%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%  Latex Slides Class for Technical Talks
%%  David J. Stracuzzi
%%  September 28, 2006
%%
%%
%%  Usage and commands:
%%  
%%  * Use \documentclass{techtalk} to load the both this class and the standard
%%    LaTeX2e slides class.
%%
%%  * Set the author, title and date with \author, \title and \date as usual.
%%
%%  * Set the author's institution with
%%    \affiliation{<department or lab>}{<university or company>}
%%
%%  * \emailaddress{<email address>} sets the author's email address
%%
%%  * \webaddress{<web address>} sets the author's web page address
%%
%%  * Use \maketitle to create the title slide as usual.
%%
%%  * \slidebkgdcolor{<color>} sets the background color of each slide 
%%    (default white)
%%
%%  * \slidetextcolor{<color>} sets the text color of each slide 
%%    (default black)
%%
%%  * \slidetitlecolor{<color>} sets the title color of each slide 
%%    (default blue)
%%
%%  * To create individual slides, use the \makeslide[4] command.
%%    \makeslide[<optional slide title>]
%%              {<vertical skip from title to content>}
%%              {<slide content (standard LaTeX formatting)>}
%%              {<slide notes (standard LaTeX)>}
%%    Example:
%%    \makeslide[Introduction]{0.25in}{
%%      \begin{itemize} \itemsep 0in
%%        \item Slide content goes here
%%        \item More content
%%      \end{itemize}
%%      \vspace{-2in}           <-- Add this to squeeze a little extra at bottom
%%    }{
%%      \begin{itemize}
%%        \item Note to self: this slide is BORING!
%%      \end{itemize}
%%    }
%%
%%  * The \onlynotes and \onlyslides commands work the same as in the standard
%%    LaTeX slides class.
%%
%%  * Use -t landscape option on dvips to properly format slides
%%    > dvips -t letter -t landscape -o slides.ps slides.dvi
%% 
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\NeedsTeXFormat{LaTeX2e}
\ProvidesClass{techtalk}
	      [2006/10/01 Technical Talk extension to slides class]
\DeclareOption*{\PassOptionsToClass{\CurrentOption}{letter}}
\ProcessOptions\relax

\LoadClass[landscape]{slides}
\RequirePackage{color}
\RequirePackage{graphicx}
\RequirePackage{ifthen}

\pagestyle{plain}

\setlength{\oddsidemargin}{-0.25in}
\setlength{\topmargin}{-1in}
\setlength{\textheight}{7in}
\setlength{\textwidth}{9.5in}

\newcounter{techtalkpage}
\setcounter{techtalkpage}{1}

\newcommand{\techtalkdept}{}
\newcommand{\techtalkinst}{}
\newcommand{\techtalkemail}{}
\newcommand{\techtalkweb}{}
\newcommand{\techtalkbkgdcolor}{white}
\newcommand{\techtalktextcolor}{black}
\newcommand{\techtalktitlecolor}{blue}

\newcommand{\affiliation}[2]
           {
	     \renewcommand{\techtalkdept}{#1}
	     \renewcommand{\techtalkinst}{#2}
	   }

\newcommand{\emailaddress}[1]{\renewcommand{\techtalkemail}{#1}}

\newcommand{\webaddress}[1]{\renewcommand{\techtalkweb}{#1}}

\newcommand{\slidebkgdcolor}[1]{\renewcommand{\techtalkbkgdcolor}{#1}}

\newcommand{\slidetextcolor}[1]{\renewcommand{\techtalktextcolor}{#1}}

\newcommand{\slidetitlecolor}[1]{\renewcommand{\techtalktitlecolor}{#1}}

\newcommand{\pagefoot}
           {
             \begin{picture}(677, 10)(0, 50)
               \put (0, 30){\line(1,0){680}}
	       \put (665, 15){\scalebox{0.75}{\thetechtalkpage}}
               \put (0, 20){\scalebox{0.5}{\@title}}
               \put (0, 10){\scalebox{0.5}{\@author}}
               \put (0,  0){\scalebox{0.5}{\techtalkdept}}
               \put (0,-10){\scalebox{0.5}{\techtalkinst}}
             \end{picture}
           }

\newcommand{\makeslide}[4][_EMPTY_]
           {
             \begin{slide}
	       \thispagestyle{empty}
	       \pagecolor{\techtalkbkgdcolor}
	       \color{\techtalktextcolor}
	       \centering
               \ifthenelse{\equal{#1}{_EMPTY_}}
                          {}
                          {\begin{tabular}{p{9.2in}}
                              \LARGE 
			      \textcolor{\techtalktitlecolor}
				        {\textbf{#1}} \\ \hline
			      \normalsize
                            \end{tabular}
                          }
                          \begin{minipage}[c]{9.25in}
                            \vspace*{#2}
			    #3

                          \end{minipage}
	       \vfill
               %\pagefoot
               \vspace{10pt}
             \end{slide}
	     \addtocounter{techtalkpage}{1}
             \begin{note}
	       \pagecolor{\techtalkbkgdcolor}
	       \color{\techtalktextcolor}
               #4
             \end{note}
           }

\renewcommand{\maketitle}
     {
       \begin{titlepage}
	 \pagecolor{\techtalkbkgdcolor}
	 \color{\techtalktextcolor}
	 \centering
	 \LARGE \textcolor{\techtalktitlecolor}{\textbf{\@title}} \\[3ex]
	 \large \@author \\[1.5ex]
	 \normalsize \techtalkemail \\
	 \techtalkweb \\[3ex]
	 \techtalkdept \\
	 \techtalkinst \\[3ex]
	 \@date
       \end{titlepage}
     }

\endinput