Thanks Wolfgang!
Somehow I overlooked the two subtleties you are teaching me here:
> \definelayer[Number][width=\paperwidth,height=\paperheight,doublesided=yes]
in which the option doublesided=yes, helps and the options [odd] or [even] in
\setlayer:
> \setlayer[Number][odd]
> \setlayer[Number][even]
I will wikify this later this weekend.
Best regards: OK
On 20 mai 2010, at 10:14, Wolfgang Schuster wrote:
> Good example!
>
>
> \setupcolors[state=start]
>
> \setuppagenumbering[location=footer,alternative=doublesided]
>
> \definelayer[Number][width=\paperwidth,height=\paperheight,doublesided=yes]
>
> \define[1]\myNumber
> {\setlayer[Number][odd]
> [preset=righttop,voffset=45mm,hoffset=3mm]
> {\offset[location=rt,rightoffset=-3mm]
> {\tlap{\color[darkgreen]{\scale[height=30mm,width=22mm]{\ss#1}}}}}%
> \setlayer[Number][even]
> [preset=lefttop,voffset=45mm,hoffset=25mm]
> {\offset[location=tl,leftoffset=-3mm]
> {\tlap{\color[darkgreen]{\scale[height=30mm,width=22mm]{\ss#1}}}}}}
>
> \setupbackgrounds[page][background=Number]
>
> \starttext
> \dorecurse{4}{\myNumber{#1}\input knuth \page}
> \dorecurse{4}{\myNumber{#1}\dorecurse{6}{\input knuth }\page}
> \dorecurse{4}{\myNumber{#1}\dorecurse{3}{\input knuth }\page}
> \stoptext
>
> Wolfgang
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