[NTG-context] hbox after \page[disable]

Hans Hagen pragma at wxs.nl
Sun Dec 4 18:13:27 CET 2016


On 12/4/2016 2:12 PM, Michael Eidenbenz wrote:
> I have a doublesided layout.
> On the right side i place the text, figures (if i have any) go on the left side.
> the MWE below works quite nice.
>
> But if i want the figure to be full height, two pages are skipped.
> This is becaus the hbox right below of the figure.
> I think it is placed during the \page[disable] pass.
>
> What can I do to avoid this hbox?

\def\Figure#1{\placefigure[location={page,none}]{}{#1}}


> Thanks Michael
>
>
> \enabletrackers
> [visualizers.hbox]
>
> \useMPlibrary[dum]
>
> \setuppagenumbering
>  [alternative=doublesided]
>
> \definelayout[odd][width=10cm]
> \definelayout[even][width=15cm]
>
> \newtoks \EvenPage
>
> \appendtoks
> \the\EvenPage
> \global\EvenPage\emptytoks
> \page[odd]
> \to\everyafteroutput
>
> \unexpanded\def\Figure#1{%
>   \appendtoks
>   \page[even]
>   #1
>   \page[disable]
>   \to\EvenPage}
>
> \showframe
>
> \starttext
>
> \dorecurse{4}{\input{tufte}\par}\page
> \Figure{\externalfigure[dummy][factor=fit]}
> \dorecurse{4}{\input{knuth}\par}\page
> \Figure{\externalfigure[dummy][height=\textheight]}  %
> \dorecurse{8}{\input{ward}\par}
> \stoptext
>
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