On 1/3/2015 11:11 AM, Mojca Miklavec wrote:
Hi,
Is there any way to set the maximum width of a caption? I would like
to make sure that no figure caption exceeds, say, 75% of text width.
Here's an example of "bad behaviour" in the second figure:
\starttext
\reservefigure
[width=5cm,height=2cm,frame=on][force]
{Some very small figure with not too much text: OK}
\input tufte
This can hardly be distinguished from the main text:
\reservefigure
[width=\textwidth,height=.2\textwidth,frame=on][force]
{\input tufte}
\input tufte
Desired behaviour:
\placefigure[force]{\input tufte}
{\hbox to
.75\textwidth{\hss\framed[width=\textwidth,height=.2\textwidth]{}\hss}}
\input tufte
\stoptext
I've seen an option maxwidth, but only in connection to
\externalfigure[...][maxwidth=...].
I can cheat as on the third figure above, but that seems like an ugly
approach to me.
can you test this a bit:
\unprotect
\setupcaptions
[\c!maxwidth=.75\hsize]
\def\strc_floats_prepare_stack_caption_auto
{\ifx\p_strc_floats_caption_align\empty \else
\doifnotinset\v!middle\p_strc_floats_caption_align{\let\captionovershoot\!!zeropoint}%
\fi
\edef\captionhsize{\the\wd\b_strc_floats_content}%
\scratchwidth\floatcaptionparameter\c!maxwidth\relax
\ifdim\captionhsize>.75\hsize
% float is wider than \hsize
\setbox\b_strc_floats_caption\vbox
{\settrialtypesetting
\strc_floats_caption_set_align
\hsize\scratchwidth
\notesenabledfalse
\strc_floats_make_complete_caption}%
\ifdim\ht\scratchbox>\lineheight % more lines
\setbox\b_strc_floats_caption\vbox
{\strc_floats_caption_set_align
\hsize\dimexpr\captionhsize-\captionovershoot\relax
\ifdim\hsize<\captionminwidth\relax
\hsize\scratchwidth
\fi
\strc_floats_make_complete_caption}%
\else
\setbox\b_strc_floats_caption\vbox
{\strc_floats_caption_set_align
\hsize\scratchwidth
\strc_floats_make_complete_caption}%
\fi
\else
% float is smaller of equal to \hsize
\ifdim\captionhsize<\captionminwidth\relax
\scratchdimen\captionminwidth % float smaller than min width
\edef\captionhsize{\the\scratchdimen}%
\fi
\setbox\scratchbox\vbox % test with overshoot
{\settrialtypesetting
\scratchdimen\dimexpr\captionhsize+\captionovershoot+3\emwidth\relax %
3em is an average word length
\ifdim\scratchdimen<\hsize
\hsize\scratchdimen
\fi
\notesenabledfalse
\strc_floats_make_complete_caption}%
\ifdim\ht\scratchbox>\lineheight
% at least an average word longer than a line
\setbox\b_strc_floats_caption\vbox
{\strc_floats_caption_set_align
\scratchdimen\dimexpr\captionhsize+\captionovershoot\relax
\ifdim\scratchdimen<\hsize
\hsize\scratchdimen
\fi
\strc_floats_make_complete_caption}%
\else\ifx\p_strc_floats_caption_align\empty
\setbox\b_strc_floats_caption\vbox
{\strc_floats_caption_set_align
\hsize\captionhsize
\raggedcenter % overloads
\strc_floats_make_complete_caption}%
\else
\setbox\b_strc_floats_caption\vbox
{\strc_floats_caption_set_align
\hsize\captionhsize
\strc_floats_make_complete_caption}%
\fi\fi
\fi}
\protect
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