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
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