skia2/include/effects/SkPixelXorXfermode.h
commit-bot@chromium.org 8b0e8ac5f5 Refactor read and write buffers.
Eliminates SkFlattenable{Read,Write}Buffer, promoting SkOrdered{Read,Write}Buffer
a step each in the hierarchy.

What used to be this:

SkFlattenableWriteBuffer -> SkOrderedWriteBuffer
SkFlattenableReadBuffer  -> SkOrderedReadBuffer
SkFlattenableReadBuffer  -> SkValidatingReadBuffer

is now

SkWriteBuffer
SkReadBuffer -> SkValidatingReadBuffer

Benefits:
  - code is simpler, names are less wordy
  - the generic SkFlattenableFooBuffer code in SkPaint was incorrect; removed
  - write buffers are completely devirtualized, important for record speed

This refactoring was mostly mechanical.  You aren't going to find anything
interesting in files with less than 10 lines changed.

BUG=skia:
R=reed@google.com, scroggo@google.com, djsollen@google.com, mtklein@google.com

Author: mtklein@chromium.org

Review URL: https://codereview.chromium.org/134163010

git-svn-id: http://skia.googlecode.com/svn/trunk@13245 2bbb7eff-a529-9590-31e7-b0007b416f81
2014-01-30 18:58:24 +00:00

39 lines
1.0 KiB
C++

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