[gtk+] gtk: Only set widget under device on non-virtual crossing events

[Matthias Clasen <matthiasc src gnome org>]

commit 18e4a3a4a1a0916dca45712e0e8b65a1316f798f
Author: Carlos Garnacho <carlosg gnome org>
Date:   Tue Dec 6 20:20:39 2011 +0100

    gtk: Only set widget under device on non-virtual crossing events
    
    _gtk_widget_set_device_window() is suppose to make accounting of
    the topmost widget under the device at each time, so avoid setting
    it on virtual crossing events as the device is already in another
    window.

 gtk/gtkmain.c |   16 ++++++++++------
 1 files changed, 10 insertions(+), 6 deletions(-)
---
diff --git a/gtk/gtkmain.c b/gtk/gtkmain.c
index e8a15b4..9626569 100644
--- a/gtk/gtkmain.c
+++ b/gtk/gtkmain.c
@@ -1688,17 +1688,21 @@ gtk_main_do_event (GdkEvent *event)
       break;
 
     case GDK_ENTER_NOTIFY:
-      _gtk_widget_set_device_window (event_widget,
-                                     gdk_event_get_device (event),
-                                     event->any.window);
+      if (event->crossing.detail != GDK_NOTIFY_VIRTUAL &&
+          event->crossing.detail != GDK_NOTIFY_NONLINEAR_VIRTUAL)
+        _gtk_widget_set_device_window (event_widget,
+                                       gdk_event_get_device (event),
+                                       event->any.window);
       if (gtk_widget_is_sensitive (grab_widget))
         gtk_widget_event (grab_widget, event);
       break;
 
     case GDK_LEAVE_NOTIFY:
-      _gtk_widget_set_device_window (event_widget,
-                                     gdk_event_get_device (event),
-                                     NULL);
+      if (event->crossing.detail != GDK_NOTIFY_VIRTUAL &&
+          event->crossing.detail != GDK_NOTIFY_NONLINEAR_VIRTUAL)
+        _gtk_widget_set_device_window (event_widget,
+                                       gdk_event_get_device (event),
+                                       NULL);
       if (gtk_widget_is_sensitive (grab_widget))
         gtk_widget_event (grab_widget, event);
       break;