From: Hans Hagen <j.hagen@xs4all.nl>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>,
mf <massifr@fastwebnet.it>
Subject: Re: offset for background overlay
Date: Sat, 11 Apr 2020 19:41:17 +0200 [thread overview]
Message-ID: <725aaed5-6a77-86a2-daa8-763232941349@xs4all.nl> (raw)
In-Reply-To: <cc51f10a-21bf-eb4f-c631-08ebd7c64595@fastwebnet.it>
On 4/11/2020 4:15 PM, mf wrote:
> Hello list,
> this MWE is a simplified version of a real case:
>
> \startuseMPgraphic{cell:triangle}
> path p ; p := unittriangle rotated 90 xscaled 2.5 OverlayWidth
> yscaled 2.5 OverlayHeight ;
> draw p withcolor red ;
> \stopuseMPgraphic
> \defineoverlay[triangle][{\uniqueMPgraphic{cell:triangle}}]
> \starttext
> \bTABLE[frame=off]
> \bTR
> \bTD[nx=2,background=triangle,align=middle] \dontleavehmode a\crlf
> text \eTD
> \eTR
> \bTR[toffset=1mm]
> \bTD left \eTD
> \bTD right \eTD
> \eTR
> \eTABLE
> \stoptext
here's a very ugly solution
\startuseMPgraphic{cell:triangle}
fill llcorner OverlayBox
-- lrcorner OverlayBox
-- (center bottomboundary OverlayBox shifted
(0,\MPy{foo:2}-\MPh{foo:2}+\MPd{foo:2}-\MPy{foo:1}))
-- cycle
withcolor red ;
setbounds currentpicture to OverlayBox ;
\stopuseMPgraphic
\defineoverlay[triangle][{\uniqueMPgraphic{cell:triangle}}]
\starttext
\bTABLE[frame=off]
\bTR
\bTD[nx=2,align=middle,height=0pt,background=triangle]\xypos{foo:1}\eTD
\eTR
\bTR
\bTD[nx=2,align=middle] \dontleavehmode a\crlf text \eTD
\eTR
\bTR[toffset=1mm]
\bTD \hpos{foo:2}{\strut} left \eTD
\bTD right \eTD
\eTR
\eTABLE
\stoptext
it is probably possible to get some info otherwise (more efficient) if
really needed (if we add some helpers)
Hans
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next prev parent reply other threads:[~2020-04-11 17:41 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-11 14:15 mf
2020-04-11 17:41 ` Hans Hagen [this message]
2020-04-11 18:11 ` Wolfgang Schuster
2020-04-11 21:59 ` mf
2020-04-12 5:53 ` Wolfgang Schuster
2020-04-13 15:21 ` mf
2020-04-13 16:14 ` Wolfgang Schuster
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