[gtk+] Fix up _gdk_windowing_window_at_pointer coordinate reporting

[Alexander Larsson <alexl src gnome org>]

commit 786b589d95077b465dcc2311ff2489ee7bb9a49f
Author: Alexander Larsson <alexl redhat com>
Date:   Mon Oct 5 11:39:29 2009 +0200

    Fix up _gdk_windowing_window_at_pointer coordinate reporting
    
    We need to do a final XQueryWindow to get the coordinates inside the
    windows rather than in the parent window.
    
    This fixes bug #597386, "Cannot click buttons more than once...", which
    failed due to the grab tracking stuff getting the wrong coordinates as
    per the above.

 gdk/x11/gdkwindow-x11.c |   19 +++++++++++--------
 1 files changed, 11 insertions(+), 8 deletions(-)
---
diff --git a/gdk/x11/gdkwindow-x11.c b/gdk/x11/gdkwindow-x11.c
index c65a0d4..a8dd83b 100644
--- a/gdk/x11/gdkwindow-x11.c
+++ b/gdk/x11/gdkwindow-x11.c
@@ -3252,12 +3252,15 @@ _gdk_windowing_window_at_pointer (GdkDisplay *display,
       while (xwindow)
 	{
 	  xwindow_last = xwindow;
-	  if (get_toplevel &&
-	      (window = gdk_window_lookup_for_display (display, xwindow)) != NULL &&
-	      GDK_WINDOW_TYPE (window) != GDK_WINDOW_FOREIGN)
-	    break;
 	  XQueryPointer (xdisplay, xwindow,
 			 &root, &xwindow, &rootx, &rooty, &winx, &winy, &xmask);
+	  if (get_toplevel &&
+	      (window = gdk_window_lookup_for_display (display, xwindow_last)) != NULL &&
+	      GDK_WINDOW_TYPE (window) != GDK_WINDOW_FOREIGN)
+	    {
+	      xwindow = xwindow_last;
+	      break;
+	    }
 	}
     } 
   else 
@@ -3315,16 +3318,16 @@ _gdk_windowing_window_at_pointer (GdkDisplay *display,
       while (xwindow)
 	{
 	  xwindow_last = xwindow;
-	  if (get_toplevel &&
-	      (window = gdk_window_lookup_for_display (display, xwindow)) != NULL &&
-	      GDK_WINDOW_TYPE (window) != GDK_WINDOW_FOREIGN)
-	    break;
 	  gdk_error_trap_push ();
 	  XQueryPointer (xdisplay, xwindow,
 			 &root, &xwindow, &rootx, &rooty, &winx, &winy, &xmask);
 	  gdk_flush ();
 	  if (gdk_error_trap_pop ())
 	    break;
+	  if (get_toplevel &&
+	      (window = gdk_window_lookup_for_display (display, xwindow_last)) != NULL &&
+	      GDK_WINDOW_TYPE (window) != GDK_WINDOW_FOREIGN)
+	    break;
 	}
     }