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% ecltree.sty (C) hideki isozaki Nov. 12, 1990
% FMi fix: use \protected@edef instead of \edef (2002/11)
%
% It may be distributed and/or modified under the
% conditions of the LaTeX Project Public License, either version 1.2
% of this license or (at your option) any later version.
% The latest version of this license is in
% http://www.latex-project.org/lppl.txt
% and version 1.2 or later is part of all distributions of LaTeX
% version 1999/12/01 or later.
%
% In this style file, I intentionally didn't use ordinary
% terms such as \tree, \subtree, \leaf etc.
% because I will use different tree macros in one file.
%
% This macro needs epic.sty
% Confirm your epic.sty does not contain \makeatother at EOF.
%
\makeatletter
\typeout{ECL Tree graph macro by isozaki, Nov. 12, 1990 + 2e FIX}
% Ignore End Of Line
\endlinechar=-1\relax
% Dimensions and Boxes : See below
\newdimen\@BundleWidth
\newdimen\@BundleDepth
\newdimen\@BundleHeight
\newbox\@NodeBox
\newdimen\GapDepth
\GapDepth=15\p@
\newdimen\GapWidth
\GapWidth=4\p@
\newdimen\EdgeLabelSep
\EdgeLabelSep=7\p@
%
% --------------- -
% | \@TopLabel | |
% --------------- - |
% (\@SupportX,\@SupportY) | |
% / \ | |
% / \ | |
% / \ | \GapDepth | \@BundleHeight
% / \ | |
% / \ | |
%(\@HandleX,0) \ | |
% -------------- -------------- - -
% | \@NodeBox | | \@NodeBox | | \@BundleDepth
% | | -------------- |
% -------------- -
% |---|
% \GapWidth
%
% |-----------------------------|
% \@PicWidth
%
% The main environment to make a (sub)tree: bundle
% \begin{bundle} \chunk_1 \chunk_2 ... \chunk_n \end{bundle}
%
\def\bundle#1{\leavevmode\hbox\bgroup
\endlinechar=-1
\def\@TopLabel{#1}
\def\@HandleList{}
\def\@EdgeLabels{}
\protected@edef\@EdgeLabelsY{\expandafter\@RemoveDim\the\EdgeLabelSep}
\unitlength=\p@
\@BundleWidth=\z@
\@BundleHeight=\z@
\@BundleDepth=\z@
\ignorespaces}
\def\endbundle{
\advance\@BundleWidth by -\GapWidth
\hskip-\GapWidth
\setbox\@NodeBox=\hbox{\vbox{\null\@TopLabel}}
\advance\@BundleHeight by \GapDepth
\advance\@BundleHeight by \ht\@NodeBox
\advance\@BundleHeight by \dp\@NodeBox
\vrule\@height\@BundleHeight\@width\z@\@depth\@BundleDepth
\protected@edef\@SupportY{\expandafter\@RemoveDim\the\GapDepth}
\protected@edef\@SupportX{\expandafter\@RemoveDim\the\@BundleWidth}
\setbox\@NodeBox=\hbox to \z@{\hss\@TopLabel\hss}
\hskip-\@BundleWidth
\protected@edef\@EdgeLabels{\@EdgeLabels{}}
\protected@edef\@PicWidth{\expandafter\@RemoveDim\the\@BundleWidth}
\@BundleWidth=0.5\@BundleWidth
\protected@edef\@SupportX{\expandafter\@RemoveDim\the\@BundleWidth}
\@DrawBundle}
\def\@DrawBundle{
\begin{picture}(\@PicWidth,0)(0,0)
\protected@edef\@HandleList{\expandafter\@cdr\@HandleList\@nil}
\@for\@HandleX:=\@HandleList\do{
\@DrawLine(\@SupportX,\@SupportY)(\@HandleX,0)
\put(\@HandleX,\@EdgeLabelsY){
\makebox(0,0){\expandafter\@car\@EdgeLabels\@nil}}
\protected@edef\@EdgeLabels{\expandafter\@cdr\@EdgeLabels\@nil}}
\put(\@SupportX,\@SupportY){\raise\dp\@NodeBox\box\@NodeBox}
\end{picture}\egroup}
%
% \chunk[#1]{#2} means a leaf or a subtree.
% #1 ... Label for the edge which connects the leaf or the subtree
% with its parent node. (optional argument)
% #2 ... Label for the leaf or the subtree
%
\def\chunk{\@ifnextchar[{\@chunk}{\@chunk[]}}
\def\@chunk[#1]#2{\protected@edef\@EdgeLabels{\@EdgeLabels{#1}}
\setbox\@NodeBox=\vtop{\null\hbox{#2}}
\advance\@BundleWidth by 0.5\wd\@NodeBox
\ifnum\@BundleDepth<\dp\@NodeBox
\@BundleDepth=\dp\@NodeBox\fi
\protected@edef\@HandleList{\@HandleList,
\expandafter\@RemoveDim\the\@BundleWidth}
\advance\@BundleWidth by 0.5\wd\@NodeBox
\advance\@BundleWidth by \GapWidth
\box\@NodeBox\hskip\GapWidth
\ignorespaces}
% To change line attribute
% ex.
% \drawwith{\path} ... efficient solid line defined by eepic.sty
% \drawwith{\dashline{2}}
\def\drawwith#1{\def\@DrawLine{#1}}
% Default
\drawwith{\drawline}
% Ordinary catcode for p and t is 11
% Application of \the to dimen generates text such as 1.0pt.
% This pt's catcode is 12.
{\catcode`\p=12 \catcode`\t=12
\gdef\@RemoveDim#1pt{#1}}
% Restore original End Of Line
\endlinechar=13\relax
\endinput
|
