A footnote on page 12 of the subfig
documentation says in part:
Note that the ‘width’ may be larger than the width of the
sub-float body, or equivalently, the ‘width’ may be negative to provide more room for a caption if the
sub-float body is small. The box holding the caption is centered relative to the sub-float body.
I must not be understanding something.
First, by looking at Figure 91 on page 35, don't they mean to say that you can set the margin
to a negative value in order to get a caption that is wider than (and centered relative to) the sub-float body?
Even if this is right, I can't get a simple example to work. See my MWE below.
What am I doing wrong?
MWE:
\documentclass{article}
\usepackage{caption}
\usepackage{subfig}
\begin{document}
\begin{figure}[ht]
\centering
\subfloat[very long subfloat caption]{
\framebox[3cm][c]{
subfloat body
}
}
\end{figure}
\begin{figure}[ht]
\centering
\captionsetup[subfloat]{width=-2cm}
\subfloat[very very long subfloat caption]{
\framebox[3cm][c]{
subfloat body
}
}
\end{figure}
\begin{figure}[ht]
\centering
\captionsetup[subfloat]{margin=-2cm}
\subfloat[very very long subfloat caption]{
\framebox[3cm][c]{
subfloat body
}
}
\end{figure}
\end{document}
Best Answer
You can fool
subfig
letting it think that the subfloat is, e.g.,\textwidth
wide, by inserting the subfloat body in a box of that width.Example:
Output: