[Tex/LaTex] Horizontal placement of footnotes in beamer

beamerfootnotes

Hi I am wondering whether it is possible to place the beamer footnotes into multiple columns or display as horizontal, instead of vertical. 

\documentclass{beamer}
\usepackage{booktabs}
\begin{document}

\begin{frame}
\begin{table}[htbp]
  \centering
%  \caption{Add caption}
            \resizebox{\textwidth}{!}{%
    \begin{tabular}{rrr}
    \toprule
    \centering
    Animal estimated by tracking  & \textbf{2 Equation approach} & 1 Equation \\
    50\%   & $\frac{\partial C\footnote{dye }(t,\vec{x})}{}$      &  \\
     &  $\frac{\partial \alpha\footnote{age }(t,\vec{x})}{}$     & $\frac{\partial A\footnote{A refers to "animal"}}{}$ \\
    \bottomrule
    \end{tabular}}%
%  \label{tab:addlabel}%
\end{table}%
\end{frame}
\end{document}

I would appreciate if anyone could explain me how to get the horizontal footnotes.

Best Answer

Standard LaTeX packages like footmisc, bigfoot or manyfoot won't be usable here with beamer (they're either incompatible or produce undesired effects).

Here's one possibility to have multicolumn (well, two-column in this case) footnotes; some re-definitions of internal commands were required (the new code is marked %NEW):

\documentclass{beamer}
\usepackage{multicol}

\makeatletter
% All the following is NEW
\renewcommand{\@makefntext}[1]%
{\parindent 0em\everypar={\hangafter 1\hangindent  0em}\raggedright
\noindent\@makefnmark\hskip 1em\ignorespaces#1}
%%%%%%%%%%%%%%%%%%%%
\renewcommand<>\beamer@framefootnotetext[1]{%
  \global\setbox\beamer@footins\vbox{%
    \hsize0.5\framewidth%NEW
    \textwidth\hsize
    \columnwidth\hsize
    \unvbox\beamer@footins
    \reset@font\footnotesize
    \@parboxrestore
    \protected@edef\@currentlabel
         {\csname p@footnote\endcsname\@thefnmark}%
    \color@begingroup
      \uncover#2{\@makefntext{%
        \rule\z@\footnotesep\ignorespaces#1\@finalstrut\strutbox}}%
    \color@endgroup}}
\def\beamer@autobreakframebox{%
  \global\setbox\beamer@splitbox=\box\voidb@x%
  \ifbeamer@autobreak%
    % Ok, frame was overful -> split it!
    \setbox\@tempboxa=\vsplit\beamer@framebox to\beamer@autobreakfactor\textheight%
    \global\setbox\beamer@splitbox=\box\beamer@framebox%
    \@tempdima=\ht\beamer@splitbox%
    \ifdim\@tempdima<\beamer@autobreaklastheight%
      \global\beamer@autobreaklastheight=\@tempdima\relax%
    \else%
      \setbox\@tempboxa=\vbox{\unvbox\@tempboxa\unvbox\beamer@splitbox}%
      \global\setbox\beamer@splitbox=\box\voidb@x%
    \fi%
    \setbox\beamer@framebox=\vbox to\textheight{\unvbox\@tempboxa%
      \vskip\beamer@framebottomskipautobreak%
      \ifvoid\beamer@splitbox%
        \ifvoid\beamer@footins%
        \else%
          \begingroup
            \usebeamercolor*[fg]{footnote}%
            \footnoterule %
\setlength{\multicolsep}{0pt}%NEW
\begin{multicols}{2}%NEW
            \unvbox \beamer@footins%
\end{multicols}%NEW
            \global\setbox\beamer@footins=\box\voidb@x%
          \endgroup  
        \fi%
      \fi%
      \beamer@exitcode%
    }%
  \else%
    \setbox\beamer@framebox=\vbox to\textheight{\unvbox\beamer@framebox%
      \vskip\beamer@framebottomskip%
      \ifvoid\beamer@footins%
      \else%
        \begingroup
          \usebeamercolor*[fg]{footnote}%
          \footnoterule %
\setlength{\multicolsep}{0pt}%NEW
\begin{multicols}{2}%NEW
          \unvbox \beamer@footins %
\end{multicols}%NEW
          \global\setbox\beamer@footins=\box\voidb@x%
        \endgroup 
      \fi%
      \beamer@exitcode}%
    \global\setbox\beamer@footins=\box\voidb@x%
  \fi%
  }
\makeatother
\setbeamertemplate{navigation symbols}{}

\begin{document}

\begin{frame}
\frametitle{Multicolumn footnotes}
Some\footnote{A first footnote with some additional text just for the example; and now I add some more text and perhaps some additional text to see if it works as intended} test text\footnote{A second footnote}
\end{frame}

\end{document}

enter image description here

As a personal opinion, I don't like much standard footnotes, and I like less multicolumn footnotes.

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