% !TEX program = xelatex
% ============================================================
%  chalk-annotate documentation
%  Compile: xelatex chalk-annotate-doc.tex (run twice)
% ============================================================
\documentclass[aspectratio=169, 11pt]{beamer}

\usepackage{ctex}
\usepackage{chalk-annotate}
\usepackage{amsmath, amssymb}
\usepackage{booktabs}

\usetheme{default}
\setbeamertemplate{navigation symbols}{}
\setbeamertemplate{footline}{%
  \hfill\insertframenumber{}/\inserttotalframenumber\hspace{1em}\vspace{0.5em}%
}

\definecolor{accent}{HTML}{C0392B}
\setbeamercolor{frametitle}{fg=black}
\setbeamercolor{itemize item}{fg=accent}
\setbeamerfont{frametitle}{size=\large, series=\bfseries}

\setbeamertemplate{frametitle}{%
  \vspace{0.5em}\insertframetitle\par
  \vspace{-0.2em}{\color{accent}\rule{2cm}{2pt}}\vspace{0.2em}%
}

% ============================================================
\begin{document}

% ---- Title ----
\begin{frame}[c]
  \centering
  {\Large\bfseries chalk-annotate}\par
  \vspace{0.5em}
  {\normalsize Hand-drawn chalk annotations for \LaTeX{} Beamer}\par
  \vspace{1em}
  {\small v1.1 \quad 2026-04-25}\par
  \vspace{0.3em}
  {\small\color{gray} MIT License}
\end{frame}

% ---- Overview ----
\begin{frame}{Overview}
  \textbf{What?}
  Pre-rendered PNG overlays with natural chalk grain and opacity variation.

  \vspace{0.8em}
  \textbf{Why?}
  Far more realistic than pure TikZ decorations.

  \vspace{0.8em}
  \textbf{How?}
  \begin{enumerate}
    \item Install the package
    \item Add \texttt{\textbackslash usepackage\{chalk-annotate\}}
    \item Use annotation commands in your slides
  \end{enumerate}

  \vspace{0.8em}
  \textbf{Result:} \hlellipse{emphasized text} with a hand-drawn feel.
\end{frame}

% ---- Installation ----
\begin{frame}{Installation}
  \textbf{Option 1: TeX Live (recommended)}
  \begin{itemize}
    \item \texttt{tlmgr install chalk-annotate}
    \item Then just use: \texttt{\textbackslash usepackage\{chalk-annotate\}}
  \end{itemize}

  \vspace{0.8em}
  \textbf{Option 2: Overleaf}
  \begin{itemize}
    \item Upload \texttt{chalk-annotate.sty} and the \texttt{assets/} folder
    \item Set compiler to \textbf{XeLaTeX}
  \end{itemize}

  \vspace{0.8em}
  \textbf{Option 3: Local (manual)}
  \begin{itemize}
    \item Download from GitHub: \texttt{github.com/zz19941127/chalk-annotate}
    \item Place \texttt{.sty} + \texttt{assets/} next to your \texttt{.tex} file
    \item Compile with \texttt{xelatex}
  \end{itemize}
\end{frame}

% ---- Commands ----
\begin{frame}{Commands}
  All commands take an optional \texttt{[color]} argument (default: \texttt{red}).

  \vspace{0.8em}
  \renewcommand{\arraystretch}{2.2}
  \begin{tabular}{ll}
    \toprule
    \textbf{Command} & \textbf{Effect} \\
    \midrule
    \texttt{\textbackslash hlellipse\{text\}}
      & \hlellipse{text} \\
    \texttt{\textbackslash hlunderline\{text\}}
      & \hlunderline{text} \\
    \texttt{\textbackslash hlbox\{text\}}
      & \hlbox{text} \\
    \texttt{\textbackslash hlarrowright\{text\}}
      & \hlarrowright{text} \\
    \texttt{\textbackslash hlstrike\{text\}}
      & \hlstrike{text} \\
    \bottomrule
  \end{tabular}
\end{frame}

% ---- Colors ----
\begin{frame}{Available Colors}
  Five colors: \texttt{red} · \texttt{blue} · \texttt{green} · \texttt{orange} · \texttt{purple}

  \vspace{1em}
  \begin{itemize}\setlength{\itemsep}{0.8em}
    \item \hlellipse{Default (red)}
    \item \hlellipse[blue]{Blue}
    \item \hlellipse[green]{Green}
    \item \hlellipse[orange]{Orange}
    \item \hlellipse[purple]{Purple}
  \end{itemize}
\end{frame}

% ---- Box details ----
\begin{frame}{Box Styles}
  \centering
  \vspace{0.5em}
  \texttt{\textbackslash hlbox} uses two layers:
  \textbf{light fill} behind text + \textbf{chalk border} on top.

  \vspace{1em}
  \renewcommand{\arraystretch}{2.5}
  \begin{tabular}{cl}
    \toprule
    \textbf{Color} & \textbf{Result} \\
    \midrule
    \texttt{red}    & \hlbox{Sample text} \\
    \texttt{blue}   & \hlbox[blue]{Sample text} \\
    \texttt{green}  & \hlbox[green]{Sample text} \\
    \texttt{orange} & \hlbox[orange]{Sample text} \\
    \texttt{purple} & \hlbox[purple]{Sample text} \\
    \bottomrule
  \end{tabular}
\end{frame}

% ---- All styles ----
\begin{frame}{All Styles × All Colors}
  \centering
  \small
  \renewcommand{\arraystretch}{2.5}
  \begin{tabular}{lccccc}
    \toprule
    & \textbf{red} & \textbf{blue} & \textbf{green} & \textbf{orange} & \textbf{purple} \\
    \midrule
    Ellipse
      & \hlellipse{abc}
      & \hlellipse[blue]{abc}
      & \hlellipse[green]{abc}
      & \hlellipse[orange]{abc}
      & \hlellipse[purple]{abc} \\
    Underline
      & \hlunderline{abc}
      & \hlunderline[blue]{abc}
      & \hlunderline[green]{abc}
      & \hlunderline[orange]{abc}
      & \hlunderline[purple]{abc} \\
    Box
      & \hlbox{abc}
      & \hlbox[blue]{abc}
      & \hlbox[green]{abc}
      & \hlbox[orange]{abc}
      & \hlbox[purple]{abc} \\
    Strike
      & \hlstrike{abc}
      & \hlstrike[blue]{abc}
      & \hlstrike[green]{abc}
      & \hlstrike[orange]{abc}
      & \hlstrike[purple]{abc} \\
    \bottomrule
  \end{tabular}
\end{frame}

% ---- Academic example ----
\begin{frame}{Academic Usage Example}
  \begin{itemize}\setlength{\itemsep}{0.6em}
    \item Core concept: \hlellipse{comparative advantage}
    \item Traditional theory ignores the endogeneity of
          \hlunderline[blue]{factor endowment structure}
    \item Empirical finding \hlbox[green]{$\beta_1 < 0$}:
          deviating from comparative advantage inhibits growth
    \item Effect more significant for \hlellipse[orange]{middle-income countries}
  \end{itemize}

  \vspace{0.8em}
  Formula annotations:
  \[
    Growth_{it} = \beta_0
      + \hlellipse[blue]{$\beta_1$} \cdot TCI_{it}
      + \beta_2 \cdot X_{it}
      + \mu_i + \lambda_t + \varepsilon_{it}
  \]
\end{frame}

% ---- Customization ----
\begin{frame}{Customization}
  \textbf{Add a new color}
  \begin{enumerate}
    \item Edit \texttt{generate-colors.py} — add your color to \texttt{COLORS} dict
    \item Run: \texttt{python3 generate-colors.py}
    \item Use: \texttt{\textbackslash hlellipse[teal]\{text\}}
  \end{enumerate}

  \vspace{0.8em}
  \textbf{Use your own hand-drawn images}
  \begin{itemize}
    \item Replace any PNG in \texttt{assets/<color>/}
    \item Requirements: RGBA PNG, transparent background
    \item Works with Procreate, Photoshop, or any drawing app
  \end{itemize}

  \vspace{0.8em}
  \textbf{Change asset path}
  \begin{itemize}
    \item \texttt{\textbackslash annsetpath\{images/annotations\}}
    \item Now looks in \texttt{images/annotations/<color>/}
  \end{itemize}
\end{frame}

% ---- Requirements ----
\begin{frame}{Requirements \& License}
  \textbf{Requirements}
  \begin{itemize}
    \item XeLaTeX or LuaLaTeX
    \item Packages auto-loaded: \texttt{tikz}, \texttt{graphicx}, \texttt{calc}
    \item TikZ libraries: \texttt{calc}, \texttt{backgrounds}
  \end{itemize}

  \vspace{1em}
  \textbf{License}
  \begin{itemize}
    \item MIT License — free for personal and commercial use
    \item Source: \texttt{github.com/zz19941127/chalk-annotate}
  \end{itemize}
\end{frame}

\end{document}