[gtk+] wayland: Make toplevels' X/Y coordinates be 0

[Carlos Garnacho <carlosg src gnome org>]

commit e206b726355d019f8ec8527e15d4fdef48408b7f
Author: Carlos Garnacho <carlosg gnome org>
Date:   Thu Aug 21 17:39:09 2014 +0200

    wayland: Make toplevels' X/Y coordinates be 0
    
    To all effects each window has its own "root" coordinates system, so set
    toplevels at 0,0 in that coordinate system, so root coordinate calculations
    are locally right.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=729215

 gdk/wayland/gdkwindow-wayland.c |    8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)
---
diff --git a/gdk/wayland/gdkwindow-wayland.c b/gdk/wayland/gdkwindow-wayland.c
index f26c3e0..0553522 100644
--- a/gdk/wayland/gdkwindow-wayland.c
+++ b/gdk/wayland/gdkwindow-wayland.c
@@ -1205,8 +1205,12 @@ gdk_window_wayland_move_resize (GdkWindow *window,
 {
   if (with_move)
     {
-      window->x = x;
-      window->y = y;
+      /* Each toplevel has in its own "root" coordinate system */
+      if (GDK_WINDOW_TYPE (window) != GDK_WINDOW_TOPLEVEL)
+        {
+          window->x = x;
+          window->y = y;
+        }
     }
 
   /* If this function is called with width and height = -1 then that means