136 lines
4.8 KiB
C++
136 lines
4.8 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_image_VectorImage_h
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#define mozilla_image_VectorImage_h
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#include "Image.h"
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#include "nsIStreamListener.h"
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#include "mozilla/MemoryReporting.h"
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class nsIRequest;
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class gfxDrawable;
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namespace mozilla {
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namespace image {
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struct SVGDrawingParameters;
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class SVGDocumentWrapper;
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class SVGRootRenderingObserver;
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class SVGLoadEventListener;
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class SVGParseCompleteListener;
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class VectorImage final : public ImageResource,
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public nsIStreamListener
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{
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_NSIREQUESTOBSERVER
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NS_DECL_NSISTREAMLISTENER
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NS_DECL_IMGICONTAINER
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// (no public constructor - use ImageFactory)
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// Methods inherited from Image
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virtual size_t SizeOfSourceWithComputedFallback(MallocSizeOf aMallocSizeOf)
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const override;
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virtual void CollectSizeOfSurfaces(nsTArray<SurfaceMemoryCounter>& aCounters,
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MallocSizeOf aMallocSizeOf) const override;
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virtual nsresult OnImageDataAvailable(nsIRequest* aRequest,
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nsISupports* aContext,
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nsIInputStream* aInStr,
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uint64_t aSourceOffset,
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uint32_t aCount) override;
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virtual nsresult OnImageDataComplete(nsIRequest* aRequest,
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nsISupports* aContext,
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nsresult aResult,
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bool aLastPart) override;
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void OnSurfaceDiscarded() override;
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/**
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* Callback for SVGRootRenderingObserver.
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*
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* This just sets a dirty flag that we check in VectorImage::RequestRefresh,
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* which is called under the ticks of the refresh driver of any observing
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* documents that we may have. Only then (after all animations in this image
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* have been updated) do we send out "frame changed" notifications,
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*/
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void InvalidateObserversOnNextRefreshDriverTick();
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// Callback for SVGParseCompleteListener.
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void OnSVGDocumentParsed();
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// Callbacks for SVGLoadEventListener.
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void OnSVGDocumentLoaded();
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void OnSVGDocumentError();
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virtual void ReportUseCounters() override;
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protected:
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explicit VectorImage(ImageURL* aURI = nullptr);
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virtual ~VectorImage();
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virtual nsresult StartAnimation() override;
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virtual nsresult StopAnimation() override;
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virtual bool ShouldAnimate() override;
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void CreateSurfaceAndShow(const SVGDrawingParameters& aParams);
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void Show(gfxDrawable* aDrawable, const SVGDrawingParameters& aParams);
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private:
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nsresult Init(const char* aMimeType, uint32_t aFlags);
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/**
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* In catastrophic circumstances like a GPU driver crash, we may lose our
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* surfaces even if they're locked. RecoverFromLossOfSurfaces discards all
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* existing surfaces, allowing us to recover.
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*/
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void RecoverFromLossOfSurfaces();
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void CancelAllListeners();
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void SendInvalidationNotifications();
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RefPtr<SVGDocumentWrapper> mSVGDocumentWrapper;
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RefPtr<SVGRootRenderingObserver> mRenderingObserver;
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RefPtr<SVGLoadEventListener> mLoadEventListener;
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RefPtr<SVGParseCompleteListener> mParseCompleteListener;
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/// Count of locks on this image (roughly correlated to visible instances).
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uint32_t mLockCount;
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// Stored result from the Necko load of the image, which we save in
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// OnImageDataComplete if the underlying SVG document isn't loaded. If we save
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// this, we actually notify this progress (and clear this value) in
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// OnSVGDocumentLoaded or OnSVGDocumentError.
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Maybe<Progress> mLoadProgress;
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bool mIsInitialized; // Have we been initialized?
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bool mDiscardable; // Are we discardable?
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bool mIsFullyLoaded; // Has the SVG document finished
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// loading?
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bool mIsDrawing; // Are we currently drawing?
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bool mHaveAnimations; // Is our SVG content SMIL-animated?
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// (Only set after mIsFullyLoaded.)
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bool mHasPendingInvalidation; // Invalidate observers next refresh
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// driver tick.
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friend class ImageFactory;
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};
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inline NS_IMETHODIMP VectorImage::GetAnimationMode(uint16_t* aAnimationMode) {
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return GetAnimationModeInternal(aAnimationMode);
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}
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inline NS_IMETHODIMP VectorImage::SetAnimationMode(uint16_t aAnimationMode) {
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return SetAnimationModeInternal(aAnimationMode);
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}
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} // namespace image
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} // namespace mozilla
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#endif // mozilla_image_VectorImage_h
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