[mutter] MetaCursorTracker: add methods for setting the cursor visibility

[Giovanni Campagna <gcampagna src gnome org>]

commit 6327b8d15a7c72ad5faba5de0c038d0082104009
Author: Giovanni Campagna <gcampagn redhat com>
Date:   Wed Sep 4 16:56:00 2013 +0200

    MetaCursorTracker: add methods for setting the cursor visibility
    
    clutter_stage_show_cursor()/hide_cursor() only works in the X11
    backend (where someone else is in charge of showing the cursor),
    and even then, it has confusing effects when running nested wayland,
    so an abstraction layer is needed.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=707474

 src/core/meta-cursor-tracker.c |   12 ++++++++++++
 src/meta/meta-cursor-tracker.h |    2 ++
 2 files changed, 14 insertions(+), 0 deletions(-)
---
diff --git a/src/core/meta-cursor-tracker.c b/src/core/meta-cursor-tracker.c
index bfe35d5..7042951 100644
--- a/src/core/meta-cursor-tracker.c
+++ b/src/core/meta-cursor-tracker.c
@@ -294,3 +294,15 @@ meta_cursor_tracker_get_pointer (MetaCursorTracker   *tracker,
                         gdk_screen_get_root_window (gscreen),
                         NULL, (GdkModifierType*)mods);
 }
+
+void
+meta_cursor_tracker_set_pointer_visible (MetaCursorTracker *tracker,
+                                         gboolean           visible)
+{
+  if (visible)
+    XFixesShowCursor (tracker->screen->display->xdisplay,
+                      tracker->screen->xroot);
+  else
+    XFixesHideCursor (tracker->screen->display->xdisplay,
+                      tracker->screen->xroot);
+}
diff --git a/src/meta/meta-cursor-tracker.h b/src/meta/meta-cursor-tracker.h
index 8862e43..3920295 100644
--- a/src/meta/meta-cursor-tracker.h
+++ b/src/meta/meta-cursor-tracker.h
@@ -52,5 +52,7 @@ void           meta_cursor_tracker_get_pointer (MetaCursorTracker   *tracker,
                                                 int                 *x,
                                                 int                 *y,
                                                 ClutterModifierType *mods);
+void           meta_cursor_tracker_set_pointer_visible (MetaCursorTracker *tracker,
+                                                        gboolean           visible);
 
 #endif