From: "śrīrāma via ntg-context" <ntg-context@ntg.nl>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>,
jbf <roma83537@gmail.com>
Cc: śrīrāma <citturs@gmail.com>
Subject: Re: help with facing page image
Date: Mon, 07 Mar 2022 12:31:33 +0530 [thread overview]
Message-ID: <5810090.lOV4Wx5bFT@sreeramtplt> (raw)
In-Reply-To: <e1812b89-136a-de7f-788b-744e42de715c@gmail.com>
On Monday, March 7, 2022 11:50 AM jbf wrote:
> 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...."
I think that should be easy. Suppose you have images
{chap-cover-1.jpg, chap-cover-2.jpg, ... chap-cover-10.jpg}
each of which appear at the ends of their respective chapters, then the following achieves what you want (once you point ConTeXt to the right directory for figures of course):
% kate: hl ctx
%%% SOF
\setuppagenumbering[alternative=doublesided]
\definelayer
[chapCover]
[x=0mm,
y=0mm,
width=\paperwidth,
height=\paperheight,repeat=yes]
\startsetups chapter:before
\doifoddpageelse{}
{\pushbackground[page]
\resetlayer[chapCover]
\setlayer
[chapCover]
{\determineheadnumber[chapter]
\externalfigure
[chap-cover-\currentheadnumber]
[width=\paperwidth]}
\setupbackgrounds[page][background=chapCover]
\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
\ifnum\headnumber[chapter]=5
{\bfd five}
\fi
\blank
\input tufte
\blank
\input ward
\blank
\ifnum\recurselevel=5
\page
\input zapf
\input zapf
\fi
\stopchapter
}
\stoptext
%%% EOF
So we figure out which chapter we are in and then set the layer to the corresponding picture. Personally, I much prefer to collect all the images into a separate PDF with:
%%% chap-covers.tex
\starttext
\dorecurse{10}{\startTEXpage
\externalfigure[chap-cover-\recurselevel]
\stopTEXpage}
\stoptext
%%% EOF
[and get 'chap-covers.pdf' from context]
... and then modify the 'before' setup to read as below
%%%
\startsetups chapter:before
\doifoddpageelse{}
{\pushbackground[page]
\resetlayer[chapCover]
\setlayer
[chapCover]
{\determineheadnumber[chapter]
\externalfigure
[chap-covers]
[page=\currentheadnumber,width=\paperwidth]}
\setupbackgrounds[page][background=chapCover]
\page[empty]
\popbackground}
\stopsetups
%%%
Sreeram
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next prev parent reply other threads:[~2022-03-07 7:01 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-07 3:49 jbf via ntg-context
2022-03-07 5:38 ` śrīrāma via ntg-context
2022-03-07 5:41 ` śrīrāma via ntg-context
2022-03-07 6:20 ` jbf via ntg-context
2022-03-07 7:01 ` śrīrāma via ntg-context [this message]
2022-03-07 8:27 ` jbf via ntg-context
2022-03-07 18:35 ` Wolfgang Schuster via ntg-context
2022-03-08 2:51 ` śrīrāma via ntg-context
2022-03-08 3:46 ` śrīrāma via ntg-context
2022-03-09 22:02 ` jbf via ntg-context
2022-03-10 5:35 ` Aditya Mahajan via ntg-context
2022-03-10 5:48 ` jbf via ntg-context
2022-03-10 6:51 ` śrīrāma via ntg-context
2022-03-10 8:49 ` jbf via ntg-context
2022-03-11 12:36 ` Wolfgang Schuster via ntg-context
2022-03-11 23:50 ` jbf via ntg-context
2022-03-08 0:52 ` jbf via ntg-context
2022-03-07 20:08 ` Bruce Horrocks via ntg-context
2022-03-07 20:23 ` Henning Hraban Ramm via ntg-context
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