kc3-lang/ftgl/src/FTCharmap.cpp

Branch : - branch - master - tag -

• Show log

  Commit

• Author : sammy
  Date : 2008-05-19 10:06:49
  Hash : 7abb7502
  Message : * Do not crash if the face has no charmaps. Bug found using zzuf: xvfb-run zzuf -q -F5 -r0.0000001:0.1 -s0:10000 -c CTest EunjinNakseo.ttf

• src/FTCharmap.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.
   */
  
  #include "config.h"
  
  #include "FTFace.h"
  #include "FTCharmap.h"
  
  
  FTCharmap::FTCharmap(FTFace* face)
  :   ftFace(*(face->Face())),
      err(0)
  {
      if(!ftFace->charmap)
      {
          if(!ftFace->num_charmaps)
          {
              // This face doesn't even have one charmap!
              err = 0x96; // Invalid_CharMap_Format
              return;
          }
  
          err = FT_Set_Charmap(ftFace, ftFace->charmaps[0]);
      }
  
      ftEncoding = ftFace->charmap->encoding;
  
      for(unsigned int i = 0; i < FTCharmap::MAX_PRECOMPUTED; i++)
      {
          charIndexCache[i] = FT_Get_Char_Index(ftFace, i);
      }
  }
  
  
  FTCharmap::~FTCharmap()
  {
      charMap.clear();
  }
  
  
  bool FTCharmap::CharMap(FT_Encoding encoding)
  {
      if(ftEncoding == encoding)
      {
          err = 0;
          return true;
      }
  
      err = FT_Select_Charmap(ftFace, encoding);
  
      if(!err)
      {
          ftEncoding = encoding;
          charMap.clear();
      }
  
      return !err;
  }
  
  
  unsigned int FTCharmap::GlyphListIndex(const unsigned int characterCode)
  {
      return charMap.find(characterCode);
  }
  
  
  unsigned int FTCharmap::FontIndex(const unsigned int characterCode)
  {
      if(characterCode < FTCharmap::MAX_PRECOMPUTED)
      {
          return charIndexCache[characterCode];
      }
  
      return FT_Get_Char_Index(ftFace, characterCode);
  }
  
  
  void FTCharmap::InsertIndex(const unsigned int characterCode,
                              const size_t containerIndex)
  {
      charMap.insert(characterCode, static_cast<FTCharToGlyphIndexMap::GlyphIndex>(containerIndex));
  }