Re: Deactivating Grid-Setting for a single paragraph

[Wolfgang Schuster <schuster.wolfgang@gmail.com>]

Am 27.04.2013 um 13:38 schrieb H. Özoguz <h.oezoguz@mmnetz.de>:

> Hi there, speaking code:
> 
> \setuplayout[grid=yes]
> \showgrid
> \starttext
> {This is a line without a big-sized font.\\
> And this one has it: {\tfa THÜS}.}
> \blank
> 
> Perfectly I good disable gridsetting for a complete paragraph. I can do so by “placeongrid”. But then another problem arises; if the paragraph is (without placeongrid) half at the end of a page, and half at the beginning of the next page, than WITH placeongrid the page-break of the paragraph is impossible, so the complete paragraph is set on the next page – resulting in many blank lines on the first page, at the buttom, of course. I tried to disable gridsetting for one paragraph only by “setuplayout” (“off”, and after the paragraph “on” again), but that does not work, too, see here:\blank
> 
> {\setuplayout[grid=no]
> This is a line without a big-sized font.\\
> And this one has it: {\tfa THÜS}.
> \setuplayout[grid=yes]}
> \blank
> 
> So no effect again. My last try was to change “setupinterlinespace” before the paragraph, and change it back to default after the paragraph, but that does not work, too:\blank
> 
> {\setupinterlinespace[line=4ex]
> This is a line without a big-sized font.\\
> And this one has it: {\tfa THÜS}.
> \setupinterlinespace[line=2.8ex] }
> \blank
> 
> But that does not work, too. How to make this work, disabling grid-set for a paragraph? Perfectly like “placeongrid”, but with the possibility to break it into to pages:\blank
> 
> \placeongrid[top]{
> This is a line without a big-sized font.\\
> And this one has it: {\tfa THÜS}.}
> \blank
> 
> The problem comes here from setting arabic words into the german text, for arabic I have to use a bigger font, and so the problem simulated here arises.

When you use the grid you have to restrict yourself and use fixed values for the interlinespace. The correction of the whitespace after the increased linespace can be calculated and compensated by half lines in the \blank command.

\setuplayout[grid=yes]

\setupinterlinespace[line=14pt]

\showgrid

\starttext

\dorecurse{3}{\input knuth\par}

\blank[line]
%\blank[2*line]

\start \setupinterlinespace[line=21pt]

\input knuth\par

\stop

\ifodd\cldcontext{math.round(\number\pagetotal/\number\dimexpr21pt\relax)}
  \blank[line,halfline]
\else
  \blank[line]
\fi

\dorecurse{2}{\input knuth\par}

\stoptext

Wolfgang
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