![algorithm2e 和颜色](https://linux22.com/image/290079/algorithm2e%20%E5%92%8C%E9%A2%9C%E8%89%B2.png)
我正在尝试在算法中为标题的背景添加颜色(使用algorithm2e
)。
我已在.sty文件中直接将原始命令修改如下。
但是,正如您在图片上看到的,结果并不方便。我希望整个“行”都变成灰色(我将行放在括号中,因为它不是表格)。
\newcommand{\algocf@makecaption@ruled}[2]{%
\global\sbox\algocf@capbox{\hskip\AlCapHSkip![enter image description here][2]
\parbox[t]{\hsize}{\colorbox{gray!50}{\algocf@captiontext{#1}{#2}}}}
}%
原本的 :
\newcommand{\algocf@makecaption@ruled}[2]{%
\global\sbox\algocf@capbox{\hskip\AlCapHSkip% .5\algomargin%
\parbox[t]{\hsize}{\algocf@captiontext{#1}{#2}}}
}%
完整代码:
\documentclass{article}
\usepackage{etex}
\usepackage{easybmat}
\usepackage[T1]{fontenc}
\usepackage{lmodern}
\usepackage{xcolor}
\usepackage{algorithm2e}
\RestyleAlgo{algoruled}
\begin{document}
\SetKw{KwFrom}{from}
\newenvironment{algo}{
\begin{algorithm}[H]
\DontPrintSemicolon \SetAlgoVlined}
{\end{algorithm}}
\begin{algo}\label{algotrigsup}
\caption{Caption of the algo}
\For{$k$ \KwFrom $n-1$ \KwTo $1$}{
$x_k=b_k$\;
\For{$j$ \KwFrom $k+1$ \KwTo $n$}{
$x_k=x_k -a_{kj} x_j$\;
}
$x_k=\displaystyle \frac{x_k}{a_{kk}}$
}
\end{algo}
\end{document}
答案1
这是一种可能性(必须\parbox
位于内部\colorbox
并且需要进行一些垂直和水平间距调整):
\documentclass{article}
\usepackage[ruled]{algorithm2e}
\usepackage{xcolor}
\colorlet{AlgCaptionColor}{gray!30}
\makeatletter
\renewcommand{\algocf@makecaption@ruled}[2]{%
\global\sbox\algocf@capbox{\colorbox{AlgCaptionColor}{\hskip\AlCapHSkip% .5\algomargin%
\parbox[t]{\hsize}{\algocf@captiontext{\strut#1}{\strut#2\strut}}\hskip.6\algomargin}}% then caption is not centered
}%
\setlength{\interspacetitleruled}{0pt}%
\makeatother
\begin{document}
\begin{algorithm}[H]
\SetAlgoLined
\KwData{this text}
\KwResult{how to write algorithm with \LaTeX2e }
initialization\;
\While{not at end of this document}{
read current\;
\eIf{understand}{
go to next section\;
current section becomes this one\;
}{
go back to the beginning of current section\;
}
}
\caption{How to write algorithms and some additional text just for the exmaple}
\end{algorithm}
\end{document}