Unity 8
Powerd.h
1 /*
2  * Copyright (C) 2012,2013 Canonical, Ltd.
3  *
4  * This program is free software; you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License as published by
6  * the Free Software Foundation; version 3.
7  *
8  * This program is distributed in the hope that it will be useful,
9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11  * GNU General Public License for more details.
12  *
13  * You should have received a copy of the GNU General Public License
14  * along with this program. If not, see <http://www.gnu.org/licenses/>.
15  *
16  * Authors: Gerry Boland <gerry.boland@canonical.com>
17  * Michael Terry <michael.terry@canonical.com>
18  */
19 
20 #ifndef UNITY_POWERD_H
21 #define UNITY_POWERD_H
22 
23 #include <gio/gio.h>
24 #include <QtCore/QObject>
25 #include <QtDBus/QDBusInterface>
26 
27 class Powerd: public QObject
28 {
29  Q_OBJECT
30  Q_ENUMS(Status)
31  Q_ENUMS(DisplayStateChangeReason)
32  Q_PROPERTY(Status status READ status NOTIFY statusChanged)
33 
34 public:
35  enum DisplayStateChangeReason {
36  Unknown = 0,
37  Inactivity = 1, // Display changed state due to inactivity
38  PowerKey = 2, // Display changed state due to user pressing power key
39  Proximity = 3, // Display changed state due to proximity events
40  Notification = 4, // Display changed state due to user notification
41  };
42 
43  enum Status {
44  Off,
45  On,
46  };
47 
48  explicit Powerd(QObject *parent = 0);
49  ~Powerd();
50 
51  Status status() const;
52 
53  // Not exposed via Q_PROPERTY because we need the 'reason' argument too
54  Q_INVOKABLE void setStatus(Status status, DisplayStateChangeReason reason);
55 
56 Q_SIGNALS:
57  void statusChanged(DisplayStateChangeReason reason);
58 
59 private Q_SLOTS:
60  void handleDisplayPowerStateChange(int status, int reason);
61 
62 private:
63  QDBusInterface *unityScreen;
64  GSettings *systemSettings;
65  Status cachedStatus;
66 };
67 
68 #endif