File indexing completed on 2024-05-12 04:19:46

0001 /*
0002 Gwenview: an image viewer
0003 Copyright 2018 Friedrich W. H. Kossebau <kossebau@kde.org>
0004 
0005 This program is free software; you can redistribute it and/or
0006 modify it under the terms of the GNU General Public License
0007 as published by the Free Software Foundation; either version 2
0008 of the License, or (at your option) any later version.
0009 
0010 This program is distributed in the hope that it will be useful,
0011 but WITHOUT ANY WARRANTY; without even the implied warranty of
0012 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
0013 GNU General Public License for more details.
0014 
0015 You should have received a copy of the GNU General Public License
0016 along with this program; if not, write to the Free Software
0017 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
0018 */
0019 
0020 #ifndef LOCKSCREENWATCHER_H
0021 #define LOCKSCREENWATCHER_H
0022 
0023 // Qt
0024 #include <QObject>
0025 
0026 class OrgFreedesktopScreenSaverInterface;
0027 class QDBusPendingCallWatcher;
0028 
0029 namespace Gwenview
0030 {
0031 class LockScreenWatcher : public QObject
0032 {
0033     Q_OBJECT
0034 
0035 public:
0036     explicit LockScreenWatcher(QObject *parent);
0037     ~LockScreenWatcher() override;
0038 
0039 public:
0040     bool isLocked() const;
0041 
0042 Q_SIGNALS:
0043     void isLockedChanged(bool locked);
0044 
0045 private:
0046     void onScreenSaverActiveChanged(bool isActive);
0047     void onActiveQueried(QDBusPendingCallWatcher *watcher);
0048     void onScreenSaverServiceOwnerChanged(const QString &serviceName, const QString &oldOwner, const QString &newOwner);
0049     void onServiceRegisteredQueried();
0050     void onServiceOwnerQueried();
0051 
0052 private:
0053     OrgFreedesktopScreenSaverInterface *mScreenSaverInterface = nullptr;
0054     bool mLocked = false;
0055 };
0056 
0057 }
0058 
0059 #endif