Redefine the \footcite command with biblatex to print only first author's surname and title

In order to limit the space occupied by citations in a beamer presentation, I would like to limit the list of authors to print only the first surname when used in the footnotes field, but I struggle in finding a way to do that.

Starting from Uniform citation numbers in Beamer with Biblatex, how to modify the hypercite bibmacro in the MWE to print only selected fields, i.e. first author's surname and title?

MWE:

\documentclass[10pt]{beamer}
\usepackage[utf8]{inputenc}

\usepackage{filecontents}
\begin{filecontents}{MWE.bib}
@article{Knuth92,
author = "D.E. Knuth",
title = "Two notes on notation",
journal = "Amer. Math. Monthly",
volume = "99",
year = "1992",
pages = "403--422",
}

@book{ConcreteMath,
author = "R.L. Graham and D.E. Knuth and O. Patashnik",
title = "Concrete mathematics",
year = "1989"
}

@unpublished{Simpson,
author = "H. Simpson",
title = "Proof of the {R}iemann {H}ypothesis",
note = "preprint (2003), available at
\texttt{http://www.math.drofnats.edu/riemann.ps}",
year = "2003"
}
\end{filecontents}

\usetheme[progressbar=frametitle,numbering=fraction]{metropolis}
\setbeamertemplate{bibliography item}{\insertbiblabel} %% Remove book symbol from references and add number
\usepackage[style=ieee,backend=bibtex,citetracker=true]{biblatex}

% See https://tex.stackexchange.com/a/396754/28146
\makeatletter
\newbibmacro*{hypercite}{%
\renewcommand{\@makefntext}[1]{\noindent\normalfont##1}%
\footnotetext{%
\blxmkbibnote{foot}{%
\printtext[labelnumberwidth]{%
\printfield{prefixnumber}%
\printfield{labelnumber}}%
\fullcite{\thefield{entrykey}}}}}

\DeclareCiteCommand{\hypercite}%
{\usebibmacro{cite:init}}
{\usebibmacro{hypercite}}
{}
{\usebibmacro{cite:dump}}

% Redefine the \footcite command to use the reference number
\renewcommand{\footcite}[1]{\cite{#1}\hypercite{#1}}
\makeatother

\begin{document}

\begin{frame}{Some references}
Some references non cited in the footnotes, \cite{Knuth92,Simpson,ConcreteMath} and some cited also in the footnotes\footnote{A footnote}, \footcite{Knuth92} and \footcite{ConcreteMath}\footnote{A second footnote}
\end{frame}

\begin{frame}[t,allowframebreaks]{References} %% Aligned top
\end{frame}

\end{document}


To print only the first author's surname in the footnote, you could use the quick and dirty way and use \printnames[][1-1]{author}.

MWE:

\documentclass[10pt]{beamer}
\usepackage[utf8]{inputenc}

\usepackage{filecontents}
\begin{filecontents}{MWE.bib}
@article{Knuth92,
author = "D.E. Knuth",
title = "Two notes on notation",
journal = "Amer. Math. Monthly",
volume = "99",
year = "1992",
pages = "403--422",
}

@book{ConcreteMath,
author = "R.L. Graham and D.E. Knuth and O. Patashnik",
title = "Concrete mathematics",
year = "1989"
}

@unpublished{Simpson,
author = "H. Simpson",
title = "Proof of the {R}iemann {H}ypothesis",
note = "preprint (2003), available at
\texttt{http://www.math.drofnats.edu/riemann.ps}",
year = "2003"
}
\end{filecontents}

\usetheme[progressbar=frametitle,numbering=fraction]{metropolis}
\setbeamertemplate{bibliography item}{\insertbiblabel} %% Remove book symbol from references and add number
\usepackage[style=ieee,backend=bibtex,citetracker=true]{biblatex}

% See https://tex.stackexchange.com/a/396754/28146
\makeatletter
\newbibmacro*{hypercite}{%
\renewcommand{\@makefntext}[1]{\noindent\normalfont##1}%
\footnotetext{%
\blxmkbibnote{foot}{%
\printtext[labelnumberwidth]{%
\printfield{prefixnumber}%
\printfield{labelnumber}}%
\printnames[][1-1]{author}
\printfield{title}}}}

\DeclareCiteCommand{\hypercite}%
{\usebibmacro{cite:init}}
{\usebibmacro{hypercite}}
{}
{\usebibmacro{cite:dump}}

% Redefine the \footcite command to use the reference number
\renewcommand{\footcite}[1]{\cite{#1}\hypercite{#1}}
\makeatother

\begin{document}

\begin{frame}{Some references}
Some references non cited in the footnotes, \cite{Knuth92,Simpson,ConcreteMath} and some cited also in the footnotes\footnote{A footnote}, \footcite{Knuth92} and \footcite{ConcreteMath}\footnote{A second footnote}
\end{frame}

\begin{frame}[t,allowframebreaks]{References} %% Aligned top

• For example, why \setunit{\addcomma\addspace}? Oct 20, 2017 at 22:04
• @Alex \setunit{\addcomma\addspace} is something I learned from reading the source of existing biblatex styles rather then look it up in the manual. Another good learning resource is to read as many answers by tex.stackexchange.com/users/35864/moewe as possible. Oct 20, 2017 at 22:08