khtml/svg/graphics/filters/SVGFEConvolveMatrix.h

   1 /*
   2     Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org>
   3                   2004, 2005 Rob Buis <buis@kde.org>
   4                   2005 Eric Seidel <eric@webkit.org>
   5
   6     This library is free software; you can redistribute it and/or
   7     modify it under the terms of the GNU Library General Public
   8     License as published by the Free Software Foundation; either
   9     version 2 of the License, or (at your option) any later version.
  10
  11     This library is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14     Library General Public License for more details.
  15
  16     You should have received a copy of the GNU Library General Public License
  17     aint with this library; see the file COPYING.LIB.  If not, write to
  18     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  19     Boston, MA 02110-1301, USA.
  20 */
  21
  22 #ifndef SVGFEConvolveMatrix_h
  23 #define SVGFEConvolveMatrix_h
  24
  25 #if ENABLE(SVG) && ENABLE(SVG_FILTERS)
  26 #include "SVGFilterEffect.h"
  27
  28 namespace WebCore {
  29
  30 enum SVGEdgeModeType {
  31     SVG_EDGEMODE_UNKNOWN   = 0,
  32     SVG_EDGEMODE_DUPLICATE = 1,
  33     SVG_EDGEMODE_WRAP      = 2,
  34     SVG_EDGEMODE_NONE      = 3
  35 };
  36
  37 class SVGFEConvolveMatrix : public SVGFilterEffect {
  38 public:
  39     SVGFEConvolveMatrix(SVGResourceFilter*);
  40
  41     FloatSize kernelSize() const;
  42     void setKernelSize(FloatSize);
  43
  44     const Vector<float>& kernel() const;
  45     void setKernel(const Vector<float>&);
  46
  47     float divisor() const;
  48     void setDivisor(float);
  49
  50     float bias() const;
  51     void setBias(float);
  52
  53     FloatSize targetOffset() const;
  54     void setTargetOffset(FloatSize);
  55
  56     SVGEdgeModeType edgeMode() const;
  57     void setEdgeMode(SVGEdgeModeType);
  58
  59     FloatPoint kernelUnitLength() const;
  60     void setKernelUnitLength(FloatPoint);
  61
  62     bool preserveAlpha() const;
  63     void setPreserveAlpha(bool);
  64
  65     virtual TextStream& externalRepresentation(TextStream&) const;
  66
  67 private:
  68     FloatSize m_kernelSize;
  69     float m_divisor;
  70     float m_bias;
  71     FloatSize m_targetOffset;
  72     SVGEdgeModeType m_edgeMode;
  73     FloatPoint m_kernelUnitLength;
  74     bool m_preserveAlpha;
  75     Vector<float> m_kernelMatrix; // maybe should be a real matrix?
  76 };
  77
  78 } // namespace WebCore
  79
  80 #endif // ENABLE(SVG) && ENABLE(SVG_FILTERS)
  81
  82 #endif // SVGFEConvolveMatrix_h