tor-browser

The Tor Browser
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EffectSet.cpp (4072B)

      1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
      3 /* This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this
      5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 #include "EffectSet.h"
      8 
      9 #include "ElementAnimationData.h"
     10 #include "mozilla/LayerAnimationInfo.h"
     11 #include "mozilla/PseudoStyleType.h"  // For PseudoStyleRequest
     12 #include "mozilla/RestyleManager.h"
     13 #include "mozilla/dom/Element.h"         // For Element
     14 #include "nsCycleCollectionNoteChild.h"  // For CycleCollectionNoteChild
     15 #include "nsLayoutUtils.h"
     16 #include "nsPresContext.h"
     17 
     18 namespace mozilla {
     19 
     20 void EffectSet::Traverse(nsCycleCollectionTraversalCallback& aCallback) {
     21  for (const auto& key : mEffects) {
     22    CycleCollectionNoteChild(aCallback, key, "EffectSet::mEffects[]",
     23                             aCallback.Flags());
     24  }
     25 }
     26 
     27 /* static */
     28 EffectSet* EffectSet::Get(const dom::Element* aElement,
     29                          const PseudoStyleRequest& aPseudoRequest) {
     30  if (auto* data = aElement->GetAnimationData()) {
     31    return data->GetEffectSetFor(aPseudoRequest);
     32  }
     33  return nullptr;
     34 }
     35 
     36 /* static */
     37 EffectSet* EffectSet::GetOrCreate(dom::Element* aElement,
     38                                  const PseudoStyleRequest& aPseudoRequest) {
     39  return &aElement->EnsureAnimationData().EnsureEffectSetFor(aPseudoRequest);
     40 }
     41 
     42 /* static */
     43 EffectSet* EffectSet::GetForFrame(const nsIFrame* aFrame,
     44                                  const nsCSSPropertyIDSet& aProperties) {
     45  MOZ_ASSERT(aFrame);
     46 
     47  // Transform animations are run on the primary frame (but stored on the
     48  // content associated with the style frame).
     49  const nsIFrame* frameToQuery = nullptr;
     50  if (aProperties.IsSubsetOf(nsCSSPropertyIDSet::TransformLikeProperties())) {
     51    // Make sure to return nullptr if we're looking for transform animations on
     52    // the inner table frame.
     53    if (!aFrame->SupportsCSSTransforms()) {
     54      return nullptr;
     55    }
     56    frameToQuery = nsLayoutUtils::GetStyleFrame(aFrame);
     57  } else {
     58    MOZ_ASSERT(
     59        !aProperties.Intersects(nsCSSPropertyIDSet::TransformLikeProperties()),
     60        "We should have only transform properties or no transform properties");
     61    // We don't need to explicitly return nullptr when |aFrame| is NOT the style
     62    // frame since there will be no effect set in that case.
     63    frameToQuery = aFrame;
     64  }
     65 
     66  Maybe<NonOwningAnimationTarget> target =
     67      EffectCompositor::GetAnimationElementAndPseudoForFrame(frameToQuery);
     68  return target ? Get(*target) : nullptr;
     69 }
     70 
     71 /* static */
     72 EffectSet* EffectSet::GetForFrame(const nsIFrame* aFrame,
     73                                  DisplayItemType aDisplayItemType) {
     74  return EffectSet::GetForFrame(
     75      aFrame, LayerAnimationInfo::GetCSSPropertiesFor(aDisplayItemType));
     76 }
     77 
     78 /* static */
     79 EffectSet* EffectSet::GetForStyleFrame(const nsIFrame* aStyleFrame) {
     80  Maybe<NonOwningAnimationTarget> target =
     81      EffectCompositor::GetAnimationElementAndPseudoForFrame(aStyleFrame);
     82  return target ? Get(*target) : nullptr;
     83 }
     84 
     85 /* static */
     86 EffectSet* EffectSet::GetForEffect(const dom::KeyframeEffect* aEffect) {
     87  NonOwningAnimationTarget target = aEffect->GetAnimationTarget();
     88  return target ? Get(target) : nullptr;
     89 }
     90 
     91 /* static */
     92 void EffectSet::DestroyEffectSet(dom::Element* aElement,
     93                                 const PseudoStyleRequest& aPseudoRequest) {
     94  if (auto* data = aElement->GetAnimationData()) {
     95    data->ClearEffectSetFor(aPseudoRequest);
     96  }
     97 }
     98 
     99 void EffectSet::UpdateAnimationGeneration(nsPresContext* aPresContext) {
    100  mAnimationGeneration =
    101      aPresContext->RestyleManager()->GetAnimationGeneration();
    102 }
    103 
    104 void EffectSet::AddEffect(dom::KeyframeEffect& aEffect) {
    105  if (!mEffects.EnsureInserted(&aEffect)) {
    106    return;
    107  }
    108 
    109  MarkCascadeNeedsUpdate();
    110 }
    111 
    112 void EffectSet::RemoveEffect(dom::KeyframeEffect& aEffect) {
    113  if (!mEffects.EnsureRemoved(&aEffect)) {
    114    return;
    115  }
    116 
    117  MarkCascadeNeedsUpdate();
    118 }
    119 
    120 }  // namespace mozilla