AnimationCollection*
CommonAnimationManager::GetAnimationsForCompositor(const nsIFrame* aFrame,
nsCSSProperty aProperty)
{
AnimationCollection* collection = GetAnimationCollection(aFrame);
if (!collection ||
!collection->HasCurrentAnimationOfProperty(aProperty) ||
!collection->CanPerformOnCompositorThread(
AnimationCollection::CanAnimate_AllowPartial)) {
return nullptr;
}
// This animation can be done on the compositor.
return collection;
}
AnimationCollection*
CommonAnimationManager::GetAnimationsForCompositor(nsIContent* aContent,
nsIAtom* aElementProperty,
nsCSSProperty aProperty)
{
if (!aContent->MayHaveAnimations())
return nullptr;
AnimationCollection* collection =
static_cast<AnimationCollection*>(aContent->GetProperty(aElementProperty));
if (!collection ||
!collection->HasAnimationOfProperty(aProperty) ||
!collection->CanPerformOnCompositorThread(
AnimationCollection::CanAnimate_AllowPartial)) {
return nullptr;
}
// This animation can be done on the compositor.
return collection;
}
void
nsAnimationManager::FlushAnimations(FlushFlags aFlags)
{
TimeStamp now = mPresContext->RefreshDriver()->MostRecentRefresh();
bool didThrottle = false;
for (PRCList *l = PR_LIST_HEAD(&mElementCollections);
l != &mElementCollections;
l = PR_NEXT_LINK(l)) {
AnimationCollection* collection = static_cast<AnimationCollection*>(l);
nsAutoAnimationMutationBatch mb(collection->mElement);
collection->Tick();
bool canThrottleTick = aFlags == Can_Throttle &&
collection->CanPerformOnCompositorThread(
AnimationCollection::CanAnimateFlags(0)) &&
collection->CanThrottleAnimation(now);
nsRefPtr<css::AnimValuesStyleRule> oldStyleRule = collection->mStyleRule;
UpdateStyleAndEvents(collection, now, canThrottleTick
? EnsureStyleRule_IsThrottled
: EnsureStyleRule_IsNotThrottled);
if (oldStyleRule != collection->mStyleRule) {
collection->PostRestyleForAnimation(mPresContext);
} else {
didThrottle = true;
}
}
if (didThrottle) {
mPresContext->Document()->SetNeedStyleFlush();
}
MaybeStartOrStopObservingRefreshDriver();
DispatchEvents(); // may destroy us
}