1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ash/system/status_area_widget_delegate.h"
#include "ash/ash_export.h"
#include "ash/ash_switches.h"
#include "ash/focus_cycler.h"
#include "ash/shell.h"
#include "ash/shell_window_ids.h"
#include "ash/system/tray/tray_constants.h"
#include "base/memory/scoped_ptr.h"
#include "base/strings/utf_string_conversions.h"
#include "ui/aura/window_event_dispatcher.h"
#include "ui/compositor/layer.h"
#include "ui/compositor/scoped_layer_animation_settings.h"
#include "ui/gfx/animation/tween.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/image/image.h"
#include "ui/views/accessible_pane_view.h"
#include "ui/views/layout/grid_layout.h"
#include "ui/views/widget/widget.h"
namespace {
const int kAnimationDurationMs = 250;
class StatusAreaWidgetDelegateAnimationSettings
: public ui::ScopedLayerAnimationSettings {
public:
explicit StatusAreaWidgetDelegateAnimationSettings(ui::Layer* layer)
: ui::ScopedLayerAnimationSettings(layer->GetAnimator()) {
SetTransitionDuration(
base::TimeDelta::FromMilliseconds(kAnimationDurationMs));
SetPreemptionStrategy(
ui::LayerAnimator::IMMEDIATELY_ANIMATE_TO_NEW_TARGET);
SetTweenType(gfx::Tween::EASE_IN_OUT);
}
~StatusAreaWidgetDelegateAnimationSettings() override {}
private:
DISALLOW_COPY_AND_ASSIGN(StatusAreaWidgetDelegateAnimationSettings);
};
} // namespace
namespace ash {
StatusAreaWidgetDelegate::StatusAreaWidgetDelegate()
: focus_cycler_for_testing_(NULL),
alignment_(SHELF_ALIGNMENT_BOTTOM) {
// Allow the launcher to surrender the focus to another window upon
// navigation completion by the user.
set_allow_deactivate_on_esc(true);
SetPaintToLayer(true);
layer()->SetFillsBoundsOpaquely(false);
}
StatusAreaWidgetDelegate::~StatusAreaWidgetDelegate() {
}
void StatusAreaWidgetDelegate::SetFocusCyclerForTesting(
const FocusCycler* focus_cycler) {
focus_cycler_for_testing_ = focus_cycler;
}
views::View* StatusAreaWidgetDelegate::GetDefaultFocusableChild() {
return child_at(0);
}
views::Widget* StatusAreaWidgetDelegate::GetWidget() {
return View::GetWidget();
}
const views::Widget* StatusAreaWidgetDelegate::GetWidget() const {
return View::GetWidget();
}
void StatusAreaWidgetDelegate::OnGestureEvent(ui::GestureEvent* event) {
aura::Window* target_window = static_cast<views::View*>(event->target())
->GetWidget()
->GetNativeWindow();
if (gesture_handler_.ProcessGestureEvent(*event, target_window))
event->StopPropagation();
else
views::AccessiblePaneView::OnGestureEvent(event);
}
bool StatusAreaWidgetDelegate::CanActivate() const {
// We don't want mouse clicks to activate us, but we need to allow
// activation when the user is using the keyboard (FocusCycler).
const FocusCycler* focus_cycler = focus_cycler_for_testing_ ?
focus_cycler_for_testing_ : Shell::GetInstance()->focus_cycler();
return focus_cycler->widget_activating() == GetWidget();
}
void StatusAreaWidgetDelegate::DeleteDelegate() {
}
void StatusAreaWidgetDelegate::AddTray(views::View* tray) {
SetLayoutManager(NULL); // Reset layout manager before adding a child.
AddChildView(tray);
// Set the layout manager with the new list of children.
UpdateLayout();
}
void StatusAreaWidgetDelegate::UpdateLayout() {
// Use a grid layout so that the trays can be centered in each cell, and
// so that the widget gets laid out correctly when tray sizes change.
views::GridLayout* layout = new views::GridLayout(this);
SetLayoutManager(layout);
views::ColumnSet* columns = layout->AddColumnSet(0);
if (alignment_ == SHELF_ALIGNMENT_BOTTOM ||
alignment_ == SHELF_ALIGNMENT_TOP) {
bool is_first_visible_child = true;
for (int c = 0; c < child_count(); ++c) {
views::View* child = child_at(c);
if (!child->visible())
continue;
if (!is_first_visible_child)
columns->AddPaddingColumn(0, kTraySpacing);
is_first_visible_child = false;
columns->AddColumn(views::GridLayout::CENTER, views::GridLayout::FILL,
0, /* resize percent */
views::GridLayout::USE_PREF, 0, 0);
}
layout->StartRow(0, 0);
for (int c = child_count() - 1; c >= 0; --c) {
views::View* child = child_at(c);
if (child->visible())
layout->AddView(child);
}
} else {
columns->AddColumn(views::GridLayout::FILL, views::GridLayout::CENTER,
0, /* resize percent */
views::GridLayout::USE_PREF, 0, 0);
bool is_first_visible_child = true;
for (int c = child_count() - 1; c >= 0; --c) {
views::View* child = child_at(c);
if (!child->visible())
continue;
if (!is_first_visible_child)
layout->AddPaddingRow(0, kTraySpacing);
is_first_visible_child = false;
layout->StartRow(0, 0);
layout->AddView(child);
}
}
layer()->GetAnimator()->StopAnimating();
StatusAreaWidgetDelegateAnimationSettings settings(layer());
Layout();
UpdateWidgetSize();
}
void StatusAreaWidgetDelegate::ChildPreferredSizeChanged(View* child) {
// Need to resize the window when trays or items are added/removed.
StatusAreaWidgetDelegateAnimationSettings settings(layer());
UpdateWidgetSize();
}
void StatusAreaWidgetDelegate::ChildVisibilityChanged(View* child) {
UpdateLayout();
}
void StatusAreaWidgetDelegate::UpdateWidgetSize() {
if (GetWidget())
GetWidget()->SetSize(GetPreferredSize());
}
} // namespace ash
|
