beamer-pause.tex

first \pause second


\newrobustcmd{\beamer@@pause}[1][]{%
  \ifblank{#1}%
    {\stepcounter{beamerpauses}}%
    {\setcounter{beamerpauses}{#1}}%
  \onslide<\value{beamerpauses}->\relax%
}

% expand \pause, #1 = ""
% expand \ifblank, true
\stepcounter{beamerpauses}
\onslide<\value{beamerpauses}->\relax


\newrobustcmd*\onslide{%
  \@ifstar
    {\only}
    {\@ifnextchar+%
      {\expandafter\beamer@visibleonslide\@gobble}
      {\beamer@mainonslide}}}

% expand \onslide
% expand \@ifstar, false
% expand \@ifnextchar, false
\beamer@mainonslide<\value{beamerpauses}->\relax


\newcommand<>{\beamer@mainonslide}{%
  \@ifnextchar\bgroup%
  {\uncover#1}%
  {\beamer@noargsonslide#1}%
}

% expand \beamer@mainonslide, #1 = "<\value{beamerpauses}>"
% expand \@ifnextchar, false
\beamer@noargsonslide<\value{beamerpauses}->\relax


\newcommand<>{\beamer@noargsonslide}{%
  \beamer@endpause%
  \alt#1%
  {\beamer@spacingcover\gdef\beamer@endpause{\beamer@spacingcover}}%
  {\beamer@startcovered\gdef\beamer@endpause{\beamer@endcovered}}%
}

% expand \beamer@noargsonslide, #1 = "<\value{beamerpauses}>"
% expand \beamer@endpause, empty
\alt<\value{beamerpauses}->
  {\beamer@spacingcover\gdef\beamer@endpause{\beamer@spacingcover}}%
  {\beamer@startcovered\gdef\beamer@endpause{\beamer@endcovered}}%
  \relax


\newrobustcmd*\alt{\@ifnextchar<{\beamer@alt}{\beamer@alttwo}}

% expand \alt
% expand \@ifnextchar, true
\beamer@alt<\value{beamerpauses}->
  {\beamer@spacingcover\gdef\beamer@endpause{\beamer@spacingcover}}%
  {\beamer@startcovered\gdef\beamer@endpause{\beamer@endcovered}}%
  \relax


\long\def\beamer@alt<#1>#2#3{%
  \gdef\beamer@doifnotinframe{#3}\def\beamer@doifinframe{#2}%
  \beamer@masterdecode{#1}\beamer@donow}

% expand \beamer@alt, #1 = "\value{beamerpauses}", 
%   #2 = "\beamer@spacingcover ...", #3 = "\beamer@startcovered ..."
\gdef\beamer@doifnotinframe
  {\beamer@startcovered\gdef\beamer@endpause{\beamer@endcovered}}%
\def\beamer@doifinframe
  {\beamer@spacingcover\gdef\beamer@endpause{\beamer@spacingcover}}%
\beamer@masterdecode{\value{beamerpauses}-}\beamer@donow


\begingroup
  \catcode`\|=\active
  \catcode`\:=\active
  \catcode`\,=\active
  \catcode`\.=\active
  \catcode`\+=\active
  \catcode`\-=\active
  \catcode`\(=\active
  \catcode`\)=\active
  \catcode`\ =\active
\xdef\beamer@masterdecode#1{%
\noexpand\beamer@localanotherslidefalse%
\setbox\beamer@decode@box=\hbox{%
\unexpanded{%
\ifnum\catcode`\|=\active\edef|{\string|}\fi%
\ifnum\catcode`\:=\active\edef:{\string:}\fi%
\ifnum\catcode`\,=\active\edef,{\string,}\fi%
\ifnum\catcode`\.=\active\edef.{\string.}\fi%
\ifnum\catcode`\+=\active\edef+{\string+}\fi%
\ifnum\catcode`\-=\active\edef-{\string-}\fi%
\ifnum\catcode`\(=\active\edef({\string(}\fi%
\ifnum\catcode`\)=\active\edef){\string)}\fi%
\ifnum\catcode`\ =\active\edef {\string }\fi}%
\edef\noexpand\beamer@@@temp{#1\string|stop\string:0\string|}%
\edef\noexpand\beamer@@@temp{\unexpanded{\expandafter\zap@space\beamer@@@temp}%
\space\noexpand\@empty}%
\unexpanded{\expandafter\beamer@decode\beamer@@@temp%
\ifbeamer@localanotherslide\aftergroup\beamer@localanotherslidetrue\fi}%
}%
}%
\endgroup

% expand \beamer@masterdecode
\beamer@@@temp -> "\c@beamerpauses-|stop:0|"
\beamer@decode\c@beamerpauses-|stop:0|%
\ifbeamer@localanotherslide\aftergroup\beamer@localanotherslidetrue\fi
\beamer@donow


\def\beamer@decode{%
  \beamer@plusencounteredfalse
  \global\beamer@minimum=10000\relax
  \gdef\beamer@decaction{}%
  \global\let\beamer@decodefound=\beamer@allsign
  \beamer@@decodefind}

% expand \beamer@decode
% expand \beamer@masterdecode
\beamer@minimum -> "10000"
\beamer@decaction -> ""
\beamer@decodefound -> "*"
\beamer@@decodefind\c@beamerpauses-|stop:0|%
\ifbeamer@localanotherslide\aftergroup\beamer@localanotherslidetrue\fi
\beamer@donow


\def\beamer@@decodefind#1|{\beamer@@@decodefind#1:|}

% expand \beamer@@decodefind, #1 = "\c@beamerpauses-"
\beamer@@@decodefind\c@beamerpauses-:|stop:0|%
\ifbeamer@localanotherslide\aftergroup\beamer@localanotherslidetrue\fi
\beamer@donow


\def\beamer@@@decodefind#1:#2|{%
  \ifblank{#2}%
    {\beamer@decodefind beamer:#1:}%
    {\beamer@decodefind #1:#2}}

% expand \beamer@@@decodefind, #1 = "\c@beamerpauses-", #2 = ""
% expand \ifblank, true
\beamer@decodefind beamer:\c@beamerpauses-:stop:0|%
\ifbeamer@localanotherslide\aftergroup\beamer@localanotherslidetrue\fi
\beamer@donow



\def\beamer@decodefind#1:#2:{...}

% expand \beamer@decodefind, #1 = "beamer", #2 = "\c@beamerpauses-"
<replacement text of \beamer@decodefind>stop:0|%
\ifbeamer@localanotherslide\aftergroup\beamer@localanotherslidetrue\fi
\beamer@donow


\beamer@@decode\c@beamerpauses-,!


\def\beamer@@decode{%
  \kernel@ifnextchar!%
  {\beamer@decodeend}%
  {%
    \kernel@ifnextchar*%
    {\beamer@decodeall}{%
      \kernel@ifnextchar-%
      {\beamer@decodeuntil}%
      {\beamer@decodenumber}}}}

% expand \beamer@@decode
\beamer@decodenumber\c@beamerpauses-,!


\def\beamer@decodenumber#1{%
  \kernel@ifnextchar,%
  {\beamer@decodeone{#1}}%
  {\kernel@ifnextchar-%
    {\beamer@decodenumberto{#1}}%
    {\beamer@decodegobble{#1}}}}

% expand \beamer@decodenumber, #1 = "\c@beamerpauses"
\beamer@decodenumberto{\c@beamerpauses}-,!

\def\beamer@decodenumberto#1-{%
  \kernel@ifnextchar,%
  {\beamer@decodeto{#1}}%
  {\beamer@decodebetween{#1}}}

% expand \beamer@decodenumbertp, #1 = "\c@beamerpauses"
\beamer@decodeto{\c@beamerpauses},!


\def\beamer@decodeto#1,{%
  \ifnum#1<\beamer@minimum
    \global\beamer@minimum=#1\relax
  \fi
  \ifnum#1>\beamer@slideinframe
    \global\beamer@anotherslidetrue\beamer@localanotherslidetrue
  \fi
  \ifnum#1>\beamer@slideinframe
  \else
    \gdef\beamer@doifnotinframe{\beamer@doifinframe}%
  \fi
  \beamer@@decode}

% expand \beamer@decodeto, #1 = "\c@beamerpauses"
\beamer@minimum -> 2


% in beamerbasedecode.sty
\def\beamer@donow{\beamer@doifnotinframe}
% in \beamer@alt
\gdef\beamer@doifnotinframe
  {\beamer@startcovered\gdef\beamer@endpause{\beamer@endcovered}}%

% expand \beamer@donow
% expand \beamer@doifnotinframe
\beamer@startcovered
\gdef\beamer@endpause{\beamer@endcovered}


\pgfsys@begininvisible