unknown-horizons/unknown-horizons — pull request #2007 by ChrisOelmueller (2013-01-24 19:56:06+00:00)
Title: Add background feature to progress bar

This is a first iteration but should still work as-is.
In particular it'd be nice to have a horizontal resize feature instead of hardcoding the exactly 100 tiles as widget size.
Bar height can be worked around using a max_size height component while not restricting width.