Re: backgrounds

["Procházka Lukáš Ing. - Pontex s. r. o." <LPr@pontex.cz>]

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Source & result attached.

On Wed, 15 Oct 2014 10:33:28 +0200, Hans Hagen <pragma@wxs.nl> wrote:

> Hi,
> 	
> new in next beta
>
> %D Sometimes you have a document wide (page) background but need to
> overload it
> %D locally. In such case (at least in my experience) the only values
> that get set
> %D are the background and backgroundcolor (if set at all). A full
> inheritance chain
> %D would complicate things because then we need to use named backgrounds
> which in
> %D turn will make this mechanism slower. I considered independent local
> backgrounds
> %D but that also complicates the code (not that much) but isolation
> means that we
> %D need to set more parameters each time. The following simple approach
> proabbly
> %D suits most usage.
>
> \starttext
>
>      \setupbackgrounds[page][background=color,backgroundcolor=red]
>      \input tufte
>      \page
>      \setupbackgrounds[page][background=,backgroundcolor=]
>      \input tufte
>      \page
>      \setupbackgrounds[page][background=color,backgroundcolor=red]
>      \input tufte
>      \page
>      \pushbackground[page]
>          \setupbackgrounds[page][background=color,backgroundcolor=green]
>          \input tufte
>          \page
>      \popbackground
>      \input tufte
>      \page
>
> \stoptext
>
> (only two parameters pushed/popped)


-- 
Ing. Lukáš Procházka | mailto:LPr@pontex.cz
Pontex s. r. o.      | mailto:pontex@pontex.cz | http://www.pontex.cz
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147 14 Praha 4

Tel: +420 241 096 751
Fax: +420 244 461 038

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\setupbackgrounds[page][background=color,backgroundcolor=red]
    \input tufte
    \page
    \setupbackgrounds[page][background=,backgroundcolor=]
    \input tufte
    \page
    \setupbackgrounds[page][background=color,backgroundcolor=red]
    \input tufte
    \page
    \pushbackground[page]
        \setupbackgrounds[page][background=color,backgroundcolor=green]
        \input tufte
        \page
    \popbackground
    \input tufte
    \page

\stoptext

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