SVGFEComponentTransfer.h [plain text]
#ifndef SVGFEComponentTransfer_h
#define SVGFEComponentTransfer_h
#if ENABLE(SVG) && ENABLE(SVG_FILTERS)
#include <wtf/Vector.h>
#include "SVGFilterEffect.h"
#include "SVGFEDisplacementMap.h"
#if PLATFORM(CI)
#ifdef __OBJC__
@class CIImage;
@class CIFilter;
#else
class CIImage;
class CIFilter;
#endif
#endif
namespace WebCore {
enum SVGComponentTransferType {
SVG_FECOMPONENTTRANSFER_TYPE_UNKNOWN = 0,
SVG_FECOMPONENTTRANSFER_TYPE_IDENTITY = 1,
SVG_FECOMPONENTTRANSFER_TYPE_TABLE = 2,
SVG_FECOMPONENTTRANSFER_TYPE_DISCRETE = 3,
SVG_FECOMPONENTTRANSFER_TYPE_LINEAR = 4,
SVG_FECOMPONENTTRANSFER_TYPE_GAMMA = 5
};
struct SVGComponentTransferFunction {
SVGComponentTransferFunction()
: type(SVG_FECOMPONENTTRANSFER_TYPE_UNKNOWN)
, slope(0.0f)
, intercept(0.0f)
, amplitude(0.0f)
, exponent(0.0f)
, offset(0.0f)
{
}
SVGComponentTransferType type;
float slope;
float intercept;
float amplitude;
float exponent;
float offset;
Vector<float> tableValues;
};
class SVGFEComponentTransfer : public SVGFilterEffect {
public:
SVGFEComponentTransfer(SVGResourceFilter*);
SVGComponentTransferFunction redFunction() const;
void setRedFunction(const SVGComponentTransferFunction&);
SVGComponentTransferFunction greenFunction() const;
void setGreenFunction(const SVGComponentTransferFunction&);
SVGComponentTransferFunction blueFunction() const;
void setBlueFunction(const SVGComponentTransferFunction&);
SVGComponentTransferFunction alphaFunction() const;
void setAlphaFunction(const SVGComponentTransferFunction&);
virtual TextStream& externalRepresentation(TextStream&) const;
#if PLATFORM(CI)
virtual CIFilter* getCIFilter(const FloatRect& bbox) const;
private:
CIFilter* getFunctionFilter(SVGChannelSelectorType, CIImage* inputImage) const;
#endif
private:
SVGComponentTransferFunction m_redFunc;
SVGComponentTransferFunction m_greenFunc;
SVGComponentTransferFunction m_blueFunc;
SVGComponentTransferFunction m_alphaFunc;
};
}
#endif // ENABLE(SVG) && ENABLE(SVG_FILTERS)
#endif // SVGFEComponentTransfer_h