/*

 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