void CSSAnimations::calculateTransitionActiveInterpolations(CSSAnimationUpdate* update, const Element* animatingElement, double timelineCurrentTime)
{
ActiveAnimations* activeAnimations = animatingElement ? animatingElement->activeAnimations() : nullptr;
AnimationStack* animationStack = activeAnimations ? &activeAnimations->defaultStack() : nullptr;
WillBeHeapHashMap<CSSPropertyID, RefPtrWillBeMember<Interpolation>> activeInterpolationsForTransitions;
if (update->newTransitions().isEmpty() && update->cancelledTransitions().isEmpty()) {
activeInterpolationsForTransitions = AnimationStack::activeInterpolations(animationStack, 0, 0, Animation::TransitionPriority, timelineCurrentTime);
} else {
WillBeHeapVector<RawPtrWillBeMember<InertAnimation>> newTransitions;
for (const auto& entry : update->newTransitions())
newTransitions.append(entry.value.animation.get());
WillBeHeapHashSet<RawPtrWillBeMember<const AnimationPlayer>> cancelledAnimationPlayers;
if (!update->cancelledTransitions().isEmpty()) {
ASSERT(activeAnimations);
const TransitionMap& transitionMap = activeAnimations->cssAnimations().m_transitions;
for (CSSPropertyID id : update->cancelledTransitions()) {
ASSERT(transitionMap.contains(id));
cancelledAnimationPlayers.add(transitionMap.get(id).player.get());
}
}
activeInterpolationsForTransitions = AnimationStack::activeInterpolations(animationStack, &newTransitions, &cancelledAnimationPlayers, Animation::TransitionPriority, timelineCurrentTime);
}
// Properties being animated by animations don't get values from transitions applied.
if (!update->activeInterpolationsForAnimations().isEmpty() && !activeInterpolationsForTransitions.isEmpty()) {
for (const auto& entry : update->activeInterpolationsForAnimations())
activeInterpolationsForTransitions.remove(entry.key);
}
update->adoptActiveInterpolationsForTransitions(activeInterpolationsForTransitions);
}
