From: Wolfgang Schuster <schuster.wolfgang@googlemail.com>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Re: simple usage of \hpos
Date: Sun, 07 Feb 2010 09:42:52 +0100 [thread overview]
Message-ID: <4B6E7D0C.7030507@googlemail.com> (raw)
In-Reply-To: <20100206221737.GA697@gaston.couberia.bzh>
Am 06.02.10 23:17, schrieb Peter Münster:
> Hello,
>
> How can I place an element as background at a previously defined position?
>
> Here a test-file to show what I'm looking for:
>
> \definelayer[graphics][position=yes]
> \setupbackgrounds[page][background=graphics]
> \starttext
> Here is some text. I would like to appear a graphics exactly
> behind \hpos{XXX}{HERE}. How can I do this, without measuring by hand the
> x- and y-offsets, and perhaps also without using metapost?
untested:
\newcounter\BackgroundPictures
\definelayer[BackgroundPicture][width=\paperwidth,height=\paperheight]
\def\FixedPicture
{\dodoubleempty\doFixedPicture}
\def\doFixedPicture[#1][#2]%
{\doglobal\increment\BackgroundPictures
\xypos{fixedpicture:\BackgroundPictures}%
\doifnotmode{first}
{\setlayer
[BackgroundPicture]
[x=\MPx{fixedpicture:\BackgroundPictures},
y=\MPy{fixedpicture:\BackgroundPictures}]
{\externalfigure[#1][#2]}}}
\setupbackgrounds[page][background=BackgroundPicture]
\starttext
... \FixedPicture[...] ...
\stoptext
Wolfgang
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next prev parent reply other threads:[~2010-02-07 8:42 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-06 22:17 Peter Münster
2010-02-07 8:42 ` Wolfgang Schuster [this message]
2010-02-07 12:22 ` Peter Münster
2010-02-07 12:46 ` Wolfgang Schuster
2010-02-07 14:26 ` Peter Münster
2010-02-07 14:56 ` Wolfgang Schuster
2010-02-07 15:28 ` Peter Münster
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