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1 // Copyright 2014 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 "athena/screen/modal_window_controller.h" | |
6 | |
7 #include "athena/screen/public/screen_manager.h" | |
8 #include "base/message_loop/message_loop.h" | |
9 #include "ui/aura/window.h" | |
10 #include "ui/aura/window_property.h" | |
11 #include "ui/compositor/layer.h" | |
12 #include "ui/compositor/layer_animation_observer.h" | |
13 #include "ui/compositor/scoped_layer_animation_settings.h" | |
14 #include "ui/wm/core/window_animations.h" | |
15 | |
16 DECLARE_WINDOW_PROPERTY_TYPE(athena::ModalWindowController*); | |
17 | |
18 namespace athena { | |
19 namespace { | |
20 | |
21 DEFINE_OWNED_WINDOW_PROPERTY_KEY(ModalWindowController, | |
22 kModalWindowControllerKey, | |
23 nullptr); | |
24 | |
25 } // namespace | |
26 | |
27 // static | |
28 ModalWindowController* ModalWindowController::Get(aura::Window* container) { | |
29 ModalWindowController* controller = | |
30 container->GetProperty(kModalWindowControllerKey); | |
31 CHECK(controller); | |
32 return controller; | |
33 } | |
34 | |
35 ModalWindowController::ModalWindowController(int priority) | |
36 : modal_container_(nullptr), | |
37 dimmer_window_(new aura::Window(nullptr)), | |
38 dimmed_(false) { | |
39 ScreenManager::ContainerParams params("ModalContainer", priority); | |
40 params.can_activate_children = true; | |
41 params.block_events = true; | |
42 modal_container_ = ScreenManager::Get()->CreateContainer(params); | |
43 modal_container_->SetProperty(kModalWindowControllerKey, this); | |
44 | |
45 dimmer_window_->SetType(ui::wm::WINDOW_TYPE_NORMAL); | |
46 dimmer_window_->Init(aura::WINDOW_LAYER_SOLID_COLOR); | |
47 dimmer_window_->layer()->SetColor(SK_ColorBLACK); | |
48 dimmer_window_->layer()->SetOpacity(0.0f); | |
49 dimmer_window_->Show(); | |
50 | |
51 modal_container_->AddChild(dimmer_window_); | |
52 modal_container_->AddObserver(this); | |
53 | |
54 UpdateDimmerWindowBounds(); | |
55 } | |
56 | |
57 ModalWindowController::~ModalWindowController() { | |
58 if (modal_container_) | |
59 modal_container_->RemoveObserver(this); | |
60 } | |
61 | |
62 void ModalWindowController::OnWindowAdded(aura::Window* child) { | |
63 DCHECK_NE(child, dimmer_window_); | |
64 if (IsChildWindow(child)) { | |
65 child->AddObserver(this); | |
66 UpdateDimming(nullptr); | |
67 } | |
68 } | |
69 | |
70 void ModalWindowController::OnWindowVisibilityChanged(aura::Window* window, | |
71 bool visible) { | |
72 if (IsChildWindow(window)) | |
73 UpdateDimming(nullptr); | |
74 } | |
75 | |
76 void ModalWindowController::OnWindowBoundsChanged(aura::Window* window, | |
77 const gfx::Rect& old_bounds, | |
78 const gfx::Rect& new_bounds) { | |
79 if (window == modal_container_) | |
80 UpdateDimmerWindowBounds(); | |
81 } | |
82 | |
83 void ModalWindowController::OnWindowDestroyed(aura::Window* window) { | |
84 UpdateDimming(window); | |
85 } | |
86 | |
87 bool ModalWindowController::IsChildWindow(aura::Window* child) const { | |
88 return child->parent() == modal_container_ && child != dimmer_window_; | |
89 } | |
90 | |
91 void ModalWindowController::UpdateDimmerWindowBounds() { | |
92 gfx::Rect bounds(modal_container_->bounds().size()); | |
93 dimmer_window_->SetBounds(bounds); | |
94 } | |
95 | |
96 void ModalWindowController::UpdateDimming(aura::Window* ignore) { | |
97 if (!modal_container_ || !dimmer_window_) | |
98 return; | |
99 bool should_delete = true; | |
100 for (aura::Window* window : modal_container_->children()) { | |
101 if (window == dimmer_window_ || window == ignore) | |
102 continue; | |
103 should_delete = false; | |
104 if (window->TargetVisibility()) { | |
105 SetDimmed(true); | |
106 return; | |
107 } | |
108 } | |
109 SetDimmed(false); | |
110 | |
111 if (should_delete) { | |
112 // Remove the container from root so that the container becomes | |
113 // invisible, but don't delete it until next event execution | |
114 // because the call stack may still have and use the pointer. | |
115 modal_container_->RemoveObserver(this); | |
116 | |
117 // Hide the window before removing it, so the focus manager which will run | |
118 // in RemoveChild handler can know that this container is no longer | |
119 // available. | |
120 modal_container_->Hide(); | |
121 | |
122 modal_container_->parent()->RemoveChild(modal_container_); | |
123 base::MessageLoopForUI::current()->DeleteSoon(FROM_HERE, modal_container_); | |
124 modal_container_ = nullptr; | |
125 dimmer_window_ = nullptr; | |
126 } | |
127 } | |
128 | |
129 void ModalWindowController::SetDimmed(bool dimmed) { | |
130 const float kDimmedOpacity = 0.4f; | |
131 | |
132 if (!dimmer_window_ || dimmed_ == dimmed) | |
133 return; | |
134 dimmed_ = dimmed; | |
135 | |
136 const int kDimmAnimationDurationMs = 500; | |
137 if (dimmed) { | |
138 ui::ScopedLayerAnimationSettings settings( | |
139 dimmer_window_->layer()->GetAnimator()); | |
140 settings.SetTransitionDuration( | |
141 base::TimeDelta::FromMilliseconds(kDimmAnimationDurationMs)); | |
142 dimmer_window_->layer()->SetOpacity(kDimmedOpacity); | |
143 } else { | |
144 // ScopedHidingAnimationSettings will detach the animating and | |
145 // recreate layers for the container so that animation can continue | |
146 // even if the container is removed immediately. | |
147 wm::ScopedHidingAnimationSettings settings(modal_container_); | |
148 settings.layer_animation_settings()->SetTransitionDuration( | |
149 base::TimeDelta::FromMilliseconds(kDimmAnimationDurationMs)); | |
150 modal_container_->layer()->SetOpacity(0.0f); | |
151 } | |
152 } | |
153 | |
154 } // namespace athena | |
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