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Issue 2732813002: chromeos: Move files in //ash/common to //ash, part 1 (Closed)
Patch Set: rebase Created 3 years, 9 months ago
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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/common/system/status_area_widget_delegate.h"
6
7 #include "ash/common/focus_cycler.h"
8 #include "ash/common/shelf/shelf_constants.h"
9 #include "ash/common/shelf/wm_shelf.h"
10 #include "ash/common/shelf/wm_shelf_util.h"
11 #include "ash/common/system/tray/tray_constants.h"
12 #include "ash/common/wm_shell.h"
13 #include "ash/common/wm_window.h"
14 #include "ash/root_window_controller.h"
15 #include "ui/compositor/layer.h"
16 #include "ui/compositor/scoped_layer_animation_settings.h"
17 #include "ui/gfx/animation/tween.h"
18 #include "ui/views/accessible_pane_view.h"
19 #include "ui/views/border.h"
20 #include "ui/views/layout/grid_layout.h"
21
22 namespace {
23
24 constexpr int kAnimationDurationMs = 250;
25
26 constexpr int kPaddingFromEdgeOfShelf = 3;
27
28 class StatusAreaWidgetDelegateAnimationSettings
29 : public ui::ScopedLayerAnimationSettings {
30 public:
31 explicit StatusAreaWidgetDelegateAnimationSettings(ui::Layer* layer)
32 : ui::ScopedLayerAnimationSettings(layer->GetAnimator()) {
33 SetTransitionDuration(
34 base::TimeDelta::FromMilliseconds(kAnimationDurationMs));
35 SetPreemptionStrategy(ui::LayerAnimator::IMMEDIATELY_ANIMATE_TO_NEW_TARGET);
36 SetTweenType(gfx::Tween::EASE_IN_OUT);
37 }
38
39 ~StatusAreaWidgetDelegateAnimationSettings() override {}
40
41 private:
42 DISALLOW_COPY_AND_ASSIGN(StatusAreaWidgetDelegateAnimationSettings);
43 };
44
45 } // namespace
46
47 namespace ash {
48
49 StatusAreaWidgetDelegate::StatusAreaWidgetDelegate()
50 : focus_cycler_for_testing_(nullptr), alignment_(SHELF_ALIGNMENT_BOTTOM) {
51 // Allow the launcher to surrender the focus to another window upon
52 // navigation completion by the user.
53 set_allow_deactivate_on_esc(true);
54 SetPaintToLayer();
55 layer()->SetFillsBoundsOpaquely(false);
56 }
57
58 StatusAreaWidgetDelegate::~StatusAreaWidgetDelegate() {}
59
60 void StatusAreaWidgetDelegate::SetFocusCyclerForTesting(
61 const FocusCycler* focus_cycler) {
62 focus_cycler_for_testing_ = focus_cycler;
63 }
64
65 views::View* StatusAreaWidgetDelegate::GetDefaultFocusableChild() {
66 return child_at(0);
67 }
68
69 views::Widget* StatusAreaWidgetDelegate::GetWidget() {
70 return View::GetWidget();
71 }
72
73 const views::Widget* StatusAreaWidgetDelegate::GetWidget() const {
74 return View::GetWidget();
75 }
76
77 void StatusAreaWidgetDelegate::OnGestureEvent(ui::GestureEvent* event) {
78 views::Widget* target_widget =
79 static_cast<views::View*>(event->target())->GetWidget();
80 WmWindow* target_window = WmWindow::Get(target_widget->GetNativeWindow());
81 WmShelf* shelf = target_window->GetRootWindowController()->GetShelf();
82 if (shelf->ProcessGestureEvent(*event))
83 event->StopPropagation();
84 else
85 views::AccessiblePaneView::OnGestureEvent(event);
86 }
87
88 bool StatusAreaWidgetDelegate::CanActivate() const {
89 // We don't want mouse clicks to activate us, but we need to allow
90 // activation when the user is using the keyboard (FocusCycler).
91 const FocusCycler* focus_cycler = focus_cycler_for_testing_
92 ? focus_cycler_for_testing_
93 : WmShell::Get()->focus_cycler();
94 return focus_cycler->widget_activating() == GetWidget();
95 }
96
97 void StatusAreaWidgetDelegate::DeleteDelegate() {}
98
99 void StatusAreaWidgetDelegate::AddTray(views::View* tray) {
100 SetLayoutManager(NULL); // Reset layout manager before adding a child.
101 AddChildView(tray);
102 // Set the layout manager with the new list of children.
103 UpdateLayout();
104 }
105
106 void StatusAreaWidgetDelegate::UpdateLayout() {
107 // Use a grid layout so that the trays can be centered in each cell, and
108 // so that the widget gets laid out correctly when tray sizes change.
109 views::GridLayout* layout = new views::GridLayout(this);
110 SetLayoutManager(layout);
111
112 // Update tray border based on layout.
113 bool is_child_on_edge = true;
114 for (int c = 0; c < child_count(); ++c) {
115 views::View* child = child_at(c);
116 if (!child->visible())
117 continue;
118 SetBorderOnChild(child, is_child_on_edge);
119 is_child_on_edge = false;
120 }
121
122 views::ColumnSet* columns = layout->AddColumnSet(0);
123
124 if (IsHorizontalAlignment(alignment_)) {
125 for (int c = child_count() - 1; c >= 0; --c) {
126 views::View* child = child_at(c);
127 if (!child->visible())
128 continue;
129 columns->AddColumn(views::GridLayout::CENTER, views::GridLayout::FILL,
130 0, /* resize percent */
131 views::GridLayout::USE_PREF, 0, 0);
132 }
133 layout->StartRow(0, 0);
134 for (int c = child_count() - 1; c >= 0; --c) {
135 views::View* child = child_at(c);
136 if (child->visible())
137 layout->AddView(child);
138 }
139 } else {
140 columns->AddColumn(views::GridLayout::FILL, views::GridLayout::CENTER,
141 0, /* resize percent */
142 views::GridLayout::USE_PREF, 0, 0);
143 for (int c = child_count() - 1; c >= 0; --c) {
144 views::View* child = child_at(c);
145 if (!child->visible())
146 continue;
147 layout->StartRow(0, 0);
148 layout->AddView(child);
149 }
150 }
151
152 layer()->GetAnimator()->StopAnimating();
153 StatusAreaWidgetDelegateAnimationSettings settings(layer());
154
155 Layout();
156 UpdateWidgetSize();
157 }
158
159 void StatusAreaWidgetDelegate::ChildPreferredSizeChanged(View* child) {
160 // Need to resize the window when trays or items are added/removed.
161 StatusAreaWidgetDelegateAnimationSettings settings(layer());
162 UpdateWidgetSize();
163 }
164
165 void StatusAreaWidgetDelegate::ChildVisibilityChanged(View* child) {
166 UpdateLayout();
167 }
168
169 void StatusAreaWidgetDelegate::UpdateWidgetSize() {
170 if (GetWidget())
171 GetWidget()->SetSize(GetPreferredSize());
172 }
173
174 void StatusAreaWidgetDelegate::SetBorderOnChild(views::View* child,
175 bool extend_border_to_edge) {
176 // Tray views are laid out right-to-left or bottom-to-top.
177 const bool horizontal_alignment = IsHorizontalAlignment(alignment_);
178 const int padding = (GetShelfConstant(SHELF_SIZE) - kTrayItemSize) / 2;
179
180 const int top_edge = horizontal_alignment ? padding : 0;
181 const int left_edge = horizontal_alignment ? 0 : padding;
182 const int bottom_edge =
183 horizontal_alignment
184 ? padding
185 : (extend_border_to_edge ? kPaddingFromEdgeOfShelf : 0);
186 const int right_edge =
187 horizontal_alignment
188 ? (extend_border_to_edge ? kPaddingFromEdgeOfShelf : 0)
189 : padding;
190 child->SetBorder(
191 views::CreateEmptyBorder(top_edge, left_edge, bottom_edge, right_edge));
192
193 // Layout on |child| needs to be updated based on new border value before
194 // displaying; otherwise |child| will be showing with old border size.
195 // Fix for crbug.com/623438.
196 child->Layout();
197 }
198
199 } // namespace ash
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