1 /* 2 * Copyright 2007 The Android Open Source Project 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #ifndef SkPixelXorXfermode_DEFINED 9 #define SkPixelXorXfermode_DEFINED 10 11 #include "SkXfermode.h" 12 13 /** SkPixelXorXfermode implements a simple pixel xor (op ^ src ^ dst). 14 This transformation does not follow premultiplied conventions, therefore 15 this proc *always* returns an opaque color (alpha == 255). Thus it is 16 not really usefull for operating on blended colors. 17 */ 18 class SK_API SkPixelXorXfermode : public SkXfermode { 19 public: 20 static SkPixelXorXfermode* Create(SkColor opColor) { 21 return SkNEW_ARGS(SkPixelXorXfermode, (opColor)); 22 } 23 24 SK_TO_STRING_OVERRIDE() 25 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkPixelXorXfermode) 26 27 protected: 28 explicit SkPixelXorXfermode(SkColor opColor) : fOpColor(opColor) {} 29 void flatten(SkWriteBuffer&) const override; 30 31 // override from SkXfermode 32 SkPMColor xferColor(SkPMColor src, SkPMColor dst) const override; 33 34 private: 35 SkColor fOpColor; 36 37 typedef SkXfermode INHERITED; 38 }; 39 40 #endif 41
