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gecko-dev/dom/animation/KeyframeEffectReadOnly.cpp

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/* -*- 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->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::ComposeStyle(
AnimationRule& aStyleRule,
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;
}
bool isServoBackend = mDocument->IsStyledByServo();
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");
// Bug 1333311 - We use two branches for Gecko and Stylo. However, it's
// better to remove the duplicated code.
if (isServoBackend) {
// Servo backend
// Bug 1329878 - Stylo: Implement accumulate and addition on Servo
// AnimationValue.
RawServoAnimationValue* servoFromValue = segment->mFromValue.mServo;
RawServoAnimationValue* servoToValue = segment->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");
continue;
}
if (!aStyleRule.mServo) {
// Allocate the style rule now that we know we have animation data.
aStyleRule.mServo = new ServoAnimationRule();
}
// Special handling for zero-length segments
if (segment->mToKey == segment->mFromKey) {
if (computedTiming.mProgress.Value() < 0) {
aStyleRule.mServo->AddValue(prop.mProperty, servoFromValue);
} else {
aStyleRule.mServo->AddValue(prop.mProperty, servoToValue);
}
continue;
}
double positionInSegment =
(computedTiming.mProgress.Value() - segment->mFromKey) /
(segment->mToKey - segment->mFromKey);
double valuePosition =
ComputedTimingFunction::GetPortion(segment->mTimingFunction,
positionInSegment,
computedTiming.mBeforeFlag);
MOZ_ASSERT(IsFinite(valuePosition), "Position value should be finite");
RefPtr<RawServoAnimationValue> interpolated =
Servo_AnimationValues_Interpolate(servoFromValue,
servoToValue,
valuePosition).Consume();
if (interpolated) {
aStyleRule.mServo->AddValue(prop.mProperty, interpolated);
} else if (valuePosition < 0.5) {
aStyleRule.mServo->AddValue(prop.mProperty, servoFromValue);
} else {
aStyleRule.mServo->AddValue(prop.mProperty, servoToValue);
}
} else {
// Gecko backend
if (!aStyleRule.mGecko) {
// Allocate the style rule now that we know we have animation data.
aStyleRule.mGecko = new AnimValuesStyleRule();
}
StyleAnimationValue fromValue =
CompositeValue(prop.mProperty, aStyleRule.mGecko,
segment->mFromValue.mGecko,
segment->mFromComposite);
StyleAnimationValue toValue =
CompositeValue(prop.mProperty, aStyleRule.mGecko,
segment->mToValue.mGecko,
segment->mToComposite);
if (fromValue.IsNull() || toValue.IsNull()) {
continue;
}
// Iteration composition for accumulate
if (mEffectOptions.mIterationComposite ==
IterationCompositeOperation::Accumulate &&
computedTiming.mCurrentIteration > 0) {
const AnimationPropertySegment& lastSegment =
prop.mSegments.LastElement();
// FIXME: Bug 1293492: Add a utility function to calculate both of
// below StyleAnimationValues.
StyleAnimationValue lastValue = lastSegment.mToValue.mGecko.IsNull()
? GetUnderlyingStyle(prop.mProperty, aStyleRule.mGecko)
: lastSegment.mToValue.mGecko;
fromValue =
StyleAnimationValue::Accumulate(prop.mProperty,
lastValue,
Move(fromValue),
computedTiming.mCurrentIteration);
toValue =
StyleAnimationValue::Accumulate(prop.mProperty,
lastValue,
Move(toValue),
computedTiming.mCurrentIteration);
}
// Special handling for zero-length segments
if (segment->mToKey == segment->mFromKey) {
if (computedTiming.mProgress.Value() < 0) {
aStyleRule.mGecko->AddValue(prop.mProperty, Move(fromValue));
} else {
aStyleRule.mGecko->AddValue(prop.mProperty, Move(toValue));
}
continue;
}
double positionInSegment =
(computedTiming.mProgress.Value() - segment->mFromKey) /
(segment->mToKey - segment->mFromKey);
double valuePosition =
ComputedTimingFunction::GetPortion(segment->mTimingFunction,
positionInSegment,
computedTiming.mBeforeFlag);
MOZ_ASSERT(IsFinite(valuePosition), "Position value should be finite");
StyleAnimationValue val;
if (StyleAnimationValue::Interpolate(prop.mProperty,
fromValue,
toValue,
valuePosition, val)) {
aStyleRule.mGecko->AddValue(prop.mProperty, Move(val));
} else if (valuePosition < 0.5) {
aStyleRule.mGecko->AddValue(prop.mProperty, Move(fromValue));
} else {
aStyleRule.mGecko->AddValue(prop.mProperty, Move(toValue));
}
}
}
}
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();
}
nsPresContext*
KeyframeEffectReadOnly::GetPresContext() const
{
nsIPresShell* shell = GetPresShell();
if (!shell) {
return nullptr;
}
return shell->GetPresContext();
}
/* 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;
}
} // namespace dom
} // namespace mozilla
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