[NTG-context] Re: Number in a circle

[Wolfgang Schuster <wolfgang.schuster.lists@gmail.com>]

Kip Warner schrieb am 27.05.2024 um 19:10:
> On Mon, 2024-05-27 at 16:51 +0200, Wolfgang Schuster wrote:
>> I can't provide a circle but I can give you a box with rounded
>> corners.
>>
>> \defineframed
>>     [textcircled]
>>     [   width=1.5em,
>>        height=1.5em,
>>      location=low,
>>        corner=round,
>>        radius=.5fw,
>>        offset=none]
>>
>> \starttext
>> \dostepwiserecurse{0}{9}{1}{#1 = \textcircled{#1}\blank}
>> \stoptext
> 
> Thanks Wolfgang. I gave it a try on https://context-on-web.eu/, but it
> failed:
> 
>     Dimensions can be in units of em, ex, in, pt, pc, cm, mm, dd, cc,
>     bp, dk, or54sp; but yours is a new one! I'll assume that you meant
>     to say pt, for printer's55points. two letters.
> 
> I'm not sure what it is referring to.

TeX complains about the value ".5fw" for the radius key. Hans added last 
year the function to add new units to ConTeXt and I used it to set the 
radius to half of the width of the framed box.

Use the following version of the setup for the frame which works with 
older ConTeXt installations because it doesn't use the feature.

\defineframed
   [textcircled]
   [   width=1.5em,
      height=1.5em,
    location=low,
      corner=round,
     %radius=.5fw,
      radius=\dimexpr\framedwidth/2\relax,
      offset=none]

\starttext
\dostepwiserecurse{0}{9}{1}{#1 = \textcircled{#1}\blank}
\stoptext

Wolfgang
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