从包含的tikz节点推断rmarkdown的小页面的大小 [英] Infering the size of a minipage from the containing tikz node for rmarkdown

问题描述

这是在rmarkdown的tikz节点标签中使用项目符号列表.我有一些TikZ代码在纯LaTex中可以正常工作，但在将其传输到出现错误! LaTeX Error: Something's wrong--perhaps a missing \item.的rmarkdown时却不能正常工作.这在答案中得到了解决在tmark的rmarkdown中的tikz的节点标签中，但是应用我在那里得到的解决方案时又出现了另一个问题.

This is a follow-up question to Using bullets list in tikz's node label in rmarkdown. I had some TikZ code that works fine in pure LaTex but NOT when I transport it to rmarkdown where the error ! LaTeX Error: Something's wrong--perhaps a missing \item. is raised. This was solved in the answer to Using bullets list in tikz's node label in rmarkdown but another issue arises applying the solution I got in there.

您可以参考原始问题(在rmarkdown的tikz节点标签中使用项目符号列表)，但基本上我有一些TikZ代码，可将图片用作更大的rmarkdown文件的一部分.正如我在 https://www.overleaf.com/上进行的测试一样，它可以在LaTex中工作在rmarkdown中，它将引发缺少的项目错误.在在tikz节点中使用项目符号列表的拟议解决方案rmarkdown中的标签是要在rmarkdown中添加一个\minipage环境(请参见下面的代码).

You can refer to the original question (Using bullets list in tikz's node label in rmarkdown) but basically I have some TikZ code for pictures to be used as part of a larger rmarkdown file. It works in LaTex as I tested in on https://www.overleaf.com/ but once in rmarkdown, it raises the missing item error. The proposed solution in Using bullets list in tikz's node label in rmarkdown was to add a \minipage environment in rmarkdown (see the code below).

我在使用\minipage环境时遇到的问题是，在创建应该是a的一部分的节点之前，我将不得不手动设置其宽度(或者至少我不知道如何自动执行此操作) TikZ大图片.换句话说，我需要知道为每个节点分配的空间，以重现rmarkdown中的图片.我想知道是否有一种方法可以预先推断节点的大小，以便我可以创建一个与其所包含的节点大小匹配的小页面.

My problem with the use of the \minipage environment is that I will have to manually set its width (or at least I don't know how to automate this) before creating the node which is supposed to be part of a large TikZ picture. In other words, I need to know the allocated space for each node to reproduce the picture in rmarkdown. I was wondering whether there is a way to infer the size of the node in advance, so that I can create a minipage matching the size of the node it will contain.

\documentclass{article}

\usepackage{tikz}
\usepackage{enumitem}

\begin{document}
\definecolor{BulletsColor}{rgb}{0, 0, 0.9}
\newlist{myBullets}{itemize}{1}

\setlist[myBullets]{
  label=\textcolor{BulletsColor}{\textbullet},
  leftmargin=*,
  topsep=0ex,
  partopsep=0ex,
  parsep=0ex,
  itemsep=0ex,
  before={\color{BulletsColor}\itshape}
}


\begin{tikzpicture}
  \node[draw, rounded corners] (a)  {
    \begin{minipage}{2.5cm}
      p
      \begin{myBullets}
      \item first item
      \item second item
      \end{myBullets}
    \end{minipage}
  }
  ;
  \end{tikzpicture}
\end{document}

我也愿意接受其他解决方案，只要我不必手动指定节点的大小即可.例如，做(注意注释行)

I am also open to other solutions as long as I will NOT have to specify the size of my nodes manually. For example doing (note the commented lines)

\begin{tikzpicture}
  \node[draw, rounded corners] (a)  {
    % \begin{minipage}{2.5cm}
      p
      \begin{myBullets}
      \item first item
      \item second item
      \end{myBullets}
    % \end{minipage}
  }
  ;
  \end{tikzpicture}

TikZ中的

将根据其文本大小推断出节点的大小，而我正在寻找可以使我在rmarkdown中使用相同代码的东西，而不必手动指定节点上每个小页面的大小.

in TikZ will infer the size of the node from its text size and I am looking for something that allows me to use the same code in rmarkdown without having to manually specify the size of each minipage across my nodes.

推荐答案

您可以使用同名程序包中的varwidth环境替换minipage:

You could replace minipage with the varwidth environment from the package of the same name:

\documentclass{article}

\usepackage{tikz}
\usepackage{enumitem}

\usepackage{varwidth}


\begin{document}
\definecolor{BulletsColor}{rgb}{0, 0, 0.9}
\newlist{myBullets}{itemize}{1}

\setlist[myBullets]{
  label=\textcolor{BulletsColor}{\textbullet},
  leftmargin=*,
  topsep=0ex,
  partopsep=0ex,
  parsep=0ex,
  itemsep=0ex,
%  before={\color{BulletsColor}\itshape}
}


\begin{tikzpicture}
  \node[draw, rounded corners, font=\itshape, text=BulletsColor] (a)  {
    \begin{varwidth}{\textwidth}
      p
      \begin{myBullets}
      \item \textcolor{BulletsColor}{first item}
      \item \textcolor{BulletsColor}{second item}
      \end{myBullets}
    \end{varwidth}
  }
  ;
  \end{tikzpicture}
\end{document}

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