% \iffalse
%
% Single-source dtx file built on Will Robertson's dtxgallery single-source.dtx example. 
%
%<*internal>
\iffalse
%</internal>
%<*readme>
----------------------------------------------------------------
schedule.sty --- A style for personal weekly schedules
E-mail: edeneault@ut.edu
Released under the LaTeX Project Public License v1.3c or later
See http://www.latex-project.org/lppl.txt
----------------------------------------------------------------

This package defines the schedule environment. This is primarily intended for
constructing charts of recurring weekly appointments.  It may also
be used to create a schedule of events and sign-up sheets (for example,
scheduling mandatory office visits with students for discussing paper topics,
etc.)

This package requires the packages calc and xcolor.
%</readme>
%<*internal>
\fi
\begingroup
%</internal>
%<*batchfile>
\input docstrip.tex
\keepsilent\askforoverwritefalse
\preamble

This is a generated file.

Copyright (c) Ethan Deneault <edeneault@ut.edu>, 2019
                      (current maintainer)
Copyright (c) Jason Alexander, 1997-2001
                       (author)
                       
This file may be distributed and/or modified under the
conditions of the LaTeX Project Public License, either
version 1.3c of this license or (at your option) any later
version. The latest version of this license is in:

	http://www.latex-project.org/lppl.txt

and version 1.3c or later is part of all distributions of
LaTeX version 2005/12/01 or later.

\endpreamble
\usedir{tex/latex/schedule}
\generate{\file{\jobname.sty}{\from{\jobname.dtx}{package}}}
%</batchfile>
%<batchfile>\endbatchfile
%<*internal>
\generate{\file{\jobname.ins}{\from{\jobname.dtx}{batchfile}}}
\generate{\file{README.md}{\from{\jobname.dtx}{readme}}}
\endgroup
%</internal>
%
%<*driver>
\documentclass{ltxdoc}
\usepackage{schedule}
\EnableCrossrefs
\CodelineIndex
\RecordChanges
%\OnlyDescription
\begin{document}
\DocInput{\jobname.dtx} 
\end{document}
%</driver>
% \fi
%
%
% \changes{v1.00}{1997/10/11}{Initial version.}
% \changes{v1.10}{2019/7/26}{Clarified `noon' and `midnight' for 12:00}
% \changes{v1.20}{2019/7/31}{Added switches for 12-hour or 24-hour time notation}
%
% \GetFileInfo{schedule.sty}
%
% \DoNotIndex{\if,\else,\fi,\expandafter}
% \DoNotIndex{\csname,\endcsname}
% \DoNotIndex{\addtocounter,\stepcounter,\advance,\Alph,\alph,\arabic}
% \DoNotIndex{\begin,\end,\begingroup,\endgroup,\catcode,\centerline,\day,\def}
% \DoNotIndex{\divide,\do,\edef,\endgroup,\evensidemargin,\fbox,\gdef,\global}
% \DoNotIndex{\headheight,\headsep,\hfill,\hphantom,\Huge,\ifnum,\ifx,\large}
% \DoNotIndex{\long,\m@ne,\mbox,\medskip,\message,\month,\multiply}
% \DoNotIndex{\noindent,\nopagebreak,\normalsize,\oddsidemargin,\pagebreak}
% \DoNotIndex{\par,\relax,\rightmargin,\roman,\setcounter,\setlength}
% \DoNotIndex{\smallskipamount,\space,\textheight,\textsf,\textwidth}
% \DoNotIndex{\the,\topmargin,\undefined,\underline,\value,\vspace}
% \DoNotIndex{\xdef,\year,\z@,\time,\topsep}
%
% \title{The \textsf{schedule} package\thanks{This file
%        has version number \fileversion, last
%        revised \filedate.}}
% \author{Jason Alexander \\
%		Ethan Deneault\footnote{Current maintainer, please send bug reports to:
%              \texttt{edeneault@ut.edu}}}
% \date{\filedate}
% \maketitle
%
% \MakeShortVerb{\|}
%
% \begin{abstract}
%This package defines the {\ttfamily schedule} environment. This is primarily intended for
%constructing charts of recurring weekly appointments.  It may also
%be used to create a schedule of events and sign-up sheets (for example,
%scheduling mandatory office visits with students for discussing paper topics,
%etc.)
%
%This package requires the packages {\ttfamily calc} and {\ttfamily xcolor}.
% \end{abstract}
%
% \section{Introduction}
% \texttt{schedule} provides a simple interface for creating graphical charts
% displaying weekly appointments.  Many respects of the overall layout can be
% customized to suit the user's desires.  Unless these default settings are
% changed, the created schedule will run from Monday to Friday, 8:00am to 5:00pm,
% and the only predefined command to insert appointments will be |\class|, which
% draws the appointment using black text on a medium-gray background.
%
% The main feature of the \texttt{schedule} package is its accuracy in
% diagramming the length of appointments.  Unlike some professionally available
% schedule creation programs, the representation of the length of appointments in
% the \texttt{schedule} package is accurate to the minute.  In other
% words, if you have two appointments, one running from 2:00pm to 3:30pm on
% Tuesday and another running from 2:00pm to 3:31pm on Wednesday, there is a
% visible difference between the two representations.  Unfortunately, unless you
% have a high-resolution printer (by which I mean more than 600 dpi) these
% differences will likely only be noticeable by a on-screen previewing program like
% \texttt{ghostview}.
%
% \section{Examples}
%
% The following schedule is typeset using the commands:
%
% \pagebreak
%
% \begin{verbatim}
% \CellHeight{.4in}
% \CellWidth{1in}
% \TimeRange{12:00-15:00}
% \SubUnits{30}
% \BeginOn{Monday}
% \TextSize{\tiny}
% \FiveDay
% \TwelveHour
%
% \NewAppointment{meeting}{red}{white}
% \NewAppointment{workshop}{green}{blue}
%
% \begin{schedule}[Fall Quarter, 1997]
%   \class{Moral Philosophy}{HOB2 233}{M}{14:00-16:50}
%   \class{Math Logic}{EIC 128}{T,Th}{11:00-12:20}
%   \class{Critical Reasoning}{SSL 290}{M,W,F}{13:00-13:50}
%   \meeting{Departmental Meeting}{HOB2 233}{W}{12:00-12:50}
%   \workshop{Crit. Reas. Workshop}{HOB2 233}{T}{13:00-13:50}
%   \class{Office Hours}{HOB2 210}{W,F}{14:00-14:50}
% \end{schedule}
% \end{verbatim}
%
% The result is:
% \CellHeight{.4in}
% \CellWidth{1in}
% \TimeRange{12:00-15:00}
% \SubUnits{30}
% \BeginOn{Monday}
% \TextSize{\tiny}
% \FiveDay
% \TwelveHour
%
% \NewAppointment{meeting}{red}{white}
% \NewAppointment{workshop}{green}{blue}
%
%\begin{schedule}[Fall Quarter, 1997]%
%  \class{Moral Philosophy}{HOB2 233}{M}{14:00-16:50}
%  \class{Math Logic}{EIC 128}{T,Th}{11:00-12:20}
%  \class{Critical Reasoning}{SSL 290}{M,W,F}{13:00-13:50}
%  \meeting{Departmental Meeting}{HOB2 233}{W}{12:00-12:50}
%  \workshop{Crit. Reas. Workshop}{HOB2 233}{T}{13:00-13:50}
%  \class{Office Hours}{HOB2 210}{W,F}{14:00-14:50}
%\end{schedule}%
%
% This example demonstrates all of the user-customizable options.  Note
% several ``features'' of the package:
% \begin{enumerate}
%    \item Appointments falling outside of the specified time range
%          for the schedule are automatically truncated to fit.  If the
%          appointment falls entirely outside of the time range, it is not
%          printed at all.
%
%    \item The command |\class| is predefined to chart appointments pertaining
%          to class attendence.  New appointment types may be defined by the
%          user via the |\NewAppointment| command.  The new appointments may
%          use any predefined color for the text or background.  Note that the
%          \textsf{color} package allows one to define new colors.
%
%    \item The boxes created to represent appointments are sized to be
%          accurate to the minute.  In other words, if you have two
%          appointments, one 52 minutes long and the other 53 minutes long, the
%          box representing the second appointment will be slightly longer.
%
%    \item The schedule is typeset in a centered displayed environment.
% \end{enumerate}
%
% \section{User Commands}
%
% \begin{macro}{\CellHeight}
% Including |\CellHeight|\meta{length} before the \textsf{schedule} environment
% tells \LaTeXe\ what height to make the cells in the schedule (all cells have
% the same height).  Since a
% cell corresponds to an hour in the schedule, this command allows the user to
% specify how much vertical space a single hour ought to take up.
% \end{macro}
%
% \begin{macro}{\CellWidth}
% Including |\CellWidth|\meta{width} before the \textsf{schedule} environment
% tells \LaTeXe\ how wide to make every cell in the schedule.  The overall
% width of the schedule is determined by multiplying this value by the number of
% days (set by the |\FiveDay| or |\SevenDay| command), plus the width of the
% time labels on the left-hand side.
% \end{macro}
%
% \begin{macro}{\TimeRange}
% This command must appear before the \textsf{schedule} environment, otherwise
% \LaTeXe\ will not know how deep to make the grid.  It is important to note
% that the time range is specified using a 24-hour format, with a \emph{single}
% hyphen between the two times.  Deviating from this format will generate an
% error.
% \end{macro}
%
% \begin{macro}{\SubUnits}
% The |\SubUnits|\meta{number} tells the package how to subdivide the hour.  If
% one does not want any subdivisions, simply use |\SubUnits{60}|.  The value of
% \meta{number} can be any number than evenly divides 60.  It is assumed that,
% in specifying this value, you know what you are doing: i.e., if you tell
% \LaTeXe\ to use a |\CellHeight| of 1in, but then set |\SubUnits{3}|, you will
% get 20 subdivisions (with times) in a cell only 1in high.  In other words, the
% text on the left-hand side of the schedule will be typeset as a horrible mess.
% The solution is simple: if you want a large number of subdivisions, simply set
% |\CellHeight| to a greater value.
% \end{macro}
%
% \begin{macro}{\BeginOn}
% Including |\BeginOn|\meta{day} tells \LaTeX\ what day of the week to start
% the schedule on.  The possible values are `Sunday', `Monday', `Tuesday', `Wednesday',
% `Thursday', `Friday', or `Saturday'.  My apologies for non-English speaking
% users of \LaTeX.  If there is a demand for it, I will fix this in future
% releases.
% \end{macro}
%
% \begin{macro}{\TextSize}
% With the |\TextSize|\meta{font-size} command, the user tells \LaTeX\ what
% size font to use when typesetting the text inside the boxes.  This command
% ought to be one of the standard \LaTeX\ font-size commands, e.g., |\tiny|,
% |\scriptsize|, etc.  Using two large of a font will almost always result in
% bad line breaks inside the boxes, though, due to the narrow width of a cell.
% \end{macro}
%
% \begin{macro}{\FiveDay}
% Tells \LaTeX\ to typeset a five-day schedule.
% \end{macro}
%
% \begin{macro}{\SevenDay}
% Tells \LaTeX\ to typeset a seven-day schedule.
% \end{macro}
%
% \begin{macro}{\TwelveHour}
% Tells \LaTeX\ to typeset times using a 12-hour clock.
% \end{macro}
%
% \begin{macro}{\TwentyFourHour}
% Tells \LaTeX\ to typeset times using a 24-hour clock. 
% \end{macro}
%
% \begin{macro}{\NewAppointment}
% By using the |\NewAppointment| command, the user can customize the appearance
% of the schedule by changing the color of the text or the background color.
% The syntax is |\NewAppointment|\meta{appointment-name}\meta{background-color}\meta{text-color}.
% \end{macro}
%
% \StopEventually{}
%\newpage
%\section{Source Code}
% \iffalse
%<*package> 
% \fi
%    \begin{macrocode}
\ProvidesFile{schedule.sty}
\NeedsTeXFormat{LaTeX2e}[2005/12/01]
\ProvidesPackage{schedule}[2019/7/31 v1.20 schedule package]
\RequirePackage{calc}
\RequirePackage{xcolor}
\definecolor{dark}{gray}{.75}
%
% CONSTANTS FOR THE WEEK
%
\def\@sunday{Su}
 \def\@Sunday{Sunday}
\def\@monday{M}
 \def\@Monday{Monday}
\def\@tuesday{T}
 \def\@Tuesday{Tuesday}
\def\@wednesday{W}
 \def\@Wednesday{Wednesday}
\def\@thursday{Th}
 \def\@Thursday{Thursday}
\def\@friday{F}
 \def\@Friday{Friday}
\def\@saturday{Sa}
 \def\@Saturday{Saturday}
%
% COUNTERS, LENGTHS, ETC.
%
\newlength{\cell@height}
 \setlength{\cell@height}{1in}
\newlength{\cell@width}
 \setlength{\cell@width}{1in}
\newlength{\box@depth}
\newcounter{sch@col@width} \setcounter{sch@col@width}{60}
\newlength{\box@width}
 \setlength{\box@width}{1in*(\value{sch@col@width}/60)}
\newlength{\col@width}
 \setlength{\col@width}{1in*(\value{sch@col@width}/60)}
\newlength{\sch@depth} \setlength{\sch@depth}{9in}
\newlength{\fill@length}
\newlength{\@temp@length}
\newlength{\@@temp@length}
\newlength{\line@thickness} % The thickness of the lines in the drawing
 \setlength{\line@thickness}{.4pt}
\newlength{\adjusted@cell@width}
\newlength{\adjusted@cell@height}

\newcounter{picture@units@wide}
\newcounter{xcoords}
\newcounter{ycoords}
\newcounter{timea}
\newcounter{timeb}
\newcounter{grid@width}
\newcounter{grid@height}
\newcounter{number@of@cells} % The number of VERTICAL cells
\newcounter{number@of@subcells}
\newcounter{number@of@days} % The number of days in the grid
\newcounter{dp@vlines} % The number of vertical lines actually needed is
                       % \value{number@of@days} + 1 ...
\newcounter{dp@hlines} % The number of horizontal lines actually needed is
                       % \value{number@of@cells} + 1 ...
\newcounter{dp@hcell@lines} % The number of horizontal lines that are
                       % either (1) associated with an hour, or
                       %        (2) on the top or bottom of the grid.
\newcounter{pu@cell@width}
\newcounter{pu@cell@height}
 \setcounter{pu@cell@height}{60}
\newcounter{pu@grid@top}
\newcounter{pu@grid@width}
\newcounter{pu@subticks}
\newcounter{start@time}
\newcounter{end@time}
\newcounter{x@coord} % Temporary x-coordinate
\newcounter{y@coord} % Temporary y-coordinate
\newcounter{@tempc}
\newcounter{@tempd}
\newcounter{label@sep}  % distance from label to gride
 \setcounter{label@sep}{5} %initialized to 5 picture units

\newcounter{x@Sunday}
\newcounter{x@Monday}
\newcounter{x@Tuesday}
\newcounter{x@Wednesday}
\newcounter{x@Thursday}
\newcounter{x@Friday}
\newcounter{x@Saturday}

\newsavebox{\temp@box}
\newif\ifweekends
\newif\iftwelve
\newcount\@i
\newcount\@j

\def\TimeRange#1{\compute@number@of@cells #1\end@compute}
\def\compute@number@of@cells#1:#2-#3:#4\end@compute{%
  \setcounter{number@of@cells}{#3-#1}%
  \setcounter{start@time}{#1}%
  \setcounter{end@time}{#3}}

\def\TextSize#1{\def\appt@textsize{#1}}
\TextSize{\scriptsize}

\def\IncludeWeekends{\weekendstrue}
\def\NoWeekends{\weekendsfalse}

\def\SevenDay{\weekendstrue}
\def\FiveDay{\weekendsfalse}
\def\TwelveHour{\twelvetrue}
\def\TwentyFourHour{\twelvefalse}

\def\CellHeight#1{\setlength{\cell@height}{#1}%
                  \setlength{\unitlength}{\cell@height*\ratio{1pt}{60pt}}}
\def\CellWidth#1{\setlength{\cell@width}{#1}%
                 \setcounter{pu@cell@width}{1*\ratio{\cell@width}{\unitlength}}}
\def\SubUnits#1{\setcounter{pu@subticks}{#1}%
                \setcounter{number@of@subcells}{60/\value{pu@subticks}}}

\def\calculate@grid@dimensions{%
  \ifweekends \setcounter{number@of@days}{7}
   \else \setcounter{number@of@days}{5}%
    \fi%
  \setcounter{dp@hcell@lines}{\value{number@of@cells}+1}
  \setcounter{grid@width}{\value{number@of@days}*\value{pu@cell@width}}%
  \setcounter{grid@height}{\value{number@of@cells}*60}
  \setcounter{dp@vlines}{\value{number@of@days}+1}
  \setcounter{dp@hlines}{\value{number@of@cells}*(60/\value{pu@subticks}) + 1}}


\def\draw@grid{%\calculate@grid@dimensions
  \linethickness{.2pt}%
  \multiput(0,0)(0,\value{pu@subticks}){\value{dp@hlines}}{\line(1,0){\value{grid@width}}}%
  \thicklines
  \multiput(0,0)(0,60){\value{dp@hcell@lines}}{\line(1,0){\value{grid@width}}}
  \thinlines}

\def\LineThickness#1{\setlength{\line@thickness}{#1}%
                     \linethickness{\line@thickness}%
                     \setlength{\adjusted@cell@width}{\cell@width - 1\line@thickness}
                     \setlength{\adjusted@cell@height}{\cell@height - 1\line@thickness}}


\def\@Su@week{{Sunday} {Monday} {Tuesday} {Wednesday} {Thursday} {Friday} {Saturday}}
\def\@M@week{{Monday} {Tuesday} {Wednesday} {Thursday} {Friday} {Saturday} {Sunday}}
\def\@T@week{{Tuesday} {Wednesday} {Thursday} {Friday} {Saturday} {Sunday} {Monday}}
\def\@W@week{{Wednesday} {Thursday} {Friday} {Saturday} {Sunday} {Monday} {Tuesday}}
\def\@Th@week{{Thursday} {Friday} {Saturday} {Sunday} {Monday} {Tuesday} {Wednesday}}
\def\@F@week{{Friday} {Saturday} {Sunday} {Monday} {Tuesday} {Wednesday} {Thursday}}
\def\@Sa@week{{Saturday} {Sunday} {Monday} {Tuesday} {Wednesday} {Thursday} {Friday}}

\def\BeginOn#1{\def\start@day{#1}}

\def\add@labels{%
 \ifx\start@day\@Sunday \expandafter\do@days\@Su@week \relax
  \else\ifx\start@day\@Monday \expandafter\do@days\@M@week \relax
   \else\ifx\start@day\@Tuesday \expandafter\do@days\@T@week \relax
    \else\ifx\start@day\@Wednesday \expandafter\do@days\@W@week \relax
     \else\ifx\start@day\@Thursday \expandafter\do@days\@Th@week \relax
      \else\ifx\start@day\@Friday \expandafter\do@days\@F@week \relax
       \else\expandafter\do@days\@Sa@week \relax
    \fi\fi\fi\fi\fi\fi}


\def\@sfor #1:=#2 \upto #3 \step #4 \do #5{%
  #1=#2\relax%
  \@whilenum #1<#3 \do {#5 \advance#1 by #4}#5}

\def\add@times{%
  \setcounter{@tempc}{\value{start@time}}%
  \@sfor \@i :=0 \upto \value{number@of@cells} \step 1 \do%
    {\setcounter{x@coord}{0}%                               Set the x-coord right
     \setcounter{y@coord}{\value{grid@height}-60*\@i}%      adjust for the right hour cell
     \ifnum\value{@tempc}=0%
        \iftwelve
           \setcounter{@tempd}{\value{@tempc}+12}%
           \put(\value{x@coord},\value{y@coord}){%
           \makebox(0,0)[r]{\the@tempd:00~midnight~~}}% Midnight Hack
        \else
           \setcounter{@tempd}{\value{@tempc}}%
           \put(\value{x@coord},\value{y@coord}){%
           \makebox(0,0)[r]{\the@tempd:00~~}}% Midnight Hack
        \fi
     \else\ifnum\value{@tempc}=24%
        \iftwelve
           \setcounter{@tempd}{\value{@tempc}-12}%
           \put(\value{x@coord},\value{y@coord}){%
           \makebox(0,0)[r]{\the@tempd:00~midnight~}}% Midnight Hack
        \else
           \setcounter{@tempd}{\value{@tempc}}%
           \put(\value{x@coord},\value{y@coord}){%
           \makebox(0,0)[r]{\the@tempd:00~~}}% Midnight Hack
        \fi   
     \else\ifnum\value{@tempc}>12%
        \iftwelve
           \setcounter{@tempd}{\value{@tempc}-12}%
           \put(\value{x@coord},\value{y@coord}){%
           \makebox(0,0)[r]{\the@tempd:00~pm~}}%
        \else
           \setcounter{@tempd}{\value{@tempc}}%
           \put(\value{x@coord},\value{y@coord}){%
           \makebox(0,0)[r]{\the@tempd:00~~}}%
        \fi
     \else\ifnum\value{@tempc}=12%
        \iftwelve
           \setcounter{@tempd}{\value{@tempc}}%
           \put(\value{x@coord},\value{y@coord}){%
           \makebox(0,0)[r]{\the@tempd:00~noon~}}% Noontime Hack
        \else
           \setcounter{@tempd}{\value{@tempc}}%
           \put(\value{x@coord},\value{y@coord}){%
           \makebox(0,0)[r]{\the@tempd:00~~}}%
        \fi
     \else
        \iftwelve
           \put(\value{x@coord},\value{y@coord}){%
           \makebox(0,0)[r]{\the@tempc:00~am~}}%
        \else
           \put(\value{x@coord},\value{y@coord}){%
           \makebox(0,0)[r]{\the@tempc:00~~}}%
        \fi
     \fi\relax%
     \fi\relax%
     \fi\relax%
     \fi\relax%
     \@sfor \@j := \value{pu@subticks} \upto 59 \step \value{pu@subticks} \do%
       {\ifnum\@i=\value{number@of@cells}%  Test to see if this should be the last label
           \relax%
        \else%
           \ifnum\@j=60%
             \relax%
           \else%
             \ifnum\@j<10%
               \def\the@minutes{0\the\@j}%
             \else\def\the@minutes{\the\@j}%
             \fi%
             \setcounter{y@coord}{\value{y@coord}-\@j}%
             \ifnum\value{@tempc}=0%
                \iftwelve
                   \setcounter{@tempd}{\value{@tempc}+12}%
                   \put(\value{x@coord},\value{y@coord}){%
                   \makebox(0,0)[r]{\tiny\the@tempd:\the@minutes~am~}}% Hack to get 12:xx AM right.
                \else
                   \setcounter{@tempd}{\value{@tempc}}%
                   \put(\value{x@coord},\value{y@coord}){%
                   \makebox(0,0)[r]{\tiny\the@tempd:\the@minutes~~}}
                \fi
             \else\ifnum\value{@tempc}=24%
                \iftwelve
                   \setcounter{@tempd}{\value{@tempc}-12}%
                   \put(\value{x@coord},\value{y@coord}){%
                   \makebox(0,0)[r]{\tiny\the@tempd:\the@minutes~am~}}% Hack to get 12:xx AM right.
                \else
                   \setcounter{@tempd}{\value{@tempc}}%
                   \put(\value{x@coord},\value{y@coord}){%
                   \makebox(0,0)[r]{\tiny\the@tempd:\the@minutes~~}}
                \fi
             \else\ifnum\value{@tempc}>12%
                \iftwelve
                   \setcounter{@tempd}{\value{@tempc}-12}%
                   \put(\value{x@coord},\value{y@coord}){%
                   \makebox(0,0)[r]{\tiny\the@tempd:\the@minutes~pm~}}% ...write the time (using pm)...
                \else
                   \setcounter{@tempd}{\value{@tempc}}%
                   \put(\value{x@coord},\value{y@coord}){%
                   \makebox(0,0)[r]{\tiny\the@tempd:\the@minutes~~}}
                \fi
             \else\ifnum\value{@tempc}=12%
                \iftwelve
                   \setcounter{@tempd}{\value{@tempc}}%
                   \put(\value{x@coord},\value{y@coord}){%
                   \makebox(0,0)[r]{\tiny\the@tempd:\the@minutes~pm~}}% Hack to get 12:xx PM right.
                \else
                   \setcounter{@tempd}{\value{@tempc}}%
                   \put(\value{x@coord},\value{y@coord}){%
                   \makebox(0,0)[r]{\tiny\the@tempd:\the@minutes~~}}
                \fi
             \else
                \iftwelve             
                   \put(\value{x@coord},\value{y@coord}){%
                   \makebox(0,0)[r]{\tiny\the@tempc:\the@minutes~am~}}% ...write the time (using am).
                \else
                   \put(\value{x@coord},\value{y@coord}){%
                   \makebox(0,0)[r]{\tiny\the@tempc:\the@minutes~~}}
                \fi
             \fi%
             \fi%
             \fi%
           \fi%
        \fi%
        \fi%
        \setcounter{y@coord}{\value{y@coord}+\@j}}
     \addtocounter{@tempc}{1}}}%

\def\do@days#1#2#3#4#5#6#7{%
  \setcounter{x@coord}{1*\ratio{\value{pu@cell@width} pt}{2 pt}}%
  \setcounter{y@coord}{\value{grid@height}+\value{label@sep}}%
  \put(\value{x@coord},\value{y@coord}){\makebox(0,0)[b]{\large #1}}%
  \setcounter{x@coord}{\value{x@coord}+\value{pu@cell@width}}%
  \put(\value{x@coord},\value{y@coord}){\makebox(0,0)[b]{\large #2}}%
  \setcounter{x@coord}{\value{x@coord}+\value{pu@cell@width}}%
  \put(\value{x@coord},\value{y@coord}){\makebox(0,0)[b]{\large #3}}%
  \setcounter{x@coord}{\value{x@coord}+\value{pu@cell@width}}%
  \put(\value{x@coord},\value{y@coord}){\makebox(0,0)[b]{\large #4}}%
  \setcounter{x@coord}{\value{x@coord}+\value{pu@cell@width}}%
  \put(\value{x@coord},\value{y@coord}){\makebox(0,0)[b]{\large #5}}%
  \setcounter{x@coord}{\value{x@coord}+\value{pu@cell@width}}%
  \ifweekends
  \put(\value{x@coord},\value{y@coord}){\makebox(0,0)[b]{\large #6}}%
  \setcounter{x@coord}{\value{x@coord}+\value{pu@cell@width}}%
  \put(\value{x@coord},\value{y@coord}){\makebox(0,0)[b]{\large #7}}\fi}


\def\set@x@coords@for@days{%
  \ifx\start@day\@Sunday%
    \@i=0\relax%
    \@tfor \@temp := {Sunday} {Monday} {Tuesday} {Wednesday} {Thursday} {Friday} {Saturday} \do%
      {\setcounter{x@\@temp}{\@i*\value{pu@cell@width}}%
       \advance\@i by 1}
    \def\skipday@i{F}
    \def\skipday@ii{Sa}\fi
  \ifx\start@day\@Monday
    \@i=0\relax%
    \@tfor \@temp := {Monday} {Tuesday} {Wednesday} {Thursday} {Friday} {Saturday} {Sunday} \do%
      {\setcounter{x@\@temp}{\@i*\value{pu@cell@width}}%
       \advance\@i by 1}
    \def\skipday@i{Sa}
    \def\skipday@ii{Su}\fi
  \ifx\start@day\@Tuesday
    \@i=0\relax%
    \@tfor \@temp := {Tuesday} {Wednesday} {Thursday} {Friday} {Saturday} {Sunday} {Monday} \do%
      {\setcounter{x@\@temp}{\@i*\value{pu@cell@width}}%
       \advance\@i by 1}
    \def\skipday@i{Su}
    \def\skipday@ii{M}\fi
  \ifx\start@day\@Wednesday
    \@i=0\relax%
    \@tfor \@temp := {Wednesday} {Thursday} {Friday} {Saturday} {Sunday} {Monday} {Tuesday} \do%
      {\setcounter{x@\@temp}{\@i*\value{pu@cell@width}}%
       \advance\@i by 1}
    \def\skipday@i{M}
    \def\skipday@ii{T}\fi
  \ifx\start@day\@Thursday
    \@i=0\relax%
    \@tfor \@temp := {Thursday} {Friday} {Saturday} {Sunday} {Monday} {Tuesday} {Wednesday} \do%
      {\setcounter{x@\@temp}{\@i*\value{pu@cell@width}}%
       \advance\@i by 1}
    \def\skipday@i{T}
    \def\skipday@ii{W}\fi
  \ifx\start@day\@Friday
    \@i=0\relax%
    \@tfor \@temp := {Friday} {Saturday} {Sunday} {Monday} {Tuesday} {Wednesday} {Thursday} \do%
      {\setcounter{x@\@temp}{\@i*\value{pu@cell@width}}%
       \advance\@i by 1}
    \def\skipday@i{W}
    \def\skipday@ii{Th}\fi
  \ifx\start@day\@Saturday
    \@i=0\relax%
    \@tfor \@temp := {Saturday} {Sunday} {Monday} {Tuesday} {Wednesday} {Thursday} {Friday} \do%
      {\setcounter{x@\@temp}{\@i*\value{pu@cell@width}}%
       \advance\@i by 1}
    \def\skipday@i{Th}
    \def\skipday@ii{F}\fi
  }

% ------------------------------------------------------------------------
% Commands to insert info about an appointment
% ------------------------------------------------------------------------
\newif\ifset@start@time
\newif\ifset@end@time
\newif\ifsetboxdepth
\newif\ifinrange

\def\NewAppointment#1#2#3{% #1 = name, #2 = background color, #3 = textcolor
  \expandafter\def\csname #1\endcsname##1##2##3##4{%
     \setboxdepthtrue% assume we want to calculate the box depth
     \inrangetrue% assume the appt is in range
     \set@start@timetrue% assume we want to calculate the start time
     \set@end@timetrue% assume we want to calculate the end time
     \@includetrue% assume we will include it
     \edef\appt@name{#1}% save the appt name
     \edef\appt@color{#2}% save the background color
     \edef\appt@textcolor{#3}% save the save color
     \expandafter\def\csname #1@name\endcsname{##1}% save the name
     \expandafter\def\csname #1@location\endcsname{##2}% save the loc.
     \expandafter\def\csname #1@days\endcsname{##3}% save the days
     \expandafter\def\csname #1@time\endcsname{##4}% save the time
     \place@appt@box##3,\stop}}

\NewAppointment{class}{dark}{black}

\def\place@appt@box#1{%
  \ifx#1\stop \let\@next=\@gobble%
   \else \let\@next=\set@x@coords\fi\@next#1}

\def\set@x@coords#1,{\def\the@day{#1}%
 \ifx\the@day\@sunday\setcounter{xcoords}{\value{x@Sunday}}%
  \else\ifx\the@day\@monday\setcounter{xcoords}{\value{x@Monday}}%
   \else\ifx\the@day\@tuesday\setcounter{xcoords}{\value{x@Tuesday}}%
    \else\ifx\the@day\@wednesday\setcounter{xcoords}{\value{x@Wednesday}}%
     \else\ifx\the@day\@thursday\setcounter{xcoords}{\value{x@Thursday}}%
      \else\ifx\the@day\@friday\setcounter{xcoords}{\value{x@Friday}}%
       \else\setcounter{xcoords}{\value{x@Saturday}}%
        \fi\fi\fi\fi\fi\fi%
         \edef\@@temp{\csname \appt@name @time\endcsname}%
          \expandafter\set@y@coords\@@temp\stop}

\def\set@y@coords#1:#2-#3:#4\stop{%
  \def\@starthour{#1}%
  \def\@startminutes{#2}
  \def\@endhour{#3}%
  \def\@endminutes{#4}%
  \ifnum#1<\value{start@time} \setcounter{ycoords}{\value{grid@height}}%
                              \edef\@starthour{\value{start@time}}
                              \def\@startminutes{0}
                              \set@start@timefalse%
                              \fi%
  \ifnum#3<\value{end@time} \relax%
    \else \edef\@endhour{\value{end@time}}
          \def\@endminutes{0}%
          \setcounter{ycoords@bot}{0}
          \set@end@timefalse
  \fi %
  \ifset@start@time%
   \setcounter{ycoords}{\value{grid@height}-(60*(#1-\value{start@time})+#2)}\fi%
  \ifset@end@time%
    \setcounter{ycoords@bot}{\value{grid@height}-(60*(#3-\value{start@time})+#4)}\fi%
  \setlength{\box@depth}{\@endhour\cell@height + (\cell@height*\ratio{\@endminutes pt}{60pt}) %
         - \@starthour\cell@height - (\cell@height*\ratio{\@startminutes pt}{60pt})}%
  \ifnum#1<\value{end@time} \relax\else \inrangefalse \fi%
  \draw@appt@box\place@appt@box}

\newif\if@include

\def\draw@appt@box{%
   \ifweekends \relax % if we use 7-days, this won't change
   \else \ifx \the@day\skipday@i \@includefalse \fi % first condition for change
         \ifx \the@day\skipday@ii \@includefalse \fi\fi % second condition for change
  \ifinrange \relax\else \@includefalse \fi %
  \if@include %
  \put(\value{xcoords},\value{ycoords}){\colorbox{\appt@color}{\parbox[t]{\cell@width}{\ %
        \vspace{\box@depth}}}}
  \thinlines
  \put(\value{xcoords},\value{ycoords}){\line(1,0){\value{pu@cell@width}}}
  \put(\value{xcoords},\value{ycoords@bot}){\line(1,0){\value{pu@cell@width}}}
  \put(\value{xcoords},\value{ycoords}){%
        \  \parbox[t]{\cell@width-8pt}{\mbox{}\\ \appt@textsize %
        \ifdim\box@depth>\baselineskip
        \textcolor{\appt@textcolor}{\csname \appt@name @name\endcsname} \\ %
        \ifdim\box@depth>2\baselineskip
        \textcolor{\appt@textcolor}{\csname \appt@name
        @location\endcsname}\fi\fi }}\fi}

\def\convert@class@time#1:#2-#3:#4\end@time{%
  {\count1=#1\relax%
   \count3=#3\relax%
   \ifnum#1>12 \advance\count1 by -12\fi\relax%
   \ifnum#3>12 \advance\count3 by -12\fi\relax%
   \ifnum#1<12\relax%
    \ifnum#3<12\relax \mbox{\the\count1:#2am--\the\count3:#4am}\relax%
     \else \mbox{\the\count1:#2am--\the\count3:#4pm}\fi\relax%
      \else \mbox{\the\count1:#2pm--\the\count3:#4pm}\fi\relax}}

\def\compute@box@depth#1:#2-#3:#4\end@bx{%
  \setlength{\box@depth}{#3\cell@height + (\cell@height*\ratio{#4pt}{60pt}) %
         - #1\cell@height - (\cell@height*\ratio{#2pt}{60pt})}}

\newcounter{ycoords@bot}

\newcounter{x@tempa}
\newcounter{x@tempb}
\newcounter{y@tempa}
\newcounter{y@tempb}
\newcounter{temp@cnt@a}

\newlength{\title@height}
\newlength{\label@height}
 \settoheight{\label@height}{Wednesday}

\newcounter{pu@label@width}
\newlength{\center@hack}

\newenvironment{schedule}[1][:]%
{\bigskip
 \calculate@grid@dimensions%
 \setcounter{pu@grid@width}{\value{pu@cell@width}*\value{number@of@days}}%
 \settowidth{\@temp@length}{\normalsize 12:00\ pm\ }%
 \setcounter{pu@label@width}{1*\ratio{\@temp@length}{\unitlength}}%
 \setcounter{pu@grid@top}{\value{grid@height}+(1*\ratio{\label@height}{\unitlength}) + %
    (1*\ratio{.25in}{\unitlength})}%
 \if#1:\relax \else%
  \settoheight{\title@height}{\large #1}%
  \addtocounter{pu@grid@top}{1*\ratio{\title@height}{\unitlength}}%
 \fi%
 \setlength{\center@hack}{(.5\linewidth-.5\unitlength*\value{pu@grid@width}+%
   .5\unitlength*\value{pu@label@width})}%
 \noindent\hspace*{\center@hack}%
 \begin{picture}(\value{pu@grid@width},\value{pu@grid@top})%
 \draw@grid
 \add@labels
 \if#1:\relax \else
  \setcounter{ycoords}{\value{grid@height}+(1*\ratio{\label@height}{\unitlength}) + %
     (1*\ratio{.25in}{\unitlength})}
  \setcounter{xcoords}{1*\ratio{\value{pu@grid@width} pt}{2 pt}}
 \put(\value{xcoords},\value{ycoords}){\makebox(0,0)[b]{\Large #1}}
 \fi
 \add@times
 \set@x@coords@for@days}
{\multiput(0,0)(\value{pu@cell@width},0){\value{dp@vlines}}{\line(0,1){\value{grid@height}}}
 \end{picture}\bigskip}

\setlength{\fboxsep}{0in}
%    \end{macrocode} 
% \iffalse
%</package> 
% \fi
% \newpage
% \PrintChanges
% \PrintIndex
% \Finale