зеркало из https://github.com/mozilla/gecko-dev.git
948 строки
28 KiB
C++
948 строки
28 KiB
C++
/* vim: set shiftwidth=2 tabstop=8 autoindent cindent expandtab: */
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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 "AnimationCommon.h"
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#include "nsTransitionManager.h"
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#include "nsAnimationManager.h"
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#include "ActiveLayerTracker.h"
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#include "gfxPlatform.h"
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#include "nsRuleData.h"
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#include "nsCSSPropertySet.h"
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#include "nsCSSValue.h"
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#include "nsCycleCollectionParticipant.h"
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#include "nsDOMMutationObserver.h"
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#include "nsStyleContext.h"
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#include "nsIFrame.h"
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#include "nsLayoutUtils.h"
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#include "mozilla/LookAndFeel.h"
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#include "LayerAnimationInfo.h" // For LayerAnimationInfo::sRecords
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#include "Layers.h"
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#include "FrameLayerBuilder.h"
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#include "nsDisplayList.h"
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#include "mozilla/MemoryReporting.h"
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#include "mozilla/dom/KeyframeEffect.h"
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#include "RestyleManager.h"
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#include "nsRuleProcessorData.h"
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#include "nsStyleSet.h"
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#include "nsStyleChangeList.h"
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using mozilla::layers::Layer;
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using mozilla::dom::Animation;
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using mozilla::dom::KeyframeEffectReadOnly;
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namespace mozilla {
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/* static */ bool
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IsGeometricProperty(nsCSSProperty aProperty)
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{
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switch (aProperty) {
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case eCSSProperty_bottom:
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case eCSSProperty_height:
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case eCSSProperty_left:
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case eCSSProperty_right:
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case eCSSProperty_top:
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case eCSSProperty_width:
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return true;
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default:
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return false;
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}
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}
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CommonAnimationManager::CommonAnimationManager(nsPresContext *aPresContext)
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: mPresContext(aPresContext)
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{
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}
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CommonAnimationManager::~CommonAnimationManager()
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{
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MOZ_ASSERT(!mPresContext, "Disconnect should have been called");
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}
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void
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CommonAnimationManager::Disconnect()
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{
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// Content nodes might outlive the transition or animation manager.
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RemoveAllElementCollections();
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mPresContext = nullptr;
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}
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void
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CommonAnimationManager::AddElementCollection(AnimationCollection* aCollection)
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{
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mElementCollections.insertBack(aCollection);
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}
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void
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CommonAnimationManager::RemoveAllElementCollections()
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{
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while (AnimationCollection* head = mElementCollections.getFirst()) {
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head->Destroy(); // Note: this removes 'head' from mElementCollections.
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}
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}
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AnimationCollection*
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CommonAnimationManager::GetAnimationCollection(const nsIFrame* aFrame)
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{
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nsIContent* content = aFrame->GetContent();
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if (!content) {
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return nullptr;
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}
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nsIAtom* animProp;
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if (aFrame->IsGeneratedContentFrame()) {
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nsIFrame* parent = aFrame->GetParent();
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if (parent->IsGeneratedContentFrame()) {
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return nullptr;
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}
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nsIAtom* name = content->NodeInfo()->NameAtom();
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if (name == nsGkAtoms::mozgeneratedcontentbefore) {
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animProp = GetAnimationsBeforeAtom();
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} else if (name == nsGkAtoms::mozgeneratedcontentafter) {
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animProp = GetAnimationsAfterAtom();
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} else {
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return nullptr;
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}
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content = content->GetParent();
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if (!content) {
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return nullptr;
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}
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} else {
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if (!content->MayHaveAnimations()) {
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return nullptr;
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}
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animProp = GetAnimationsAtom();
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}
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return static_cast<AnimationCollection*>(content->GetProperty(animProp));
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}
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AnimationCollection*
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CommonAnimationManager::GetAnimationsForCompositor(const nsIFrame* aFrame,
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nsCSSProperty aProperty)
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{
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AnimationCollection* collection = GetAnimationCollection(aFrame);
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if (!collection ||
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!collection->HasCurrentAnimationOfProperty(aProperty) ||
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!collection->CanPerformOnCompositorThread(
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AnimationCollection::CanAnimate_AllowPartial)) {
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return nullptr;
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}
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// This animation can be done on the compositor.
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return collection;
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}
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nsRestyleHint
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CommonAnimationManager::HasStateDependentStyle(StateRuleProcessorData* aData)
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{
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return nsRestyleHint(0);
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}
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nsRestyleHint
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CommonAnimationManager::HasStateDependentStyle(PseudoElementStateRuleProcessorData* aData)
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{
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return nsRestyleHint(0);
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}
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bool
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CommonAnimationManager::HasDocumentStateDependentStyle(StateRuleProcessorData* aData)
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{
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return false;
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}
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nsRestyleHint
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CommonAnimationManager::HasAttributeDependentStyle(
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AttributeRuleProcessorData* aData,
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RestyleHintData& aRestyleHintDataResult)
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{
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return nsRestyleHint(0);
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}
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/* virtual */ bool
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CommonAnimationManager::MediumFeaturesChanged(nsPresContext* aPresContext)
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{
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return false;
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}
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/* virtual */ void
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CommonAnimationManager::RulesMatching(ElementRuleProcessorData* aData)
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{
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MOZ_ASSERT(aData->mPresContext == mPresContext,
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"pres context mismatch");
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nsIStyleRule *rule =
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GetAnimationRule(aData->mElement,
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nsCSSPseudoElements::ePseudo_NotPseudoElement);
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if (rule) {
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aData->mRuleWalker->Forward(rule);
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aData->mRuleWalker->CurrentNode()->SetIsAnimationRule();
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}
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}
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/* virtual */ void
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CommonAnimationManager::RulesMatching(PseudoElementRuleProcessorData* aData)
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{
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MOZ_ASSERT(aData->mPresContext == mPresContext,
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"pres context mismatch");
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if (aData->mPseudoType != nsCSSPseudoElements::ePseudo_before &&
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aData->mPseudoType != nsCSSPseudoElements::ePseudo_after) {
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return;
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}
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// FIXME: Do we really want to be the only thing keeping a
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// pseudo-element alive? I *think* the non-animation restyle should
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// handle that, but should add a test.
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nsIStyleRule *rule = GetAnimationRule(aData->mElement, aData->mPseudoType);
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if (rule) {
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aData->mRuleWalker->Forward(rule);
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aData->mRuleWalker->CurrentNode()->SetIsAnimationRule();
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}
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}
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/* virtual */ void
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CommonAnimationManager::RulesMatching(AnonBoxRuleProcessorData* aData)
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{
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}
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#ifdef MOZ_XUL
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/* virtual */ void
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CommonAnimationManager::RulesMatching(XULTreeRuleProcessorData* aData)
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{
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}
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#endif
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/* virtual */ size_t
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CommonAnimationManager::SizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf) const
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{
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// Measurement of the following members may be added later if DMD finds it is
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// worthwhile:
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// - mElementCollections
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//
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// The following members are not measured
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// - mPresContext, because it's non-owning
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return 0;
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}
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/* virtual */ size_t
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CommonAnimationManager::SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const
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{
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return aMallocSizeOf(this) + SizeOfExcludingThis(aMallocSizeOf);
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}
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void
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CommonAnimationManager::AddStyleUpdatesTo(RestyleTracker& aTracker)
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{
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TimeStamp now = mPresContext->RefreshDriver()->MostRecentRefresh();
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for (AnimationCollection* collection = mElementCollections.getFirst();
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collection; collection = collection->getNext()) {
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collection->EnsureStyleRuleFor(now);
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dom::Element* elementToRestyle = collection->GetElementToRestyle();
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if (elementToRestyle) {
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nsRestyleHint rshint = collection->IsForTransitions()
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? eRestyle_CSSTransitions : eRestyle_CSSAnimations;
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aTracker.AddPendingRestyle(elementToRestyle, rshint, nsChangeHint(0));
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}
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}
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}
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/* static */ bool
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CommonAnimationManager::ExtractComputedValueForTransition(
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nsCSSProperty aProperty,
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nsStyleContext* aStyleContext,
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StyleAnimationValue& aComputedValue)
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{
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bool result = StyleAnimationValue::ExtractComputedValue(aProperty,
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aStyleContext,
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aComputedValue);
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if (aProperty == eCSSProperty_visibility) {
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MOZ_ASSERT(aComputedValue.GetUnit() ==
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StyleAnimationValue::eUnit_Enumerated,
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"unexpected unit");
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aComputedValue.SetIntValue(aComputedValue.GetIntValue(),
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StyleAnimationValue::eUnit_Visibility);
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}
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return result;
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}
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AnimationCollection*
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CommonAnimationManager::GetAnimations(dom::Element *aElement,
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nsCSSPseudoElements::Type aPseudoType,
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bool aCreateIfNeeded)
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{
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if (!aCreateIfNeeded && mElementCollections.isEmpty()) {
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// Early return for the most common case.
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return nullptr;
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}
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nsIAtom *propName;
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if (aPseudoType == nsCSSPseudoElements::ePseudo_NotPseudoElement) {
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propName = GetAnimationsAtom();
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} else if (aPseudoType == nsCSSPseudoElements::ePseudo_before) {
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propName = GetAnimationsBeforeAtom();
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} else if (aPseudoType == nsCSSPseudoElements::ePseudo_after) {
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propName = GetAnimationsAfterAtom();
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} else {
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NS_ASSERTION(!aCreateIfNeeded,
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"should never try to create transitions for pseudo "
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"other than :before or :after");
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return nullptr;
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}
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AnimationCollection* collection =
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static_cast<AnimationCollection*>(aElement->GetProperty(propName));
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if (!collection && aCreateIfNeeded) {
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// FIXME: Consider arena-allocating?
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collection = new AnimationCollection(aElement, propName, this);
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nsresult rv =
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aElement->SetProperty(propName, collection,
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&AnimationCollection::PropertyDtor, false);
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if (NS_FAILED(rv)) {
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NS_WARNING("SetProperty failed");
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// The collection must be destroyed via PropertyDtor, otherwise
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// mCalledPropertyDtor assertion is triggered in destructor.
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AnimationCollection::PropertyDtor(aElement, propName, collection, nullptr);
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return nullptr;
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}
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if (aPseudoType == nsCSSPseudoElements::ePseudo_NotPseudoElement) {
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aElement->SetMayHaveAnimations();
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}
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AddElementCollection(collection);
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}
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return collection;
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}
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void
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CommonAnimationManager::FlushAnimations()
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{
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TimeStamp now = mPresContext->RefreshDriver()->MostRecentRefresh();
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for (AnimationCollection* collection = mElementCollections.getFirst();
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collection; collection = collection->getNext()) {
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if (collection->mStyleRuleRefreshTime == now) {
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continue;
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}
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MOZ_ASSERT(collection->mElement->GetComposedDoc() ==
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mPresContext->Document(),
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"Should not have a transition/animation collection for an "
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"element that is not part of the document tree");
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collection->RequestRestyle(AnimationCollection::RestyleType::Standard);
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}
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}
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nsIStyleRule*
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CommonAnimationManager::GetAnimationRule(mozilla::dom::Element* aElement,
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nsCSSPseudoElements::Type aPseudoType)
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{
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MOZ_ASSERT(
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aPseudoType == nsCSSPseudoElements::ePseudo_NotPseudoElement ||
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aPseudoType == nsCSSPseudoElements::ePseudo_before ||
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aPseudoType == nsCSSPseudoElements::ePseudo_after,
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"forbidden pseudo type");
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if (!mPresContext->IsDynamic()) {
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// For print or print preview, ignore animations.
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return nullptr;
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}
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AnimationCollection* collection =
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GetAnimations(aElement, aPseudoType, false);
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if (!collection) {
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return nullptr;
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}
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RestyleManager* restyleManager = mPresContext->RestyleManager();
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if (restyleManager->SkipAnimationRules()) {
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return nullptr;
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}
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collection->EnsureStyleRuleFor(
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mPresContext->RefreshDriver()->MostRecentRefresh());
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return collection->mStyleRule;
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}
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void
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CommonAnimationManager::ClearIsRunningOnCompositor(const nsIFrame* aFrame,
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nsCSSProperty aProperty)
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{
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AnimationCollection* collection = GetAnimationCollection(aFrame);
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if (collection) {
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collection->ClearIsRunningOnCompositor(aProperty);
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}
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}
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NS_IMPL_ISUPPORTS(AnimValuesStyleRule, nsIStyleRule)
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/* virtual */ void
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AnimValuesStyleRule::MapRuleInfoInto(nsRuleData* aRuleData)
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{
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nsStyleContext *contextParent = aRuleData->mStyleContext->GetParent();
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if (contextParent && contextParent->HasPseudoElementData()) {
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// Don't apply transitions or animations to things inside of
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// pseudo-elements.
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// FIXME (Bug 522599): Add tests for this.
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// Prevent structs from being cached on the rule node since we're inside
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// a pseudo-element, as we could determine cacheability differently
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// when walking the rule tree for a style context that is not inside
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// a pseudo-element. Note that nsRuleNode::GetStyle##name_ and GetStyleData
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// will never look at cached structs when we're animating things inside
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// a pseduo-element, so that we don't incorrectly return a struct that
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// is only appropriate for non-pseudo-elements.
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aRuleData->mConditions.SetUncacheable();
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return;
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}
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for (uint32_t i = 0, i_end = mPropertyValuePairs.Length(); i < i_end; ++i) {
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PropertyValuePair &cv = mPropertyValuePairs[i];
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if (aRuleData->mSIDs & nsCachedStyleData::GetBitForSID(
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nsCSSProps::kSIDTable[cv.mProperty]))
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{
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nsCSSValue *prop = aRuleData->ValueFor(cv.mProperty);
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if (prop->GetUnit() == eCSSUnit_Null) {
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#ifdef DEBUG
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bool ok =
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#endif
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StyleAnimationValue::UncomputeValue(cv.mProperty, cv.mValue, *prop);
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MOZ_ASSERT(ok, "could not store computed value");
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}
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}
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}
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}
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#ifdef DEBUG
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/* virtual */ void
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AnimValuesStyleRule::List(FILE* out, int32_t aIndent) const
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{
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nsAutoCString str;
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for (int32_t index = aIndent; --index >= 0; ) {
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str.AppendLiteral(" ");
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}
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str.AppendLiteral("[anim values] { ");
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for (uint32_t i = 0, i_end = mPropertyValuePairs.Length(); i < i_end; ++i) {
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const PropertyValuePair &pair = mPropertyValuePairs[i];
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str.Append(nsCSSProps::GetStringValue(pair.mProperty));
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str.AppendLiteral(": ");
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nsAutoString value;
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StyleAnimationValue::UncomputeValue(pair.mProperty, pair.mValue, value);
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AppendUTF16toUTF8(value, str);
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str.AppendLiteral("; ");
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}
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str.AppendLiteral("}\n");
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fprintf_stderr(out, "%s", str.get());
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}
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#endif
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bool
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AnimationCollection::CanAnimatePropertyOnCompositor(
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const dom::Element *aElement,
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nsCSSProperty aProperty,
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CanAnimateFlags aFlags)
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{
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bool shouldLog = nsLayoutUtils::IsAnimationLoggingEnabled();
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if (!gfxPlatform::OffMainThreadCompositingEnabled()) {
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if (shouldLog) {
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nsCString message;
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message.AppendLiteral("Performance warning: Compositor disabled");
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LogAsyncAnimationFailure(message);
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}
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return false;
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}
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nsIFrame* frame = nsLayoutUtils::GetStyleFrame(aElement);
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if (IsGeometricProperty(aProperty)) {
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if (shouldLog) {
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nsCString message;
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message.AppendLiteral("Performance warning: Async animation of geometric property '");
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message.Append(nsCSSProps::GetStringValue(aProperty));
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message.AppendLiteral("' is disabled");
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LogAsyncAnimationFailure(message, aElement);
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}
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return false;
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}
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if (aProperty == eCSSProperty_transform) {
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if (frame->Combines3DTransformWithAncestors() ||
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frame->Extend3DContext()) {
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if (shouldLog) {
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nsCString message;
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message.AppendLiteral("Gecko bug: Async animation of 'preserve-3d' transforms is not supported. See bug 779598");
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LogAsyncAnimationFailure(message, aElement);
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}
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return false;
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}
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// Note that testing BackfaceIsHidden() is not a sufficient test for
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// what we need for animating backface-visibility correctly if we
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// remove the above test for Extend3DContext(); that would require
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// looking at backface-visibility on descendants as well.
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if (frame->StyleDisplay()->BackfaceIsHidden()) {
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if (shouldLog) {
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nsCString message;
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message.AppendLiteral("Gecko bug: Async animation of 'backface-visibility: hidden' transforms is not supported. See bug 1186204.");
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LogAsyncAnimationFailure(message, aElement);
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}
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return false;
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}
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if (frame->IsSVGTransformed()) {
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if (shouldLog) {
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nsCString message;
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message.AppendLiteral("Gecko bug: Async 'transform' animations of frames with SVG transforms is not supported. See bug 779599");
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LogAsyncAnimationFailure(message, aElement);
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}
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return false;
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}
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if (aFlags & CanAnimate_HasGeometricProperty) {
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if (shouldLog) {
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nsCString message;
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message.AppendLiteral("Performance warning: Async animation of 'transform' not possible due to presence of geometric properties");
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LogAsyncAnimationFailure(message, aElement);
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}
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return false;
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}
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}
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bool enabled = nsLayoutUtils::AreAsyncAnimationsEnabled();
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if (!enabled && shouldLog) {
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nsCString message;
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message.AppendLiteral("Performance warning: Async animations are disabled");
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LogAsyncAnimationFailure(message);
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}
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bool propertyAllowed = (aProperty == eCSSProperty_transform) ||
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(aProperty == eCSSProperty_opacity) ||
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(aFlags & CanAnimate_AllowPartial);
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return enabled && propertyAllowed;
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}
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/* static */ bool
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AnimationCollection::IsCompositorAnimationDisabledForFrame(
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nsIFrame* aFrame)
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{
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void* prop = aFrame->Properties().Get(nsIFrame::RefusedAsyncAnimation());
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return bool(reinterpret_cast<intptr_t>(prop));
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}
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bool
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AnimationCollection::CanPerformOnCompositorThread(
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CanAnimateFlags aFlags) const
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{
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dom::Element* element = GetElementToRestyle();
|
|
if (!element) {
|
|
return false;
|
|
}
|
|
nsIFrame* frame = nsLayoutUtils::GetStyleFrame(element);
|
|
if (!frame) {
|
|
return false;
|
|
}
|
|
|
|
for (size_t animIdx = mAnimations.Length(); animIdx-- != 0; ) {
|
|
const Animation* anim = mAnimations[animIdx];
|
|
if (!anim->IsPlaying()) {
|
|
continue;
|
|
}
|
|
|
|
const KeyframeEffectReadOnly* effect = anim->GetEffect();
|
|
MOZ_ASSERT(effect, "A playing animation should have an effect");
|
|
|
|
for (size_t propIdx = 0, propEnd = effect->Properties().Length();
|
|
propIdx != propEnd; ++propIdx) {
|
|
if (IsGeometricProperty(effect->Properties()[propIdx].mProperty)) {
|
|
aFlags = CanAnimateFlags(aFlags | CanAnimate_HasGeometricProperty);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
bool existsProperty = false;
|
|
for (size_t animIdx = mAnimations.Length(); animIdx-- != 0; ) {
|
|
const Animation* anim = mAnimations[animIdx];
|
|
if (!anim->IsPlaying()) {
|
|
continue;
|
|
}
|
|
|
|
const KeyframeEffectReadOnly* effect = anim->GetEffect();
|
|
MOZ_ASSERT(effect, "A playing animation should have an effect");
|
|
|
|
existsProperty = existsProperty || effect->Properties().Length() > 0;
|
|
|
|
for (size_t propIdx = 0, propEnd = effect->Properties().Length();
|
|
propIdx != propEnd; ++propIdx) {
|
|
const AnimationProperty& prop = effect->Properties()[propIdx];
|
|
if (!CanAnimatePropertyOnCompositor(element,
|
|
prop.mProperty,
|
|
aFlags) ||
|
|
IsCompositorAnimationDisabledForFrame(frame)) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
// No properties to animate
|
|
if (!existsProperty) {
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
AnimationCollection::HasCurrentAnimationOfProperty(nsCSSProperty
|
|
aProperty) const
|
|
{
|
|
for (Animation* animation : mAnimations) {
|
|
if (animation->HasCurrentEffect() &&
|
|
animation->GetEffect()->HasAnimationOfProperty(aProperty)) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/*static*/ nsString
|
|
AnimationCollection::PseudoTypeAsString(nsCSSPseudoElements::Type aPseudoType)
|
|
{
|
|
switch (aPseudoType) {
|
|
case nsCSSPseudoElements::ePseudo_before:
|
|
return NS_LITERAL_STRING("::before");
|
|
case nsCSSPseudoElements::ePseudo_after:
|
|
return NS_LITERAL_STRING("::after");
|
|
default:
|
|
MOZ_ASSERT(aPseudoType == nsCSSPseudoElements::ePseudo_NotPseudoElement,
|
|
"Unexpected pseudo type");
|
|
return EmptyString();
|
|
}
|
|
}
|
|
|
|
mozilla::dom::Element*
|
|
AnimationCollection::GetElementToRestyle() const
|
|
{
|
|
if (IsForElement()) {
|
|
return mElement;
|
|
}
|
|
|
|
nsIFrame* primaryFrame = mElement->GetPrimaryFrame();
|
|
if (!primaryFrame) {
|
|
return nullptr;
|
|
}
|
|
nsIFrame* pseudoFrame;
|
|
if (IsForBeforePseudo()) {
|
|
pseudoFrame = nsLayoutUtils::GetBeforeFrame(primaryFrame);
|
|
} else if (IsForAfterPseudo()) {
|
|
pseudoFrame = nsLayoutUtils::GetAfterFrame(primaryFrame);
|
|
} else {
|
|
MOZ_ASSERT(false, "unknown mElementProperty");
|
|
return nullptr;
|
|
}
|
|
if (!pseudoFrame) {
|
|
return nullptr;
|
|
}
|
|
return pseudoFrame->GetContent()->AsElement();
|
|
}
|
|
|
|
/* static */ void
|
|
AnimationCollection::LogAsyncAnimationFailure(nsCString& aMessage,
|
|
const nsIContent* aContent)
|
|
{
|
|
if (aContent) {
|
|
aMessage.AppendLiteral(" [");
|
|
aMessage.Append(nsAtomCString(aContent->NodeInfo()->NameAtom()));
|
|
|
|
nsIAtom* id = aContent->GetID();
|
|
if (id) {
|
|
aMessage.AppendLiteral(" with id '");
|
|
aMessage.Append(nsAtomCString(aContent->GetID()));
|
|
aMessage.Append('\'');
|
|
}
|
|
aMessage.Append(']');
|
|
}
|
|
aMessage.Append('\n');
|
|
printf_stderr("%s", aMessage.get());
|
|
}
|
|
|
|
/*static*/ void
|
|
AnimationCollection::PropertyDtor(void *aObject, nsIAtom *aPropertyName,
|
|
void *aPropertyValue, void *aData)
|
|
{
|
|
AnimationCollection* collection =
|
|
static_cast<AnimationCollection*>(aPropertyValue);
|
|
#ifdef DEBUG
|
|
MOZ_ASSERT(!collection->mCalledPropertyDtor, "can't call dtor twice");
|
|
collection->mCalledPropertyDtor = true;
|
|
#endif
|
|
{
|
|
nsAutoAnimationMutationBatch mb(collection->mElement->OwnerDoc());
|
|
|
|
for (size_t animIdx = collection->mAnimations.Length(); animIdx-- != 0; ) {
|
|
collection->mAnimations[animIdx]->CancelFromStyle();
|
|
}
|
|
}
|
|
delete collection;
|
|
}
|
|
|
|
void
|
|
AnimationCollection::Tick()
|
|
{
|
|
for (size_t animIdx = 0, animEnd = mAnimations.Length();
|
|
animIdx != animEnd; animIdx++) {
|
|
mAnimations[animIdx]->Tick();
|
|
}
|
|
}
|
|
|
|
void
|
|
AnimationCollection::EnsureStyleRuleFor(TimeStamp aRefreshTime)
|
|
{
|
|
mHasPendingAnimationRestyle = false;
|
|
|
|
if (!mStyleChanging) {
|
|
mStyleRuleRefreshTime = aRefreshTime;
|
|
return;
|
|
}
|
|
|
|
if (!mStyleRuleRefreshTime.IsNull() &&
|
|
mStyleRuleRefreshTime == aRefreshTime) {
|
|
// mStyleRule may be null and valid, if we have no style to apply.
|
|
return;
|
|
}
|
|
|
|
if (mManager->IsAnimationManager()) {
|
|
// Update cascade results before updating the style rule, since the
|
|
// cascade results can influence the style rule.
|
|
static_cast<nsAnimationManager*>(mManager)->MaybeUpdateCascadeResults(this);
|
|
}
|
|
|
|
mStyleRuleRefreshTime = aRefreshTime;
|
|
mStyleRule = nullptr;
|
|
// We'll set mStyleChanging to true below if necessary.
|
|
mStyleChanging = false;
|
|
|
|
// If multiple animations specify behavior for the same property the
|
|
// animation which occurs last in the value of animation-name wins.
|
|
// As a result, we iterate from last animation to first and, if a
|
|
// property has already been set, we don't leave it.
|
|
nsCSSPropertySet properties;
|
|
|
|
for (size_t animIdx = mAnimations.Length(); animIdx-- != 0; ) {
|
|
mAnimations[animIdx]->ComposeStyle(mStyleRule, properties, mStyleChanging);
|
|
}
|
|
}
|
|
|
|
bool
|
|
AnimationCollection::CanThrottleTransformChanges(TimeStamp aTime)
|
|
{
|
|
if (!nsLayoutUtils::AreAsyncAnimationsEnabled()) {
|
|
return false;
|
|
}
|
|
|
|
// If we know that the animation cannot cause overflow,
|
|
// we can just disable flushes for this animation.
|
|
|
|
// If we don't show scrollbars, we don't care about overflow.
|
|
if (LookAndFeel::GetInt(LookAndFeel::eIntID_ShowHideScrollbars) == 0) {
|
|
return true;
|
|
}
|
|
|
|
// If this animation can cause overflow, we can throttle some of the ticks.
|
|
if (!mStyleRuleRefreshTime.IsNull() &&
|
|
(aTime - mStyleRuleRefreshTime) < TimeDuration::FromMilliseconds(200)) {
|
|
return true;
|
|
}
|
|
|
|
dom::Element* element = GetElementToRestyle();
|
|
if (!element) {
|
|
return false;
|
|
}
|
|
|
|
// If the nearest scrollable ancestor has overflow:hidden,
|
|
// we don't care about overflow.
|
|
nsIScrollableFrame* scrollable = nsLayoutUtils::GetNearestScrollableFrame(
|
|
nsLayoutUtils::GetStyleFrame(element));
|
|
if (!scrollable) {
|
|
return true;
|
|
}
|
|
|
|
ScrollbarStyles ss = scrollable->GetScrollbarStyles();
|
|
if (ss.mVertical == NS_STYLE_OVERFLOW_HIDDEN &&
|
|
ss.mHorizontal == NS_STYLE_OVERFLOW_HIDDEN &&
|
|
scrollable->GetLogicalScrollPosition() == nsPoint(0, 0)) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
AnimationCollection::CanThrottleAnimation(TimeStamp aTime)
|
|
{
|
|
dom::Element* element = GetElementToRestyle();
|
|
if (!element) {
|
|
return false;
|
|
}
|
|
nsIFrame* frame = nsLayoutUtils::GetStyleFrame(element);
|
|
if (!frame) {
|
|
return false;
|
|
}
|
|
|
|
for (const LayerAnimationInfo::Record& record :
|
|
LayerAnimationInfo::sRecords) {
|
|
// We only need to worry about *current* animations here.
|
|
// - If we have a newly-finished animation, Animation::CanThrottle will
|
|
// detect that and force an unthrottled sample.
|
|
// - If we have a newly-idle animation, then whatever caused the animation
|
|
// to be idle will update the animation generation so we'll return false
|
|
// from the layer generation check below for any other running compositor
|
|
// animations (and if no other compositor animations exist we won't get
|
|
// this far).
|
|
if (!HasCurrentAnimationOfProperty(record.mProperty)) {
|
|
continue;
|
|
}
|
|
|
|
Layer* layer = FrameLayerBuilder::GetDedicatedLayer(
|
|
frame, record.mLayerType);
|
|
if (!layer || mAnimationGeneration > layer->GetAnimationGeneration()) {
|
|
return false;
|
|
}
|
|
|
|
if (record.mProperty == eCSSProperty_transform &&
|
|
!CanThrottleTransformChanges(aTime)) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void
|
|
AnimationCollection::ClearIsRunningOnCompositor(nsCSSProperty aProperty)
|
|
{
|
|
for (Animation* anim : mAnimations) {
|
|
dom::KeyframeEffectReadOnly* effect = anim->GetEffect();
|
|
if (effect) {
|
|
effect->SetIsRunningOnCompositor(aProperty, false);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
AnimationCollection::RequestRestyle(RestyleType aRestyleType)
|
|
{
|
|
MOZ_ASSERT(IsForElement() || IsForBeforePseudo() || IsForAfterPseudo(),
|
|
"Unexpected mElementProperty; might restyle too much");
|
|
|
|
nsPresContext* presContext = mManager->PresContext();
|
|
if (!presContext) {
|
|
// Pres context will be null after the manager is disconnected.
|
|
return;
|
|
}
|
|
|
|
// Steps for Restyle::Layer:
|
|
|
|
if (aRestyleType == RestyleType::Layer) {
|
|
mStyleRuleRefreshTime = TimeStamp();
|
|
mStyleChanging = true;
|
|
|
|
// Prompt layers to re-sync their animations.
|
|
presContext->ClearLastStyleUpdateForAllAnimations();
|
|
presContext->RestyleManager()->IncrementAnimationGeneration();
|
|
UpdateAnimationGeneration(presContext);
|
|
}
|
|
|
|
// Steps for RestyleType::Standard and above:
|
|
|
|
if (mHasPendingAnimationRestyle) {
|
|
return;
|
|
}
|
|
|
|
// Upgrade throttled restyles if other factors prevent
|
|
// throttling (e.g. async animations are not enabled).
|
|
if (aRestyleType == RestyleType::Throttled) {
|
|
TimeStamp now = presContext->RefreshDriver()->MostRecentRefresh();
|
|
if (!CanPerformOnCompositorThread(CanAnimateFlags(0)) ||
|
|
!CanThrottleAnimation(now)) {
|
|
aRestyleType = RestyleType::Standard;
|
|
}
|
|
}
|
|
|
|
if (aRestyleType >= RestyleType::Standard) {
|
|
mHasPendingAnimationRestyle = true;
|
|
PostRestyleForAnimation(presContext);
|
|
return;
|
|
}
|
|
|
|
// Steps for RestyleType::Throttled:
|
|
|
|
MOZ_ASSERT(aRestyleType == RestyleType::Throttled,
|
|
"Should have already handled all non-throttled restyles");
|
|
presContext->Document()->SetNeedStyleFlush();
|
|
}
|
|
|
|
void
|
|
AnimationCollection::UpdateAnimationGeneration(nsPresContext* aPresContext)
|
|
{
|
|
mAnimationGeneration =
|
|
aPresContext->RestyleManager()->GetAnimationGeneration();
|
|
}
|
|
|
|
void
|
|
AnimationCollection::UpdateCheckGeneration(
|
|
nsPresContext* aPresContext)
|
|
{
|
|
mCheckGeneration =
|
|
aPresContext->RestyleManager()->GetAnimationGeneration();
|
|
}
|
|
|
|
bool
|
|
AnimationCollection::HasCurrentAnimations() const
|
|
{
|
|
for (size_t animIdx = mAnimations.Length(); animIdx-- != 0; ) {
|
|
if (mAnimations[animIdx]->HasCurrentEffect()) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
AnimationCollection::HasCurrentAnimationsForProperties(
|
|
const nsCSSProperty* aProperties,
|
|
size_t aPropertyCount) const
|
|
{
|
|
for (size_t animIdx = mAnimations.Length(); animIdx-- != 0; ) {
|
|
const Animation& anim = *mAnimations[animIdx];
|
|
const KeyframeEffectReadOnly* effect = anim.GetEffect();
|
|
if (effect &&
|
|
effect->IsCurrent() &&
|
|
effect->HasAnimationOfProperties(aProperties, aPropertyCount)) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
nsPresContext*
|
|
OwningElementRef::GetRenderedPresContext() const
|
|
{
|
|
if (!mElement) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsIDocument* doc = mElement->GetComposedDoc();
|
|
if (!doc) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsIPresShell* shell = doc->GetShell();
|
|
if (!shell) {
|
|
return nullptr;
|
|
}
|
|
|
|
return shell->GetPresContext();
|
|
}
|
|
|
|
} // namespace mozilla
|