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a0a9a06827
This is in anticipation of adding Animation::SetTimeline(). Once we set the timeline out of band, there's a chance that getting it could return null so this patch makes the WebIDL and method name reflect that.
128 lines
3.8 KiB
C++
128 lines
3.8 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 "PendingAnimationTracker.h"
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#include "mozilla/dom/AnimationTimeline.h"
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#include "nsIFrame.h"
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#include "nsIPresShell.h"
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using namespace mozilla;
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namespace mozilla {
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NS_IMPL_CYCLE_COLLECTION(PendingAnimationTracker,
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mPlayPendingSet,
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mPausePendingSet,
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mDocument)
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NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(PendingAnimationTracker, AddRef)
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NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(PendingAnimationTracker, Release)
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void
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PendingAnimationTracker::AddPending(dom::Animation& aAnimation,
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AnimationSet& aSet)
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{
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aSet.PutEntry(&aAnimation);
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// Schedule a paint. Otherwise animations that don't trigger a paint by
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// themselves (e.g. CSS animations with an empty keyframes rule) won't
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// start until something else paints.
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EnsurePaintIsScheduled();
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}
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void
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PendingAnimationTracker::RemovePending(dom::Animation& aAnimation,
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AnimationSet& aSet)
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{
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aSet.RemoveEntry(&aAnimation);
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}
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bool
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PendingAnimationTracker::IsWaiting(const dom::Animation& aAnimation,
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const AnimationSet& aSet) const
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{
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return aSet.Contains(const_cast<dom::Animation*>(&aAnimation));
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}
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PLDHashOperator
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TriggerAnimationAtTime(nsRefPtrHashKey<dom::Animation>* aKey,
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void* aReadyTime)
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{
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dom::Animation* animation = aKey->GetKey();
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dom::AnimationTimeline* timeline = animation->GetTimeline();
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// If the animation does not have a timeline, just drop it from the map.
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// The animation will detect that it is not being tracked and will trigger
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// itself on the next tick where it has a timeline.
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if (!timeline) {
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return PL_DHASH_REMOVE;
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}
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// When the timeline's refresh driver is under test control, its values
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// have no correspondance to wallclock times so we shouldn't try to convert
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// aReadyTime (which is a wallclock time) to a timeline value. Instead, the
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// animation will be started/paused when the refresh driver is next
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// advanced since this will trigger a call to TriggerPendingAnimationsNow.
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if (!timeline->TracksWallclockTime()) {
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return PL_DHASH_NEXT;
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}
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Nullable<TimeDuration> readyTime =
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timeline->ToTimelineTime(*static_cast<const TimeStamp*>(aReadyTime));
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animation->TriggerOnNextTick(readyTime);
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return PL_DHASH_REMOVE;
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}
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void
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PendingAnimationTracker::TriggerPendingAnimationsOnNextTick(const TimeStamp&
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aReadyTime)
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{
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mPlayPendingSet.EnumerateEntries(TriggerAnimationAtTime,
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const_cast<TimeStamp*>(&aReadyTime));
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mPausePendingSet.EnumerateEntries(TriggerAnimationAtTime,
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const_cast<TimeStamp*>(&aReadyTime));
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}
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PLDHashOperator
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TriggerAnimationNow(nsRefPtrHashKey<dom::Animation>* aKey, void*)
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{
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aKey->GetKey()->TriggerNow();
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return PL_DHASH_NEXT;
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}
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void
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PendingAnimationTracker::TriggerPendingAnimationsNow()
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{
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mPlayPendingSet.EnumerateEntries(TriggerAnimationNow, nullptr);
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mPlayPendingSet.Clear();
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mPausePendingSet.EnumerateEntries(TriggerAnimationNow, nullptr);
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mPausePendingSet.Clear();
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}
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void
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PendingAnimationTracker::EnsurePaintIsScheduled()
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{
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if (!mDocument) {
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return;
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}
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nsIPresShell* presShell = mDocument->GetShell();
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if (!presShell) {
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return;
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}
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nsIFrame* rootFrame = presShell->GetRootFrame();
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if (!rootFrame) {
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return;
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}
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rootFrame->SchedulePaint();
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}
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} // namespace mozilla
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