[Tex/LaTex] How to adjust the width of Beamer’s footnote “area”


I have a Beamer template with a vertical "ToC bar" along the right side. I have the problem that when I insert footnote citations (e.g. biblatex' \footfullcite), the resulting footnote protrudes into the ToC bar on the right.
This leads me to suspect that footnotes are typeset in a different "area" of a frame than the main content (since the main frame content does not "invade" the navigation bar).
How do I adjust the width of this footnote area so that long footnotes do not protrude into the ToC bar on the right?

Best Answer

OK, I seem to have found a solution that works, but I still think it might be a dirty hack... Inspired by lockstep's question cited in the comments, I gambled that this could be done using \addtobeamertemplate{footnote}.

I poked around Beamer's basic definitions and found \newcommand<>\beamer@framefootnotetext[1]{... in beamerbaseframecomponents.sty where I found \hsize0.85\paperwidth which seems to define the footnote "area" width.

So, I came up with the following solution:


where I have tweaked \beamerfoottmplength to the desired width.

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