1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/skia/trunk/include/gpu/SkGrPixelRef.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,68 @@
1.4 +/*
1.5 + * Copyright 2010 Google Inc.
1.6 + *
1.7 + * Use of this source code is governed by a BSD-style license that can be
1.8 + * found in the LICENSE file.
1.9 + */
1.10 +
1.11 +#ifndef SkGrPixelRef_DEFINED
1.12 +#define SkGrPixelRef_DEFINED
1.13 +
1.14 +#include "SkBitmap.h"
1.15 +#include "SkPixelRef.h"
1.16 +#include "GrTexture.h"
1.17 +#include "GrRenderTarget.h"
1.18 +
1.19 +
1.20 +/**
1.21 + * Common baseclass that implements onLockPixels() by calling onReadPixels().
1.22 + * Since it has a copy, it always returns false for onLockPixelsAreWritable().
1.23 + */
1.24 +class SK_API SkROLockPixelsPixelRef : public SkPixelRef {
1.25 +public:
1.26 + SK_DECLARE_INST_COUNT(SkROLockPixelsPixelRef)
1.27 + SkROLockPixelsPixelRef(const SkImageInfo&);
1.28 + virtual ~SkROLockPixelsPixelRef();
1.29 +
1.30 +protected:
1.31 + virtual bool onNewLockPixels(LockRec*) SK_OVERRIDE;
1.32 + virtual void onUnlockPixels() SK_OVERRIDE;
1.33 + virtual bool onLockPixelsAreWritable() const SK_OVERRIDE; // return false;
1.34 +
1.35 +private:
1.36 + SkBitmap fBitmap;
1.37 + typedef SkPixelRef INHERITED;
1.38 +};
1.39 +
1.40 +/**
1.41 + * PixelRef that wraps a GrSurface
1.42 + */
1.43 +class SK_API SkGrPixelRef : public SkROLockPixelsPixelRef {
1.44 +public:
1.45 + SK_DECLARE_INST_COUNT(SkGrPixelRef)
1.46 + /**
1.47 + * Constructs a pixel ref around a GrSurface. If the caller has locked the GrSurface in the
1.48 + * cache and would like the pixel ref to unlock it in its destructor then transferCacheLock
1.49 + * should be set to true.
1.50 + */
1.51 + SkGrPixelRef(const SkImageInfo&, GrSurface*, bool transferCacheLock = false);
1.52 + virtual ~SkGrPixelRef();
1.53 +
1.54 + // override from SkPixelRef
1.55 + virtual GrTexture* getTexture() SK_OVERRIDE;
1.56 +
1.57 + SK_DECLARE_UNFLATTENABLE_OBJECT()
1.58 +
1.59 +protected:
1.60 + // overrides from SkPixelRef
1.61 + virtual bool onReadPixels(SkBitmap* dst, const SkIRect* subset) SK_OVERRIDE;
1.62 + virtual SkPixelRef* deepCopy(SkBitmap::Config dstConfig, const SkIRect* subset) SK_OVERRIDE;
1.63 +
1.64 +private:
1.65 + GrSurface* fSurface;
1.66 + bool fUnlock; // if true the pixel ref owns a texture cache lock on fSurface
1.67 +
1.68 + typedef SkROLockPixelsPixelRef INHERITED;
1.69 +};
1.70 +
1.71 +#endif
