双列书中的自定义列分隔符

Question

我正在尝试为我的两列书籍类自定义列分隔符。我做了一条简单的Tikz线放在它们之间，但我找不到这样做的方法。这是我的代码的 MWE（我正在编译它，LuaLaTeX因为我希望稍后使用一些其他功能）：

\documentclass[12pt,a5paper,twocolumn,twoside]{book}

\usepackage{geometry}
    \geometry{
        paper = a5paper,
        layout = a5paper,
        layoutsize = {148 mm, 210 mm},
        includehead = true,
        includefoot = true,
        inner = 1.5 cm,
        outer = 1 cm,
        top = 1.5 cm,
        bottom = 1.5 cm,
        columnsep = .6cm,
        twoside = true,
        twocolumn = true,
        showframe = false,
    }
    \setlength{\columnseprule}{0.4pt}

\usepackage{lipsum}

\begin{document}

    \lipsum[1-15]

\end{document}

分隔Tikz符如下：

\begin{tikzpicture}
    \draw[line width = 2pt] (0,0) to (0,-10);
    \fill (0,-10.5) circle (.1);
    \draw[red] (0,-10.5) circle (.3);
    \fill[green, opacity=.3] (0,-10.5) circle (.4);
    \draw[line width = 2pt] (0,-11) to (0,-21);
\end{tikzpicture}

在左边你可以看到我拥有的东西，在右边你可以看到我想要实现的东西：

Answer 1

您可以修补并用您的 Ti\@outputdblcol替换\normalcolor\vrule\@width\columnseprule钾Z 代码：

\documentclass[12pt,a5paper,twocolumn,twoside]{book}

\usepackage{geometry}
    \geometry{
        paper = a5paper,
        layout = a5paper,
        layoutsize = {148 mm, 210 mm},
        includehead = true,
        includefoot = true,
        inner = 1.5 cm,
        outer = 1 cm,
        top = 1.5 cm,
        bottom = 1.5 cm,
        columnsep = .6cm,
        twoside = true,
        twocolumn = true,
        showframe = false,
    }
    \setlength{\columnseprule}{0.4pt}

\usepackage{lipsum}

\usepackage{etoolbox}

\makeatletter
\show\@outputdblcol
\patchcmd\@outputdblcol
  {\normalcolor\vrule\@width\columnseprule}
  {\mydrawcolumnseprule}
  {}{\GenericError{}{Patching \string\@outputdblcol\space failed}{}{}}
\makeatother

\usepackage{tikz}

\newcommand*\mydrawcolumnseprule
  {%
    % giving the lengths in multiples of `\textheight` seems like a good idea
    \begin{tikzpicture}
      \draw[line width = 2pt] (0,0) to (0,-.48\textheight);
      \fill (0,-.5\textheight) circle (.005\textheight);
      \draw[red] (0,-.5\textheight) circle (.01\textheight);
      \fill[green, opacity=.3] (0,-.5\textheight) circle (.015\textheight);
      \draw[line width = 2pt] (0,-.52\textheight) to (0,-\textheight);
    \end{tikzpicture}%
  }

\begin{document}

    \lipsum[1-15]

\end{document}

编辑：以下内容告诉 TeX 其tikzpicture尺寸为零，它将与文本块底部的某个位置对齐，因此您必须在正垂直方向上绘制才能获得相同的结果。

\documentclass[12pt,a5paper,twocolumn,twoside]{book}

\usepackage{geometry}
    \geometry{
        paper = a5paper,
        layout = a5paper,
        layoutsize = {148 mm, 210 mm},
        includehead = true,
        includefoot = true,
        inner = 1.5 cm,
        outer = 1 cm,
        top = 1.5 cm,
        bottom = 1.5 cm,
        columnsep = .6cm,
        twoside = true,
        twocolumn = true,
        showframe = false,
    }
    \setlength{\columnseprule}{0.4pt}

\usepackage{lipsum}

\usepackage{etoolbox}

\makeatletter
\patchcmd\@outputdblcol
  {\normalcolor\vrule\@width\columnseprule}
  {\mydrawcolumnseprule}
  {}{\GenericError{}{Patching \string\@outputdblcol\space failed}{}{}}
\makeatother

\usepackage{tikz}

\newcommand*\mydrawcolumnseprule
  {%
    % giving the lengths in multiples of `\textheight` seems like a good idea
    \begin{tikzpicture}
      \useasboundingbox ; % now the tikzpicture doesn't take up any space
      \draw[line width = 2pt] (0,-.01\textheight) to (0,.48\textheight);
      \fill (0,.5\textheight) circle (.005\textheight);
      \draw[red] (0,.5\textheight) circle (.01\textheight);
      \fill[green, opacity=.3] (0,.5\textheight) circle (.015\textheight);
      \draw[line width = 2pt] (0,.52\textheight) to (0,\textheight);
    \end{tikzpicture}%
  }

\begin{document}

    \lipsum[1-15]

\end{document}