Trouvé

J’ai trouvé ma réponse ici.

Voici le code avec une frame que j’avais oublié.

\documentclass[hyperref={pdfpagemode=FullScreen,colorlinks=true},xcolor=table]{beamer}
\usepackage[frenchb]{babel}
\usepackage[utf8x]{inputenc}
 \usepackage{default}
 \usepackage{multicol}
 \usetheme{Warsaw} \setbeamertemplate{headline}{}
 %\usetheme{Berkeley}
 %\usetheme{Marburg}
 \usepackage{tikz}
 \usetikzlibrary{positioning}
 %\usetikzlibrary{calc}
 \begin{document}
 \tikzstyle{every picture}+=[remember picture]
 \tikzstyle{na} = [baseline=-.5ex]
\begin{frame}{exemple}
 \begin{tikzpicture}
 [inner sep=2mm,
 espace/.style={rectangle,draw=blue!50,fill=blue!20,thick},
 depots/.style={rectangle,draw=black!50,fill=black!20,thick},
 index/.style={rectangle,draw=green!50,fill=green!20,thick}]
 \node[espace] (Principe_Espace_de_travail) {Espace de travail};
 \node[index] (Principe_Index) [above=of Principe_Espace_de_travail]{Index};
 \node[depots] (Principe_Depot) [above=of Principe_Index]{Dépôt};
 \node[depots] (Principe_Distant) [right= of Principe_Depot]{Dépôt distant};
 \draw[->] (Principe_Espace_de_travail.100) -- node[auto] {add} (Principe_Index.260);
 \draw[->] (Principe_Index.100) -- node[auto] {commit} (Principe_Depot.260);
 \draw[->] (Principe_Depot.280) to[bend left=70] node[auto] {checkout} (Principe_Espace_de_travail.80);
 %\draw[->] ($(Principe_Depot.east)+(0,1mm)$) -- node[auto] {push} ($(Principe_Distant.west)+(0,1mm)$);
 \draw[->] ([yshift=1mm]Principe_Depot.east) -- node[auto] {push} ([yshift=1mm]Principe_Distant.west);
 \draw[->] ([yshift=-1mm]Principe_Distant.west) -- node[auto] {fetch} ([yshift=-1mm]Principe_Depot.east);
 \end{tikzpicture}
\end{frame}
\end{document}