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/*
* Copyright 2010 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkGrTexturePixelRef_DEFINED
#define SkGrTexturePixelRef_DEFINED
#include "SkBitmap.h"
#include "SkPixelRef.h"
#include "GrTexture.h"
#include "GrRenderTarget.h"
/**
* Common baseclass that implements onLockPixels() by calling onReadPixels().
* Since it has a copy, it always returns false for onLockPixelsAreWritable().
*/
class SK_API SkROLockPixelsPixelRef : public SkPixelRef {
public:
SkROLockPixelsPixelRef();
virtual ~SkROLockPixelsPixelRef();
protected:
// override from SkPixelRef
virtual void* onLockPixels(SkColorTable** ptr);
virtual void onUnlockPixels();
virtual bool onLockPixelsAreWritable() const; // return false;
private:
SkBitmap fBitmap;
typedef SkPixelRef INHERITED;
};
/**
* PixelRef that wraps a GrTexture
*/
class SK_API SkGrTexturePixelRef : public SkROLockPixelsPixelRef {
public:
SkGrTexturePixelRef(GrTexture*);
virtual ~SkGrTexturePixelRef();
// override from SkPixelRef
virtual SkGpuTexture* getTexture();
protected:
// override from SkPixelRef
virtual bool onReadPixels(SkBitmap* dst, const SkIRect* subset);
// override from SkPixelRef
virtual SkPixelRef* deepCopy(SkBitmap::Config dstConfig) SK_OVERRIDE;
private:
GrTexture* fTexture;
typedef SkROLockPixelsPixelRef INHERITED;
};
/**
* PixelRef that wraps a GrRenderTarget
*/
class SK_API SkGrRenderTargetPixelRef : public SkROLockPixelsPixelRef {
public:
SkGrRenderTargetPixelRef(GrRenderTarget* rt);
virtual ~SkGrRenderTargetPixelRef();
// override from SkPixelRef
virtual SkGpuTexture* getTexture();
protected:
// override from SkPixelRef
virtual bool onReadPixels(SkBitmap* dst, const SkIRect* subset);
// override from SkPixelRef
virtual SkPixelRef* deepCopy(SkBitmap::Config dstConfig) SK_OVERRIDE;
private:
GrRenderTarget* fRenderTarget;
typedef SkROLockPixelsPixelRef INHERITED;
};
#endif
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