FEComponentTransfer.h [plain text]
#ifndef FEComponentTransfer_h
#define FEComponentTransfer_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)
, intercept(0)
, amplitude(0)
, exponent(0)
, offset(0)
{
}
ComponentTransferType type;
float slope;
float intercept;
float amplitude;
float exponent;
float offset;
Vector<float> tableValues;
};
class FEComponentTransfer : public FilterEffect {
public:
static PassRefPtr<FEComponentTransfer> create(Filter*, const ComponentTransferFunction& redFunc, const ComponentTransferFunction& greenFunc,
const ComponentTransferFunction& blueFunc, const ComponentTransferFunction& alphaFunc);
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 void apply();
virtual void dump();
virtual TextStream& externalRepresentation(TextStream&, int indention) const;
private:
FEComponentTransfer(Filter*, const ComponentTransferFunction& redFunc, const ComponentTransferFunction& greenFunc,
const ComponentTransferFunction& blueFunc, const ComponentTransferFunction& alphaFunc);
ComponentTransferFunction m_redFunc;
ComponentTransferFunction m_greenFunc;
ComponentTransferFunction m_blueFunc;
ComponentTransferFunction m_alphaFunc;
};
}
#endif // ENABLE(FILTERS)
#endif // FEComponentTransfer_h