mirror of
https://github.com/classilla/tenfourfox.git
synced 2024-08-15 02:29:04 +00:00
1297 lines
37 KiB
C++
1297 lines
37 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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#include "VectorImage.h"
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#include "gfx2DGlue.h"
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#include "gfxContext.h"
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#include "gfxDrawable.h"
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#include "gfxPlatform.h"
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#include "gfxUtils.h"
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#include "imgFrame.h"
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#include "mozilla/AutoRestore.h"
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#include "mozilla/MemoryReporting.h"
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#include "mozilla/dom/SVGSVGElement.h"
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#include "mozilla/gfx/2D.h"
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#include "mozilla/RefPtr.h"
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#include "nsIDOMEvent.h"
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#include "nsIPresShell.h"
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#include "nsIStreamListener.h"
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#include "nsMimeTypes.h"
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#include "nsPresContext.h"
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#include "nsRect.h"
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#include "nsString.h"
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#include "nsStubDocumentObserver.h"
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#include "nsSVGEffects.h" // for nsSVGRenderingObserver
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#include "nsWindowMemoryReporter.h"
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#include "ImageRegion.h"
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#include "LookupResult.h"
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#include "Orientation.h"
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#include "SVGDocumentWrapper.h"
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#include "nsIDOMEventListener.h"
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#include "SurfaceCache.h"
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#include "nsDocument.h"
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// undef the GetCurrentTime macro defined in WinBase.h from the MS Platform SDK
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#undef GetCurrentTime
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namespace mozilla {
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using namespace dom;
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using namespace gfx;
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using namespace layers;
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namespace image {
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// Helper-class: SVGRootRenderingObserver
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class SVGRootRenderingObserver final : public nsSVGRenderingObserver {
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public:
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NS_DECL_ISUPPORTS
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SVGRootRenderingObserver(SVGDocumentWrapper* aDocWrapper,
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VectorImage* aVectorImage)
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: nsSVGRenderingObserver()
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, mDocWrapper(aDocWrapper)
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, mVectorImage(aVectorImage)
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, mHonoringInvalidations(true)
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{
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MOZ_ASSERT(mDocWrapper, "Need a non-null SVG document wrapper");
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MOZ_ASSERT(mVectorImage, "Need a non-null VectorImage");
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StartListening();
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Element* elem = GetTarget();
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MOZ_ASSERT(elem, "no root SVG node for us to observe");
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nsSVGEffects::AddRenderingObserver(elem, this);
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mInObserverList = true;
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}
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void ResumeHonoringInvalidations()
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{
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mHonoringInvalidations = true;
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}
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protected:
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virtual ~SVGRootRenderingObserver()
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{
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StopListening();
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}
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virtual Element* GetTarget() override
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{
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return mDocWrapper->GetRootSVGElem();
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}
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virtual void DoUpdate() override
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{
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Element* elem = GetTarget();
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MOZ_ASSERT(elem, "missing root SVG node");
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if (mHonoringInvalidations && !mDocWrapper->ShouldIgnoreInvalidation()) {
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nsIFrame* frame = elem->GetPrimaryFrame();
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if (!frame || frame->PresContext()->PresShell()->IsDestroying()) {
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// We're being destroyed. Bail out.
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return;
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}
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// Ignore further invalidations until we draw.
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mHonoringInvalidations = false;
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mVectorImage->InvalidateObserversOnNextRefreshDriverTick();
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}
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// Our caller might've removed us from rendering-observer list.
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// Add ourselves back!
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if (!mInObserverList) {
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nsSVGEffects::AddRenderingObserver(elem, this);
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mInObserverList = true;
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}
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}
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// Private data
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const RefPtr<SVGDocumentWrapper> mDocWrapper;
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VectorImage* const mVectorImage; // Raw pointer because it owns me.
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bool mHonoringInvalidations;
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};
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NS_IMPL_ISUPPORTS(SVGRootRenderingObserver, nsIMutationObserver)
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class SVGParseCompleteListener final : public nsStubDocumentObserver {
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public:
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NS_DECL_ISUPPORTS
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SVGParseCompleteListener(nsIDocument* aDocument,
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VectorImage* aImage)
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: mDocument(aDocument)
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, mImage(aImage)
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{
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MOZ_ASSERT(mDocument, "Need an SVG document");
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MOZ_ASSERT(mImage, "Need an image");
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mDocument->AddObserver(this);
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}
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private:
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~SVGParseCompleteListener()
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{
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if (mDocument) {
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// The document must have been destroyed before we got our event.
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// Otherwise this can't happen, since documents hold strong references to
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// their observers.
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Cancel();
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}
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}
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public:
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void EndLoad(nsIDocument* aDocument) override
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{
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MOZ_ASSERT(aDocument == mDocument, "Got EndLoad for wrong document?");
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// OnSVGDocumentParsed will release our owner's reference to us, so ensure
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// we stick around long enough to complete our work.
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RefPtr<SVGParseCompleteListener> kungFuDeathGroup(this);
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mImage->OnSVGDocumentParsed();
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}
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void Cancel()
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{
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MOZ_ASSERT(mDocument, "Duplicate call to Cancel");
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if (mDocument) {
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mDocument->RemoveObserver(this);
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mDocument = nullptr;
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}
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}
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private:
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nsCOMPtr<nsIDocument> mDocument;
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VectorImage* const mImage; // Raw pointer to owner.
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};
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NS_IMPL_ISUPPORTS(SVGParseCompleteListener, nsIDocumentObserver)
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class SVGLoadEventListener final : public nsIDOMEventListener {
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public:
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NS_DECL_ISUPPORTS
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SVGLoadEventListener(nsIDocument* aDocument,
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VectorImage* aImage)
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: mDocument(aDocument)
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, mImage(aImage)
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{
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MOZ_ASSERT(mDocument, "Need an SVG document");
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MOZ_ASSERT(mImage, "Need an image");
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mDocument->AddEventListener(NS_LITERAL_STRING("MozSVGAsImageDocumentLoad"),
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this, true, false);
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mDocument->AddEventListener(NS_LITERAL_STRING("SVGAbort"), this, true,
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false);
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mDocument->AddEventListener(NS_LITERAL_STRING("SVGError"), this, true,
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false);
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}
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private:
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~SVGLoadEventListener()
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{
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if (mDocument) {
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// The document must have been destroyed before we got our event.
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// Otherwise this can't happen, since documents hold strong references to
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// their observers.
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Cancel();
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}
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}
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public:
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NS_IMETHOD HandleEvent(nsIDOMEvent* aEvent) override
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{
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MOZ_ASSERT(mDocument, "Need an SVG document. Received multiple events?");
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// OnSVGDocumentLoaded/OnSVGDocumentError will release our owner's reference
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// to us, so ensure we stick around long enough to complete our work.
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RefPtr<SVGLoadEventListener> kungFuDeathGroup(this);
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nsAutoString eventType;
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aEvent->GetType(eventType);
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MOZ_ASSERT(eventType.EqualsLiteral("MozSVGAsImageDocumentLoad") ||
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eventType.EqualsLiteral("SVGAbort") ||
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eventType.EqualsLiteral("SVGError"),
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"Received unexpected event");
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if (eventType.EqualsLiteral("MozSVGAsImageDocumentLoad")) {
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mImage->OnSVGDocumentLoaded();
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} else {
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mImage->OnSVGDocumentError();
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}
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return NS_OK;
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}
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void Cancel()
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{
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MOZ_ASSERT(mDocument, "Duplicate call to Cancel");
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if (mDocument) {
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mDocument
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->RemoveEventListener(NS_LITERAL_STRING("MozSVGAsImageDocumentLoad"),
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this, true);
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mDocument->RemoveEventListener(NS_LITERAL_STRING("SVGAbort"), this, true);
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mDocument->RemoveEventListener(NS_LITERAL_STRING("SVGError"), this, true);
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mDocument = nullptr;
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}
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}
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private:
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nsCOMPtr<nsIDocument> mDocument;
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VectorImage* const mImage; // Raw pointer to owner.
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};
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NS_IMPL_ISUPPORTS(SVGLoadEventListener, nsIDOMEventListener)
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// Helper-class: SVGDrawingCallback
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class SVGDrawingCallback : public gfxDrawingCallback {
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public:
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SVGDrawingCallback(SVGDocumentWrapper* aSVGDocumentWrapper,
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const IntRect& aViewport,
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const IntSize& aSize,
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uint32_t aImageFlags)
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: mSVGDocumentWrapper(aSVGDocumentWrapper)
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, mViewport(aViewport)
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, mSize(aSize)
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, mImageFlags(aImageFlags)
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{ }
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virtual bool operator()(gfxContext* aContext,
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const gfxRect& aFillRect,
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const Filter& aFilter,
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const gfxMatrix& aTransform);
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private:
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RefPtr<SVGDocumentWrapper> mSVGDocumentWrapper;
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const IntRect mViewport;
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const IntSize mSize;
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uint32_t mImageFlags;
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};
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// Based loosely on nsSVGIntegrationUtils' PaintFrameCallback::operator()
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bool
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SVGDrawingCallback::operator()(gfxContext* aContext,
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const gfxRect& aFillRect,
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const Filter& aFilter,
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const gfxMatrix& aTransform)
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{
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MOZ_ASSERT(mSVGDocumentWrapper, "need an SVGDocumentWrapper");
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// Get (& sanity-check) the helper-doc's presShell
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nsCOMPtr<nsIPresShell> presShell;
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if (NS_FAILED(mSVGDocumentWrapper->GetPresShell(getter_AddRefs(presShell)))) {
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NS_WARNING("Unable to draw -- presShell lookup failed");
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return false;
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}
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MOZ_ASSERT(presShell, "GetPresShell succeeded but returned null");
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gfxContextAutoSaveRestore contextRestorer(aContext);
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// Clip to aFillRect so that we don't paint outside.
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aContext->NewPath();
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aContext->Rectangle(aFillRect);
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aContext->Clip();
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gfxMatrix matrix = aTransform;
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if (!matrix.Invert()) {
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return false;
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}
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aContext->SetMatrix(
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aContext->CurrentMatrix().PreMultiply(matrix).
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Scale(double(mSize.width) / mViewport.width,
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double(mSize.height) / mViewport.height));
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nsPresContext* presContext = presShell->GetPresContext();
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MOZ_ASSERT(presContext, "pres shell w/out pres context");
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nsRect svgRect(presContext->DevPixelsToAppUnits(mViewport.x),
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presContext->DevPixelsToAppUnits(mViewport.y),
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presContext->DevPixelsToAppUnits(mViewport.width),
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presContext->DevPixelsToAppUnits(mViewport.height));
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uint32_t renderDocFlags = nsIPresShell::RENDER_IGNORE_VIEWPORT_SCROLLING;
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if (!(mImageFlags & imgIContainer::FLAG_SYNC_DECODE)) {
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renderDocFlags |= nsIPresShell::RENDER_ASYNC_DECODE_IMAGES;
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}
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presShell->RenderDocument(svgRect, renderDocFlags,
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NS_RGBA(0, 0, 0, 0), // transparent
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aContext);
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return true;
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}
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// Implement VectorImage's nsISupports-inherited methods
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NS_IMPL_ISUPPORTS(VectorImage,
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imgIContainer,
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nsIStreamListener,
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nsIRequestObserver)
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//------------------------------------------------------------------------------
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// Constructor / Destructor
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VectorImage::VectorImage(ImageURL* aURI /* = nullptr */) :
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ImageResource(aURI), // invoke superclass's constructor
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mLockCount(0),
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mIsInitialized(false),
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mIsFullyLoaded(false),
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mIsDrawing(false),
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mHaveAnimations(false),
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mHasPendingInvalidation(false)
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{ }
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VectorImage::~VectorImage()
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{
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CancelAllListeners();
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SurfaceCache::RemoveImage(ImageKey(this));
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}
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//------------------------------------------------------------------------------
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// Methods inherited from Image.h
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nsresult
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VectorImage::Init(const char* aMimeType,
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uint32_t aFlags)
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{
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// We don't support re-initialization
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if (mIsInitialized) {
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return NS_ERROR_ILLEGAL_VALUE;
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}
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MOZ_ASSERT(!mIsFullyLoaded && !mHaveAnimations && !mError,
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"Flags unexpectedly set before initialization");
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MOZ_ASSERT(!strcmp(aMimeType, IMAGE_SVG_XML), "Unexpected mimetype");
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mDiscardable = !!(aFlags & INIT_FLAG_DISCARDABLE);
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// Lock this image's surfaces in the SurfaceCache if we're not discardable.
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if (!mDiscardable) {
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mLockCount++;
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SurfaceCache::LockImage(ImageKey(this));
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}
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mIsInitialized = true;
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return NS_OK;
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}
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size_t
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VectorImage::SizeOfSourceWithComputedFallback(MallocSizeOf aMallocSizeOf) const
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{
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nsIDocument* doc = mSVGDocumentWrapper->GetDocument();
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if (!doc) {
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return 0; // No document, so no memory used for the document.
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}
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nsWindowSizes windowSizes(aMallocSizeOf);
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doc->DocAddSizeOfIncludingThis(&windowSizes);
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if (windowSizes.getTotalSize() == 0) {
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// MallocSizeOf fails on this platform. Because we also use this method for
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// determining the size of cache entries, we need to return something
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// reasonable here. Unfortunately, there's no way to estimate the document's
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// size accurately, so we just use a constant value of 100KB, which will
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// generally underestimate the true size.
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return 100 * 1024;
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}
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return windowSizes.getTotalSize();
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}
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void
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VectorImage::CollectSizeOfSurfaces(nsTArray<SurfaceMemoryCounter>& aCounters,
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MallocSizeOf aMallocSizeOf) const
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{
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SurfaceCache::CollectSizeOfSurfaces(ImageKey(this), aCounters, aMallocSizeOf);
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}
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nsresult
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VectorImage::OnImageDataComplete(nsIRequest* aRequest,
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nsISupports* aContext,
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nsresult aStatus,
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bool aLastPart)
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{
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// Call our internal OnStopRequest method, which only talks to our embedded
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// SVG document. This won't have any effect on our ProgressTracker.
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nsresult finalStatus = OnStopRequest(aRequest, aContext, aStatus);
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// Give precedence to Necko failure codes.
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if (NS_FAILED(aStatus)) {
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finalStatus = aStatus;
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}
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Progress loadProgress = LoadCompleteProgress(aLastPart, mError, finalStatus);
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if (mIsFullyLoaded || mError) {
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// Our document is loaded, so we're ready to notify now.
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mProgressTracker->SyncNotifyProgress(loadProgress);
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} else {
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// Record our progress so far; we'll actually send the notifications in
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// OnSVGDocumentLoaded or OnSVGDocumentError.
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mLoadProgress = Some(loadProgress);
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}
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return finalStatus;
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}
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nsresult
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VectorImage::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)
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{
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return OnDataAvailable(aRequest, aContext, aInStr, aSourceOffset, aCount);
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}
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nsresult
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VectorImage::StartAnimation()
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{
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if (mError) {
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return NS_ERROR_FAILURE;
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}
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MOZ_ASSERT(ShouldAnimate(), "Should not animate!");
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mSVGDocumentWrapper->StartAnimation();
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return NS_OK;
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}
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nsresult
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VectorImage::StopAnimation()
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{
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nsresult rv = NS_OK;
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if (mError) {
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rv = NS_ERROR_FAILURE;
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} else {
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MOZ_ASSERT(mIsFullyLoaded && mHaveAnimations,
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"Should not have been animating!");
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mSVGDocumentWrapper->StopAnimation();
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}
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mAnimating = false;
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return rv;
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}
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bool
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VectorImage::ShouldAnimate()
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{
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return ImageResource::ShouldAnimate() && mIsFullyLoaded && mHaveAnimations;
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}
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NS_IMETHODIMP_(void)
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VectorImage::SetAnimationStartTime(const TimeStamp& aTime)
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{
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// We don't care about animation start time.
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}
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//------------------------------------------------------------------------------
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// imgIContainer methods
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//******************************************************************************
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NS_IMETHODIMP
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VectorImage::GetWidth(int32_t* aWidth)
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{
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if (mError || !mIsFullyLoaded) {
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// XXXdholbert Technically we should leave outparam untouched when we
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// fail. But since many callers don't check for failure, we set it to 0 on
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// failure, for sane/predictable results.
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*aWidth = 0;
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return NS_ERROR_FAILURE;
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}
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SVGSVGElement* rootElem = mSVGDocumentWrapper->GetRootSVGElem();
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MOZ_ASSERT(rootElem, "Should have a root SVG elem, since we finished "
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"loading without errors");
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int32_t rootElemWidth = rootElem->GetIntrinsicWidth();
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if (rootElemWidth < 0) {
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*aWidth = 0;
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return NS_ERROR_FAILURE;
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}
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*aWidth = rootElemWidth;
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return NS_OK;
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}
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//******************************************************************************
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NS_IMETHODIMP_(void)
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VectorImage::RequestRefresh(const TimeStamp& aTime)
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{
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if (HadRecentRefresh(aTime)) {
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return;
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}
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PendingAnimationTracker* tracker =
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mSVGDocumentWrapper->GetDocument()->GetPendingAnimationTracker();
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if (tracker && ShouldAnimate()) {
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tracker->TriggerPendingAnimationsOnNextTick(aTime);
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}
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EvaluateAnimation();
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mSVGDocumentWrapper->TickRefreshDriver();
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if (mHasPendingInvalidation) {
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SendInvalidationNotifications();
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mHasPendingInvalidation = false;
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}
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}
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|
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void
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VectorImage::SendInvalidationNotifications()
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{
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// Animated images don't send out invalidation notifications as soon as
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// they're generated. Instead, InvalidateObserversOnNextRefreshDriverTick
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// records that there are pending invalidations and then returns immediately.
|
|
// The notifications are actually sent from RequestRefresh(). We send these
|
|
// notifications there to ensure that there is actually a document observing
|
|
// us. Otherwise, the notifications are just wasted effort.
|
|
//
|
|
// Non-animated images call this method directly from
|
|
// InvalidateObserversOnNextRefreshDriverTick, because RequestRefresh is never
|
|
// called for them. Ordinarily this isn't needed, since we send out
|
|
// invalidation notifications in OnSVGDocumentLoaded, but in rare cases the
|
|
// SVG document may not be 100% ready to render at that time. In those cases
|
|
// we would miss the subsequent invalidations if we didn't send out the
|
|
// notifications directly in |InvalidateObservers...|.
|
|
|
|
if (mProgressTracker) {
|
|
SurfaceCache::RemoveImage(ImageKey(this));
|
|
mProgressTracker->SyncNotifyProgress(FLAG_FRAME_COMPLETE,
|
|
GetMaxSizedIntRect());
|
|
}
|
|
}
|
|
|
|
NS_IMETHODIMP_(IntRect)
|
|
VectorImage::GetImageSpaceInvalidationRect(const IntRect& aRect)
|
|
{
|
|
return aRect;
|
|
}
|
|
|
|
//******************************************************************************
|
|
NS_IMETHODIMP
|
|
VectorImage::GetHeight(int32_t* aHeight)
|
|
{
|
|
if (mError || !mIsFullyLoaded) {
|
|
// XXXdholbert Technically we should leave outparam untouched when we
|
|
// fail. But since many callers don't check for failure, we set it to 0 on
|
|
// failure, for sane/predictable results.
|
|
*aHeight = 0;
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
SVGSVGElement* rootElem = mSVGDocumentWrapper->GetRootSVGElem();
|
|
MOZ_ASSERT(rootElem, "Should have a root SVG elem, since we finished "
|
|
"loading without errors");
|
|
int32_t rootElemHeight = rootElem->GetIntrinsicHeight();
|
|
if (rootElemHeight < 0) {
|
|
*aHeight = 0;
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
*aHeight = rootElemHeight;
|
|
return NS_OK;
|
|
}
|
|
|
|
//******************************************************************************
|
|
NS_IMETHODIMP
|
|
VectorImage::GetIntrinsicSize(nsSize* aSize)
|
|
{
|
|
if (mError || !mIsFullyLoaded) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsIFrame* rootFrame = mSVGDocumentWrapper->GetRootLayoutFrame();
|
|
if (!rootFrame) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
*aSize = nsSize(-1, -1);
|
|
IntrinsicSize rfSize = rootFrame->GetIntrinsicSize();
|
|
if (rfSize.width.GetUnit() == eStyleUnit_Coord) {
|
|
aSize->width = rfSize.width.GetCoordValue();
|
|
}
|
|
if (rfSize.height.GetUnit() == eStyleUnit_Coord) {
|
|
aSize->height = rfSize.height.GetCoordValue();
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
//******************************************************************************
|
|
NS_IMETHODIMP
|
|
VectorImage::GetIntrinsicRatio(nsSize* aRatio)
|
|
{
|
|
if (mError || !mIsFullyLoaded) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsIFrame* rootFrame = mSVGDocumentWrapper->GetRootLayoutFrame();
|
|
if (!rootFrame) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
*aRatio = rootFrame->GetIntrinsicRatio();
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP_(Orientation)
|
|
VectorImage::GetOrientation()
|
|
{
|
|
return Orientation();
|
|
}
|
|
|
|
//******************************************************************************
|
|
NS_IMETHODIMP
|
|
VectorImage::GetType(uint16_t* aType)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aType);
|
|
|
|
*aType = imgIContainer::TYPE_VECTOR;
|
|
return NS_OK;
|
|
}
|
|
|
|
//******************************************************************************
|
|
NS_IMETHODIMP
|
|
VectorImage::GetAnimated(bool* aAnimated)
|
|
{
|
|
if (mError || !mIsFullyLoaded) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
*aAnimated = mSVGDocumentWrapper->IsAnimated();
|
|
return NS_OK;
|
|
}
|
|
|
|
//******************************************************************************
|
|
int32_t
|
|
VectorImage::GetFirstFrameDelay()
|
|
{
|
|
if (mError) {
|
|
return -1;
|
|
}
|
|
|
|
if (!mSVGDocumentWrapper->IsAnimated()) {
|
|
return -1;
|
|
}
|
|
|
|
// We don't really have a frame delay, so just pretend that we constantly
|
|
// need updates.
|
|
return 0;
|
|
}
|
|
|
|
NS_IMETHODIMP_(bool)
|
|
VectorImage::IsOpaque()
|
|
{
|
|
return false; // In general, SVG content is not opaque.
|
|
}
|
|
|
|
//******************************************************************************
|
|
NS_IMETHODIMP_(already_AddRefed<SourceSurface>)
|
|
VectorImage::GetFrame(uint32_t aWhichFrame, uint32_t aFlags)
|
|
{
|
|
// Look up height & width
|
|
// ----------------------
|
|
SVGSVGElement* svgElem = mSVGDocumentWrapper->GetRootSVGElem();
|
|
MOZ_ASSERT(svgElem, "Should have a root SVG elem, since we finished "
|
|
"loading without errors");
|
|
nsIntSize imageIntSize(svgElem->GetIntrinsicWidth(),
|
|
svgElem->GetIntrinsicHeight());
|
|
|
|
if (imageIntSize.IsEmpty()) {
|
|
// We'll get here if our SVG doc has a percent-valued or negative width or
|
|
// height.
|
|
return nullptr;
|
|
}
|
|
|
|
return GetFrameAtSize(imageIntSize, aWhichFrame, aFlags);
|
|
}
|
|
|
|
NS_IMETHODIMP_(already_AddRefed<SourceSurface>)
|
|
VectorImage::GetFrameAtSize(const IntSize& aSize,
|
|
uint32_t aWhichFrame,
|
|
uint32_t aFlags)
|
|
{
|
|
MOZ_ASSERT(aWhichFrame <= FRAME_MAX_VALUE);
|
|
|
|
if (aSize.IsEmpty()) {
|
|
return nullptr;
|
|
}
|
|
|
|
if (aWhichFrame > FRAME_MAX_VALUE) {
|
|
return nullptr;
|
|
}
|
|
|
|
if (mError || !mIsFullyLoaded) {
|
|
return nullptr;
|
|
}
|
|
|
|
// Make our surface the size of what will ultimately be drawn to it.
|
|
// (either the full image size, or the restricted region)
|
|
RefPtr<DrawTarget> dt = gfxPlatform::GetPlatform()->
|
|
CreateOffscreenContentDrawTarget(aSize, SurfaceFormat::B8G8R8A8);
|
|
if (!dt) {
|
|
NS_ERROR("Could not create a DrawTarget");
|
|
return nullptr;
|
|
}
|
|
|
|
RefPtr<gfxContext> context = new gfxContext(dt);
|
|
|
|
auto result = Draw(context, aSize, ImageRegion::Create(aSize),
|
|
aWhichFrame, Filter::POINT, Nothing(), aFlags);
|
|
|
|
return result == DrawResult::SUCCESS ? dt->Snapshot() : nullptr;
|
|
}
|
|
|
|
NS_IMETHODIMP_(bool)
|
|
VectorImage::IsImageContainerAvailable(LayerManager* aManager, uint32_t aFlags)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
//******************************************************************************
|
|
NS_IMETHODIMP_(already_AddRefed<ImageContainer>)
|
|
VectorImage::GetImageContainer(LayerManager* aManager, uint32_t aFlags)
|
|
{
|
|
return nullptr;
|
|
}
|
|
|
|
struct SVGDrawingParameters
|
|
{
|
|
SVGDrawingParameters(gfxContext* aContext,
|
|
const nsIntSize& aSize,
|
|
const ImageRegion& aRegion,
|
|
Filter aFilter,
|
|
const Maybe<SVGImageContext>& aSVGContext,
|
|
float aAnimationTime,
|
|
uint32_t aFlags)
|
|
: context(aContext)
|
|
, size(aSize.width, aSize.height)
|
|
, imageRect(0, 0, aSize.width, aSize.height)
|
|
, region(aRegion)
|
|
, filter(aFilter)
|
|
, svgContext(aSVGContext)
|
|
, viewportSize(aSize)
|
|
, animationTime(aAnimationTime)
|
|
, flags(aFlags)
|
|
, opacity(aSVGContext ? aSVGContext->GetGlobalOpacity() : 1.0)
|
|
{
|
|
if (aSVGContext) {
|
|
CSSIntSize sz = aSVGContext->GetViewportSize();
|
|
viewportSize = nsIntSize(sz.width, sz.height); // XXX losing unit
|
|
}
|
|
}
|
|
|
|
gfxContext* context;
|
|
IntSize size;
|
|
IntRect imageRect;
|
|
ImageRegion region;
|
|
Filter filter;
|
|
const Maybe<SVGImageContext>& svgContext;
|
|
nsIntSize viewportSize;
|
|
float animationTime;
|
|
uint32_t flags;
|
|
gfxFloat opacity;
|
|
};
|
|
|
|
//******************************************************************************
|
|
NS_IMETHODIMP_(DrawResult)
|
|
VectorImage::Draw(gfxContext* aContext,
|
|
const nsIntSize& aSize,
|
|
const ImageRegion& aRegion,
|
|
uint32_t aWhichFrame,
|
|
Filter aFilter,
|
|
const Maybe<SVGImageContext>& aSVGContext,
|
|
uint32_t aFlags)
|
|
{
|
|
if (aWhichFrame > FRAME_MAX_VALUE) {
|
|
return DrawResult::BAD_ARGS;
|
|
}
|
|
|
|
if (!aContext) {
|
|
return DrawResult::BAD_ARGS;
|
|
}
|
|
|
|
if (mError) {
|
|
return DrawResult::BAD_IMAGE;
|
|
}
|
|
|
|
if (!mIsFullyLoaded) {
|
|
return DrawResult::NOT_READY;
|
|
}
|
|
|
|
if (mIsDrawing) {
|
|
NS_WARNING("Refusing to make re-entrant call to VectorImage::Draw");
|
|
return DrawResult::TEMPORARY_ERROR;
|
|
}
|
|
|
|
if (mAnimationConsumers == 0 && mProgressTracker) {
|
|
mProgressTracker->OnUnlockedDraw();
|
|
}
|
|
|
|
AutoRestore<bool> autoRestoreIsDrawing(mIsDrawing);
|
|
mIsDrawing = true;
|
|
|
|
float animTime =
|
|
(aWhichFrame == FRAME_FIRST) ? 0.0f
|
|
: mSVGDocumentWrapper->GetCurrentTime();
|
|
AutoSVGRenderingState autoSVGState(aSVGContext, animTime,
|
|
mSVGDocumentWrapper->GetRootSVGElem());
|
|
|
|
// Pack up the drawing parameters.
|
|
SVGDrawingParameters params(aContext, aSize, aRegion, aFilter,
|
|
aSVGContext, animTime, aFlags);
|
|
|
|
if (aFlags & FLAG_BYPASS_SURFACE_CACHE) {
|
|
CreateSurfaceAndShow(params);
|
|
return DrawResult::SUCCESS;
|
|
}
|
|
|
|
LookupResult result =
|
|
SurfaceCache::Lookup(ImageKey(this),
|
|
VectorSurfaceKey(params.size,
|
|
params.svgContext,
|
|
params.animationTime));
|
|
|
|
// Draw.
|
|
if (result) {
|
|
RefPtr<SourceSurface> surface = result.DrawableRef()->GetSurface();
|
|
if (surface) {
|
|
RefPtr<gfxDrawable> svgDrawable =
|
|
new gfxSurfaceDrawable(surface, result.DrawableRef()->GetSize());
|
|
Show(svgDrawable, params);
|
|
return DrawResult::SUCCESS;
|
|
}
|
|
|
|
// We lost our surface due to some catastrophic event.
|
|
RecoverFromLossOfSurfaces();
|
|
}
|
|
|
|
CreateSurfaceAndShow(params);
|
|
|
|
return DrawResult::SUCCESS;
|
|
}
|
|
|
|
void
|
|
VectorImage::CreateSurfaceAndShow(const SVGDrawingParameters& aParams)
|
|
{
|
|
mSVGDocumentWrapper->UpdateViewportBounds(aParams.viewportSize);
|
|
mSVGDocumentWrapper->FlushImageTransformInvalidation();
|
|
|
|
RefPtr<gfxDrawingCallback> cb =
|
|
new SVGDrawingCallback(mSVGDocumentWrapper,
|
|
IntRect(IntPoint(0, 0), aParams.viewportSize),
|
|
aParams.size,
|
|
aParams.flags);
|
|
|
|
RefPtr<gfxDrawable> svgDrawable =
|
|
new gfxCallbackDrawable(cb, aParams.size);
|
|
|
|
bool bypassCache = bool(aParams.flags & FLAG_BYPASS_SURFACE_CACHE) ||
|
|
// Refuse to cache animated images:
|
|
// XXX(seth): We may remove this restriction in bug 922893.
|
|
mHaveAnimations ||
|
|
// The image is too big to fit in the cache:
|
|
!SurfaceCache::CanHold(aParams.size);
|
|
if (bypassCache) {
|
|
return Show(svgDrawable, aParams);
|
|
}
|
|
|
|
// We're about to rerasterize, which may mean that some of the previous
|
|
// surfaces we've rasterized aren't useful anymore. We can allow them to
|
|
// expire from the cache by unlocking them here, and then sending out an
|
|
// invalidation. If this image is locked, any surfaces that are still useful
|
|
// will become locked again when Draw touches them, and the remainder will
|
|
// eventually expire.
|
|
SurfaceCache::UnlockSurfaces(ImageKey(this));
|
|
|
|
// Try to create an imgFrame, initializing the surface it contains by drawing
|
|
// our gfxDrawable into it. (We use FILTER_NEAREST since we never scale here.)
|
|
RefPtr<imgFrame> frame = new imgFrame;
|
|
nsresult rv =
|
|
frame->InitWithDrawable(svgDrawable, aParams.size,
|
|
SurfaceFormat::B8G8R8A8,
|
|
Filter::POINT, aParams.flags);
|
|
|
|
// If we couldn't create the frame, it was probably because it would end
|
|
// up way too big. Generally it also wouldn't fit in the cache, but the prefs
|
|
// could be set such that the cache isn't the limiting factor.
|
|
if (NS_FAILED(rv)) {
|
|
return Show(svgDrawable, aParams);
|
|
}
|
|
|
|
// Take a strong reference to the frame's surface and make sure it hasn't
|
|
// already been purged by the operating system.
|
|
RefPtr<SourceSurface> surface = frame->GetSurface();
|
|
if (!surface) {
|
|
return Show(svgDrawable, aParams);
|
|
}
|
|
|
|
// Attempt to cache the frame.
|
|
SurfaceCache::Insert(frame, ImageKey(this),
|
|
VectorSurfaceKey(aParams.size,
|
|
aParams.svgContext,
|
|
aParams.animationTime));
|
|
|
|
// Draw.
|
|
RefPtr<gfxDrawable> drawable =
|
|
new gfxSurfaceDrawable(surface, aParams.size);
|
|
Show(drawable, aParams);
|
|
|
|
// Send out an invalidation so that surfaces that are still in use get
|
|
// re-locked. See the discussion of the UnlockSurfaces call above.
|
|
mProgressTracker->SyncNotifyProgress(FLAG_FRAME_COMPLETE,
|
|
GetMaxSizedIntRect());
|
|
}
|
|
|
|
|
|
void
|
|
VectorImage::Show(gfxDrawable* aDrawable, const SVGDrawingParameters& aParams)
|
|
{
|
|
MOZ_ASSERT(aDrawable, "Should have a gfxDrawable by now");
|
|
gfxUtils::DrawPixelSnapped(aParams.context, aDrawable,
|
|
aParams.size,
|
|
aParams.region,
|
|
SurfaceFormat::B8G8R8A8,
|
|
aParams.filter, aParams.flags, aParams.opacity);
|
|
|
|
MOZ_ASSERT(mRenderingObserver, "Should have a rendering observer by now");
|
|
mRenderingObserver->ResumeHonoringInvalidations();
|
|
}
|
|
|
|
void
|
|
VectorImage::RecoverFromLossOfSurfaces()
|
|
{
|
|
NS_WARNING("An imgFrame became invalid. Attempting to recover...");
|
|
|
|
// Discard all existing frames, since they're probably all now invalid.
|
|
SurfaceCache::RemoveImage(ImageKey(this));
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
VectorImage::StartDecoding()
|
|
{
|
|
// Nothing to do for SVG images
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
VectorImage::RequestDecodeForSize(const nsIntSize& aSize, uint32_t aFlags)
|
|
{
|
|
// Nothing to do for SVG images, though in theory we could rasterize to the
|
|
// provided size ahead of time if we supported off-main-thread SVG
|
|
// rasterization...
|
|
return NS_OK;
|
|
}
|
|
|
|
//******************************************************************************
|
|
|
|
NS_IMETHODIMP
|
|
VectorImage::LockImage()
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
if (mError) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
mLockCount++;
|
|
|
|
if (mLockCount == 1) {
|
|
// Lock this image's surfaces in the SurfaceCache.
|
|
SurfaceCache::LockImage(ImageKey(this));
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
//******************************************************************************
|
|
|
|
NS_IMETHODIMP
|
|
VectorImage::UnlockImage()
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
if (mError) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
if (mLockCount == 0) {
|
|
MOZ_ASSERT_UNREACHABLE("Calling UnlockImage with a zero lock count");
|
|
return NS_ERROR_ABORT;
|
|
}
|
|
|
|
mLockCount--;
|
|
|
|
if (mLockCount == 0) {
|
|
// Unlock this image's surfaces in the SurfaceCache.
|
|
SurfaceCache::UnlockImage(ImageKey(this));
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
//******************************************************************************
|
|
|
|
NS_IMETHODIMP
|
|
VectorImage::RequestDiscard()
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
if (mDiscardable && mLockCount == 0) {
|
|
SurfaceCache::RemoveImage(ImageKey(this));
|
|
mProgressTracker->OnDiscard();
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
VectorImage::OnSurfaceDiscarded()
|
|
{
|
|
MOZ_ASSERT(mProgressTracker);
|
|
|
|
nsCOMPtr<nsIRunnable> runnable =
|
|
NS_NewRunnableMethod(mProgressTracker, &ProgressTracker::OnDiscard);
|
|
NS_DispatchToMainThread(runnable);
|
|
}
|
|
|
|
//******************************************************************************
|
|
NS_IMETHODIMP
|
|
VectorImage::ResetAnimation()
|
|
{
|
|
if (mError) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
if (!mIsFullyLoaded || !mHaveAnimations) {
|
|
return NS_OK; // There are no animations to be reset.
|
|
}
|
|
|
|
mSVGDocumentWrapper->ResetAnimation();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP_(float)
|
|
VectorImage::GetFrameIndex(uint32_t aWhichFrame)
|
|
{
|
|
MOZ_ASSERT(aWhichFrame <= FRAME_MAX_VALUE, "Invalid argument");
|
|
return aWhichFrame == FRAME_FIRST
|
|
? 0.0f
|
|
: mSVGDocumentWrapper->GetCurrentTime();
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
// nsIRequestObserver methods
|
|
|
|
//******************************************************************************
|
|
NS_IMETHODIMP
|
|
VectorImage::OnStartRequest(nsIRequest* aRequest, nsISupports* aCtxt)
|
|
{
|
|
MOZ_ASSERT(!mSVGDocumentWrapper,
|
|
"Repeated call to OnStartRequest -- can this happen?");
|
|
|
|
mSVGDocumentWrapper = new SVGDocumentWrapper();
|
|
nsresult rv = mSVGDocumentWrapper->OnStartRequest(aRequest, aCtxt);
|
|
if (NS_FAILED(rv)) {
|
|
mSVGDocumentWrapper = nullptr;
|
|
mError = true;
|
|
return rv;
|
|
}
|
|
|
|
// Block page load until the document's ready. (We unblock it in
|
|
// OnSVGDocumentLoaded or OnSVGDocumentError.)
|
|
if (mProgressTracker) {
|
|
mProgressTracker->SyncNotifyProgress(FLAG_ONLOAD_BLOCKED);
|
|
}
|
|
|
|
// Create a listener to wait until the SVG document is fully loaded, which
|
|
// will signal that this image is ready to render. Certain error conditions
|
|
// will prevent us from ever getting this notification, so we also create a
|
|
// listener that waits for parsing to complete and cancels the
|
|
// SVGLoadEventListener if needed. The listeners are automatically attached
|
|
// to the document by their constructors.
|
|
nsIDocument* document = mSVGDocumentWrapper->GetDocument();
|
|
mLoadEventListener = new SVGLoadEventListener(document, this);
|
|
mParseCompleteListener = new SVGParseCompleteListener(document, this);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
//******************************************************************************
|
|
NS_IMETHODIMP
|
|
VectorImage::OnStopRequest(nsIRequest* aRequest, nsISupports* aCtxt,
|
|
nsresult aStatus)
|
|
{
|
|
if (mError) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
return mSVGDocumentWrapper->OnStopRequest(aRequest, aCtxt, aStatus);
|
|
}
|
|
|
|
void
|
|
VectorImage::OnSVGDocumentParsed()
|
|
{
|
|
MOZ_ASSERT(mParseCompleteListener, "Should have the parse complete listener");
|
|
MOZ_ASSERT(mLoadEventListener, "Should have the load event listener");
|
|
|
|
if (!mSVGDocumentWrapper->GetRootSVGElem()) {
|
|
// This is an invalid SVG document. It may have failed to parse, or it may
|
|
// be missing the <svg> root element, or the <svg> root element may not
|
|
// declare the correct namespace. In any of these cases, we'll never be
|
|
// notified that the SVG finished loading, so we need to treat this as an
|
|
// error.
|
|
OnSVGDocumentError();
|
|
}
|
|
}
|
|
|
|
void
|
|
VectorImage::CancelAllListeners()
|
|
{
|
|
if (mParseCompleteListener) {
|
|
mParseCompleteListener->Cancel();
|
|
mParseCompleteListener = nullptr;
|
|
}
|
|
if (mLoadEventListener) {
|
|
mLoadEventListener->Cancel();
|
|
mLoadEventListener = nullptr;
|
|
}
|
|
}
|
|
|
|
void
|
|
VectorImage::OnSVGDocumentLoaded()
|
|
{
|
|
MOZ_ASSERT(mSVGDocumentWrapper->GetRootSVGElem(),
|
|
"Should have parsed successfully");
|
|
MOZ_ASSERT(!mIsFullyLoaded && !mHaveAnimations,
|
|
"These flags shouldn't get set until OnSVGDocumentLoaded. "
|
|
"Duplicate calls to OnSVGDocumentLoaded?");
|
|
|
|
CancelAllListeners();
|
|
|
|
// XXX Flushing is wasteful if embedding frame hasn't had initial reflow.
|
|
mSVGDocumentWrapper->FlushLayout();
|
|
|
|
mIsFullyLoaded = true;
|
|
mHaveAnimations = mSVGDocumentWrapper->IsAnimated();
|
|
|
|
// Start listening to our image for rendering updates.
|
|
mRenderingObserver = new SVGRootRenderingObserver(mSVGDocumentWrapper, this);
|
|
|
|
// Tell *our* observers that we're done loading.
|
|
if (mProgressTracker) {
|
|
Progress progress = FLAG_SIZE_AVAILABLE |
|
|
FLAG_HAS_TRANSPARENCY |
|
|
FLAG_FRAME_COMPLETE |
|
|
FLAG_DECODE_COMPLETE |
|
|
FLAG_ONLOAD_UNBLOCKED;
|
|
|
|
// Merge in any saved progress from OnImageDataComplete.
|
|
if (mLoadProgress) {
|
|
progress |= *mLoadProgress;
|
|
mLoadProgress = Nothing();
|
|
}
|
|
|
|
mProgressTracker->SyncNotifyProgress(progress, GetMaxSizedIntRect());
|
|
}
|
|
|
|
EvaluateAnimation();
|
|
}
|
|
|
|
void
|
|
VectorImage::OnSVGDocumentError()
|
|
{
|
|
CancelAllListeners();
|
|
|
|
mError = true;
|
|
|
|
if (mProgressTracker) {
|
|
// Notify observers about the error and unblock page load.
|
|
Progress progress = FLAG_ONLOAD_UNBLOCKED | FLAG_HAS_ERROR;
|
|
|
|
// Merge in any saved progress from OnImageDataComplete.
|
|
if (mLoadProgress) {
|
|
progress |= *mLoadProgress;
|
|
mLoadProgress = Nothing();
|
|
}
|
|
|
|
mProgressTracker->SyncNotifyProgress(progress);
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
// nsIStreamListener method
|
|
|
|
//******************************************************************************
|
|
NS_IMETHODIMP
|
|
VectorImage::OnDataAvailable(nsIRequest* aRequest, nsISupports* aCtxt,
|
|
nsIInputStream* aInStr, uint64_t aSourceOffset,
|
|
uint32_t aCount)
|
|
{
|
|
if (mError) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
return mSVGDocumentWrapper->OnDataAvailable(aRequest, aCtxt, aInStr,
|
|
aSourceOffset, aCount);
|
|
}
|
|
|
|
// --------------------------
|
|
// Invalidation helper method
|
|
|
|
void
|
|
VectorImage::InvalidateObserversOnNextRefreshDriverTick()
|
|
{
|
|
if (mHaveAnimations) {
|
|
mHasPendingInvalidation = true;
|
|
} else {
|
|
SendInvalidationNotifications();
|
|
}
|
|
}
|
|
|
|
void
|
|
VectorImage::PropagateUseCounters(nsIDocument* aParentDocument)
|
|
{
|
|
nsIDocument* doc = mSVGDocumentWrapper->GetDocument();
|
|
if (doc) {
|
|
doc->PropagateUseCounters(aParentDocument);
|
|
}
|
|
}
|
|
|
|
void
|
|
VectorImage::ReportUseCounters()
|
|
{
|
|
nsIDocument* doc = mSVGDocumentWrapper->GetDocument();
|
|
if (doc) {
|
|
static_cast<nsDocument*>(doc)->ReportUseCounters();
|
|
}
|
|
}
|
|
|
|
nsIntSize
|
|
VectorImage::OptimalImageSizeForDest(const gfxSize& aDest,
|
|
uint32_t aWhichFrame,
|
|
Filter aFilter,
|
|
uint32_t aFlags)
|
|
{
|
|
MOZ_ASSERT(aDest.width >= 0 || ceil(aDest.width) <= INT32_MAX ||
|
|
aDest.height >= 0 || ceil(aDest.height) <= INT32_MAX,
|
|
"Unexpected destination size");
|
|
|
|
// We can rescale SVGs freely, so just return the provided destination size.
|
|
return nsIntSize(ceil(aDest.width), ceil(aDest.height));
|
|
}
|
|
|
|
already_AddRefed<imgIContainer>
|
|
VectorImage::Unwrap()
|
|
{
|
|
nsCOMPtr<imgIContainer> self(this);
|
|
return self.forget();
|
|
}
|
|
|
|
} // namespace image
|
|
} // namespace mozilla
|