From: Wolfgang Schuster <wolfgang.schuster.lists@gmail.com>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Re: offset for background overlay
Date: Sat, 11 Apr 2020 20:11:13 +0200 [thread overview]
Message-ID: <d733d964-abb1-0589-9057-9022964f7d9f@gmail.com> (raw)
In-Reply-To: <725aaed5-6a77-86a2-daa8-763232941349@xs4all.nl>
Hans Hagen schrieb am 11.04.2020 um 19:41:
> 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)
Simpler, put the table in a frame.
\startuseMPgraphic{cell:triangle}
draw llcorner OverlayBox
-- lrcorner OverlayBox
-- center topboundary OverlayBox
-- cycle
withcolor red ;
\stopuseMPgraphic
\defineoverlay[triangle][{\uniqueMPgraphic{cell:triangle}}]
\starttext
\startframed[frame=off,offset=1ex,loffset=2ex,roffset=2ex,toffset=2ex,background=triangle]
\bTABLE[frame=off]
\bTR
\bTD[nx=2,align=middle] a\crlf text \eTD
\eTR
\bTR[toffset=1mm]
\bTD left \eTD
\bTD right \eTD
\eTR
\eTABLE
\stopframed
\stoptext
Wolfgang
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next prev parent reply other threads:[~2020-04-11 18:11 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
2020-04-11 18:11 ` Wolfgang Schuster [this message]
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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