Hi Wolfgang,
Indeed your solution works without any flaw…
Looking at your code, I learned that Overlaybox is an object which can be
filled with a background color, as in:
fill OverlayBox withcolor lightgray ;
so that the background can be in color.
Should we add this kind of problems and solutions to the wiki?
If yes, I am willing to do so.
Best regards: OK
On 18 oct. 2010, at 17:22, Wolfgang Schuster wrote:
>
> Am 18.10.2010 um 14:18 schrieb Otared Kavian:
>
>> Your solution works as intended when the framed, highlighted text with
>> background spans over two pages (though it doesn't when it spans over three
>> pages or more, but this is not a real issue, since it is a bad idea to have
>> such long highlighted texts…).
>
>
> I guess this is also possible with textbackground:
>
> \newcounter\CurrentBackground
>
> \def\StartBackground
> {\doglobal\increment\CurrentBackground
> \setposition{Background:b:\CurrentBackground}%
> \startbackground}
>
> \def\StopBackground
> {\stopbackground
> \setposition{Background:e:\CurrentBackground}}
>
> \def\DrawBackground
>
> {\ifnum\MPp{Background:b:\CurrentBackground}=\MPp{Background:e:\CurrentBackground}
> \startMPcode
> draw topboundary OverlayBox withcolor red ;
> draw bottomboundary OverlayBox withcolor red ;
> draw leftboundary OverlayBox withcolor red ;
> draw rightboundary OverlayBox withcolor red ;
> \stopMPcode
> \else\ifnum\realpageno=\MPp{Background:b:\CurrentBackground}
> \startMPcode
> draw topboundary OverlayBox withcolor red ;
> draw leftboundary OverlayBox withcolor red ;
> draw rightboundary OverlayBox withcolor red ;
> \stopMPcode
> \else\ifnum\realpageno=\MPp{Background:e:\CurrentBackground}
> \startMPcode
> draw bottomboundary OverlayBox withcolor red ;
> draw leftboundary OverlayBox withcolor red ;
> draw rightboundary OverlayBox withcolor red ;
> \stopMPcode
> \else
> \startMPcode
> draw leftboundary OverlayBox withcolor red ;
> draw rightboundary OverlayBox withcolor red ;
> \stopMPcode
> \fi\fi\fi}
>
> \defineoverlay[DrawBackground][\DrawBackground]
>
> \starttext
>
> \setupbackground[background=DrawBackground]
>
> \input knuth
>
> \StartBackground
> \dorecurse{12}{\input knuth\par}
> \StopBackground
>
> \input knuth
>
> \StartBackground
> \input knuth\par
> \StopBackground
>
> \input knuth
>
> \stoptext
>
> Wolfgang
>
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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
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archive : http://foundry.supelec.fr/projects/contextrev/
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