如何水平分割多部分节点？

Question

我想将 tikz shape.multipart 节点拆分为 9 个相等的部分，以绘制 PERT 节点/网络。我可以拆分为三行，但不能拆分为三列。我想将其拆分为三列，每个部分大小相同。

 \documentclass[border=12pt]{standalone}
 \usepackage{tikz} 
 \usetikzlibrary{positioning,shadows,matrix,shapes.multipart}
 \pgfdeclarelayer{foreground}
 \pgfdeclarelayer{background}
 \pgfsetlayers{background,main,foreground}
 \makeatletter
 \def\tikz@extra@preaction#1{
{%
\pgfsys@beginscope%
  \setbox\tikz@figbox=\box\voidb@x%
  \begingroup\tikzset{#1}\expandafter\endgroup%
  \expandafter\def\expandafter\tikz@preaction@layer
  \expandafter{\tikz@preaction@layer}%
  \ifx\tikz@preaction@layer\pgfutil@empty%
  \path[#1];% do extra path
  \else%
  \begin{pgfonlayer}{\tikz@preaction@layer}%
  \path[#1];%
  \end{pgfonlayer}
  \fi%
  \pgfsyssoftpath@setcurrentpath\tikz@actions@path% restore
  \tikz@restorepathsize%
  \pgfsys@endscope%
  }%
 }
 \let\tikz@preaction@layer=\pgfutil@empty
 \tikzset{preaction layer/.store in=\tikz@preaction@layer}
 \makeatother

 \tikzset{
mp/.style = {
rectangle split,
rectangle split parts=3,
rectangle split part fill={#1}, 
% rectangle split horizontal,
% rectangle split parts=3,
draw, rounded corners, text width=2cm,
align=center, text=white,
preaction layer=background,       
drop shadow}
    }

\begin{document}
\begin{tikzpicture}[->,shorten >=1pt,auto,node distance=1cm,thick]
\node (n1) [mp={red,blue,green}]
{
\nodepart[align=left]{one}  1  \\
    \nodepart[align=left]{two}  2 \\
\nodepart[align=left]{three}  3 
};
\end{tikzpicture}
\end{document}

Answer 1

我不会尝试进一步破解多部分节点。相反，使用 似乎更自然matrix。可以使用 进行样式设置path picture。

\documentclass[tikz,border=3mm]{standalone}
\usetikzlibrary{matrix,shadows.blur}
\begin{document}
\begin{tikzpicture}
\matrix[matrix of nodes,column sep=-\pgflinewidth,row sep=-\pgflinewidth,
    inner sep=0pt,draw,very thick,rounded corners,blur shadow,
    path picture={
    \path (path picture bounding box.north west) coordinate(TL) --
     (path picture bounding box.south east)  coordinate(BR) 
     foreach \XX in {0,...,3} {coordinate[pos=\XX/3] (p\XX)};
     \foreach \XX [count=\YY] in {red,blue,green!70!black}
     {\fill[\XX,sharp corners] (TL|-p\the\numexpr\YY-1) rectangle (BR|-p\YY);} 
     \foreach \XX in {1,2}
     {\draw[thick] (TL|-p\XX) -- (BR|-p\XX) (TL-|p\XX) -- (BR-|p\XX); }},
    nodes={text width=2cm,minimum height=1cm,align=center,
     text=white,anchor=center,sharp corners,inner sep=2pt,thin}]
    { 1 & 2 & 3 \\
     1 & 2 & 3 \\
     1 & 2 & 3 \\};
\end{tikzpicture}
\end{document}

可以使用矩阵节点作为一个整体，或者像其他节点一样使用节点的单元来附加箭头等。

\documentclass[tikz,border=3mm]{standalone}
\usetikzlibrary{matrix,shadows.blur,positioning}
\begin{document}
\begin{tikzpicture}
 \matrix[matrix of nodes,column sep=-\pgflinewidth,row sep=-\pgflinewidth,
    inner sep=0pt,draw,very thick,rounded corners,blur shadow,
    path picture={
    \path (path picture bounding box.north west) coordinate(TL) --
     (path picture bounding box.south east)  coordinate(BR) 
     foreach \XX in {0,...,3} {coordinate[pos=\XX/3] (p\XX)};
     \foreach \XX [count=\YY] in {red,blue,green!70!black}
     {\fill[\XX,sharp corners] (TL|-p\the\numexpr\YY-1) rectangle (BR|-p\YY);} 
     \foreach \XX in {1,2}
     {\draw[thick] (TL|-p\XX) -- (BR|-p\XX) (TL-|p\XX) -- (BR-|p\XX); }},
    nodes={text width=2cm,minimum height=1cm,align=center,
     text=white,anchor=center,sharp corners,inner sep=2pt,thin}] (mat)
    { 1 & 2 & 3 \\
     1 & 2 & 3 \\
     1 & 2 & 3 \\};
 \node[right=2em of mat,draw,rounded corners,blur shadow,fill=red!20] (txt){Text};
 \node[below right=1ex and 2em of mat,draw,rounded corners,blur
 shadow,fill=blue!20] (txt2)
 {More Text};
 \draw[-stealth] (mat) -- (txt); 
 \draw[-stealth] (mat-1-3) -| (txt); 
 \draw[-stealth] (mat-3-2) |- (txt2); 
\end{tikzpicture}
\end{document}