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/*
* Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
* Copyright (C) 2005 Eric Seidel <eric@webkit.org>
* Copyright (C) 2010 Zoltan Herczeg <zherczeg@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
* 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 SVGFEConvolveMatrix_h
#define SVGFEConvolveMatrix_h
#if ENABLE(SVG) && ENABLE(FILTERS)
#include "FilterEffect.h"
#include "FloatPoint.h"
#include "FloatSize.h"
#include "Filter.h"
#include <wtf/AlwaysInline.h>
#include <wtf/Vector.h>
namespace WebCore {
enum EdgeModeType {
EDGEMODE_UNKNOWN = 0,
EDGEMODE_DUPLICATE = 1,
EDGEMODE_WRAP = 2,
EDGEMODE_NONE = 3
};
class CanvasPixelArray;
class FEConvolveMatrix : public FilterEffect {
public:
static PassRefPtr<FEConvolveMatrix> create(const IntSize&,
float, float, const IntPoint&, EdgeModeType, const FloatPoint&,
bool, const Vector<float>&);
IntSize kernelSize() const;
void setKernelSize(IntSize);
const Vector<float>& kernel() const;
void setKernel(const Vector<float>&);
float divisor() const;
void setDivisor(float);
float bias() const;
void setBias(float);
IntPoint targetOffset() const;
void setTargetOffset(IntPoint);
EdgeModeType edgeMode() const;
void setEdgeMode(EdgeModeType);
FloatPoint kernelUnitLength() const;
void setKernelUnitLength(FloatPoint);
bool preserveAlpha() const;
void setPreserveAlpha(bool);
void apply(Filter*);
void dump();
TextStream& externalRepresentation(TextStream&, int indent) const;
private:
FEConvolveMatrix(const IntSize&, float, float,
const IntPoint&, EdgeModeType, const FloatPoint&, bool, const Vector<float>&);
struct PaintingData {
CanvasPixelArray* srcPixelArray;
CanvasPixelArray* dstPixelArray;
int width;
int height;
float bias;
};
template<bool preserveAlphaValues>
ALWAYS_INLINE void fastSetInteriorPixels(PaintingData&, int clipRight, int clipBottom);
ALWAYS_INLINE int getPixelValue(PaintingData&, int x, int y);
template<bool preserveAlphaValues>
void fastSetOuterPixels(PaintingData&, int x1, int y1, int x2, int y2);
// Wrapper functions
ALWAYS_INLINE void setInteriorPixels(PaintingData& paintingData, int clipRight, int clipBottom);
ALWAYS_INLINE void setOuterPixels(PaintingData& paintingData, int x1, int y1, int x2, int y2);
IntSize m_kernelSize;
float m_divisor;
float m_bias;
IntPoint m_targetOffset;
EdgeModeType m_edgeMode;
FloatPoint m_kernelUnitLength;
bool m_preserveAlpha;
Vector<float> m_kernelMatrix;
};
} // namespace WebCore
#endif // ENABLE(SVG) && ENABLE(FILTERS)
#endif // SVGFEConvolveMatrix_h
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