tikz-qtree：边与节点重叠

Question

我正在使用tikz-qtree包绘制一棵树。节点中有很多文本。我发现很难让边缘与节点的边缘相遇。对于一些包含大量文本的节点，边缘太远了。代码是

\documentclass{minimal}
\usepackage{graphicx}
\usepackage{a4wide}

\usepackage{fullpage}
\usepackage{tikz}

\usetikzlibrary{shapes, positioning, shadows, trees}

\usepackage{tikz-dependency}
\usepackage{tikz-qtree}

\begin{document}
%===================================================

\centering
\begin{tikzpicture}

\tikzset{font=\small,
edge from parent fork down,
level distance=2.7cm,
every node/.style=
{top color=white,
bottom color=blue!10,
rectangle,rounded corners,
%minimum height=8mm,
draw=black,
thick,
align=center,
sibling distance = 4ex,   
%text depth = 0pt
},
edge from parent/.style=
{draw=black,
thick
}}

\Tree [.Morphemes [.Free-standing [.Open-class {cat, chase, dog} ] [.Closed-class {(1) Pronouns; she, him\\(2) Determiners; the, this\\(3) Prepositions; on, at\\(4) Auxilary verbs;\\ \textit{have} done, \textit{is} doing} ] ]
              [.Bound [.Open-class NONE ] [.Closed-class 
              [.Derivational {care-less\\un-wind} ] [.Inflectional {(1) Tense/Agreement marking on verbs;\\He go-es, They laugh-ed\\(2) Plural marking on nouns;\\dog-s, cat-s} ]                 
              ]]
]

\end{tikzpicture}



%====================================================

\end{document}

重叠部分如下。欢迎提供任何提示。

Answer 1

parent您需要描述从节点到的路径child node。我参考了文档第 4 页的最后一个示例tikz-qtree。

代码：

\documentclass{article}
\usepackage{tikz-qtree}
\usetikzlibrary{trees}

\begin{document}
%===================================================

\centering
\begin{tikzpicture}
\tikzset{font=\small,
edge from parent fork down,
level distance=2.7cm,
every node/.style=
{top color=white,
bottom color=blue!10,
rectangle,rounded corners,
%minimum height=8mm,
draw=black,
thick,
align=center,
sibling distance = 4ex,   
%text depth = 0pt
},
edge from parent/.style=
{draw=black,
thick,
% |-|-| here starts the new part
edge from parent path={(\tikzparentnode.south)
-- +(0,-8pt)
-| (\tikzchildnode)}
}}

\Tree [.Morphemes [.Free-standing [.Open-class {cat, chase, dog} ] [.Closed-class {(1) Pronouns; she, him\\(2) Determiners; the, this\\(3) Prepositions; on, at\\(4) Auxilary verbs;\\ \textit{have} done, \textit{is} doing} ] ]
              [.Bound [.Open-class NONE ] [.Closed-class 
              [.Derivational {care-less\\un-wind} ] [.Inflectional {(1) Tense/Agreement marking on verbs;\\He go-es, They laugh-ed\\(2) Plural marking on nouns;\\dog-s, cat-s} ]                 
              ]]
]

\end{tikzpicture}
%====================================================

\end{document}

结果：