michael@0: #ifndef SkXfermode_proccoeff_DEFINED
michael@0: #define SkXfermode_proccoeff_DEFINED
michael@0: 
michael@0: #include "SkXfermode.h"
michael@0: #include "SkReadBuffer.h"
michael@0: #include "SkWriteBuffer.h"
michael@0: 
michael@0: struct ProcCoeff {
michael@0:     SkXfermodeProc      fProc;
michael@0:     SkXfermode::Coeff   fSC;
michael@0:     SkXfermode::Coeff   fDC;
michael@0: };
michael@0: 
michael@0: #define CANNOT_USE_COEFF    SkXfermode::Coeff(-1)
michael@0: 
michael@0: class SkProcCoeffXfermode : public SkProcXfermode {
michael@0: public:
michael@0:     static SkProcCoeffXfermode* Create(const ProcCoeff& rec, Mode mode) {
michael@0:         return SkNEW_ARGS(SkProcCoeffXfermode, (rec, mode));
michael@0:     }
michael@0: 
michael@0:     virtual bool asMode(Mode* mode) const SK_OVERRIDE;
michael@0: 
michael@0:     virtual bool asCoeff(Coeff* sc, Coeff* dc) const SK_OVERRIDE;
michael@0: 
michael@0: #if SK_SUPPORT_GPU
michael@0:     virtual bool asNewEffect(GrEffectRef** effect,
michael@0:                              GrTexture* background) const SK_OVERRIDE;
michael@0: #endif
michael@0: 
michael@0:     SK_TO_STRING_OVERRIDE()
michael@0:     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkProcCoeffXfermode)
michael@0: 
michael@0: protected:
michael@0:     SkProcCoeffXfermode(const ProcCoeff& rec, Mode mode)
michael@0:             : INHERITED(rec.fProc) {
michael@0:         fMode = mode;
michael@0:         // these may be valid, or may be CANNOT_USE_COEFF
michael@0:         fSrcCoeff = rec.fSC;
michael@0:         fDstCoeff = rec.fDC;
michael@0:     }
michael@0: 
michael@0:     SkProcCoeffXfermode(SkReadBuffer& buffer);
michael@0: 
michael@0:     virtual void flatten(SkWriteBuffer& buffer) const SK_OVERRIDE;
michael@0: 
michael@0:     Mode getMode() const {
michael@0:         return fMode;
michael@0:     }
michael@0: 
michael@0: private:
michael@0:     Mode    fMode;
michael@0:     Coeff   fSrcCoeff, fDstCoeff;
michael@0: 
michael@0:     typedef SkProcXfermode INHERITED;
michael@0: };
michael@0: 
michael@0: #endif // #ifndef SkXfermode_proccoeff_DEFINED