% Copyright 2003--2007 by Till Tantau
% Copyright 2010 by Vedran Mileti\'c
% Copyright 2015 by Vedran Mileti\'c, Joseph Wright
%
% This file may be distributed and/or modified
%
% 1. under the LaTeX Project Public License and/or
% 2. under the GNU Public License.
%
% See the file LICENSE.md for more details.

\let\leftheader=\@gobble
\let\rightheader=\@gobble
\let\leftfooter=\@gobble
\let\rightfooter=\@gobble
\let\Restriction=\@gobble
\let\marginpar=\@gobble

\newcommand\LogoOff{\expandafter\global\logo{}}
\newcommand\LogoOn{\expandafter\global\logo{\beamerfoils@logo}}
\def\MyLogo#1{\gdef\beamerfoils@logo{#1}\LogoOn}
\def\beamerfoils@logo{}

\newtheorem*{Theorem*}{Theorem}
\newtheorem*{Lemma*}{Lemma}
\newtheorem*{Corollary*}{Corollary}
\newtheorem*{Proposition*}{Proposition}
\newtheorem*{Definition*}{Definition}

\def\beamerfoils@closer{}%
\newcommand\foilhead[2][]{%
  \beamerfoils@closer%
  \ifbeamer@inframe
    \gdef\beamerfoils@closer{}%
    \let\beamerfoils@next=\relax%
  \else
    \gdef\beamerfoils@closer{\egroup}%
    \let\beamerfoils@next=\beamerfoils@openframe%
  \fi
  \beamerfoils@next%
  \frametitle{#2}%
  }
\let\rotatefoilhead=\foilhead

\def\beamerfoils@openframe{\beamerfoils@origframe[allowframebreaks]\bgroup}%

\let\beamerfoils@origframe=\frame
\def\frame{\endfoil\beamerfoils@origframe}

\def\endfoil{\beamerfoils@closer\gdef\beamerfoils@closer{}}

\beamertemplatecontinuationtext

\newenvironment{boldequation}{\boldmath\begin{equation}}{\end{equation}}
\newenvironment{boldequation*}{\boldmath\begin{equation*}}{\end{equation*}}

\DeclareRobustCommand\FoilTeX{{\normalfont{\sffamily Foil}\kern-.03em{\rmfamily\TeX}}}
\def\bm#1{\mathpalette\bmstyle{#1}}
\def\bmstyle#1#2{\mbox{\boldmath$#1#2$}}