[pitivi] project.py, mainwindow.py, ui.timeline.py: pass old, new settings in settings-changed signal

[Edward Hervey <edwardrv src gnome org>]

commit 275ba1836a15830b318a35701ad3854aee97185e
Author: Brandon Lewis <brandon_lewis berkeley edu>
Date:   Mon Oct 19 09:33:14 2009 -0700

    project.py,mainwindow.py,ui.timeline.py: pass old, new settings in settings-changed signal

 pitivi/project.py       |    5 +++--
 pitivi/ui/mainwindow.py |    6 +++---
 pitivi/ui/timeline.py   |    6 +++---
 3 files changed, 9 insertions(+), 8 deletions(-)
---
diff --git a/pitivi/project.py b/pitivi/project.py
index 1fc1ca5..fc4776e 100644
--- a/pitivi/project.py
+++ b/pitivi/project.py
@@ -63,7 +63,7 @@ class Project(Signallable, Loggable):
     """
 
     __signals__ = {
-        "settings-changed" : None,
+        "settings-changed" : ['old', 'new'],
         }
 
     def __init__(self, name="", uri=None, **kwargs):
@@ -112,8 +112,9 @@ class Project(Signallable, Loggable):
         If settings is None, the current settings will be unset
         """
         self.log("Setting %s as the project's settings", settings)
+        oldsettings = self.settings
         self.settings = settings
-        self.emit('settings-changed')
+        self.emit('settings-changed', oldsettings, settings)
 
     def unsetSettings(self, unused_settings):
         """ Remove the currently configured settings."""
diff --git a/pitivi/ui/mainwindow.py b/pitivi/ui/mainwindow.py
index ffcda41..48ca119 100644
--- a/pitivi/ui/mainwindow.py
+++ b/pitivi/ui/mainwindow.py
@@ -907,10 +907,10 @@ class PitiviMainWindow(gtk.Window, Loggable):
     project = receiver(_setProject)
 
     @handler(project, "settings-changed")
-    def _settingsChangedCb(self, project):
+    def _settingsChangedCb(self, project, old, new):
         if self.viewer.action == self.project.view_action:
-            sett = self.project.getSettings()
-            self.viewer.setDisplayAspectRatio(float(sett.videopar * sett.videowidth) / float(sett.videoheight))
+            self.viewer.setDisplayAspectRatio(float(new.videopar *
+            new.videowidth) / float(new.videoheight))
 
     def _sourceListMissingPluginsCb(self, project, uri, factory,
             details, descriptions, missingPluginsCallback):
diff --git a/pitivi/ui/timeline.py b/pitivi/ui/timeline.py
index 965b928..3366e0b 100644
--- a/pitivi/ui/timeline.py
+++ b/pitivi/ui/timeline.py
@@ -415,13 +415,13 @@ class Timeline(gtk.Table, Loggable, Zoomable):
             self._canvas.zoomChanged()
             self.ruler.setProjectFrameRate(self.project.getSettings().videorate)
             self.ruler.zoomChanged()
-            self._settingsChangedCb(self.project)
+            self._settingsChangedCb(self.project, None, self.project.getSettings())
 
     project = receiver(_setProject)
 
     @handler(project, "settings-changed")
-    def _settingsChangedCb(self, project):
-        rate = self.project.getSettings().videorate
+    def _settingsChangedCb(self, project, old, new):
+        rate = new.videorate
         self.rate = float(1 / rate)
         self.ruler.setProjectFrameRate(rate)