зеркало из https://github.com/mozilla/gecko-dev.git
1848 строки
59 KiB
C++
1848 строки
59 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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 file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/dom/KeyframeEffect.h"
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#include "FrameLayerBuilder.h"
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#include "mozilla/dom/Animation.h"
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#include "mozilla/dom/KeyframeAnimationOptionsBinding.h"
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// For UnrestrictedDoubleOrKeyframeAnimationOptions;
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#include "mozilla/dom/CSSPseudoElement.h"
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#include "mozilla/dom/KeyframeEffectBinding.h"
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#include "mozilla/AnimationUtils.h"
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#include "mozilla/AutoRestore.h"
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#include "mozilla/ComputedStyleInlines.h"
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#include "mozilla/EffectSet.h"
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#include "mozilla/FloatingPoint.h" // For IsFinite
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#include "mozilla/LayerAnimationInfo.h"
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#include "mozilla/LookAndFeel.h" // For LookAndFeel::GetInt
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#include "mozilla/KeyframeUtils.h"
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#include "mozilla/ServoBindings.h"
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#include "mozilla/TypeTraits.h"
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#include "Layers.h" // For Layer
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#include "nsComputedDOMStyle.h" // nsComputedDOMStyle::GetComputedStyle
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#include "nsContentUtils.h"
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#include "nsCSSPropertyIDSet.h"
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#include "nsCSSProps.h" // For nsCSSProps::PropHasFlags
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#include "nsCSSPseudoElements.h" // For CSSPseudoElementType
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#include "nsDocument.h" // For nsDocument::IsWebAnimationsEnabled
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#include "nsIFrame.h"
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#include "nsIPresShell.h"
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#include "nsIScriptError.h"
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#include "nsRefreshDriver.h"
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namespace mozilla {
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bool
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PropertyValuePair::operator==(const PropertyValuePair& aOther) const
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{
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if (mProperty != aOther.mProperty) {
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return false;
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}
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if (mServoDeclarationBlock == aOther.mServoDeclarationBlock) {
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return true;
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}
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if (!mServoDeclarationBlock || !aOther.mServoDeclarationBlock) {
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return false;
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}
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return Servo_DeclarationBlock_Equals(mServoDeclarationBlock,
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aOther.mServoDeclarationBlock);
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}
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namespace dom {
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NS_IMPL_CYCLE_COLLECTION_INHERITED(KeyframeEffect,
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AnimationEffect,
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mTarget)
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NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(KeyframeEffect,
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AnimationEffect)
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NS_IMPL_CYCLE_COLLECTION_TRACE_END
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(KeyframeEffect)
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NS_INTERFACE_MAP_END_INHERITING(AnimationEffect)
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NS_IMPL_ADDREF_INHERITED(KeyframeEffect, AnimationEffect)
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NS_IMPL_RELEASE_INHERITED(KeyframeEffect, AnimationEffect)
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KeyframeEffect::KeyframeEffect(
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nsIDocument* aDocument,
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const Maybe<OwningAnimationTarget>& aTarget,
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const TimingParams& aTiming,
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const KeyframeEffectParams& aOptions)
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: AnimationEffect(aDocument, aTiming)
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, mTarget(aTarget)
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, mEffectOptions(aOptions)
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, mInEffectOnLastAnimationTimingUpdate(false)
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, mCumulativeChangeHint(nsChangeHint(0))
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{
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}
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JSObject*
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KeyframeEffect::WrapObject(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto)
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{
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return KeyframeEffect_Binding::Wrap(aCx, this, aGivenProto);
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}
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IterationCompositeOperation KeyframeEffect::IterationComposite(
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CallerType /*aCallerType*/) const
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{
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return mEffectOptions.mIterationComposite;
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}
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void
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KeyframeEffect::SetIterationComposite(
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const IterationCompositeOperation& aIterationComposite,
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CallerType aCallerType)
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{
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// Ignore iterationComposite if the Web Animations API is not enabled,
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// then the default value 'Replace' will be used.
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if (!nsDocument::IsWebAnimationsEnabled(aCallerType)) {
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return;
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}
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if (mEffectOptions.mIterationComposite == aIterationComposite) {
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return;
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}
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if (mAnimation && mAnimation->IsRelevant()) {
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nsNodeUtils::AnimationChanged(mAnimation);
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}
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mEffectOptions.mIterationComposite = aIterationComposite;
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RequestRestyle(EffectCompositor::RestyleType::Layer);
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}
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CompositeOperation
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KeyframeEffect::Composite() const
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{
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return mEffectOptions.mComposite;
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}
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void
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KeyframeEffect::SetComposite(const CompositeOperation& aComposite)
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{
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if (mEffectOptions.mComposite == aComposite) {
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return;
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}
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mEffectOptions.mComposite = aComposite;
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if (mAnimation && mAnimation->IsRelevant()) {
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nsNodeUtils::AnimationChanged(mAnimation);
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}
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if (mTarget) {
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RefPtr<ComputedStyle> computedStyle = GetTargetComputedStyle();
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if (computedStyle) {
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UpdateProperties(computedStyle);
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}
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}
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}
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void
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KeyframeEffect::NotifySpecifiedTimingUpdated()
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{
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// Use the same document for a pseudo element and its parent element.
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// Use nullptr if we don't have mTarget, so disable the mutation batch.
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nsAutoAnimationMutationBatch mb(mTarget ? mTarget->mElement->OwnerDoc()
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: nullptr);
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if (mAnimation) {
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mAnimation->NotifyEffectTimingUpdated();
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if (mAnimation->IsRelevant()) {
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nsNodeUtils::AnimationChanged(mAnimation);
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}
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RequestRestyle(EffectCompositor::RestyleType::Layer);
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}
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}
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void
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KeyframeEffect::NotifyAnimationTimingUpdated()
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{
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UpdateTargetRegistration();
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// If the effect is not relevant it will be removed from the target
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// element's effect set. However, effects not in the effect set
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// will not be included in the set of candidate effects for running on
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// the compositor and hence they won't have their compositor status
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// updated. As a result, we need to make sure we clear their compositor
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// status here.
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bool isRelevant = mAnimation && mAnimation->IsRelevant();
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if (!isRelevant) {
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ResetIsRunningOnCompositor();
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}
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// Request restyle if necessary.
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if (mAnimation && !mProperties.IsEmpty() && HasComputedTimingChanged()) {
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EffectCompositor::RestyleType restyleType =
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CanThrottle() ?
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EffectCompositor::RestyleType::Throttled :
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EffectCompositor::RestyleType::Standard;
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RequestRestyle(restyleType);
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}
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// Detect changes to "in effect" status since we need to recalculate the
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// animation cascade for this element whenever that changes.
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// Note that updating mInEffectOnLastAnimationTimingUpdate has to be done
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// after above CanThrottle() call since the function uses the flag inside it.
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bool inEffect = IsInEffect();
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if (inEffect != mInEffectOnLastAnimationTimingUpdate) {
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MarkCascadeNeedsUpdate();
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mInEffectOnLastAnimationTimingUpdate = inEffect;
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}
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// If we're no longer "in effect", our ComposeStyle method will never be
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// called and we will never have a chance to update mProgressOnLastCompose
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// and mCurrentIterationOnLastCompose.
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// We clear them here to ensure that if we later become "in effect" we will
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// request a restyle (above).
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if (!inEffect) {
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mProgressOnLastCompose.SetNull();
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mCurrentIterationOnLastCompose = 0;
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}
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}
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static bool
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KeyframesEqualIgnoringComputedOffsets(const nsTArray<Keyframe>& aLhs,
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const nsTArray<Keyframe>& aRhs)
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{
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if (aLhs.Length() != aRhs.Length()) {
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return false;
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}
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for (size_t i = 0, len = aLhs.Length(); i < len; ++i) {
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const Keyframe& a = aLhs[i];
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const Keyframe& b = aRhs[i];
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if (a.mOffset != b.mOffset ||
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a.mTimingFunction != b.mTimingFunction ||
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a.mPropertyValues != b.mPropertyValues) {
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return false;
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}
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}
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return true;
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}
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// https://drafts.csswg.org/web-animations/#dom-keyframeeffect-setkeyframes
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void
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KeyframeEffect::SetKeyframes(JSContext* aContext,
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JS::Handle<JSObject*> aKeyframes,
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ErrorResult& aRv)
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{
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nsTArray<Keyframe> keyframes =
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KeyframeUtils::GetKeyframesFromObject(aContext, mDocument, aKeyframes, aRv);
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if (aRv.Failed()) {
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return;
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}
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RefPtr<ComputedStyle> style = GetTargetComputedStyle();
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SetKeyframes(std::move(keyframes), style);
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}
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void
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KeyframeEffect::SetKeyframes(
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nsTArray<Keyframe>&& aKeyframes,
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const ComputedStyle* aStyle)
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{
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if (KeyframesEqualIgnoringComputedOffsets(aKeyframes, mKeyframes)) {
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return;
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}
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mKeyframes = std::move(aKeyframes);
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KeyframeUtils::DistributeKeyframes(mKeyframes);
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if (mAnimation && mAnimation->IsRelevant()) {
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nsNodeUtils::AnimationChanged(mAnimation);
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}
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// We need to call UpdateProperties() unless the target element doesn't have
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// style (e.g. the target element is not associated with any document).
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if (aStyle) {
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UpdateProperties(aStyle);
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MaybeUpdateFrameForCompositor();
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}
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}
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const AnimationProperty*
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KeyframeEffect::GetEffectiveAnimationOfProperty(nsCSSPropertyID aProperty) const
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{
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EffectSet* effectSet =
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EffectSet::GetEffectSet(mTarget->mElement, mTarget->mPseudoType);
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for (size_t propIdx = 0, propEnd = mProperties.Length();
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propIdx != propEnd; ++propIdx) {
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if (aProperty == mProperties[propIdx].mProperty) {
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const AnimationProperty* result = &mProperties[propIdx];
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// Skip if there is a property of animation level that is overridden
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// by !important rules.
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if (effectSet &&
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effectSet->PropertiesWithImportantRules()
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.HasProperty(result->mProperty) &&
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effectSet->PropertiesForAnimationsLevel()
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.HasProperty(result->mProperty)) {
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result = nullptr;
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}
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return result;
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}
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}
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return nullptr;
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}
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bool
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KeyframeEffect::HasAnimationOfProperty(nsCSSPropertyID aProperty) const
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{
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for (const AnimationProperty& property : mProperties) {
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if (property.mProperty == aProperty) {
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return true;
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}
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}
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return false;
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}
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#ifdef DEBUG
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bool
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SpecifiedKeyframeArraysAreEqual(const nsTArray<Keyframe>& aA,
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const nsTArray<Keyframe>& aB)
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{
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if (aA.Length() != aB.Length()) {
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return false;
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}
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for (size_t i = 0; i < aA.Length(); i++) {
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const Keyframe& a = aA[i];
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const Keyframe& b = aB[i];
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if (a.mOffset != b.mOffset ||
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a.mTimingFunction != b.mTimingFunction ||
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a.mPropertyValues != b.mPropertyValues) {
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return false;
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}
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}
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return true;
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}
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#endif
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void
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KeyframeEffect::UpdateProperties(const ComputedStyle* aStyle)
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{
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MOZ_ASSERT(aStyle);
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nsTArray<AnimationProperty> properties = BuildProperties(aStyle);
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// We need to update base styles even if any properties are not changed at all
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// since base styles might have been changed due to parent style changes, etc.
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EnsureBaseStyles(aStyle, properties);
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if (mProperties == properties) {
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return;
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}
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// Preserve the state of the mIsRunningOnCompositor flag.
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nsCSSPropertyIDSet runningOnCompositorProperties;
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for (const AnimationProperty& property : mProperties) {
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if (property.mIsRunningOnCompositor) {
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runningOnCompositorProperties.AddProperty(property.mProperty);
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}
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}
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mProperties = std::move(properties);
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UpdateEffectSet();
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for (AnimationProperty& property : mProperties) {
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property.mIsRunningOnCompositor =
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runningOnCompositorProperties.HasProperty(property.mProperty);
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}
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CalculateCumulativeChangeHint(aStyle);
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MarkCascadeNeedsUpdate();
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RequestRestyle(EffectCompositor::RestyleType::Layer);
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}
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void
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KeyframeEffect::EnsureBaseStyles(
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const ComputedStyle* aComputedValues,
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const nsTArray<AnimationProperty>& aProperties)
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{
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if (!mTarget) {
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return;
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}
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mBaseStyleValuesForServo.Clear();
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nsPresContext* presContext =
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nsContentUtils::GetContextForContent(mTarget->mElement);
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// If |aProperties| is empty we're not going to dereference |presContext| so
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// we don't care if it is nullptr.
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//
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// We could just return early when |aProperties| is empty and save looking up
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// the pres context, but that won't save any effort normally since we don't
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// call this function if we have no keyframes to begin with. Furthermore, the
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// case where |presContext| is nullptr is so rare (we've only ever seen in
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// fuzzing, and even then we've never been able to reproduce it reliably)
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// it's not worth the runtime cost of an extra branch.
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MOZ_ASSERT(presContext || aProperties.IsEmpty(),
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"Typically presContext should not be nullptr but if it is"
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" we should have also failed to calculate the computed values"
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" passed-in as aProperties");
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RefPtr<ComputedStyle> baseComputedStyle;
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for (const AnimationProperty& property : aProperties) {
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EnsureBaseStyle(property,
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presContext,
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aComputedValues,
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baseComputedStyle);
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}
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}
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void
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KeyframeEffect::EnsureBaseStyle(
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const AnimationProperty& aProperty,
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nsPresContext* aPresContext,
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const ComputedStyle* aComputedStyle,
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RefPtr<ComputedStyle>& aBaseComputedStyle)
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{
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bool hasAdditiveValues = false;
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for (const AnimationPropertySegment& segment : aProperty.mSegments) {
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if (!segment.HasReplaceableValues()) {
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hasAdditiveValues = true;
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break;
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}
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}
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if (!hasAdditiveValues) {
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return;
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}
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if (!aBaseComputedStyle) {
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Element* animatingElement =
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EffectCompositor::GetElementToRestyle(mTarget->mElement,
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mTarget->mPseudoType);
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aBaseComputedStyle = aPresContext->StyleSet()->
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GetBaseContextForElement(animatingElement, aComputedStyle);
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}
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RefPtr<RawServoAnimationValue> baseValue =
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Servo_ComputedValues_ExtractAnimationValue(aBaseComputedStyle,
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aProperty.mProperty).Consume();
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mBaseStyleValuesForServo.Put(aProperty.mProperty, baseValue);
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}
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void
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KeyframeEffect::WillComposeStyle()
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{
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ComputedTiming computedTiming = GetComputedTiming();
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mProgressOnLastCompose = computedTiming.mProgress;
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mCurrentIterationOnLastCompose = computedTiming.mCurrentIteration;
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}
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void
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KeyframeEffect::ComposeStyleRule(
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RawServoAnimationValueMap& aAnimationValues,
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const AnimationProperty& aProperty,
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const AnimationPropertySegment& aSegment,
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const ComputedTiming& aComputedTiming)
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{
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Servo_AnimationCompose(&aAnimationValues,
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&mBaseStyleValuesForServo,
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aProperty.mProperty,
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&aSegment,
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&aProperty.mSegments.LastElement(),
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&aComputedTiming,
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mEffectOptions.mIterationComposite);
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}
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void
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KeyframeEffect::ComposeStyle(
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RawServoAnimationValueMap& aComposeResult,
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const nsCSSPropertyIDSet& aPropertiesToSkip)
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{
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ComputedTiming computedTiming = GetComputedTiming();
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// If the progress is null, we don't have fill data for the current
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// time so we shouldn't animate.
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if (computedTiming.mProgress.IsNull()) {
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return;
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}
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for (size_t propIdx = 0, propEnd = mProperties.Length();
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propIdx != propEnd; ++propIdx)
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{
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const AnimationProperty& prop = mProperties[propIdx];
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MOZ_ASSERT(prop.mSegments[0].mFromKey == 0.0, "incorrect first from key");
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MOZ_ASSERT(prop.mSegments[prop.mSegments.Length() - 1].mToKey == 1.0,
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"incorrect last to key");
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if (aPropertiesToSkip.HasProperty(prop.mProperty)) {
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continue;
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}
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MOZ_ASSERT(prop.mSegments.Length() > 0,
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"property should not be in animations if it has no segments");
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// FIXME: Maybe cache the current segment?
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const AnimationPropertySegment *segment = prop.mSegments.Elements(),
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*segmentEnd = segment + prop.mSegments.Length();
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while (segment->mToKey <= computedTiming.mProgress.Value()) {
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MOZ_ASSERT(segment->mFromKey <= segment->mToKey, "incorrect keys");
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if ((segment+1) == segmentEnd) {
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break;
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}
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++segment;
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MOZ_ASSERT(segment->mFromKey == (segment-1)->mToKey, "incorrect keys");
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}
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MOZ_ASSERT(segment->mFromKey <= segment->mToKey, "incorrect keys");
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MOZ_ASSERT(segment >= prop.mSegments.Elements() &&
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size_t(segment - prop.mSegments.Elements()) <
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prop.mSegments.Length(),
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"out of array bounds");
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ComposeStyleRule(aComposeResult, prop, *segment, computedTiming);
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}
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// If the animation produces a change hint that affects the overflow region,
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// we need to record the current time to unthrottle the animation
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// periodically when the animation is being throttled because it's scrolled
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// out of view.
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if (HasPropertiesThatMightAffectOverflow()) {
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nsPresContext* presContext =
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nsContentUtils::GetContextForContent(mTarget->mElement);
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if (presContext) {
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TimeStamp now = presContext->RefreshDriver()->MostRecentRefresh();
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EffectSet* effectSet =
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EffectSet::GetEffectSet(mTarget->mElement, mTarget->mPseudoType);
|
|
MOZ_ASSERT(effectSet, "ComposeStyle should only be called on an effect "
|
|
"that is part of an effect set");
|
|
effectSet->UpdateLastOverflowAnimationSyncTime(now);
|
|
}
|
|
}
|
|
}
|
|
|
|
bool
|
|
KeyframeEffect::IsRunningOnCompositor() const
|
|
{
|
|
// We consider animation is running on compositor if there is at least
|
|
// one property running on compositor.
|
|
// Animation.IsRunningOnCompotitor will return more fine grained
|
|
// information in bug 1196114.
|
|
for (const AnimationProperty& property : mProperties) {
|
|
if (property.mIsRunningOnCompositor) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void
|
|
KeyframeEffect::SetIsRunningOnCompositor(nsCSSPropertyID aProperty,
|
|
bool aIsRunning)
|
|
{
|
|
MOZ_ASSERT(nsCSSProps::PropHasFlags(aProperty,
|
|
CSSPropFlags::CanAnimateOnCompositor),
|
|
"Property being animated on compositor is a recognized "
|
|
"compositor-animatable property");
|
|
for (AnimationProperty& property : mProperties) {
|
|
if (property.mProperty == aProperty) {
|
|
property.mIsRunningOnCompositor = aIsRunning;
|
|
// We currently only set a performance warning message when animations
|
|
// cannot be run on the compositor, so if this animation is running
|
|
// on the compositor we don't need a message.
|
|
if (aIsRunning) {
|
|
property.mPerformanceWarning.reset();
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
KeyframeEffect::ResetIsRunningOnCompositor()
|
|
{
|
|
for (AnimationProperty& property : mProperties) {
|
|
property.mIsRunningOnCompositor = false;
|
|
}
|
|
}
|
|
|
|
static const KeyframeEffectOptions&
|
|
KeyframeEffectOptionsFromUnion(
|
|
const UnrestrictedDoubleOrKeyframeEffectOptions& aOptions)
|
|
{
|
|
MOZ_ASSERT(aOptions.IsKeyframeEffectOptions());
|
|
return aOptions.GetAsKeyframeEffectOptions();
|
|
}
|
|
|
|
static const KeyframeEffectOptions&
|
|
KeyframeEffectOptionsFromUnion(
|
|
const UnrestrictedDoubleOrKeyframeAnimationOptions& aOptions)
|
|
{
|
|
MOZ_ASSERT(aOptions.IsKeyframeAnimationOptions());
|
|
return aOptions.GetAsKeyframeAnimationOptions();
|
|
}
|
|
|
|
template <class OptionsType>
|
|
static KeyframeEffectParams
|
|
KeyframeEffectParamsFromUnion(const OptionsType& aOptions,
|
|
CallerType aCallerType)
|
|
{
|
|
KeyframeEffectParams result;
|
|
if (aOptions.IsUnrestrictedDouble() ||
|
|
// Ignore iterationComposite if the Web Animations API is not enabled,
|
|
// then the default value 'Replace' will be used.
|
|
!nsDocument::IsWebAnimationsEnabled(aCallerType)) {
|
|
return result;
|
|
}
|
|
|
|
const KeyframeEffectOptions& options =
|
|
KeyframeEffectOptionsFromUnion(aOptions);
|
|
result.mIterationComposite = options.mIterationComposite;
|
|
result.mComposite = options.mComposite;
|
|
return result;
|
|
}
|
|
|
|
/* static */ Maybe<OwningAnimationTarget>
|
|
KeyframeEffect::ConvertTarget(
|
|
const Nullable<ElementOrCSSPseudoElement>& aTarget)
|
|
{
|
|
// Return value optimization.
|
|
Maybe<OwningAnimationTarget> result;
|
|
|
|
if (aTarget.IsNull()) {
|
|
return result;
|
|
}
|
|
|
|
const ElementOrCSSPseudoElement& target = aTarget.Value();
|
|
MOZ_ASSERT(target.IsElement() || target.IsCSSPseudoElement(),
|
|
"Uninitialized target");
|
|
|
|
if (target.IsElement()) {
|
|
result.emplace(&target.GetAsElement());
|
|
} else {
|
|
RefPtr<Element> elem = target.GetAsCSSPseudoElement().ParentElement();
|
|
result.emplace(elem, target.GetAsCSSPseudoElement().GetType());
|
|
}
|
|
return result;
|
|
}
|
|
|
|
template <class KeyframeEffectType, class OptionsType>
|
|
/* static */ already_AddRefed<KeyframeEffectType>
|
|
KeyframeEffect::ConstructKeyframeEffect(
|
|
const GlobalObject& aGlobal,
|
|
const Nullable<ElementOrCSSPseudoElement>& aTarget,
|
|
JS::Handle<JSObject*> aKeyframes,
|
|
const OptionsType& aOptions,
|
|
ErrorResult& aRv)
|
|
{
|
|
// We should get the document from `aGlobal` instead of the current Realm
|
|
// to make this works in Xray case.
|
|
//
|
|
// In all non-Xray cases, `aGlobal` matches the current Realm, so this
|
|
// matches the spec behavior.
|
|
//
|
|
// In Xray case, the new objects should be created using the document of
|
|
// the target global, but the KeyframeEffect constructors are called in the
|
|
// caller's compartment to access `aKeyframes` object.
|
|
nsIDocument* doc = AnimationUtils::GetDocumentFromGlobal(aGlobal.Get());
|
|
if (!doc) {
|
|
aRv.Throw(NS_ERROR_FAILURE);
|
|
return nullptr;
|
|
}
|
|
|
|
TimingParams timingParams =
|
|
TimingParams::FromOptionsUnion(aOptions, doc, aRv);
|
|
if (aRv.Failed()) {
|
|
return nullptr;
|
|
}
|
|
|
|
KeyframeEffectParams effectOptions =
|
|
KeyframeEffectParamsFromUnion(aOptions, aGlobal.CallerType());
|
|
|
|
Maybe<OwningAnimationTarget> target = ConvertTarget(aTarget);
|
|
RefPtr<KeyframeEffectType> effect =
|
|
new KeyframeEffectType(doc, target, timingParams, effectOptions);
|
|
|
|
effect->SetKeyframes(aGlobal.Context(), aKeyframes, aRv);
|
|
if (aRv.Failed()) {
|
|
return nullptr;
|
|
}
|
|
|
|
return effect.forget();
|
|
}
|
|
|
|
template<class KeyframeEffectType>
|
|
/* static */ already_AddRefed<KeyframeEffectType>
|
|
KeyframeEffect::ConstructKeyframeEffect(const GlobalObject& aGlobal,
|
|
KeyframeEffect& aSource,
|
|
ErrorResult& aRv)
|
|
{
|
|
nsIDocument* doc = AnimationUtils::GetCurrentRealmDocument(aGlobal.Context());
|
|
if (!doc) {
|
|
aRv.Throw(NS_ERROR_FAILURE);
|
|
return nullptr;
|
|
}
|
|
|
|
// Create a new KeyframeEffect object with aSource's target,
|
|
// iteration composite operation, composite operation, and spacing mode.
|
|
// The constructor creates a new AnimationEffect object by
|
|
// aSource's TimingParams.
|
|
// Note: we don't need to re-throw exceptions since the value specified on
|
|
// aSource's timing object can be assumed valid.
|
|
RefPtr<KeyframeEffectType> effect =
|
|
new KeyframeEffectType(doc,
|
|
aSource.mTarget,
|
|
aSource.SpecifiedTiming(),
|
|
aSource.mEffectOptions);
|
|
// Copy cumulative change hint. mCumulativeChangeHint should be the same as
|
|
// the source one because both of targets are the same.
|
|
effect->mCumulativeChangeHint = aSource.mCumulativeChangeHint;
|
|
|
|
// Copy aSource's keyframes and animation properties.
|
|
// Note: We don't call SetKeyframes directly, which might revise the
|
|
// computed offsets and rebuild the animation properties.
|
|
effect->mKeyframes = aSource.mKeyframes;
|
|
effect->mProperties = aSource.mProperties;
|
|
return effect.forget();
|
|
}
|
|
|
|
nsTArray<AnimationProperty>
|
|
KeyframeEffect::BuildProperties(const ComputedStyle* aStyle)
|
|
{
|
|
|
|
MOZ_ASSERT(aStyle);
|
|
|
|
nsTArray<AnimationProperty> result;
|
|
// If mTarget is null, return an empty property array.
|
|
if (!mTarget) {
|
|
return result;
|
|
}
|
|
|
|
// When GetComputedKeyframeValues or GetAnimationPropertiesFromKeyframes
|
|
// calculate computed values from |mKeyframes|, they could possibly
|
|
// trigger a subsequent restyle in which we rebuild animations. If that
|
|
// happens we could find that |mKeyframes| is overwritten while it is
|
|
// being iterated over. Normally that shouldn't happen but just in case we
|
|
// make a copy of |mKeyframes| first and iterate over that instead.
|
|
auto keyframesCopy(mKeyframes);
|
|
|
|
result =
|
|
KeyframeUtils::GetAnimationPropertiesFromKeyframes(
|
|
keyframesCopy,
|
|
mTarget->mElement,
|
|
aStyle,
|
|
mEffectOptions.mComposite);
|
|
|
|
#ifdef DEBUG
|
|
MOZ_ASSERT(SpecifiedKeyframeArraysAreEqual(mKeyframes, keyframesCopy),
|
|
"Apart from the computed offset members, the keyframes array"
|
|
" should not be modified");
|
|
#endif
|
|
|
|
mKeyframes.SwapElements(keyframesCopy);
|
|
return result;
|
|
}
|
|
|
|
template<typename FrameEnumFunc>
|
|
static void
|
|
EnumerateContinuationsOrIBSplitSiblings(nsIFrame* aFrame,
|
|
FrameEnumFunc&& aFunc)
|
|
{
|
|
while (aFrame) {
|
|
aFunc(aFrame);
|
|
aFrame = nsLayoutUtils::GetNextContinuationOrIBSplitSibling(aFrame);
|
|
}
|
|
}
|
|
|
|
void
|
|
KeyframeEffect::UpdateTargetRegistration()
|
|
{
|
|
if (!mTarget) {
|
|
return;
|
|
}
|
|
|
|
bool isRelevant = mAnimation && mAnimation->IsRelevant();
|
|
|
|
// Animation::IsRelevant() returns a cached value. It only updates when
|
|
// something calls Animation::UpdateRelevance. Whenever our timing changes,
|
|
// we should be notifying our Animation before calling this, so
|
|
// Animation::IsRelevant() should be up-to-date by the time we get here.
|
|
MOZ_ASSERT(isRelevant == IsCurrent() || IsInEffect(),
|
|
"Out of date Animation::IsRelevant value");
|
|
|
|
if (isRelevant && !mInEffectSet) {
|
|
EffectSet* effectSet =
|
|
EffectSet::GetOrCreateEffectSet(mTarget->mElement, mTarget->mPseudoType);
|
|
effectSet->AddEffect(*this);
|
|
mInEffectSet = true;
|
|
UpdateEffectSet(effectSet);
|
|
nsIFrame* frame = GetPrimaryFrame();
|
|
EnumerateContinuationsOrIBSplitSiblings(frame,
|
|
[](nsIFrame* aFrame) {
|
|
aFrame->MarkNeedsDisplayItemRebuild();
|
|
}
|
|
);
|
|
} else if (!isRelevant && mInEffectSet) {
|
|
UnregisterTarget();
|
|
}
|
|
}
|
|
|
|
void
|
|
KeyframeEffect::UnregisterTarget()
|
|
{
|
|
if (!mInEffectSet) {
|
|
return;
|
|
}
|
|
|
|
EffectSet* effectSet =
|
|
EffectSet::GetEffectSet(mTarget->mElement, mTarget->mPseudoType);
|
|
MOZ_ASSERT(effectSet, "If mInEffectSet is true, there must be an EffectSet"
|
|
" on the target element");
|
|
mInEffectSet = false;
|
|
if (effectSet) {
|
|
effectSet->RemoveEffect(*this);
|
|
|
|
if (effectSet->IsEmpty()) {
|
|
EffectSet::DestroyEffectSet(mTarget->mElement, mTarget->mPseudoType);
|
|
}
|
|
}
|
|
nsIFrame* frame = GetPrimaryFrame();
|
|
EnumerateContinuationsOrIBSplitSiblings(frame,
|
|
[](nsIFrame* aFrame) {
|
|
aFrame->MarkNeedsDisplayItemRebuild();
|
|
}
|
|
);
|
|
}
|
|
|
|
void
|
|
KeyframeEffect::RequestRestyle(EffectCompositor::RestyleType aRestyleType)
|
|
{
|
|
if (!mTarget) {
|
|
return;
|
|
}
|
|
nsPresContext* presContext = nsContentUtils::GetContextForContent(mTarget->mElement);
|
|
if (presContext && mAnimation) {
|
|
presContext->EffectCompositor()->
|
|
RequestRestyle(mTarget->mElement, mTarget->mPseudoType,
|
|
aRestyleType, mAnimation->CascadeLevel());
|
|
}
|
|
}
|
|
|
|
already_AddRefed<ComputedStyle>
|
|
KeyframeEffect::GetTargetComputedStyle()
|
|
{
|
|
if (!GetRenderedDocument()) {
|
|
return nullptr;
|
|
}
|
|
|
|
MOZ_ASSERT(mTarget,
|
|
"Should only have a document when we have a target element");
|
|
|
|
nsAtom* pseudo = mTarget->mPseudoType < CSSPseudoElementType::Count
|
|
? nsCSSPseudoElements::GetPseudoAtom(mTarget->mPseudoType)
|
|
: nullptr;
|
|
|
|
OwningAnimationTarget kungfuDeathGrip(mTarget->mElement,
|
|
mTarget->mPseudoType);
|
|
|
|
return nsComputedDOMStyle::GetComputedStyle(mTarget->mElement, pseudo);
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
void
|
|
DumpAnimationProperties(nsTArray<AnimationProperty>& aAnimationProperties)
|
|
{
|
|
for (auto& p : aAnimationProperties) {
|
|
printf("%s\n", nsCSSProps::GetStringValue(p.mProperty).get());
|
|
for (auto& s : p.mSegments) {
|
|
nsString fromValue, toValue;
|
|
s.mFromValue.SerializeSpecifiedValue(p.mProperty, fromValue);
|
|
s.mToValue.SerializeSpecifiedValue(p.mProperty, toValue);
|
|
printf(" %f..%f: %s..%s\n", s.mFromKey, s.mToKey,
|
|
NS_ConvertUTF16toUTF8(fromValue).get(),
|
|
NS_ConvertUTF16toUTF8(toValue).get());
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/* static */ already_AddRefed<KeyframeEffect>
|
|
KeyframeEffect::Constructor(
|
|
const GlobalObject& aGlobal,
|
|
const Nullable<ElementOrCSSPseudoElement>& aTarget,
|
|
JS::Handle<JSObject*> aKeyframes,
|
|
const UnrestrictedDoubleOrKeyframeEffectOptions& aOptions,
|
|
ErrorResult& aRv)
|
|
{
|
|
return ConstructKeyframeEffect<KeyframeEffect>(aGlobal, aTarget,
|
|
aKeyframes, aOptions, aRv);
|
|
}
|
|
|
|
/* static */ already_AddRefed<KeyframeEffect>
|
|
KeyframeEffect::Constructor(const GlobalObject& aGlobal,
|
|
KeyframeEffect& aSource,
|
|
ErrorResult& aRv)
|
|
{
|
|
return ConstructKeyframeEffect<KeyframeEffect>(aGlobal, aSource, aRv);
|
|
}
|
|
|
|
/* static */ already_AddRefed<KeyframeEffect>
|
|
KeyframeEffect::Constructor(
|
|
const GlobalObject& aGlobal,
|
|
const Nullable<ElementOrCSSPseudoElement>& aTarget,
|
|
JS::Handle<JSObject*> aKeyframes,
|
|
const UnrestrictedDoubleOrKeyframeAnimationOptions& aOptions,
|
|
ErrorResult& aRv)
|
|
{
|
|
return ConstructKeyframeEffect<KeyframeEffect>(aGlobal, aTarget, aKeyframes,
|
|
aOptions, aRv);
|
|
}
|
|
|
|
void
|
|
KeyframeEffect::GetTarget(Nullable<OwningElementOrCSSPseudoElement>& aRv) const
|
|
{
|
|
if (!mTarget) {
|
|
aRv.SetNull();
|
|
return;
|
|
}
|
|
|
|
switch (mTarget->mPseudoType) {
|
|
case CSSPseudoElementType::before:
|
|
case CSSPseudoElementType::after:
|
|
aRv.SetValue().SetAsCSSPseudoElement() =
|
|
CSSPseudoElement::GetCSSPseudoElement(mTarget->mElement,
|
|
mTarget->mPseudoType);
|
|
break;
|
|
|
|
case CSSPseudoElementType::NotPseudo:
|
|
aRv.SetValue().SetAsElement() = mTarget->mElement;
|
|
break;
|
|
|
|
default:
|
|
MOZ_ASSERT_UNREACHABLE("Animation of unsupported pseudo-type");
|
|
aRv.SetNull();
|
|
}
|
|
}
|
|
|
|
void
|
|
KeyframeEffect::SetTarget(const Nullable<ElementOrCSSPseudoElement>& aTarget)
|
|
{
|
|
Maybe<OwningAnimationTarget> newTarget = ConvertTarget(aTarget);
|
|
if (mTarget == newTarget) {
|
|
// Assign the same target, skip it.
|
|
return;
|
|
}
|
|
|
|
if (mTarget) {
|
|
UnregisterTarget();
|
|
ResetIsRunningOnCompositor();
|
|
|
|
RequestRestyle(EffectCompositor::RestyleType::Layer);
|
|
|
|
nsAutoAnimationMutationBatch mb(mTarget->mElement->OwnerDoc());
|
|
if (mAnimation) {
|
|
nsNodeUtils::AnimationRemoved(mAnimation);
|
|
}
|
|
}
|
|
|
|
mTarget = newTarget;
|
|
|
|
if (mTarget) {
|
|
UpdateTargetRegistration();
|
|
RefPtr<ComputedStyle> computedStyle = GetTargetComputedStyle();
|
|
if (computedStyle) {
|
|
UpdateProperties(computedStyle);
|
|
}
|
|
|
|
MaybeUpdateFrameForCompositor();
|
|
|
|
RequestRestyle(EffectCompositor::RestyleType::Layer);
|
|
|
|
nsAutoAnimationMutationBatch mb(mTarget->mElement->OwnerDoc());
|
|
if (mAnimation) {
|
|
nsNodeUtils::AnimationAdded(mAnimation);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
CreatePropertyValue(nsCSSPropertyID aProperty,
|
|
float aOffset,
|
|
const Maybe<ComputedTimingFunction>& aTimingFunction,
|
|
const AnimationValue& aValue,
|
|
dom::CompositeOperation aComposite,
|
|
AnimationPropertyValueDetails& aResult)
|
|
{
|
|
aResult.mOffset = aOffset;
|
|
|
|
if (!aValue.IsNull()) {
|
|
nsString stringValue;
|
|
aValue.SerializeSpecifiedValue(aProperty, stringValue);
|
|
aResult.mValue.Construct(stringValue);
|
|
}
|
|
|
|
if (aTimingFunction) {
|
|
aResult.mEasing.Construct();
|
|
aTimingFunction->AppendToString(aResult.mEasing.Value());
|
|
} else {
|
|
aResult.mEasing.Construct(NS_LITERAL_STRING("linear"));
|
|
}
|
|
|
|
aResult.mComposite = aComposite;
|
|
}
|
|
|
|
void
|
|
KeyframeEffect::GetProperties(
|
|
nsTArray<AnimationPropertyDetails>& aProperties,
|
|
ErrorResult& aRv) const
|
|
{
|
|
for (const AnimationProperty& property : mProperties) {
|
|
AnimationPropertyDetails propertyDetails;
|
|
propertyDetails.mProperty =
|
|
NS_ConvertASCIItoUTF16(nsCSSProps::GetStringValue(property.mProperty));
|
|
propertyDetails.mRunningOnCompositor = property.mIsRunningOnCompositor;
|
|
|
|
nsAutoString localizedString;
|
|
if (property.mPerformanceWarning &&
|
|
property.mPerformanceWarning->ToLocalizedString(localizedString)) {
|
|
propertyDetails.mWarning.Construct(localizedString);
|
|
}
|
|
|
|
if (!propertyDetails.mValues.SetCapacity(property.mSegments.Length(),
|
|
mozilla::fallible)) {
|
|
aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
|
|
return;
|
|
}
|
|
|
|
for (size_t segmentIdx = 0, segmentLen = property.mSegments.Length();
|
|
segmentIdx < segmentLen;
|
|
segmentIdx++)
|
|
{
|
|
const AnimationPropertySegment& segment = property.mSegments[segmentIdx];
|
|
|
|
binding_detail::FastAnimationPropertyValueDetails fromValue;
|
|
CreatePropertyValue(property.mProperty, segment.mFromKey,
|
|
segment.mTimingFunction, segment.mFromValue,
|
|
segment.mFromComposite, fromValue);
|
|
// We don't apply timing functions for zero-length segments, so
|
|
// don't return one here.
|
|
if (segment.mFromKey == segment.mToKey) {
|
|
fromValue.mEasing.Reset();
|
|
}
|
|
// The following won't fail since we have already allocated the capacity
|
|
// above.
|
|
propertyDetails.mValues.AppendElement(fromValue, mozilla::fallible);
|
|
|
|
// Normally we can ignore the to-value for this segment since it is
|
|
// identical to the from-value from the next segment. However, we need
|
|
// to add it if either:
|
|
// a) this is the last segment, or
|
|
// b) the next segment's from-value differs.
|
|
if (segmentIdx == segmentLen - 1 ||
|
|
property.mSegments[segmentIdx + 1].mFromValue != segment.mToValue) {
|
|
binding_detail::FastAnimationPropertyValueDetails toValue;
|
|
CreatePropertyValue(property.mProperty, segment.mToKey,
|
|
Nothing(), segment.mToValue,
|
|
segment.mToComposite, toValue);
|
|
// It doesn't really make sense to have a timing function on the
|
|
// last property value or before a sudden jump so we just drop the
|
|
// easing property altogether.
|
|
toValue.mEasing.Reset();
|
|
propertyDetails.mValues.AppendElement(toValue, mozilla::fallible);
|
|
}
|
|
}
|
|
|
|
aProperties.AppendElement(propertyDetails);
|
|
}
|
|
}
|
|
|
|
void
|
|
KeyframeEffect::GetKeyframes(JSContext*& aCx,
|
|
nsTArray<JSObject*>& aResult,
|
|
ErrorResult& aRv)
|
|
{
|
|
MOZ_ASSERT(aResult.IsEmpty());
|
|
MOZ_ASSERT(!aRv.Failed());
|
|
|
|
if (!aResult.SetCapacity(mKeyframes.Length(), mozilla::fallible)) {
|
|
aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
|
|
return;
|
|
}
|
|
|
|
bool isCSSAnimation = mAnimation && mAnimation->AsCSSAnimation();
|
|
|
|
// For Servo, when we have CSS Animation @keyframes with variables, we convert
|
|
// shorthands to longhands if needed, and store a reference to the unparsed
|
|
// value. When it comes time to serialize, however, what do you serialize for
|
|
// a longhand that comes from a variable reference in a shorthand? Servo says,
|
|
// "an empty string" which is not particularly helpful.
|
|
//
|
|
// We should just store shorthands as-is (bug 1391537) and then return the
|
|
// variable references, but for now, since we don't do that, and in order to
|
|
// be consistent with Gecko, we just expand the variables (assuming we have
|
|
// enough context to do so). For that we need to grab the ComputedStyle so we
|
|
// know what custom property values to provide.
|
|
RefPtr<ComputedStyle> computedStyle;
|
|
if (isCSSAnimation) {
|
|
// The following will flush style but that's ok since if you update
|
|
// a variable's computed value, you expect to see that updated value in the
|
|
// result of getKeyframes().
|
|
//
|
|
// If we don't have a target, the following will return null. In that case
|
|
// we might end up returning variables as-is or empty string. That should be
|
|
// acceptable however, since such a case is rare and this is only
|
|
// short-term (and unshipped) behavior until bug 1391537 is fixed.
|
|
computedStyle = GetTargetComputedStyle();
|
|
}
|
|
|
|
for (const Keyframe& keyframe : mKeyframes) {
|
|
// Set up a dictionary object for the explicit members
|
|
BaseComputedKeyframe keyframeDict;
|
|
if (keyframe.mOffset) {
|
|
keyframeDict.mOffset.SetValue(keyframe.mOffset.value());
|
|
}
|
|
MOZ_ASSERT(keyframe.mComputedOffset != Keyframe::kComputedOffsetNotSet,
|
|
"Invalid computed offset");
|
|
keyframeDict.mComputedOffset.Construct(keyframe.mComputedOffset);
|
|
if (keyframe.mTimingFunction) {
|
|
keyframeDict.mEasing.Truncate();
|
|
keyframe.mTimingFunction.ref().AppendToString(keyframeDict.mEasing);
|
|
} // else if null, leave easing as its default "linear".
|
|
|
|
if (keyframe.mComposite) {
|
|
keyframeDict.mComposite.SetValue(keyframe.mComposite.value());
|
|
}
|
|
|
|
JS::Rooted<JS::Value> keyframeJSValue(aCx);
|
|
if (!ToJSValue(aCx, keyframeDict, &keyframeJSValue)) {
|
|
aRv.Throw(NS_ERROR_FAILURE);
|
|
return;
|
|
}
|
|
|
|
RefPtr<RawServoDeclarationBlock> customProperties;
|
|
// A workaround for CSS Animations in servo backend, custom properties in
|
|
// keyframe are stored in a servo's declaration block. Find the declaration
|
|
// block to resolve CSS variables in the keyframe.
|
|
// This workaround will be solved by bug 1391537.
|
|
if (isCSSAnimation) {
|
|
for (const PropertyValuePair& propertyValue : keyframe.mPropertyValues) {
|
|
if (propertyValue.mProperty ==
|
|
nsCSSPropertyID::eCSSPropertyExtra_variable) {
|
|
customProperties = propertyValue.mServoDeclarationBlock;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
JS::Rooted<JSObject*> keyframeObject(aCx, &keyframeJSValue.toObject());
|
|
for (const PropertyValuePair& propertyValue : keyframe.mPropertyValues) {
|
|
nsAutoString stringValue;
|
|
// Don't serialize the custom properties for this keyframe.
|
|
if (propertyValue.mProperty ==
|
|
nsCSSPropertyID::eCSSPropertyExtra_variable) {
|
|
continue;
|
|
}
|
|
if (propertyValue.mServoDeclarationBlock) {
|
|
Servo_DeclarationBlock_SerializeOneValue(
|
|
propertyValue.mServoDeclarationBlock,
|
|
propertyValue.mProperty,
|
|
&stringValue,
|
|
computedStyle,
|
|
customProperties);
|
|
} else {
|
|
RawServoAnimationValue* value =
|
|
mBaseStyleValuesForServo.GetWeak(propertyValue.mProperty);
|
|
|
|
if (value) {
|
|
Servo_AnimationValue_Serialize(value,
|
|
propertyValue.mProperty,
|
|
&stringValue);
|
|
}
|
|
}
|
|
|
|
const char* name = nsCSSProps::PropertyIDLName(propertyValue.mProperty);
|
|
JS::Rooted<JS::Value> value(aCx);
|
|
if (!ToJSValue(aCx, stringValue, &value) ||
|
|
!JS_DefineProperty(aCx, keyframeObject, name, value,
|
|
JSPROP_ENUMERATE)) {
|
|
aRv.Throw(NS_ERROR_FAILURE);
|
|
return;
|
|
}
|
|
}
|
|
|
|
aResult.AppendElement(keyframeObject);
|
|
}
|
|
}
|
|
|
|
/* static */ const TimeDuration
|
|
KeyframeEffect::OverflowRegionRefreshInterval()
|
|
{
|
|
// The amount of time we can wait between updating throttled animations
|
|
// on the main thread that influence the overflow region.
|
|
static const TimeDuration kOverflowRegionRefreshInterval =
|
|
TimeDuration::FromMilliseconds(200);
|
|
|
|
return kOverflowRegionRefreshInterval;
|
|
}
|
|
|
|
bool
|
|
KeyframeEffect::CanThrottleIfNotVisible(nsIFrame& aFrame) const
|
|
{
|
|
// Unless we are newly in-effect, we can throttle the animation if the
|
|
// animation is paint only and the target frame is out of view or the document
|
|
// is in background tabs.
|
|
if (!mInEffectOnLastAnimationTimingUpdate || !CanIgnoreIfNotVisible()) {
|
|
return false;
|
|
}
|
|
|
|
nsIPresShell* presShell = GetPresShell();
|
|
if (presShell && !presShell->IsActive()) {
|
|
return true;
|
|
}
|
|
|
|
const bool isVisibilityHidden =
|
|
!aFrame.IsVisibleOrMayHaveVisibleDescendants();
|
|
if ((!isVisibilityHidden || HasVisibilityChange()) &&
|
|
!aFrame.IsScrolledOutOfView()) {
|
|
return false;
|
|
}
|
|
|
|
// If there are no overflow change hints, we don't need to worry about
|
|
// unthrottling the animation periodically to update scrollbar positions for
|
|
// the overflow region.
|
|
if (!HasPropertiesThatMightAffectOverflow()) {
|
|
return true;
|
|
}
|
|
|
|
// Don't throttle finite animations since the animation might suddenly
|
|
// come into view and if it was throttled it will be out-of-sync.
|
|
if (HasFiniteActiveDuration()) {
|
|
return false;
|
|
}
|
|
|
|
return isVisibilityHidden
|
|
? CanThrottleOverflowChangesInScrollable(aFrame)
|
|
: CanThrottleOverflowChanges(aFrame);
|
|
}
|
|
|
|
bool
|
|
KeyframeEffect::CanThrottle() const
|
|
{
|
|
// Unthrottle if we are not in effect or current. This will be the case when
|
|
// our owning animation has finished, is idle, or when we are in the delay
|
|
// phase (but without a backwards fill). In each case the computed progress
|
|
// value produced on each tick will be the same so we will skip requesting
|
|
// unnecessary restyles in NotifyAnimationTimingUpdated. Any calls we *do* get
|
|
// here will be because of a change in state (e.g. we are newly finished or
|
|
// newly no longer in effect) in which case we shouldn't throttle the sample.
|
|
if (!IsInEffect() || !IsCurrent()) {
|
|
return false;
|
|
}
|
|
|
|
nsIFrame* frame = GetStyleFrame();
|
|
if (!frame) {
|
|
// There are two possible cases here.
|
|
// a) No target element
|
|
// b) The target element has no frame, e.g. because it is in a display:none
|
|
// subtree.
|
|
// In either case we can throttle the animation because there is no
|
|
// need to update on the main thread.
|
|
return true;
|
|
}
|
|
|
|
if (CanThrottleIfNotVisible(*frame)) {
|
|
return true;
|
|
}
|
|
|
|
// First we need to check layer generation and transform overflow
|
|
// prior to the property.mIsRunningOnCompositor check because we should
|
|
// occasionally unthrottle these animations even if the animations are
|
|
// already running on compositor.
|
|
for (const LayerAnimationInfo::Record& record :
|
|
LayerAnimationInfo::sRecords) {
|
|
// Skip properties that are overridden by !important rules.
|
|
// (GetEffectiveAnimationOfProperty, as called by
|
|
// HasEffectiveAnimationOfProperty, only returns a property which is
|
|
// neither overridden by !important rules nor overridden by other
|
|
// animation.)
|
|
if (!HasEffectiveAnimationOfProperty(record.mProperty)) {
|
|
continue;
|
|
}
|
|
|
|
EffectSet* effectSet = EffectSet::GetEffectSet(mTarget->mElement,
|
|
mTarget->mPseudoType);
|
|
MOZ_ASSERT(effectSet, "CanThrottle should be called on an effect "
|
|
"associated with a target element");
|
|
// Note that AnimationInfo::GetGenarationFromFrame() is supposed to work
|
|
// with the primary frame instead of the style frame.
|
|
Maybe<uint64_t> generation = layers::AnimationInfo::GetGenerationFromFrame(
|
|
GetPrimaryFrame(), record.mLayerType);
|
|
// Unthrottle if the animation needs to be brought up to date
|
|
if (!generation || effectSet->GetAnimationGeneration() != *generation) {
|
|
return false;
|
|
}
|
|
|
|
// If this is a transform animation that affects the overflow region,
|
|
// we should unthrottle the animation periodically.
|
|
if (HasPropertiesThatMightAffectOverflow() &&
|
|
!CanThrottleOverflowChangesInScrollable(*frame)) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
for (const AnimationProperty& property : mProperties) {
|
|
if (!property.mIsRunningOnCompositor) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
KeyframeEffect::CanThrottleOverflowChanges(const nsIFrame& aFrame) const
|
|
{
|
|
TimeStamp now = aFrame.PresContext()->RefreshDriver()->MostRecentRefresh();
|
|
|
|
EffectSet* effectSet = EffectSet::GetEffectSet(mTarget->mElement,
|
|
mTarget->mPseudoType);
|
|
MOZ_ASSERT(effectSet, "CanOverflowTransformChanges is expected to be called"
|
|
" on an effect in an effect set");
|
|
MOZ_ASSERT(mAnimation, "CanOverflowTransformChanges is expected to be called"
|
|
" on an effect with a parent animation");
|
|
TimeStamp lastSyncTime = effectSet->LastOverflowAnimationSyncTime();
|
|
// If this animation can cause overflow, we can throttle some of the ticks.
|
|
return (!lastSyncTime.IsNull() &&
|
|
(now - lastSyncTime) < OverflowRegionRefreshInterval());
|
|
}
|
|
|
|
bool
|
|
KeyframeEffect::CanThrottleOverflowChangesInScrollable(nsIFrame& aFrame) const
|
|
{
|
|
// If the target element is not associated with any documents, we don't care
|
|
// it.
|
|
nsIDocument* doc = GetRenderedDocument();
|
|
if (!doc) {
|
|
return true;
|
|
}
|
|
|
|
bool hasIntersectionObservers = doc->HasIntersectionObservers();
|
|
|
|
// If we know that the animation cannot cause overflow,
|
|
// we can just disable flushes for this animation.
|
|
|
|
// If we don't show scrollbars and have no intersection observers, we don't
|
|
// care about overflow.
|
|
if (LookAndFeel::GetInt(LookAndFeel::eIntID_ShowHideScrollbars) == 0 &&
|
|
!hasIntersectionObservers) {
|
|
return true;
|
|
}
|
|
|
|
if (CanThrottleOverflowChanges(aFrame)) {
|
|
return true;
|
|
}
|
|
|
|
// If we have any intersection observers, we unthrottle this transform
|
|
// animation periodically.
|
|
if (hasIntersectionObservers) {
|
|
return false;
|
|
}
|
|
|
|
// If the nearest scrollable ancestor has overflow:hidden,
|
|
// we don't care about overflow.
|
|
nsIScrollableFrame* scrollable =
|
|
nsLayoutUtils::GetNearestScrollableFrame(&aFrame);
|
|
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;
|
|
}
|
|
|
|
nsIFrame*
|
|
KeyframeEffect::GetStyleFrame() const
|
|
{
|
|
nsIFrame* frame = GetPrimaryFrame();
|
|
if (!frame) {
|
|
return nullptr;
|
|
}
|
|
|
|
return nsLayoutUtils::GetStyleFrame(frame);
|
|
}
|
|
|
|
nsIFrame*
|
|
KeyframeEffect::GetPrimaryFrame() const
|
|
{
|
|
nsIFrame* frame = nullptr;
|
|
if (!mTarget) {
|
|
return frame;
|
|
}
|
|
|
|
if (mTarget->mPseudoType == CSSPseudoElementType::before) {
|
|
frame = nsLayoutUtils::GetBeforeFrame(mTarget->mElement);
|
|
} else if (mTarget->mPseudoType == CSSPseudoElementType::after) {
|
|
frame = nsLayoutUtils::GetAfterFrame(mTarget->mElement);
|
|
} else {
|
|
frame = mTarget->mElement->GetPrimaryFrame();
|
|
MOZ_ASSERT(mTarget->mPseudoType == CSSPseudoElementType::NotPseudo,
|
|
"unknown mTarget->mPseudoType");
|
|
}
|
|
|
|
return frame;
|
|
}
|
|
|
|
nsIDocument*
|
|
KeyframeEffect::GetRenderedDocument() const
|
|
{
|
|
if (!mTarget) {
|
|
return nullptr;
|
|
}
|
|
return mTarget->mElement->GetComposedDoc();
|
|
}
|
|
|
|
nsIPresShell*
|
|
KeyframeEffect::GetPresShell() const
|
|
{
|
|
nsIDocument* doc = GetRenderedDocument();
|
|
if (!doc) {
|
|
return nullptr;
|
|
}
|
|
return doc->GetShell();
|
|
}
|
|
|
|
/* static */ bool
|
|
KeyframeEffect::IsGeometricProperty(const nsCSSPropertyID aProperty)
|
|
{
|
|
MOZ_ASSERT(!nsCSSProps::IsShorthand(aProperty),
|
|
"Property should be a longhand property");
|
|
|
|
switch (aProperty) {
|
|
case eCSSProperty_bottom:
|
|
case eCSSProperty_height:
|
|
case eCSSProperty_left:
|
|
case eCSSProperty_margin_bottom:
|
|
case eCSSProperty_margin_left:
|
|
case eCSSProperty_margin_right:
|
|
case eCSSProperty_margin_top:
|
|
case eCSSProperty_padding_bottom:
|
|
case eCSSProperty_padding_left:
|
|
case eCSSProperty_padding_right:
|
|
case eCSSProperty_padding_top:
|
|
case eCSSProperty_right:
|
|
case eCSSProperty_top:
|
|
case eCSSProperty_width:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/* static */ bool
|
|
KeyframeEffect::CanAnimateTransformOnCompositor(
|
|
const nsIFrame* aFrame,
|
|
AnimationPerformanceWarning::Type& aPerformanceWarning)
|
|
{
|
|
// Disallow OMTA for preserve-3d transform. Note that we check the style property
|
|
// rather than Extend3DContext() since that can recurse back into this function
|
|
// via HasOpacity(). See bug 779598.
|
|
if (aFrame->Combines3DTransformWithAncestors() ||
|
|
aFrame->StyleDisplay()->mTransformStyle == NS_STYLE_TRANSFORM_STYLE_PRESERVE_3D) {
|
|
aPerformanceWarning = AnimationPerformanceWarning::Type::TransformPreserve3D;
|
|
return false;
|
|
}
|
|
// Note that testing BackfaceIsHidden() is not a sufficient test for
|
|
// what we need for animating backface-visibility correctly if we
|
|
// remove the above test for Extend3DContext(); that would require
|
|
// looking at backface-visibility on descendants as well. See bug 1186204.
|
|
if (aFrame->BackfaceIsHidden()) {
|
|
aPerformanceWarning =
|
|
AnimationPerformanceWarning::Type::TransformBackfaceVisibilityHidden;
|
|
return false;
|
|
}
|
|
// Async 'transform' animations of aFrames with SVG transforms is not
|
|
// supported. See bug 779599.
|
|
if (aFrame->IsSVGTransformed()) {
|
|
aPerformanceWarning = AnimationPerformanceWarning::Type::TransformSVG;
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
KeyframeEffect::ShouldBlockAsyncTransformAnimations(
|
|
const nsIFrame* aFrame,
|
|
AnimationPerformanceWarning::Type& aPerformanceWarning) const
|
|
{
|
|
EffectSet* effectSet =
|
|
EffectSet::GetEffectSet(mTarget->mElement, mTarget->mPseudoType);
|
|
for (const AnimationProperty& property : mProperties) {
|
|
// If there is a property for animations level that is overridden by
|
|
// !important rules, it should not block other animations from running
|
|
// on the compositor.
|
|
// NOTE: We don't currently check for !important rules for properties that
|
|
// don't run on the compositor. As result such properties (e.g. margin-left)
|
|
// can still block async animations even if they are overridden by
|
|
// !important rules.
|
|
if (effectSet &&
|
|
effectSet->PropertiesWithImportantRules()
|
|
.HasProperty(property.mProperty) &&
|
|
effectSet->PropertiesForAnimationsLevel()
|
|
.HasProperty(property.mProperty)) {
|
|
continue;
|
|
}
|
|
// Check for geometric properties
|
|
if (IsGeometricProperty(property.mProperty)) {
|
|
aPerformanceWarning =
|
|
AnimationPerformanceWarning::Type::TransformWithGeometricProperties;
|
|
return true;
|
|
}
|
|
|
|
// Check for unsupported transform animations
|
|
if (property.mProperty == eCSSProperty_transform) {
|
|
if (!CanAnimateTransformOnCompositor(aFrame,
|
|
aPerformanceWarning)) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
|
|
// XXX cku temporarily disable async-animation when this frame has any
|
|
// individual transforms before bug 1425837 been fixed.
|
|
if (aFrame->StyleDisplay()->HasIndividualTransform()) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
KeyframeEffect::HasGeometricProperties() const
|
|
{
|
|
for (const AnimationProperty& property : mProperties) {
|
|
if (IsGeometricProperty(property.mProperty)) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void
|
|
KeyframeEffect::SetPerformanceWarning(
|
|
nsCSSPropertyID aProperty,
|
|
const AnimationPerformanceWarning& aWarning)
|
|
{
|
|
for (AnimationProperty& property : mProperties) {
|
|
if (property.mProperty == aProperty &&
|
|
(!property.mPerformanceWarning ||
|
|
*property.mPerformanceWarning != aWarning)) {
|
|
property.mPerformanceWarning = Some(aWarning);
|
|
|
|
nsAutoString localizedString;
|
|
if (nsLayoutUtils::IsAnimationLoggingEnabled() &&
|
|
property.mPerformanceWarning->ToLocalizedString(localizedString)) {
|
|
nsAutoCString logMessage = NS_ConvertUTF16toUTF8(localizedString);
|
|
AnimationUtils::LogAsyncAnimationFailure(logMessage, mTarget->mElement);
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
already_AddRefed<ComputedStyle>
|
|
KeyframeEffect::CreateComputedStyleForAnimationValue(
|
|
nsCSSPropertyID aProperty,
|
|
const AnimationValue& aValue,
|
|
nsPresContext* aPresContext,
|
|
const ComputedStyle* aBaseComputedStyle)
|
|
{
|
|
MOZ_ASSERT(aBaseComputedStyle,
|
|
"CreateComputedStyleForAnimationValue needs to be called "
|
|
"with a valid ComputedStyle");
|
|
|
|
ServoStyleSet* styleSet = aPresContext->StyleSet();
|
|
Element* elementForResolve =
|
|
EffectCompositor::GetElementToRestyle(mTarget->mElement,
|
|
mTarget->mPseudoType);
|
|
MOZ_ASSERT(elementForResolve, "The target element shouldn't be null");
|
|
return styleSet->ResolveServoStyleByAddingAnimation(elementForResolve,
|
|
aBaseComputedStyle,
|
|
aValue.mServo);
|
|
}
|
|
|
|
void
|
|
KeyframeEffect::CalculateCumulativeChangeHint(const ComputedStyle* aComputedStyle)
|
|
{
|
|
mCumulativeChangeHint = nsChangeHint(0);
|
|
|
|
nsPresContext* presContext =
|
|
nsContentUtils::GetContextForContent(mTarget->mElement);
|
|
if (!presContext) {
|
|
// Change hints make no sense if we're not rendered.
|
|
//
|
|
// Actually, we cannot even post them anywhere.
|
|
return;
|
|
}
|
|
|
|
for (const AnimationProperty& property : mProperties) {
|
|
// For opacity property we don't produce any change hints that are not
|
|
// included in nsChangeHint_Hints_CanIgnoreIfNotVisible so we can throttle
|
|
// opacity animations regardless of the change they produce. This
|
|
// optimization is particularly important since it allows us to throttle
|
|
// opacity animations with missing 0%/100% keyframes.
|
|
if (property.mProperty == eCSSProperty_opacity) {
|
|
continue;
|
|
}
|
|
|
|
for (const AnimationPropertySegment& segment : property.mSegments) {
|
|
// In case composite operation is not 'replace' or value is null,
|
|
// we can't throttle animations which will not cause any layout changes
|
|
// on invisible elements because we can't calculate the change hint for
|
|
// such properties until we compose it.
|
|
if (!segment.HasReplaceableValues()) {
|
|
if (property.mProperty != eCSSProperty_transform) {
|
|
mCumulativeChangeHint = ~nsChangeHint_Hints_CanIgnoreIfNotVisible;
|
|
return;
|
|
}
|
|
// We try a little harder to optimize transform animations simply
|
|
// because they are so common (the second-most commonly animated
|
|
// property at the time of writing). So if we encounter a transform
|
|
// segment that needs composing with the underlying value, we just add
|
|
// all the change hints a transform animation is known to be able to
|
|
// generate.
|
|
mCumulativeChangeHint |= nsChangeHint_AddOrRemoveTransform |
|
|
nsChangeHint_RepaintFrame |
|
|
nsChangeHint_UpdateContainingBlock |
|
|
nsChangeHint_UpdateOverflow |
|
|
nsChangeHint_UpdatePostTransformOverflow |
|
|
nsChangeHint_UpdateTransformLayer;
|
|
continue;
|
|
}
|
|
|
|
RefPtr<ComputedStyle> fromContext =
|
|
CreateComputedStyleForAnimationValue(property.mProperty,
|
|
segment.mFromValue,
|
|
presContext,
|
|
aComputedStyle);
|
|
if (!fromContext) {
|
|
mCumulativeChangeHint = ~nsChangeHint_Hints_CanIgnoreIfNotVisible;
|
|
return;
|
|
}
|
|
|
|
RefPtr<ComputedStyle> toContext =
|
|
CreateComputedStyleForAnimationValue(property.mProperty,
|
|
segment.mToValue,
|
|
presContext,
|
|
aComputedStyle);
|
|
if (!toContext) {
|
|
mCumulativeChangeHint = ~nsChangeHint_Hints_CanIgnoreIfNotVisible;
|
|
return;
|
|
}
|
|
|
|
uint32_t equalStructs = 0;
|
|
nsChangeHint changeHint =
|
|
fromContext->CalcStyleDifference(toContext, &equalStructs);
|
|
|
|
mCumulativeChangeHint |= changeHint;
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
KeyframeEffect::SetAnimation(Animation* aAnimation)
|
|
{
|
|
if (mAnimation == aAnimation) {
|
|
return;
|
|
}
|
|
|
|
// Restyle for the old animation.
|
|
RequestRestyle(EffectCompositor::RestyleType::Layer);
|
|
|
|
mAnimation = aAnimation;
|
|
|
|
// The order of these function calls is important:
|
|
// NotifyAnimationTimingUpdated() need the updated mIsRelevant flag to check
|
|
// if it should create the effectSet or not, and MarkCascadeNeedsUpdate()
|
|
// needs a valid effectSet, so we should call them in this order.
|
|
if (mAnimation) {
|
|
mAnimation->UpdateRelevance();
|
|
}
|
|
NotifyAnimationTimingUpdated();
|
|
if (mAnimation) {
|
|
MarkCascadeNeedsUpdate();
|
|
}
|
|
}
|
|
|
|
bool
|
|
KeyframeEffect::CanIgnoreIfNotVisible() const
|
|
{
|
|
if (!AnimationUtils::IsOffscreenThrottlingEnabled()) {
|
|
return false;
|
|
}
|
|
|
|
// FIXME: For further sophisticated optimization we need to check
|
|
// change hint on the segment corresponding to computedTiming.progress.
|
|
return NS_IsHintSubset(
|
|
mCumulativeChangeHint, nsChangeHint_Hints_CanIgnoreIfNotVisible);
|
|
}
|
|
|
|
void
|
|
KeyframeEffect::MaybeUpdateFrameForCompositor()
|
|
{
|
|
nsIFrame* frame = GetStyleFrame();
|
|
if (!frame) {
|
|
return;
|
|
}
|
|
|
|
// FIXME: Bug 1272495: If this effect does not win in the cascade, the
|
|
// NS_FRAME_MAY_BE_TRANSFORMED flag should be removed when the animation
|
|
// will be removed from effect set or the transform keyframes are removed
|
|
// by setKeyframes. The latter case will be hard to solve though.
|
|
for (const AnimationProperty& property : mProperties) {
|
|
if (property.mProperty == eCSSProperty_transform) {
|
|
frame->AddStateBits(NS_FRAME_MAY_BE_TRANSFORMED);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
KeyframeEffect::MarkCascadeNeedsUpdate()
|
|
{
|
|
if (!mTarget) {
|
|
return;
|
|
}
|
|
|
|
EffectSet* effectSet = EffectSet::GetEffectSet(mTarget->mElement,
|
|
mTarget->mPseudoType);
|
|
if (!effectSet) {
|
|
return;
|
|
}
|
|
effectSet->MarkCascadeNeedsUpdate();
|
|
}
|
|
|
|
/* static */ bool
|
|
KeyframeEffect::HasComputedTimingChanged(
|
|
const ComputedTiming& aComputedTiming,
|
|
IterationCompositeOperation aIterationComposite,
|
|
const Nullable<double>& aProgressOnLastCompose,
|
|
uint64_t aCurrentIterationOnLastCompose)
|
|
{
|
|
// Typically we don't need to request a restyle if the progress hasn't
|
|
// changed since the last call to ComposeStyle. The one exception is if the
|
|
// iteration composite mode is 'accumulate' and the current iteration has
|
|
// changed, since that will often produce a different result.
|
|
return aComputedTiming.mProgress != aProgressOnLastCompose ||
|
|
(aIterationComposite == IterationCompositeOperation::Accumulate &&
|
|
aComputedTiming.mCurrentIteration != aCurrentIterationOnLastCompose);
|
|
}
|
|
|
|
bool
|
|
KeyframeEffect::HasComputedTimingChanged() const
|
|
{
|
|
ComputedTiming computedTiming = GetComputedTiming();
|
|
return HasComputedTimingChanged(computedTiming,
|
|
mEffectOptions.mIterationComposite,
|
|
mProgressOnLastCompose,
|
|
mCurrentIterationOnLastCompose);
|
|
}
|
|
|
|
bool
|
|
KeyframeEffect::ContainsAnimatedScale(const nsIFrame* aFrame) const
|
|
{
|
|
if (!IsCurrent()) {
|
|
return false;
|
|
}
|
|
|
|
for (const AnimationProperty& prop : mProperties) {
|
|
if (prop.mProperty != eCSSProperty_transform) {
|
|
continue;
|
|
}
|
|
|
|
AnimationValue baseStyle = BaseStyle(prop.mProperty);
|
|
if (baseStyle.IsNull()) {
|
|
// If we failed to get the base style, we consider it has scale value
|
|
// here just to be safe.
|
|
return true;
|
|
}
|
|
gfx::Size size = baseStyle.GetScaleValue(aFrame);
|
|
if (size != gfx::Size(1.0f, 1.0f)) {
|
|
return true;
|
|
}
|
|
|
|
// This is actually overestimate because there are some cases that combining
|
|
// the base value and from/to value produces 1:1 scale. But it doesn't
|
|
// really matter.
|
|
for (const AnimationPropertySegment& segment : prop.mSegments) {
|
|
if (!segment.mFromValue.IsNull()) {
|
|
gfx::Size from = segment.mFromValue.GetScaleValue(aFrame);
|
|
if (from != gfx::Size(1.0f, 1.0f)) {
|
|
return true;
|
|
}
|
|
}
|
|
if (!segment.mToValue.IsNull()) {
|
|
gfx::Size to = segment.mToValue.GetScaleValue(aFrame);
|
|
if (to != gfx::Size(1.0f, 1.0f)) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void
|
|
KeyframeEffect::UpdateEffectSet(EffectSet* aEffectSet) const
|
|
{
|
|
if (!mInEffectSet) {
|
|
return;
|
|
}
|
|
|
|
EffectSet* effectSet =
|
|
aEffectSet ? aEffectSet
|
|
: EffectSet::GetEffectSet(mTarget->mElement,
|
|
mTarget->mPseudoType);
|
|
if (!effectSet) {
|
|
return;
|
|
}
|
|
|
|
nsIFrame* frame = GetStyleFrame();
|
|
if (HasAnimationOfProperty(eCSSProperty_opacity)) {
|
|
effectSet->SetMayHaveOpacityAnimation();
|
|
EnumerateContinuationsOrIBSplitSiblings(frame,
|
|
[](nsIFrame* aFrame) {
|
|
aFrame->SetMayHaveOpacityAnimation();
|
|
}
|
|
);
|
|
}
|
|
if (HasAnimationOfProperty(eCSSProperty_transform)) {
|
|
effectSet->SetMayHaveTransformAnimation();
|
|
EnumerateContinuationsOrIBSplitSiblings(frame,
|
|
[](nsIFrame* aFrame) {
|
|
aFrame->SetMayHaveTransformAnimation();
|
|
}
|
|
);
|
|
}
|
|
}
|
|
|
|
} // namespace dom
|
|
} // namespace mozilla
|