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From: Aditya Mahajan <adityam@umich.edu>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Setting style and color attributes of label in metapost
Date: Sat, 24 Sep 2011 20:43:53 -0400 (EDT)	[thread overview]
Message-ID: <alpine.LNX.2.02.1109242022560.14346@ybpnyubfg.ybpnyqbznva> (raw)

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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             reply	other threads:[~2011-09-25  0:43 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-09-25  0:43 Aditya Mahajan [this message]
2011-10-13 11:26 ` Wolfgang Schuster

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