xbmc/windowing/linux/OSScreenSaverFreedesktop.cpp

   1 /*
   2  *  Copyright (C) 2017-2018 Team Kodi
   3  *  This file is part of Kodi - https://kodi.tv
   4  *
   5  *  SPDX-License-Identifier: GPL-2.0-or-later
   6  *  See LICENSES/README.md for more information.
   7  */
   8
   9 #include "OSScreenSaverFreedesktop.h"
  10
  11 #include "CompileInfo.h"
  12 #include "guilib/LocalizeStrings.h"
  13 #include "utils/log.h"
  14
  15 #include "platform/linux/DBusMessage.h"
  16 #include "platform/linux/DBusUtil.h"
  17
  18 using namespace KODI::WINDOWING::LINUX;
  19
  20 namespace
  21 {
  22 const std::string SCREENSAVER_OBJECT = "/org/freedesktop/ScreenSaver";
  23 const std::string SCREENSAVER_INTERFACE = "org.freedesktop.ScreenSaver";
  24 }
  25
  26 bool COSScreenSaverFreedesktop::IsAvailable()
  27 {
  28   // Test by making a call to a function without side-effects
  29   CDBusMessage dummyMessage(SCREENSAVER_INTERFACE, SCREENSAVER_OBJECT, SCREENSAVER_INTERFACE, "GetActive");
  30   CDBusError error;
  31   dummyMessage.SendSession(error);
  32   // We do not care whether GetActive() is actually supported, we're just checking for the name to be there
  33   // (GNOME for example does not support GetActive)
  34   return !error || error.Name() == DBUS_ERROR_NOT_SUPPORTED;
  35 }
  36
  37 void COSScreenSaverFreedesktop::Inhibit()
  38 {
  39   if (m_inhibited)
  40   {
  41     return;
  42   }
  43
  44   CDBusMessage inhibitMessage(SCREENSAVER_INTERFACE, SCREENSAVER_OBJECT, SCREENSAVER_INTERFACE, "Inhibit");
  45   inhibitMessage.AppendArguments(std::string(CCompileInfo::GetAppName()),
  46                                  g_localizeStrings.Get(14086));
  47   if (!inhibitMessage.SendSession())
  48   {
  49     // DBus call failed
  50     CLog::Log(LOGERROR, "Inhibiting freedesktop screen saver failed");
  51     return;
  52   }
  53
  54   if (!inhibitMessage.GetReplyArguments(&m_cookie))
  55   {
  56     CLog::Log(LOGERROR, "Could not retrieve cookie from org.freedesktop.ScreenSaver Inhibit response");
  57     return;
  58   }
  59
  60   m_inhibited = true;
  61 }
  62
  63 void COSScreenSaverFreedesktop::Uninhibit()
  64 {
  65   if (!m_inhibited)
  66   {
  67     return;
  68   }
  69
  70   CDBusMessage uninhibitMessage(SCREENSAVER_INTERFACE, SCREENSAVER_OBJECT, SCREENSAVER_INTERFACE, "UnInhibit");
  71   uninhibitMessage.AppendArgument(m_cookie);
  72   if (!uninhibitMessage.SendSession())
  73   {
  74     CLog::Log(LOGERROR, "Uninhibiting freedesktop screen saver failed");
  75   }
  76
  77   m_inhibited = false;
  78 }