Re: [NTG-context] help with facing page image
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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Re: [NTG-context] help with facing page image
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
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Re: [NTG-context] help with facing page image
On Monday, March 7, 2022 11:08 AM śrīrāma wrote:
>
> From what I understood from your explanation, I have this:
>
A formatted version below –
%%% 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
Sreeram
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Re: [NTG-context] help with facing page image
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
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[NTG-context] help with facing page image
I wonder if someone can help me untangle the current little mess I seem
to be creating!
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!
A question along these lines (but not quite the same) was asked back in
2019, so I started with what seemed to me to be the simplest response to
this question. Here is what I have to get the image before Chapter 1 in
bodymatter:
\startbodymatter
\definelayer[mylayer] % name of the layer
[x=0mm, y=0mm, % from upper left corner of paper
width=\paperwidth,height=\paperheight] % let the layer cover the full paper
\setlayer[mylayer]
[hoffset=2.5cm, voffset=3cm]
{\externalfigure[Chapter1.jpg][width=.9\textwidth]}
\doifoddpageelse
{}
{\pushbackground[page]
\setupbackgrounds[page]%[background=color,backgroundcolor=red]
[background=mylayer]
\page[empty]
\popbackground}
\startchapter[title={Prelude}] etc.
This correctly places the Chapter1.jpg on the facing page to Chapter 1.
My problem comes with Chapter 2, since Chapter 1 finishes on an even
page, and this means I would need a blank odd page to follow that so
that Chapter2.jpg (a different image to the first) can be on the verso
of that and the Chapter itself would then start on the odd page facing that.
I think the \doiffoddpageelse command above is only meant to work when a
chapter ends on an odd, not an even page, but I do not know what
alternative command to give.
Repeating the above set of commands prior to \startchapter for chapter 2
places the image, naturally enough, behind the last page of text for
Chapter 1, which is unacceptable, so I thought I could simply add a
blank page or two after the chapter and it would all fall into place. I
tried various ways of doing that (e.g. \page[+2], or using makeup
pages), and while I can add pages that way, I can't get the image to
appear.
No doubt the solution is simple enough. It might also lie in the
\setuphead[chapter] arrangement too. I've tried page=yes there, but to
no avail. I also tried \ startsetups[chapter:before] with the
pushbackground etc command and added that in with
before=\directsetup{chapter:before} as suggested in the wiki, but
couldn't get that to work either. By that stage I was so tangled up in
the problem I may not have been able to think straight :-). Somehow,
though, I think most of the elements are there.
Any help would be appreciated.
Julian
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