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1 // Copyright 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/common/shelf/shelf_widget.h" | |
6 | |
7 #include "ash/animation/animation_change_type.h" | |
8 #include "ash/common/focus_cycler.h" | |
9 #include "ash/common/session/session_state_delegate.h" | |
10 #include "ash/common/shelf/app_list_button.h" | |
11 #include "ash/common/shelf/shelf_background_animator_observer.h" | |
12 #include "ash/common/shelf/shelf_constants.h" | |
13 #include "ash/common/shelf/shelf_delegate.h" | |
14 #include "ash/common/shelf/shelf_layout_manager.h" | |
15 #include "ash/common/shelf/shelf_view.h" | |
16 #include "ash/common/shelf/wm_shelf.h" | |
17 #include "ash/common/shelf/wm_shelf_util.h" | |
18 #include "ash/common/wm_shell.h" | |
19 #include "ash/common/wm_window.h" | |
20 #include "ash/root_window_controller.h" | |
21 #include "ash/system/status_area_layout_manager.h" | |
22 #include "ash/system/status_area_widget.h" | |
23 #include "ash/wm/window_properties.h" | |
24 #include "base/memory/ptr_util.h" | |
25 #include "ui/compositor/layer.h" | |
26 #include "ui/compositor/scoped_layer_animation_settings.h" | |
27 #include "ui/gfx/skbitmap_operations.h" | |
28 #include "ui/views/accessible_pane_view.h" | |
29 #include "ui/views/layout/fill_layout.h" | |
30 #include "ui/views/widget/widget.h" | |
31 #include "ui/views/widget/widget_delegate.h" | |
32 | |
33 namespace ash { | |
34 | |
35 // The contents view of the Shelf. This view contains ShelfView and | |
36 // sizes it to the width of the shelf minus the size of the status area. | |
37 class ShelfWidget::DelegateView : public views::WidgetDelegate, | |
38 public views::AccessiblePaneView, | |
39 public ShelfBackgroundAnimatorObserver { | |
40 public: | |
41 explicit DelegateView(ShelfWidget* shelf); | |
42 ~DelegateView() override; | |
43 | |
44 void set_focus_cycler(FocusCycler* focus_cycler) { | |
45 focus_cycler_ = focus_cycler; | |
46 } | |
47 FocusCycler* focus_cycler() { return focus_cycler_; } | |
48 | |
49 ui::Layer* opaque_background() { return &opaque_background_; } | |
50 ui::Layer* opaque_foreground() { return &opaque_foreground_; } | |
51 | |
52 void SetParentLayer(ui::Layer* layer); | |
53 | |
54 // views::WidgetDelegateView overrides: | |
55 views::Widget* GetWidget() override { return View::GetWidget(); } | |
56 const views::Widget* GetWidget() const override { return View::GetWidget(); } | |
57 | |
58 bool CanActivate() const override; | |
59 void ReorderChildLayers(ui::Layer* parent_layer) override; | |
60 // This will be called when the parent local bounds change. | |
61 void OnBoundsChanged(const gfx::Rect& old_bounds) override; | |
62 | |
63 // ShelfBackgroundAnimatorObserver: | |
64 void UpdateShelfBackground(SkColor color) override; | |
65 | |
66 private: | |
67 ShelfWidget* shelf_widget_; | |
68 FocusCycler* focus_cycler_; | |
69 // A black background layer that may be visible depending on a | |
70 // ShelfBackgroundAnimator. | |
71 // TODO(bruthig): Remove opaque_background_ (see https://crbug.com/621551). | |
72 ui::Layer opaque_background_; | |
73 // A black foreground layer which is shown while transitioning between users. | |
74 // Note: Since the back- and foreground layers have different functions they | |
75 // can be used simultaneously - so no repurposing possible. | |
76 ui::Layer opaque_foreground_; | |
77 | |
78 DISALLOW_COPY_AND_ASSIGN(DelegateView); | |
79 }; | |
80 | |
81 ShelfWidget::DelegateView::DelegateView(ShelfWidget* shelf_widget) | |
82 : shelf_widget_(shelf_widget), | |
83 focus_cycler_(nullptr), | |
84 opaque_background_(ui::LAYER_SOLID_COLOR), | |
85 opaque_foreground_(ui::LAYER_SOLID_COLOR) { | |
86 DCHECK(shelf_widget_); | |
87 SetLayoutManager(new views::FillLayout()); | |
88 set_allow_deactivate_on_esc(true); | |
89 opaque_background_.SetColor(SK_ColorBLACK); | |
90 opaque_background_.SetBounds(GetLocalBounds()); | |
91 opaque_foreground_.SetColor(SK_ColorBLACK); | |
92 opaque_foreground_.SetBounds(GetLocalBounds()); | |
93 opaque_foreground_.SetOpacity(0.0f); | |
94 } | |
95 | |
96 ShelfWidget::DelegateView::~DelegateView() {} | |
97 | |
98 void ShelfWidget::DelegateView::SetParentLayer(ui::Layer* layer) { | |
99 layer->Add(&opaque_background_); | |
100 layer->Add(&opaque_foreground_); | |
101 ReorderLayers(); | |
102 } | |
103 | |
104 bool ShelfWidget::DelegateView::CanActivate() const { | |
105 // Allow to activate as fallback. | |
106 if (shelf_widget_->activating_as_fallback_) | |
107 return true; | |
108 // Allow to activate from the focus cycler. | |
109 if (focus_cycler_ && focus_cycler_->widget_activating() == GetWidget()) | |
110 return true; | |
111 // Disallow activating in other cases, especially when using mouse. | |
112 return false; | |
113 } | |
114 | |
115 void ShelfWidget::DelegateView::ReorderChildLayers(ui::Layer* parent_layer) { | |
116 views::View::ReorderChildLayers(parent_layer); | |
117 parent_layer->StackAtBottom(&opaque_background_); | |
118 parent_layer->StackAtTop(&opaque_foreground_); | |
119 } | |
120 | |
121 void ShelfWidget::DelegateView::OnBoundsChanged(const gfx::Rect& old_bounds) { | |
122 opaque_background_.SetBounds(GetLocalBounds()); | |
123 opaque_foreground_.SetBounds(GetLocalBounds()); | |
124 } | |
125 | |
126 void ShelfWidget::DelegateView::UpdateShelfBackground(SkColor color) { | |
127 opaque_background_.SetColor(color); | |
128 } | |
129 | |
130 ShelfWidget::ShelfWidget(WmWindow* shelf_container, WmShelf* wm_shelf) | |
131 : wm_shelf_(wm_shelf), | |
132 status_area_widget_(nullptr), | |
133 delegate_view_(new DelegateView(this)), | |
134 shelf_view_(nullptr), | |
135 background_animator_(SHELF_BACKGROUND_DEFAULT, | |
136 wm_shelf_, | |
137 WmShell::Get()->wallpaper_controller()), | |
138 activating_as_fallback_(false) { | |
139 DCHECK(wm_shelf_); | |
140 background_animator_.AddObserver(this); | |
141 background_animator_.AddObserver(delegate_view_); | |
142 | |
143 views::Widget::InitParams params( | |
144 views::Widget::InitParams::TYPE_WINDOW_FRAMELESS); | |
145 params.name = "ShelfWidget"; | |
146 params.opacity = views::Widget::InitParams::TRANSLUCENT_WINDOW; | |
147 params.ownership = views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET; | |
148 params.delegate = delegate_view_; | |
149 shelf_container->GetRootWindowController() | |
150 ->ConfigureWidgetInitParamsForContainer( | |
151 this, shelf_container->GetShellWindowId(), ¶ms); | |
152 Init(params); | |
153 | |
154 // The shelf should not take focus when initially shown. | |
155 set_focus_on_creation(false); | |
156 SetContentsView(delegate_view_); | |
157 delegate_view_->SetParentLayer(GetLayer()); | |
158 | |
159 shelf_layout_manager_ = new ShelfLayoutManager(this, wm_shelf_); | |
160 shelf_layout_manager_->AddObserver(this); | |
161 shelf_container->SetLayoutManager(base::WrapUnique(shelf_layout_manager_)); | |
162 background_animator_.PaintBackground( | |
163 shelf_layout_manager_->GetShelfBackgroundType(), | |
164 AnimationChangeType::IMMEDIATE); | |
165 | |
166 views::Widget::AddObserver(this); | |
167 } | |
168 | |
169 ShelfWidget::~ShelfWidget() { | |
170 // Must call Shutdown() before destruction. | |
171 DCHECK(!status_area_widget_); | |
172 WmShell::Get()->focus_cycler()->RemoveWidget(this); | |
173 SetFocusCycler(nullptr); | |
174 RemoveObserver(this); | |
175 background_animator_.RemoveObserver(delegate_view_); | |
176 background_animator_.RemoveObserver(this); | |
177 } | |
178 | |
179 void ShelfWidget::CreateStatusAreaWidget(WmWindow* status_container) { | |
180 DCHECK(status_container); | |
181 DCHECK(!status_area_widget_); | |
182 // TODO(jamescook): Move ownership to RootWindowController. | |
183 status_area_widget_ = new StatusAreaWidget(status_container, wm_shelf_); | |
184 status_area_widget_->CreateTrayViews(); | |
185 if (WmShell::Get()->GetSessionStateDelegate()->IsActiveUserSessionStarted()) | |
186 status_area_widget_->Show(); | |
187 WmShell::Get()->focus_cycler()->AddWidget(status_area_widget_); | |
188 background_animator_.AddObserver(status_area_widget_); | |
189 status_container->SetLayoutManager( | |
190 base::MakeUnique<StatusAreaLayoutManager>(this)); | |
191 } | |
192 | |
193 void ShelfWidget::SetPaintsBackground(ShelfBackgroundType background_type, | |
194 AnimationChangeType change_type) { | |
195 background_animator_.PaintBackground(background_type, change_type); | |
196 } | |
197 | |
198 ShelfBackgroundType ShelfWidget::GetBackgroundType() const { | |
199 return background_animator_.target_background_type(); | |
200 } | |
201 | |
202 void ShelfWidget::HideShelfBehindBlackBar(bool hide, int animation_time_ms) { | |
203 if (IsShelfHiddenBehindBlackBar() == hide) | |
204 return; | |
205 | |
206 ui::Layer* opaque_foreground = delegate_view_->opaque_foreground(); | |
207 float target_opacity = hide ? 1.0f : 0.0f; | |
208 std::unique_ptr<ui::ScopedLayerAnimationSettings> opaque_foreground_animation; | |
209 opaque_foreground_animation.reset( | |
210 new ui::ScopedLayerAnimationSettings(opaque_foreground->GetAnimator())); | |
211 opaque_foreground_animation->SetTransitionDuration( | |
212 base::TimeDelta::FromMilliseconds(animation_time_ms)); | |
213 opaque_foreground_animation->SetPreemptionStrategy( | |
214 ui::LayerAnimator::REPLACE_QUEUED_ANIMATIONS); | |
215 | |
216 opaque_foreground->SetOpacity(target_opacity); | |
217 } | |
218 | |
219 bool ShelfWidget::IsShelfHiddenBehindBlackBar() const { | |
220 return delegate_view_->opaque_foreground()->GetTargetOpacity() != 0.0f; | |
221 } | |
222 | |
223 void ShelfWidget::OnShelfAlignmentChanged() { | |
224 shelf_view_->OnShelfAlignmentChanged(); | |
225 // TODO(jamescook): Status area should not cache alignment. | |
226 status_area_widget_->SetShelfAlignment(wm_shelf_->GetAlignment()); | |
227 delegate_view_->SchedulePaint(); | |
228 } | |
229 | |
230 ShelfView* ShelfWidget::CreateShelfView() { | |
231 DCHECK(!shelf_view_); | |
232 | |
233 shelf_view_ = | |
234 new ShelfView(WmShell::Get()->shelf_model(), | |
235 WmShell::Get()->shelf_delegate(), wm_shelf_, this); | |
236 shelf_view_->Init(); | |
237 GetContentsView()->AddChildView(shelf_view_); | |
238 return shelf_view_; | |
239 } | |
240 | |
241 void ShelfWidget::PostCreateShelf() { | |
242 SetFocusCycler(WmShell::Get()->focus_cycler()); | |
243 | |
244 // Ensure the newly created |shelf_| gets current values. | |
245 background_animator_.NotifyObserver(this); | |
246 | |
247 // TODO(jamescook): The IsActiveUserSessionStarted() check may not be needed | |
248 // because the shelf is only created after the first user session is active. | |
249 // The ShelfView seems to always be visible after login. At the lock screen | |
250 // the shelf is hidden because its container is hidden. During auto-hide it is | |
251 // hidden because ShelfWidget is transparent. Some of the ShelfView visibility | |
252 // code could be simplified. http://crbug.com/674773 | |
253 shelf_view_->SetVisible( | |
254 WmShell::Get()->GetSessionStateDelegate()->IsActiveUserSessionStarted()); | |
255 shelf_layout_manager_->LayoutShelf(); | |
256 shelf_layout_manager_->UpdateAutoHideState(); | |
257 Show(); | |
258 } | |
259 | |
260 bool ShelfWidget::IsShelfVisible() const { | |
261 return shelf_view_ && shelf_view_->visible(); | |
262 } | |
263 | |
264 bool ShelfWidget::IsShowingAppList() const { | |
265 return GetAppListButton() && GetAppListButton()->is_showing_app_list(); | |
266 } | |
267 | |
268 bool ShelfWidget::IsShowingContextMenu() const { | |
269 return shelf_view_ && shelf_view_->IsShowingMenu(); | |
270 } | |
271 | |
272 bool ShelfWidget::IsShowingOverflowBubble() const { | |
273 return shelf_view_ && shelf_view_->IsShowingOverflowBubble(); | |
274 } | |
275 | |
276 void ShelfWidget::SetFocusCycler(FocusCycler* focus_cycler) { | |
277 delegate_view_->set_focus_cycler(focus_cycler); | |
278 if (focus_cycler) | |
279 focus_cycler->AddWidget(this); | |
280 } | |
281 | |
282 FocusCycler* ShelfWidget::GetFocusCycler() { | |
283 return delegate_view_->focus_cycler(); | |
284 } | |
285 | |
286 void ShelfWidget::Shutdown() { | |
287 // Shutting down the status area widget may cause some widgets (e.g. bubbles) | |
288 // to close, so uninstall the ShelfLayoutManager event filters first. Don't | |
289 // reset the pointer until later because other widgets (e.g. app list) may | |
290 // access it later in shutdown. | |
291 if (shelf_layout_manager_) | |
292 shelf_layout_manager_->PrepareForShutdown(); | |
293 | |
294 if (status_area_widget_) { | |
295 background_animator_.RemoveObserver(status_area_widget_); | |
296 WmShell::Get()->focus_cycler()->RemoveWidget(status_area_widget_); | |
297 status_area_widget_->Shutdown(); | |
298 status_area_widget_ = nullptr; | |
299 } | |
300 | |
301 CloseNow(); | |
302 } | |
303 | |
304 void ShelfWidget::UpdateIconPositionForPanel(WmWindow* panel) { | |
305 if (!shelf_view_) | |
306 return; | |
307 | |
308 WmWindow* shelf_window = WmWindow::Get(this->GetNativeWindow()); | |
309 shelf_view_->UpdatePanelIconPosition( | |
310 panel->aura_window()->GetProperty(kShelfIDKey), | |
311 shelf_window->ConvertRectFromScreen(panel->GetBoundsInScreen()) | |
312 .CenterPoint()); | |
313 } | |
314 | |
315 gfx::Rect ShelfWidget::GetScreenBoundsOfItemIconForWindow(WmWindow* window) { | |
316 // Window animations can be triggered during session restore before the shelf | |
317 // view is created. In that case, return default empty bounds. | |
318 if (!shelf_view_) | |
319 return gfx::Rect(); | |
320 | |
321 ShelfID id = window->aura_window()->GetProperty(kShelfIDKey); | |
322 gfx::Rect bounds(shelf_view_->GetIdealBoundsOfItemIcon(id)); | |
323 gfx::Point screen_origin; | |
324 views::View::ConvertPointToScreen(shelf_view_, &screen_origin); | |
325 return gfx::Rect(screen_origin.x() + bounds.x(), | |
326 screen_origin.y() + bounds.y(), bounds.width(), | |
327 bounds.height()); | |
328 } | |
329 | |
330 AppListButton* ShelfWidget::GetAppListButton() const { | |
331 return shelf_view_ ? shelf_view_->GetAppListButton() : nullptr; | |
332 } | |
333 | |
334 app_list::ApplicationDragAndDropHost* | |
335 ShelfWidget::GetDragAndDropHostForAppList() { | |
336 return shelf_view_; | |
337 } | |
338 | |
339 void ShelfWidget::OnWidgetActivationChanged(views::Widget* widget, | |
340 bool active) { | |
341 activating_as_fallback_ = false; | |
342 if (active) | |
343 delegate_view_->SetPaneFocusAndFocusDefault(); | |
344 else | |
345 delegate_view_->GetFocusManager()->ClearFocus(); | |
346 } | |
347 | |
348 void ShelfWidget::UpdateShelfItemBackground(SkColor color) { | |
349 if (shelf_view_) | |
350 shelf_view_->UpdateShelfItemBackground(color); | |
351 } | |
352 | |
353 void ShelfWidget::WillDeleteShelfLayoutManager() { | |
354 shelf_layout_manager_->RemoveObserver(this); | |
355 shelf_layout_manager_ = nullptr; | |
356 } | |
357 | |
358 } // namespace ash | |
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