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SVGFEConvolveMatrix.h

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00001 /*
00002     Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org>
00003                   2004, 2005 Rob Buis <buis@kde.org>
00004                   2005 Eric Seidel <eric@webkit.org>
00005 
00006     This library is free software; you can redistribute it and/or
00007     modify it under the terms of the GNU Library General Public
00008     License as published by the Free Software Foundation; either
00009     version 2 of the License, or (at your option) any later version.
00010 
00011     This library is distributed in the hope that it will be useful,
00012     but WITHOUT ANY WARRANTY; without even the implied warranty of
00013     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014     Library General Public License for more details.
00015 
00016     You should have received a copy of the GNU Library General Public License
00017     aint with this library; see the file COPYING.LIB.  If not, write to
00018     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00019     Boston, MA 02110-1301, USA.
00020 */
00021 
00022 #ifndef SVGFEConvolveMatrix_h
00023 #define SVGFEConvolveMatrix_h
00024 
00025 #if ENABLE(SVG) && ENABLE(SVG_FILTERS)
00026 #include "SVGFilterEffect.h"
00027 
00028 namespace WebCore {
00029 
00030 enum SVGEdgeModeType {
00031     SVG_EDGEMODE_UNKNOWN   = 0,
00032     SVG_EDGEMODE_DUPLICATE = 1,
00033     SVG_EDGEMODE_WRAP      = 2,
00034     SVG_EDGEMODE_NONE      = 3
00035 };
00036 
00037 class SVGFEConvolveMatrix : public SVGFilterEffect {
00038 public:
00039     SVGFEConvolveMatrix(SVGResourceFilter*);
00040 
00041     FloatSize kernelSize() const;
00042     void setKernelSize(FloatSize);
00043 
00044     const Vector<float>& kernel() const;
00045     void setKernel(const Vector<float>&);
00046 
00047     float divisor() const;
00048     void setDivisor(float);
00049 
00050     float bias() const;
00051     void setBias(float);
00052 
00053     FloatSize targetOffset() const;
00054     void setTargetOffset(FloatSize);
00055 
00056     SVGEdgeModeType edgeMode() const;
00057     void setEdgeMode(SVGEdgeModeType);
00058 
00059     FloatPoint kernelUnitLength() const;
00060     void setKernelUnitLength(FloatPoint);
00061 
00062     bool preserveAlpha() const;
00063     void setPreserveAlpha(bool);
00064 
00065     virtual TextStream& externalRepresentation(TextStream&) const;
00066 
00067 private:
00068     FloatSize m_kernelSize;
00069     float m_divisor;
00070     float m_bias;
00071     FloatSize m_targetOffset;
00072     SVGEdgeModeType m_edgeMode;
00073     FloatPoint m_kernelUnitLength;
00074     bool m_preserveAlpha;
00075     Vector<float> m_kernelMatrix; // maybe should be a real matrix?
00076 };
00077 
00078 } // namespace WebCore
00079 
00080 #endif // ENABLE(SVG) && ENABLE(SVG_FILTERS)
00081 
00082 #endif // SVGFEConvolveMatrix_h

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