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链接两个 tikz 矩阵的列宽

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链接两个 tikz 矩阵的列宽

我有两个图形，一个是 tikzfigure，另一个是矩阵。这两个矩阵是相关的，即具有相同的列，我希望 tikz 为它们分配相同的列宽，就像我在一个矩阵中拥有所有行一样。自动解决方案是理想的，我无需提供手动间距或将一个矩阵标记为模板，即 tikz 应该从所有矩阵中收集间距，然后应用它们（可能需要重新编译）。

那可能吗？

以下代码演示了这个问题

\documentclass{minimal}
\usepackage{tikz}
\begin{document}
Currently I have two matrices, this:

\begin{tikzpicture}
\matrix{
\node{first matrix with long and}; & \node{short column}; \\
\node{second}; & \node{row}; \\
};
\end{tikzpicture}

and this:

\begin{tikzpicture}
\matrix{
\node{second matrix}; & \node{with another column long}; \\
};
\end{tikzpicture}


I want that is that both matrices look as if they were cut out of this combined matrix:

\begin{tikzpicture}
\matrix{
\node{first matrix with long and}; & \node{short column}; \\
\node{second}; & \node{row}; \\
\node{second matrix}; & \node{with another column long}; \\
};
\end{tikzpicture}
\end{document}

渲染示例

在例子中，中间的文本很简单，但在实际例子中，两个矩阵可能位于完全不同的位置，例如两个不同的浮动图形。

答案1

我思考我有一个解决方案。它的工作原理是测量 pgf 矩阵中列的宽度并将其保存到文件中.aux。然后在后续运行中（或后续矩阵的后续运行中），它​​会在开头插入一个额外的行，该行由正确宽度的路径组成。这里有一些技巧可以确保这个额外的行实际上不会做任何方法都可以，但我不能保证这种方法一定有效 - 我通过设置行样式和设置行间距进行了测试。但我的测试并不广泛。

代码如下：

\documentclass{article}
%\url{http://tex.stackexchange.com/q/57871/86}
\thispagestyle{empty}
\usepackage{tikz}

\makeatletter
\pgfkeys{/tikz/save cell widths code/.code={
    \edef\lc@widths{\noexpand\noexpand\noexpand\expandafter\gdef\noexpand\noexpand\noexpand\csname lc@widths@#1@cols\noexpand\noexpand\noexpand\endcsname{\the\pgf@matrix@numberofcolumns}}
    \bgroup
    \foreach \lc@k in {1,...,\pgf@matrix@numberofcolumns} {
      \edef\lc@temp{\noexpand\noexpand\noexpand\expandafter\gdef\noexpand\noexpand\noexpand\csname lc@widths@#1@maxx\lc@k\noexpand\noexpand\noexpand\endcsname{\csname pgf@matrix@maxx\lc@k\endcsname}\noexpand\noexpand\noexpand\expandafter\gdef\noexpand\noexpand\noexpand\csname lc@widths@#1@minx\lc@k\noexpand\noexpand\noexpand\endcsname{\csname pgf@matrix@minx\lc@k\endcsname}}
      \expandafter\expandafter\expandafter\gdef\expandafter\expandafter\expandafter\lc@widths\expandafter\expandafter\expandafter{\expandafter\lc@widths\lc@temp}
    }
    \immediate\write\pgfutil@auxout{\lc@widths}
    \edef\lc@temp{\lc@widths}
    \lc@temp
    \egroup
  }
}

\tikzset{save cell widths/.style={%
    hack end matrix=#1,
    append after command={[save cell widths code=#1]},%
  },
  hack end matrix/.code={%
    \let\lc@matrix=\pgf@matrix@cont
    \def\pgf@matrix@cont{\lc@matrix\lc@use{#1}}%
  }
}

\def\lc@use#1{%
  \@ifundefined{lc@widths@#1@cols}{}{%
    \def\lc@line{}%
    \expandafter\let\expandafter\lc@cols\csname lc@widths@#1@cols\endcsname
    \xdef\lc@line{\noexpand\path (\csname lc@widths@#1@minx1\endcsname,0pt) (\csname lc@widths@#1@maxx1\endcsname,0pt);}
    \foreach \lc@k in {2,...,\lc@cols} {
      \expandafter\gdef\expandafter\lc@line\expandafter{\lc@line\pgfmatrixnextcell}
      \edef\lc@temp{\noexpand\path (\csname lc@widths@#1@minx\lc@k\endcsname,0pt) (\csname lc@widths@#1@maxx\lc@k\endcsname,0pt);}
      \expandafter\expandafter\expandafter\gdef\expandafter\expandafter\expandafter\lc@line\expandafter\expandafter\expandafter{\expandafter\lc@line\lc@temp}

    }
\pgfmathparse{-\pgfmatrixrowsep}
\edef\lc@temp{\noexpand\pgfmatrixendrow[\pgfmathresult pt]}
      \expandafter\expandafter\expandafter\gdef\expandafter\expandafter\expandafter\lc@line\expandafter\expandafter\expandafter{\expandafter\lc@line\lc@temp}
\lc@line
\advance\pgfmatrixcurrentrow by -1\relax
  }
}

\makeatother

\begin{document}
Currently I have two matrices, this:

\begin{tikzpicture}
\matrix[save cell widths=m]{
\node{first matrix with long and}; & \node{short column}; \\
\node{second}; & \node{row}; \\
};
\end{tikzpicture}

and this:

\begin{tikzpicture}
\matrix[save cell widths=m]{
\node{second matrix}; & \node{with another column long}; \\
};
\end{tikzpicture}


I want that is that both matrices look as if they were cut out of this combined matrix:

\begin{tikzpicture}
\matrix[save cell widths=m]{
\node{first matrix with long and}; & \node{short column}; \\
\node{second}; & \node{row}; \\
\node{second matrix}; & \node{with another column long}; \\
};
\end{tikzpicture}

\begin{tikzpicture}
\matrix[nodes={anchor=base},draw,save cell widths=mm,row 2/.style={every node/.style={anchor=base,green}},row sep=1cm] (m) at (0,0) {
\node {a}; & \node {b}; & \node {cde}; \\
\node {a}; & \node {b}; & \node{c}; \\
};
\matrix[nodes={anchor=base},draw,save cell widths=mm] (ma) at (0,-3) {
\node {abc}; & \node {b}; & \node{c}; \\
\node {a}; & \node {b}; & \node{c}; \\
};
\end{tikzpicture}

\begin{tikzpicture}
\matrix[draw,save cell widths=mmm,row sep=1cm] (m) at (0,0) { \node[right] {abcdefgh}; & \node{x}; \\ };
\matrix[draw,save cell widths=mmm] (ma) at (0,-3) { \node[left] {abc}; & \node{x}; \\ };
\end{tikzpicture}
\end{document}

结果如下：

矩阵分裂比对

编辑 2012-06-01根据评论，它现在不再将添加的内容居中，而是直接使用和，maxx从而minx允许单元格内容相对于原点移动（参见代码中的最后一个例子）。

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