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powermanagement.h
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1 /*
2  Copyright 2006-2007 Kevin Ottens <ervin@kde.org>
3 
4  This library is free software; you can redistribute it and/or
5  modify it under the terms of the GNU Lesser General Public
6  License as published by the Free Software Foundation; either
7  version 2.1 of the License, or (at your option) version 3, or any
8  later version accepted by the membership of KDE e.V. (or its
9  successor approved by the membership of KDE e.V.), which shall
10  act as a proxy defined in Section 6 of version 3 of the license.
11 
12  This library is distributed in the hope that it will be useful,
13  but WITHOUT ANY WARRANTY; without even the implied warranty of
14  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  Lesser General Public License for more details.
16 
17  You should have received a copy of the GNU Lesser General Public
18  License along with this library. If not, see <http://www.gnu.org/licenses/>.
19 */
20 
21 #ifndef SOLID_POWERMANAGEMENT_H
22 #define SOLID_POWERMANAGEMENT_H
23 
24 #include <QtCore/QObject>
25 #include <QtCore/QSet>
26 
27 #include <solid/solid_export.h>
28 
29 namespace Solid
30 {
42  namespace PowerManagement
43  {
51  enum SleepState { StandbyState = 1, SuspendState = 2, HibernateState = 4 };
52 
60  SOLID_EXPORT bool appShouldConserveResources();
61 
62 
70  SOLID_EXPORT QSet<SleepState> supportedSleepStates();
71 
79  SOLID_EXPORT void requestSleep(SleepState state, QObject *receiver, const char *member);
80 
91  SOLID_EXPORT int beginSuppressingSleep(const QString &reason = QString());
92 
99  SOLID_EXPORT bool stopSuppressingSleep(int cookie);
100 
113  SOLID_EXPORT int beginSuppressingScreenPowerManagement(const QString &reason = QString());
114 
125  SOLID_EXPORT bool stopSuppressingScreenPowerManagement(int cookie);
126 
127  class SOLID_EXPORT Notifier : public QObject
128  {
129  Q_OBJECT
130  Q_SIGNALS:
137  void appShouldConserveResourcesChanged(bool newState);
138 
145  void resumingFromSuspend();
146 
147  protected:
148  Notifier();
149  };
150 
151  SOLID_EXPORT Notifier *notifier();
152  }
153 }
154 
155 #endif
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