backgrounds

[Hans Hagen <pragma@wxs.nl>]

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)
-- 

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                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
     tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
                                              | www.pragma-pod.nl
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