/*
    Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org>
                  2004, 2005 Rob Buis <buis@kde.org>
                  2005 Eric Seidel <eric@webkit.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
    aint 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 SVGFEDiffuseLighting_h
#define SVGFEDiffuseLighting_h

#if ENABLE(SVG) && ENABLE(SVG_FILTERS)
#include "Color.h"
#include "SVGFilterEffect.h"

namespace WebCore
{

class SVGLightSource;

class SVGFEDiffuseLighting : public SVGFilterEffect
{
public:
    SVGFEDiffuseLighting(SVGResourceFilter *);
    virtual ~SVGFEDiffuseLighting();

    Color lightingColor() const;
    void setLightingColor(const Color &);

    float surfaceScale() const;
    void setSurfaceScale(float);

    float diffuseConstant() const;
    void setDiffuseConstant(float);

    float kernelUnitLengthX() const;
    void setKernelUnitLengthX(float);

    float kernelUnitLengthY() const;
    void setKernelUnitLengthY(float);

    const SVGLightSource *lightSource() const;
    void setLightSource(SVGLightSource *);

    virtual TextStream &externalRepresentation(TextStream &) const;

#if PLATFORM(CI)
    virtual CIFilter *getCIFilter(const FloatRect &bbox) const;
#endif

private:
    Color m_lightingColor;
    float m_surfaceScale;
    float m_diffuseConstant;
    float m_kernelUnitLengthX;
    float m_kernelUnitLengthY;
    SVGLightSource *m_lightSource;
};

} // namespace WebCore

#endif // ENABLE(SVG) && ENABLE(SVG_FILTERS)

#endif // SVGFEDiffuseLighting_h
