[pitivi: 2/20] ui.trackobject.py: activate roll mode when shift is held down during drag

[Edward Hervey <edwardrv src gnome org>]

commit 8b6c6fbf9087c74ad612ba02fb46003fcfd3bbb7
Author: Brandon Lewis <brandon_lewis berkeley edu>
Date:   Mon Jul 6 23:34:06 2009 -0700

    ui.trackobject.py: activate roll mode when shift is held down during drag

 pitivi/ui/trackobject.py |   15 +++++++++++++++
 1 files changed, 15 insertions(+), 0 deletions(-)
---
diff --git a/pitivi/ui/trackobject.py b/pitivi/ui/trackobject.py
index e75b021..99db222 100644
--- a/pitivi/ui/trackobject.py
+++ b/pitivi/ui/trackobject.py
@@ -116,8 +116,17 @@ class TimelineController(controller.Controller):
         x, y = pos
         position = Zoomable.pixelToNs(x)
         priority = int((y - self._y_offset) // (LAYER_HEIGHT_EXPANDED + LAYER_SPACING))
+        self._context.setMode(self._getMode())
         self._context.editTo(position, priority)
 
+    def _getMode(self):
+        s = self._last_event.get_state()
+        if s & gtk.gdk.SHIFT_MASK:
+            return self._context.RIPPLE
+        elif s & gtk.gdk.CONTROL_MASK:
+            return self._context.ROLL
+        return self._context.DEFAULT
+
 class TrimHandle(View, goocanvas.Image, Zoomable):
 
     """A component of a TrackObject which manage's the source's edit
@@ -186,6 +195,12 @@ class TrackObject(View, goocanvas.Group, Zoomable):
                 self._view.timeline.selection.getSelectedTrackObjs())
             self._view.app.action_log.begin("move object")
 
+        def _getMode(self):
+            s = self._last_event.get_state()
+            if s & gtk.gdk.SHIFT_MASK:
+                return self._context.RIPPLE
+            return self._context.DEFAULT
+
         def click(self, pos):
             mode = SELECT
             if self._last_event.get_state() & gtk.gdk.SHIFT_MASK: