[Tex/LaTex] Setting icon in Beamer button

Question

Let's say I have the following MWE (from here):

\documentclass{beamer}

\begin{document}
    \begin{frame}
    \hyperlink{contents}{\beamerbutton{contents page}}

    \hyperlink{columns}{\beamergotobutton{columns page}}

    \hyperlink{pictures}{\beamerskipbutton{pictures page}}

    \hyperlink{pictures}{\beamerreturnbutton{Home page}}
\end{frame}
\end{document}

It gives this:

Now, I want to change the left triangle icon (just before Home page) by another symbol (say, by \faHome from fontawesome package). How can I do that?

Answer 1

The default definition of these symbols can be found in beamerbasenavigation.sty. So for example if you want to modify the symbol for your home page, which uses the returnbutton:

\documentclass{beamer}

\usepackage{fontawesome}

\def\insertreturnsymbol{%
  \faCoffee\space
}

\begin{document}
    \begin{frame}
    \hyperlink{contents}{\beamerbutton{contents page}}

    \hyperlink{columns}{\beamergotobutton{columns page}}

    \hyperlink{pictures}{\beamerskipbutton{pictures page}}

    \hyperlink{pictures}{\beamerreturnbutton{Home page}}
\end{frame}
\end{document}

(the other symbols can be altered in the same way)