[gtk+] wayland: Don't emit direction-changed unless it did

[Matthias Clasen <matthiasc src gnome org>]

commit 09aa48b7485818120a31cac617be62bdeb91a23c
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue May 3 22:52:38 2016 -0400

    wayland: Don't emit direction-changed unless it did
    
    We can easily check this, so lets do it.

 gdk/wayland/gdkdevice-wayland.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)
---
diff --git a/gdk/wayland/gdkdevice-wayland.c b/gdk/wayland/gdkdevice-wayland.c
index 72d856b..71389e3 100644
--- a/gdk/wayland/gdkdevice-wayland.c
+++ b/gdk/wayland/gdkdevice-wayland.c
@@ -1568,12 +1568,17 @@ keyboard_handle_keymap (void               *data,
                         uint32_t            size)
 {
   GdkWaylandSeat *seat = data;
+  PangoDirection direction;
+
+  direction = gdk_keymap_get_direction (seat->keymap);
 
   _gdk_wayland_keymap_update_from_fd (seat->keymap, format, fd, size);
 
   g_signal_emit_by_name (seat->keymap, "keys-changed");
   g_signal_emit_by_name (seat->keymap, "state-changed");
-  g_signal_emit_by_name (seat->keymap, "direction-changed");
+
+  if (direction != gdk_keymap_get_direction (seat->keymap))
+    g_signal_emit_by_name (seat->keymap, "direction-changed");
 }
 
 static void