[NTG-context] adapt fontsize to given width

[Wolfgang Schuster]

> Am 14.01.2015 um 17:50 schrieb Pablo Rodriguez <oinos at gmx.es>:
> 
> Dear list,
> 
> I have the following sample:
> 
>    \showframe
>    \starttext
>    {\setupbodyfont[120pt]My Title}
>    \stoptext
> 
> Is there a way to make ConTeXt automatically calculate the size of the
> \setupbodyfont, so that the passage fits exactly to text width?

\starttext

\WidthSpanningText{My Title}{\textwidth}{Serif}

\WidthSpanningText{My Title}{12cm}{MonoBold}

\WidthSpanningText{My Title}{14cm}{SansItalic}

\stoptext

Wolfgang