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% dviout version 3.11 or later has "presentation" mode.
% If you want to present something by a computer without
% OHP sheet, lots of presenter used Microsoft PowerPoint.
% It is certainly useful, but week to use mathematical formulas.
% Now you can use dviout instead of PowerPoint.
% This macro package provides interface macros to create
% a dvi file which would be used in the presentation.
% Copyright(C) 2000 by Yoshiki OTOBE.
%
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{presen}[2000/02/25 v1.0]
\RequirePackage{ophook}
\newif\if@cover \@coverfalse
\newif\if@each \@eachfalse
\newcounter{@bkmode}\setcounter{@bkmode}{0}
\newcounter{@scmode}\setcounter{@scmode}{0}
\newcounter{@coverpos}\setcounter{@coverpos}{0}
\newif\if@autoprocess \@autoprocessfalse
\newcounter{@pausenum}\setcounter{@pausenum}{0}
\newcounter{@pausesec}\setcounter{@pausesec}{0}
\newcounter{@viewmode}\setcounter{@viewmode}{0}
\newif\if@keepmargin \@keepmarginfalse
\DeclareOption{cover}{\@covertrue}
\DeclareOption{uncover}{\@coverfalse}
\DeclareOption{whiteback}{\setcounter{@bkmode}{1}}
\DeclareOption{blackback}{\setcounter{@bkmode}{2}}
\DeclareOption{white}{\setcounter{@scmode}{1}}
\DeclareOption{black}{\setcounter{@scmode}{2}}
\DeclareOption{bottom}{\setcounter{@coverpos}{1}}
\DeclareOption{left}{\setcounter{@coverpos}{2}}
\DeclareOption{right}{\setcounter{@coverpos}{3}}
\DeclareOption{bottomleft}{\setcounter{@coverpos}{4}}
\DeclareOption{bottomright}{\setcounter{@coverpos}{5}}
\DeclareOption{each}{\@eachtrue} %% DONT USE THIS OPTION. FOR FUTURE.
\DeclareOption{auto}{\@autoprocesstrue}
\DeclareOption{noauto}{\@autoprocessfalse}
\DeclareOption{fit}{\setcounter{@viewmode}{1}}
\DeclareOption{full}{\setcounter{@viewmode}{2}}
\DeclareOption{keepmargin}{\@keepmargintrue}
\DeclareOption{adjustmargin}{\@keepmarginfalse}
\ExecuteOptions{uncover,black,bottom,adjustmargin}
\ProcessOptions\relax
\if@keepmargin\else
\message{Package presen : Paper size will be ignored.^^J%
use `keepmargin' option if you want to keep the layout.^^J}%
\topmargin-.5in
\headheight0pt
\headsep0pt
\advance\textwidth2\oddsidemargin
\advance\textwidth1in
\oddsidemargin-.5in
\evensidemargin\oddsidemargin
\textheight\linewidth
\paperheight\textheight
\advance\textheight-.5in
\fi
% If you fing "each" option is implimented, please forget it.
% "each" option requires more complicated implimentation.
\if@autoprocess
\special{dviout !A}
\fi
\if@each
\let\put@presentation\AtOutput
\else
\let\put@presentation\AtBeginDocument
\fi
\if@cover\UseCoverSheet\fi
\ifcase\c@@bkmode
\special{dviout N0}%
\or
\special{dviout N3}%
\or
\special{dviout N4}%
\fi
\ifcase\c@@scmode
\special{dviout N0}%
\or
\special{dviout N1}%
\or
\special{dviout N2}%
\fi
\ifcase\c@@coverpos
\or
\special{dviout N5}%
\or
\special{dviout N7}%
\or
\special{dviout N6}%
\or
\special{dviout N9}%
\or
\special{dviout N8}%
\fi
\ifnum\c@@coverpos>0
\if@cover\else
\special{dviout NP}%% ??
\@covertrue
\fi
\fi
\if@autoprocess
\ifcase\c@@viewmode
\special{dviout !p;!b}% go to presentation mode
\or
\special{dviout !p;!bdf}%
\or
\special{dviout !p;!bdl}%
\fi
\fi
% cover sheet will be used.
% If you enter "presentation mode" without \Pause,
% hitting [space] bar will...
% 1. show the page with covering.
% 2. show the page with all contents are shown.
% 3. go to next page...
\def\UseCoverSheet{%
\if@cover\else\special{dviout NO}\fi
\@covertrue
}
\def\UnuseCoverSheet{%
\if@cover\special{dviout NF}\fi
\@coverfalse
}
% cover sheet will be used.
% but the page will be shown as default if there's no \Pause.
\def\PrepareCoverSheet{%
\if@cover\else\special{dviout NP}\fi
\@covertrue
}
% we set cover sheet not to be used temporary.
\def\SuspendCoverSheet{%
\special{dviout !S}%
}
% If cover sheet is not currently used (e.g., after jumping another file
% or another page), come back to memoried page (e.g., the page the cover
% sheet was suspended) and change the mode to use cover sheet.
\def\ReturnToCoverSheet{%
\special{dviout !C}%
}
\def\SetTimer#1{\setcounter{@pausesec}{#1}}
\def\Pause{%
\ifnum\count0=1%
\@latex@warning{The first page may contain a pause special}%
\fi
\if@cover\UseCoverSheet\fi
\special{pause}%
\addtocounter{@pausenum}{1}%
}
\def\AutoProcess{%
\if@autoprocess\else\special{dviout !p}\fi
\@autoprocesstrue
}
\def\NoAutoProcess{\@autoprocessfalse}
\g@addto@macro\@outputpageh@@kE{\@embedpause}
\AtEndDocument{%
\g@addto@macro\@outputpageh@@kE{\@embedreturntop}%
}
\def\@embedtimer{%
\ifnum\c@@pausesec>0%
\special{dviout `timer \the\c@@pausesec\space je}%
\fi
}
\def\GoTop{%
\special{dviout `timer 0}%
\special{dviout jt}%
}
\def\GoNext{%
\special{dviout `timer 0}%
\special{dviout je}%
}
\def\Wait#1{%
\special{dviout `timer #1}%
}
\def\StartPresentation{%
\ifcase\c@@viewmode
\special{dviout !p}% go to presentation mode
\or
\special{dviout !p;df}%
\or
\special{dviout !p;dl}%
\fi
}
\def\FinishPresentation{%
\special{dviout !n}%
}
\let\@embedpause\relax
\h@@koutput
\def\define@embed@macro{
\gdef\@embedreturntop{%
\if@autoprocess
\special{dviout `timer 0}%
\special{dviout jt}%
\fi
}%
\gdef\@embedpause{%
\ifnum\c@@pausenum=0%
\if@autoprocess
\special{pause}%
\special{dviout `timer 0 je}%
\fi
\fi
\loop\ifnum\c@@pausenum>0%
\@embedtimer
\global\advance\c@@pausenum by -1%
\repeat
\if@autoprocess
\special{dviout `timer \the\c@@pausesec\space je}%
\fi
}%
}
\define@embed@macro
\endinput
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