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tikz-dependency.sty
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tikz-dependency.sty
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% Copyright 2011 by Daniele Pighin
%
% This file may be distributed and/or modified
%
% 1. under the LaTeX Project Public License and/or
% 2. under the GNU Public License.
%
% See the file doc/generic/tikz-dependency/licenses/LICENSE for more details.
%
% Changelog
%
% 1.1 (Jan 17, 2012)
% - Added the possibility to use simple arcs as edges (keys: arc edge/segmented edge)
% - Added "edge start x offset" and "edge end x offset" to fine tune edge start/end point position
% - Added \depstyle to define styles more easily
% - Added "simple" theme, based on the parse on page 1 of [Nivre and McDonald, 2008 ACL-HLT]
% - Added instructions to draw bubble parses
% - Fixed bug that would cause groupedges not to be straight under some circumstances;
%
% 1.0 (Nov 26, 2011)
% - First public release
\ProvidesPackage{tikz-dependency}[2011/01/08 v1.1 Macros to draw dependency trees]
\NeedsTeXFormat{LaTeX2e}[1999/12/01]
\RequirePackage{tikz,environ}
\usetikzlibrary{matrix,arrows,backgrounds,calc,patterns,positioning,fit,shapes}
\pgfdeclarelayer{depgroups}
\pgfsetlayers{depgroups,main}
\newcounter{dt@labelid}
\newif\ifdt@linkbelow
\newif\ifdt@arcedge
\tikzset{
/depgraph/.cd,
/depgraph/.search also = {/tikz},
dep id/.code = {\def\dt@depid{#1}},
dep id = dependency,
% the distant of the horizontal line of the edge style for two adjacent words
edge unit distance/.code = {\pgfmathsetlengthmacro{\dt@linkstep}{#1}},
edge unit distance = 3ex,
% the horizontal offset defining the trapezoidal look
edge slant/.code = {\pgfmathsetlengthmacro{\dt@linkslant}{#1}},
edge slant = 3pt,
% the horizontal offset defining the starting/ending position of the edge style
edge horizontal padding/.code = {\pgfmathsetlengthmacro{\dt@linkoffset}{#1}},
edge horizontal padding = 4pt,
% vertical offset of the edge style from the word
edge vertical padding/.code = {\pgfmathsetlengthmacro{\dt@linkdist}{#1}},
edge vertical padding = 0ex,
% should links be placed above or below the sentence
edge below/.is if = dt@linkbelow,
edge below/.default=true,
edge above/.code = {\dt@linkbelowfalse},
% arc edge
arc edge/.is if = dt@arcedge,
segmented edge/.code = {\dt@arcedgefalse},
arc angle/.store in = \dt@arcangle,
arc angle = 60,
% an explicit offset to compensate the x position of the edge
edge start x offset/.code = {\pgfmathsetlengthmacro{\dt@EdgeStartOffsetX}{#1}},
edge start x offset = 0,
edge end x offset/.code = {\pgfmathsetlengthmacro{\dt@EdgeEndOffsetX}{#1}},
edge end x offset = 0,
% the layer that links should connect
% (should be set to "1" for edge above, and to the number of rows
% in the matrix for edge below)
target layer/.store in = \dt@tgtlayer,
target layer/.default = 0,
target layer = 0,
% styling options
reserved/edge style/.style = {->, >=stealth, black, solid, rounded corners = 2, line cap = round, segmented edge},
edge style/.style = {reserved/edge style/.append style = {#1}},
reserved/label style/.style = {
anchor = mid,
draw, solid,
black,
scale = .7,
text height = 1.5ex, text depth = 0.25ex, % needed to center text vertically
inner sep=.5ex,
outer sep = 0pt,
rounded corners = 2pt,
text = black,
fill = white},
label style/.style = {reserved/label style/.append style = {#1}},
hide label/.style = {reserved/label style/.append style = {opacity = 0, text opacity = 0}},
show label/.style = {reserved/label style/.append style = {opacity = 1, text opacity = 1}},
text only label/.style = {reserved/label style/.append style = {opacity=0, text opacity=1}},
reserved/text style/.style = {
text height=1.5ex, text depth = 0.25ex, % needed to center text vertically
inner sep = .5ex},
text style/.style = {reserved/text style/.append style = {#1}},
% group styling
reserved/group style/.style = {
inner sep = 0,
draw, solid,
outer sep = .5ex,
rounded corners = 2pt},
group style/.style = {reserved/group style/.append style = {#1}},
% themes for text
text theme/.is choice,
text theme/default/.style = {text style={black}},
text theme/brazil/.style = {text style={blue!60!black}},
text theme/iron/.style = {text style={black!80}},
text theme/copper/.style = {text style={brown!60!black}},
text theme/night/.style = {text style={black}},
text theme/grassy/.style = {text style={green!40!black}},
text theme/simple/.style = {text style={black}},
% themes for labels
label theme/.is choice,
label theme/default/.style = {label style={fill=white, draw=black}},
label theme/night/.style = {label style={text=white, fill=black, font=\bfseries}},
label theme/brazil/.style = {label style={thick, black, fill=yellow, text=black, font=\bfseries}},
label theme/iron/.style = {label style={top color=black!60, bottom color=black!80, draw=black!80, text=white, font=\bfseries}},
label theme/copper/.style = {label style={top color=brown!80!pink, bottom color=brown!60!black, draw=brown!80, text=white, font=\bfseries}},
label theme/grassy/.style = {label style={bottom color=green!60!black, top color=green!20!black, draw=green!40!black, text=white, font=\bfseries}},
label theme/simple/.style = {label style={draw=none,fill=none,above,font=\scriptsize}},
% themes for edges
edge theme/.is choice,
edge theme/default/.style = {edge style={thin,black}},
edge theme/night/.style = {edge style={thick}},
edge theme/brazil/.style = {edge style={thick,green!60!black}},
edge theme/iron/.style = {edge style={thick, black!80}},
edge theme/copper/.style = {edge style={thick, brown!80}},
edge theme/grassy/.style = {edge style={thick, green!40!black}},
edge theme/simple/.style = {arc edge, arc angle=79},
% themes styles
theme/.style = {label theme = #1, edge theme = #1, text theme = #1},
}
\newcommand{\depstyle}[2]{\tikzset{#1/.style = {/depgraph/.cd, #2}}}
\newenvironment{dependency}[1][]{%
\begin{tikzpicture}[/depgraph/.cd, #1]
\begin{scope}
}{%
\end{scope}%
\end{tikzpicture}%
}
\NewEnviron{deptext}[1][]{%
\begin{scope}
\matrix (\dt@depid)[%
nodes = {/depgraph/reserved/text style},
column sep = 0,
row sep = -.5ex,
matrix of nodes,
ampersand replacement = \&,
nodes in empty cells,
#1] {
\BODY%
};%
\pgfmathtruncatemacro\dt@tmp{\pgfmatrixcurrentrow}
\xdef\dt@numrows{\dt@tmp}
\end{scope}%
}
\newcommand{\depkeys}[1]{\tikzset{/depgraph/.cd, #1}}
\newcommand{\settgtlayer}{%
\ifnum\dt@tgtlayer=0%
\ifdt@linkbelow%
\pgfmathtruncatemacro{\dt@tgtlayer}{\dt@numrows}%
\else%
\pgfmathtruncatemacro{\dt@tgtlayer}{1}%
\fi%
\fi%
}
\newcommand{\deproot}[3][]{% options, root offset, root reserved/label style
\begin{scope}
\depkeys{#1}
\pgfmathsetmacro{\offa}{#2}
\settgtlayer
\def\anchorpoint{north}
\ifdt@linkbelow
\def\anchorpoint{south}
\fi
\def\source{\dt@depid-\dt@tgtlayer-#2}
\pgfmathsetmacro{\distance}{\dt@linkstep * 4}
\pgfmathsetlengthmacro{\dt@startdist}{\dt@linkdist}
\ifdt@linkbelow
\pgfmathsetmacro{\distance}{-(\dt@linkstep * 4)}
\pgfmathsetlengthmacro{\dt@startdist}{-\dt@startdist}
\fi
\node at (\source) (\rootref) [yshift=\distance, /depgraph/.cd, reserved/label style, #1] {#3};
\draw [/depgraph/.cd, reserved/edge style, #1] (\rootref) -- ($(\source.\anchorpoint) + (0, \dt@startdist)$);
\end{scope}
}
\newcommand{\depedge}[4][]{% options, source offset, target offset, dep name
\begin{scope}
\depkeys{#1}
\pgfmathsetmacro{\offa}{#2}
\pgfmathsetmacro{\offb}{#3}
\settgtlayer
\def\source{\wordref{\dt@tgtlayer}{#2}}
\def\dest{\wordref{\dt@tgtlayer}{#3}}
\def\depname{#4}
\pgfmathsetlengthmacro{\distance}{abs(\offb - \offa)*\dt@linkstep}
\groupedge[#1]{\source}{\dest}{\depname}{\distance}
\end{scope}}
\newlength{\xca}
\newlength{\yca}
\newlength{\xcb}
\newlength{\ycb}
\newcommand{\wordref}[2]{\dt@depid-#1-#2}
\newcommand{\rootref}{\dt@depid-root}
\newcommand{\matrixref}{\dt@depid}
% \storelabelnode
%
% \edef#1 the name of the last reserved/label style, stored in \dt@lastlabel
%
% #1 - a macro
\newcommand{\storelabelnode}[1]{\edef#1{\dt@lastlabel}}
\newcommand{\storefirstcorner}[1]{\edef#1{\dt@lastlabel-edge-first-corner}}
\newcommand{\storesecondcorner}[1]{\edef#1{\dt@lastlabel-edge-second-corner}}
\newcommand{\wordgroup}[5][]{% options, layer, col-start, col-end, identifier
\begin{scope}[/depgraph/.cd, #1]
\pgfonlayer{depgroups}
\node (#5) [fit = (\wordref{#2}{#3}) (\wordref{#2}{#4}), /depgraph/.cd, reserved/group style, #1] {};
\endpgfonlayer
\end{scope}
}
\newcommand{\groupedge}[5][]{% options, source, target, depname, distance
\begin{scope}[/depgraph/.cd, #1]
\def\anchorpoint{north}
\ifdt@linkbelow
\def\anchorpoint{south}
\fi
\pgfextractx{\xca}{\pgfpointanchor{#2}{\anchorpoint}}
\pgfextractx{\xcb}{\pgfpointanchor{#3}{\anchorpoint}}
\pgfextracty{\yca}{\pgfpointanchor{#2}{\anchorpoint}}
\pgfextracty{\ycb}{\pgfpointanchor{#3}{\anchorpoint}}
\pgfmathsetlengthmacro{\ydiff}{\yca-\ycb}
\ifdim\xca>\xcb
\pgfmathsetlengthmacro{\doff}{-\dt@linkoffset}
\pgfmathsetlengthmacro{\dslant}{-\dt@linkslant}
\else
\pgfmathsetlengthmacro{\doff}{\dt@linkoffset}
\pgfmathsetlengthmacro{\dslant}{\dt@linkslant}
\fi
\addtocounter{dt@labelid}{1}
\xdef\dt@lastlabel{\dt@depid-\the\value{dt@labelid}}
\pgfmathsetlengthmacro{\dt@startdist}{\dt@linkdist}
\pgfmathsetlengthmacro{\dt@enddist}{#5}
\ifdt@linkbelow
\pgfmathsetlengthmacro{\dt@startdist}{-\dt@startdist}
\pgfmathsetlengthmacro{\dt@enddist}{-\dt@enddist}
\fi
% Calculate edge anchors. -edge-first-corner and -edge-second-corner are only
% meaningful for segmented edge, but we also draw the nodes for arc edge, someone
% may always find these anchors useful...
\node (\dt@lastlabel-edge-origin) [coordinate] at ($(#2.\anchorpoint) + (\doff,\dt@startdist) + (\dt@EdgeStartOffsetX,0)$) {};
\node (\dt@lastlabel-edge-first-corner) [coordinate] at ($(\dt@lastlabel-edge-origin) + (\dslant,\dt@enddist) + (\dt@EdgeEndOffsetX,0)$) {};
\node (\dt@lastlabel-edge-second-corner) [coordinate] at ($(#3.\anchorpoint) + (-\dslant,\dt@enddist+\dt@startdist+\ydiff)$) {};
\node (\dt@lastlabel-edge-endpoint) [coordinate] at ($(#3.\anchorpoint) + (0,\dt@startdist)$) {};
\ifdt@arcedge
% link above, left to right
\pgfmathsetmacro{\dt@arcin}{180-\dt@arcangle}
\pgfmathsetmacro{\dt@arcout}{\dt@arcangle}
\ifdt@linkbelow
% link below
\pgfmathsetmacro{\dt@arcin}{-\dt@arcin}
\pgfmathsetmacro{\dt@arcout}{-\dt@arcout}
\fi
\ifdim\xca>\xcb
% right to left
\pgfmathsetmacro{\dt@temp}{\dt@arcin}
\pgfmathsetmacro{\dt@arcin}{\dt@arcout}
\pgfmathsetmacro{\dt@arcout}{\dt@temp}
\fi
%\draw [/depgraph/.cd, reserved/edge style, rounded corners = #5/5, #1]
\draw [out=\dt@arcout, in=\dt@arcin,/depgraph/.cd, reserved/edge style, rounded corners = #5/5, #1]
(\dt@lastlabel-edge-origin)
to node (\dt@lastlabel) [/depgraph/.cd, #1, reserved/label style] {#4}
(\dt@lastlabel-edge-endpoint);
\else
\draw [/depgraph/.cd, reserved/edge style, rounded corners = #5/5, #1]
(\dt@lastlabel-edge-origin) --
(\dt@lastlabel-edge-first-corner) --
(\dt@lastlabel-edge-second-corner) --
(\dt@lastlabel-edge-endpoint);
\node (\dt@lastlabel) [/depgraph/.cd, #1, reserved/label style] at
($ .5*(\dt@lastlabel-edge-second-corner) + .5*(\dt@lastlabel-edge-first-corner) $)
{#4};
\fi
\end{scope}
}