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Bug 847287 patch 5 - Add method to update animations on layer. r=birtles

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This does somewhat less work than PostRestyleForAnimation, although I
believe PostRestyleForAnimation would be a sufficient alternative.

This is used in patch 6.
This commit is contained in:
L. David Baron 2015-03-31 15:05:54 -07:00
parent ee1b9da9da
commit 31e337af48
2 changed files with 48 additions and 0 deletions
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39
layout/style/AnimationCommon.cpp
View File

@ -404,6 +404,21 @@ CommonAnimationManager::GetAnimationRule(mozilla::dom::Element* aElement,
nsDisplayItem::TYPE_OPACITY,
nsChangeHint_UpdateOpacityLayer } };
/* static */ const CommonAnimationManager::LayerAnimationRecord*
CommonAnimationManager::LayerAnimationRecordFor(nsCSSProperty aProperty)
{
MOZ_ASSERT(nsCSSProps::PropHasFlags(aProperty,
CSS_PROPERTY_CAN_ANIMATE_ON_COMPOSITOR),
"unexpected property");
const auto& info = sLayerAnimationInfo;
for (size_t i = 0; i < ArrayLength(info); ++i) {
if (aProperty == info[i].mProperty) {
return &info[i];
}
}
return nullptr;
}
#ifdef DEBUG
/* static */ void
CommonAnimationManager::Initialize()
@ -641,6 +656,30 @@ AnimationPlayerCollection::CanPerformOnCompositorThread(
return true;
}
void
AnimationPlayerCollection::PostUpdateLayerAnimations()
{
nsCSSPropertySet propsHandled;
for (size_t playerIdx = mPlayers.Length(); playerIdx-- != 0; ) {
const auto& properties = mPlayers[playerIdx]->GetSource()->Properties();
for (size_t propIdx = properties.Length(); propIdx-- != 0; ) {
nsCSSProperty prop = properties[propIdx].mProperty;
if (nsCSSProps::PropHasFlags(prop,
CSS_PROPERTY_CAN_ANIMATE_ON_COMPOSITOR) &&
!propsHandled.HasProperty(prop)) {
propsHandled.AddProperty(prop);
nsChangeHint changeHint = css::CommonAnimationManager::
LayerAnimationRecordFor(prop)->mChangeHint;
dom::Element* element = GetElementToRestyle();
if (element) {
mManager->mPresContext->RestyleManager()->
PostRestyleEvent(element, nsRestyleHint(0), changeHint);
}
}
}
}
}
bool
AnimationPlayerCollection::HasAnimationOfProperty(
nsCSSProperty aProperty) const

9
layout/style/AnimationCommon.h
View File

@ -128,6 +128,12 @@ protected:
public:
static const LayerAnimationRecord sLayerAnimationInfo[kLayerRecords];
// Will return non-null for any property with the
// CSS_PROPERTY_CAN_ANIMATE_ON_COMPOSITOR flag; should only be called
// on such properties.
static const LayerAnimationRecord*
LayerAnimationRecordFor(nsCSSProperty aProperty);
protected:
virtual ~CommonAnimationManager();
@ -295,6 +301,9 @@ struct AnimationPlayerCollection : public PRCList
// (This is useful for determining whether throttle the animation
// (suppress main-thread style updates).)
bool CanPerformOnCompositorThread(CanAnimateFlags aFlags) const;
void PostUpdateLayerAnimations();
bool HasAnimationOfProperty(nsCSSProperty aProperty) const;
bool IsForElement() const { // rather than for a pseudo-element