
      }
      
      err = FT_Get_Glyph( (*ftFace)->glyph, &ftGlyph);
      if( err)
      {
          return NULL;
      }
  
      return &ftGlyph;
  }