Masayuki Nakano
976be8097e
This patch does not fix the methods in xslt and content sink because they require a lot of `MOZ_CAN_RUN_SCRIPT` but I think most of them do not make sense because working in a specific period. Differential Revision: https://phabricator.services.mozilla.com/D310971
154 lines
4.3 KiB
C++
154 lines
4.3 KiB
C++
/* 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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/* This class wraps an SVG document, for use by VectorImage objects. */
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#ifndef mozilla_image_SVGDocumentWrapper_h
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#define mozilla_image_SVGDocumentWrapper_h
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#include "Units.h"
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#include "nsCOMPtr.h"
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#include "nsIDocumentViewer.h"
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#include "nsIObserver.h"
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#include "nsIStreamListener.h"
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#include "nsSize.h"
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#include "nsWeakReference.h"
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class nsIRequest;
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class nsILoadGroup;
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class nsIFrame;
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namespace mozilla {
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class PresShell;
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namespace dom {
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class SVGSVGElement;
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class SVGDocument;
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} // namespace dom
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namespace image {
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class AutoRestoreSVGState;
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class SVGDocumentWrapper final : public nsIStreamListener,
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public nsIObserver,
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public nsSupportsWeakReference {
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public:
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SVGDocumentWrapper();
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NS_DECL_ISUPPORTS
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NS_DECL_NSISTREAMLISTENER
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NS_DECL_NSIREQUESTOBSERVER
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NS_DECL_NSIOBSERVER
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enum Dimension { eWidth, eHeight };
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/**
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* Returns the wrapped document, or nullptr on failure. (No AddRef.)
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*/
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mozilla::dom::SVGDocument* GetDocument() const;
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/**
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* Returns the root <svg> element for the wrapped document, or nullptr on
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* failure.
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*/
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mozilla::dom::SVGSVGElement* GetSVGRootElement() const;
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/**
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* Returns the root nsIFrame* for the wrapped document, or nullptr on failure.
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*
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* @return the root nsIFrame* for the wrapped document, or nullptr on failure.
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*/
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nsIFrame* GetRootLayoutFrame() const;
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/**
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* Returns the mozilla::PresShell for the wrapped document.
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*/
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mozilla::PresShell* GetPresShell() const { return mViewer->GetPresShell(); }
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/**
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* Modifier to update the viewport dimensions of the wrapped document. This
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* method performs a synchronous "FlushType::Layout" on the wrapped document,
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* since a viewport-change affects layout.
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*
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* @param aViewportSize The new viewport dimensions.
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*/
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void UpdateViewportBounds(const CSSSize& aViewportSize);
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/**
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* If an SVG image's helper document has a pending notification for an
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* override on the root node's "preserveAspectRatio" attribute, then this
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* method will flush that notification so that the image can paint correctly.
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* (First, though, it sets the mIgnoreInvalidation flag so that we won't
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* notify the image's observers and trigger unwanted repaint-requests.)
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*/
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void FlushImageTransformInvalidation();
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/**
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* Returns a bool indicating whether the document has any SMIL animations.
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*
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* @return true if the document has any SMIL animations. Else, false.
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*/
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bool IsAnimated() const;
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/**
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* Indicates whether we should currently ignore rendering invalidations sent
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* from the wrapped SVG doc.
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*
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* @return true if we should ignore invalidations sent from this SVG doc.
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*/
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bool ShouldIgnoreInvalidation() const { return mIgnoreInvalidation; }
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/**
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* Returns a bool indicating whether the document is currently drawing.
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*
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* @return true if the document is drawing. Else, false.
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*/
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bool IsDrawing() const { return mIsDrawing; }
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/**
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* Methods to control animation.
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*/
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void StartAnimation();
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void StopAnimation();
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void ResetAnimation();
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float GetCurrentTimeAsFloat() const;
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void SetCurrentTime(float aTime);
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void TickRefreshDriver();
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/**
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* Force a layout flush of the underlying SVG document.
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*/
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void FlushLayout();
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private:
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friend class AutoRestoreSVGState;
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MOZ_CAN_RUN_SCRIPT ~SVGDocumentWrapper();
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nsresult SetupViewer(nsIRequest* aRequest, nsIDocumentViewer** aViewer,
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nsILoadGroup** aLoadGroup);
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MOZ_CAN_RUN_SCRIPT void DestroyViewer();
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void RegisterForXPCOMShutdown();
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void UnregisterForXPCOMShutdown();
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nsCOMPtr<nsIDocumentViewer> mViewer;
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nsCOMPtr<nsILoadGroup> mLoadGroup;
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nsCOMPtr<nsIStreamListener> mListener;
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bool mIgnoreInvalidation;
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bool mRegisteredForXPCOMShutdown;
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bool mIsDrawing;
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};
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} // namespace image
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} // namespace mozilla
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/**
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* Casting SVGDocumentWrapper to nsISupports is ambiguous. This method handles
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* that.
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*/
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inline nsISupports* ToSupports(mozilla::image::SVGDocumentWrapper* p) {
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return NS_ISUPPORTS_CAST(nsSupportsWeakReference*, p);
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}
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#endif // mozilla_image_SVGDocumentWrapper_h
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