Re: Extending the black circled numbers

[nico <nicolas.marsgui@libertysurf.fr>]

On Tue, 04 Apr 2006 11:40:30 +0200, Taco Hoekwater <taco@elvenkind.com>  
wrote:

> nico wrote:
>> Hello,
>>
>> For those who know, I'm trying to have the DocBook callout mechanism  
>> with
>> context. [...]. Typically the numbers are rendered white in black
>> circle. I could use the Dingbats numbers, but it is limited to 10, so  
>> that
>> I emulated them with the following code to be able to go up to 99.
>>
>> The questions I have:
>> - Is it the right way to do it in context (do I really need metafont?
>> Simpler, smarter method?)
>
> This is pretty smart, I'd say. Of course it would be better to have an
> official font with encircled numbers for reasons of efficiency, but this
> looks pretty good and the code is quite clean so i believe you did
> well enough.

Ok, thanks.

> One remark only: if you would know that want them all the
> same size (beforehand), you can call \evalwidth only once.

I tried this, but I had a weird behaviour with size (I have the same  
behaviour with the Hans example), and the other thing is that the size to  
use depends on the environment where you are. In the verbatim text (where  
I ask small font) the circled numbers must be smaller than in the current  
text flow.

>> - What should I do to make them as anchors, so that it can be
>> cross-referenced (I mean, one can click on a hot spot that jump to the
>> number in the verbatim text).
>
> Like this maybe:
>
>    \def\markline#1%
>      {\conum{#1}%
>       \expanded{\textreference[line#1]{\noexpand\conum{#1}}}}
>    \def\refline#1{\in{line }[line#1]}
>
>    \dorecurse{99}{\markline{\recurselevel}, }
>    \dorecurse{99}{\refline{\recurselevel}, }

Yes, it works fine! Thanks much!

Regards,
BG