OpenType allows weight values from 1 to 999. CSS is the one rounding those to multiples of 100 from 100 to 900. Fontconfig maps them to some range from 0 to 210 (I'm not sure there). Fontconfig also has multiple aliases for its weight value 40: extralight or ultralight, and its weight value 210: black or heavy. So applications just using those values to name variants might not match the OT names.
On Fri, Aug 3, 2012 at 10:42 AM, Alexandre Prokoudine <alexandre.prokoud...@gmail.com> wrote: > Okay, I pinged Paul via Twitter about that. Thanks for the hint! > > Alexandre > > On Fri, Aug 3, 2012 at 12:38 PM, vern adams <v...@newtypography.co.uk> wrote: >> That's right (i think) the usWeightClass in OS/2 tables must be multiples of >> 100. Source Sans Extra Light has a value of 250. The value should be 200, as >> the Light version is already 300. >> -v >> >> On 3 Aug 2012, at 09:32, Khaled Hosny <khaledho...@eglug.org> wrote: >> >> So I'd say it is a font bug (might be a FontConfig limitation as well, I >> have some vague recollection about some discussion somewhere on whether >> OS/2 weight must be multiples of 100 or not). >> >> > > > > -- > Alexandre Prokoudine > http://libregraphicsworld.org -- Denis Moyogo Jacquerye African Network for Localisation http://www.africanlocalisation.net/ Nkótá ya Kongó míbalé --- http://info-langues-congo.1sd.org/ DejaVu fonts --- http://www.dejavu-fonts.org/
