[f-spot] Fix Screensaver inhibit/uninhibit

[Stephen Shaw <sshaw src gnome org>]

commit 08e2f32bca371cc535538b6fca249893d0ce5b40
Author: Stephen Shaw <sshaw decriptor com>
Date:   Mon Dec 5 16:55:07 2011 -0700

    Fix Screensaver inhibit/uninhibit
    
    This is more or less gone in gnome 3, but it had
    been moved before frome org.gnome.ScreenSaver to
    org.gnome.SessionManager.  So to at least prevent
    crashes this change is needed.

 .../FSpot.Platform/FSpot.Platform/ScreenSaver.cs   |   15 ++++++++++-----
 1 files changed, 10 insertions(+), 5 deletions(-)
---
diff --git a/src/Core/FSpot.Platform/FSpot.Platform/ScreenSaver.cs b/src/Core/FSpot.Platform/FSpot.Platform/ScreenSaver.cs
index 166c18a..b4e6742 100644
--- a/src/Core/FSpot.Platform/FSpot.Platform/ScreenSaver.cs
+++ b/src/Core/FSpot.Platform/FSpot.Platform/ScreenSaver.cs
@@ -3,6 +3,7 @@
 //
 // Author:
 //   Stephane Delcroix <sdelcroix src gnome org>
+//   Stephen Shaw <sshaw decriptor com>
 //
 // Copyright (C) 2007-2009 Novell, Inc.
 // Copyright (C) 2007-2009 Stephane Delcroix
@@ -36,27 +37,31 @@ using Hyena;
 
 namespace FSpot.Platform
 {
-	[Interface ("org.gnome.ScreenSaver")]
+	[Interface ("org.gnome.SessionManager")]
 	public interface IScreenSaver
 	{
-		uint Inhibit (string appname, string reason);
+		uint Inhibit (string appname, uint toplevel_xid, string reason, uint flags);
 		void UnInhibit (uint cookie);
-		void Lock ();
 	}
 
 	public static class ScreenSaver
 	{
+		const string DBUS_INTERFACE = "org.gnome.SessionManager";
+		const string DBUS_PATH = "/org/gnome/SessionManager";
 		private static IScreenSaver screensaver;
 		private static IScreenSaver GnomeScreenSaver {
 			get {
 				if (screensaver == null)
-					screensaver = Bus.Session.GetObject<IScreenSaver> ("org.gnome.ScreenSaver", new ObjectPath ("/org/gnome/ScreenSaver"));
+					screensaver = Bus.Session.GetObject<IScreenSaver> (DBUS_INTERFACE, new ObjectPath (DBUS_PATH));
 				return screensaver;
 			}
 		}
 
 		private static bool inhibited = false;
 		private static uint cookie = 0;
+		private static uint toplevel_xid = 0;
+		// 8: Inhibit the session being marked as idle
+		private static uint flags = 8;
 
 		public static uint Inhibit (string reason ) {
 			if (inhibited)
@@ -64,7 +69,7 @@ namespace FSpot.Platform
 
 			Log.InformationFormat ("Inhibit screensaver for {0}", reason);
 			try {
-				cookie = GnomeScreenSaver.Inhibit ("f-spot", reason);
+				cookie = GnomeScreenSaver.Inhibit ("f-spot", toplevel_xid, reason, flags);
 				inhibited = true;
 			} catch (Exception ex) {
 				Log.Exception ("Error Inhibiting the screensaver", ex);