[Tex/LaTex] How to change indentation/margins of quote environment in Beamer

beamerindentationquoting

I need to put a quote between itemize items in a beamer frame. If I stop and restart itemize around the quote the result's not indented at all:

\documentclass{beamer}

\usetheme{CambridgeUS}
\usefonttheme{serif}
\setbeamerfont{quote}{shape=\upshape,family=\rmfamily}

\beamerdefaultoverlayspecification{<+->}

\begin{document}

\begin{frame}{Frame}

\begin{itemize}

\item Lorem ipsum dolor sit amet, consectetur adipiscing elit. 

\end{itemize}

\begin{quote}Sed vitae purus facilisis, blandit odio eget, tincidunt nisi. Aliquam pulvinar, ipsum ac aliquet facilisis, neque quam tincidunt lacus, at eleifend ante lorem quis neque. Suspendisse potenti. \end{quote}

\begin{itemize}

\item Nulla vel bibendum ligula. Sed imperdiet felis lacus, a vulputate urna egestas at.

\end{itemize}

\end{frame}

\end{document}

But if I don't restart the quote is indented too much:

\documentclass{beamer}

\usetheme{CambridgeUS} \usefonttheme{serif} \setbeamerfont{quote}{shape=\upshape,family=\rmfamily}

\beamerdefaultoverlayspecification{<+->}

\begin{document}

\begin{frame}{Frame}

\begin{itemize}

\item Lorem ipsum dolor sit amet, consectetur adipiscing elit. \smallskip{}

\begin{quote}Sed vitae purus facilisis, blandit odio eget, tincidunt nisi. Aliquam pulvinar, ipsum ac aliquet facilisis, neque quam tincidunt lacus, at eleifend ante lorem quis neque. Suspendisse potenti. \end{quote}

\item Nulla vel bibendum ligula. Sed imperdiet felis lacus, a vulputate urna egestas at.

\end{itemize}

\end{frame}

\end{document}

I'm guessing that I will have to redefine the quote environment from beamerbaselocalstructure.sty. How would that go? It's probably in the beamer user guide, but I couldn't find it.

Best Answer

Use changepage's adjustwidth environment to adjust the margins around your quote:

enter image description here

\documentclass{beamer}

\let\Tiny\tiny% http://tex.stackexchange.com/a/94159/5764

\usepackage{changepage}

\usetheme{CambridgeUS}
\usefonttheme{serif}
\setbeamerfont{quote}{shape=\upshape,family=\rmfamily}

\beamerdefaultoverlayspecification{<+->}

\begin{document}

\begin{frame}{Frame}

\begin{itemize}

\item Lorem ipsum dolor sit amet, consectetur adipiscing elit. \smallskip{}

\begin{quote}
Sed vitae purus facilisis, blandit odio eget, tincidunt nisi. Aliquam pulvinar, ipsum ac aliquet facilisis, neque quam tincidunt lacus, at eleifend ante lorem quis neque. Suspendisse potenti.
\end{quote}

\begin{adjustwidth}{1em}{1em}
Sed vitae purus facilisis, blandit odio eget, tincidunt nisi. Aliquam pulvinar, ipsum ac aliquet facilisis, neque quam tincidunt lacus, at eleifend ante lorem quis neque. Suspendisse potenti.
\end{adjustwidth}

\item Nulla vel bibendum ligula. Sed imperdiet felis lacus, a vulputate urna egestas at.

\end{itemize}

\end{frame}

\end{document}

You can perform a complete replacement of the quote environment with that of an adjustwidth one using (say)

\renewenvironment{quote}[1][1em]
  {\begin{adjustwidth}{#1}{#1}}
  {\end{adjustwidth}}

The above redefinition provides

\begin{quote}[<margin>]
  <quote>
\end{quote}

with an optional <margin> argument that are used for the left and right margin adjustments.

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