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/*
* Copyright 2012 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 SkBlendImageFilter_DEFINED
#define SkBlendImageFilter_DEFINED
#include "SkImageFilter.h"
#include "SkBitmap.h"
class SK_API SkBlendImageFilter : public SkImageFilter {
public:
enum Mode {
kNormal_Mode,
kMultiply_Mode,
kScreen_Mode,
kDarken_Mode,
kLighten_Mode,
};
SkBlendImageFilter(Mode mode, SkImageFilter* background, SkImageFilter* foreground = NULL);
~SkBlendImageFilter();
SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkBlendImageFilter)
virtual bool onFilterImage(Proxy* proxy,
const SkBitmap& src,
const SkMatrix& ctm,
SkBitmap* dst,
SkIPoint* offset) SK_OVERRIDE;
#if SK_SUPPORT_GPU
virtual bool canFilterImageGPU() const SK_OVERRIDE { return true; }
virtual GrTexture* onFilterImageGPU(Proxy* proxy, GrTexture* src, const SkRect& rect) SK_OVERRIDE;
#endif
protected:
explicit SkBlendImageFilter(SkFlattenableReadBuffer& buffer);
virtual void flatten(SkFlattenableWriteBuffer&) const SK_OVERRIDE;
private:
Mode fMode;
SkImageFilter* fBackground;
SkImageFilter* fForeground;
typedef SkImageFilter INHERITED;
};
#endif
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