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在长表中垂直和水平居中文本和图像

tag-icon • tag-icon vertical-alignment longtable includegraphics
在长表中垂直和水平居中文本和图像

我想将文本和图像在长表中垂直和水平居中。但不幸的是，我似乎无法让它工作。下面是一个例子：

\documentclass[11pt,a4paper,english]{article}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{babel}
\usepackage{array,longtable,ragged2e}
\usepackage{graphicx}
 
\begin{document}
       
\begin{longtable}{| l | c | c |}
    \hline
     & Here is a Text & Here is a Text \\\hline
    Here is a Text & \includegraphics[height=2cm]{img/image.png} & \includegraphics[height=2cm]{img/image.png} \\\hline 
    Here is a Text & \raisebox{-\height}{\includegraphics[height=2cm]{img/image.png}} & \raisebox{-\height}{\includegraphics[height=2cm]{img/image.png}} \\\hline               
\caption{My Caption}
\label{tab:FirstTab}
\end{longtable}
\mbox{}\\    
  
\end{document}

我也尝试了下面的更改，但没有帮助：

Here is a Text & \raisebox{-\height}{\includegraphics[height=2cm]{img/image.png}} & \raisebox{-\height}{\includegraphics[height=2cm]{img/image.png}} \\\hline

答案1

一种方法是使用包valign中的宏adjusbox：

\documentclass[11pt,a4paper,english]{article}
\usepackage[T1]{fontenc}
\usepackage{ragged2e}
\usepackage{babel}
\usepackage{array,longtable,makecell}
\usepackage[demo,               % in real document delete 'demo'
            export]{adjustbox}  % it load graphicx too

\begin{document}

\begingroup
\setcellgapes{3pt}
\makegapedcells % add vertical space/above/below cell's content
\begin{longtable}{| l | c | c |}
    \hline
     & Here is a Text & Here is a Text \\\hline
    Here is a Text & \includegraphics[height=2cm,valign=c]{img/image.png} & \includegraphics[height=2cm,valign=c]{img/image.png} \\\hline
    Here is a Text & \includegraphics[height=2cm,valign=c]{img/image.png} & \includegraphics[height=2cm,valign=c]{img/image.png} \\\hline
\caption{My Caption}
\label{tab:FirstTab}
\end{longtable}
\endgroup

\end{document}

在此处输入图片描述

在使用时adjustbox，我们可以includegraphics用\adjustimage以下设置来替换添加确定单元格中图像的位置\adjustboxset：

\documentclass[11pt,a4paper,english]{article}
\usepackage[T1]{fontenc}
\usepackage{ragged2e}
\usepackage{babel}
\usepackage{array,longtable}
\usepackage[demo,               % in real document delete 'demo'
            export]{adjustbox}  % it load `graphicx` too

\begin{document}

\begingroup
\adjustboxset{height=20mm,valign=c, margin=0pt 3pt 0pt 3pt} % <---
\begin{longtable}{| l | c | c |}
    \hline
                & Here is a Text                & Here is a Text                \\
    \hline
Here is a Text  & \adjustimage{}{img/image} & \adjustimage{}{img/image} \\
    \hline
Here is a Text  & \adjustimage{}{img/image} & \adjustimage{}{img/image} \\
    \hline
\caption{My Caption}
\label{tab:FirstTab}
\end{longtable}
\endgroup

\end{document}

其结果与第一个提出的解决方案相同。笔记，上面的 MWE 省略了图形文件扩展名png。如果存在具有不同扩展名的相同图像文件，并且您只想使用其中选定的一个，则它们是必需的。

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