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From: Aditya Mahajan <adityam@umich.edu>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Re: Layers in ConTeXt
Date: Sat, 14 Jul 2007 10:51:56 -0400 (EDT)	[thread overview]
Message-ID: <alpine.WNT.0.999.0707141048110.1908@nqvgln> (raw)
In-Reply-To: <1235056452.20070713113127@iol.it>

On Fri, 13 Jul 2007, Giuseppe Bilotta wrote:

> Hello all,

Welcome back Giuseppe. I had benifitted a lot from your efforts of 
improving the math support in ConTeXt. Had it not been for the amsl 
module, I might have never switched to ConTeXt and would have missed a 
lot of fun.

> I have a couple of questions concerning the use of layers in
> ConTeXt. I'm working with Luigi Scarso on a layout which is
> characterized by some fixed-position elements surrounding
> the actual main body of text.
>
> For the fixed-position elements, I'm using layers. However,
> my ConTeXt is a little rusty[*], so there are a couple of
> things which I need hints for.
>
> The first one is very simple: is there a way to 'fix' the
> layer's content "until they change"? I've currently set them
> as page backgrounds, but their content gets reset on each
> new page.
>
> The second question is slightly more complex: is there a way
> to add contents to a layer, rather than replacing the
> current layer content? Something like a macro
>
> \addtolayer[layername][hoffset=whatever(optional)]{additional content}

This is how I would do it. Not sure if this is the best way. Use 
tokens to keep track of the current information that should go to the 
layer, and repeat the layer on each page.

\newtoks\testtoks

\definelayer[test]
             [ width=\paperwidth,
              height=\paperheight,
             ]

\startsetups make:test
\setlayer[test][x=5cm,y=3cm]{\framed[align=normal,width=5cm]{\the\testtoks}}
\stopsetups

\setupbackgrounds[page][setups=make:test,background=test]

\starttext

\testtoks{This is a test}

Let's see

\page

Now add something to the layer

\input knuth

\appendtoks \endgraf \input tufte \to \testtoks

\page

Let's start all over again

\testtoks {Testing again}

\stoptext


HTH,
Aditya
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  parent reply	other threads:[~2007-07-14 14:51 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-07-13  9:31 Giuseppe Bilotta
2007-07-13  9:43 ` luigi scarso
2007-07-13 12:08 ` Peter Rolf
2007-07-13 15:49   ` Giuseppe Bilotta
2007-07-13 16:22     ` Peter Rolf
2007-07-13 21:28       ` Giuseppe Bilotta
2007-07-14 14:51 ` Aditya Mahajan [this message]
2007-07-14 16:14   ` endnotes Horacio Suarez
2007-07-15 22:42   ` Layers in ConTeXt Giuseppe Bilotta

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