FEComponentTransfer.h [plain text]
#ifndef SVGFEComponentTransfer_h
#define SVGFEComponentTransfer_h
#if ENABLE(FILTERS)
#include "FilterEffect.h"
#include "Filter.h"
#include <wtf/Vector.h>
namespace WebCore {
enum ComponentTransferType {
FECOMPONENTTRANSFER_TYPE_UNKNOWN = 0,
FECOMPONENTTRANSFER_TYPE_IDENTITY = 1,
FECOMPONENTTRANSFER_TYPE_TABLE = 2,
FECOMPONENTTRANSFER_TYPE_DISCRETE = 3,
FECOMPONENTTRANSFER_TYPE_LINEAR = 4,
FECOMPONENTTRANSFER_TYPE_GAMMA = 5
};
struct ComponentTransferFunction {
ComponentTransferFunction()
: type(FECOMPONENTTRANSFER_TYPE_UNKNOWN)
, slope(0.0f)
, intercept(0.0f)
, amplitude(0.0f)
, exponent(0.0f)
, offset(0.0f)
{
}
ComponentTransferType type;
float slope;
float intercept;
float amplitude;
float exponent;
float offset;
Vector<float> tableValues;
};
class FEComponentTransfer : public FilterEffect {
public:
static PassRefPtr<FEComponentTransfer> create(FilterEffect*, const ComponentTransferFunction&,
const ComponentTransferFunction&, const ComponentTransferFunction&, const ComponentTransferFunction&);
ComponentTransferFunction redFunction() const;
void setRedFunction(const ComponentTransferFunction&);
ComponentTransferFunction greenFunction() const;
void setGreenFunction(const ComponentTransferFunction&);
ComponentTransferFunction blueFunction() const;
void setBlueFunction(const ComponentTransferFunction&);
ComponentTransferFunction alphaFunction() const;
void setAlphaFunction(const ComponentTransferFunction&);
virtual FloatRect uniteChildEffectSubregions(Filter* filter) { return calculateUnionOfChildEffectSubregions(filter, m_in.get()); }
void apply(Filter*);
void dump();
private:
FEComponentTransfer(FilterEffect*,const ComponentTransferFunction&, const ComponentTransferFunction&,
const ComponentTransferFunction&, const ComponentTransferFunction&);
RefPtr<FilterEffect> m_in;
ComponentTransferFunction m_redFunc;
ComponentTransferFunction m_greenFunc;
ComponentTransferFunction m_blueFunc;
ComponentTransferFunction m_alphaFunc;
};
}
#endif // ENABLE(FILTERS)
#endif // SVGFEComponentTransfer_h