bool CompositorAnimations::isCandidateForAnimationOnCompositor(const Timing& timing, const Element& targetElement, const AnimationPlayer* playerToAdd, const AnimationEffect& effect, double playerPlaybackRate)
{
const KeyframeEffectModelBase& keyframeEffect = toKeyframeEffectModelBase(effect);
PropertySet properties = keyframeEffect.properties();
if (properties.isEmpty())
return false;
for (const auto& property : properties) {
const PropertySpecificKeyframeVector& keyframes = keyframeEffect.getPropertySpecificKeyframes(property);
ASSERT(keyframes.size() >= 2);
for (const auto& keyframe : keyframes) {
// FIXME: Determine candidacy based on the CSSValue instead of a snapshot AnimatableValue.
bool isNeutralKeyframe = keyframe->isStringPropertySpecificKeyframe() && !toStringPropertySpecificKeyframe(keyframe.get())->value() && keyframe->composite() == AnimationEffect::CompositeAdd;
if ((keyframe->composite() != AnimationEffect::CompositeReplace && !isNeutralKeyframe) || !keyframe->getAnimatableValue())
return false;
switch (property) {
case CSSPropertyOpacity:
break;
case CSSPropertyTransform:
if (toAnimatableTransform(keyframe->getAnimatableValue().get())->transformOperations().dependsOnBoxSize())
return false;
break;
case CSSPropertyWebkitFilter: {
const FilterOperations& operations = toAnimatableFilterOperations(keyframe->getAnimatableValue().get())->operations();
if (operations.hasFilterThatMovesPixels())
return false;
break;
}
default:
// any other types are not allowed to run on compositor.
return false;
}
}
}
if (playerToAdd && hasIncompatibleAnimations(targetElement, *playerToAdd, effect))
return false;
CompositorAnimationsImpl::CompositorTiming out;
if (!CompositorAnimationsImpl::convertTimingForCompositor(timing, 0, out, playerPlaybackRate))
return false;
return true;
}
bool CompositorAnimations::isCandidateForAnimationOnCompositor(const Timing& timing, const Element& targetElement, const Animation* animationToAdd, const EffectModel& effect, double animationPlaybackRate)
{
const KeyframeEffectModelBase& keyframeEffect = toKeyframeEffectModelBase(effect);
PropertyHandleSet properties = keyframeEffect.properties();
if (properties.isEmpty())
return false;
unsigned transformPropertyCount = 0;
for (const auto& property : properties) {
if (!property.isCSSProperty())
return false;
if (isTransformRelatedCSSProperty(property)) {
if (targetElement.layoutObject() && targetElement.layoutObject()->isInline()) {
return false;
}
transformPropertyCount++;
}
const PropertySpecificKeyframeVector& keyframes = keyframeEffect.getPropertySpecificKeyframes(property);
ASSERT(keyframes.size() >= 2);
for (const auto& keyframe : keyframes) {
// FIXME: Determine candidacy based on the CSSValue instead of a snapshot AnimatableValue.
bool isNeutralKeyframe = keyframe->isCSSPropertySpecificKeyframe() && !toCSSPropertySpecificKeyframe(keyframe.get())->value() && keyframe->composite() == EffectModel::CompositeAdd;
if ((keyframe->composite() != EffectModel::CompositeReplace && !isNeutralKeyframe) || !keyframe->getAnimatableValue())
return false;
switch (property.cssProperty()) {
case CSSPropertyOpacity:
break;
case CSSPropertyRotate:
case CSSPropertyScale:
case CSSPropertyTranslate:
case CSSPropertyTransform:
if (toAnimatableTransform(keyframe->getAnimatableValue().get())->transformOperations().dependsOnBoxSize())
return false;
break;
case CSSPropertyWebkitFilter:
case CSSPropertyBackdropFilter: {
const FilterOperations& operations = toAnimatableFilterOperations(keyframe->getAnimatableValue().get())->operations();
if (operations.hasFilterThatMovesPixels())
return false;
break;
}
default:
// any other types are not allowed to run on compositor.
return false;
}
}
}
// TODO: Support multiple transform property animations on the compositor
if (transformPropertyCount > 1)
return false;
if (animationToAdd && hasIncompatibleAnimations(targetElement, *animationToAdd, effect))
return false;
CompositorAnimationsImpl::CompositorTiming out;
if (!CompositorAnimationsImpl::convertTimingForCompositor(timing, 0, out, animationPlaybackRate))
return false;
return true;
}
