[NTG-context] Questions on columnsetspan (and grids and backgrounds)

Mikael P. Sundqvist mickep at gmail.com
Sat May 18 21:40:14 CEST 2019


On Wed, May 15, 2019 at 9:28 AM Hans Hagen <j.hagen at xs4all.nl> wrote:

> On 5/14/2019 11:36 AM, Mikael P. Sundqvist wrote:
> > On Tue, May 14, 2019 at 10:39 AM Hans Hagen <j.hagen at xs4all.nl> wrote:
> >>
> >> On 5/13/2019 5:59 PM, Mikael P. Sundqvist wrote:
> >>> Den lör 11 maj 2019 10:28Mikael P. Sundqvist <mickep at gmail.com
> >>> <mailto:mickep at gmail.com>> skrev:
> >>>
> >>>      Hi,
> >>>
> >>>      I have for some hours tried to understand how to work with
> >>>      columnsetspans (I'm trying with an updated lmtx), and have some
> >>>      questions.
> >>>
> >>>      1) Is it only the floats that has the long list of placement
> options
> >>>      (given on p. 18 in the columnsets manual), or should they also
> apply
> >>>      to columnsetspans and columnsetareas? (I cannot get it to work
> with
> >>>      "default=fxtb:2*10" and similar options for other elements than
> >>>      floats). It would be useful to have it for other type of elements
> as
> >>>      well.
> >>>
> >>>      2) What is the current correct way to get back on grid after
> formulas?
> >>>      The only key that had lead me to something that seems to work in
> >>>      \setupformulas is "option=depth". Is that the way to go?
> >>>
> >>>      3) This is a bit unrelated, but is it possible to set page
> backgrounds
> >>>      on specific page. Something like \setupbackgrounds[page][page=3,
> ...]
> >>>      (I cannot find any keys for this in setup-en.pdf). Right now I
> can set
> >>>      it for an odd and an even page, but then if I want a background
> on the
> >>>      page after that, I have to put that code at the place where it
> will be
> >>>      used. (I got an error with \startpostponing[+1] ...
> \stoppostponing)
> >>>
> >>>      4) To be a bit more concrete on the first issue: In the example
> below,
> >>>      how can I place the columnsetspan at the bottom right? Second and
> >>>      third column, 10 lines down? I attach the result of running this
> file.
> >>>
> >>>      /Mikael
> >>>
> >>>      \setuplayout[grid=yes]
> >>>      \showgrid
> >>>      \definecolumnset[three][n=3]
> >>>
> >>>      \definecolumnsetspan[two][
> >>>      n=2,
> >>>      background=color,
> >>>      backgroundcolor=lightgray,
> >>>      ]
> >>>
> >>>      \starttext
> >>>      \startcolumnset[three]
> >>>      \samplefile{knuth}
> >>>
> >>>      \startcolumnsetspan[two][default=btrl]
> >>>      \samplefile{ward}
> >>>      \stopcolumnsetspan
> >>>
> >>>      \dorecurse{5}{\samplefile{knuth}\par}
> >>>      \stopcolumnset
> >>>      \stoptext
> >>>
> >>>
> >>> Hi!
> >>>
> >>> I have looked more carefully at the columnsets manual, and it looks
> like
> >>> (parts of) the columnsets mechanism is somehow broken at the moment,
> >>> since some of the examples there are not showing what they are
> supposed to.
> >>
> >> the mkii mechanism has been replaced by a new one but it's not
> >> completely compatible (these placements are actually for floats and
> >> spans were just a special kind abusing that mechanism)
> >>
> >>> Can this be confirmed? Is there a plan to get it to work soon again?
> >> i'll put it on the todo list
> >>
> >> -----------------------------------------------------------------
> >>                                             Hans Hagen | PRAGMA ADE
> >>                 Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
> >>          tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
> >> -----------------------------------------------------------------
> >
> > Hi!
> >
> > Many thanks for your reply! Then I stop my playing with it now
> > (several things work and it looks quite nice!).
> >
> > I really appreciate any effort in this direction, since I think this
> > grid+column functionality is a very nice feature to have!!
> this will work in a next upload (watch out: columnsets operate on a spread)
>
> \setuppagenumbering[alternative={doublesided}]
>
> \showgrid
>
> \setupalign[verytolerant] \dontcomplain
>
> \definecolumnset[three][n=3]
>
> \definecolumnsetspan[two]
>    [n=2,
>     background=color,
>     backgroundcolor=lightgray]
>
> \starttext
>
> \page[left]
>
> \startcolumnset[three]
>
>      \startcolumnsetspan[two][c=1,r=5]
>          \samplefile{ward}
>      \stopcolumnsetspan
>
>      \startcolumnsetspan[two][method=btlr,c=2,r=3]
>          \samplefile{ward}
>      \stopcolumnsetspan
>
>      \dorecurse{6}{\samplefile{knuth}\par}
>
> \stopcolumnset
>
> \stoptext
>
> -----------------------------------------------------------------
>                                            Hans Hagen | PRAGMA ADE
>                Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
>         tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
> -----------------------------------------------------------------
>

Many thanks for the update today!

One follow-up question: How do I place a columnsetspan on a right page in a
spread? If I change c=2 to c=4 in your example, it disappears. Is there
another way?

I have realized that one can use columnsetareas to "forbid" text to go to
certain lines, which is useful. But I have the same problem with them, not
showing up on right pages if I use x=4 (for example). This is perhaps not
the intended way to use areas, but it works pretty good on left pages to
have the columns start on other lines than number one, or to make them stop
before the last line, so it would be fun to have them on right pages as
well.

/Mikael
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