kc3-lang/ftgl/src/FTSize.cpp

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• Author : sammy
  Date : 2008-04-29 14:39:28
  Hash : 1f4a94f8
  Message : * Since the MIT license is LGPL-compatible, there is no real point in shipping FTGL under a dual license. Consequently removing LGPL references from the code, in agreement with Sean.

• src/FTSize.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 "FTSize.h"
  
  
  FTSize::FTSize()
  :   ftFace(0),
      ftSize(0),
      size(0),
      xResolution(0),
      yResolution(0),
      err(0)
  {}
  
  
  FTSize::~FTSize()
  {}
  
  
  bool FTSize::CharSize(FT_Face* face, unsigned int pointSize, unsigned int xRes, unsigned int yRes)
  {
      if(size != pointSize || xResolution != xRes || yResolution != yRes)
      {
          err = FT_Set_Char_Size(*face, 0L, pointSize * 64, xResolution, yResolution);
  
          if(!err)
          {
              ftFace = face;
              size = pointSize;
              xResolution = xRes;
              yResolution = yRes;
              ftSize = (*ftFace)->size;
          }
      }
  
      return !err;
  }
  
  
  unsigned int FTSize::CharSize() const
  {
      return size;
  }
  
  
  float FTSize::Ascender() const
  {
      return ftSize == 0 ? 0.0f : static_cast<float>(ftSize->metrics.ascender) / 64.0f;
  }
  
  
  float FTSize::Descender() const
  {
      return ftSize == 0 ? 0.0f : static_cast<float>(ftSize->metrics.descender) / 64.0f;
  }
  
  
  float FTSize::Height() const
  {
      if(0 == ftSize)
      {
          return 0.0f;
      }
  
      if(FT_IS_SCALABLE((*ftFace)))
      {
          return ((*ftFace)->bbox.yMax - (*ftFace)->bbox.yMin) * ((float)ftSize->metrics.y_ppem / (float)(*ftFace)->units_per_EM);
      }
      else
      {
          return static_cast<float>(ftSize->metrics.height) / 64.0f;
      }
  }
  
  
  float FTSize::Width() const
  {
      if(0 == ftSize)
      {
          return 0.0f;
      }
  
      if(FT_IS_SCALABLE((*ftFace)))
      {
          return ((*ftFace)->bbox.xMax - (*ftFace)->bbox.xMin) * (static_cast<float>(ftSize->metrics.x_ppem) / static_cast<float>((*ftFace)->units_per_EM));
      }
      else
      {
          return static_cast<float>(ftSize->metrics.max_advance) / 64.0f;
      }
  }
  
  
  float FTSize::Underline() const
  {
      return 0.0f;
  }