%%%% Required Packages
\NeedsTeXFormat{LaTeX2e}
\ProvidesClass{UF-letterhead}[2018/07/28; A class file for writing official UF-letterhead.]
\LoadClass{article}
\RequirePackage{ifthenx}

\RequirePackage{xcolor}% Used to define UF official colors
\RequirePackage[top=2.5in,left=1.25in,bottom=1in,right=0.625in]{geometry}% Text margins are taken from UF-identity website
\RequirePackage{graphicx}% Used to include logo.
\RequirePackage[absolute]{textpos}% Used to position header/footer info precisely.
\RequirePackage{ifthenx}% Used to change versions.
\RequirePackage{fancyhdr}% Use to build the logo header and the other header/footer designs.



%%%% New Conditional Toggles
\newif\ifWebsiteVer% Turn this on with the command \WebsiteVertrue if you want the website letterhead.
\WebsiteVertrue
\newif\ifColored% Turn this off with the command \Coloredfalse to default to black and white versions.
\Coloredtrue


%% Package Options

%\DeclareOption*{\PassOptionsToClass{\CurrentOption}{article}}
\DeclareOption{color}{
% This option will convert the output to a layout suitable for a doc cam or projector.
\Coloredtrue
}

%\DeclareOption*{\PassOptionsToClass{\CurrentOption}{article}}
\DeclareOption{blkwht}{
% This option will convert the output to a layout suitable for a doc cam or projector.
\Coloredfalse
}


\DeclareOption{prev}{
% This option will print out the completed course notes, for TAs and/or as reference for the instructor.
\WebsiteVerfalse
}


\ProcessOptions\relax% 

%%% UF Colors
\definecolor{UFBlue}{RGB}{0,33,165}
\definecolor{UFOrange}{RGB}{250,70,22}


%%%%% Commands to hold some of the config data in case it should be changed at some point.
\providecommand{\UFCollege}{\setfontPal{\bf College of Liberal Arts and Sciences}}
\providecommand\UFDept{\setfontPal{\bf Department of Mathematics}}
\providecommand\UFlogofile{UF_Signature.eps}
\renewcommand{\headrulewidth}{0pt}


%%%% UF Typeset Requirements
%Remove paragraph indentation
\parindent0pt
\setlength{\parskip}{0.8\baselineskip}
\raggedright

\pagestyle{fancy}


% A command to set font to Palantino
\providecommand{\fontPalatino}{\fontfamily{ppl}\selectfont}
\DeclareTextFontCommand{\setfontPal}{\fontPalatino}

% Build the footer depending on which version of letterhead you want.
\renewcommand{\footrulewidth}{0pt}
\fancyfoot{}
\ifWebsiteVer
\fancyfoot[L]{%
    {\footnotesize\ifColored\color{UFBlue}\fi
    \setfontPal{An Equal Opportunity Institution}
    }}
\else
\fancyfoot[C]{%
    {\footnotesize\ifColored\color{UFBlue}\fi
    \setfontPal{An Equal Opportunity Institution}
    }}
\fi

%%%%% Build the UF frontpage header

\fancyhead[L]{%
\ifthenelse{\thepage < 2}{% Only display the header logo and address on first page.
    \begin{textblock*}{\textwidth}(1in,0.7in)
        \includegraphics[width=3in]{\UFlogofile}\\ \vspace{.2cm}\ifWebsiteVer\else\hrule\fi
    \end{textblock*}
    \begin{textblock*}{\textwidth}(1in,1.4in)   % 6.375=8.5 - 1.5 - 0.625
            \ifColored\color{UFBlue}\fi%
            \ifWebsiteVer%
            \hspace{2.25cm}%
            \UFCollege%
            \else%
                \UFDept%
            \fi\hfill 358 Little Hall%
        \\  \ifWebsiteVer%
                \hspace{2.25cm}%
                \UFDept%
            \fi%
                                    \hfill \setfontPal{PO Box 118105} \\
                                    \hfill \setfontPal{Gainesville, FL 32611-8105} \\
                                    \hfill \setfontPal{(352) 294-2350} \\
                                    \hfill \setfontPal{Fax (352) 392-8357}
    \end{textblock*}
    }{}%
}