Difference in font layout heights?

[Lars Clausen <lrclause cs uiuc edu>]

In working on using a TextView widget for editing text in Dia, I notice
that there's a significant difference in the height of multi-line text,
about 12%.  We use the FT2 backend for internal Dia rendering, but the
TextView of course uses either the gdk renderer or xft, depending on the
GDK_USE_XFT setting.  The length of the text is unaffected.  We use
pango_ft2_render_layout to do the whole rendering, while GtkTextView uses
gtk_text_layout_draw, which does line-by-line rendering.  Is the line space
wrong in one or the other of these?

Thanks,
-Lars

-- 
Lars Clausen (http://shasta.cs.uiuc.edu/~lrclause)| Hårdgrim of Numenor
"I do not agree with a word that you say, but I   |----------------------------
will defend to the death your right to say it."   | Where are we going, and
    --Evelyn Beatrice Hall paraphrasing Voltaire  | what's with the handbasket?