对某些节点的选项（节点中的节点和主节点标签）进行预处理或后处理

Question

为了在节点中设置子节点，我使用以下代码（由 Mark Wibrow 提供）：

\documentclass[border=3mm,
               tikz,
               preview]{standalone}
\makeatletter
\def\tikzsavelastnodename#1{\let#1=\tikz@last@fig@name}
\makeatother

    \begin{document}
\begin{tikzpicture}[
add text/.style args={#1:#2}{append after command =
                {node[rounded corners, fill=blue!10] at (\tikzsavednodename.#1) [anchor=#1] {#2}}
                            },
    box/.style={rectangle, draw, densely dotted, thick,
                text width=3.5cm, minimum height=2.5cm,
                align=center,
                append after command = {\pgfextra{\tikzsavelastnodename\tikzsavednodename}},#1
                },
                    ]
\node[box,
      label=above:label,   % <--- work fine
      add text=north:lorum,
      add text=south west:ipsum,
      add text=east:dolor,
%      label=above:test   % <--- gives error "no shape named is known"
    ]   {main\\ content};
\end{tikzpicture}
    \end{document}

这使：

如果主节点的标签add text在节点选项之前，此代码可以正常工作。出于某些（重要）原因，我喜欢add text在宏之后放置标签。有没有办法在节点定义中告诉必须在节点选项之间最后执行，因此节点选项中的和的add text顺序不再重要？labeladd text

Answer 1

你可以这样做，尽管我完全不清楚你为什么需要这样做，label所以我完全不确定这是否是一个选择。

\documentclass[tikz,multi,border=10pt]{standalone}
% code for sub-nodes (in the non-tikzmark sense) from Mark Wibrow: https://groups.google.com/d/msg/comp.text.tex/yunrzHUfSUk/y3x-QWP7sJ0J
\makeatletter
\def\tikzsavelastnodename#1{\let#1=\tikz@last@fig@name}
\makeatother
\begin{document}
\begin{tikzpicture}
  [
    add text/.style args={#1:#2}{append after command =
      {node [rounded corners, fill=blue!10] at (\tikzsavednodename.#1) [anchor=#1] {#2}}
    },
    my label/.style args={#1:#2:#3}{append after command =
      {node [every label] at (\tikzsavednodename.#1) [anchor=#2] {#3}}
    },
    box/.style={rectangle, draw, densely dotted, thick,
      text width=3.5cm, minimum height=2.5cm,
      align=center,
      append after command = {\pgfextra{\tikzsavelastnodename\tikzsavednodename}},
      #1,
    },
  ]
  \node [box={draw=red},
  label=above:label,   % <--- work fine
  add text=north:lorum,
  add text=south west:ipsum,
  add text=east:dolor,
  my label=south:north:test   % <--- also works
  ]   {main\\ content};
\end{tikzpicture}
\end{document}