[NTG-context] help with facing page image

[jbf]

I can see how that works, Sreeram, especially the chapter:after to cope 
with the chapters ending on an even page. Though I will have to try it 
now on a copy of the real document to test it there.

All ten images are different, though, in my case (Chapter1.jpg, 
Chapter2.jpg... Chapter10.jpg all in a pics directory, so I'd point 
\setupexternalfigures to that). I wonder if there is a way to list them 
so that they get called in order as chapters proceed. A kind of "if such 
and such then \setlayer 1,2,3...."

Julian

On 7/3/22 16:38, śrīrāma wrote:
> On Monday, March 7, 2022 9:19 AM jbf via ntg-context wrote:
>> Author wants an image on facing page to each of 10 chapters in the
>> bodypart of the document. Assume that everything else is working
>> properly for this document (double-sided etc.), but other than before
>> chapter 1, I can't seem to get my facing page image to appear where it
>> should!
>  From what I understood from your explanation, I have this:
>
> %%% SOF
>    % for 'mill'
>    \setupexternalfigures[location={default}]
>
>    \setuppagenumbering[alternative=doublesided]
>
>    \definelayer[mill][x=0mm,y=0mm,width=\paperwidth,height=\paperheight,repeat=yes]
>    \setlayer[mill]{\externalfigure[mill][width=\paperwidth]}
>
>    \startsetups chapter:before
>    \doifoddpageelse{}
>      {\pushbackground[page]
>      \setupbackgrounds[page][background=mill]
>      \page[empty]
>      \popbackground}
>    \stopsetups
>
>    \startsetups chapter:after
>    \doifoddpageelse{}
>      {\page[empty]}
>    \stopsetups
>
>    \setuphead
>      [chapter]
>      [page=yes,
>      before=\directsetup{chapter:before},
>      aftersection=\directsetup{chapter:after}]
>
>    \starttext
>    \dorecurse{10}{
>      \startchapter[title={Chapter \convertnumber{word}{\recurselevel}}]
>        \input knuth
>        \blank
>        \input tufte
>        \blank
>        \input ward
>        \blank
>        \ifnum\recurselevel=5
>          \page
>          \input zapf
>          \input zapf
>        \fi
>      \stopchapter
>    }
>    \stoptext
> %%% EOF
>
> [I am just using the mill picture on every facing page of chapter]
> If the chapter ends on an even page then we can insert an empty page with \page[empty] with [aftersection=...] in \setuphead. The [before=...] is push, set background to mill on a new (empty) left page and then pop back (much like the example from wiki).
>
> Sreeram
>
>