gecko-dev/dom/animation/PendingAnimationTracker.cpp

121 строка
3.5 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "PendingAnimationTracker.h"
#include "mozilla/dom/DocumentTimeline.h"
#include "nsIFrame.h"
#include "nsIPresShell.h"
using namespace mozilla;
namespace mozilla {
NS_IMPL_CYCLE_COLLECTION(PendingAnimationTracker,
mPlayPendingSet,
mPausePendingSet,
mDocument)
NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(PendingAnimationTracker, AddRef)
NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(PendingAnimationTracker, Release)
void
PendingAnimationTracker::AddPending(dom::Animation& aAnimation,
AnimationSet& aSet)
{
aSet.PutEntry(&aAnimation);
// Schedule a paint. Otherwise animations that don't trigger a paint by
// themselves (e.g. CSS animations with an empty keyframes rule) won't
// start until something else paints.
EnsurePaintIsScheduled();
}
void
PendingAnimationTracker::RemovePending(dom::Animation& aAnimation,
AnimationSet& aSet)
{
aSet.RemoveEntry(&aAnimation);
}
bool
PendingAnimationTracker::IsWaiting(const dom::Animation& aAnimation,
const AnimationSet& aSet) const
{
return aSet.Contains(const_cast<dom::Animation*>(&aAnimation));
}
PLDHashOperator
TriggerAnimationAtTime(nsRefPtrHashKey<dom::Animation>* aKey,
void* aReadyTime)
{
dom::Animation* animation = aKey->GetKey();
dom::DocumentTimeline* timeline = animation->Timeline();
// When the timeline's refresh driver is under test control, its values
// have no correspondance to wallclock times so we shouldn't try to convert
// aReadyTime (which is a wallclock time) to a timeline value. Instead, the
// animation will be started/paused when the refresh driver is next
// advanced since this will trigger a call to TriggerPendingAnimationsNow.
if (timeline->IsUnderTestControl()) {
return PL_DHASH_NEXT;
}
Nullable<TimeDuration> readyTime =
timeline->ToTimelineTime(*static_cast<const TimeStamp*>(aReadyTime));
animation->TriggerOnNextTick(readyTime);
return PL_DHASH_REMOVE;
}
void
PendingAnimationTracker::TriggerPendingAnimationsOnNextTick(const TimeStamp&
aReadyTime)
{
mPlayPendingSet.EnumerateEntries(TriggerAnimationAtTime,
const_cast<TimeStamp*>(&aReadyTime));
mPausePendingSet.EnumerateEntries(TriggerAnimationAtTime,
const_cast<TimeStamp*>(&aReadyTime));
}
PLDHashOperator
TriggerAnimationNow(nsRefPtrHashKey<dom::Animation>* aKey, void*)
{
aKey->GetKey()->TriggerNow();
return PL_DHASH_NEXT;
}
void
PendingAnimationTracker::TriggerPendingAnimationsNow()
{
mPlayPendingSet.EnumerateEntries(TriggerAnimationNow, nullptr);
mPlayPendingSet.Clear();
mPausePendingSet.EnumerateEntries(TriggerAnimationNow, nullptr);
mPausePendingSet.Clear();
}
void
PendingAnimationTracker::EnsurePaintIsScheduled()
{
if (!mDocument) {
return;
}
nsIPresShell* presShell = mDocument->GetShell();
if (!presShell) {
return;
}
nsIFrame* rootFrame = presShell->GetRootFrame();
if (!rootFrame) {
return;
}
rootFrame->SchedulePaint();
}
} // namespace mozilla