[NTG-context] Framed: Individual background offsets

Wolfgang Schuster schuster.wolfgang at gmail.com
Sat Mar 23 17:49:17 CET 2013


Am 23.03.2013 um 14:56 schrieb Marco Patzer <homerow at lavabit.com>:

> Hi,
> 
> how can I set individual offsets for the background, similar to
> loffset, roffset, etc.?
> 
> \defineframedtext
>  [foo]
>  [frame=off,
>   offset=none,
>   backgroundoffset=1cm,
>   %% backgroundloffset=1cm, %% there is no backgroundloffset
>   background=screen]
> 
> \starttext
> 
> %% backgroundoffset is applied on all four sides
> \startfoo
>  \input ward
> \stopfoo
> 
> \input knuth
> 
> %% this is what I'm aiming for
> \startnarrower [-1cm]
>  \startfoo [backgroundoffset=0cm, loffset=1cm]
>    \input ward
>  \stopfoo
> \stopnarrower
> 
> \stoptext

\startuseMPgraphic{framed:background}
  fill unitsquare xyscaled(OverlayWidth,OverlayHeight) leftenlarged 1cm withcolor \MPcolor{lightgray};
  setbounds currentpicture to OverlayBox ;
\stopuseMPgraphic

\defineoverlay[framed:background][\useMPgraphic{framed:background}]

\defineframedtext
 [foo]
 [frame=off,
  offset=none,
  background=framed:background]

\starttext

\startfoo
\input ward
\stopfoo

\stoptext

Wolfgang


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