Add presentation slides from 2012-01-25

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+% vim:ts=4:sw=4:expandtab
+% © 2012 Michael Stapelberg
+%
+% use xelatex %<
+%
+\documentclass[xetex,serif,compress]{beamer}
+\usepackage{fontspec}
+\usepackage{xunicode} % Unicode extras!
+\usepackage{xltxtra}  % Fixes
+\usepackage{listings}
+\setmainfont{Trebuchet MS}
+\setmonofont{Inconsolata}
+\usetheme{default}
+
+\setbeamertemplate{frametitle}{
+    \color{black}
+    \vspace*{0.5cm}
+    \hspace*{0.25cm}
+    \textbf{\insertframetitle}
+    \par
+}
+
+% Hide the navigation icons at the bottom of the page
+\setbeamertemplate{navigation symbols}{}
+
+% No margins on any side
+\setbeamersize{text margin left=0cm,text margin right=0cm}
+
+
+\begin{document}
+
+% slide with bullet points
+\newcommand{\mslide}[2]{
+    \begin{frame}{#1}
+        \begin{center}
+        \begin{list}{$\bullet$}{\itemsep=1em}
+            #2
+        \end{list}
+        \end{center}
+    \end{frame}
+}
+
+\frame{
+\begin{center}
+\vspace{1.5cm}
+{\huge i3}\\
+{\large improved tiling window manager}\\
+\vspace{3cm}
+Michael Stapelberg\\
+\vspace{0.5cm}
+2012-01-25\\
+\end{center}
+}
+
+\begin{frame}{}
+\begin{center}
+\huge
+"Interesting, what is this?"
+
+\vspace*{1cm}
+
+vs.
+
+\vspace*{1cm}
+
+"What?! \textbf{Another} window manager?"
+\end{center}
+\end{frame}
+
+
+\begin{frame}{}
+    % talk about the difference between a desktop environment and a window manager:
+    % a desktop environment (like GNOME, KDE, Xfce) is a collection of
+    % programs, libraries (including a graphical toolkit) and configuration.
+    % it usually aims for a coherent look and feel and comes with a number of
+    % tools (g*, like gedit, geeqie, …)
+    % One of the programs of a DE is a window manager.
+    \begin{figure}
+    \includegraphics[width=0.97\textwidth]{Ubuntu_Linux_Jaunty_screenshot.png}
+    % source: http://en.wikipedia.org/wiki/File:Ubuntu_Linux_Jaunty_screenshot.png
+    \end{figure}
+\end{frame}
+
+
+\begin{frame}{}
+\begin{center}
+% compare this to a screenshot of i3:
+% notice the little amount of toolbars.
+% notice the lack of fancy window decorations
+% notice the absence of a desktop.
+% instead, you get to use the full screen.
+    \begin{figure}
+    \includegraphics[width=0.97\textwidth]{TdilE.jpg}
+    % source: jrd in #i3
+    \end{figure}
+\end{center}
+\end{frame}
+
+
+\mslide{i3: history and features}{
+    \item started from scratch in february 2009
+    \item successor* to wmii, which we couldn’t hack
+    \item clean, readable, documented code. and documentation
+    \item proper multi-monitor support, utf-8 clean
+    \item fast and lightweight, aimed at power users
+}
+
+% live demo here, just like at FrOSCon
+% include: the docs, with the keyboard layout
+% include: the configuration file
+
+\mslide{Inter-process communication}{
+    \item UNIX socket, JSON for serialization
+    \item i3-msg (C), AnyEvent::I3 (Perl), i3-ipc (Ruby), i3ipc (Python)
+    \item send any command, like \texttt{floating enable}
+    \item receive events (like focus change)
+    \item access the layout tree (!)
+}
+
+% demo: change a workspace
+% demo: testsuite
+
+\mslide{Example workflows}{
+    \item Urgency hint
+    \item Scratchpad
+    \item Web development (browser, editor, syslog)
+    \item Coding (C): two editors (code, test), quickly opening docs
+}
+
+\mslide{i3 in numbers}{
+    \item 3149 commits by 39 different people
+    \item > 600 tickets (about 60 open)
+    \item about 10.000 SLOC (mostly C, a bit of Perl)
+    \item testsuite: > 1000 test instructions in 96 files
+    \item conservative guess of > 1000 users
+}
+
+\mslide{Thanks for your attention}{
+    \item See \url{http://www.i3wm.org/} for everything
+    \item Ubuntu: upgrade to our repository: \url{http://i3wm.org/docs/repositories.html}
+    \item Debian: upgrade to the version in Debian testing
+    \item Any questions?
+    \item (pictures Creative Commons Attribution-Share Alike 3.0 Unported)
+}
+
+\end{document}