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
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
|
// Copyright 2013 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/chromeos/brightness/tray_brightness.h"
#include "ash/accelerators/accelerator_controller.h"
#include "ash/ash_constants.h"
#include "ash/metrics/user_metrics_recorder.h"
#include "ash/shell.h"
#include "ash/system/brightness_control_delegate.h"
#include "ash/system/tray/fixed_sized_image_view.h"
#include "ash/system/tray/system_tray_delegate.h"
#include "ash/system/tray/system_tray_notifier.h"
#include "ash/system/tray/tray_constants.h"
#include "base/bind.h"
#include "base/message_loop/message_loop.h"
#include "base/strings/utf_string_conversions.h"
#include "chromeos/dbus/dbus_thread_manager.h"
#include "chromeos/dbus/power_manager_client.h"
#include "grit/ash_resources.h"
#include "grit/ash_strings.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/gfx/image/image.h"
#include "ui/views/controls/button/image_button.h"
#include "ui/views/controls/image_view.h"
#include "ui/views/controls/label.h"
#include "ui/views/controls/slider.h"
#include "ui/views/layout/box_layout.h"
#include "ui/views/view.h"
namespace ash {
namespace internal {
namespace tray {
namespace {
// We don't let the screen brightness go lower than this when it's being
// adjusted via the slider. Otherwise, if the user doesn't know about the
// brightness keys, they may turn the backlight off and not know how to turn it
// back on.
const double kMinBrightnessPercent = 5.0;
} // namespace
class BrightnessView : public views::View,
public views::SliderListener {
public:
explicit BrightnessView(double initial_percent)
: dragging_(false),
last_percent_(initial_percent) {
SetLayoutManager(new views::BoxLayout(views::BoxLayout::kHorizontal,
kTrayPopupPaddingHorizontal, 0, kTrayPopupPaddingBetweenItems));
views::ImageView* icon = new FixedSizedImageView(0, kTrayPopupItemHeight);
gfx::Image image = ui::ResourceBundle::GetSharedInstance().GetImageNamed(
IDR_AURA_UBER_TRAY_BRIGHTNESS);
icon->SetImage(image.ToImageSkia());
AddChildView(icon);
slider_ = new views::Slider(this, views::Slider::HORIZONTAL);
slider_->set_focus_border_color(kFocusBorderColor);
slider_->SetValue(static_cast<float>(initial_percent / 100.0));
slider_->SetAccessibleName(
ui::ResourceBundle::GetSharedInstance().GetLocalizedString(
IDS_ASH_STATUS_TRAY_BRIGHTNESS));
AddChildView(slider_);
}
virtual ~BrightnessView() {}
// |percent| is in the range [0.0, 100.0].
void SetBrightnessPercent(double percent) {
last_percent_ = percent;
if (!dragging_)
slider_->SetValue(static_cast<float>(percent / 100.0));
}
private:
// Overridden from views::View.
virtual void OnBoundsChanged(const gfx::Rect& old_bounds) OVERRIDE {
int w = width() - slider_->x();
slider_->SetSize(gfx::Size(w, slider_->height()));
}
// Overridden from views:SliderListener.
virtual void SliderValueChanged(views::Slider* sender,
float value,
float old_value,
views::SliderChangeReason reason) OVERRIDE {
DCHECK_EQ(sender, slider_);
if (reason != views::VALUE_CHANGED_BY_USER)
return;
AcceleratorController* ac = Shell::GetInstance()->accelerator_controller();
if (ac->brightness_control_delegate()) {
double percent = std::max(value * 100.0, kMinBrightnessPercent);
ac->brightness_control_delegate()->SetBrightnessPercent(percent, true);
}
}
// Overridden from views:SliderListener.
virtual void SliderDragStarted(views::Slider* slider) OVERRIDE {
DCHECK_EQ(slider, slider_);
dragging_ = true;
}
// Overridden from views:SliderListener.
virtual void SliderDragEnded(views::Slider* slider) OVERRIDE {
DCHECK_EQ(slider, slider_);
dragging_ = false;
slider_->SetValue(static_cast<float>(last_percent_ / 100.0));
}
views::Slider* slider_;
// Is |slider_| currently being dragged?
bool dragging_;
// Last brightness level that we observed, in the range [0.0, 100.0].
double last_percent_;
DISALLOW_COPY_AND_ASSIGN(BrightnessView);
};
} // namespace tray
TrayBrightness::TrayBrightness(SystemTray* system_tray)
: SystemTrayItem(system_tray),
weak_ptr_factory_(this),
brightness_view_(NULL),
is_default_view_(false),
current_percent_(100.0),
got_current_percent_(false) {
// Post a task to get the initial brightness; the BrightnessControlDelegate
// isn't created yet.
base::MessageLoopForUI::current()->PostTask(
FROM_HERE,
base::Bind(&TrayBrightness::GetInitialBrightness,
weak_ptr_factory_.GetWeakPtr()));
chromeos::DBusThreadManager::Get()->GetPowerManagerClient()->
AddObserver(this);
}
TrayBrightness::~TrayBrightness() {
chromeos::DBusThreadManager::Get()->GetPowerManagerClient()->
RemoveObserver(this);
}
void TrayBrightness::GetInitialBrightness() {
BrightnessControlDelegate* delegate =
Shell::GetInstance()->accelerator_controller()->
brightness_control_delegate();
// Worrisome, but happens in unit tests, so don't log anything.
if (!delegate)
return;
delegate->GetBrightnessPercent(
base::Bind(&TrayBrightness::HandleInitialBrightness,
weak_ptr_factory_.GetWeakPtr()));
}
void TrayBrightness::HandleInitialBrightness(double percent) {
if (!got_current_percent_)
HandleBrightnessChanged(percent, false);
}
views::View* TrayBrightness::CreateTrayView(user::LoginStatus status) {
return NULL;
}
views::View* TrayBrightness::CreateDefaultView(user::LoginStatus status) {
return NULL;
}
views::View* TrayBrightness::CreateDetailedView(user::LoginStatus status) {
CHECK(brightness_view_ == NULL);
Shell::GetInstance()->metrics()->RecordUserMetricsAction(
ash::UMA_STATUS_AREA_DETAILED_BRIGHTNESS_VIEW);
brightness_view_ = new tray::BrightnessView(current_percent_);
is_default_view_ = false;
return brightness_view_;
}
void TrayBrightness::DestroyTrayView() {
}
void TrayBrightness::DestroyDefaultView() {
if (is_default_view_)
brightness_view_ = NULL;
}
void TrayBrightness::DestroyDetailedView() {
if (!is_default_view_)
brightness_view_ = NULL;
}
void TrayBrightness::UpdateAfterLoginStatusChange(user::LoginStatus status) {
}
bool TrayBrightness::ShouldHideArrow() const {
return true;
}
bool TrayBrightness::ShouldShowLauncher() const {
return false;
}
void TrayBrightness::BrightnessChanged(int level, bool user_initiated) {
Shell::GetInstance()->metrics()->RecordUserMetricsAction(
ash::UMA_STATUS_AREA_BRIGHTNESS_CHANGED);
double percent = static_cast<double>(level);
HandleBrightnessChanged(percent, user_initiated);
}
void TrayBrightness::HandleBrightnessChanged(double percent,
bool user_initiated) {
current_percent_ = percent;
got_current_percent_ = true;
if (brightness_view_)
brightness_view_->SetBrightnessPercent(percent);
if (!user_initiated)
return;
if (brightness_view_)
SetDetailedViewCloseDelay(kTrayPopupAutoCloseDelayInSeconds);
else
PopupDetailedView(kTrayPopupAutoCloseDelayInSeconds, false);
}
} // namespace internal
} // namespace ash
|
