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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ash/shelf/hotseat_transition_animator.h"
#include "ash/public/cpp/metrics_util.h"
#include "ash/public/cpp/shelf_config.h"
#include "ash/shelf/drag_handle.h"
#include "ash/shelf/shelf_layout_manager.h"
#include "ash/shelf/shelf_widget.h"
#include "ash/shell.h"
#include "ash/wm/tablet_mode/tablet_mode_controller.h"
#include "base/check.h"
#include "base/functional/bind.h"
#include "base/metrics/histogram_macros.h"
#include "ui/compositor/animation_throughput_reporter.h"
#include "ui/compositor/layer.h"
#include "ui/compositor/layer_animator.h"
#include "ui/compositor/scoped_layer_animation_settings.h"
#include "ui/gfx/animation/tween.h"
#include "ui/gfx/geometry/rect.h"
namespace ash {
namespace {
void ReportSmoothness(HotseatState new_state, int value) {
switch (new_state) {
case HotseatState::kShownClamshell:
case HotseatState::kShownHomeLauncher:
UMA_HISTOGRAM_PERCENTAGE(
"Ash.HotseatTransition.AnimationSmoothness."
"TransitionToShownHotseat",
value);
break;
case HotseatState::kExtended:
UMA_HISTOGRAM_PERCENTAGE(
"Ash.HotseatTransition.AnimationSmoothness."
"TransitionToExtendedHotseat",
value);
break;
case HotseatState::kHidden:
UMA_HISTOGRAM_PERCENTAGE(
"Ash.HotseatTransition.AnimationSmoothness."
"TransitionToHiddenHotseat",
value);
break;
case HotseatState::kNone:
DCHECK(false);
break;
}
}
} // namespace
HotseatTransitionAnimator::HotseatTransitionAnimator(ShelfWidget* shelf_widget)
: shelf_widget_(shelf_widget) {}
HotseatTransitionAnimator::~HotseatTransitionAnimator() {
StopObservingImplicitAnimations();
}
void HotseatTransitionAnimator::OnHotseatStateChanged(HotseatState old_state,
HotseatState new_state) {
DoAnimation(old_state, new_state);
}
void HotseatTransitionAnimator::AddObserver(Observer* observer) {
observers_.AddObserver(observer);
}
void HotseatTransitionAnimator::RemoveObserver(Observer* observer) {
observers_.RemoveObserver(observer);
}
void HotseatTransitionAnimator::OnImplicitAnimationsCompleted() {
std::move(animation_complete_callback_).Run();
if (test_observer_)
test_observer_->OnTransitionTestAnimationEnded();
}
void HotseatTransitionAnimator::OnLayerAnimationAborted(
ui::LayerAnimationSequence* sequence) {
// NOTE: This will be called only once (or zero times) each time for`
// DoAnimation because we only have one LayerAnimationSequence for this
// particular animation. If another is added we will have to modify how this
// is sent out.
for (auto& observer : observers_)
observer.OnHotseatTransitionAnimationAborted();
}
void HotseatTransitionAnimator::SetAnimationsEnabledInSessionState(
bool enabled) {
animations_enabled_for_current_session_state_ = enabled;
ui::Layer* animating_background = shelf_widget_->GetAnimatingBackground();
if (!enabled && animating_background->GetAnimator()->is_animating())
animating_background->GetAnimator()->StopAnimating();
}
void HotseatTransitionAnimator::SetTestObserver(TestObserver* test_observer) {
test_observer_ = test_observer;
}
void HotseatTransitionAnimator::DoAnimation(HotseatState old_state,
HotseatState new_state) {
const bool animating_to_shown_background =
new_state != HotseatState::kShownHomeLauncher;
gfx::Transform transform;
if (animating_to_shown_background)
transform.Translate(0, -ShelfConfig::Get()->in_app_shelf_size());
if (!ShouldDoAnimation(old_state, new_state)) {
shelf_widget_->GetAnimatingBackground()->SetTransform(transform);
return;
}
StopObservingImplicitAnimations();
shelf_widget_->GetAnimatingBackground()->SetColor(
ShelfConfig::Get()->GetMaximizedShelfColor(shelf_widget_));
gfx::Rect drag_handle_bounds(shelf_widget_->GetAnimatingBackground()->size());
drag_handle_bounds.ClampToCenteredSize(ShelfConfig::Get()->DragHandleSize());
shelf_widget_->GetAnimatingDragHandle()->SetBounds(drag_handle_bounds);
for (auto& observer : observers_)
observer.OnHotseatTransitionAnimationWillStart(old_state, new_state);
{
ui::ScopedLayerAnimationSettings shelf_bg_animation_setter(
shelf_widget_->GetAnimatingBackground()->GetAnimator());
shelf_bg_animation_setter.SetTransitionDuration(
ShelfConfig::Get()->hotseat_background_animation_duration());
shelf_bg_animation_setter.SetTweenType(gfx::Tween::EASE_OUT);
shelf_bg_animation_setter.SetPreemptionStrategy(
ui::LayerAnimator::IMMEDIATELY_ANIMATE_TO_NEW_TARGET);
animation_complete_callback_ = base::BindOnce(
&HotseatTransitionAnimator::NotifyHotseatTransitionAnimationEnded,
weak_ptr_factory_.GetWeakPtr(), old_state, new_state);
shelf_bg_animation_setter.AddObserver(this);
ui::AnimationThroughputReporter reporter(
shelf_bg_animation_setter.GetAnimator(),
metrics_util::ForSmoothness(
base::BindRepeating(&ReportSmoothness, new_state)));
shelf_widget_->GetAnimatingBackground()->SetTransform(transform);
}
}
bool HotseatTransitionAnimator::ShouldDoAnimation(HotseatState old_state,
HotseatState new_state) {
if (!animations_enabled_for_current_session_state_)
return false;
// The shelf should be directly hidden without animation if the auto hide
// state is auto hidden.
if (shelf_widget_->shelf_layout_manager()->is_shelf_auto_hidden())
return false;
return (new_state == HotseatState::kShownHomeLauncher ||
old_state == HotseatState::kShownHomeLauncher) &&
!(new_state == HotseatState::kShownClamshell ||
old_state == HotseatState::kShownClamshell) &&
Shell::Get()->tablet_mode_controller()->InTabletMode();
}
void HotseatTransitionAnimator::NotifyHotseatTransitionAnimationEnded(
HotseatState old_state,
HotseatState new_state) {
for (auto& observer : observers_)
observer.OnHotseatTransitionAnimationEnded(old_state, new_state);
}
} // namespace ash
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