FEConvolveMatrix.h [plain text]
#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(Filter*, const IntSize&,
float, float, const IntPoint&, EdgeModeType, const FloatPoint&,
bool, const Vector<float>&);
IntSize kernelSize() const;
void setKernelSize(const IntSize&);
const Vector<float>& kernel() const;
void setKernel(const Vector<float>&);
float divisor() const;
bool setDivisor(float);
float bias() const;
bool setBias(float);
IntPoint targetOffset() const;
bool setTargetOffset(const IntPoint&);
EdgeModeType edgeMode() const;
bool setEdgeMode(EdgeModeType);
FloatPoint kernelUnitLength() const;
bool setKernelUnitLength(const FloatPoint&);
bool preserveAlpha() const;
bool setPreserveAlpha(bool);
virtual void apply();
virtual void dump();
virtual void determineAbsolutePaintRect() { setAbsolutePaintRect(enclosingIntRect(maxEffectRect())); }
virtual TextStream& externalRepresentation(TextStream&, int indention) const;
private:
FEConvolveMatrix(Filter*, const IntSize&, float, float,
const IntPoint&, EdgeModeType, const FloatPoint&, bool, const Vector<float>&);
struct PaintingData {
ByteArray* srcPixelArray;
ByteArray* 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);
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;
};
}
#endif // ENABLE(FILTERS)
#endif // FEConvolveMatrix_h