Let the width of a cell be set by a picture

Question

I wish to have a table with two rows - first one with a picture, and the second is some text (I know I can probably do it within the figure environment, but I want to do it on my own). I want the text to be split whenever necessary, so I use \begin{tabular}{p{width}}. However, I decided that I want to firstly set the height of the picture, and then let the width of the scaled picture determine the width of the text cell. How can I do it?

Answer 1

First set the picture into a box, then you can get the width of the box to use in your p argument using \settowidth (or just the \wd primitive) then use \usebox to put the picture into your table.

\documentclass{article}

\newsavebox\foo

\begin{document}

\savebox\foo{%
%\includegraphics...
a picture here}

\begin{tabular}{|p{\wd\foo}|}
\usebox\foo\\
some text here some text here
\end{tabular}


\end{document}