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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 SkGrPixelRef_DEFINED
#define SkGrPixelRef_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:
SK_DECLARE_INST_COUNT(SkROLockPixelsPixelRef)
SkROLockPixelsPixelRef(const SkImageInfo&);
virtual ~SkROLockPixelsPixelRef();
protected:
bool onNewLockPixels(LockRec*) SK_OVERRIDE;
void onUnlockPixels() SK_OVERRIDE;
bool onLockPixelsAreWritable() const SK_OVERRIDE; // return false;
private:
SkBitmap fBitmap;
typedef SkPixelRef INHERITED;
};
/**
* PixelRef that wraps a GrSurface
*/
class SK_API SkGrPixelRef : public SkROLockPixelsPixelRef {
public:
SK_DECLARE_INST_COUNT(SkGrPixelRef)
/**
* Constructs a pixel ref around a GrSurface.
*/
SkGrPixelRef(const SkImageInfo&, GrSurface*);
virtual ~SkGrPixelRef();
// override from SkPixelRef
GrTexture* getTexture() SK_OVERRIDE;
protected:
// overrides from SkPixelRef
bool onReadPixels(SkBitmap* dst, const SkIRect* subset) SK_OVERRIDE;
virtual SkPixelRef* deepCopy(SkColorType, SkColorProfileType,
const SkIRect* subset) SK_OVERRIDE;
private:
GrSurface* fSurface;
typedef SkROLockPixelsPixelRef INHERITED;
};
#endif
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