[NTG-context] About testing rest of space on a page

[Willi Egger]

Hello Taco and Wolfgang!

Thank you both for the reply and input. — I am going to play :-)

Kind regards

Willi

> On 30 Jul 2020, at 21:25, Wolfgang Schuster <wolfgang.schuster.lists at gmail.com> wrote:
> 
> Taco Hoekwater schrieb am 30.07.2020 um 09:05:
>>> On 29 Jul 2020, at 23:08, Willi Egger <context at boede.nl> wrote:
>>> 
>>> Good evening!
>>> 
>>> I have a bookproject in which sections are ended with a small graphical element. Now as usual this graphic might be moved to a new page which is of course unwanted.
>>> 
>>> At this moment I have:
>>> 
>>> \startsetups endsection
>>> \vfil
>>> \placefigure[middle,none][]{}{\externalfigure[ornament2][height=2\lineheight]}
>>> \stopsection
>>> \stopsetups
>>> 
>>> \def\stopmysection{\setups{endsection}}
>>> 
>>> I use then instead of \stopsection the \stopmysection. This works except that the ornament is in some cases placed on the next page. — My question is whether it is possible to do a \testpage and evaluate the result hereof and then using either the placement of the ornament and stop the section or just end the section without ornament?
>> You can put your setups *inside* the test:
>> 
>>  \definepagechecker
>>    [willi]
>>    [method=1,before=,after=,inbetween={\setups{endsection}}]
>> 
>>  \def\stopmysection
>>    {\checkpage[willi][lines=4]}
>> 
>> The before=/after= pair is used when a page break is forced by the test, inbetween= is used if there is no forced break.
>> 
>> (\testpage is a wrapper around \checkpage:
>> https://source.contextgarden.net/page-brk.mkiv?search=testpage#l564 )
> 
> No need for a new \stop command.
> 
> \setuphead
>  [section]
>  [aftersection={\checkpage[willi][lines=4]}]
> 
> Wolfgang
> 
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