text: /*
   Copyright (C) 2007 Eric Seidel <eric@webkit.org>
   
   This file is part of the WebKit project
   
   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.
   
   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.
   
   You should have received a copy of the GNU Library General Public License
   along with this library; see the file COPYING.LIB.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
   Boston, MA 02110-1301, USA.
   */
  
  #ifndef ColorDistance_h
  #define ColorDistance_h
  #if ENABLE(SVG)
  
  namespace WebCore {
      
      class Color;
  
      class ColorDistance {
      public:
          ColorDistance();
          ColorDistance(const Color& fromColor, const Color& toColor);
          ColorDistance(int redDiff, int blueDiff, int greenDiff);
          
          ColorDistance scaledDistance(float scaleFactor) const;
          Color addToColorAndClamp(const Color&) const;
          
          static Color addColorsAndClamp(const Color&, const Color&);
          
          bool isZero() const;
          
          float distance() const;
          
      private:
          short m_redDiff;
          short m_greenDiff;
          short m_blueDiff;
      };
  }
  
  #endif // ENABLE(SVG)
  #endif // ColorDistance_h
  