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- // Copyright 2021 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #include "ash/utility/occlusion_tracker_pauser.h"
- #include "ash/shell.h"
- #include "base/bind.h"
- #include "ui/aura/window_tree_host.h"
- #include "ui/compositor/compositor.h"
- namespace ash {
- OcclusionTrackerPauser::OcclusionTrackerPauser() = default;
- OcclusionTrackerPauser::~OcclusionTrackerPauser() {
- DCHECK(!observations_.IsObservingAnySource());
- }
- void OcclusionTrackerPauser::PauseUntilAnimationsEnd(base::TimeDelta timeout) {
- for (auto* root : Shell::GetAllRootWindows())
- Pause(root->GetHost()->compositor());
- if (!scoped_pause_) {
- scoped_pause_ =
- std::make_unique<aura::WindowOcclusionTracker::ScopedPause>();
- }
- timer_.Stop();
- if (!timeout.is_zero()) {
- timer_.Start(FROM_HERE, timeout,
- base::BindOnce(&OcclusionTrackerPauser::Timeout,
- base::Unretained(this)));
- }
- }
- void OcclusionTrackerPauser::OnLastAnimationEnded(ui::Compositor* compositor) {
- OnFinish(compositor);
- }
- void OcclusionTrackerPauser::OnCompositingShuttingDown(
- ui::Compositor* compositor) {
- OnFinish(compositor);
- }
- void OcclusionTrackerPauser::Pause(ui::Compositor* compositor) {
- if (!observations_.IsObservingSource(compositor))
- observations_.AddObservation(compositor);
- }
- void OcclusionTrackerPauser::OnFinish(ui::Compositor* compositor) {
- if (!observations_.IsObservingSource(compositor))
- return;
- observations_.RemoveObservation(compositor);
- if (observations_.IsObservingAnySource())
- return;
- DCHECK(scoped_pause_);
- timer_.Stop();
- scoped_pause_.reset();
- }
- void OcclusionTrackerPauser::Timeout() {
- DCHECK(scoped_pause_);
- LOG(WARNING) << "Unpausing because animations didn't start and end in time";
- scoped_pause_.reset();
- observations_.RemoveAllObservations();
- }
- } // namespace ash
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