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%%
%% Ian's presentation class
%%
%% TeX format
\NeedsTeXFormat{LaTeX2e}[1995/12/01]
%% class name
\ProvidesClass{ian-presentation}[2017/09/29]
\def\ian@defaultoptions{
\pagestyle{plain}
\RequirePackage{color}
\RequirePackage{amssymb}
}
%% paper dimensions
\setlength\paperheight{240pt}
\setlength\paperwidth{427pt}
%% fonts
\input{size11.clo}
\DeclareOldFontCommand{\rm}{\normalfont\rmfamily}{\mathrm}
\DeclareOldFontCommand{\sf}{\normalfont\sffamily}{\mathsf}
\DeclareOldFontCommand{\tt}{\normalfont\ttfamily}{\mathtt}
\DeclareOldFontCommand{\bf}{\normalfont\bfseries}{\mathbf}
\DeclareOldFontCommand{\it}{\normalfont\itshape}{\mathit}
%% text dimensions
\textheight=208pt
\textwidth=370pt
\hoffset=-1in
\voffset=-1in
\oddsidemargin=24pt
\evensidemargin=24pt
\topmargin=8pt
\headheight=0pt
\headsep=0pt
\marginparsep=0pt
\marginparwidth=0pt
\footskip=16pt
%% remove default skips
\parindent=0pt
\parskip=0pt
\baselineskip=0pt
%% something is wrong with \thepage, redefine it
\gdef\thepage{\the\c@page}
%% correct vertical alignment at the end of a document
\AtEndDocument{
% save total slide count
\immediate\write\@auxout{\noexpand\gdef\noexpand\slidecount{\thepage}}
\vfill
\eject
}
%% footer
\def\ps@plain{
\def\@oddhead{}
\def\@evenhead{\@oddhead}
\def\@oddfoot{\tiny\hfill\thepage/\safe\slidecount\hfill}
\def\@evenfoot{\@oddfoot}
}
\def\ps@empty{
\def\@oddhead{}
\def\@evenhead{\@oddhead}
\def\@oddfoot{}
\def\@evenfoot{\@oddfoot}
}
%% title of slide
\def\title#1{
\hfil{\bf\large #1}\par
\hfil\vrule width0.75\textwidth height0.3pt\par
\vskip5pt
}
%% hyperlinks
% hyperlinkcounter
\newcounter{lncount}
% hyperref anchor
\def\hrefanchor{%
\stepcounter{lncount}%
\hypertarget{ln.\thelncount}{}%
}
%% define a command and write it to aux file
\def\outdef#1#2{%
% define command%
\expandafter\xdef\csname #1\endcsname{#2}%
% hyperlink number%
\expandafter\xdef\csname #1@hl\endcsname{\thelncount}%
% write command to aux%
\immediate\write\@auxout{\noexpand\expandafter\noexpand\gdef\noexpand\csname #1\endcsname{\csname #1\endcsname}}%
\immediate\write\@auxout{\noexpand\expandafter\noexpand\gdef\noexpand\csname #1@hl\endcsname{\thelncount}}%
}
%% can call commands even when they are not defined
\def\safe#1{%
\ifdefined#1%
#1%
\else%
{\color{red}\bf?}%
\fi%
}
%% itemize
\newlength\itemizeskip
% left margin for items
\setlength\itemizeskip{20pt}
\newlength\itemizeseparator
% space between the item symbol and the text
\setlength\itemizeseparator{5pt}
% penalty preceding an itemize
\def\itemizepenalty{0}
% counter counting the itemize level
\newcounter{itemizecount}
% item symbol
\def\itemizept#1{
\ifnum#1=1
\textbullet
\else
$\scriptstyle\blacktriangleright$
\fi
}
\newlength\current@itemizeskip
\setlength\current@itemizeskip{0pt}
\def\itemize{
\par\penalty\itemizepenalty\medskip\penalty\itemizepenalty
\addtocounter{itemizecount}{1}
\addtolength\current@itemizeskip{\itemizeskip}
\leftskip\current@itemizeskip
}
\def\enditemize{
\addtocounter{itemizecount}{-1}
\addtolength\current@itemizeskip{-\itemizeskip}
\par\leftskip\current@itemizeskip
\medskip
}
\newlength\itempt@total
\def\item{
\settowidth\itempt@total{\itemizept\theitemizecount}
\addtolength\itempt@total{\itemizeseparator}
\par
\medskip
\hskip-\itempt@total\itemizept\theitemizecount\hskip\itemizeseparator
}
%% enumerate
\newcounter{enumerate@count}
\def\enumerate{
\setcounter{enumerate@count}0
\let\olditem\item
\let\olditemizept\itemizept
\def\item{
% counter
\stepcounter{enumerate@count}
% set header
\def\itemizept{\theenumerate@count.}
% hyperref anchor
\hrefanchor
% define tag (for \label)
\xdef\tag{\theenumerate@count}
\olditem
}
\itemize
}
\def\endenumerate{
\enditemize
\let\item\olditem
\let\itemizept\olditemizept
}
%% end
\ian@defaultoptions
\endinput
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