1 /****************************************************************************
2 **
3 ** Copyright (C) 2014 BogDan Vatra <bogdan@kde.org>
4 ** Contact: https://www.qt.io/licensing/
5 **
6 ** This file is part of the plugins of the Qt Toolkit.
7 **
8 ** $QT_BEGIN_LICENSE:LGPL$
9 ** Commercial License Usage
10 ** Licensees holding valid commercial Qt licenses may use this file in
11 ** accordance with the commercial license agreement provided with the
12 ** Software or, alternatively, in accordance with the terms contained in
13 ** a written agreement between you and The Qt Company. For licensing terms
14 ** and conditions see https://www.qt.io/terms-conditions. For further
15 ** information use the contact form at https://www.qt.io/contact-us.
16 **
17 ** GNU Lesser General Public License Usage
18 ** Alternatively, this file may be used under the terms of the GNU Lesser
19 ** General Public License version 3 as published by the Free Software
20 ** Foundation and appearing in the file LICENSE.LGPL3 included in the
21 ** packaging of this file. Please review the following information to
22 ** ensure the GNU Lesser General Public License version 3 requirements
23 ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
24 **
25 ** GNU General Public License Usage
26 ** Alternatively, this file may be used under the terms of the GNU
27 ** General Public License version 2.0 or (at your option) the GNU General
28 ** Public license version 3 or any later version approved by the KDE Free
29 ** Qt Foundation. The licenses are as published by the Free Software
30 ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
31 ** included in the packaging of this file. Please review the following
32 ** information to ensure the GNU General Public License requirements will
33 ** be met: https://www.gnu.org/licenses/gpl-2.0.html and
34 ** https://www.gnu.org/licenses/gpl-3.0.html.
35 **
36 ** $QT_END_LICENSE$
37 **
38 ****************************************************************************/
39 
40 #ifndef QANDROIDEVENTDISPATCHER_H
41 #define QANDROIDEVENTDISPATCHER_H
42 
43 #include <QtCore/QMutex>
44 #include <QtCore/QSemaphore>
45 #include <QtEventDispatcherSupport/private/qunixeventdispatcher_qpa_p.h>
46 
47 class QAndroidEventDispatcher : public QUnixEventDispatcherQPA
48 {
49     Q_OBJECT
50 public:
51     explicit QAndroidEventDispatcher(QObject *parent = 0);
52     ~QAndroidEventDispatcher();
53     void start();
54     void stop();
55 
56     void goingToStop(bool stop);
57 
58 protected:
59     bool processEvents(QEventLoop::ProcessEventsFlags flags) override;
60 
61 private:
62     QAtomicInt m_stopRequest;
63     QAtomicInt m_goingToStop;
64     QSemaphore m_semaphore;
65 };
66 
67 class QAndroidEventDispatcherStopper
68 {
69 public:
70     static QAndroidEventDispatcherStopper *instance();
stopped()71     static bool stopped() {return !instance()->m_started.loadRelaxed(); }
72     void startAll();
73     void stopAll();
74     void addEventDispatcher(QAndroidEventDispatcher *dispatcher);
75     void removeEventDispatcher(QAndroidEventDispatcher *dispatcher);
76     void goingToStop(bool stop);
77 
78 private:
79     QMutex m_mutex;
80     QAtomicInt m_started = 1;
81     QVector<QAndroidEventDispatcher *> m_dispatchers;
82 };
83 
84 
85 #endif // QANDROIDEVENTDISPATCHER_H
86