1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "ash/desktop_background/desktop_background_widget_controller.h"
6
7 #include "ash/ash_export.h"
8 #include "ash/desktop_background/user_wallpaper_delegate.h"
9 #include "ash/root_window_controller.h"
10 #include "ash/shell.h"
11 #include "ui/aura/window_event_dispatcher.h"
12 #include "ui/compositor/layer_animation_observer.h"
13 #include "ui/compositor/scoped_layer_animation_settings.h"
14 #include "ui/views/widget/widget.h"
15 #include "ui/views/widget/widget_observer.h"
16
17 namespace ash {
18 namespace {
19
20 class ShowWallpaperAnimationObserver : public ui::ImplicitAnimationObserver,
21 public views::WidgetObserver {
22 public:
ShowWallpaperAnimationObserver(RootWindowController * root_window_controller,views::Widget * desktop_widget,bool is_initial_animation)23 ShowWallpaperAnimationObserver(RootWindowController* root_window_controller,
24 views::Widget* desktop_widget,
25 bool is_initial_animation)
26 : root_window_controller_(root_window_controller),
27 desktop_widget_(desktop_widget),
28 is_initial_animation_(is_initial_animation) {
29 DCHECK(desktop_widget_);
30 desktop_widget_->AddObserver(this);
31 }
32
~ShowWallpaperAnimationObserver()33 virtual ~ShowWallpaperAnimationObserver() {
34 StopObservingImplicitAnimations();
35 if (desktop_widget_)
36 desktop_widget_->RemoveObserver(this);
37 }
38
39 private:
40 // Overridden from ui::ImplicitAnimationObserver:
OnImplicitAnimationsScheduled()41 virtual void OnImplicitAnimationsScheduled() OVERRIDE {
42 if (is_initial_animation_) {
43 root_window_controller_->
44 HandleInitialDesktopBackgroundAnimationStarted();
45 }
46 }
47
OnImplicitAnimationsCompleted()48 virtual void OnImplicitAnimationsCompleted() OVERRIDE {
49 root_window_controller_->OnWallpaperAnimationFinished(desktop_widget_);
50 delete this;
51 }
52
53 // Overridden from views::WidgetObserver.
OnWidgetDestroying(views::Widget * widget)54 virtual void OnWidgetDestroying(views::Widget* widget) OVERRIDE {
55 delete this;
56 }
57
58 RootWindowController* root_window_controller_;
59 views::Widget* desktop_widget_;
60
61 // Is this object observing the initial brightness/grayscale animation?
62 const bool is_initial_animation_;
63
64 DISALLOW_COPY_AND_ASSIGN(ShowWallpaperAnimationObserver);
65 };
66
67 } // namespace
68
DesktopBackgroundWidgetController(views::Widget * widget)69 DesktopBackgroundWidgetController::DesktopBackgroundWidgetController(
70 views::Widget* widget) : widget_(widget) {
71 DCHECK(widget_);
72 widget_->AddObserver(this);
73 }
74
~DesktopBackgroundWidgetController()75 DesktopBackgroundWidgetController::~DesktopBackgroundWidgetController() {
76 if (widget_) {
77 widget_->RemoveObserver(this);
78 widget_->CloseNow();
79 widget_ = NULL;
80 }
81 }
82
OnWidgetDestroying(views::Widget * widget)83 void DesktopBackgroundWidgetController::OnWidgetDestroying(
84 views::Widget* widget) {
85 widget_->RemoveObserver(this);
86 widget_ = NULL;
87 }
88
SetBounds(gfx::Rect bounds)89 void DesktopBackgroundWidgetController::SetBounds(gfx::Rect bounds) {
90 if (widget_)
91 widget_->SetBounds(bounds);
92 }
93
Reparent(aura::Window * root_window,int src_container,int dest_container)94 bool DesktopBackgroundWidgetController::Reparent(aura::Window* root_window,
95 int src_container,
96 int dest_container) {
97 if (widget_) {
98 views::Widget::ReparentNativeView(widget_->GetNativeView(),
99 root_window->GetChildById(dest_container));
100 return true;
101 }
102 // Nothing to reparent.
103 return false;
104 }
105
StartAnimating(RootWindowController * root_window_controller)106 void DesktopBackgroundWidgetController::StartAnimating(
107 RootWindowController* root_window_controller) {
108 if (widget_) {
109 ui::ScopedLayerAnimationSettings settings(
110 widget_->GetNativeView()->layer()->GetAnimator());
111 settings.AddObserver(new ShowWallpaperAnimationObserver(
112 root_window_controller, widget_,
113 Shell::GetInstance()->user_wallpaper_delegate()->
114 ShouldShowInitialAnimation()));
115 // When |widget_| shows, AnimateShowWindowCommon() is called to do the
116 // animation. Sets transition duration to 0 to avoid animating to the
117 // show animation's initial values.
118 settings.SetTransitionDuration(base::TimeDelta());
119 widget_->Show();
120 widget_->GetNativeView()->SetName("DesktopBackgroundView");
121 }
122 }
123
AnimatingDesktopController(DesktopBackgroundWidgetController * component)124 AnimatingDesktopController::AnimatingDesktopController(
125 DesktopBackgroundWidgetController* component) {
126 controller_.reset(component);
127 }
128
~AnimatingDesktopController()129 AnimatingDesktopController::~AnimatingDesktopController() {
130 }
131
StopAnimating()132 void AnimatingDesktopController::StopAnimating() {
133 if (controller_) {
134 ui::Layer* layer = controller_->widget()->GetNativeView()->layer();
135 layer->GetAnimator()->StopAnimating();
136 }
137 }
138
GetController(bool pass_ownership)139 DesktopBackgroundWidgetController* AnimatingDesktopController::GetController(
140 bool pass_ownership) {
141 if (pass_ownership)
142 return controller_.release();
143 return controller_.get();
144 }
145
146 } // namespace ash
147