在 TikZ 中使用括号连接节点

Question

自动解决方案：

\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{calc,shapes.arrows,decorations.pathreplacing,shadows}

% list of keys
\pgfkeys{/tikz/.cd,
  arrow color/.store in=\arrowcol,
  arrow color=green!80!blue,
  items distance/.store in=\itemdistance,
  items distance=3cm,
  border color/.store in=\bordercol,
  border color=green!80!black,
  fill color/.store in=\fillcol,
  fill color=green!80!lime!20,
  brace color/.store in=\bracecol,
  brace color=green!80!blue,
  brace distance/.store in=\bracedistance,
  brace distance=5pt,
}

% list of styles
\tikzset{my arrow/.style={
    single arrow, draw, minimum height=0.5cm,
    minimum width=0.05cm,
    single arrow head extend=0.1cm
  },
  module/.style={
    rounded corners,
    draw=\bordercol,
    fill=\fillcol,
    minimum height=1cm,
    minimum width=1.5cm,
    general shadow={shadow yshift=-.4ex,opacity=.4, fill=black!50, every shadow}, 
  },
  brace/.style={
    decoration={brace,raise=\bracedistance,amplitude=0.75em},
    decorate,
    draw=\bracecol,
    very thick,    
  }
}

% code able to reproduce arrows between two modules     
\newcommand{\guparrow}{
node[my arrow,top color=\arrowcol!10,bottom color=\arrowcol,midway] {}
}

% braceddiagram:
% #1 options <optional argument>,
% #2 list of items <mandatory>,
% #3 brace comment <mandatory> 
\newcommand{\braceddiagram}[3][]{
  \begin{tikzpicture}[#1]% here we can pass the options for customization
     % counting all the items to be displayed
     \foreach \items [count=\xi] in {#2}{\global\let\maxnumitem\xi}

     % foreach item in the list we are going to compute the distance it should 
     % be placed;
     % then we put the item in a node with the module style: it also gets a 
     % name in the form <module><num-module>
     \foreach \items [count=\xi] in {#2}{%
       \path let 
         \n1={0+\xi*\itemdistance} in
         node[module] (module\xi) at +(\n1,0) {\items};
     }
     % when all items are located we can put the arrows in between: 
     % for this we draw an imaginary path and we put the arrow between nodes; 
     % the path starts from the module on the left and ends in the 
     % subsequent module: we should compute analytically the start and end modules
     \foreach \items [count=\xi] in {#2}{%
       \pgfmathtruncatemacro{\xj}{mod(\xi, \maxnumitem) + 1)}
       \ifnum\xi<\maxnumitem % to not have a path starting from the last module 
                             % directed to the first one
         \path (module\xj) -- (module\xi) \guparrow;
       \fi
     }

     % at the end we draw the brace with the comment
     \draw[brace] (module1.north west)--(module\maxnumitem.north east)
      node[above=3*\bracedistance, midway]{#3};

  \end{tikzpicture}
}


\begin{document}

\braceddiagram[brace distance=4pt]{Bla, Bla, Bla}{Some comment}

\vspace{1cm}

\tikzset{my style for the diagram/.style={
    brace distance=6pt,
    brace color=violet!60!magenta,
    fill color=violet!60!magenta!30,
    border color=violet!60!magenta,
    arrow color=violet!60!magenta,
  }
}

\braceddiagram[my style for the diagram]{Bla, Bla, Bla, Bla}{Some other comment}

\end{document}

结果：

在此处输入图片描述

代码的一些注释

要使用的基本命令是：

\braceddiagram[<options>]{<list of items>}{<comment above brace>}

在其中<list of items>应插入一个逗号分隔的列表：每个列表将以水平方式放置，并且两个列表之间的距离由键items distance(初始值为 3cm) 表示。注意：项目太多可能不适合页面，因此可以减少项目之间的距离或缩放图表。

缩放图表包括引入标准两个选项scale=<factor>和transform shape。例如：

\braceddiagram[scale=0.75,transform shape]{Bla, Bla, Bla, Bla}{Some other comment}

在<options>可选参数中，可以引入常用的 TikZ 选项（如前所述）以及图表的特定键。当需要自定义多个键时，最好创建新样式：

\tikzset{my style for the diagram/.style={
    brace distance=6pt,
    brace color=violet!60!magenta,
    fill color=violet!60!magenta!30,
    border color=violet!60!magenta,
    arrow color=violet!60!magenta,
  }
}

传递给图表：

\braceddiagram[my style for the diagram,thick,scale=0.75,transform shape]{Bla, Bla, Bla, Bla}{Some other comment}

Answer 1