Re: Moving horizontally a whole ensemble of layers in the same run?

[Rudolf Bahr <quasi@quasi.de>]

On Wed, Dec 18, 2019 at 06:13:51PM +0100, Wolfgang Schuster wrote:
> Rudolf Bahr schrieb am 18.12.2019 um 15:13:
> > On Tue, Dec 17, 2019 at 07:30:49PM +0100, Hans Hagen wrote:
> > 
> > > you need to make a MWE to show what you mean
> > > 
> > > normally
> > > 
> > > \hbox to <somewidth>{\hss<come content>\hss}
> > > 
> > > is good enough for centering
> > Here is my MWE. Think of a photo album. To make it interesting the pages should
> > all be different. To this purpose layers are a good means. I'd like to centre
> > the layers on their page without doing so manually and without changig the distances
> > between them. Using luacode one can calculate the distance d between the leftmost
> > and the rightmost edge. Half the difference (\textwidth - d) is the amount to move
> > the whole layer ensemble.
> > 
> > My question is now: Does in context exist a possibility to move all layers jointly
> > without correcting all their x-values subsequently?
> 
> 1. You can use hoffset and voffset to shift all layers.
> 
> 2. You can use \setlayerframed to put paragraphs in a layer.
> 
> 
> \setuppapersize[A4,landscape]
> 
> \setupexternalfigures[location=default]
> 
> \definelayer[LAY]
> 
> \starttext
> 
> \startbuffer
> 
> \setlayerframed
>   [LAY]
>   [x=0pt,
>    y=-8pt]
>   [frame=off,
>    width=.35\textwidth,
>    align={normal,tolerant}]
>   {\externalfigure[cow][width=\hsize]
>    \blank[line]
>    \input tufte\par}
> 
> \setlayerframed
>   [LAY]
>   [x=225pt,
>    y=0pt]
>   [orientation=90,
>    foregroundstyle={\definedfont[Serif at 82pt]}]
>   {JOURNEY}
> 
> \setlayerframed
>   [LAY]
>   [x=360pt,
>    y=50pt]
>   [frame=off,
>    width=200pt,
>    align={normal,tolerant}]
>   {\input ward
>    \blank[line]
>    \externalfigure[hacker][height=.4\textheight]}
> 
> \flushlayer[LAY]
> 
> \stopbuffer
> 
> \getbuffer
> 
> \page
> 
> \setuplayer[LAY][hoffset=4cm,voffset=-2cm]
> 
> \getbuffer
> 
> \stoptext
> 
> Wolfgang
> 

Thank you very much, Wolfgang! That is exactly what I need
and what I was looking for! Very nice coding indeed!

Rudolf
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