问题描述
我有一个复杂的longtable，其中包含多层嵌套表格环境。为了使文本在单元格内换行并使内容在顶部对齐，我使用\parbox [t] [] [t]，但是，计算出parbox的高度时没有任何边距，因此以下\hline与文本。
I have a complicated longtable with several levels of nested tabular environments. To get text wrapping inside cells and have the contents aligned at the top I use \parbox[t][][t], however, the height of the parbox is computed without any margin such that the following \hline overlaps with the text.
重现此行为的最小示例是
A minimal example to reproduce this behavior is
\documentclass{article}
\begin{document}
\begin{tabular} {|p{0.2\textwidth}|}
\hline
This cell looks good. \\
\hline
\parbox[t][][t]{1.0\linewidth}{
Not so happy with this.
} \\
\hline
\end{tabular}
\end{document}
这将产生以下输出（抱歉，无法发布图像）：
This produces the following output (sorry, can't post images yet):image of generated output
当然，没有理由使用parbox在上面的示例中，但我在实际文档中需要它们。
Of course, there is no reason to use a parbox in example above, but I need them in the actual document.
我想避免提供parbox的高度（例如\parbox [t] [5cm ] [t]）。有没有一种干净的方法可以在parbox的底部或hline之前添加边距？
I would like to avoid providing the height of the parbox (such as \parbox[t][5cm][t]). Is there a clean way to add a margin either to the bottom of a parbox or before an hline?
推荐答案
很抱歉回答我自己的问题，但是我找到了一个解决方案，方法是在parbox的外部的每个单元格中添加vspace。
Sorry to answer my own question, but I have found a solution by adding vspace to each cell outside the parbox.
以下是代码：
\documentclass{article}
\begin{document}
\newcommand{\pb}[1]{\parbox[t][][t]{1.0\linewidth}{#1} \vspace{-2pt}}
\begin{tabular} {|p{0.2\textwidth}|}
\hline
This cell looks good. \\
\hline
\pb{
Now I'm happy with this.
} \\
\hline
\end{tabular}
\end{document}
输出：
我之前错过了，因为我在parbox的右花括号和vspace之间没有空格。事实证明，空间至关重要。
I missed that before because I didn't have a space between the closing brace of the parbox and the vspace. Turns out that space is crucial.
这篇关于包含parbox的单元格的垂直间距的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！