[mutter] core: enable XInput2 by default

[Jasper St. Pierre <jstpierre src gnome org>]

commit 946a42f13e00ad63b09b3e153bafbf9a39a01690
Author: Carlos Garnacho <carlosg gnome org>
Date:   Sat Jul 9 18:49:35 2011 +0200

    core: enable XInput2 by default
    
    Enable XI2 support in both Clutter and GDK.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=688779

 src/core/main.c |    4 +++-
 src/ui/ui.c     |    8 --------
 2 files changed, 3 insertions(+), 9 deletions(-)
---
diff --git a/src/core/main.c b/src/core/main.c
index 00f36ed..cd4e619 100644
--- a/src/core/main.c
+++ b/src/core/main.c
@@ -301,9 +301,11 @@ static GSourceFuncs event_funcs = {
 static void
 meta_clutter_init (void)
 {
+  clutter_x11_enable_xinput ();
+
   clutter_x11_set_display (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()));
   clutter_x11_disable_event_retrieval ();
-  
+
   if (CLUTTER_INIT_SUCCESS == clutter_init (NULL, NULL))
     {
       GSource *source = g_source_new (&event_funcs, sizeof (GSource));
diff --git a/src/ui/ui.c b/src/ui/ui.c
index 9335e18..097b204 100644
--- a/src/ui/ui.c
+++ b/src/ui/ui.c
@@ -60,14 +60,6 @@ struct _MetaUI
 void
 meta_ui_init (void)
 {
-  /* As of 2.91.7, Gdk uses XI2 by default, which conflicts with the
-   * direct X calls we use - in particular, events caused by calls to
-   * XGrabPointer/XGrabKeyboard are no longer understood by GDK, while
-   * GDK will no longer generate the core XEvents we process.
-   * So at least for now, enforce the previous behavior.
-   */
-  gdk_disable_multidevice ();
-
   if (!gtk_init_check (NULL, NULL))
     meta_fatal ("Unable to open X display %s\n", XDisplayName (NULL));