[pitivi/gtktimeline] elements: Ignore ENTER/LEAVE events with a corssing mode to show/hide handles

[Thibault Saunier <tsaunier src gnome org>]

commit 20d24de0fb0386b1ce803c29c04f9ba458a58da8
Author: Thibault Saunier <tsaunier gnome org>
Date:   Tue May 5 18:18:39 2015 +0200

    elements: Ignore ENTER/LEAVE events with a corssing mode to show/hide handles
    
    We want to show/hide the handles only when the ENTER_NOTIFY or LEAVE_NOTIFY
    event are created because the mouse enter/leave the widget, meaning
    event.mode == Gdk.CrossingMode.NORMAL
    
    Fixes T56

 pitivi/timeline/elements.py |   10 ++++++----
 1 files changed, 6 insertions(+), 4 deletions(-)
---
diff --git a/pitivi/timeline/elements.py b/pitivi/timeline/elements.py
index 13668fe..456a09e 100644
--- a/pitivi/timeline/elements.py
+++ b/pitivi/timeline/elements.py
@@ -696,11 +696,13 @@ class Clip(Gtk.EventBox, timelineUtils.Zoomable, Loggable):
 
     def _eventCb(self, element, event):
         if event.type == Gdk.EventType.ENTER_NOTIFY:
-            ui.set_children_state_recurse(self, Gtk.StateFlags.PRELIGHT)
-            self.__showHandles()
+            if event.mode == Gdk.CrossingMode.NORMAL:
+                ui.set_children_state_recurse(self, Gtk.StateFlags.PRELIGHT)
+                self.__showHandles()
         elif event.type == Gdk.EventType.LEAVE_NOTIFY:
-            ui.unset_children_state_recurse(self, Gtk.StateFlags.PRELIGHT)
-            self.__hideHandles()
+            if event.mode == Gdk.CrossingMode.NORMAL:
+                ui.unset_children_state_recurse(self, Gtk.StateFlags.PRELIGHT)
+                self.__hideHandles()
 
         return False