Files
tubestation/dom/animation/KeyframeEffectReadOnly.cpp
Hiroyuki Ikezoe 7cc9990018 Bug 1340958 - Put computed values into AnimationValueMap instead of hashtable in gecko. r=heycam
Before this patch, we store each computed values in a hashtable,
nsRefPtrHashtable<nsUint32HashKey, RawServoAnimationValue>, for all
KeyframeEffectReadOnly on an element, and convert the ServoAnimationValues of
the hashtable into an nsTArray<ServoAnimationValue*> and then convert
the ServoAnimationValues of the nsTArray into PropertyDeclarationBlock
in rust.  This way was really inefficient.
In this patch, we store the computed values into AnimationValueMap and
convert all AnimationValue in the map into PropertyDeclarationBlock
after EffectCompositor::GetAnimationRule.

MozReview-Commit-ID: EJ2Kl65fVeF
2017-03-17 13:23:21 +09:00

1835 lines
61 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/dom/KeyframeEffectReadOnly.h"
#include "mozilla/dom/KeyframeAnimationOptionsBinding.h"
// For UnrestrictedDoubleOrKeyframeAnimationOptions;
#include "mozilla/dom/CSSPseudoElement.h"
#include "mozilla/dom/KeyframeEffectBinding.h"
#include "mozilla/AnimationRule.h"
#include "mozilla/AnimationUtils.h"
#include "mozilla/AutoRestore.h"
#include "mozilla/EffectSet.h"
#include "mozilla/FloatingPoint.h" // For IsFinite
#include "mozilla/LookAndFeel.h" // For LookAndFeel::GetInt
#include "mozilla/KeyframeUtils.h"
#include "mozilla/ServoBindings.h"
#include "mozilla/TypeTraits.h"
#include "Layers.h" // For Layer
#include "nsComputedDOMStyle.h" // nsComputedDOMStyle::GetStyleContextForElement
#include "nsContentUtils.h" // nsContentUtils::ReportToConsole
#include "nsCSSPropertyIDSet.h"
#include "nsCSSProps.h" // For nsCSSProps::PropHasFlags
#include "nsCSSPseudoElements.h" // For CSSPseudoElementType
#include "nsIPresShell.h"
#include "nsIScriptError.h"
namespace mozilla {
bool
PropertyValuePair::operator==(const PropertyValuePair& aOther) const
{
if (mProperty != aOther.mProperty || mValue != aOther.mValue) {
return false;
}
if (mServoDeclarationBlock == aOther.mServoDeclarationBlock) {
return true;
}
if (!mServoDeclarationBlock || !aOther.mServoDeclarationBlock) {
return false;
}
return Servo_DeclarationBlock_Equals(mServoDeclarationBlock,
aOther.mServoDeclarationBlock);
}
namespace dom {
NS_IMPL_CYCLE_COLLECTION_INHERITED(KeyframeEffectReadOnly,
AnimationEffectReadOnly,
mTarget)
NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(KeyframeEffectReadOnly,
AnimationEffectReadOnly)
NS_IMPL_CYCLE_COLLECTION_TRACE_END
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(KeyframeEffectReadOnly)
NS_INTERFACE_MAP_END_INHERITING(AnimationEffectReadOnly)
NS_IMPL_ADDREF_INHERITED(KeyframeEffectReadOnly, AnimationEffectReadOnly)
NS_IMPL_RELEASE_INHERITED(KeyframeEffectReadOnly, AnimationEffectReadOnly)
KeyframeEffectReadOnly::KeyframeEffectReadOnly(
nsIDocument* aDocument,
const Maybe<OwningAnimationTarget>& aTarget,
const TimingParams& aTiming,
const KeyframeEffectParams& aOptions)
: KeyframeEffectReadOnly(aDocument, aTarget,
new AnimationEffectTimingReadOnly(aDocument,
aTiming),
aOptions)
{
}
KeyframeEffectReadOnly::KeyframeEffectReadOnly(
nsIDocument* aDocument,
const Maybe<OwningAnimationTarget>& aTarget,
AnimationEffectTimingReadOnly* aTiming,
const KeyframeEffectParams& aOptions)
: AnimationEffectReadOnly(aDocument, aTiming)
, mTarget(aTarget)
, mEffectOptions(aOptions)
, mInEffectOnLastAnimationTimingUpdate(false)
, mCumulativeChangeHint(nsChangeHint(0))
{
}
JSObject*
KeyframeEffectReadOnly::WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto)
{
return KeyframeEffectReadOnlyBinding::Wrap(aCx, this, aGivenProto);
}
IterationCompositeOperation
KeyframeEffectReadOnly::IterationComposite() const
{
return mEffectOptions.mIterationComposite;
}
CompositeOperation
KeyframeEffectReadOnly::Composite() const
{
return mEffectOptions.mComposite;
}
void
KeyframeEffectReadOnly::NotifyAnimationTimingUpdated()
{
UpdateTargetRegistration();
// If the effect is not relevant it will be removed from the target
// element's effect set. However, effects not in the effect set
// will not be included in the set of candidate effects for running on
// the compositor and hence they won't have their compositor status
// updated. As a result, we need to make sure we clear their compositor
// status here.
bool isRelevant = mAnimation && mAnimation->IsRelevant();
if (!isRelevant) {
ResetIsRunningOnCompositor();
}
// Detect changes to "in effect" status since we need to recalculate the
// animation cascade for this element whenever that changes.
bool inEffect = IsInEffect();
if (inEffect != mInEffectOnLastAnimationTimingUpdate) {
MarkCascadeNeedsUpdate();
mInEffectOnLastAnimationTimingUpdate = inEffect;
}
// Request restyle if necessary.
if (mAnimation && !mProperties.IsEmpty() && HasComputedTimingChanged()) {
EffectCompositor::RestyleType restyleType =
CanThrottle() ?
EffectCompositor::RestyleType::Throttled :
EffectCompositor::RestyleType::Standard;
RequestRestyle(restyleType);
}
// If we're no longer "in effect", our ComposeStyle method will never be
// called and we will never have a chance to update mProgressOnLastCompose
// and mCurrentIterationOnLastCompose.
// We clear them here to ensure that if we later become "in effect" we will
// request a restyle (above).
if (!inEffect) {
mProgressOnLastCompose.SetNull();
mCurrentIterationOnLastCompose = 0;
}
}
static bool
KeyframesEqualIgnoringComputedOffsets(const nsTArray<Keyframe>& aLhs,
const nsTArray<Keyframe>& aRhs)
{
if (aLhs.Length() != aRhs.Length()) {
return false;
}
for (size_t i = 0, len = aLhs.Length(); i < len; ++i) {
const Keyframe& a = aLhs[i];
const Keyframe& b = aRhs[i];
if (a.mOffset != b.mOffset ||
a.mTimingFunction != b.mTimingFunction ||
a.mPropertyValues != b.mPropertyValues) {
return false;
}
}
return true;
}
// https://w3c.github.io/web-animations/#dom-keyframeeffect-setkeyframes
void
KeyframeEffectReadOnly::SetKeyframes(JSContext* aContext,
JS::Handle<JSObject*> aKeyframes,
ErrorResult& aRv)
{
nsTArray<Keyframe> keyframes =
KeyframeUtils::GetKeyframesFromObject(aContext, mDocument, aKeyframes, aRv);
if (aRv.Failed()) {
return;
}
RefPtr<nsStyleContext> styleContext = GetTargetStyleContext();
SetKeyframes(Move(keyframes), styleContext);
}
void
KeyframeEffectReadOnly::SetKeyframes(nsTArray<Keyframe>&& aKeyframes,
nsStyleContext* aStyleContext)
{
DoSetKeyframes(Move(aKeyframes), Move(aStyleContext));
}
void
KeyframeEffectReadOnly::SetKeyframes(
nsTArray<Keyframe>&& aKeyframes,
const ServoComputedStyleValues& aServoValues)
{
DoSetKeyframes(Move(aKeyframes), aServoValues);
}
template<typename StyleType>
void
KeyframeEffectReadOnly::DoSetKeyframes(nsTArray<Keyframe>&& aKeyframes,
StyleType&& aStyle)
{
static_assert(IsSame<StyleType, nsStyleContext*>::value ||
IsSame<StyleType, const ServoComputedStyleValues&>::value,
"StyleType should be nsStyleContext* or "
"const ServoComputedStyleValues&");
if (KeyframesEqualIgnoringComputedOffsets(aKeyframes, mKeyframes)) {
return;
}
mKeyframes = Move(aKeyframes);
// Apply distribute spacing irrespective of the spacing mode. We will apply
// the specified spacing mode when we generate computed animation property
// values from the keyframes since both operations require a style context
// and need to be performed whenever the style context changes.
KeyframeUtils::ApplyDistributeSpacing(mKeyframes);
if (mAnimation && mAnimation->IsRelevant()) {
nsNodeUtils::AnimationChanged(mAnimation);
}
// We need to call UpdateProperties() if the StyleType is
// 'const ServoComputedStyleValues&' (i.e. not a pointer) or nsStyleContext*
// is not nullptr.
if (!IsPointer<StyleType>::value || aStyle) {
UpdateProperties(aStyle);
MaybeUpdateFrameForCompositor();
}
}
const AnimationProperty*
KeyframeEffectReadOnly::GetEffectiveAnimationOfProperty(
nsCSSPropertyID aProperty) const
{
EffectSet* effectSet =
EffectSet::GetEffectSet(mTarget->mElement, mTarget->mPseudoType);
for (size_t propIdx = 0, propEnd = mProperties.Length();
propIdx != propEnd; ++propIdx) {
if (aProperty == mProperties[propIdx].mProperty) {
const AnimationProperty* result = &mProperties[propIdx];
// Skip if there is a property of animation level that is overridden
// by !important rules.
if (effectSet &&
effectSet->PropertiesWithImportantRules()
.HasProperty(result->mProperty) &&
effectSet->PropertiesForAnimationsLevel()
.HasProperty(result->mProperty)) {
result = nullptr;
}
return result;
}
}
return nullptr;
}
bool
KeyframeEffectReadOnly::HasAnimationOfProperty(nsCSSPropertyID aProperty) const
{
for (const AnimationProperty& property : mProperties) {
if (property.mProperty == aProperty) {
return true;
}
}
return false;
}
#ifdef DEBUG
bool
SpecifiedKeyframeArraysAreEqual(const nsTArray<Keyframe>& aA,
const nsTArray<Keyframe>& aB)
{
if (aA.Length() != aB.Length()) {
return false;
}
for (size_t i = 0; i < aA.Length(); i++) {
const Keyframe& a = aA[i];
const Keyframe& b = aB[i];
if (a.mOffset != b.mOffset ||
a.mTimingFunction != b.mTimingFunction ||
a.mPropertyValues != b.mPropertyValues) {
return false;
}
}
return true;
}
#endif
void
KeyframeEffectReadOnly::UpdateProperties(nsStyleContext* aStyleContext)
{
MOZ_ASSERT(aStyleContext);
if (!mDocument->IsStyledByServo()) {
DoUpdateProperties(Move(aStyleContext));
return;
}
const ServoComputedValues* currentStyle =
aStyleContext->StyleSource().AsServoComputedValues();
const ServoComputedValues* parentStyle =
aStyleContext->GetParent()
? aStyleContext->GetParent()->StyleSource().AsServoComputedValues()
: nullptr;
const ServoComputedStyleValues servoValues = { currentStyle, parentStyle };
DoUpdateProperties(servoValues);
}
void
KeyframeEffectReadOnly::UpdateProperties(
const ServoComputedStyleValues& aServoValues)
{
DoUpdateProperties(aServoValues);
}
template<typename StyleType>
void
KeyframeEffectReadOnly::DoUpdateProperties(StyleType&& aStyle)
{
MOZ_ASSERT_IF(IsPointer<StyleType>::value, aStyle);
// Skip updating properties when we are composing style.
// FIXME: Bug 1324966. Drop this check once we have a function to get
// nsStyleContext without resolving animating style.
MOZ_DIAGNOSTIC_ASSERT(!mIsComposingStyle,
"Should not be called while processing ComposeStyle()");
if (mIsComposingStyle) {
return;
}
nsTArray<AnimationProperty> properties =
BuildProperties(Forward<StyleType>(aStyle));
// We need to update base styles even if any properties are not changed at all
// since base styles might have been changed due to parent style changes, etc.
EnsureBaseStyles(aStyle, properties);
if (mProperties == properties) {
return;
}
// Preserve the state of the mIsRunningOnCompositor flag.
nsCSSPropertyIDSet runningOnCompositorProperties;
for (const AnimationProperty& property : mProperties) {
if (property.mIsRunningOnCompositor) {
runningOnCompositorProperties.AddProperty(property.mProperty);
}
}
mProperties = Move(properties);
for (AnimationProperty& property : mProperties) {
property.mIsRunningOnCompositor =
runningOnCompositorProperties.HasProperty(property.mProperty);
}
CalculateCumulativeChangeHint(aStyle);
MarkCascadeNeedsUpdate();
RequestRestyle(EffectCompositor::RestyleType::Layer);
}
/* static */ StyleAnimationValue
KeyframeEffectReadOnly::CompositeValue(
nsCSSPropertyID aProperty,
const StyleAnimationValue& aValueToComposite,
const StyleAnimationValue& aUnderlyingValue,
CompositeOperation aCompositeOperation)
{
// Just return the underlying value if |aValueToComposite| is null
// (i.e. missing keyframe).
if (aValueToComposite.IsNull()) {
return aUnderlyingValue;
}
switch (aCompositeOperation) {
case dom::CompositeOperation::Replace:
return aValueToComposite;
case dom::CompositeOperation::Add: {
StyleAnimationValue result(aValueToComposite);
return StyleAnimationValue::Add(aProperty,
aUnderlyingValue,
Move(result));
}
case dom::CompositeOperation::Accumulate: {
StyleAnimationValue result(aValueToComposite);
return StyleAnimationValue::Accumulate(aProperty,
aUnderlyingValue,
Move(result));
}
default:
MOZ_ASSERT_UNREACHABLE("Unknown compisite operation type");
break;
}
return StyleAnimationValue();
}
StyleAnimationValue
KeyframeEffectReadOnly::ResolveBaseStyle(nsCSSPropertyID aProperty,
nsStyleContext* aStyleContext)
{
StyleAnimationValue result;
if (mBaseStyleValues.Get(aProperty, &result)) {
return result;
}
RefPtr<nsStyleContext> styleContextWithoutAnimation =
aStyleContext->PresContext()->StyleSet()->AsGecko()->
ResolveStyleByRemovingAnimation(mTarget->mElement,
aStyleContext,
eRestyle_AllHintsWithAnimations);
DebugOnly<bool> success =
StyleAnimationValue::ExtractComputedValue(aProperty,
styleContextWithoutAnimation,
result);
MOZ_ASSERT(success, "Should be able to extract computed animation value");
MOZ_ASSERT(!result.IsNull(), "Should have a valid StyleAnimationValue");
mBaseStyleValues.Put(aProperty, result);
return result;
}
StyleAnimationValue
KeyframeEffectReadOnly::GetUnderlyingStyle(
nsCSSPropertyID aProperty,
const RefPtr<AnimValuesStyleRule>& aAnimationRule)
{
StyleAnimationValue result;
if (aAnimationRule && aAnimationRule->HasValue(aProperty)) {
// If we have already composed style for the property, we use the style
// as the underlying style.
DebugOnly<bool> success = aAnimationRule->GetValue(aProperty, result);
MOZ_ASSERT(success, "AnimValuesStyleRule::GetValue should not fail");
} else {
// If we are composing with composite operation that is not 'replace'
// and we have not composed style for the property yet, we have to get
// the base style for the property.
result = BaseStyle(aProperty);
}
return result;
}
StyleAnimationValue
KeyframeEffectReadOnly::CompositeValue(
nsCSSPropertyID aProperty,
const RefPtr<AnimValuesStyleRule>& aAnimationRule,
const StyleAnimationValue& aValueToComposite,
CompositeOperation aCompositeOperation)
{
MOZ_ASSERT(mTarget, "CompositeValue should be called with target element");
// FIXME: Bug 1311257: Get the base value for the servo backend.
if (mDocument->IsStyledByServo()) {
return aValueToComposite;
}
StyleAnimationValue underlyingValue =
GetUnderlyingStyle(aProperty, aAnimationRule);
return CompositeValue(aProperty,
aValueToComposite,
underlyingValue,
aCompositeOperation);
}
void
KeyframeEffectReadOnly::EnsureBaseStyles(
nsStyleContext* aStyleContext,
const nsTArray<AnimationProperty>& aProperties)
{
if (!mTarget) {
return;
}
mBaseStyleValues.Clear();
for (const AnimationProperty& property : aProperties) {
for (const AnimationPropertySegment& segment : property.mSegments) {
if (segment.HasReplacableValues()) {
continue;
}
Unused << ResolveBaseStyle(property.mProperty, aStyleContext);
break;
}
}
}
void
KeyframeEffectReadOnly::WillComposeStyle()
{
ComputedTiming computedTiming = GetComputedTiming();
mProgressOnLastCompose = computedTiming.mProgress;
mCurrentIterationOnLastCompose = computedTiming.mCurrentIteration;
}
void
KeyframeEffectReadOnly::ComposeStyleRule(
RefPtr<AnimValuesStyleRule>& aStyleRule,
const AnimationProperty& aProperty,
const AnimationPropertySegment& aSegment,
const ComputedTiming& aComputedTiming)
{
StyleAnimationValue fromValue =
CompositeValue(aProperty.mProperty, aStyleRule,
aSegment.mFromValue.mGecko,
aSegment.mFromComposite);
StyleAnimationValue toValue =
CompositeValue(aProperty.mProperty, aStyleRule,
aSegment.mToValue.mGecko,
aSegment.mToComposite);
if (fromValue.IsNull() || toValue.IsNull()) {
return;
}
if (!aStyleRule) {
// Allocate the style rule now that we know we have animation data.
aStyleRule = new AnimValuesStyleRule();
}
// Iteration composition for accumulate
if (mEffectOptions.mIterationComposite ==
IterationCompositeOperation::Accumulate &&
aComputedTiming.mCurrentIteration > 0) {
const AnimationPropertySegment& lastSegment =
aProperty.mSegments.LastElement();
// FIXME: Bug 1293492: Add a utility function to calculate both of
// below StyleAnimationValues.
StyleAnimationValue lastValue = lastSegment.mToValue.mGecko.IsNull()
? GetUnderlyingStyle(aProperty.mProperty, aStyleRule)
: lastSegment.mToValue.mGecko;
fromValue =
StyleAnimationValue::Accumulate(aProperty.mProperty,
lastValue,
Move(fromValue),
aComputedTiming.mCurrentIteration);
toValue =
StyleAnimationValue::Accumulate(aProperty.mProperty,
lastValue,
Move(toValue),
aComputedTiming.mCurrentIteration);
}
// Special handling for zero-length segments
if (aSegment.mToKey == aSegment.mFromKey) {
if (aComputedTiming.mProgress.Value() < 0) {
aStyleRule->AddValue(aProperty.mProperty, Move(fromValue));
} else {
aStyleRule->AddValue(aProperty.mProperty, Move(toValue));
}
return;
}
double positionInSegment =
(aComputedTiming.mProgress.Value() - aSegment.mFromKey) /
(aSegment.mToKey - aSegment.mFromKey);
double valuePosition =
ComputedTimingFunction::GetPortion(aSegment.mTimingFunction,
positionInSegment,
aComputedTiming.mBeforeFlag);
MOZ_ASSERT(IsFinite(valuePosition), "Position value should be finite");
StyleAnimationValue val;
if (StyleAnimationValue::Interpolate(aProperty.mProperty,
fromValue,
toValue,
valuePosition, val)) {
aStyleRule->AddValue(aProperty.mProperty, Move(val));
} else if (valuePosition < 0.5) {
aStyleRule->AddValue(aProperty.mProperty, Move(fromValue));
} else {
aStyleRule->AddValue(aProperty.mProperty, Move(toValue));
}
}
// Bug 1333311 - We use two branches for Gecko and Stylo. However, it's
// better to remove the duplicated code.
void
KeyframeEffectReadOnly::ComposeStyleRule(
const RawServoAnimationValueMap& aAnimationValues,
const AnimationProperty& aProperty,
const AnimationPropertySegment& aSegment,
const ComputedTiming& aComputedTiming)
{
// Bug 1329878 - Stylo: Implement accumulate and addition on Servo
// AnimationValue.
RawServoAnimationValue* servoFromValue = aSegment.mFromValue.mServo;
RawServoAnimationValue* servoToValue = aSegment.mToValue.mServo;
// For unsupported or non-animatable animation types, we get nullptrs.
if (!servoFromValue || !servoToValue) {
NS_ERROR("Compose style for unsupported or non-animatable property, "
"so get invalid RawServoAnimationValues");
return;
}
// Special handling for zero-length segments
if (aSegment.mToKey == aSegment.mFromKey) {
if (aComputedTiming.mProgress.Value() < 0) {
Servo_AnimationValueMap_Push(&aAnimationValues,
aProperty.mProperty,
servoFromValue);
} else {
Servo_AnimationValueMap_Push(&aAnimationValues,
aProperty.mProperty,
servoToValue);
}
return;
}
double positionInSegment =
(aComputedTiming.mProgress.Value() - aSegment.mFromKey) /
(aSegment.mToKey - aSegment.mFromKey);
double valuePosition =
ComputedTimingFunction::GetPortion(aSegment.mTimingFunction,
positionInSegment,
aComputedTiming.mBeforeFlag);
MOZ_ASSERT(IsFinite(valuePosition), "Position value should be finite");
RefPtr<RawServoAnimationValue> interpolated =
Servo_AnimationValues_Interpolate(servoFromValue,
servoToValue,
valuePosition).Consume();
if (interpolated) {
Servo_AnimationValueMap_Push(&aAnimationValues,
aProperty.mProperty,
interpolated);
} else if (valuePosition < 0.5) {
Servo_AnimationValueMap_Push(&aAnimationValues,
aProperty.mProperty,
servoFromValue);
} else {
Servo_AnimationValueMap_Push(&aAnimationValues,
aProperty.mProperty,
servoToValue);
}
}
template<typename ComposeAnimationResult>
void
KeyframeEffectReadOnly::ComposeStyle(
ComposeAnimationResult&& aComposeResult,
const nsCSSPropertyIDSet& aPropertiesToSkip)
{
MOZ_DIAGNOSTIC_ASSERT(!mIsComposingStyle,
"Should not be called recursively");
if (mIsComposingStyle) {
return;
}
AutoRestore<bool> isComposingStyle(mIsComposingStyle);
mIsComposingStyle = true;
ComputedTiming computedTiming = GetComputedTiming();
// If the progress is null, we don't have fill data for the current
// time so we shouldn't animate.
if (computedTiming.mProgress.IsNull()) {
return;
}
for (size_t propIdx = 0, propEnd = mProperties.Length();
propIdx != propEnd; ++propIdx)
{
const AnimationProperty& prop = mProperties[propIdx];
MOZ_ASSERT(prop.mSegments[0].mFromKey == 0.0, "incorrect first from key");
MOZ_ASSERT(prop.mSegments[prop.mSegments.Length() - 1].mToKey == 1.0,
"incorrect last to key");
if (aPropertiesToSkip.HasProperty(prop.mProperty)) {
continue;
}
MOZ_ASSERT(prop.mSegments.Length() > 0,
"property should not be in animations if it has no segments");
// FIXME: Maybe cache the current segment?
const AnimationPropertySegment *segment = prop.mSegments.Elements(),
*segmentEnd = segment + prop.mSegments.Length();
while (segment->mToKey <= computedTiming.mProgress.Value()) {
MOZ_ASSERT(segment->mFromKey <= segment->mToKey, "incorrect keys");
if ((segment+1) == segmentEnd) {
break;
}
++segment;
MOZ_ASSERT(segment->mFromKey == (segment-1)->mToKey, "incorrect keys");
}
MOZ_ASSERT(segment->mFromKey <= segment->mToKey, "incorrect keys");
MOZ_ASSERT(segment >= prop.mSegments.Elements() &&
size_t(segment - prop.mSegments.Elements()) <
prop.mSegments.Length(),
"out of array bounds");
ComposeStyleRule(Forward<ComposeAnimationResult>(aComposeResult),
prop,
*segment,
computedTiming);
}
}
bool
KeyframeEffectReadOnly::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
KeyframeEffectReadOnly::SetIsRunningOnCompositor(nsCSSPropertyID aProperty,
bool aIsRunning)
{
MOZ_ASSERT(nsCSSProps::PropHasFlags(aProperty,
CSS_PROPERTY_CAN_ANIMATE_ON_COMPOSITOR),
"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
KeyframeEffectReadOnly::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,
nsAString& aInvalidPacedProperty,
CallerType aCallerType,
ErrorResult& aRv)
{
KeyframeEffectParams result;
if (!aOptions.IsUnrestrictedDouble()) {
const KeyframeEffectOptions& options =
KeyframeEffectOptionsFromUnion(aOptions);
KeyframeEffectParams::ParseSpacing(options.mSpacing,
result.mSpacingMode,
result.mPacedProperty,
aInvalidPacedProperty,
aCallerType,
aRv);
// Ignore iterationComposite if the Web Animations API is not enabled,
// then the default value 'Replace' will be used.
if (AnimationUtils::IsCoreAPIEnabledForCaller(aCallerType)) {
result.mIterationComposite = options.mIterationComposite;
result.mComposite = options.mComposite;
}
}
return result;
}
/* static */ Maybe<OwningAnimationTarget>
KeyframeEffectReadOnly::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>
KeyframeEffectReadOnly::ConstructKeyframeEffect(
const GlobalObject& aGlobal,
const Nullable<ElementOrCSSPseudoElement>& aTarget,
JS::Handle<JSObject*> aKeyframes,
const OptionsType& aOptions,
ErrorResult& aRv)
{
nsIDocument* doc = AnimationUtils::GetCurrentRealmDocument(aGlobal.Context());
if (!doc) {
aRv.Throw(NS_ERROR_FAILURE);
return nullptr;
}
TimingParams timingParams =
TimingParams::FromOptionsUnion(aOptions, doc, aRv);
if (aRv.Failed()) {
return nullptr;
}
nsAutoString invalidPacedProperty;
KeyframeEffectParams effectOptions =
KeyframeEffectParamsFromUnion(aOptions, invalidPacedProperty,
aGlobal.CallerType(), aRv);
if (aRv.Failed()) {
return nullptr;
}
if (!invalidPacedProperty.IsEmpty()) {
const char16_t* params[] = { invalidPacedProperty.get() };
nsContentUtils::ReportToConsole(nsIScriptError::warningFlag,
NS_LITERAL_CSTRING("Animation"),
doc,
nsContentUtils::eDOM_PROPERTIES,
"UnanimatablePacedProperty",
params, ArrayLength(params));
}
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>
KeyframeEffectReadOnly::ConstructKeyframeEffect(const GlobalObject& aGlobal,
KeyframeEffectReadOnly& aSource,
ErrorResult& aRv)
{
nsIDocument* doc = AnimationUtils::GetCurrentRealmDocument(aGlobal.Context());
if (!doc) {
aRv.Throw(NS_ERROR_FAILURE);
return nullptr;
}
// Create a new KeyframeEffectReadOnly object with aSource's target,
// iteration composite operation, composite operation, and spacing mode.
// The constructor creates a new AnimationEffect(ReadOnly) 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.
// FIXME: Bug 1314537: We have to make sure SharedKeyframeList is handled
// properly.
effect->mKeyframes = aSource.mKeyframes;
effect->mProperties = aSource.mProperties;
return effect.forget();
}
template<typename StyleType>
nsTArray<AnimationProperty>
KeyframeEffectReadOnly::BuildProperties(StyleType&& aStyle)
{
static_assert(IsSame<StyleType, nsStyleContext*>::value ||
IsSame<StyleType, const ServoComputedStyleValues&>::value,
"StyleType should be nsStyleContext* or "
"const ServoComputedStyleValues&");
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);
nsTArray<ComputedKeyframeValues> computedValues =
KeyframeUtils::GetComputedKeyframeValues(keyframesCopy,
mTarget->mElement,
aStyle);
// FIXME: Bug 1332633: we have to implement ComputeDistance for
// RawServoAnimationValue.
if (mEffectOptions.mSpacingMode == SpacingMode::paced &&
!mDocument->IsStyledByServo()) {
KeyframeUtils::ApplySpacing(keyframesCopy, SpacingMode::paced,
mEffectOptions.mPacedProperty,
computedValues, aStyle);
}
result =
KeyframeUtils::GetAnimationPropertiesFromKeyframes(
keyframesCopy,
computedValues,
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;
}
void
KeyframeEffectReadOnly::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) {
EffectSet* effectSet =
EffectSet::GetOrCreateEffectSet(mTarget->mElement, mTarget->mPseudoType);
effectSet->AddEffect(*this);
} else {
UnregisterTarget();
}
}
void
KeyframeEffectReadOnly::UnregisterTarget()
{
EffectSet* effectSet =
EffectSet::GetEffectSet(mTarget->mElement, mTarget->mPseudoType);
if (effectSet) {
effectSet->RemoveEffect(*this);
if (effectSet->IsEmpty()) {
EffectSet::DestroyEffectSet(mTarget->mElement, mTarget->mPseudoType);
}
}
}
void
KeyframeEffectReadOnly::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<nsStyleContext>
KeyframeEffectReadOnly::GetTargetStyleContext()
{
nsIPresShell* shell = GetPresShell();
if (!shell) {
return nullptr;
}
MOZ_ASSERT(mTarget,
"Should only have a presshell when we have a target element");
nsIAtom* pseudo = mTarget->mPseudoType < CSSPseudoElementType::Count
? nsCSSPseudoElements::GetPseudoAtom(mTarget->mPseudoType)
: nullptr;
return nsComputedDOMStyle::GetStyleContextForElement(mTarget->mElement,
pseudo,
shell);
}
#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<KeyframeEffectReadOnly>
KeyframeEffectReadOnly::Constructor(
const GlobalObject& aGlobal,
const Nullable<ElementOrCSSPseudoElement>& aTarget,
JS::Handle<JSObject*> aKeyframes,
const UnrestrictedDoubleOrKeyframeEffectOptions& aOptions,
ErrorResult& aRv)
{
return ConstructKeyframeEffect<KeyframeEffectReadOnly>(aGlobal, aTarget,
aKeyframes, aOptions,
aRv);
}
/* static */ already_AddRefed<KeyframeEffectReadOnly>
KeyframeEffectReadOnly::Constructor(const GlobalObject& aGlobal,
KeyframeEffectReadOnly& aSource,
ErrorResult& aRv)
{
return ConstructKeyframeEffect<KeyframeEffectReadOnly>(aGlobal, aSource, aRv);
}
void
KeyframeEffectReadOnly::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:
NS_NOTREACHED("Animation of unsupported pseudo-type");
aRv.SetNull();
}
}
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
KeyframeEffectReadOnly::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;
nsXPIDLString 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.mGecko !=
segment.mToValue.mGecko) {
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
KeyframeEffectReadOnly::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;
}
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.Construct(keyframe.mComposite.value());
}
JS::Rooted<JS::Value> keyframeJSValue(aCx);
if (!ToJSValue(aCx, keyframeDict, &keyframeJSValue)) {
aRv.Throw(NS_ERROR_FAILURE);
return;
}
JS::Rooted<JSObject*> keyframeObject(aCx, &keyframeJSValue.toObject());
for (const PropertyValuePair& propertyValue : keyframe.mPropertyValues) {
nsAutoString stringValue;
if (propertyValue.mServoDeclarationBlock) {
Servo_DeclarationBlock_SerializeOneValue(
propertyValue.mServoDeclarationBlock,
propertyValue.mProperty, &stringValue);
} else if (nsCSSProps::IsShorthand(propertyValue.mProperty)) {
// nsCSSValue::AppendToString does not accept shorthands properties but
// works with token stream values if we pass eCSSProperty_UNKNOWN as
// the property.
propertyValue.mValue.AppendToString(
eCSSProperty_UNKNOWN, stringValue, nsCSSValue::eNormalized);
} else {
nsCSSValue cssValue = propertyValue.mValue;
if (cssValue.GetUnit() == eCSSUnit_Null) {
// We use an uninitialized nsCSSValue to represent the
// "neutral value". We currently only do this for keyframes generated
// from CSS animations with missing 0%/100% keyframes. Furthermore,
// currently (at least until bug 1339334) keyframes generated from
// CSS animations only contain longhand properties so we only need to
// handle null nsCSSValues for longhand properties.
DebugOnly<bool> uncomputeResult =
StyleAnimationValue::UncomputeValue(
propertyValue.mProperty, Move(BaseStyle(propertyValue.mProperty)),
cssValue);
MOZ_ASSERT(uncomputeResult,
"Unable to get specified value from computed value");
MOZ_ASSERT(cssValue.GetUnit() != eCSSUnit_Null,
"Got null computed value");
}
cssValue.AppendToString(propertyValue.mProperty,
stringValue, nsCSSValue::eNormalized);
}
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
KeyframeEffectReadOnly::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
KeyframeEffectReadOnly::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 = GetAnimationFrame();
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;
}
// 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 (CanIgnoreIfNotVisible()) {
nsIPresShell* presShell = GetPresShell();
if ((presShell && !presShell->IsActive()) ||
frame->IsScrolledOutOfView()) {
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");
layers::Layer* layer =
FrameLayerBuilder::GetDedicatedLayer(frame, record.mLayerType);
// Unthrottle if the layer needs to be brought up to date
if (!layer ||
effectSet->GetAnimationGeneration() !=
layer->GetAnimationGeneration()) {
return false;
}
// If this is a transform animation that affects the overflow region,
// we should unthrottle the animation periodically.
if (record.mProperty == eCSSProperty_transform &&
!CanThrottleTransformChanges(*frame)) {
return false;
}
}
for (const AnimationProperty& property : mProperties) {
if (!property.mIsRunningOnCompositor) {
return false;
}
}
return true;
}
bool
KeyframeEffectReadOnly::CanThrottleTransformChanges(nsIFrame& aFrame) const
{
// 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;
}
TimeStamp now = aFrame.PresContext()->RefreshDriver()->MostRecentRefresh();
EffectSet* effectSet = EffectSet::GetEffectSet(mTarget->mElement,
mTarget->mPseudoType);
MOZ_ASSERT(effectSet, "CanThrottleTransformChanges is expected to be called"
" on an effect in an effect set");
MOZ_ASSERT(mAnimation, "CanThrottleTransformChanges is expected to be called"
" on an effect with a parent animation");
TimeStamp lastSyncTime = effectSet->LastTransformSyncTime();
// If this animation can cause overflow, we can throttle some of the ticks.
if (!lastSyncTime.IsNull() &&
(now - lastSyncTime) < OverflowRegionRefreshInterval()) {
return true;
}
// 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*
KeyframeEffectReadOnly::GetAnimationFrame() const
{
if (!mTarget) {
return nullptr;
}
nsIFrame* frame = mTarget->mElement->GetPrimaryFrame();
if (!frame) {
return nullptr;
}
if (mTarget->mPseudoType == CSSPseudoElementType::before) {
frame = nsLayoutUtils::GetBeforeFrame(frame);
} else if (mTarget->mPseudoType == CSSPseudoElementType::after) {
frame = nsLayoutUtils::GetAfterFrame(frame);
} else {
MOZ_ASSERT(mTarget->mPseudoType == CSSPseudoElementType::NotPseudo,
"unknown mTarget->mPseudoType");
}
if (!frame) {
return nullptr;
}
return nsLayoutUtils::GetStyleFrame(frame);
}
nsIDocument*
KeyframeEffectReadOnly::GetRenderedDocument() const
{
if (!mTarget) {
return nullptr;
}
return mTarget->mElement->GetComposedDoc();
}
nsIPresShell*
KeyframeEffectReadOnly::GetPresShell() const
{
nsIDocument* doc = GetRenderedDocument();
if (!doc) {
return nullptr;
}
return doc->GetShell();
}
/* static */ bool
KeyframeEffectReadOnly::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
KeyframeEffectReadOnly::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
KeyframeEffectReadOnly::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;
}
}
}
return false;
}
bool
KeyframeEffectReadOnly::HasGeometricProperties() const
{
for (const AnimationProperty& property : mProperties) {
if (IsGeometricProperty(property.mProperty)) {
return true;
}
}
return false;
}
void
KeyframeEffectReadOnly::SetPerformanceWarning(
nsCSSPropertyID aProperty,
const AnimationPerformanceWarning& aWarning)
{
for (AnimationProperty& property : mProperties) {
if (property.mProperty == aProperty &&
(!property.mPerformanceWarning ||
*property.mPerformanceWarning != aWarning)) {
property.mPerformanceWarning = Some(aWarning);
nsXPIDLString localizedString;
if (nsLayoutUtils::IsAnimationLoggingEnabled() &&
property.mPerformanceWarning->ToLocalizedString(localizedString)) {
nsAutoCString logMessage = NS_ConvertUTF16toUTF8(localizedString);
AnimationUtils::LogAsyncAnimationFailure(logMessage, mTarget->mElement);
}
return;
}
}
}
static already_AddRefed<nsStyleContext>
CreateStyleContextForAnimationValue(nsCSSPropertyID aProperty,
const StyleAnimationValue& aValue,
nsStyleContext* aBaseStyleContext)
{
MOZ_ASSERT(aBaseStyleContext,
"CreateStyleContextForAnimationValue needs to be called "
"with a valid nsStyleContext");
RefPtr<AnimValuesStyleRule> styleRule = new AnimValuesStyleRule();
styleRule->AddValue(aProperty, aValue);
nsCOMArray<nsIStyleRule> rules;
rules.AppendObject(styleRule);
MOZ_ASSERT(aBaseStyleContext->PresContext()->StyleSet()->IsGecko(),
"ServoStyleSet should not use StyleAnimationValue for animations");
nsStyleSet* styleSet =
aBaseStyleContext->PresContext()->StyleSet()->AsGecko();
RefPtr<nsStyleContext> styleContext =
styleSet->ResolveStyleByAddingRules(aBaseStyleContext, rules);
// We need to call StyleData to generate cached data for the style context.
// Otherwise CalcStyleDifference returns no meaningful result.
styleContext->StyleData(nsCSSProps::kSIDTable[aProperty]);
return styleContext.forget();
}
void
KeyframeEffectReadOnly::CalculateCumulativeChangeHint(
nsStyleContext *aStyleContext)
{
if (mDocument->IsStyledByServo()) {
// FIXME (bug 1303235): Do this for Servo too
return;
}
mCumulativeChangeHint = nsChangeHint(0);
for (const AnimationProperty& property : mProperties) {
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.HasReplacableValues()) {
mCumulativeChangeHint = ~nsChangeHint_Hints_CanIgnoreIfNotVisible;
return;
}
RefPtr<nsStyleContext> fromContext =
CreateStyleContextForAnimationValue(property.mProperty,
segment.mFromValue.mGecko,
aStyleContext);
RefPtr<nsStyleContext> toContext =
CreateStyleContextForAnimationValue(property.mProperty,
segment.mToValue.mGecko,
aStyleContext);
uint32_t equalStructs = 0;
uint32_t samePointerStructs = 0;
nsChangeHint changeHint =
fromContext->CalcStyleDifference(toContext,
nsChangeHint(0),
&equalStructs,
&samePointerStructs);
mCumulativeChangeHint |= changeHint;
}
}
}
void
KeyframeEffectReadOnly::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
KeyframeEffectReadOnly::CanIgnoreIfNotVisible() const
{
if (!AnimationUtils::IsOffscreenThrottlingEnabled()) {
return false;
}
// FIXME (bug 1303235): We don't calculate mCumulativeChangeHint for
// the Servo backend yet
if (mDocument->IsStyledByServo()) {
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
KeyframeEffectReadOnly::MaybeUpdateFrameForCompositor()
{
nsIFrame* frame = GetAnimationFrame();
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
KeyframeEffectReadOnly::MarkCascadeNeedsUpdate()
{
if (!mTarget) {
return;
}
EffectSet* effectSet = EffectSet::GetEffectSet(mTarget->mElement,
mTarget->mPseudoType);
if (!effectSet) {
return;
}
effectSet->MarkCascadeNeedsUpdate();
}
bool
KeyframeEffectReadOnly::HasComputedTimingChanged() const
{
// 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.
ComputedTiming computedTiming = GetComputedTiming();
return computedTiming.mProgress != mProgressOnLastCompose ||
(mEffectOptions.mIterationComposite ==
IterationCompositeOperation::Accumulate &&
computedTiming.mCurrentIteration !=
mCurrentIterationOnLastCompose);
}
bool
KeyframeEffectReadOnly::ContainsAnimatedScale(const nsIFrame* aFrame) const
{
if (!IsCurrent()) {
return false;
}
for (const AnimationProperty& prop : mProperties) {
if (prop.mProperty != eCSSProperty_transform) {
continue;
}
StyleAnimationValue 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;
}
gfxSize size = baseStyle.GetScaleValue(aFrame);
if (size != gfxSize(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()) {
gfxSize from = segment.mFromValue.GetScaleValue(aFrame);
if (from != gfxSize(1.0f, 1.0f)) {
return true;
}
}
if (!segment.mToValue.IsNull()) {
gfxSize to = segment.mToValue.GetScaleValue(aFrame);
if (to != gfxSize(1.0f, 1.0f)) {
return true;
}
}
}
}
return false;
}
template
void
KeyframeEffectReadOnly::ComposeStyle<RefPtr<AnimValuesStyleRule>&>(
RefPtr<AnimValuesStyleRule>& aAnimationRule,
const nsCSSPropertyIDSet& aPropertiesToSkip);
template
void
KeyframeEffectReadOnly::ComposeStyle<const RawServoAnimationValueMap&>(
const RawServoAnimationValueMap& aAnimationValues,
const nsCSSPropertyIDSet& aPropertiesToSkip);
} // namespace dom
} // namespace mozilla