[pitivi] application/viewer: Use GDK lock when getting/settings XID.

[Edward Hervey <edwardrv src gnome org>]

commit 34b82b70183354fcb97e44e04f8ebca842426090
Author: Edward Hervey <bilboed bilboed com>
Date:   Sat Sep 5 16:09:45 2009 +0200

    application/viewer: Use GDK lock when getting/settings XID.
    
    so yes... not only do you need to use gobject.threads_init(), but also
    gtk.gdk.threads_init() and gtk.gdk.threads_{enter|leave}.
    
    pyg* devs hate multi-threaded app developers it seems... or are scared of them.

 pitivi/application.py |    1 +
 pitivi/ui/viewer.py   |    3 +++
 2 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/pitivi/application.py b/pitivi/application.py
index 98c0bea..eb9166d 100644
--- a/pitivi/application.py
+++ b/pitivi/application.py
@@ -26,6 +26,7 @@ Main application
 import gobject
 gobject.threads_init()
 import gtk
+gtk.gdk.threads_init()
 from optparse import OptionParser
 import os
 import sys
diff --git a/pitivi/ui/viewer.py b/pitivi/ui/viewer.py
index 62f642a..95dc423 100644
--- a/pitivi/ui/viewer.py
+++ b/pitivi/ui/viewer.py
@@ -23,6 +23,7 @@
 import gobject
 import gtk
 from gtk import gdk
+gdk.threads_init()
 import gst
 
 from pitivi.action import ViewAction
@@ -476,7 +477,9 @@ class ViewerWidget(gtk.DrawingArea, Loggable):
         self.log("...")
         if self.have_set_xid:
             return
+        gtk.gdk.threads_enter()
         self.action.set_window_xid(self.window.xid)
+        gtk.gdk.threads_leave()
         self.unset_flags(gtk.DOUBLE_BUFFERED)
         self.have_set_xid = True