如何在Beamer的表格单元格中实现文本垂直居中？

使用Beamer类制作表格时，单元格内的文本会默认呈底部对齐状态。试过多种常见解决方案（包括multicolumn、multirow、parbox、minipage、嵌套tabular环境等）都没有效果，以下是最小复现代码：

\documentclass{beamer}

\usepackage{diagbox}
\usepackage{array}

\begin{document}
   
  \begin{frame}
     \begin{center}
       \vspace{\baselineskip}
       \begin{table}
       \begin{tabular}{|m{3cm}|c|c|}
          \hline
          \diagbox[width=3cm]{Text}{Text} & Text & Text\\
          \hline
          Text & \includegraphics[width=3cm]{example-image-a}  & \includegraphics[width=3cm]{example-image-a} \\
          \hline
          Text & \includegraphics[width=3cm]{example-image-a}  & \includegraphics[width=3cm]{example-image-a} \\
          \hline
       \end{tabular}
       \end{table}
     \end{center}
  \end{frame}

\end{document}

解决方案1：使用adjustbox包调整图片基线 #

加载adjustbox包，将图片的基线对齐到顶部，让文本与图片顶部对齐：

\documentclass{beamer}

\usepackage{diagbox}
\usepackage{array}
\usepackage{adjustbox} % 引入adjustbox包

\begin{document}
   
  \begin{frame}
     \begin{center}
       \vspace{\baselineskip}
       \begin{table}
       \begin{tabular}{|m{3cm}|c|c|}
          \hline
          \diagbox[width=3cm]{Text}{Text} & Text & Text\\
          \hline
          Text & \adjustbox{valign=t}{\includegraphics[width=3cm]{example-image-a}}  & \adjustbox{valign=t}{\includegraphics[width=3cm]{example-image-a}} \\
          \hline
          Text & \adjustbox{valign=t}{\includegraphics[width=3cm]{example-image-a}}  & \adjustbox{valign=t}{\includegraphics[width=3cm]{example-image-a}} \\
          \hline
       \end{tabular}
       \end{table}
     \end{center}
  \end{frame}

\end{document}

解决方案2：改用tabularray包（现代表格工具） #

tabularray包对单元格对齐的支持更直观，无需复杂调整即可实现预期效果：

\documentclass{beamer}

\usepackage{tabularray}
\usepackage{diagbox}

\begin{document}
   
  \begin{frame}
     \begin{center}
       \vspace{\baselineskip}
       \begin{table}
       \begin{tblr}{|m{3cm}|c|c|}
          \hline
          \diagbox[width=3cm]{Text}{Text} & Text & Text\\
          \hline
          Text & \includegraphics[width=3cm]{example-image-a}  & \includegraphics[width=3cm]{example-image-a} \\
          \hline
          Text & \includegraphics[width=3cm]{example-image-a}  & \includegraphics[width=3cm]{example-image-a} \\
          \hline
       \end{tblr}
       \end{table}
     \end{center}
  \end{frame}

\end{document}

解决方案3：重定义array包的m列对齐方式 #

通过重定义m列的行为，强制文本顶部对齐：

\documentclass{beamer}

\usepackage{diagbox}
\usepackage{array}

% 重定义m列为顶部对齐的自定义列类型
\renewcommand{\arraystretch}{1.2} % 可选，调整行高优化显示
\newcolumntype{M}[1]{>{\vtop\bgroup\hsize=#1\arraybackslash}p{#1}<{\egroup}}

\begin{document}
   
  \begin{frame}
     \begin{center}
       \vspace{\baselineskip}
       \begin{table}
       \begin{tabular}{|M{3cm}|c|c|}
          \hline
          \diagbox[width=3cm]{Text}{Text} & Text & Text\\
          \hline
          Text & \includegraphics[width=3cm]{example-image-a}  & \includegraphics[width=3cm]{example-image-a} \\
          \hline
          Text & \includegraphics[width=3cm]{example-image-a}  & \includegraphics[width=3cm]{example-image-a} \\
          \hline
       \end{tabular}
       \end{table}
     \end{center}
  \end{frame}

\end{document}

内容的提问来源于stack exchange，提问作者Leonardo Castro