mirror of
https://github.com/classilla/tenfourfox.git
synced 2024-09-11 02:56:06 +00:00
844 lines
25 KiB
C++
844 lines
25 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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// Main header first:
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#include "nsSVGEffects.h"
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// Keep others in (case-insensitive) order:
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#include "nsCSSFrameConstructor.h"
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#include "nsISupportsImpl.h"
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#include "nsSVGClipPathFrame.h"
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#include "nsSVGPaintServerFrame.h"
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#include "nsSVGPathGeometryElement.h"
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#include "nsSVGFilterFrame.h"
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#include "nsSVGMaskFrame.h"
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#include "nsIReflowCallback.h"
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#include "RestyleManager.h"
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#include "nsCycleCollectionParticipant.h"
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using namespace mozilla;
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using namespace mozilla::dom;
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void
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nsSVGRenderingObserver::StartListening()
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{
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Element* target = GetTarget();
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if (target) {
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target->AddMutationObserver(this);
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}
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}
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void
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nsSVGRenderingObserver::StopListening()
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{
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Element* target = GetTarget();
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if (target) {
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target->RemoveMutationObserver(this);
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if (mInObserverList) {
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nsSVGEffects::RemoveRenderingObserver(target, this);
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mInObserverList = false;
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}
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}
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NS_ASSERTION(!mInObserverList, "still in an observer list?");
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}
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static nsSVGRenderingObserverList *
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GetObserverList(Element *aElement)
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{
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return static_cast<nsSVGRenderingObserverList*>
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(aElement->GetProperty(nsGkAtoms::renderingobserverlist));
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}
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Element*
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nsSVGRenderingObserver::GetReferencedElement()
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{
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Element* target = GetTarget();
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#ifdef DEBUG
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if (target) {
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nsSVGRenderingObserverList *observerList = GetObserverList(target);
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bool inObserverList = observerList && observerList->Contains(this);
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NS_ASSERTION(inObserverList == mInObserverList, "failed to track whether we're in our referenced element's observer list!");
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} else {
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NS_ASSERTION(!mInObserverList, "In whose observer list are we, then?");
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}
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#endif
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if (target && !mInObserverList) {
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nsSVGEffects::AddRenderingObserver(target, this);
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mInObserverList = true;
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}
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return target;
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}
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nsIFrame*
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nsSVGRenderingObserver::GetReferencedFrame()
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{
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Element* referencedElement = GetReferencedElement();
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return referencedElement ? referencedElement->GetPrimaryFrame() : nullptr;
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}
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nsIFrame*
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nsSVGRenderingObserver::GetReferencedFrame(nsIAtom* aFrameType, bool* aOK)
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{
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nsIFrame* frame = GetReferencedFrame();
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if (frame) {
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if (frame->GetType() == aFrameType)
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return frame;
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if (aOK) {
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*aOK = false;
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}
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}
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return nullptr;
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}
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void
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nsSVGRenderingObserver::InvalidateViaReferencedElement()
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{
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mInObserverList = false;
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DoUpdate();
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}
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void
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nsSVGRenderingObserver::NotifyEvictedFromRenderingObserverList()
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{
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mInObserverList = false; // We've been removed from rendering-obs. list.
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StopListening(); // Remove ourselves from mutation-obs. list.
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}
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void
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nsSVGRenderingObserver::AttributeChanged(nsIDocument* aDocument,
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dom::Element* aElement,
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int32_t aNameSpaceID,
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nsIAtom* aAttribute,
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int32_t aModType,
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const nsAttrValue* aOldValue)
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{
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// An attribute belonging to the element that we are observing *or one of its
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// descendants* has changed.
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//
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// In the case of observing a gradient element, say, we want to know if any
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// of its 'stop' element children change, but we don't actually want to do
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// anything for changes to SMIL element children, for example. Maybe it's not
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// worth having logic to optimize for that, but in most cases it could be a
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// small check?
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//
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// XXXjwatt: do we really want to blindly break the link between our
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// observers and ourselves for all attribute changes? For non-ID changes
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// surely that is unnecessary.
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DoUpdate();
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}
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void
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nsSVGRenderingObserver::ContentAppended(nsIDocument *aDocument,
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nsIContent *aContainer,
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nsIContent *aFirstNewContent,
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int32_t /* unused */)
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{
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DoUpdate();
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}
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void
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nsSVGRenderingObserver::ContentInserted(nsIDocument *aDocument,
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nsIContent *aContainer,
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nsIContent *aChild,
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int32_t /* unused */)
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{
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DoUpdate();
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}
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void
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nsSVGRenderingObserver::ContentRemoved(nsIDocument *aDocument,
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nsIContent *aContainer,
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nsIContent *aChild,
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int32_t aIndexInContainer,
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nsIContent *aPreviousSibling)
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{
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DoUpdate();
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}
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/**
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* Note that in the current setup there are two separate observer lists.
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*
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* In nsSVGIDRenderingObserver's ctor, the new object adds itself to the
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* mutation observer list maintained by the referenced element. In this way the
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* nsSVGIDRenderingObserver is notified if there are any attribute or content
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* tree changes to the element or any of its *descendants*.
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*
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* In nsSVGIDRenderingObserver::GetReferencedElement() the
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* nsSVGIDRenderingObserver object also adds itself to an
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* nsSVGRenderingObserverList object belonging to the referenced
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* element.
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*
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* XXX: it would be nice to have a clear and concise executive summary of the
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* benefits/necessity of maintaining a second observer list.
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*/
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nsSVGIDRenderingObserver::nsSVGIDRenderingObserver(nsIURI* aURI,
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nsIContent* aObservingContent,
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bool aReferenceImage)
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: mElement(this)
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{
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// Start watching the target element
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mElement.Reset(aObservingContent, aURI, true, aReferenceImage);
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StartListening();
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}
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nsSVGIDRenderingObserver::~nsSVGIDRenderingObserver()
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{
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StopListening();
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}
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void
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nsSVGIDRenderingObserver::DoUpdate()
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{
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if (mElement.get() && mInObserverList) {
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nsSVGEffects::RemoveRenderingObserver(mElement.get(), this);
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mInObserverList = false;
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}
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}
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void
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nsSVGFrameReferenceFromProperty::Detach()
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{
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mFrame = nullptr;
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mFramePresShell = nullptr;
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}
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nsIFrame*
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nsSVGFrameReferenceFromProperty::Get()
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{
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if (mFramePresShell && mFramePresShell->IsDestroying()) {
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// mFrame is no longer valid.
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Detach();
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}
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return mFrame;
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}
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NS_IMPL_ISUPPORTS(nsSVGRenderingObserverProperty, nsIMutationObserver)
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void
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nsSVGRenderingObserverProperty::DoUpdate()
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{
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nsSVGIDRenderingObserver::DoUpdate();
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nsIFrame* frame = mFrameReference.Get();
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if (frame && frame->IsFrameOfType(nsIFrame::eSVG)) {
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// Changes should propagate out to things that might be observing
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// the referencing frame or its ancestors.
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nsLayoutUtils::PostRestyleEvent(
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frame->GetContent()->AsElement(), nsRestyleHint(0),
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nsChangeHint_InvalidateRenderingObservers);
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}
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}
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NS_IMPL_CYCLE_COLLECTING_ADDREF(nsSVGFilterReference)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(nsSVGFilterReference)
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NS_IMPL_CYCLE_COLLECTION_CLASS(nsSVGFilterReference)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsSVGFilterReference)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mElement)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsSVGFilterReference)
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tmp->StopListening();
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mElement);
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsSVGFilterReference)
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NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsSVGIDRenderingObserver)
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NS_INTERFACE_MAP_ENTRY(nsIMutationObserver)
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NS_INTERFACE_MAP_ENTRY(nsISVGFilterReference)
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NS_INTERFACE_MAP_END
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nsSVGFilterFrame *
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nsSVGFilterReference::GetFilterFrame()
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{
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return static_cast<nsSVGFilterFrame *>
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(GetReferencedFrame(nsGkAtoms::svgFilterFrame, nullptr));
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}
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void
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nsSVGFilterReference::DoUpdate()
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{
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nsSVGIDRenderingObserver::DoUpdate();
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if (mFilterChainObserver) {
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mFilterChainObserver->Invalidate();
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}
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}
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NS_IMPL_CYCLE_COLLECTING_ADDREF(nsSVGFilterChainObserver)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(nsSVGFilterChainObserver)
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NS_IMPL_CYCLE_COLLECTION_CLASS(nsSVGFilterChainObserver)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsSVGFilterChainObserver)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mReferences)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsSVGFilterChainObserver)
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tmp->DetachReferences();
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mReferences);
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsSVGFilterChainObserver)
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_END
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nsSVGFilterChainObserver::nsSVGFilterChainObserver(const nsTArray<nsStyleFilter>& aFilters,
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nsIContent* aFilteredElement)
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{
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for (uint32_t i = 0; i < aFilters.Length(); i++) {
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if (aFilters[i].GetType() != NS_STYLE_FILTER_URL)
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continue;
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RefPtr<nsSVGFilterReference> reference =
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new nsSVGFilterReference(aFilters[i].GetURL(), aFilteredElement, this);
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mReferences.AppendElement(reference);
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}
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}
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nsSVGFilterChainObserver::~nsSVGFilterChainObserver()
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{
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DetachReferences();
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}
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bool
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nsSVGFilterChainObserver::ReferencesValidResources()
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{
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for (uint32_t i = 0; i < mReferences.Length(); i++) {
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if (!mReferences[i]->ReferencesValidResource())
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return false;
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}
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return true;
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}
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bool
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nsSVGFilterChainObserver::IsInObserverLists() const
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{
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for (uint32_t i = 0; i < mReferences.Length(); i++) {
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if (!mReferences[i]->IsInObserverList())
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return false;
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}
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return true;
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}
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void
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nsSVGFilterProperty::DoUpdate()
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{
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nsIFrame* frame = mFrameReference.Get();
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if (!frame)
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return;
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// Repaint asynchronously in case the filter frame is being torn down
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nsChangeHint changeHint =
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nsChangeHint(nsChangeHint_RepaintFrame);
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if (frame && frame->IsFrameOfType(nsIFrame::eSVG)) {
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// Changes should propagate out to things that might be observing
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// the referencing frame or its ancestors.
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NS_UpdateHint(changeHint, nsChangeHint_InvalidateRenderingObservers);
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}
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// Don't need to request UpdateOverflow if we're being reflowed.
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if (!(frame->GetStateBits() & NS_FRAME_IN_REFLOW)) {
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NS_UpdateHint(changeHint, nsChangeHint_UpdateOverflow);
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}
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frame->PresContext()->RestyleManager()->PostRestyleEvent(
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frame->GetContent()->AsElement(), nsRestyleHint(0), changeHint);
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}
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void
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nsSVGMarkerProperty::DoUpdate()
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{
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nsSVGRenderingObserverProperty::DoUpdate();
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nsIFrame* frame = mFrameReference.Get();
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if (!frame)
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return;
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NS_ASSERTION(frame->IsFrameOfType(nsIFrame::eSVG), "SVG frame expected");
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// Repaint asynchronously in case the marker frame is being torn down
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nsChangeHint changeHint =
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nsChangeHint(nsChangeHint_RepaintFrame);
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// Don't need to request ReflowFrame if we're being reflowed.
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if (!(frame->GetStateBits() & NS_FRAME_IN_REFLOW)) {
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NS_UpdateHint(changeHint, nsChangeHint_InvalidateRenderingObservers);
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// XXXjwatt: We need to unify SVG into standard reflow so we can just use
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// nsChangeHint_NeedReflow | nsChangeHint_NeedDirtyReflow here.
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// XXXSDL KILL THIS!!!
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nsSVGUtils::ScheduleReflowSVG(frame);
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}
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frame->PresContext()->RestyleManager()->PostRestyleEvent(
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frame->GetContent()->AsElement(), nsRestyleHint(0), changeHint);
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}
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bool
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nsSVGTextPathProperty::TargetIsValid()
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{
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Element* target = GetTarget();
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return target && target->IsSVGElement(nsGkAtoms::path);
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}
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void
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nsSVGTextPathProperty::DoUpdate()
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{
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nsSVGRenderingObserverProperty::DoUpdate();
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nsIFrame* frame = mFrameReference.Get();
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if (!frame)
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return;
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NS_ASSERTION(frame->IsFrameOfType(nsIFrame::eSVG) || frame->IsSVGText(),
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"SVG frame expected");
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// Avoid getting into an infinite loop of reflows if the <textPath> is
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// pointing to one of its ancestors. TargetIsValid returns true iff
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// the target element is a <path> element, and we would not have this
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// nsSVGTextPathProperty if this <textPath> were a descendant of the
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// target <path>.
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//
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// Note that we still have to post the restyle event when we
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// change from being valid to invalid, so that mPositions on the
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// SVGTextFrame gets updated, skipping the <textPath>, ensuring
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// that nothing gets painted for that element.
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bool nowValid = TargetIsValid();
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if (!mValid && !nowValid) {
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// Just return if we were previously invalid, and are still invalid.
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return;
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}
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mValid = nowValid;
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// Repaint asynchronously in case the path frame is being torn down
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nsChangeHint changeHint =
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nsChangeHint(nsChangeHint_RepaintFrame | nsChangeHint_UpdateTextPath);
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frame->PresContext()->RestyleManager()->PostRestyleEvent(
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frame->GetContent()->AsElement(), nsRestyleHint(0), changeHint);
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}
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static void
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InvalidateAllContinuations(nsIFrame* aFrame)
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{
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for (nsIFrame* f = aFrame; f;
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f = nsLayoutUtils::GetNextContinuationOrIBSplitSibling(f)) {
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f->InvalidateFrame();
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}
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}
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void
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nsSVGPaintingProperty::DoUpdate()
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{
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nsSVGRenderingObserverProperty::DoUpdate();
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nsIFrame* frame = mFrameReference.Get();
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if (!frame)
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return;
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if (frame->GetStateBits() & NS_FRAME_SVG_LAYOUT) {
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nsLayoutUtils::PostRestyleEvent(
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frame->GetContent()->AsElement(), nsRestyleHint(0),
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nsChangeHint_InvalidateRenderingObservers);
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frame->InvalidateFrameSubtree();
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} else {
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InvalidateAllContinuations(frame);
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}
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}
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static nsSVGRenderingObserver *
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CreateMarkerProperty(nsIURI *aURI, nsIFrame *aFrame, bool aReferenceImage)
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{ return new nsSVGMarkerProperty(aURI, aFrame, aReferenceImage); }
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static nsSVGRenderingObserver *
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CreateTextPathProperty(nsIURI *aURI, nsIFrame *aFrame, bool aReferenceImage)
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{ return new nsSVGTextPathProperty(aURI, aFrame, aReferenceImage); }
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static nsSVGRenderingObserver *
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CreatePaintingProperty(nsIURI *aURI, nsIFrame *aFrame, bool aReferenceImage)
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{ return new nsSVGPaintingProperty(aURI, aFrame, aReferenceImage); }
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static nsSVGRenderingObserver *
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GetEffectProperty(nsIURI *aURI, nsIFrame *aFrame,
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const FramePropertyDescriptor *aProperty,
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nsSVGRenderingObserver * (* aCreate)(nsIURI *, nsIFrame *, bool))
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{
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if (!aURI)
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return nullptr;
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FrameProperties props = aFrame->Properties();
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nsSVGRenderingObserver *prop =
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static_cast<nsSVGRenderingObserver*>(props.Get(aProperty));
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if (prop)
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return prop;
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prop = aCreate(aURI, aFrame, false);
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if (!prop)
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return nullptr;
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NS_ADDREF(prop);
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props.Set(aProperty, static_cast<nsISupports*>(prop));
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return prop;
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}
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static nsSVGFilterProperty*
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GetOrCreateFilterProperty(nsIFrame *aFrame)
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{
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const nsStyleSVGReset* style = aFrame->StyleSVGReset();
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if (!style->HasFilters())
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return nullptr;
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FrameProperties props = aFrame->Properties();
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nsSVGFilterProperty *prop =
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static_cast<nsSVGFilterProperty*>(props.Get(nsSVGEffects::FilterProperty()));
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if (prop)
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return prop;
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prop = new nsSVGFilterProperty(style->mFilters, aFrame);
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if (!prop)
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return nullptr;
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NS_ADDREF(prop);
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props.Set(nsSVGEffects::FilterProperty(), static_cast<nsISupports*>(prop));
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return prop;
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}
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nsSVGMarkerProperty *
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nsSVGEffects::GetMarkerProperty(nsIURI *aURI, nsIFrame *aFrame,
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const FramePropertyDescriptor *aProp)
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{
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MOZ_ASSERT(aFrame->GetType() == nsGkAtoms::svgPathGeometryFrame &&
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static_cast<nsSVGPathGeometryElement*>(aFrame->GetContent())->IsMarkable(),
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"Bad frame");
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return static_cast<nsSVGMarkerProperty*>(
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GetEffectProperty(aURI, aFrame, aProp, CreateMarkerProperty));
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}
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nsSVGTextPathProperty *
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nsSVGEffects::GetTextPathProperty(nsIURI *aURI, nsIFrame *aFrame,
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|
const FramePropertyDescriptor *aProp)
|
|
{
|
|
return static_cast<nsSVGTextPathProperty*>(
|
|
GetEffectProperty(aURI, aFrame, aProp, CreateTextPathProperty));
|
|
}
|
|
|
|
nsSVGPaintingProperty *
|
|
nsSVGEffects::GetPaintingProperty(nsIURI *aURI, nsIFrame *aFrame,
|
|
const FramePropertyDescriptor *aProp)
|
|
{
|
|
return static_cast<nsSVGPaintingProperty*>(
|
|
GetEffectProperty(aURI, aFrame, aProp, CreatePaintingProperty));
|
|
}
|
|
|
|
static nsSVGRenderingObserver *
|
|
GetEffectPropertyForURI(nsIURI *aURI, nsIFrame *aFrame,
|
|
const FramePropertyDescriptor *aProperty,
|
|
nsSVGRenderingObserver * (* aCreate)(nsIURI *, nsIFrame *, bool))
|
|
{
|
|
if (!aURI)
|
|
return nullptr;
|
|
|
|
FrameProperties props = aFrame->Properties();
|
|
nsSVGEffects::URIObserverHashtable *hashtable =
|
|
static_cast<nsSVGEffects::URIObserverHashtable*>(props.Get(aProperty));
|
|
if (!hashtable) {
|
|
hashtable = new nsSVGEffects::URIObserverHashtable();
|
|
props.Set(aProperty, hashtable);
|
|
}
|
|
nsSVGRenderingObserver* prop =
|
|
static_cast<nsSVGRenderingObserver*>(hashtable->GetWeak(aURI));
|
|
if (!prop) {
|
|
bool watchImage = aProperty == nsSVGEffects::BackgroundImageProperty();
|
|
prop = aCreate(aURI, aFrame, watchImage);
|
|
hashtable->Put(aURI, prop);
|
|
}
|
|
return prop;
|
|
}
|
|
|
|
nsSVGPaintingProperty *
|
|
nsSVGEffects::GetPaintingPropertyForURI(nsIURI *aURI, nsIFrame *aFrame,
|
|
const FramePropertyDescriptor *aProp)
|
|
{
|
|
return static_cast<nsSVGPaintingProperty*>(
|
|
GetEffectPropertyForURI(aURI, aFrame, aProp, CreatePaintingProperty));
|
|
}
|
|
|
|
nsSVGEffects::EffectProperties
|
|
nsSVGEffects::GetEffectProperties(nsIFrame *aFrame)
|
|
{
|
|
NS_ASSERTION(!aFrame->GetPrevContinuation(), "aFrame should be first continuation");
|
|
|
|
EffectProperties result;
|
|
const nsStyleSVGReset *style = aFrame->StyleSVGReset();
|
|
result.mFilter = GetOrCreateFilterProperty(aFrame);
|
|
if (style->mClipPath.GetType() == NS_STYLE_CLIP_PATH_URL) {
|
|
result.mClipPath =
|
|
GetPaintingProperty(style->mClipPath.GetURL(), aFrame, ClipPathProperty());
|
|
} else {
|
|
result.mClipPath = nullptr;
|
|
}
|
|
result.mMask =
|
|
GetPaintingProperty(style->mMask, aFrame, MaskProperty());
|
|
return result;
|
|
}
|
|
|
|
nsSVGPaintServerFrame *
|
|
nsSVGEffects::GetPaintServer(nsIFrame *aTargetFrame, const nsStyleSVGPaint *aPaint,
|
|
const FramePropertyDescriptor *aType)
|
|
{
|
|
if (aPaint->mType != eStyleSVGPaintType_Server)
|
|
return nullptr;
|
|
|
|
// If we're looking at a frame within SVG text, then we need to look up
|
|
// to find the right frame to get the painting property off. We should at
|
|
// least look up past a text frame, and if the text frame's parent is the
|
|
// anonymous block frame, then we look up to its parent (the SVGTextFrame).
|
|
nsIFrame* frame = aTargetFrame;
|
|
if (frame->GetContent()->IsNodeOfType(nsINode::eTEXT)) {
|
|
frame = frame->GetParent();
|
|
nsIFrame* grandparent = frame->GetParent();
|
|
if (grandparent && grandparent->GetType() == nsGkAtoms::svgTextFrame) {
|
|
frame = grandparent;
|
|
}
|
|
}
|
|
nsSVGPaintingProperty *property =
|
|
nsSVGEffects::GetPaintingProperty(aPaint->mPaint.mPaintServer, frame, aType);
|
|
if (!property)
|
|
return nullptr;
|
|
nsIFrame *result = property->GetReferencedFrame();
|
|
if (!result)
|
|
return nullptr;
|
|
|
|
nsIAtom *type = result->GetType();
|
|
if (type != nsGkAtoms::svgLinearGradientFrame &&
|
|
type != nsGkAtoms::svgRadialGradientFrame &&
|
|
type != nsGkAtoms::svgPatternFrame)
|
|
return nullptr;
|
|
|
|
return static_cast<nsSVGPaintServerFrame*>(result);
|
|
}
|
|
|
|
nsSVGClipPathFrame *
|
|
nsSVGEffects::EffectProperties::GetClipPathFrame(bool *aOK)
|
|
{
|
|
if (!mClipPath)
|
|
return nullptr;
|
|
nsSVGClipPathFrame *frame = static_cast<nsSVGClipPathFrame *>
|
|
(mClipPath->GetReferencedFrame(nsGkAtoms::svgClipPathFrame, aOK));
|
|
if (frame && aOK && *aOK) {
|
|
*aOK = frame->IsValid();
|
|
}
|
|
return frame;
|
|
}
|
|
|
|
nsSVGMaskFrame *
|
|
nsSVGEffects::EffectProperties::GetMaskFrame(bool *aOK)
|
|
{
|
|
if (!mMask)
|
|
return nullptr;
|
|
return static_cast<nsSVGMaskFrame *>
|
|
(mMask->GetReferencedFrame(nsGkAtoms::svgMaskFrame, aOK));
|
|
}
|
|
|
|
void
|
|
nsSVGEffects::UpdateEffects(nsIFrame *aFrame)
|
|
{
|
|
NS_ASSERTION(aFrame->GetContent()->IsElement(),
|
|
"aFrame's content should be an element");
|
|
|
|
FrameProperties props = aFrame->Properties();
|
|
props.Delete(FilterProperty());
|
|
props.Delete(MaskProperty());
|
|
props.Delete(ClipPathProperty());
|
|
props.Delete(MarkerBeginProperty());
|
|
props.Delete(MarkerMiddleProperty());
|
|
props.Delete(MarkerEndProperty());
|
|
props.Delete(FillProperty());
|
|
props.Delete(StrokeProperty());
|
|
props.Delete(BackgroundImageProperty());
|
|
|
|
// Ensure that the filter is repainted correctly
|
|
// We can't do that in DoUpdate as the referenced frame may not be valid
|
|
GetOrCreateFilterProperty(aFrame);
|
|
|
|
if (aFrame->GetType() == nsGkAtoms::svgPathGeometryFrame &&
|
|
static_cast<nsSVGPathGeometryElement*>(aFrame->GetContent())->IsMarkable()) {
|
|
// Set marker properties here to avoid reference loops
|
|
const nsStyleSVG *style = aFrame->StyleSVG();
|
|
GetEffectProperty(style->mMarkerStart, aFrame, MarkerBeginProperty(),
|
|
CreateMarkerProperty);
|
|
GetEffectProperty(style->mMarkerMid, aFrame, MarkerMiddleProperty(),
|
|
CreateMarkerProperty);
|
|
GetEffectProperty(style->mMarkerEnd, aFrame, MarkerEndProperty(),
|
|
CreateMarkerProperty);
|
|
}
|
|
}
|
|
|
|
nsSVGFilterProperty *
|
|
nsSVGEffects::GetFilterProperty(nsIFrame *aFrame)
|
|
{
|
|
NS_ASSERTION(!aFrame->GetPrevContinuation(), "aFrame should be first continuation");
|
|
|
|
if (!aFrame->StyleSVGReset()->HasFilters())
|
|
return nullptr;
|
|
|
|
return static_cast<nsSVGFilterProperty *>
|
|
(aFrame->Properties().Get(FilterProperty()));
|
|
}
|
|
|
|
void
|
|
nsSVGRenderingObserverList::InvalidateAll()
|
|
{
|
|
if (mObservers.Count() == 0)
|
|
return;
|
|
|
|
nsAutoTArray<nsSVGRenderingObserver*,10> observers;
|
|
|
|
for (auto it = mObservers.Iter(); !it.Done(); it.Next()) {
|
|
observers.AppendElement(it.Get()->GetKey());
|
|
}
|
|
mObservers.Clear();
|
|
|
|
for (uint32_t i = 0; i < observers.Length(); ++i) {
|
|
observers[i]->InvalidateViaReferencedElement();
|
|
}
|
|
}
|
|
|
|
void
|
|
nsSVGRenderingObserverList::InvalidateAllForReflow()
|
|
{
|
|
if (mObservers.Count() == 0)
|
|
return;
|
|
|
|
nsAutoTArray<nsSVGRenderingObserver*,10> observers;
|
|
|
|
for (auto it = mObservers.Iter(); !it.Done(); it.Next()) {
|
|
nsSVGRenderingObserver* obs = it.Get()->GetKey();
|
|
if (obs->ObservesReflow()) {
|
|
observers.AppendElement(obs);
|
|
it.Remove();
|
|
}
|
|
}
|
|
|
|
for (uint32_t i = 0; i < observers.Length(); ++i) {
|
|
observers[i]->InvalidateViaReferencedElement();
|
|
}
|
|
}
|
|
|
|
void
|
|
nsSVGRenderingObserverList::RemoveAll()
|
|
{
|
|
nsAutoTArray<nsSVGRenderingObserver*,10> observers;
|
|
|
|
for (auto it = mObservers.Iter(); !it.Done(); it.Next()) {
|
|
observers.AppendElement(it.Get()->GetKey());
|
|
}
|
|
mObservers.Clear();
|
|
|
|
// Our list is now cleared. We need to notify the observers we've removed,
|
|
// so they can update their state & remove themselves as mutation-observers.
|
|
for (uint32_t i = 0; i < observers.Length(); ++i) {
|
|
observers[i]->NotifyEvictedFromRenderingObserverList();
|
|
}
|
|
}
|
|
|
|
void
|
|
nsSVGEffects::AddRenderingObserver(Element *aElement, nsSVGRenderingObserver *aObserver)
|
|
{
|
|
nsSVGRenderingObserverList *observerList = GetObserverList(aElement);
|
|
if (!observerList) {
|
|
observerList = new nsSVGRenderingObserverList();
|
|
if (!observerList)
|
|
return;
|
|
aElement->SetProperty(nsGkAtoms::renderingobserverlist, observerList,
|
|
nsINode::DeleteProperty<nsSVGRenderingObserverList>);
|
|
}
|
|
aElement->SetHasRenderingObservers(true);
|
|
observerList->Add(aObserver);
|
|
}
|
|
|
|
void
|
|
nsSVGEffects::RemoveRenderingObserver(Element *aElement, nsSVGRenderingObserver *aObserver)
|
|
{
|
|
nsSVGRenderingObserverList *observerList = GetObserverList(aElement);
|
|
if (observerList) {
|
|
NS_ASSERTION(observerList->Contains(aObserver),
|
|
"removing observer from an element we're not observing?");
|
|
observerList->Remove(aObserver);
|
|
if (observerList->IsEmpty()) {
|
|
aElement->SetHasRenderingObservers(false);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
nsSVGEffects::RemoveAllRenderingObservers(Element *aElement)
|
|
{
|
|
nsSVGRenderingObserverList *observerList = GetObserverList(aElement);
|
|
if (observerList) {
|
|
observerList->RemoveAll();
|
|
aElement->SetHasRenderingObservers(false);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsSVGEffects::InvalidateRenderingObservers(nsIFrame *aFrame)
|
|
{
|
|
NS_ASSERTION(!aFrame->GetPrevContinuation(), "aFrame must be first continuation");
|
|
|
|
if (!aFrame->GetContent()->IsElement())
|
|
return;
|
|
|
|
// If the rendering has changed, the bounds may well have changed too:
|
|
aFrame->Properties().Delete(nsSVGUtils::ObjectBoundingBoxProperty());
|
|
|
|
nsSVGRenderingObserverList *observerList =
|
|
GetObserverList(aFrame->GetContent()->AsElement());
|
|
if (observerList) {
|
|
observerList->InvalidateAll();
|
|
return;
|
|
}
|
|
|
|
// Check ancestor SVG containers. The root frame cannot be of type
|
|
// eSVGContainer so we don't have to check f for null here.
|
|
for (nsIFrame *f = aFrame->GetParent();
|
|
f->IsFrameOfType(nsIFrame::eSVGContainer); f = f->GetParent()) {
|
|
if (f->GetContent()->IsElement()) {
|
|
observerList = GetObserverList(f->GetContent()->AsElement());
|
|
if (observerList) {
|
|
observerList->InvalidateAll();
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
nsSVGEffects::InvalidateDirectRenderingObservers(Element *aElement, uint32_t aFlags /* = 0 */)
|
|
{
|
|
nsIFrame* frame = aElement->GetPrimaryFrame();
|
|
if (frame) {
|
|
// If the rendering has changed, the bounds may well have changed too:
|
|
frame->Properties().Delete(nsSVGUtils::ObjectBoundingBoxProperty());
|
|
}
|
|
|
|
if (aElement->HasRenderingObservers()) {
|
|
nsSVGRenderingObserverList *observerList = GetObserverList(aElement);
|
|
if (observerList) {
|
|
if (aFlags & INVALIDATE_REFLOW) {
|
|
observerList->InvalidateAllForReflow();
|
|
} else {
|
|
observerList->InvalidateAll();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
nsSVGEffects::InvalidateDirectRenderingObservers(nsIFrame *aFrame, uint32_t aFlags /* = 0 */)
|
|
{
|
|
if (aFrame->GetContent() && aFrame->GetContent()->IsElement()) {
|
|
InvalidateDirectRenderingObservers(aFrame->GetContent()->AsElement(), aFlags);
|
|
}
|
|
}
|