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Longtabu 上方和下方的垂直空间

tag-icon • tag-icon spacing environments longtable tabu
Longtabu 上方和下方的垂直空间

在某种程度上，这是新的表格环境、新环境中的空格和封闭的 { }，@egreg 已经很方便地回答了这个问题。

请编译此 MWE 来查看并跟踪问题：

\documentclass[a4paper, 11pt]{scrbook}
\usepackage{blindtext}
\usepackage[cm]{fullpage}

\usepackage{tabu, longtable, booktabs}
\usepackage{caption}

\newenvironment{texttab}[1]%
        {\setlength{\topsep}{\baselineskip}%
            \begin{center} \tabulinesep=0.6ex%
            \begin{tabu} to 0.9\textwidth {#1} \toprule \rowfont{\bfseries}}
            {\end{tabu}%
        \end{center}}

\newenvironment{tabspaces}[1]%
    {\setlength{\topsep}{\baselineskip}%
        \begin{center} \tabulinesep=0.6ex%
            \begin{longtabu} to 0.9\textwidth {#1} \toprule \rowfont{\bfseries}}
            {\end{longtabu}%
        \end{center}}

\newenvironment{texttab*}[1]%
    {\setlength{\topsep}{\baselineskip}%
    \LTpre=0pt%
    \LTpost=0pt%
        \begin{center} \tabulinesep=0.6ex%
            \begin{longtabu} to 0.9\textwidth {#1} \toprule \rowfont{\bfseries}}
            {\end{longtabu}%
        \end{center}}

\begin{document}
\section{TEST}
\blindtext
%
\begin{texttab}{X[l,2] X[l,2] X[l,3]}
Test1   &   Test2   &   Test3 works fine  \\ \midrule
Test1   &   Test2   &   Test3 works fine  \\
Test1   &   Test2   &   Test3 works fine  \\ \bottomrule
\end{texttab}%
%
\blindtext
%
\begin{tabspaces}{X[l,2] X[l,2] X[l,3]}
Test1   &   Test2   &   Test3   \\ \midrule
Test1   &   Test2   &   Test3   \\
Test1   &   Test2   &   Test3   \\ \bottomrule
\end{tabspaces}%
%
\blindtext
%
\begin{texttab*}{X[l,2] X[l,2] X[l,3]}
Test1   &   Test2   &   Test3   \\ \midrule
Test1   &   Test2   &   Test3   \\
Test1   &   Test2   &   Test3   \\ \bottomrule
\end{texttab*}%
%
\blindtext
\end{document}

我创建了三个新环境：texttab、tabspaces和texttab*。它们在文本中实现tabus （不嵌入浮动体）。根据之前提到的问题，我为普通tabus ( texttab) 或longtabus ( texttab*) 创建了两个环境。tabspaces仅用于演示。

现在，如果你看一下tabspaces环境（示例中的第二个表），你会看到它产生了上方和下方的垂直空间太多环境。

我尝试在 -environment 中使用命令\LTpre=0pt和\LTpost=0pt（由 -package 提供longtable）texttab*- 你看，下面仍然有太多空间！

它是从哪里来的？我该如何摆脱它？

笔记： \tabulinesep=0.6ex似乎会影响这些空间！尽管如此，删除它并不能改变垂直空间仍然与我的（令人满意的）环境中的垂直空间不同的事实texttab。

答案1

\LTpre设置和\LTpost对环境没有影响的原因texttab*是您0pt在该环境的定义中将它们重置为。我删除了这两行并全局设置了一些粗略的值，这些值给出的间距与 产生的间距相似texttab。

在此处输入图片描述

\documentclass[a4paper, 11pt]{scrbook}
\usepackage{blindtext}
\usepackage[cm]{fullpage}

\usepackage{tabu, longtable, booktabs}
\usepackage{caption}
\setlength{\LTpre}{0pt}\setlength{\LTpost}{-17pt}%

\newenvironment{texttab}[1]%
        {\setlength{\topsep}{\baselineskip}%
            \begin{center} \tabulinesep=0.6ex%
            \begin{tabu} to 0.9\textwidth {#1} \toprule \rowfont{\bfseries}}
            {\end{tabu}%
        \end{center}}

\newenvironment{tabspaces}[1]%
    {\setlength{\topsep}{\baselineskip}%
        \begin{center} \tabulinesep=0.6ex%
            \begin{longtabu} to 0.9\textwidth {#1} \toprule \rowfont{\bfseries}}
            {\end{longtabu}%
        \end{center}}

\newenvironment{texttab*}[1]%
    {\setlength{\topsep}{\baselineskip}%
        \begin{center} \tabulinesep=0.6ex%
            \begin{longtabu} to 0.9\textwidth {#1} \toprule \rowfont{\bfseries}}
            {\end{longtabu}%
        \end{center}}

\begin{document}
\section{TEST}
\blindtext
%
\begin{texttab}{X[l,2] X[l,2] X[l,3]}
Test1   &   Test2   &   Test3 works fine  \\ \midrule
Test1   &   Test2   &   Test3 works fine  \\
Test1   &   Test2   &   Test3 works fine  \\ \bottomrule
\end{texttab}%
%
\blindtext
%
\begin{tabspaces}{X[l,2] X[l,2] X[l,3]}
Test1   &   Test2   &   Test3   \\ \midrule
Test1   &   Test2   &   Test3   \\
Test1   &   Test2   &   Test3   \\ \bottomrule
\end{tabspaces}%
%
\blindtext
%
\begin{texttab*}{X[l,2] X[l,2] X[l,3]}
Test1   &   Test2   &   Test3   \\ \midrule
Test1   &   Test2   &   Test3   \\
Test1   &   Test2   &   Test3   \\ \bottomrule
\end{texttab*}%
%
\blindtext
\end{document}

Qrrbrbirlbel 在下面指出，使用\centering而不是center环境是一种选择。我的快速尝试如下。我对 's 做了一些调整，\par以避免上面的线条也居中......我不确定是否有更好的方法可以做到这一点。无论如何，由于 和 的行为不同，tabu我longtabu认为您可能必须调整第一个环境的间距以匹配后两个环境，反之亦然。

\documentclass[a4paper, 11pt]{scrbook}
\usepackage{blindtext}
\usepackage[cm]{fullpage}

\usepackage{tabu, longtable, booktabs}
\usepackage{caption}

\newenvironment{texttab}[1]%
    {\par\bigskip\centering\tabulinesep=0.6ex%
     \begin{tabu} to 0.9\textwidth {#1} \toprule \rowfont{\bfseries}}
    {\end{tabu}\par\bigskip}

\newenvironment{tabspaces}[1]%
    {\par\centering\tabulinesep=0.6ex%
     \begin{longtabu} to 0.9\textwidth {#1} \toprule \rowfont{\bfseries}}
    {\end{longtabu}}

\newenvironment{texttab*}[1]%
    {\par\centering\tabulinesep=0.6ex%
     \begin{longtabu} to 0.9\textwidth {#1} \toprule \rowfont{\bfseries}}
    {\end{longtabu}}

\begin{document}
\section{TEST}
\blindtext

\begin{texttab}{X[l,2] X[l,2] X[l,3]}
Test1   &   Test2   &   Test3 works fine  \\ \midrule
Test1   &   Test2   &   Test3 works fine  \\
Test1   &   Test2   &   Test3 works fine  \\ \bottomrule
\end{texttab}%

\blindtext
%
\begin{tabspaces}{X[l,2] X[l,2] X[l,3]}
Test1   &   Test2   &   Test3   \\ \midrule
Test1   &   Test2   &   Test3   \\
Test1   &   Test2   &   Test3   \\ \bottomrule
\end{tabspaces}%
%
\blindtext
%
\begin{texttab*}{X[l,2] X[l,2] X[l,3]}
Test1   &   Test2   &   Test3   \\ \midrule
Test1   &   Test2   &   Test3   \\
Test1   &   Test2   &   Test3   \\ \bottomrule
\end{texttab*}%
%
\blindtext
\end{document}

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