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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef CANVASIMAGECACHE_H_
#define CANVASIMAGECACHE_H_
#include "mozilla/RefPtr.h"
#include "nsSize.h"
namespace mozilla {
namespace dom {
class Element;
class HTMLCanvasElement;
} // namespace dom
namespace gfx {
class SourceSurface;
} // namespace gfx
} // namespace mozilla
class imgIContainer;
namespace mozilla {
class CanvasImageCache {
typedef mozilla::gfx::SourceSurface SourceSurface;
public:
/**
* Notify that image element aImage was drawn to aCanvas element
* using the first frame of aRequest's image. The data for the surface is
* in aSurface, and the image size is in aSize.
*/
static void NotifyDrawImage(dom::Element* aImage,
dom::HTMLCanvasElement* aCanvas,
SourceSurface* aSource,
const gfx::IntSize& aSize,
bool aIsAccelerated);
/**
* Check whether aImage has recently been drawn any canvas. If we return
* a non-null surface, then the same image was recently drawn into a canvas.
*/
static SourceSurface* LookupAllCanvas(dom::Element* aImage,
bool aIsAccelerated);
/**
* Like the top above, but restricts the lookup to only aCanvas. This is
* required for CORS security.
*/
static SourceSurface* LookupCanvas(dom::Element* aImage,
dom::HTMLCanvasElement* aCanvas,
gfx::IntSize* aSizeOut,
bool aIsAccelerated);
};
} // namespace mozilla
#endif /* CANVASIMAGECACHE_H_ */
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