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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 {
SkROLockPixelsPixelRef(const SkImageInfo&);
virtual ~SkROLockPixelsPixelRef();
virtual bool onNewLockPixels(LockRec*) SK_OVERRIDE;
virtual void onUnlockPixels() SK_OVERRIDE;
virtual bool onLockPixelsAreWritable() const SK_OVERRIDE; // return false;
SkBitmap fBitmap;
typedef SkPixelRef INHERITED;
* PixelRef that wraps a GrSurface
class SK_API SkGrPixelRef : public SkROLockPixelsPixelRef {
* Constructs a pixel ref around a GrSurface. If the caller has locked the GrSurface in the
* cache and would like the pixel ref to unlock it in its destructor then transferCacheLock
* should be set to true.
SkGrPixelRef(const SkImageInfo&, GrSurface*, bool transferCacheLock = false);
virtual ~SkGrPixelRef();
// override from SkPixelRef
virtual GrTexture* getTexture() SK_OVERRIDE;
// overrides from SkPixelRef
virtual bool onReadPixels(SkBitmap* dst, const SkIRect* subset) SK_OVERRIDE;
virtual SkPixelRef* deepCopy(SkColorType, const SkIRect* subset) SK_OVERRIDE;
GrSurface* fSurface;
bool fUnlock; // if true the pixel ref owns a texture cache lock on fSurface
typedef SkROLockPixelsPixelRef INHERITED;