formations/presentations/outils/git/gitdags.sty

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2015-07-15 20:52:22 +02:00
%%
%% Copyright (C) 2014 by Julien Cretel <jubobs.tex at gmail.com>
%%
%% This work may be distributed and/or modified under the
%% conditions of the LaTeX Project Public License, either version 1.3
%% 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 1.3 or later is part of all distributions of LaTeX
%% version 2005/12/01 or later.
%%
%% This work has the LPPL maintenance status `maintained'.
%%
%% The Current Maintainer of this work is Julien Cretel.
%%
%% This work currently consists of the file gitdags.sty.
%%
\NeedsTeXFormat{LaTeX2e}[2011/06/27]
\ProvidesClass{gitdags}
[2014/08/28 v0.1 A package for drawing educational Git history graphs]
\DeclareOption*{\PassOptionsToPackage{\CurrentOption}{tikz}}
\ProcessOptions\relax
\RequirePackage{xcolor-solarized}
\RequirePackage{tikz}
\usetikzlibrary{
arrows.meta,
graphs,
positioning,
shadows,
shapes,
}
% conflict color
\colorlet{conflictcolor}{red}
% custom shape, adapted from 102.5.3 in the TikZ 3.0 manual
\pgfdeclareshape{dogeared}{
\inheritsavedanchors[from=rectangle]
\inheritanchorborder[from=rectangle]
\inheritanchor[from=rectangle]{center}
\inheritanchor[from=rectangle]{north}
\inheritanchor[from=rectangle]{south}
\inheritanchor[from=rectangle]{west}
\inheritanchor[from=rectangle]{east}
\backgroundpath{%
\southwest \pgf@xa=\pgf@x \pgf@ya=\pgf@y
\northeast \pgf@xb=\pgf@x \pgf@yb=\pgf@y
\pgf@xc=\pgf@xb \advance\pgf@xc by-5pt
\pgf@yc=\pgf@yb \advance\pgf@yc by-5pt
\pgfpathmoveto{\pgfpoint{\pgf@xa}{\pgf@ya}}
\pgfpathlineto{\pgfpoint{\pgf@xa}{\pgf@yb}}
\pgfpathlineto{\pgfpoint{\pgf@xc}{\pgf@yb}}
\pgfpathlineto{\pgfpoint{\pgf@xb}{\pgf@yc}}
\pgfpathlineto{\pgfpoint{\pgf@xb}{\pgf@ya}}
\pgfpathclose
\pgfpathmoveto{\pgfpoint{\pgf@xc}{\pgf@yb}}
\pgfpathlineto{\pgfpoint{\pgf@xc}{\pgf@yc}}
\pgfpathlineto{\pgfpoint{\pgf@xb}{\pgf@yc}}
\pgfpathclose
}
}
% To cancel a shadow (see http://tex.stackexchange.com/a/198298/21891)
\tikzset{reset preaction/.code={\def\tikz@preactions{}}}
% --- repository history graphs ---
% style definitions
\tikzset{
gitdags node/.style={
draw,
node distance = 1.4em,
drop shadow = {opacity=0.15},
font = \fontfamily{lmtt}\selectfont\small,
},
DAGref/.style={
gitdags node,
shape = rectangle,
minimum height = 1.4em,
draw = solarized-base01,
thick,
font = \fontfamily{lmtt}\selectfont\scriptsize,
},
DAGedge/.style={
semithick,
Latex-,
draw = gray,
},
DAGrefedge/.style={
DAGedge,
thick,
densely dotted,
},
DAGcommit/.style={
gitdags node,
shape = rounded rectangle,
rounded rectangle arc length = 90,
minimum height = 1.6em,
minimum width = 2em,
draw = solarized-base01,
fill = solarized-green!20,
very thick,
},
graphs/DAG/.style={
nodes = DAGcommit,
edges = DAGedge,
branch down = 3em,
grow right sep = 1.5em,
},
gitareas/.style={
gitdags node,
shape = rectangle,
rounded corners = .5em,
minimum width = 7em,
minimum height = 3em,
text opacity = 0.75,
semithick,
},
gitSA/.style={
gitareas,
anchor = north west,
xshift = 1em,
yshift = -1em,
draw = solarized-orange,
fill = solarized-orange!5,
text = solarized-orange,
},
gitWT/.style={
gitareas,
node distance = .6em,
draw = solarized-violet,
fill = solarized-violet!5,
text = solarized-violet,
},
resetarrows/.style={
-Stealth,
dashed,
thick,
draw = solarized-base02,
draw opacity = .75,
},
highlighted commit/.style={
DAGcommit,
reset preaction,
fill opacity = 0,
draw = solarized-base02,
},
problematic commits/.style={
reset preaction,
draw opacity = .25,
fill opacity = .25,
},
graphs/unreachable/.style={
problematic commits,
target edge style = problematic commits,
},
graphs/conflict/.style={
empty nodes,
problematic commits,
target edge style = problematic commits,
draw = conflictcolor,
fill = conflictcolor!25,
},
placeholder commits/.style={
reset preaction,
draw opacity = 0,
fill opacity = 0,
},
graphs/placeholder/.style={
placeholder commits,
target edge style = placeholder commits,
},
blob/.style={
shape = dogeared,
minimum width = 2em,
minimum height = 2.82em,
node distance = .75em,
line join = bevel,
draw = black,
fill = white,
align = left,
font = \ttfamily\tiny,
},
}
% directed acyclic graph
\newcommand\gitDAG[1][]{\graph[DAG,#1]}
% helper macro (let's check the name's availability)
\newcommand\nodename@gitdags{}
% local-branch reference
\newcommand\gitbranch[4][]{%
\renewcommand\nodename@gitdags{#1}%
\if\relax\detokenize{#1}\relax% check for empty optional argument
\renewcommand\nodename@gitdags{#2}%
\fi
\node[
DAGref,
fill = yellow!30,
] (\nodename@gitdags) [#3] {#2};
\draw[DAGrefedge] (#4) -- (\nodename@gitdags);
}
% remote-branch reference
\newcommand\gitremotebranch[4][]{%
\renewcommand\nodename@gitdags{#1}%
\if\relax\detokenize{#1}\relax% check for empty optional argument
\renewcommand\nodename@gitdags{#2}%
\fi
\node[
DAGref,
fill = solarized-blue!20,
] (\nodename@gitdags) [#3] {#2};
\draw[DAGrefedge] (#4) -- (\nodename@gitdags);
}
% tag reference
\newcommand\gittag[4][]{%
\renewcommand\nodename@gitdags{#1}%
\if\relax\detokenize{#1}\relax% check for empty optional argument
\renewcommand\nodename@gitdags{#2}%
\fi
\node[
DAGref,
fill = solarized-magenta!20,
] (\nodename@gitdags) [#3] {#2};
\draw[DAGrefedge] (#4) -- (\nodename@gitdags);
}
% HEAD symbolic reference
\newcommand\gitHEAD[2]{%
\node[
DAGref,
fill = solarized-red!20,
node distance = 1em,
] (gitHEAD) [#1] {HEAD};
\draw[DAGrefedge] (#2) -- (gitHEAD);
}
% the following macro is useful for explaining how merge conflicts arise
\newcommand\gitblob[2][]
{\node[blob,#1] {#2};}
% to highlight a merge conflict arising in a given file
\newcommand\gitblobmc[1]{%
\node[
blob,
draw = conflictcolor,
text = conflictcolor,
font = \scriptsize,
#1] {???};
}
% staging area and worktree
\newcommand\SAandWT{%
\node[
gitSA,
] (stagingarea) at (current bounding box.south east) {staging area};
\node[
gitWT,
below=of stagingarea,
] (workingtree) {working tree};
}
% arrows pointing from a commit to the staging area or working tree
\newcommand\toSAorWT[2]{%
\node[highlighted commit] at (#1) {\phantom{#1}};
\draw[resetarrows] (#1.south) to[out=290, in=170]
([xshift=1em,yshift=-1em]#2.north west);
}
\newcommand\toSAfrom[1]{\toSAorWT{#1}{stagingarea}}
\newcommand\toWTfrom[1]{\toSAorWT{#1}{workingtree}}
\endinput