[pitivi] Curve: treat start of stream as left edge of clip

[Edward Hervey <edwardrv src gnome org>]

commit 69d072e30058a643d6fce3094ba3a8a09172a460
Author: Brandon Lewis <brandon_lewis berkeley edu>
Date:   Fri Jun 12 01:20:31 2009 +0200

    Curve: treat start of stream as left edge of clip

 pitivi/ui/curve.py |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/pitivi/ui/curve.py b/pitivi/ui/curve.py
index 2989627..59e7653 100644
--- a/pitivi/ui/curve.py
+++ b/pitivi/ui/curve.py
@@ -154,7 +154,7 @@ class Curve(goocanvas.ItemSimple, goocanvas.Item, View, Zoomable):
             Zoomable.nsToPixel(self.element.duration), self.height)
 
     def _getKeyframeXY(self, kf):
-        x = self.nsToPixel(kf.time)
+        x = self.nsToPixel(kf.time - self.element.in_point)
         y = kf.value * self._height
         return point.Point(x + self.bounds.x1, y + self.bounds.y1)