计算文本长度

Question

是否可以计算 TikZ 编写的文本的长度？

我想将单词放入圆圈内。但有时单词对于圆圈来说太长了。所以我的想法是计算文本的长度，如果文本太长，则调整字体大小。

Answer 1

也许圆形fitbox（来自tcolorbox）可以帮助您。您只需定义框大小并将tcolorbox文本放入其中。只有大于提供的空间的文本才会缩小。

\documentclass{article}
\usepackage[most]{tcolorbox}
\usepackage{lmodern}

\newtcboxfit{\myfitbox}{%
    width = 3cm,
    square,
    circular arc,
    halign = center,
    valign = center,
    nobeforeafter
}


\begin{document}
\myfitbox{This is a long text inside a circular tcolorbox}
%
\myfitbox{This is an ever longer text inside a circular tcolorbox}
%
\myfitbox{This is a much more longer, longer and  longer text inside a circular tcolorbox}
%
\myfitbox{This is a much more longer, longer and  longer text inside a circular tcolorbox. This is a much more longer, longer and  longer text inside a circular tcolorbox}
\end{document}