bool
KeyframeEffectReadOnly::ShouldBlockAsyncTransformAnimations(
const nsIFrame* aFrame,
AnimationPerformanceWarning::Type& aPerformanceWarning) const
{
// We currently only expect this method to be called for effects whose
// animations are eligible for the compositor since, Animations that are
// paused, zero-duration, finished etc. should not block other animations from
// running on the compositor.
MOZ_ASSERT(mAnimation && mAnimation->IsPlayableOnCompositor());
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;
}
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;
}