skia2/include/gpu/SkGrTexturePixelRef.h
djsollen@google.com 5370cd969d Consolidate PixelRef flattables with the standard impl
The flatten method on these functions can no longer be
const as SkFlattenables declaration is not const and 
would result in the const methods only being called when
the reference to the object was const.
Review URL: https://codereview.appspot.com/5941043

git-svn-id: http://skia.googlecode.com/svn/trunk@3533 2bbb7eff-a529-9590-31e7-b0007b416f81
2012-03-28 20:47:01 +00:00

92 lines
2.1 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 SkGrTexturePixelRef_DEFINED
#define SkGrTexturePixelRef_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:
SkROLockPixelsPixelRef();
virtual ~SkROLockPixelsPixelRef();
protected:
// override from SkPixelRef
virtual void* onLockPixels(SkColorTable** ptr);
virtual void onUnlockPixels();
virtual bool onLockPixelsAreWritable() const; // return false;
private:
SkBitmap fBitmap;
typedef SkPixelRef INHERITED;
};
/**
* PixelRef that wraps a GrTexture
*/
class SK_API SkGrTexturePixelRef : public SkROLockPixelsPixelRef {
public:
SkGrTexturePixelRef(GrTexture*);
virtual ~SkGrTexturePixelRef();
// override from SkPixelRef
virtual SkGpuTexture* getTexture();
SK_DECLARE_UNFLATTENABLE_OBJECT()
protected:
// override from SkPixelRef
virtual bool onReadPixels(SkBitmap* dst, const SkIRect* subset);
// override from SkPixelRef
virtual SkPixelRef* deepCopy(SkBitmap::Config dstConfig) SK_OVERRIDE;
private:
GrTexture* fTexture;
typedef SkROLockPixelsPixelRef INHERITED;
};
/**
* PixelRef that wraps a GrRenderTarget
*/
class SK_API SkGrRenderTargetPixelRef : public SkROLockPixelsPixelRef {
public:
SkGrRenderTargetPixelRef(GrRenderTarget* rt);
virtual ~SkGrRenderTargetPixelRef();
// override from SkPixelRef
virtual SkGpuTexture* getTexture();
SK_DECLARE_UNFLATTENABLE_OBJECT()
protected:
// override from SkPixelRef
virtual bool onReadPixels(SkBitmap* dst, const SkIRect* subset);
// override from SkPixelRef
virtual SkPixelRef* deepCopy(SkBitmap::Config dstConfig) SK_OVERRIDE;
private:
GrRenderTarget* fRenderTarget;
typedef SkROLockPixelsPixelRef INHERITED;
};
#endif