1 files changed, 118 insertions, 0 deletions
diff --git a/WebCore/platform/graphics/filters/FEConvolveMatrix.h b/WebCore/platform/graphics/filters/FEConvolveMatrix.h
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+++ b/WebCore/platform/graphics/filters/FEConvolveMatrix.h
@@ -0,0 +1,118 @@
+/*
+ * 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 FEConvolveMatrix_h
+#define FEConvolveMatrix_h
+
+#if 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);
+
+    virtual void apply(Filter*);
+    virtual void dump();
+
+    virtual TextStream& externalRepresentation(TextStream&, int indention) 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(FILTERS)
+
+#endif // FEConvolveMatrix_h