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ImageWrapper.h
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ImageWrapper.h
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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 mozilla_image_ImageWrapper_h
#define mozilla_image_ImageWrapper_h
#include "mozilla/MemoryReporting.h"
#include "Image.h"
namespace mozilla {
namespace image {
/**
* Abstract superclass for Images that wrap other Images.
*/
class ImageWrapper : public Image
{
public:
NS_DECL_ISUPPORTS
NS_DECL_IMGICONTAINER
// Inherited methods from Image.
nsresult GetNativeSizes(nsTArray<gfx::IntSize>& aNativeSizes) const override;
size_t GetNativeSizesLength() const override;
virtual already_AddRefed<ProgressTracker> GetProgressTracker() override;
virtual size_t
SizeOfSourceWithComputedFallback(SizeOfState& aState) const override;
virtual void CollectSizeOfSurfaces(nsTArray<SurfaceMemoryCounter>& aCounters,
MallocSizeOf aMallocSizeOf) const override;
virtual void IncrementAnimationConsumers() override;
virtual void DecrementAnimationConsumers() override;
#ifdef DEBUG
virtual uint32_t GetAnimationConsumers() override;
#endif
virtual nsresult OnImageDataAvailable(nsIRequest* aRequest,
nsISupports* aContext,
nsIInputStream* aInStr,
uint64_t aSourceOffset,
uint32_t aCount) override;
virtual nsresult OnImageDataComplete(nsIRequest* aRequest,
nsISupports* aContext,
nsresult aStatus,
bool aLastPart) override;
virtual void OnSurfaceDiscarded(const SurfaceKey& aSurfaceKey) override;
virtual void SetInnerWindowID(uint64_t aInnerWindowId) override;
virtual uint64_t InnerWindowID() const override;
virtual bool HasError() override;
virtual void SetHasError() override;
nsIURI* GetURI() const override;
protected:
explicit ImageWrapper(Image* aInnerImage)
: mInnerImage(aInnerImage)
{
MOZ_ASSERT(aInnerImage, "Need an image to wrap");
}
virtual ~ImageWrapper() { }
/**
* Returns a weak reference to the inner image wrapped by this ImageWrapper.
*/
Image* InnerImage() const { return mInnerImage.get(); }
void SetInnerImage(Image* aInnerImage)
{
MOZ_ASSERT(aInnerImage, "Need an image to wrap");
mInnerImage = aInnerImage;
}
private:
RefPtr<Image> mInnerImage;
};
} // namespace image
} // namespace mozilla
#endif // mozilla_image_ImageWrapper_h