[Pkg-fonts-devel] Bug#409472: ttf-dejavu: Condensed fonts not
benlaenen at gmail.com
Sun Feb 4 13:48:44 CET 2007
> I have also a laptop running sid, and kde. I am able to use DejaVu
> Serif Condensed font. I don't fully understand why desktop is unable
> to use the font.
> Please advise.
Two possible causes:
* you're using an old DejaVu version (< 2.9)
* you're not using the newest fontconfig (2.4.2).
The reason why:
we set in DejaVu 2.9 the so called "preferred family" and "preferred
subfamily" tags. That didn't really affect anyone back then since there
was nothing that supported it in the Linux world. The idea behind these
preferred families is that some environments only support four styles
of the same font (regular, italic, bold and bold italic). Any other
style that would belong to that family cannot be accessed. Hence we
have two different "family" names for the normal and the condensed
example in dejavu:
sans book: family: dejavu sans; subfamily: book
sans condensed book: family: dejavu condensed sans; subfamily: book
However, more advanced programs can handle more than four font styles,
so you want to be able to tell in a font that condensed fonts are
really from the same family as the regular ones. That's why "preferred
family/subfamily" was added: these ones have the names advanced
programs should use.
example in dejavu:
sans book: pref. family: dejavu sans; pref. subfamily: book
sans condensed book: pref. family: dejavu sans; pref. subfamily:
As said, no-one probably noticed these new tags until fontconfig 2.4.2
came out: fontconfig now suddenly started using the preferred families
of a font. Which had the consequence that all software depending on
fontconfig now all saw the condensed sans fonts in the one big "dejavu
Now, unfortunately Qt (and thus also KDE) doesn't support condensed
fonts variants in the same family. Consequence: no condensed fonts from
dejavu in KDE anymore.
So after this little history, the possible solutions if you want to have
* fix Qt -- the only proper way, but the most difficult one of course.
* patch fontconfig to disable preferred families, bug #401411 can help,
but then you'll disable them for all other fonts and for gnome (which
supports more styles in the same font a little bit better)
* or just don't upgrade to fontconfig 2.4.2 and keep using 2.4.1
* patch DejaVu to remove the preferred family tags.
I hope this clarifies the complete situation about this and explains why
people get different results sometimes.
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