kc3-lang/ftgl/src/FTFace.cpp

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• Hash : 9a1fd558
  Author :
  Date : 2001-08-26T22:53:23
  

  Fixed a bug in the kerning code. Dims are in 1/64 pixels.

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• src/FTFace.cpp

• #include	"FTFace.h"
  #include	"FTLibrary.h"
  #include	"FTGL.h"
  
  
  FTFace::FTFace()
  :	ftFace(0),
  	numCharMaps(0),
  	numGlyphs(0)
  {}
  
  
  FTFace::~FTFace()
  {
  	if( ftFace)
  	{
  		Close();
  		delete ftFace; // is this a prob?
  		ftFace = 0;
  	}
  }
  
  
  bool FTFace::Open( const char* filename)
  {
  	ftFace = new FT_Face;
  	err = FT_New_Face( *FTLibrary::Instance().GetLibrary(), filename, 0, ftFace);
  
  	if( err)
      {
  		delete ftFace;
  		ftFace = 0;
  	    return false;
      }
      else
      {
  		return true;
  	}
  }
  
  
  void FTFace::Close()
  {
  	FT_Done_Face( *ftFace);
  }
  
  
  FTSize& FTFace::Size( const unsigned int size, const unsigned int res )
  {
  	if( !charSize.CharSize( ftFace, size, res, res))
  	{
  		err = charSize.Error();
  	}
  	
  	return charSize;
  }
  
  
  bool FTFace::CharMap( FT_Encoding encoding )
  {
  // 	ft_encoding_none, 0, 0, 0, 0
  // 	ft_encoding_symbol,  's', 'y', 'm', 'b'
  // 	ft_encoding_unicode, 'u', 'n', 'i', 'c'
  // 	ft_encoding_latin_2, 'l', 'a', 't', '2'
  // 	ft_encoding_sjis,    's', 'j', 'i', 's'
  // 	ft_encoding_gb2312,  'g', 'b', ' ', ' '
  // 	ft_encoding_big5,    'b', 'i', 'g', '5'
  // 	ft_encoding_wansung, 'w', 'a', 'n', 's'
  // 	ft_encoding_johab,   'j', 'o', 'h', 'a'
  // 	ft_encoding_adobe_standard, 'A', 'D', 'O', 'B'
  // 	ft_encoding_adobe_expert,   'A', 'D', 'B', 'E'
  // 	ft_encoding_adobe_custom,   'A', 'D', 'B', 'C'
  // 	ft_encoding_apple_roman, 'a', 'r', 'm', 'n'
  	
  // 	FT_CharMap  found = 0;
  //     FT_CharMap  charmap;
  //     int         n;
  // 
  //     for ( n = 0; n < face->num_charmaps; n++ )
  //     {
  //       charmap = face->charmaps[n];
  //       if ( charmap->platform_id == my_platform_id &&
  //            charmap->encoding_id == my_encoding_id )
  //       {
  //         found = charmap;
  //         break;
  //       }
  //     }
  // 
  //     if ( !found ) { ... }
  // 
  //     /* now, select the charmap for the face object */
  //     error = FT_Set_CharMap( face, found );
  //    if ( error ) { ... }
  
  
  	err = FT_Select_Charmap( *ftFace, encoding );
  	return !err;
  }
  
  
  unsigned int FTFace::CharIndex( unsigned int index ) const
  {
  	return FT_Get_Char_Index( *ftFace, index);
  }
  
  
  FT_Vector& FTFace::KernAdvance( unsigned int index1, unsigned int index2 )
  {
  	kernAdvance.x = 0; kernAdvance.y = 0;
  	
  	if( FT_HAS_KERNING((*ftFace)) && index1 && index2)
  	{
  		err = FT_Get_Kerning( *ftFace, index1, index2, ft_kerning_unfitted, &kernAdvance);
  		if( !err)
  		{	
  			kernAdvance.x /= 64; kernAdvance.y /= 64;
  		}
  	}
  	
  	return kernAdvance;
  }
  
  
  FT_Glyph& FTFace::Glyph( unsigned int index, FT_Int load_flags)
  {
  	err = FT_Load_Glyph( *ftFace, index, load_flags);	
  	err = FT_Get_Glyph( (*ftFace)->glyph, &ftGlyph);
  		
  	if( !err)
  	{
  		return ftGlyph;
  	}
  	else
  	{
  		return NULL; // FIXME
  	}
  }
  
  
  
  

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