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
|
// Copyright 2014 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 "athena/input/power_button_controller.h"
#include "athena/input/public/accelerator_manager.h"
#include "chromeos/dbus/dbus_thread_manager.h"
#include "ui/events/event_constants.h"
namespace athena {
namespace {
// The amount of time that the power button must be held to be
// treated as long press.
const int kLongPressTimeoutMs = 1000;
enum {
CMD_DEBUG_POWER_BUTTON_PRESSED,
CMD_DEBUG_POWER_BUTTON_RELEASED,
};
} // namespace
PowerButtonController::PowerButtonController()
: power_button_timeout_ms_(kLongPressTimeoutMs),
brightness_is_zero_(false) {
chromeos::DBusThreadManager::Get()->GetPowerManagerClient()->AddObserver(
this);
}
PowerButtonController::~PowerButtonController() {
chromeos::DBusThreadManager::Get()->GetPowerManagerClient()->RemoveObserver(
this);
}
void PowerButtonController::AddPowerButtonObserver(
PowerButtonObserver* observer) {
observers_.AddObserver(observer);
}
void PowerButtonController::RemovePowerButtonObserver(
PowerButtonObserver* observer) {
observers_.RemoveObserver(observer);
}
void PowerButtonController::InstallAccelerators() {
const AcceleratorData accelerator_data[] = {
{TRIGGER_ON_PRESS,
ui::VKEY_P,
ui::EF_ALT_DOWN,
CMD_DEBUG_POWER_BUTTON_PRESSED,
AF_DEBUG | AF_NON_AUTO_REPEATABLE},
{TRIGGER_ON_RELEASE,
ui::VKEY_P,
ui::EF_ALT_DOWN,
CMD_DEBUG_POWER_BUTTON_RELEASED,
AF_DEBUG},
};
AcceleratorManager::Get()->RegisterAccelerators(
accelerator_data, arraysize(accelerator_data), this);
}
int PowerButtonController::SetPowerButtonTimeoutMsForTest(int timeout) {
int old_timeout = power_button_timeout_ms_;
power_button_timeout_ms_ = timeout;
return old_timeout;
}
void PowerButtonController::BrightnessChanged(int level, bool user_initiated) {
if (brightness_is_zero_)
zero_brightness_end_time_ = base::TimeTicks::Now();
brightness_is_zero_ = (level == 0);
}
void PowerButtonController::PowerButtonEventReceived(
bool down,
const base::TimeTicks& timestamp) {
// Ignore power button pressed while the screen is off
// (http://crbug.com/128451).
// TODO(oshima): This needs to be revisited for athena.
base::TimeDelta time_since_zero_brightness =
brightness_is_zero_
? base::TimeDelta()
: (base::TimeTicks::Now() - zero_brightness_end_time_);
const int kShortTimeMs = 10;
if (time_since_zero_brightness.InMilliseconds() <= kShortTimeMs)
return;
if (down) {
FOR_EACH_OBSERVER(PowerButtonObserver,
observers_,
OnPowerButtonStateChanged(PowerButtonObserver::PRESSED));
timer_.Start(FROM_HERE,
base::TimeDelta::FromMilliseconds(kLongPressTimeoutMs),
this,
&PowerButtonController::NotifyLongPress);
} else {
FOR_EACH_OBSERVER(PowerButtonObserver,
observers_,
OnPowerButtonStateChanged(PowerButtonObserver::RELEASED));
timer_.Stop();
}
}
bool PowerButtonController::IsCommandEnabled(int command_id) const {
return true;
}
bool PowerButtonController::OnAcceleratorFired(
int command_id,
const ui::Accelerator& accelerator) {
switch (command_id) {
case CMD_DEBUG_POWER_BUTTON_PRESSED:
PowerButtonEventReceived(true, base::TimeTicks());
break;
case CMD_DEBUG_POWER_BUTTON_RELEASED:
PowerButtonEventReceived(false, base::TimeTicks());
break;
}
return true;
}
void PowerButtonController::NotifyLongPress() {
FOR_EACH_OBSERVER(
PowerButtonObserver,
observers_,
OnPowerButtonStateChanged(PowerButtonObserver::LONG_PRESSED));
}
} // namespace
|
