* Setting style and color attributes of label in metapost
@ 2011-09-25 0:43 Aditya Mahajan
2011-10-13 11:26 ` Wolfgang Schuster
0 siblings, 1 reply; 2+ messages in thread
From: Aditya Mahajan @ 2011-09-25 0:43 UTC (permalink / raw)
To: mailing list for ConTeXt users
I am writing a module which uses metapost in the background for drawing. I
wanted to create an interface for setting the style and color of metapost
labels but using \doset...attributes is not working.
Here is an example:
\definenamespace
[test]
[style=yes,
name=test,
command=yes,
setup=yes]
\definetest
[blue]
[color=blue, text=Blue]
\definetest
[two]
[blue]
[style=\bold, text=Two]
\starttext
\edef\currenttest{two}
\startMPdrawing
label.lft(\sometxt{\dosettestattributes{style}{color}
\testparameter{text}}, (0,0)) ;
\stopMPdrawing
\edef\currenttest{blue}
\startMPdrawing
label.lft(\sometxt{\dosettestattributes{color}{style}
\testparameter{text}}, (2cm,0)) ;
\stopMPdrawing
\MPdrawingdonetrue\getMPdrawing
\stoptext
Notice that the first label has the same style as the last label. This is
happening because \doset..attributes is defined as an unexpandable macro.
I can get around this by setting the value of \currenttest inside the
\sometxt{...} argument. Something like:
\def\dosometxt#1#2%
{\normaldosometxt{#1}%
{\def\noexpand\letterbackslash currenttest{\currenttest #2}}}
Surely, there should be a more direct way of achieving this?
Aditya
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___________________________________________________________________________________
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Setting style and color attributes of label in metapost
2011-09-25 0:43 Setting style and color attributes of label in metapost Aditya Mahajan
@ 2011-10-13 11:26 ` Wolfgang Schuster
0 siblings, 0 replies; 2+ messages in thread
From: Wolfgang Schuster @ 2011-10-13 11:26 UTC (permalink / raw)
To: Aditya Mahajan; +Cc: mailing list for ConTeXt users
Am 25.09.2011 um 02:43 schrieb Aditya Mahajan:
> I am writing a module which uses metapost in the background for drawing. I wanted to create an interface for setting the style and color of metapost labels but using \doset...attributes is not working.
>
> Here is an example:
>
> \definenamespace
> [test]
> [style=yes,
> name=test,
> command=yes,
> setup=yes]
>
> \definetest
> [blue]
> [color=blue, text=Blue]
>
> \definetest
> [two]
> [blue]
> [style=\bold, text=Two]
>
> \starttext
> \edef\currenttest{two}
> \startMPdrawing
> label.lft(\sometxt{\dosettestattributes{style}{color}
> \testparameter{text}}, (0,0)) ;
You can use the old \doattributes command which is expandable.
label.lft(\sometxt{\doattributes{\currenttesthash}{style}{color}{\testparameter{text}}},(0,0)) ;
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
webpage : http://www.pragma-ade.nl / http://tex.aanhet.net
archive : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___________________________________________________________________________________
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2011-09-25 0:43 Setting style and color attributes of label in metapost Aditya Mahajan
2011-10-13 11:26 ` Wolfgang Schuster
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