[pitivi] curve.py: adjust is_item_at to account for overflow

[Edward Hervey <edwardrv src gnome org>]

commit 6f48752ee0b2d2ef60cdb20dfbedabc5f3e71df8
Author: Brandon Lewis <brandon_lewis alum berkeley edu>
Date:   Wed Jan 27 12:51:29 2010 -0800

    curve.py: adjust is_item_at to account for overflow

 pitivi/ui/curve.py |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/pitivi/ui/curve.py b/pitivi/ui/curve.py
index b5cfdfd..7467ddd 100644
--- a/pitivi/ui/curve.py
+++ b/pitivi/ui/curve.py
@@ -283,8 +283,9 @@ class Curve(goocanvas.ItemSimple, goocanvas.Item, View, Zoomable):
             self._controlPoint(cr, kf)
 
     def do_simple_is_item_at(self, x, y, cr, pointer_event):
-        if (between(0, x, self.nsToPixel(self.element.duration)) and
-            between(0, y, self.height)):
+        if (between(0, x, self.visible_width) and
+            between(KW_LABEL_Y_OVERFLOW, y, self.height + 
+            KW_LABEL_Y_OVERFLOW)):
             x += self.bounds.x1
             y += self.bounds.y1
             cr.new_path()