* \doiffontfeature
@ 2009-05-07 11:53 Wolfgang Schuster
2009-05-07 13:01 ` \doiffontfeature Hans Hagen
0 siblings, 1 reply; 3+ messages in thread
From: Wolfgang Schuster @ 2009-05-07 11:53 UTC (permalink / raw)
To: mailing list for ConTeXt users
Hi,
is it possible to check if a font has a certain feature like smallcaps?
Wolfgang
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* Re: \doiffontfeature
2009-05-07 11:53 \doiffontfeature Wolfgang Schuster
@ 2009-05-07 13:01 ` Hans Hagen
2009-05-07 13:22 ` \doiffontfeature Wolfgang Schuster
0 siblings, 1 reply; 3+ messages in thread
From: Hans Hagen @ 2009-05-07 13:01 UTC (permalink / raw)
To: mailing list for ConTeXt users
Wolfgang Schuster wrote:
> Hi,
>
> is it possible to check if a font has a certain feature like smallcaps?
\startluacode
function commands.doifelsecurrentfonthasfeature(name)
local f = fonts.ids[font.current()]
f = f and f.shared
f = f and f.otfdata
f = f and f.luatex
f = f and f.features
commands.doifelse(f and (f.gpos[name] or f.gsub[name]))
end
\stopluacode
\def\doifelsecurrentfonthasfeature#1%
{\ctxlua{commands.doifelsecurrentfonthasfeature("#1")}}
\doifelsecurrentfonthasfeature{smcp}{YES}{NO}
\doifelsecurrentfonthasfeature{crap}{YES}{NO}
\doifelsecurrentfonthasfeature{kern}{YES}{NO}
for arbitrary fonts by names is doable but tricky in the sense that we
then need to load the font which is costly
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* Re: \doiffontfeature
2009-05-07 13:01 ` \doiffontfeature Hans Hagen
@ 2009-05-07 13:22 ` Wolfgang Schuster
0 siblings, 0 replies; 3+ messages in thread
From: Wolfgang Schuster @ 2009-05-07 13:22 UTC (permalink / raw)
To: mailing list for ConTeXt users
Am 07.05.2009 um 15:01 schrieb Hans Hagen:
> Wolfgang Schuster wrote:
>> Hi,
>> is it possible to check if a font has a certain feature like
>> smallcaps?
>
> \startluacode
> function commands.doifelsecurrentfonthasfeature(name)
> local f = fonts.ids[font.current()]
> f = f and f.shared
> f = f and f.otfdata
> f = f and f.luatex
> f = f and f.features
> commands.doifelse(f and (f.gpos[name] or f.gsub[name]))
> end
> \stopluacode
>
> \def\doifelsecurrentfonthasfeature#1%
> {\ctxlua{commands.doifelsecurrentfonthasfeature("#1")}}
>
> \doifelsecurrentfonthasfeature{smcp}{YES}{NO}
> \doifelsecurrentfonthasfeature{crap}{YES}{NO}
> \doifelsecurrentfonthasfeature{kern}{YES}{NO}
Nice, I will keep this in mind.
> for arbitrary fonts by names is doable but tricky in the sense that
> we then need to load the font which is costly
Can you show me the code, this is what I'm interested in and the check
did only happen once at the begin of the document.
Wolfgang
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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