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TikZ 思维导图中的超链接节点

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TikZ 思维导图中的超链接节点

我正在尝试制作一个小的思维导图，以便一些子节点可以超链接。我尝试遵循给出的建议这里，关于新的节点样式hyperlink node，但以下MWE编译时出现错误。

为了阐明 MWE 的结构，它首先定义样式hyperlink node，然后在行中使用

  node[concept, hyperlink node=www.google.com] {practical}

以下是 MWE（改编自这里)：

\documentclass{article}
\usepackage[hidelinks]{hyperref}

\usepackage{tikz}
\usetikzlibrary{mindmap,trees}

\begin{document}
\pagestyle{empty}
\tikzset{
    hyperlink node/.style={
        alias=sourcenode,
        append after command={
            let     \p1 = (sourcenode.north west),
                \p2=(sourcenode.south east),
                \n1={\x2-\x1},
                \n2={\y1-\y2} in
            node [inner sep=0pt, outer sep=0pt,anchor=north west,at=(\p1)] {\hyperlink{#1}{\phantom{\rule{\n1}{\n2}}}}
        }
    }
}
\begin{tikzpicture}
  \path[mindmap,concept color=black,text=white]
    node[concept] {Computer Science}
    [clockwise from=0]
    child[concept color=green!50!black] {
      node[concept, hyperlink node=www.google.com] {practical}
      [clockwise from=90]
      child { node[concept] {algorithms} }
      child { node[concept] {data structures} }
      child { node[concept] {pro\-gramming languages} }
      child { node[concept] {software engineer\-ing} }
    }  
    child[concept color=blue] {
      node[concept] {applied}
      [clockwise from=-30]
      child { node[concept] {databases} }
      child { node[concept] {WWW} }
    }
    child[concept color=red] { node[concept] {technical} }
    child[concept color=orange] { node[concept] {theoretical} };
\end{tikzpicture}\end{document}

如果能得到关于如何使 TikZ 中的思维导图可超链接的建议或帮助解决此问题，我们将不胜感激。

答案1

最快的解决方法是直接将其放入节点内部\hyperlink，例如：

node[concept] {\hyperlink{pract}{practical}}

这不会改变concept风格的外观。

代码：

\documentclass{article}
\usepackage[hidelinks]{hyperref}

\usepackage{tikz}
\usetikzlibrary{mindmap}

\begin{document}
\pagestyle{empty}

\begin{tikzpicture}
  \path[mindmap,concept color=black,text=white]
    node[concept] {Computer Science}
    [clockwise from=0]
    child[concept color=green!50!black] {
      node[concept] {\hyperlink{pract}{practical}}
      [clockwise from=90]
      child { node[concept] {algorithms} }
      child { node[concept] {data structures} }
      child { node[concept] {pro\-gramming languages} }
      child { node[concept] {software engineer\-ing} }
    }  
    child[concept color=blue] {
      node[concept] {applied}
      [clockwise from=-30]
      child { node[concept] {\hyperlink{datab}{databases}} }
      child { node[concept] {WWW} }
    }
    child[concept color=red] { node[concept] {technical} }
    child[concept color=orange] { node[concept] {theoretical} 
    };
\end{tikzpicture}
\newpage
\begin{itemize}
\item \hypertarget{pract}{Practical}: here is some description.
\item \hypertarget{datab}{Databases}: here is some description.
\end{itemize}
\end{document}

答案2

在这个解决方案中，我使用path picture而不是append after command。

（注意：超链接始终是一个矩形区域......）

\documentclass{article}
\usepackage[hidelinks]{hyperref}

\usepackage{tikz}
\usetikzlibrary{mindmap,trees,calc}

\begin{document}
\pagestyle{empty}
\tikzset{
    hyperlink node/.style={
      postaction={
        path picture={
          \path let
          \p1 = (path picture bounding box.south west),
          \p2 = (path picture bounding box.north east),
          \p3 = (\x2-\x1,\y2-\y1)
          in
          (path picture bounding box.center)
          node[inner sep=0pt,anchor=center,outer sep=0pt]
          {\hyperlink{#1}{\phantom{\rule{\x3}{\y3}}}};
        }
      },
    },
}
\begin{tikzpicture}
  \path[mindmap,concept color=black,text=white]
    node[concept] {Computer Science}
    [clockwise from=0]
    child[concept color=green!50!black] {
      node[concept, hyperlink node=www.google.com] {practical}
      [clockwise from=90]
      child { node[concept] {algorithms} }
      child { node[concept] {data structures} }
      child { node[concept] {pro\-gramming languages} }
      child { node[concept] {software engineer\-ing} }
    }  
    child[concept color=blue] {
      node[concept] {applied}
      [clockwise from=-30]
      child { node[concept] {databases} }
      child { node[concept] {WWW} }
    }
    child[concept color=red] { node[concept] {technical} }
    child[concept color=orange] { node[concept] {theoretical} };
\end{tikzpicture}
\end{document}

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