[pitivi] pitivi: Allow transitions to be resized.

[Thibault Saunier <tsaunier src gnome org>]

commit 92aafec5f1252e6502d5715ff234b9f34bb6f7b5
Author: Thibault Saunier <tsaunier gnome org>
Date:   Mon Jun 1 10:17:00 2015 +0200

    pitivi: Allow transitions to be resized.
    
    Adding handles on them
    
    Fixes http://phabricator.freedesktop.org/T80

 pitivi/mainwindow.py        |    2 +-
 pitivi/timeline/elements.py |   16 +++++++++++++++-
 pitivi/viewer.py            |    2 +-
 3 files changed, 17 insertions(+), 3 deletions(-)
---
diff --git a/pitivi/mainwindow.py b/pitivi/mainwindow.py
index 95d58e5..6c2f67a 100644
--- a/pitivi/mainwindow.py
+++ b/pitivi/mainwindow.py
@@ -585,7 +585,7 @@ class PitiviMainWindow(Gtk.ApplicationWindow, Loggable):
         self._saveProjectCb(None, None)
 
     def saveProjectAsDialog(self):
-        sellf._saveProjectAsCb(None, None)
+        self._saveProjectAsCb(None, None)
 
     def _revertToSavedProjectCb(self, unused_action):
         return self.app.project_manager.revertToSavedProject()
diff --git a/pitivi/timeline/elements.py b/pitivi/timeline/elements.py
index 8429286..bdc7952 100644
--- a/pitivi/timeline/elements.py
+++ b/pitivi/timeline/elements.py
@@ -845,7 +845,21 @@ class TransitionClip(Clip):
         self.bClip.connect("child-added", self._childAddedCb)
 
         # In the case of TransitionClips, we are the only container
-        self._elements_container = self
+        overlay = Gtk.Overlay()
+        self.add(overlay)
+
+        self._elements_container = Gtk.Box.new(Gtk.Orientation.VERTICAL, 2)
+        overlay.add_overlay(self._elements_container)
+
+        self.leftHandle = TrimHandle(self, GES.Edge.EDGE_START)
+        overlay.add_overlay(self.leftHandle)
+
+        self.rightHandle = TrimHandle(self, GES.Edge.EDGE_END)
+        overlay.add_overlay(self.rightHandle)
+
+        self.handles.append(self.leftHandle)
+        self.handles.append(self.rightHandle)
+
         self.set_tooltip_markup("<span>%s</span>" %
                                 str(bClip.props.vtype.value_nick))
 
diff --git a/pitivi/viewer.py b/pitivi/viewer.py
index 241f31a..eff8627 100644
--- a/pitivi/viewer.py
+++ b/pitivi/viewer.py
@@ -415,7 +415,7 @@ class ViewerContainer(Gtk.Box, Loggable):
         """
         While a clip is being trimmed, show a live preview of it.
         """
-        if isinstance(clip, GES.TitleClip) or clip.props.is_image or not hasattr(clip, "get_uri"):
+        if not hasattr(clip, "get_uri") or isinstance(clip, GES.TitleClip) or clip.props.is_image:
             self.log(
                 "%s is an image or has no URI, so not previewing trim" % clip)
             return False