\documentclass[mtpro2,twoside,openany]{litesolution}

\usepackage[listings]{tcolorbox}
\lstset{language=[LaTeX]TeX,basicstyle=\small\ttfamily,breaklines=true,columns=flexible}

\title{\sffamily The \pkg{LiteSolution} Class}
\subtitle{\sffamily\scshape Hangzhou Dianzi University}
\bioinfo{Mingyu Hsia (\mailto{xiamyphys@hdu.edu.cn})\quad|\quad\today\quad|\quad Version 2.2b}
\cover[checkerboard]{schrodinger}\coverhead[3]{universe}

\begin{document}

\maketitle[DarkSlateGray]
\frontmatter\tableofcontents\mainmatter
\chapterimage{\UPFadingImage*[trim={0 {.9\paperheight} 0 0},clip]{Beautiful-realities}}

\chapter{Introduction to the \pkg{LiteSolution} Class}

\section{Preface}

This is the document for the \pkg{LiteSolution} class, which is designed for typesetting solutions of problems in exams, textbooks, etc.

Welcome to feedback bugs or ideas via email \href{mailto:xiamyphys@hdu.edu.cn}{\ttfamily xiamyphys@hdu.edu.cn} or \href{https://github.com/xiamyphys/litesolution}{GitHub}.

\subsection{Installing \pkg{LiteSolution} and loading it}

Simply download \verb|litesolution.cls| file from \href{https://github.com/xiamyphys/litesolution}{GitHub} or \href{https://ctan.org/pkg/litesolution}{CTAN} and save it under your working directory. However, I strongly suggest to use terminal to install and update all packages to the latest version

\begin{verbatim}
    sudo tlmgr update --self --all
\end{verbatim}

To learn more, please refer to \href{https://tex.stackexchange.com/questions/55437/how-do-i-update-my-tex-distribution}{How do I update my \hologo{TeX} distribution?}

\subsection{Compatibility}

The test environments are macOS + Mac\hologo{TeX} 2024 / Overleaf / Ubuntu 22.04.2 + \hologo{TeX} Live 2024 and they all work fine for \hologo{pdfLaTeX} and \hologo{XeLaTeX} compilers. Windows and Unix platforms compatibility unknown.

\section{Global Options of this Class}

\begin{verbatim}
    \documentclass[<options>]{litesolution}
\end{verbatim}

\subsection{The \mode{answer} option}

The \mode{hideanswer} mode can hide contents in \cmd{solution} environment and \cmd{ans} command.

\subsection{The \mode{math} option}

The \mode{mtpro2}, \mode{newtx} and \mode{newtxsf} modes can format the font of formulas in the document. Please check if mtpro2 font has been installed on your computer correctly before using \mode{mtpro2} mode.

\section{Related Packages}
\begin{description}
    \item[Package \pkg{notebeamer}] provides macros for inputting slides on note papers quickly.
    \item[Package \pkg{fadingimage}] provides macros for inputting full width picture at the edges of pages quickly.
\end{description}

\chapter{Settings \& Usages of this Class}

\section{Cover Configurations}

\subsection{The cover page configurations}

\begin{verbatim}
    \title{<content>}                 \subtitle{<content>}
    \bioinfo{<content>}               \cover[<pattern>]{<image>}
    \coverhead[<angle>]{<image>}      \coverhead*[<angle>]{<content>}

    \begin{document}                  \maketitle[<color>]
\end{verbatim}

\begin{verbatim}
    \title{\sffamily The \pkg{LiteSolution} Class}
    \subtitle{\sffamily\scshape Hangzhou Dianzi University}
    \bioinfo{Mingyu Hsia (\mailto{xiamyphys@hdu.edu.cn})
            \quad|\quad\today\quad|\quad Version 2.2b}
    \cover[checkerboard]{schrodinger} \coverhead[5]{universe}

    \begin{document}                  \maketitle[Midnightblue]
\end{verbatim}

\subsection{The chapter head configurations}

\begin{verbatim}
    \chapterimage {<insert image macro>}
\end{verbatim}

This command can assign the format of the image at every chapters begin and you can adjust the format of the image with the \pkg{fadingimage} package.

\section{Preset Packages}

This template has preset many packages. The following packages are the common ones

\begin{table}[htbp]
    \centering\small
    \begin{tabular}{l l l l l l l l}
        \toprule
        \pkg{amsthm}      & \pkg{amssymb}    & \pkg{bm}         & \pkg{booktabs} &
        \pkg{cancel}      & \pkg{caption}    & \pkg{circuitikz} & \pkg{datetime} \\
        \midrule
        \pkg{derivative}  & \pkg{diagbox}    & \pkg{esvect}     & \pkg{extarrows} &
        \pkg{fadingimage} & \pkg{fancyhdr}   & \pkg{fixdif}     & \pkg{fontawesome5} \\
        \midrule
        \pkg{geometry}    & \pkg{graphics}   & \pkg{graphicx}   & \pkg{hyperref} &
        \pkg{indentfirst} & \pkg{lipsum}     & \pkg{mathtools}  & \pkg{multicol} \\
        \midrule
        \pkg{multirow}    & \pkg{nicematrix} & \pkg{notebeamer} & \pkg{paracol} &
        \pkg{pgfplots}    & \pkg{physics2}   & \pkg{qrcode}     & \pkg{refstyle} \\
        \midrule
        \pkg{setspace}    & \pkg{siunitx}    & \pkg{tabularx}   & \pkg{tasks} &
        \pkg{wallpaper}   & \pkg{xcolor}     & \pkg{xeCJK}      & \pkg{xfrac} \\
        \bottomrule
    \end{tabular}
\end{table}

\section{Preset Commands}

\subsection{The \cmd{ans} command}

\begin{verbatim}
    \ans {<contents>}
\end{verbatim}
 
This command can underline the answer, and if mode \mode{noans} is enabled the answer will be hidden.

\subsection{The \cmd{solute} command}

\begin{verbatim}
    \solute {<number>}              \solute* {<contents>}
\end{verbatim}

This command can create a fixable answer box when the mode \mode{noans} is enabled.

\subsection{Other preset commands}

\begin{verbatim}
    \def\i{\mathrm i}       \def\e{\mathrm e}       \def\T{\mathsf T}
    \let\leq\leqslant       \let\geq\geqslant       \let\vec\vv
\end{verbatim}

\section{Preset \pkg{amsthm} Environments}

\subsection{The \cmd{problem} environment}

\begin{tcblisting}{sidebyside,colback=DarkGreen!5,colframe=DarkGreen!80}
\begin{problem}[<Keywords>]\leavevmode
\begin{tasks}(2)
  \task Choice A  \task[\true] Choice B
  \task Choice C  \task Choice D
\end{tasks}
\end{problem}
\end{tcblisting}

\subsection{The \cmd{solution} and \cmd{note} environment}

\begin{minipage}{.48\textwidth}
\begin{tcblisting}{sidebyside,colback=MidnightBlue!5,colframe=MidnightBlue!80}
\begin{solution}
  B is correct.
\end{solution}
\end{tcblisting}
\end{minipage}
\hfill
\begin{minipage}{.48\textwidth}
\begin{tcblisting}{sidebyside,colback=DarkRed!5,colframe=DarkRed!80}
\begin{note}
  We note that.
\end{note}
\end{tcblisting}    
\end{minipage}

\section{Equation test}

\[\begin{cases}
    \i\hbar\partial_t\psi(\mathbf x,t)=\ab(-\frac{\hbar^2}{2m}\bm\nabla^2+V)\\
    \i\hbar\partial_t\psi(\mathbf x,t)=-(\i\hbar c\bm\alpha\cdot\bm\nabla+\beta mc^2)\psi(\mathbf x,t)
\end{cases}\]

\section*{Original Code for the Cover Head}

\setstretch{1.15}
\lstinputlisting{figure/universe.tex}

\end{document}