是否可以改变 algorithm2e 的框规则厚度

Question

是否可以自定义algorithm2e浮点数的装箱规则宽度和颜色？

\documentclass{article}

\usepackage{algorithm2e}

\begin{document}
% \RestyleAlgo{boxed}
\RestyleAlgo{boxruled}
\LinesNumbered
\begin{algorithm}[ht]
  \caption{My algorithm\label{alg}}
  Statement
\end{algorithm}
\end{document}

Answer 1

我不确定这是否会意外地破坏其他东西......

\documentclass{article}

\usepackage{xcolor,regexpatch}
\usepackage[linesnumbered]{algorithm2e}

\begin{document}

\begin{algorithm}
  \caption{My algorithm}
  Statement
\end{algorithm}

\makeatletter
\newlength{\algorithmboxrule}
\setlength{\algorithmboxrule}{2pt}

\newcommand{\algorithmboxcolor}{orange}

\xpatchcmd*{\algocf@caption@boxruled}{0.8pt}{2\algorithmboxrule}{}{}
\xpatchcmd*{\algocf@caption@boxruled}{\vrule}{\vrule width \algorithmboxrule}{}{}
\xpatchcmd{\algocf@caption@boxruled}{\hrule}{\hrule height \algorithmboxrule}{}{}
\xpretocmd{\algocf@caption@boxruled}{\color{\algorithmboxcolor}}{}{}
\setlength{\fboxsep}{\dimexpr\fboxsep+\fboxrule-\algorithmboxrule}
\setlength{\fboxrule}{\algorithmboxrule}
\makeatother

\RestyleAlgo{boxruled}
\begin{algorithm}
  \caption{My algorithm}
  Statement
\end{algorithm}

\makeatletter
\xpatchcmd{\@algocf@post@boxed}{\framebox}{\color{\algorithmboxcolor}\framebox}{}{}
\makeatother

\RestyleAlgo{boxed}
\begin{algorithm}
  \caption{My algorithm}
  Statement
\end{algorithm}

\end{document}

请注意，算法框是使用\fbox（或\framebox）设置的。因此，在必要时对\fboxsep和/或\fboxrule进行了调整。但是，这可能会影响您使用 的其他位置\fbox。