/*

    Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>

                  2004, 2005 Rob Buis <buis@kde.org>

    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 SVGTransform_h

#define SVGTransform_h

#if ENABLE(SVG)

#include "AffineTransform.h"

#include "FloatPoint.h"

#include "SVGNames.h"

namespace WebCore {

    class FloatSize;

    class SVGTransform {

    public:

        enum SVGTransformType {

            SVG_TRANSFORM_UNKNOWN           = 0,

            SVG_TRANSFORM_MATRIX            = 1,

            SVG_TRANSFORM_TRANSLATE         = 2,

            SVG_TRANSFORM_SCALE             = 3,

            SVG_TRANSFORM_ROTATE            = 4,

            SVG_TRANSFORM_SKEWX             = 5,

            SVG_TRANSFORM_SKEWY             = 6

        };

        SVGTransform();

        SVGTransform(SVGTransformType);

        explicit SVGTransform(const AffineTransform&);

        virtual ~SVGTransform();

        SVGTransformType type() const;

        AffineTransform matrix() const;

        float angle() const;

        FloatPoint rotationCenter() const;

        void setMatrix(AffineTransform);

        void setTranslate(float tx, float ty);

        void setScale(float sx, float sy);

        void setRotate(float angle, float cx, float cy);

        void setSkewX(float angle);

        void setSkewY(float angle);

        // Internal use only (animation system)

        FloatPoint translate() const;

        FloatSize scale() const;

        bool isValid();

    private:

        SVGTransformType m_type;

        float m_angle;

        FloatPoint m_center;

        AffineTransform m_matrix;

    };

    inline bool operator==(const SVGTransform& a, const SVGTransform& b)

    {

        return a.type() == b.type() && a.angle() == b.angle() && a.matrix() == b.matrix();

    }

    inline bool operator!=(const SVGTransform& a, const SVGTransform& b)

    {

        return !(a == b);

    }

} // namespace WebCore

#endif // ENABLE(SVG)

#endif