d8b6fbfef0
Don’t do the fgOSDisableScreensave DBus stuff on macOS - there is no global DBus daemon configured by default.
66 lines
3.7 KiB
C++
66 lines
3.7 KiB
C++
// screensaver_control.cxx -- disable the screensaver
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//
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// Written by Rebecca Palmer, December 2013.
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//
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// Copyright (C) 2013 Rebecca Palmer
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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//
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// $Id$
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#include <config.h>
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#include <simgear/compiler.h>
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#ifdef HAVE_DBUS
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#include <dbus/dbus.h>//Uses the low-level libdbus rather than GDBus/QtDBus to avoid adding more dependencies than necessary. http://dbus.freedesktop.org/doc/api/html/index.html
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#endif
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/** Attempt to disable the screensaver.
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*
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* Screensavers/powersavers often do not monitor the joystick, and it is hence advisable to disable them while FlightGear is running.
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* This function always exists, but currently only actually does anything on Linux, where it will disable gnome-screensaver/kscreensaver until FlightGear exits.
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*
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* The following might be useful to anyone wishing to add Windows support:
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* http://msdn.microsoft.com/en-us/library/windows/desktop/aa373233%28v=vs.85%29.aspx
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* http://msdn.microsoft.com/en-us/library/windows/desktop/aa373208%28v=vs.85%29.aspx (While this documentation says it only disables powersave, it is elsewhere reported to also disable screensaver)
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* http://msdn.microsoft.com/en-us/library/windows/desktop/dd405534%28v=vs.85%29.aspx
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*/
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void fgOSDisableScreensaver()
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{
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#if defined(HAVE_DBUS) && defined(SG_UNIX) && !defined(SG_MAC)
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DBusConnection *dbus_connection;
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DBusMessage *dbus_inhibit_screenlock;
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unsigned int window_id=1000;//fake-it doesn't seem to care
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unsigned int inhibit_idle=8;//8=idle inhibit flag
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const char *app_name="org.flightgear";
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const char *inhibit_reason="Uses joystick input";
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dbus_connection=dbus_bus_get(DBUS_BUS_SESSION,NULL);
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dbus_connection_set_exit_on_disconnect(dbus_connection,FALSE);//Don't close us if we lose the DBus connection
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//Two possible interfaces; we send on both, as that is easier than trying to determine which will work
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//GNOME: https://people.gnome.org/~mccann/gnome-session/docs/gnome-session.html
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dbus_inhibit_screenlock=dbus_message_new_method_call("org.gnome.SessionManager","/org/gnome/SessionManager","org.gnome.SessionManager","Inhibit");
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dbus_message_append_args(dbus_inhibit_screenlock,DBUS_TYPE_STRING,&app_name,DBUS_TYPE_UINT32,&window_id,DBUS_TYPE_STRING,&inhibit_reason,DBUS_TYPE_UINT32,&inhibit_idle,DBUS_TYPE_INVALID);
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dbus_connection_send(dbus_connection,dbus_inhibit_screenlock,NULL);
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//KDE, GNOME 3.6+: http://standards.freedesktop.org/idle-inhibit-spec/0.1/re01.html
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dbus_inhibit_screenlock=dbus_message_new_method_call("org.freedesktop.ScreenSaver","/ScreenSaver","org.freedesktop.ScreenSaver","Inhibit");
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dbus_message_append_args(dbus_inhibit_screenlock,DBUS_TYPE_STRING,&app_name,DBUS_TYPE_STRING,&inhibit_reason,DBUS_TYPE_INVALID);
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dbus_connection_send(dbus_connection,dbus_inhibit_screenlock,NULL);
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dbus_connection_flush(dbus_connection);
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//Currently ignores the reply; it would need to read it if we wanted to determine whether we've succeeded and/or allow explicitly re-enabling the screensaver
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//Don't disconnect, that ends the inhibition
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#endif
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}
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