From: Zhichu Chen <zhichu.chen@gmail.com>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Re: two newbie questions (about conditional processing)
Date: Sun, 24 May 2009 16:46:48 +0800 [thread overview]
Message-ID: <769ba7780905240146o6012ccb3rba2a389a6aaf47b1@mail.gmail.com> (raw)
In-Reply-To: <024BA87B-9088-422C-8DD8-785655479EDA@gmail.com>
On Sun, May 24, 2009 at 4:00 PM, Wolfgang Schuster
<schuster.wolfgang@googlemail.com> wrote:
>
> Am 24.05.2009 um 06:12 schrieb Zhichu Chen:
>
>> As you said before, in my problem, this kind of handler could break
>> something
>> like hyper-links, and I assume Yue wanted those kind of stuffs.
>
> I don't think this is a problem for this example because the page dimension
> are always the same while in the code for you the real and the calculated
> coordinates are different.
>
>> Maybe just a \start(stop)setups which changes the background back to
>> normal
>> and \prependtoks it to some token list. So is there an \everypage or
>> \everyshipout
>> token? Then using \setuphead (I don't know if it's appropriate) or
>> \appendtoks to every title page.
>
> I posted a code to enable/disable the backgroundcolor for certain pages
> not so long ago, take a look in the mail archive.
Found it. Well, then it's just as easy as it sounds:
\unprotect
\let\!!savedbackgroundcolor\empty
\def\onbackground
{\globallet\@@mapagebackgroundcolor\!!savedbackgroundcolor}
\def\offbackground
{\globallet\!!savedbackgroundcolor\@@mapagebackgroundcolor
\globalletempty\@@mapagebackgroundcolor}
\def\nobackground
{\globallet\@@mapagebackgroundcolor\!!savedbackgroundcolor
\globalletempty\@@mapagebackgroundcolor
\appendtoks\globallet\@@mapagebackgroundcolor\!!savedbackgroundcolor\to\afterpage}
\def\gobackground
{\globallet\@@mapagebackgroundcolor\!!savedbackgroundcolor
\appendtoks\globalletempty\@@mapagebackgroundcolor\to\afterpage}
\protect
\setuphead
[chapter]
[before=\gobackground]
\setupcolors[state=start]
\setupbackgrounds[page][background=color,backgroundcolor=lightgray]\offbackground
\starttext
\chapter{hello}
\dorecurse{10}{\input zapf\par}
\chapter{hello}
\dorecurse{10}{\input zapf\par}
\chapter{hello}
\dorecurse{10}{\input zapf\par}
\stoptext
>
> 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 : https://foundry.supelec.fr/projects/contextrev/
> wiki : http://contextgarden.net
> ___________________________________________________________________________________
>
--
Best Regards
Chen
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Zhi-chu Chen | Shanghai Synchrotron Radiation Facility
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| www.sinap.ac.cn
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___________________________________________________________________________________
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 : https://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___________________________________________________________________________________
next prev parent reply other threads:[~2009-05-24 8:46 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-21 1:25 Yue Wang
2009-05-23 16:17 ` Yue Wang
2009-05-23 16:49 ` Zhichu Chen
2009-05-23 17:16 ` Yue Wang
2009-05-23 17:34 ` Wolfgang Schuster
2009-05-24 4:12 ` Zhichu Chen
2009-05-24 8:00 ` Wolfgang Schuster
2009-05-24 8:46 ` Zhichu Chen [this message]
2009-05-24 8:57 ` Wolfgang Schuster
2009-05-24 9:44 ` Zhichu Chen
2009-05-24 10:36 ` Hans Hagen
2009-05-25 6:55 ` Zhichu Chen
2009-05-25 7:12 ` Hans Hagen
2009-05-25 7:40 ` Zhichu Chen
2009-05-25 7:51 ` Wolfgang Schuster
2009-05-25 7:57 ` Hans Hagen
2009-05-25 7:30 ` Wolfgang Schuster
2009-05-25 7:42 ` Zhichu Chen
2009-05-25 7:49 ` Wolfgang Schuster
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