src/gui/powermanagement/powermanagement_x11.h

   1 /*
   2  * Bittorrent Client using Qt and libtorrent.
   3  * Copyright (C) 2011  Vladimir Golovnev <glassez@yandex.ru>
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; either version 2
   8  * of the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  18  *
  19  * In addition, as a special exception, the copyright holders give permission to
  20  * link this program with the OpenSSL project's "OpenSSL" library (or with
  21  * modified versions of it that use the same license as the "OpenSSL" library),
  22  * and distribute the linked executables. You must obey the GNU General Public
  23  * License in all respects for all of the code used other than "OpenSSL".  If you
  24  * modify file(s), you may extend this exception to your version of the file(s),
  25  * but you are not obligated to do so. If you do not wish to do so, delete this
  26  * exception statement from your version.
  27  */
  28
  29 #pragma once
  30
  31 #include <QDBusUnixFileDescriptor>
  32 #include <QObject>
  33
  34 class QDBusInterface;
  35 class QDBusPendingCallWatcher;
  36
  37 class PowerManagementInhibitor final : public QObject
  38 {
  39     Q_OBJECT
  40     Q_DISABLE_COPY_MOVE(PowerManagementInhibitor)
  41
  42 public:
  43     PowerManagementInhibitor(QObject *parent = nullptr);
  44     ~PowerManagementInhibitor() override = default;
  45
  46     void requestIdle();
  47     void requestBusy();
  48
  49 private slots:
  50     void onAsyncReply(QDBusPendingCallWatcher *call);
  51
  52 private:
  53     enum State
  54     {
  55         Error,
  56         Idle,
  57         RequestBusy,
  58         Busy,
  59         RequestIdle
  60     };
  61
  62     enum class ManagerType
  63     {
  64         Freedesktop,  // https://www.freedesktop.org/wiki/Specifications/power-management-spec/
  65         Gnome,  // https://github.com/GNOME/gnome-settings-daemon/blob/master/gnome-settings-daemon/org.gnome.SessionManager.xml
  66         Systemd // https://www.freedesktop.org/software/systemd/man/org.freedesktop.login1.html
  67     };
  68
  69     QDBusInterface *m_busInterface = nullptr;
  70     ManagerType m_manager = ManagerType::Gnome;
  71
  72     enum State m_state = Error;
  73     enum State m_intendedState = Idle;
  74     uint m_cookie = 0;
  75     QDBusUnixFileDescriptor m_fd;
  76 };