From: Tim Li <timli2013@outlook.com>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Re: Set background color for a single page
Date: Tue, 23 Apr 2013 15:05:13 +0000 [thread overview]
Message-ID: <BLU152-W36879F02A86972AB3D505DA9B40@phx.gbl> (raw)
In-Reply-To: <alpine.DEB.2.02.1304231048150.10242@nqv-guvaxcnq>
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Aditya, thanks. I like this Lua way, but I have to explore the Lua world first. Ok, reading PIL and coding in Lua.
Tim> Date: Tue, 23 Apr 2013 10:51:24 -0400
> From: adityam@umich.edu
> To: ntg-context@ntg.nl
> Subject: Re: [NTG-context] Set background color for a single page
>
> > Aditya, I want to know both please. Now I use the \start \definecolor
> > ... ... \startmakeup[standard] ... \stopmakeup \stopto assign a
> > specific color to the tilepage whose content is on a single page
> > exactly. But I don't know how to set the background for a single page,
> > say, page 3 if a document has more than three pages. Also, I don't know
> > how to cycle pages through a finite list of colors. Can you show me
> > that? Tim
>
> One way to do this is to set
>
> \setupbackgrounds[page][background=color, backgroundcolor=\PageColor]
>
> and define \PageColor such that it expands to an appropriate color. For
> arbitrary control, you can use a lua function, for example:
>
> \startluacode
> thirddata = thirddata or {}
>
> function thirddata.getpagecolor(num)
> -- A lua function that assigns colors based on page numbers
> if num == 3 then
> context("blue")
> elseif num == 5 then
> context("red")
> end
> end
> \stopluacode
>
> \def\PageColor%
> {\ctxlua{thirddata.getpagecolor(\rawcountervalue[userpage])}}
>
> \setupbackgrounds[page][background=color, backgroundcolor=\PageColor]
>
> \setuppapersize[S3]
> \starttext
>
> \dorecurse{10}{\input knuth \par}
>
> \stoptext
>
> You can also use a lua table to assign colors, and then you do not have to
> build a ladder of if statements.
>
> Aditya
> ___________________________________________________________________________________
> 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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___________________________________________________________________________________
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
___________________________________________________________________________________
prev parent reply other threads:[~2013-04-23 15:05 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-23 10:51 Tim Li
2013-04-23 11:28 ` Aditya Mahajan
2013-04-23 13:17 ` Tim Li
2013-04-23 13:47 ` Aditya Mahajan
2013-04-23 14:17 ` Tim Li
2013-04-23 14:51 ` Aditya Mahajan
2013-04-23 15:05 ` Tim Li [this message]
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