与 TikZ 关联的项目列表

Question

我试图绘制一个项目列表，而不是 unline itemize，其中所有点都由垂直线连接。换句话说，我的目标是一种垂直时间轴，但没有日期。事实上，我已经从 TikZ 答案中窃取灵感，我的意思是从中汲取灵感如何创建垂直时间线？，但我有两个主要问题：

1. 列表项超出了页面限制，但它们应该保留在页面内，就像实际的itemize
2. 列表项目前不接受\par，\\虽然我需要支持这些

以下是我目前所掌握的信息：

\documentclass{article}

\usepackage{environ,tikz}
\usetikzlibrary{calc,matrix,backgrounds}

\makeatletter
\let\matamp=&
\catcode`\&=13
\def&{%
  \iftikz@is@matrix%
  \pgfmatrixnextcell%
  \else%
  \matamp%
  \fi%
}
\makeatother
    
\newcounter{lines}
\def\endlr{\stepcounter{lines}\\}

\newcounter{vtml}
\setcounter{vtml}{0}

\tikzset{
  description/.style={column 2/.append style={#1}},
  timeline color/.store in=\vtmlcolor,
  timeline color=red!80!black,
  timeline color st/.style={fill=orange,draw=green},
  line offset/.store in=\lineoffset,
  line offset=4pt,
}

\NewEnviron{vtimeline}[1][]{%
  \setcounter{lines}{1}%
  \stepcounter{vtml}%
  \begin{tikzpicture}[%column 1/.style={anchor=east},
    column 1/.style={anchor=west},
    text depth=0pt,text height=1ex,
    row sep=1ex,
    column sep=1em,
    #1
    ]
    \matrix(vtimeline\thevtml)[matrix of nodes]{\BODY};
    \pgfmathtruncatemacro\endmtx{\thelines-1}

    \foreach \x in {1,...,\endmtx}{
      \node[circle,timeline color st, inner sep=0pt, minimum size=10pt, line width=.75mm]
      (vtimeline\thevtml-c-\x) at
      ($(vtimeline\thevtml-\x-1.west) + (-1ex, 0)$){};
    }

    \begin{scope}[on background layer]
      \draw[blue, line width=1mm] (vtimeline\thevtml-c-1.center) -- (vtimeline\thevtml-c-\endmtx.center);
    \end{scope}
  \end{tikzpicture}
}

\begin{document}

\begin{vtimeline}%[row sep=4ex]
  This is a very long sentence, hopefully it will generate a new line, otherwise I will have to keep writing nonsense on and on and on and on\endlr
  Xerox Palo Alto Research Centre envisage the `Dynabook'\endlr
  Busicom 'Handy-LE' Calculator\endlr
  First mobile handset invented by Martin Cooper\endlr
  Parker Bros. Merlin Computer Toy\endlr
  Osborne 1 Portable Computer\endlr
  Grid Compass 1100 Clamshell Laptop\endlr
  TRS-80 Model 100 Portable PC\endlr
  Psion Organiser Handheld Computer\endlr
  Psion Series 3 Minicomputer\endlr
\end{vtimeline}

\end{document}

你对下一步有什么建议吗？提前谢谢！

PS 我知道我选择的颜色很难看，事实上它们是临时的，只是为了测试目的。此外，我真的很想能够使用 TikZ 来实现这一点，因为这是更复杂的事情的第一步，如果没有 TikZ，我不知道该怎么做。

Answer 1

我不知道这个想法是否足够。问题是逗号是列表分隔符；您不能在项目中直接使用它，但可以使用花括号，即{,}（参见示例）。

注意，项目之间的距离是相同的。您可以通过node distance值来控制它。此外，您还可以使用\\在项目内部换行。

代码

\documentclass[11pt, margin=5mm]{standalone}
\usepackage{tikz}
\usetikzlibrary{math, arrows.meta}
\usetikzlibrary{positioning}
\begin{document}

\newcommand{\linedlist}[1]{\noindent%
  \begin{tikzpicture}[every node/.style={node distance = 6ex and 1.5ex}]
    \node[anchor=west] at (0, 0) (S-0) {};
    \tikzmath{ integer \nbPoints; }
    \foreach \s [count=\i from 1, evaluate=\i as \j using {int(\i-1)}]
    in {#1}{%
      \node[below=of S-\j.south west, anchor=west, align=left] (S-\i) {\s};
      \node[left=of S-\i,
      draw=red, circle, shade, ball color=red,
      outer sep=0, inner sep=.65ex] (N-\i) {};
      \pgfextra{\xdef\nbPoints{\i}}
    }
    \foreach \i [parse=true, evaluate=\i as \j using {int(\i+1)}]
    in {1, ..., \nbPoints -1}{%
      \draw[thick] (N-\i) -- (N-\j);
    }
  \end{tikzpicture}
}

\linedlist{
  If you can't explain it to a six year old{,}
  you don't \\
  understand it yourself.,
  The important thing is to not stop questioning.,
  Look deep into nature{,} and then you will \\
  understand everything better.,
  A happy man is too satisfied with the present \\
  to dwell too much on the future.
}
\end{document}