michael@0: /*
michael@0:  * Copyright 2007 The Android Open Source Project
michael@0:  *
michael@0:  * Use of this source code is governed by a BSD-style license that can be
michael@0:  * found in the LICENSE file.
michael@0:  */
michael@0: 
michael@0: #ifndef SkPixelXorXfermode_DEFINED
michael@0: #define SkPixelXorXfermode_DEFINED
michael@0: 
michael@0: #include "SkXfermode.h"
michael@0: 
michael@0: /** SkPixelXorXfermode implements a simple pixel xor (op ^ src ^ dst).
michael@0:     This transformation does not follow premultiplied conventions, therefore
michael@0:     this proc *always* returns an opaque color (alpha == 255). Thus it is
michael@0:     not really usefull for operating on blended colors.
michael@0: */
michael@0: class SK_API SkPixelXorXfermode : public SkXfermode {
michael@0: public:
michael@0:     static SkPixelXorXfermode* Create(SkColor opColor) {
michael@0:         return SkNEW_ARGS(SkPixelXorXfermode, (opColor));
michael@0:     }
michael@0: 
michael@0:     SK_TO_STRING_OVERRIDE()
michael@0:     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkPixelXorXfermode)
michael@0: 
michael@0: protected:
michael@0:     SkPixelXorXfermode(SkReadBuffer& rb);
michael@0:     virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
michael@0: 
michael@0:     // override from SkXfermode
michael@0:     virtual SkPMColor xferColor(SkPMColor src, SkPMColor dst) const;
michael@0: 
michael@0: #ifdef SK_SUPPORT_LEGACY_PUBLICEFFECTCONSTRUCTORS
michael@0: public:
michael@0: #endif
michael@0:     SkPixelXorXfermode(SkColor opColor) : fOpColor(opColor) {}
michael@0: 
michael@0: private:
michael@0:     SkColor fOpColor;
michael@0: 
michael@0:     typedef SkXfermode INHERITED;
michael@0: };
michael@0: 
michael@0: #endif