%!TEX program = xelatex

%% 版本：1.0
%% 2022-05-07
%% 作者：杨永全
%%本文件的主要目的，是为了定义幻灯片主题

\RequirePackage{booktabs}
\RequirePackage[T1]{fontenc}
\RequirePackage{fontspec}
\RequirePackage{hyperref}
\RequirePackage[utf8x]{inputenc}
\RequirePackage{listings}
\RequirePackage{tikz}

\usetikzlibrary{
    calc,
    turtle,
    positioning
}
%应用额外的主题文件
\usefonttheme{OUCSlide}
\usecolortheme{OUCSlide}
\useinnertheme{OUCSlide}
\useoutertheme{OUCSlide}

\pgfkeys{/beameroucslide/.cd, 
    .search also={
        /beameroucslide/inner,
        /beameroucslide/outer,
        /beameroucslide/color,
        /beameroucslide/font,
    },
    title=regular,
    subtitle=regular,
    part=regular,
    frametitle=regular,
}
%设置元素编号
\setbeamertemplate{caption}[numbered]

%设置footnote在tcolorbox外面
\makeatletter
% restore footnote internals to those in normal page, not minipage
\def\tcb@restore@footnote{%
  \def\@mpfn{footnote}%
  \def\thempfn{\arabic{footnote}}%
  \let\@footnotetext\tcb@footnote@collect
}

% collect footnote text
\long\def\tcb@footnote@collect#1{%
  % expand \@thefnmark before appending before app to \tcb@footnote@acc
  \expandafter\gappto\expandafter\tcb@footnote@acc\expandafter{%
    \expandafter\footnotetext\expandafter[\@thefnmark]{#1}%
  }%
}

\def\tcb@footnote@use{%
  \tcb@footnote@acc
  \global\let\tcb@footnote@acc\@empty
}
\global\let\tcb@footnote@acc\@empty


\tcbset{
  % restore for every box
  every box/.style={
    before upper pre=\tcb@restore@footnote
  },
  % use for layer 1 boxes only
  every box on layer 1/.append style={
    after app=\tcb@footnote@use
  }
}
\makeatother
%设置footnote在tcolorbox外面结束