From: Hans Hagen <pragma@wxs.nl>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Cc: Alexandre Gerussi <alexandre.gerussi@free.fr>
Subject: Re: problem with initialize_box in mkIV
Date: Wed, 06 Mar 2013 09:39:27 +0100 [thread overview]
Message-ID: <513700BF.1010009@wxs.nl> (raw)
In-Reply-To: <5135C724.9090909@free.fr>
On 3/5/2013 11:21 AM, Alexandre Gerussi wrote:
> Hi there,
>
> i'm having problems with metapost and positional graphics in mkIV.
> Here is a small test file that compiles OK with texexec but fails to
> compile with context:
>
> % the beginning
> \defineoverlay[frames][\positionoverlay{frames}]
> \setupbackgrounds[page][background=frames]
>
> \startMPpositiongraphic{frame}
> initialize_box(\MPpos{\MPvar{self}});
> draw llxy--lrxy--urxy--ulxy--cycle;
> \stopMPpositiongraphic
>
> \startpositionoverlay{frames}
> \setMPpositiongraphic{one}{frame}
> \setMPpositiongraphic{two}{frame}
> \stoppositionoverlay
>
> \starttext
> This \hpos{one}{word} should be \hpos{two}{framed}.
> \stoptext
> % the end
>
> My system is a Debian Testing, but I don't believe that it is related to
> the distribution, as this example also fails
> in the context online compiler @ http://live.contextgarden.net/
>
> The problem seems located around the initialize_box macro.
The whole positioning mechanism has been overhauled last year (columns,
regions, floats, the whole lot should be able to deal with it).
\defineoverlay[frames][\positionoverlay{frames}]
\setupbackgrounds[text][background=frames]
\startMPpositiongraphic{frame}
if unknown context_apos : input mp-apos.mpiv ; fi ;
\MPgetposboxes{\MPvar{self}}{\MPanchorid}
if nofposboxes = 1 :
draw posboxes[1] ;
fi ;
\stopMPpositiongraphic
\startpositionoverlay{frames}
\setMPpositiongraphic{one}{frame}
\setMPpositiongraphic{two}{frame}
\stoppositionoverlay
\starttext
This \hpos{one}{word} should be \hpos{two}{framed}.
\stoptext
At some point the mp modules will be preloaded. Watch the used layer:
text instead of page. At the end of anch-bck.mkiv you can find some more.
Hans
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prev parent reply other threads:[~2013-03-06 8:39 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-05 10:21 Alexandre Gerussi
2013-03-06 8:39 ` Hans Hagen [this message]
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