Show a progressbar while creating a tarball for exporting
Submitted by Jeff F.T.
Assigned to Jeff F.T.
For small files there is no problem, but when you're exporting a project that has a lot of clips or heavy files (multi-hundred-megabytes for example), the UI will lock up during the tarballing operation.
Ideally, this should be threaded (ask the gobject mainloop to keep running? Maybe see the "20. The GTK Mainloop and Threading" section of http://faq.pygtk.org )
And we should show a progressbar (in the media library like when you import clips?)
Imported from https://bugzilla.gnome.org/show_bug.cgi?id=673730