Ejemplo n.º 1
0
/* static */ void
EffectCompositor::MaybeUpdateCascadeResults(Element* aElement,
                                            nsCSSPseudoElements::Type
                                              aPseudoType,
                                            nsStyleContext* aStyleContext)
{
  EffectSet* effects = EffectSet::GetEffectSet(aElement, aPseudoType);
  if (!effects || !effects->CascadeNeedsUpdate()) {
    return;
  }

  UpdateCascadeResults(*effects, aElement, aPseudoType, aStyleContext);

  MOZ_ASSERT(!effects->CascadeNeedsUpdate(), "Failed to update cascade state");
}
Ejemplo n.º 2
0
/* static */ void
EffectCompositor::ComposeAnimationRule(dom::Element* aElement,
                                       nsCSSPseudoElements::Type aPseudoType,
                                       CascadeLevel aCascadeLevel,
                                       bool& aStyleChanging)
{
  EffectSet* effects = EffectSet::GetEffectSet(aElement, aPseudoType);
  if (!effects) {
    return;
  }

  // The caller is responsible for calling MaybeUpdateCascadeResults first.
  MOZ_ASSERT(!effects->CascadeNeedsUpdate(),
             "Animation cascade out of date when composing animation rule");

  // Get a list of effects for the current level sorted by composite order.
  nsTArray<KeyframeEffectReadOnly*> sortedEffectList;
  for (KeyframeEffectReadOnly* effect : *effects) {
    MOZ_ASSERT(effect->GetAnimation());
    if (effect->GetAnimation()->CascadeLevel() == aCascadeLevel) {
      sortedEffectList.AppendElement(effect);
    }
  }
  sortedEffectList.Sort(EffectCompositeOrderComparator());

  RefPtr<AnimValuesStyleRule>& animationRule =
    effects->AnimationRule(aCascadeLevel);
  animationRule = nullptr;

  // We'll set aStyleChanging to true below if necessary.
  aStyleChanging = false;

  // If multiple animations specify behavior for the same property the
  // animation with the *highest* composite order wins.
  // As a result, we iterate from last animation to first and, if a
  // property has already been set, we don't change it.
  nsCSSPropertySet properties;

  for (KeyframeEffectReadOnly* effect : Reversed(sortedEffectList)) {
    effect->GetAnimation()->ComposeStyle(animationRule, properties,
                                         aStyleChanging);
  }
}