[pitivi: 8/12] timelinecanvas.py: update playhead on zoom

[Edward Hervey <edwardrv src gnome org>]

commit 3aa0d3197cd59d4317f9ecb38647c6672490373e
Author: Brandon Lewis <brandon_lewis alum berkeley edu>
Date:   Mon Nov 30 14:48:53 2009 -0800

    timelinecanvas.py: update playhead on zoom

 pitivi/ui/timelinecanvas.py |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)
---
diff --git a/pitivi/ui/timelinecanvas.py b/pitivi/ui/timelinecanvas.py
index e92c476..fdd1426 100644
--- a/pitivi/ui/timelinecanvas.py
+++ b/pitivi/ui/timelinecanvas.py
@@ -54,7 +54,7 @@ PreferencesDialog.addNumericPreference('edgeSnapDeadband',
         "operations"),
     lower = 0)
 
-class PlayheadController(Controller):
+class PlayheadController(Controller, Zoomable):
 
     _cursor = PLAYHEAD_CURSOR
 
@@ -265,7 +265,10 @@ class TimelineCanvas(goocanvas.Canvas, Zoomable, Loggable):
 
 ## playhead implementation
 
+    position = 0
+
     def timelinePositionChanged(self, position):
+        self.position = position
         self._playhead.props.x = self.nsToPixel(position)
 
     max_duration = 0
@@ -286,6 +289,7 @@ class TimelineCanvas(goocanvas.Canvas, Zoomable, Loggable):
             self.timeline.dead_band = self.pixelToNs(
                 self.settings.edgeSnapDeadband)
             self._request_size()
+            self.timelinePositionChanged(self.position)
 
 ## settings callbacks