mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-12-03 18:47:53 +00:00
0154638e9d
Moving mIsDrawing to SVGDocumentWrapper allows us to avoid depending on VectorImage in a future patch, and instead only keep a reference to SVGDocumentWrapper. This helps avoid a circular dependency. Differential Revision: https://phabricator.services.mozilla.com/D111903
158 lines
4.4 KiB
C++
158 lines
4.4 KiB
C++
/* -*- 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/. */
|
|
|
|
/* This class wraps an SVG document, for use by VectorImage objects. */
|
|
|
|
#ifndef mozilla_image_SVGDocumentWrapper_h
|
|
#define mozilla_image_SVGDocumentWrapper_h
|
|
|
|
#include "mozilla/Attributes.h"
|
|
|
|
#include "nsCOMPtr.h"
|
|
#include "nsIStreamListener.h"
|
|
#include "nsIObserver.h"
|
|
#include "nsIContentViewer.h"
|
|
#include "nsWeakReference.h"
|
|
#include "nsSize.h"
|
|
|
|
class nsIRequest;
|
|
class nsILoadGroup;
|
|
class nsIFrame;
|
|
|
|
#define OBSERVER_SVC_CID "@mozilla.org/observer-service;1"
|
|
|
|
namespace mozilla {
|
|
class PresShell;
|
|
namespace dom {
|
|
class SVGSVGElement;
|
|
class SVGDocument;
|
|
} // namespace dom
|
|
|
|
namespace image {
|
|
class AutoRestoreSVGState;
|
|
|
|
class SVGDocumentWrapper final : public nsIStreamListener,
|
|
public nsIObserver,
|
|
public nsSupportsWeakReference {
|
|
public:
|
|
SVGDocumentWrapper();
|
|
|
|
NS_DECL_ISUPPORTS
|
|
NS_DECL_NSISTREAMLISTENER
|
|
NS_DECL_NSIREQUESTOBSERVER
|
|
NS_DECL_NSIOBSERVER
|
|
|
|
enum Dimension { eWidth, eHeight };
|
|
|
|
/**
|
|
* Returns the wrapped document, or nullptr on failure. (No AddRef.)
|
|
*/
|
|
mozilla::dom::SVGDocument* GetDocument();
|
|
|
|
/**
|
|
* Returns the root <svg> element for the wrapped document, or nullptr on
|
|
* failure.
|
|
*/
|
|
mozilla::dom::SVGSVGElement* GetRootSVGElem();
|
|
|
|
/**
|
|
* Returns the root nsIFrame* for the wrapped document, or nullptr on failure.
|
|
*
|
|
* @return the root nsIFrame* for the wrapped document, or nullptr on failure.
|
|
*/
|
|
nsIFrame* GetRootLayoutFrame();
|
|
|
|
/**
|
|
* Returns the mozilla::PresShell for the wrapped document.
|
|
*/
|
|
inline mozilla::PresShell* GetPresShell() { return mViewer->GetPresShell(); }
|
|
|
|
/**
|
|
* Modifier to update the viewport dimensions of the wrapped document. This
|
|
* method performs a synchronous "FlushType::Layout" on the wrapped document,
|
|
* since a viewport-change affects layout.
|
|
*
|
|
* @param aViewportSize The new viewport dimensions.
|
|
*/
|
|
void UpdateViewportBounds(const nsIntSize& aViewportSize);
|
|
|
|
/**
|
|
* If an SVG image's helper document has a pending notification for an
|
|
* override on the root node's "preserveAspectRatio" attribute, then this
|
|
* method will flush that notification so that the image can paint correctly.
|
|
* (First, though, it sets the mIgnoreInvalidation flag so that we won't
|
|
* notify the image's observers and trigger unwanted repaint-requests.)
|
|
*/
|
|
void FlushImageTransformInvalidation();
|
|
|
|
/**
|
|
* Returns a bool indicating whether the document has any SMIL animations.
|
|
*
|
|
* @return true if the document has any SMIL animations. Else, false.
|
|
*/
|
|
bool IsAnimated();
|
|
|
|
/**
|
|
* Indicates whether we should currently ignore rendering invalidations sent
|
|
* from the wrapped SVG doc.
|
|
*
|
|
* @return true if we should ignore invalidations sent from this SVG doc.
|
|
*/
|
|
bool ShouldIgnoreInvalidation() { return mIgnoreInvalidation; }
|
|
|
|
/**
|
|
* Returns a bool indicating whether the document is currently drawing.
|
|
*
|
|
* @return true if the document is drawing. Else, false.
|
|
*/
|
|
bool IsDrawing() const { return mIsDrawing; }
|
|
|
|
/**
|
|
* Methods to control animation.
|
|
*/
|
|
void StartAnimation();
|
|
void StopAnimation();
|
|
void ResetAnimation();
|
|
float GetCurrentTimeAsFloat();
|
|
void SetCurrentTime(float aTime);
|
|
void TickRefreshDriver();
|
|
|
|
/**
|
|
* Force a layout flush of the underlying SVG document.
|
|
*/
|
|
void FlushLayout();
|
|
|
|
private:
|
|
friend class AutoRestoreSVGState;
|
|
|
|
~SVGDocumentWrapper();
|
|
|
|
nsresult SetupViewer(nsIRequest* aRequest, nsIContentViewer** aViewer,
|
|
nsILoadGroup** aLoadGroup);
|
|
void DestroyViewer();
|
|
void RegisterForXPCOMShutdown();
|
|
void UnregisterForXPCOMShutdown();
|
|
|
|
nsCOMPtr<nsIContentViewer> mViewer;
|
|
nsCOMPtr<nsILoadGroup> mLoadGroup;
|
|
nsCOMPtr<nsIStreamListener> mListener;
|
|
bool mIgnoreInvalidation;
|
|
bool mRegisteredForXPCOMShutdown;
|
|
bool mIsDrawing;
|
|
};
|
|
|
|
} // namespace image
|
|
} // namespace mozilla
|
|
|
|
/**
|
|
* Casting SVGDocumentWrapper to nsISupports is ambiguous. This method handles
|
|
* that.
|
|
*/
|
|
inline nsISupports* ToSupports(mozilla::image::SVGDocumentWrapper* p) {
|
|
return NS_ISUPPORTS_CAST(nsSupportsWeakReference*, p);
|
|
}
|
|
|
|
#endif // mozilla_image_SVGDocumentWrapper_h
|