9fa60daad4
Refactoring pattern: 1. guard the existing constructor(readbuffer) with the legacy build-flag 2. If you are a instancable subclass, implement CreateProc(readbuffer) to create a new instances from the buffer params (or return NULL). If you're a shader subclass 1. You must read/write the local matrix if your class accepts that in its factory/constructor, else ignore it. R=robertphillips@google.com, mtklein@google.com, senorblanco@google.com, senorblanco@chromium.org, sugoi@chromium.org Author: reed@google.com Review URL: https://codereview.chromium.org/395603002
44 lines
1.2 KiB
C++
44 lines
1.2 KiB
C++
/*
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* Copyright 2007 The Android Open Source Project
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkPixelXorXfermode_DEFINED
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#define SkPixelXorXfermode_DEFINED
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#include "SkXfermode.h"
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/** SkPixelXorXfermode implements a simple pixel xor (op ^ src ^ dst).
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This transformation does not follow premultiplied conventions, therefore
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this proc *always* returns an opaque color (alpha == 255). Thus it is
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not really usefull for operating on blended colors.
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*/
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class SK_API SkPixelXorXfermode : public SkXfermode {
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public:
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static SkPixelXorXfermode* Create(SkColor opColor) {
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return SkNEW_ARGS(SkPixelXorXfermode, (opColor));
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}
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SK_TO_STRING_OVERRIDE()
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SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkPixelXorXfermode)
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protected:
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explicit SkPixelXorXfermode(SkColor opColor) : fOpColor(opColor) {}
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#ifdef SK_SUPPORT_LEGACY_DEEPFLATTENING
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explicit SkPixelXorXfermode(SkReadBuffer& rb);
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#endif
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virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
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// override from SkXfermode
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virtual SkPMColor xferColor(SkPMColor src, SkPMColor dst) const;
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private:
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SkColor fOpColor;
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typedef SkXfermode INHERITED;
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};
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#endif
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