# Beamer navigation symbols inside footline

I am trying to get the navigation symbols placed inside a second footline that I added.

I created a second footline above the standard one, inspired by the infolines theme code. Inside this extra footline, I want to see the navigation symbols.

\addtobeamertemplate{footline}{
\leavevmode%
\hbox{%
\end{beamercolorbox}%
}%
\vskip0.5pt%
}


When I do this, the navigation symbols are added above this extra footline. But I want them to be added on top of this extra line.

I tried doing this using a \vspace, but they ended up behind the footline:

% uncommented, because it doesn't work:


Rendering:

\documentclass{beamer}
\mode<presentation>

\title[Beamer Sample]{Sample presentation using Beamer}
\institute[UoF]{University of Foo}
\author{derabbink}
\date{\today}

\usecolortheme{dolphin}
\useoutertheme{infolines}

\leavevmode%
\hbox{%
\end{beamercolorbox}%
}%
\vskip0.5pt%
}

\begin{document}

\frame{\titlepage}

\begin{frame}\frametitle{FooBar}
\begin{itemize}
\item Foo
\item Bar
\end{itemize}
\end{frame}

\end{document}


PS: I also noticed that when I add a background image, it will be visible in the 0.5pt space between both footlines. What would be the best way to make that space a white line?

First, you need to set the navigations symbol template to be empty:

\setbeamertemplate{navigation symbols}{}


And then you can insert the symbols in the additional footline using the appropriate inserts:

\insertslidenavigationsymbol%


A complete example (I defined a new color for the additional color box, so the symbols are visible):

\documentclass{beamer}
\mode<presentation>

\title[Beamer Sample]{Sample presentation using Beamer}
\institute[UoF]{University of Foo}
\author{derabbink}
\date{\today}

\usecolortheme{dolphin}
\useoutertheme{infolines}

\setbeamercolor{mycolor}{fg=white,bg=structure!30}
\leavevmode%
\hbox{%
\begin{beamercolorbox}[wd=\paperwidth,ht=2.75ex,dp=.5ex,right,rightskip=1em]{mycolor}%
\end{beamercolorbox}%
}%
\vskip0.5pt%
}{}

\begin{document}

\frame{\titlepage}

\begin{frame}\frametitle{FooBar}
\begin{itemize}
\item Foo
\item Bar
\end{itemize}
\end{frame}

\end{document}


For the second part of the question, instead of a vertical skip you can use another color box of the desired height; something like

\addtobeamertemplate{footline}{
\leavevmode%
\hbox{%
\begin{beamercolorbox}[wd=\paperwidth,ht=2.75ex,dp=.5ex,right,rightskip=2em]{mycolor}%