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#ifndef SkXfermode_proccoeff_DEFINED
#define SkXfermode_proccoeff_DEFINED
#include "SkXfermode.h"
#include "SkFlattenableBuffers.h"
struct ProcCoeff {
SkXfermodeProc fProc;
SkXfermode::Coeff fSC;
SkXfermode::Coeff fDC;
};
#define CANNOT_USE_COEFF SkXfermode::Coeff(-1)
extern const ProcCoeff gProcCoeffs[];
class SkProcCoeffXfermode : public SkProcXfermode {
public:
SkProcCoeffXfermode(const ProcCoeff& rec, Mode mode)
: INHERITED(rec.fProc) {
fMode = mode;
// these may be valid, or may be CANNOT_USE_COEFF
fSrcCoeff = rec.fSC;
fDstCoeff = rec.fDC;
}
virtual bool asMode(Mode* mode) const SK_OVERRIDE;
virtual bool asCoeff(Coeff* sc, Coeff* dc) const SK_OVERRIDE;
#if SK_SUPPORT_GPU
virtual bool asNewEffectOrCoeff(GrContext*,
GrEffectRef** effect,
Coeff* src,
Coeff* dst,
GrTexture* background) const SK_OVERRIDE;
#endif
SK_DEVELOPER_TO_STRING()
SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkProcCoeffXfermode)
protected:
SkProcCoeffXfermode(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) {
fMode = (SkXfermode::Mode)buffer.read32();
const ProcCoeff& rec = gProcCoeffs[fMode];
// these may be valid, or may be CANNOT_USE_COEFF
fSrcCoeff = rec.fSC;
fDstCoeff = rec.fDC;
// now update our function-ptr in the super class
this->INHERITED::setProc(rec.fProc);
}
virtual void flatten(SkFlattenableWriteBuffer& buffer) const SK_OVERRIDE;
private:
Mode fMode;
Coeff fSrcCoeff, fDstCoeff;
typedef SkProcXfermode INHERITED;
};
#endif // #ifndef SkXfermode_proccoeff_DEFINED
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