skia2/include/gpu/SkGrPixelRef.h
reed 9a9eae21ed change pixelref to not inherit from SkFlattenable
If I can "inline" MallocPixelRef unflatten, then I think we can delete this code. The only caller today should be unflattening in the legacy path for bitmaps.

R=robertphillips@google.com

Author: reed@google.com

Review URL: https://codereview.chromium.org/320873003
2014-07-07 14:32:06 -07:00

71 lines
2.0 KiB
C++

/*
* 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:
virtual bool onNewLockPixels(LockRec*) SK_OVERRIDE;
virtual void onUnlockPixels() SK_OVERRIDE;
virtual 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. 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;
#ifdef SK_SUPPORT_LEGACY_PIXELREF_UNFLATTENABLE
SK_DECLARE_UNFLATTENABLE_OBJECT()
#endif
protected:
// overrides from SkPixelRef
virtual bool onReadPixels(SkBitmap* dst, const SkIRect* subset) SK_OVERRIDE;
virtual SkPixelRef* deepCopy(SkColorType, const SkIRect* subset) SK_OVERRIDE;
private:
GrSurface* fSurface;
bool fUnlock; // if true the pixel ref owns a texture cache lock on fSurface
typedef SkROLockPixelsPixelRef INHERITED;
};
#endif