/* -*- 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. virtual already_AddRefed<ProgressTracker> GetProgressTracker() override; virtual size_t SizeOfSourceWithComputedFallback(MallocSizeOf aMallocSizeOf) 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() override; virtual void SetInnerWindowID(uint64_t aInnerWindowId) override; virtual uint64_t InnerWindowID() const override; virtual bool HasError() override; virtual void SetHasError() override; virtual ImageURL* GetURI() 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