featuretree.tex

\usetikzlibrary{angles,shadows.blur,positioning,backgrounds}
\usepackage{forest}
\forestset{
  declare boolean register=legend,
  legend=true,
  declare count register=disjuncts from,
  disjuncts from'=0,
  declare count register=concrete from,
  concrete from'=2,
  concrete colour/.code={\colorlet{concretecol}{#1}},
  abstract colour/.code={\colorlet{abstractcol}{#1}},
  draw colour/.code={\colorlet{drawcol}{#1}},
  concrete colour=gray,
  abstract colour=white,
  draw colour=black,
  /tikz/mandatory/.style={circle, fill=drawcol, draw=drawcol},
  /tikz/optional/.style={circle, draw=drawcol, fill=white},
  /tikz/concrete/.style={fill=concretecol, draw=drawcol, align=center},
  /tikz/abstract/.style={fill=abstractcol, draw=drawcol, align=center},
  /tikz/or/.style={},
  /tikz/xor/.style={},
  mandatory/.style={edge label={node [mandatory] {}}},
  optional/.style={edge label={node [optional] {}}},
  multi/.style={text height=#1*4.5ex, text depth=.5ex},
  multi/.default=1,
  %% relation/.style={
  %%   %if={#1==xor}{
  %%     #1
  %%   %}{
  %%   %  for first={
  %%   %    tikz+={
  %%   %      \path (.parent) coordinate (A) -- (!u.children) coordinate (B) -- (!ul.parent) coordinate (C) pic [angle radius=20pt,fill=drawcol] {angle};
  %%   %    }
  %%   %  }
  %%   %}
  %% },
  %relation/.default=or,
  or/.style={
    for first={
    tikz+={
      \path (.parent) coordinate (A) -- (!u.children) coordinate (B) -- (!ul.parent) coordinate (C) pic [angle radius=15pt, fill=drawcol] {angle};
    }}
  },
  xor/.style={
    for first={
    tikz+={
      \path (.parent) coordinate (A) -- (!u.children) coordinate (B) -- (!ul.parent) coordinate (C) pic [angle radius=15pt, draw=drawcol] {angle};
    }}
  },
  disjunction tree/.style={
    where={isodd(n_children())}{
      for n={int((n_children()+1)/2)}{calign with current},
    }{
      calign=midpoint,
    },
    before typesetting nodes={
      %% for nodewalk={
      %%   filter/.wrap pgfmath arg={{level>=##1}{n_children()>1}}{(disjuncts_from)}
      %% }{
      %%   %relation=xor,
      %% },
      where={level()>=(concrete_from)}{
        concrete,
      }{
        abstract,
      },
      % Legend
      %% where={(legend)}{
      %%  legend=false,
      %%  tikz+={
      %%   [font=\sffamily]
      %%   \node (l) [anchor=north west, xshift=10pt] at (current bounding box.north east) {Legend};
      %%   \foreach \i/\j [remember=\i as \k (initially l)] in {mandatory/Mandatory,optional/Optional,or/Or,xor/Xor,abstract/Abstract,concrete/Concrete}
      %%   {
      %%     \node (\i) [below=20pt of \k.north, anchor=north, text centered, \i, minimum width=5pt,] {};
      %%     \node (\j) [right=15pt of \i.center -| mandatory.west, anchor=west] {\j};
      %%   };
      %%   \draw [drawcol] (xor.south west) coordinate (A) -- (xor.north) coordinate (B) -- (xor.south east) coordinate (C) pic [draw=drawcol, angle radius=5pt] {angle};
      %%   \draw [drawcol] (or.south west) coordinate (A) -- (or.north) coordinate (B) -- (or.south east) coordinate (C) pic [fill=drawcol, angle radius=5pt] {angle};
      %%   \foreach \i in {mandatory,optional} \draw [darkgray] (\i.north east) -- +(45:5pt);
      %%   \node (c) [below=0pt of Concrete.south] {};
      %%   \scoped[on background layer]{\node [draw, fill=white, blur shadow, fit=(l) (Mandatory) (Optional) (Or) (Xor) (Abstract) (Concrete) (c), rounded corners] {};}
      %% },
      %% }{},
    },
    for tree={
      parent anchor=children,
      child anchor=parent,
      l'+=4mm,
      blur shadow,
      rounded corners,
      text height=2ex,
      text depth=.5ex,
      font=\sffamily,
    },
  },
}


\DeclareRobustCommand\mytikzdot{\tikz \fill[black] (1ex,1ex) circle (1ex);}
\DeclareRobustCommand\mytikzxor{\begin{tikzpicture}
\node[] (xor)                      {};
\draw [drawcol] (xor.south west) coordinate (A) -- (xor.north) coordinate (B) -- (xor.south east) coordinate (C) pic [draw=darkgray, angle radius=5pt] {angle};
\end{tikzpicture}
}
\DeclareRobustCommand\mytikzmandatory{\begin{tikzpicture}
\node[circle, fill=darkgray, minimum size=1.5ex,inner sep=0pt] (mandatory)                      {};
\draw [darkgray] (mandatory.north east) -- +(45:3pt);
\end{tikzpicture}
}
\DeclareRobustCommand\mytikzoptional{\begin{tikzpicture}
\node[circle, draw=darkgray, minimum size=1.5ex,inner sep=0pt] (mandatory)                      {};
\draw [darkgray] (mandatory.north east) -- +(45:3pt);
\end{tikzpicture}
}
\DeclareRobustCommand\mytikzor{\begin{tikzpicture}
\node[] (or)                      {};
\draw [drawcol] (or.south west) coordinate (A) -- (or.north) coordinate (B) -- (or.south east) coordinate (C) pic [fill=darkgray, angle radius=5pt] {angle};
\end{tikzpicture}
}