mdframed theorems within beamerarticle script

Question

I need to use framed theorem environments the way they are made in Make an Example and shaded box like in the book.
The realization with \usepackage[framemethod=TikZ]{mdframed} is working fine. But now, I have to implement this in a ready written script being made with \documentclass{article} and \usepackage{beamerarticle}.
The predefined theorem environments in german language Satz, Beispiel and so on are used. I already tried using \setbeamertemplate{theorem begin}{...} and \setbeamertemplate{theorem end}{...} for inserting those boxing commands for example with

\setbeamertemplate{theorem begin}{\begin{mdframed}%
[linecolor=yellow,outerlinewidth=3pt,backgroundcolor=red!10,roundcorner=15pt,%
skipabove=\baselineskip,skipbelow=\baselineskip]}%
\setbeamertemplate{theorem end}{\end{mdframed}}

but it is not working.
Are there other ways, as I do not want to rename all used environment and make new ones?

I found a solution

\usepackage{etoolbox}
\BeforeBeginEnvironment{Satz}{\begin{mdframed}[linecolor=yellow,outerlinewidth=3pt,backgroundcolor=red!10,roundcorner=15pt,%
skipabove=\baselineskip,skipbelow=\baselineskip]\vspace{-0.5cm}}
\AfterEndEnvironment{Satz}{\end{mdframed}}

but others are still welcome.

Answer 1

The solution with \setbeamertemplate{begin theorem} doesn't work because it isn't defined. The file beamerbasetheorems.sty loaded by beamerarticle provides the definition of the theorem environments.

\mode
<article>
{
  \ifbeamer@ams
    \RequirePackage{amsmath}
    \RequirePackage{amsthm}

    \renewenvironment<>{proof}[1][\proofname]
    {\begin{actionenv}#2\begin{originalproof}[{#1}]}{\end{originalproof}\end{actionenv}}

    % Make new theorem overlay-specification-aware
    \let\beamer@origthm=\@thm
    \def\@thm#1#2#3{\def\beamer@store{{#1}{#2}{#3}}\beamer@readspec}
    \def\beamer@storeaction{\begin{actionenv}}
    \newcommand<>\beamer@readspec[1][]{\def\beamer@storeaction{\begin{actionenv}#2}%
      \expandafter\beamer@origthm\beamer@store[{#1}]}

    \let\beamer@origbegintheorem=\@begintheorem
    \def\@begintheorem{\beamer@storeaction\beamer@origbegintheorem}

    \let\beamer@origendtheorem=\@endtheorem
    \def\@endtheorem{\beamer@origendtheorem\end{actionenv}}
  \fi

  \def\th@example{\th@remark}

  \newcommand{\ExampleInline}[1]{\translate{Example}: \ignorespaces#1}

  % Compatiblity:
  \newcommand{\BeispielInline}[1]{Beispiel: \ignorespaces#1}
}

You see there are no definition. The environments lemma etc. are also defined in the quoted file.

Based on this information I prefer the solution with etoolbox (loaded by mdframed). To modify every theorem environment you can also use \BeforeBeginEnvironment{\@begintheorem}{...}.

To verify my answer you can test the simple example:

\documentclass[ngerman]{book}
\usepackage{babel}
\usepackage{beamerarticle}
\setbeamertemplate{theorem begin}{\undefined \fooo}
\begin{document}
Text
\begin{theorem}
foo bar
\end{theorem}
Text
\begin{lemma}
foo bar
\end{lemma}
\end{document}

The setting \setbeamertemplate{theorem begin}{\undefined \fooo} has no influence.