bee79af4be
The basic part of the infrastructure of scroll-linked animations. This is designed based on scroll-linked animation generated by CSS. We will implement the timing computation and hook the ScrollTimeline to the CSS animations in the following patches. All the tests are in the patch that hooks ScrollTimeline to CSS Animation. Differential Revision: https://phabricator.services.mozilla.com/D129100
90 lines
3.0 KiB
C++
90 lines
3.0 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "AnimationTimeline.h"
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#include "mozilla/AnimationComparator.h"
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#include "mozilla/dom/Animation.h"
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namespace mozilla::dom {
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AnimationTimeline::~AnimationTimeline() { mAnimationOrder.clear(); }
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NS_IMPL_CYCLE_COLLECTION_CLASS(AnimationTimeline)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(AnimationTimeline)
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tmp->mAnimationOrder.clear();
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mWindow, mAnimations)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(AnimationTimeline)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mWindow, mAnimations)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCACHE(AnimationTimeline)
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NS_IMPL_CYCLE_COLLECTING_ADDREF(AnimationTimeline)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(AnimationTimeline)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(AnimationTimeline)
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NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_END
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bool AnimationTimeline::Tick() {
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bool needsTicks = false;
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nsTArray<Animation*> animationsToRemove;
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for (Animation* animation = mAnimationOrder.getFirst(); animation;
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animation =
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static_cast<LinkedListElement<Animation>*>(animation)->getNext()) {
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// Skip any animations that are longer need associated with this timeline.
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if (animation->GetTimeline() != this) {
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// If animation has some other timeline, it better not be also in the
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// animation list of this timeline object!
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MOZ_ASSERT(!animation->GetTimeline());
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animationsToRemove.AppendElement(animation);
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continue;
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}
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needsTicks |= animation->NeedsTicks();
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// Even if |animation| doesn't need future ticks, we should still
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// Tick it this time around since it might just need a one-off tick in
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// order to dispatch events.
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animation->Tick();
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if (!animation->NeedsTicks()) {
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animationsToRemove.AppendElement(animation);
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}
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}
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for (Animation* animation : animationsToRemove) {
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RemoveAnimation(animation);
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}
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return needsTicks;
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}
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void AnimationTimeline::NotifyAnimationUpdated(Animation& aAnimation) {
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if (mAnimations.EnsureInserted(&aAnimation)) {
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if (aAnimation.GetTimeline() && aAnimation.GetTimeline() != this) {
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aAnimation.GetTimeline()->RemoveAnimation(&aAnimation);
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}
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mAnimationOrder.insertBack(&aAnimation);
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}
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}
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void AnimationTimeline::RemoveAnimation(Animation* aAnimation) {
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MOZ_ASSERT(!aAnimation->GetTimeline() || aAnimation->GetTimeline() == this);
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if (static_cast<LinkedListElement<Animation>*>(aAnimation)->isInList()) {
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static_cast<LinkedListElement<Animation>*>(aAnimation)->remove();
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}
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mAnimations.Remove(aAnimation);
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}
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} // namespace mozilla::dom
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