67 lines
1.9 KiB
C++
67 lines
1.9 KiB
C++
/*
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* Copyright 2010 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkGrPixelRef_DEFINED
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#define SkGrPixelRef_DEFINED
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#include "SkBitmap.h"
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#include "SkPixelRef.h"
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#include "GrTexture.h"
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#include "GrRenderTarget.h"
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/**
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* Common baseclass that implements onLockPixels() by calling onReadPixels().
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* Since it has a copy, it always returns false for onLockPixelsAreWritable().
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*/
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class SK_API SkROLockPixelsPixelRef : public SkPixelRef {
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public:
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SK_DECLARE_INST_COUNT(SkROLockPixelsPixelRef)
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SkROLockPixelsPixelRef(const SkImageInfo&);
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virtual ~SkROLockPixelsPixelRef();
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protected:
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virtual bool onNewLockPixels(LockRec*) SK_OVERRIDE;
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virtual void onUnlockPixels() SK_OVERRIDE;
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virtual bool onLockPixelsAreWritable() const SK_OVERRIDE; // return false;
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private:
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SkBitmap fBitmap;
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typedef SkPixelRef INHERITED;
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};
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/**
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* PixelRef that wraps a GrSurface
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*/
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class SK_API SkGrPixelRef : public SkROLockPixelsPixelRef {
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public:
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SK_DECLARE_INST_COUNT(SkGrPixelRef)
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/**
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* Constructs a pixel ref around a GrSurface. If the caller has locked the GrSurface in the
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* cache and would like the pixel ref to unlock it in its destructor then transferCacheLock
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* should be set to true.
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*/
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SkGrPixelRef(const SkImageInfo&, GrSurface*, bool transferCacheLock = false);
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virtual ~SkGrPixelRef();
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// override from SkPixelRef
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virtual GrTexture* getTexture() SK_OVERRIDE;
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protected:
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// overrides from SkPixelRef
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virtual bool onReadPixels(SkBitmap* dst, const SkIRect* subset) SK_OVERRIDE;
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virtual SkPixelRef* deepCopy(SkColorType, const SkIRect* subset) SK_OVERRIDE;
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private:
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GrSurface* fSurface;
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bool fUnlock; // if true the pixel ref owns a texture cache lock on fSurface
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typedef SkROLockPixelsPixelRef INHERITED;
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};
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#endif
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