% beamerthemeXiaoshan.sty v1.2 2024/10/19
% by LianTze Lim (liantze@gmail.com)
\ProvidesPackage{beamerthemeXiaoshan}

\usetheme[progressbar=frametitle]{metropolis}
%v 1.1: fix space after block titles
\patchcmd{\metropolis@block}{\nointerlineskip}{}{}{}
\RequirePackage{pgfornament-han}
\RequirePackage{tikz}
\usetikzlibrary{decorations,decorations.markings}
\RequirePackage{cncolours}
\RequirePackage{needspace}

\setbeamertemplate{frametitle continuation}[from second]

\renewcommand{\metropolis@colors@dark}{
  \setbeamercolor{normal text}{%
    fg=black!2,
    bg=漆黑
  }
  \usebeamercolor[fg]{normal text}
}
\renewcommand{\metropolis@colors@light}{
  \setbeamercolor{normal text}{%
    fg=漆黑,
    bg=black!2
  }
  \usebeamercolor[fg]{normal text}
}

\metroset{background=light}

\setbeamercolor{alerted text}{fg=酡红}
\setbeamercolor{example text}{fg=靛蓝}

\AtBeginEnvironment{theorem}{%
  \setbeamercolor{block title}{fg=松花绿}
}

\AtBeginEnvironment{proof}{%
  \setbeamercolor{block title}{fg=松花绿}
}

\setbeamercolor{qed symbol}{fg=松花绿}

\setbeamertemplate{title}{
\raggedleft%
\linespread{1.0}%
\inserttitle%
\hspace*{2em}\par%
}
% Frankly I have no idea if this is the right way to shove in a framesubtitle for metropolis
\apptocmd{\metropolis@frametitlestrut@end}{\ifx\insertframesubtitle\@empty\else\par\usebeamerfont{framesubtitle}\insertframesubtitle\par\vskip1.5ex\fi}{}{}

\setbeamertemplate{subtitle}{
\raggedleft%
\insertsubtitle%
\hspace*{2em}\par%
\vspace*{0.5em}
}
\addtobeamertemplate{author}{\raggedleft}{}
\addtobeamertemplate{date}{\raggedleft}{}

\setbeamertemplate{progress bar in head/foot}{
  \nointerlineskip
  \setlength{\metropolis@progressinheadfoot}{%
    \paperwidth * \ratio{\insertframenumber pt}{\inserttotalframenumber pt}%
  }%
  \begin{beamercolorbox}[wd=\paperwidth]{progress bar in head/foot}
    \begin{tikzpicture}%
      \newbox{\orn}
      \savebox{\orn}{\pgfornamenthan[width=1em]{39}}
      \fill[bg!60] (0,0) rectangle (\paperwidth, .55em);
       \clip (0,0) rectangle (\metropolis@progressinheadfoot, .55em);
       \begin{scope}[decoration={markings, mark=between positions 0 and 1 step 1em
  with { \node[transform shape,inner sep=0pt,outer sep=0pt,draw=none]{\usebox{\orn}}; }} ]
       \path [postaction={decorate}] (.5em,.275em) -- (\dimexpr\metropolis@progressinheadfoot+0.5em, .275em);
     \end{scope}%
    \end{tikzpicture}%
  \end{beamercolorbox}
}

\setbeamertemplate{progress bar in section page}{
  \setlength{\metropolis@progressonsectionpage}{%
    \textwidth * \ratio{\insertframenumber pt}{\inserttotalframenumber pt}%
  }%
  \begin{tikzpicture}
    \newbox{\orn}
    \savebox{\orn}{\pgfornamenthan[width=.8em]{39}}
    \fill[bg!60] (0,0) rectangle (\textwidth, .44em);
     \clip (0,0) rectangle (\metropolis@progressonsectionpage, .44em);
     \begin{scope}[decoration={markings, mark=between positions 0 and 1 step .8em
with { \node[transform shape,inner sep=0pt,outer sep=0pt,draw=none]{\usebox{\orn}}; }} ]
     \path [postaction={decorate}] (.4em,.22em) -- (\dimexpr\metropolis@progressonsectionpage+0.5em, .22em);
   \end{scope}%
  \end{tikzpicture}%
}

\setbeamertemplate{title separator}{%
  \vspace*{-5em}%
  \begin{tikzpicture}
    \newbox{\orn}
    \savebox{\orn}{\pgfornamenthan[width=2em]{31}}
    \node[anchor=south east,inner sep=0pt,outer sep=0pt] (endmotif) at (\textwidth,0){\pgfornamenthan[width=2em,symmetry=c]{13}};
    % \node[rotate=90,anchor=south west,inner sep=0pt,outer sep=0pt] at (endmotif.north east) {\pgfornamenthan[width=2em]{31}};
    \begin{scope}[decoration={markings, mark=between positions 0 and 1 step 2em
      with { \node[transform shape,inner sep=0pt,outer sep=0pt,anchor=south]{\usebox{\orn}}; }} ]
    \path [postaction={decorate}] ([yshift=1em]endmotif.north east) -- ++(0,2em);
    \clip (0,1em) rectangle ([yshift=-2pt]endmotif.south west);
    \path [postaction={decorate}] (1em, 0) -- (\textwidth,0);
    \end{scope}%
  \end{tikzpicture}%
\par
}

\@ifpackageloaded{ctex}{%
  \renewcommand{\metropolis@strut}{%
    \vphantom{ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz()\rule[-6pt]{1em}{0pt}}%
  }
}{}

\@ifpackageloaded{CJK}{%
  \renewcommand{\metropolis@strut}{%
    \vphantom{ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz()\rule[-6pt]{1em}{0pt}}%
  }
}{}


\addtobeamertemplate{block begin}{%
  \needspace{3em}%
  \begin{tikzpicture}[overlay]
    \tikzset{every node/.style={inner sep=0pt,outer sep=0pt,draw=none,松花绿!60}}
    \node[anchor=north]{\pgfornamenthan[width=1.8em]{9}};%
    \node[anchor=north west,xscale=0.5] at (0.9em,0) {\pgfornamenthan[width=1.8em]{29}};%
    \node[anchor=south west,yscale=0.5,rotate=-90] at (-0.9em,-1.8em) {\pgfornamenthan[width=1.8em]{29}};%
  \end{tikzpicture}\vskip-3pt%
 }{}

\addtobeamertemplate{block alerted begin}{%
  \needspace{3em}%
  \begin{tikzpicture}[overlay]
    \tikzset{every node/.style={inner sep=0pt,outer sep=0pt,draw=none, alerted text.fg!60}}
    \node[anchor=north]{\pgfornamenthan[width=1.8em]{9}};%
    \node[anchor=north west,xscale=0.5] at (0.9em,0) {\pgfornamenthan[width=1.8em]{29}};%
    \node[anchor=south west,yscale=0.5,rotate=-90] at (-0.9em,-1.8em) {\pgfornamenthan[width=1.8em]{29}};%
  \end{tikzpicture}\vskip-3pt%
}{}

\addtobeamertemplate{block example begin}{%
  \needspace{3em}%
  \begin{tikzpicture}[overlay]
    \tikzset{every node/.style={inner sep=0pt,outer sep=0pt,draw=none, example text.fg!60}}
    \node[anchor=north]{\pgfornamenthan[width=1.8em]{9}};%
    \node[anchor=north west,xscale=0.5] at (0.9em,0) {\pgfornamenthan[width=1.8em]{29}};%
    \node[anchor=south west,yscale=0.5,rotate=-90] at (-0.9em,-1.8em) {\pgfornamenthan[width=1.8em]{29}};%
  \end{tikzpicture}\vskip-3pt%
}{}

\endinput