2 * Copyright 2007 The Android Open Source Project
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
8 #ifndef SkPixelXorXfermode_DEFINED
9 #define SkPixelXorXfermode_DEFINED
11 #include "SkXfermode.h"
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.
18 class SK_API SkPixelXorXfermode : public SkXfermode {
20 static SkPixelXorXfermode* Create(SkColor opColor) {
21 return SkNEW_ARGS(SkPixelXorXfermode, (opColor));
24 SK_TO_STRING_OVERRIDE()
25 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkPixelXorXfermode)
28 explicit SkPixelXorXfermode(SkColor opColor) : fOpColor(opColor) {}
29 void flatten(SkWriteBuffer&) const SK_OVERRIDE;
31 // override from SkXfermode
32 SkPMColor xferColor(SkPMColor src, SkPMColor dst) const SK_OVERRIDE;
37 typedef SkXfermode INHERITED;