How to number slides in the beamer theme Hannover ?

Question

I used the package beamer outer theme split numbered to make it for themes with navigation. But the theme Hannover is different. Is re-defining the footline the only choice, or is there some other convenient way?

Update: the solutions like

\useoutertheme{infolines}

or

\setbeamertemplate{footline}{\insertframenumber/\inserttotalframenumber}

can both do the job, but not so grace as I expect. Both of them will ruin the layout of Hannover. It is better to put the page number on the bottom of the left column, or at the left side of the navigation row.

Answer 1

You can install an outer theme on top of a complete theme, as in:

\documentclass{beamer}
\title{Test of Hannover with slide numbers}
\usetheme{Hannover}
\useoutertheme{infolines}
\setbeamertemplate{headline}{} % removes the headline that infolines inserts

\begin{document}
\begin{frame}
\maketitle
\end{frame}

\begin{frame}
\begin{itemize}
\item Abel
\item Baker
\item Charlie
\end{itemize}
\end{frame}

\begin{frame}
\begin{itemize}
\item Abel
\item Baker
\item Charlie
\end{itemize}
\end{frame}

\end{document}

Answer 2

If you only want to have the slide numbers in the footer, I use this (I adapted Matthews code):

\documentclass{beamer}
\title{Test of Hannover with slide numbers}
\usetheme{Hannover}
\setbeamertemplate{footline}[frame number]

\begin{document}
\begin{frame}
\maketitle
\end{frame}

\begin{frame}
\begin{itemize}
\item Abel
\item Baker
\item Charlie
\end{itemize}
\end{frame}

\end{document}

For more details on how to modify beamer templates you can also have a look at the Beamer User Guide

Answer 3

I find a way finally. It is not a light solution, but it looks better.

My code is below. Maybe someone else also need it.

\documentclass{beamer}
\title[Hack Hannover]{Hannover with slide numbers}
\author[Beamer]{Beamer}
\usetheme{Hannover}
\def\swidth{1.6cm}
\setbeamersize{sidebar width left=\swidth}
\setbeamertemplate{sidebar left}
{
  {\usebeamerfont{title in sidebar}%
    \vskip1.5em%
    \usebeamercolor[fg]{title in sidebar}%
    \insertshorttitle[width=\swidth,center,respectlinebreaks]\par%
    \vskip1.25em%
  }%
  {%
    \usebeamercolor[fg]{author in sidebar}%
    \usebeamerfont{author in sidebar}%
    \insertshortauthor[width=\swidth,center,respectlinebreaks]\par%
    \vskip1.25em%
  }%
  \hbox to2cm{\hss\insertlogo\hss}
  \vskip1.25em%
  \insertverticalnavigation{\swidth}%
  \vfill
  \hbox to2cm{\hskip0.6cm\usebeamerfont{subsection in
      sidebar}\strut\usebeamercolor[fg]{subsection in
      sidebar}\inserttotalframenumber-\insertframenumber\hfill}%
  \vskip3pt%
}%

\begin{document}
\begin{frame}
\maketitle
\end{frame}

\section{Introduction}
\begin{frame}
\begin{itemize}
\item Abel
\item Baker
\item Charlie
\end{itemize}
\end{frame}

\section{Conclusions}
\begin{frame}
\begin{itemize}
\item Abel
\item Baker
\item Charlie
\end{itemize}
\end{frame}

\end{document}