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

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

jbf via ntg-context schrieb am 07.03.2022 um 09:27:

Appreciate your assistance. I'll do my best with what you offer here. Of course, I've always said these images are at the beginning, not "the end of their respective chapters" and I've already indicated how the images are named, simply as Chapter1.jpg  and so on, so I'll need to work around these differences in your example. But with trial and error, let's hope I get there!

The example below uses a different mechanism to add images at the start of a chapter. In the example you have to pass the name of image as userdata argument of \startchapter but in the commented \setuphead setting you can see how this can be automated. %%%% begin example % \definepageinjectionalternative %   [chapter:image] %   [renderingsetup=pageinjection:chapter:image] % % \startsetups [pageinjection:chapter:image] %   \clip %     [width=\framedwidth,height=\framedheight] %     {\centerbox{\externalfigure[\dummyparameter{name}][factor=min]}} % \stopsetups \definepageinjection   [chapter:start]   [empty]   [page=left] \definepageinjection   [chapter:insert]   [previouspage]   [%alternative=chapter:image,    pagestate=stop] \setuphead   [chapter]   [beforesection={\pageinjection[chapter:start]}, insidesection={\pageinjection[chapter:insert][name=\structureuservariable{image}]}] % \setuphead %   [chapter] %   [beforesection={\pageinjection[chapter:start]}, % insidesection={\pageinjection[chapter:insert][name={chapter\namedheadnumber{chapter}}]}] \setuppagenumbering   [alternative=doublesided] \setupexternalfigures   [location=default] \starttext \startchapter [title={Mill}] [image=mill] \dorecurse{7}{\samplefile{lorem}} \stopchapter \startchapter [title={Mill}] [image=mill] \dorecurse{11}{\samplefile{lorem}} \stopchapter \startchapter [title={Mill}] [image=mill] \dorecurse{7}{\samplefile{lorem}} \stopchapter \stoptext %%%% end example Wolfgang

On Tuesday, March 8, 2022 8:21 AM śrīrāma wrote:

However, I was not able to get the preview PDF correctly, only the first page is visible. Someone who knows how to fix this, please point me in the right direction and I will edit it as needed.

Fixed now using \setuppaper. Sreeram

On Thu, 10 Mar 2022, jbf via ntg-context wrote:

Am endeavouring to explore Wolfgang's very 'elegant' solution to this facing page challenge. The exploration has included a look at base/mkxl/page-inj.mklx (thanks Sreeram for reminding me of this) where I see immediately that the approach is experimental and where it says also that 'probably more alternatives will be added'. I wonder if that last phrase also includes the ability to manipulate the image(s) either generally or in individual cases?

So, for example., say I need (and in fact I do!) to change some aspect of individual images, e.g. I might want to scale=500, or fiddle with width/height of a particular image. At the moment I cannot see a way of doing this for each image. I wondered if the commented out setups in the response to this question might be a clue, but so far haven't been able to get that to have any effect.

Couldn't you just pass scale as a key-value parameter, similar to how `name` is passed in Wolfgang's solution? Aditya

On Thursday, March 10, 2022 3:32 AM jbf via ntg-context wrote:

Am endeavouring to explore Wolfgang's very 'elegant' solution to this facing page challenge. The exploration has included a look at base/mkxl/page-inj.mklx (thanks Sreeram for reminding me of this) where I see immediately that the approach is experimental and where it says also that 'probably more alternatives will be added'. I wonder if that last phrase also includes the ability to manipulate the image(s) either generally or in individual cases?

The following example is based on Wolfgang's solution using injections: I have modified the setup slightly to hook into \externalfigure's {width, height, orientation} using user-variables. With this I think you can place any kind of image (portrait or landscape) correctly by using width, height, and rotation. I picked up some images of cows, 'spider', 'hacker' and 'mill' and have them renamed as {chap-cover-1, ... chap-cover-6} for a total of 6 chapter images. %%% start example \definepageinjectionalternative [chapter:image] [renderingsetup=pageinjection:chapter:image] \startsetups [pageinjection:chapter:image] \clip [width=\framedwidth,height=\framedheight] {\centerbox{% \externalfigure [\dummyparameter{name}] [%factor=, width=\structureuservariable{width}, height=\structureuservariable{height}, orientation=\structureuservariable{rotation}]% }} \stopsetups \definepageinjection [chapter:start] [empty] [page=left] \definepageinjection [chapter:insert] [previouspage] [alternative=chapter:image, pagestate=stop] \setuphead [chapter] [beforesection={\pageinjection[chapter:start]}, insidesection={\pageinjection[chapter:insert][name=\structureuservariable{image}]}] \setuphead [chapter] [beforesection={\pageinjection[chapter:start]}, insidesection={\pageinjection[chapter:insert][name={chap-cover-\namedheadnumber{chapter}}]}] \setuppagenumbering [alternative=doublesided] \setupexternalfigures [location=default] \starttext \startchapter [title={Mill}] [rotation=90,width=\paperheight] \dorecurse{7}{\samplefile{lorem}} \stopchapter \startchapter [title={Mill}] [rotation=-90,width=\paperheight] \dorecurse{11}{\samplefile{lorem}} \stopchapter \startchapter [title={Mill}] [rotation=-90,width=\paperheight] \dorecurse{7}{\samplefile{lorem}} \stopchapter \startchapter [title={Mill}] [rotation=90,width=\paperheight] \dorecurse{7}{\samplefile{lorem}} \stopchapter \startchapter [title={Mill}] [rotation=-45,width=\paperwidth] \dorecurse{11}{\samplefile{lorem}} \stopchapter \startchapter [title={Mill}] [height=\paperheight] \dorecurse{7}{\samplefile{lorem}} \stopchapter \stoptext %%% end example Sreeram

jbf schrieb am 09.03.2022 um 23:02:

Am endeavouring to explore Wolfgang's very 'elegant' solution to this facing page challenge. The exploration has included a look at base/mkxl/page-inj.mklx (thanks Sreeram for reminding me of this) where I see immediately that the approach is experimental and where it says also that 'probably more alternatives will be added'. I wonder if that last phrase also includes the ability to manipulate the image(s) either generally or in individual cases?

Keep your expectations low. I wrote the code (with some changes from Hans) to include full page images in novels and the code hasn't changed much since 2013.

So, for example., say I need (and in fact I do!) to change some aspect of individual images, e.g. I might want to scale=500, or fiddle with width/height of a particular image. At the moment I cannot see a way of doing this for each image. I wondered if the commented out setups in the response to this question might be a clue, but so far haven't been able to get that to have any effect.

You have to use a custom alternative (see below) to place the image on the page because the default alternative scales the image to fit on the available space. The best solution to change orientation, size etc. of the included images is to use the \useexternalfigure command and make all changes in the style file. \definepageinjectionalternative   [chapter:image]   [renderingsetup=pageinjection:chapter:image] \startsetups [pageinjection:chapter:image]   \centerbox{\externalfigure[\dummyparameter{name}]} \stopsetups \definepageinjection   [chapter:start]   [empty]   [page=left] \definepageinjection   [chapter:insert]   [previouspage]   [alternative=chapter:image,    offset=1cm,    pagestate=stop] \setuphead   [chapter]   [beforesection={\pageinjection[chapter:start]}, insidesection={\pageinjection[chapter:insert][name={chapter-\namedheadnumber{chapter}}]}] \setuppagenumbering   [alternative=doublesided] \setupexternalfigures   [location=default] \useexternalfigure [chapter-1] [mill]   [factor=max] \useexternalfigure [chapter-2] [hacker] [orientation=90,scale=2000] \useexternalfigure [chapter-3] [cow] [orientation=90,height=\framedwidth] \starttext \startchapter [title={Mill}] \dorecurse{7}{\samplefile{lorem}} \stopchapter \startchapter [title={Hacker}] \dorecurse{11}{\samplefile{lorem}} \stopchapter \startchapter [title={cow}] \dorecurse{7}{\samplefile{lorem}} \stopchapter \stoptext Wolfgang

Special thanks to Sreeram, Wolfgang, Bruce, Hraban for help with this issue, ranging from the simplest 'manual' approach (Bruce) to one that I must confess I could never have thought of using: definepageinjection (Wolfgang). Needless to say, all contributions work, with a bit of adjustment in each case for my particular situation. The one common factor in all four contributions is the use of setups, so a light has begun flashing for me: setups are such an important feature of ConTeXt for solving many problems! Thanks to all, Julian On 7/3/22 18:01, śrīrāma wrote:

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

Am 07.03.22 um 21:08 schrieb Bruce Horrocks via ntg-context:

...

On 7 Mar 2022, at 03:49, jbf via ntg-context wrote:

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!

I didn’t see your original message. Here’s my approach, as used in https://www.dreiviertelhaus.de/reihen/eka/lauf-los-buch/ : \startsetups eka:normalheader \setupheadertexts[chapter][{\feature[=normnum]\pagenumber}][{\feature[=normnum]\pagenumber}][] \stopsetups \startsetups eka:noheader \setupheadertexts[][][][] \stopsetups \startsetups eka:imagechapter \setupalign[flushleft] \doifelse{\structureuservariable{image}}{}{% if image empty, do nothing }{% \directsetup{eka:noheader} \vbox{% \blank[big] \externalfigure[\structureuservariable{image}][width=0.8\textwidth]\par } \doifnot{\structureuservariable{motto}}{}{ \vfill \vbox{% {\MottoFont\structureuservariable{motto}} }% }% \page[right] \vbox{% \doifnot{\structureuservariable{subtitle}}{}{ {\SubtitleFont\structureuservariable{subtitle}} }% }% }% \blank[3*big] \directsetup{eka:normalheader} \setupalign[width] \stopsetups \define[2]\Nothing{} % do nothing \setuphead[chapter][ number=no, page=left, command=\Nothing, before=, after={\directsetup{eka:imagechapter}}, ] % example: \startchapter [title={Chapter Title – here only used in list}] [author={},image=cow, subtitle={Subtitle – here a quote by the author}, motto={Motto – here a short biography of the author}] ... \stopchapter Hraban