kc3-lang/ftgl/src/FTFace.cpp

Branch : - branch - master - tag -

• Show log

  Commit

• Author : sammy
  Date : 2008-04-12 22:44:48
  Hash : 141112c4
  Message : * Add licensing information to all files in the library.

• src/FTFace.cpp

• /*
   * 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.
   *
   * Alternatively, you can redistribute and/or modify this software under
   * the terms of the GNU Lesser General Public License as published by
   * the Free Software Foundation; either version 2.1 of the License,
   * or (at your option) any later version.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this software; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA.
   */
  
  #include "config.h"
  
  #include "FTFace.h"
  #include "FTLibrary.h"
  
  #include FT_TRUETYPE_TABLES_H
  
  FTFace::FTFace( const char* fontFilePath)
  :   numGlyphs(0),
      fontEncodingList(0),
      err(0)
  {
      const FT_Long DEFAULT_FACE_INDEX = 0;
      ftFace = new FT_Face;
  
      err = FT_New_Face( *FTLibrary::Instance().GetLibrary(), fontFilePath, DEFAULT_FACE_INDEX, ftFace);
  
      if( err)
      {
          delete ftFace;
          ftFace = 0;
      }
      else
      {
          numGlyphs = (*ftFace)->num_glyphs;
          hasKerningTable = FT_HAS_KERNING((*ftFace));
      }
  }
  
  
  FTFace::FTFace( const unsigned char *pBufferBytes, size_t bufferSizeInBytes)
  :   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
      {
          numGlyphs = (*ftFace)->num_glyphs;
      }
  }
  
  
  FTFace::~FTFace()
  {
      if( ftFace)
      {
          FT_Done_Face( *ftFace);
          delete ftFace;
          ftFace = 0;
      }
  }
  
  
  bool FTFace::Attach( const char* fontFilePath)
  {
      err = FT_Attach_File( *ftFace, fontFilePath);
      return !err;
  }
  
  
  bool FTFace::Attach( const unsigned char *pBufferBytes, size_t bufferSizeInBytes)
  {
      FT_Open_Args open;
  
      open.flags = FT_OPEN_MEMORY;
      open.memory_base = (FT_Byte *)pBufferBytes;
      open.memory_size = bufferSizeInBytes;
  
      err = FT_Attach_Stream( *ftFace, &open);
      return !err;
  }
  
  
  const FTSize& FTFace::Size( const unsigned int size, const unsigned int res)
  {
      charSize.CharSize( ftFace, size, res, res);
      err = charSize.Error();
  
      return charSize;
  }
  
  
  unsigned int FTFace::CharMapCount()
  {
      return (*ftFace)->num_charmaps;
  }
  
  
  FT_Encoding* FTFace::CharMapList()
  {
      if( 0 == fontEncodingList)
      {
          fontEncodingList = new FT_Encoding[CharMapCount()];
          for( size_t encodingIndex = 0; encodingIndex < CharMapCount(); ++encodingIndex)
          {
              fontEncodingList[encodingIndex] = (*ftFace)->charmaps[encodingIndex]->encoding;
          }
      }
      
      return fontEncodingList;
  }
  
  
  FTPoint FTFace::KernAdvance( unsigned int index1, unsigned int index2)
  {
      float x, y;
      x = y = 0.0f;
  
      if( hasKerningTable && 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) / 64.0f;
              y = static_cast<float>( kernAdvance.y) / 64.0f;
          }
      }
      
      return FTPoint( x, y, 0.0);
  }
  
  
  FT_GlyphSlot FTFace::Glyph( unsigned int index, FT_Int load_flags)
  {
      err = FT_Load_Glyph( *ftFace, index, load_flags);
      if( err)
      {
          return NULL;
      }
  
      return (*ftFace)->glyph;
  }