Text at a certain width

["Lars Ræder" <larsrc gmail com>]

Hi!

In Dia, we render text with Pango, and typically the text is within
boxes just big enough to fit the text.  This means that when
zooming in and out, we want the text to be rendered with the same
relative width, i.e. stretching or compressing it a little when font
scaling isn't linear.  How can we do that with Pango? 

There's mention in pango_layout_set_justify (which would somewhat solve
it) that it's not implemented in 1.10.  Am I missing some other
way to set the width?  This functionality is critical to the looks
and performance of Dia -- currently we tweak the font size every time
we render a string at non-100% zoom, which is *horribly* slow, but
works.  I may have to give damn-all about the good looks and just
stretch the rendered bitmap.  I don't really care if it looks a
little funny in certain fonts, as long as it looks reasonable in the
most frequently used cases.  

-Lars