beamerouterthemescu.sty

% This is file `beamerouterthemescu.sty'.
% Copyright (C) 2021-2024 by Linrong Wu.
% Version: 2024/10/31 v1.3e (Original Version: 2024/04/16 v1.3c).
%
% This file may be distributed and/or modified
%
% 1. under the LaTeX Project Public License and/or
% 2. under the GNU Public License.
%
% See the file doc/licenses/LICENSE for more details.
%
% 本文件为 SCU_Beamer_Slide-demo 外部主题宏包文件.
% !请勿轻易改动此文档中代码.
%%%% ----------------------------------------------------------------
\NeedsTeXFormat{LaTeX2e}[1995/12/01]
\ProvidesPackage{beamerouterthemescu}[2024/10/31 v1.3e, SCU Beamer Theme(Outer Theme)]
%%%% ----------------------------------------------------------------


% ----------------
% Declare of Options
% Confirmed in v1.3e(2024/10/31).
% Established in v1.3c(2024/04/16), v1.3e(2024/10/31).
% ----------------
% CMD:: \DeclareOptionBeamer  - 声明参数.
% CMD:: \ExecuteOptionsBeamer - 预执行参数.
% CMD:: \ProcessOptionsBeamer - 处理参数.
% ----------------
% KEY:: Miniframes.
% VALUE:: follow | separate | negate.
\DeclareOptionBeamer{Miniframes}{\def\beamer@scu@Miniframes{#1}}
% KEY:: NavigationTool.
% VALUE:: negate | 1 | 2 | 3 | 1-2 | 1-3 | 2-3 | 1-2-3.
\DeclareOptionBeamer{NavigationTool}{\def\beamer@scu@NavigationTool{#1}}

\ExecuteOptionsBeamer{%
  Miniframes=follow,%
  NavigationTool=1-2-3%
}
\ProcessOptionsBeamer
% ----------------


% ----------------
% Declare of Packages
% Confirmed in v1.3d(2024/05/18).
% Established in v1.3c(2024/04/16).
% Updated in v1.3d(2024/05/18).
% ----------------
% CMD:: \usetikzlibrary - 调用 TikZ 库.
% ----------------
% \usetikzlibrary{positioning, calc}
\usetikzlibrary{calc}
% ----------------


\mode<presentation>


% ----------------
% Beamer Theme Headline Layout
% Confirmed in v1.3e(2024/10/31).
% Established in v1.0a(2021/12/03).
% Updated in v1.2a(2022/03/10), v1.3a(2022/03/16), v1.3b(2022/04/13), v1.3c(2024/04/16), v1.3d(2024/05/18), v1.3e(2024/10/31).
% ----------------
% 于 v1.3c(2024/04/16) 与 Headline TikZ 绘图部分合并, 强化代码关联度.
% 于 v1.3e(2024/10/31) 修改 beamerthemescu.sty 中 Miniframe Layout 并合并于此.
% ----------------
% CMD:: \newdimen   - 创建长度寄存器.
% CMD:: \newsavebox - 创建盒子.
% ----------------
% FORMAT:: section [cn - ALL; en - CURRENT] | subsection (with mini-frames).
% ----------------
% DIMEN:: 节导航栏宽度 - secbar.
\newdimen\beamer@scu@len@secbar
\if\EqualOptionsBeamer{LanguageMode}{cn}%
  \beamer@scu@len@secbar=0.64\paperwidth%
\else\if\EqualOptionsBeamer{LanguageMode}{en}%
  \beamer@scu@len@secbar=0.52\paperwidth%
\fi\fi
% DIMEN:: 小节与标题间分隔线 - sectotitleline.
\newdimen\beamer@scu@len@sectotitleline
\beamer@scu@len@sectotitleline=\dimexpr\the\paperwidth-\beamer@scu@len@secbar-20pt\relax

% savebox 存储 TikZ Headline 背景底图绘图.
\newsavebox{\beamer@scu@headlinebox}
\sbox{\beamer@scu@headlinebox}{%
  \begin{tikzpicture}%
    % 绘图辅助节点定义.
    \coordinate (LineNorthWest) at (0, -11pt);% 小节-标题分隔线 西北节点
    \coordinate (LineSouthWest) at (0, -13pt);% 小节-标题分隔线 西南节点
    \coordinate (LineSouthEast) at (\beamer@scu@len@sectotitleline, -13pt);% 小节-标题分隔线 东北节点
    \coordinate (SecbarNorthEast) at (\the\paperwidth, 0);% 章节栏 东北节点
    \coordinate (SecbarSouthEast) at (\the\paperwidth, -13pt);% 章节栏 东南节点
    \coordinate (SecbarSouthWest) at ([xshift=-\beamer@scu@len@secbar]SecbarSouthEast);% 章节栏 西南节点
    \coordinate (SecbarNorthWest) at ([xshift=-6.5pt, yshift=13pt]SecbarSouthWest);% 章节栏 西南节点
    \coordinate (AdornDarkNorthWest) at ([xshift=-4pt]SecbarNorthWest);% 深色装饰 西北节点
    \coordinate (AdornDarkSouthEast) at ([xshift=3.5pt, yshift=-7pt]SecbarNorthWest);% 深色装饰 东南节点
    \coordinate (AdornLightNorthWest) at ([xshift=-4pt]AdornDarkSouthEast);%  浅色装饰 西北节点
    \coordinate (AdornLightSouthEast) at ([xshift=2pt, yshift=-4pt]AdornDarkSouthEast);% 浅色装饰 东南节点
    % 颜色图形绘制.
    \fill[PrimaryC] (SecbarNorthEast) -- (SecbarSouthEast)%
      -- (SecbarSouthWest) -- (SecbarNorthWest) -- cycle;% 章节栏背景
    \fill[IntersperseC] (AdornDarkNorthWest) -- (SecbarNorthWest)%
      -- (AdornDarkSouthEast) -- ++ (-4pt, 0) -- cycle;% 深色装饰
    \fill[AuxiliaryC] (AdornLightNorthWest) -- (AdornDarkSouthEast)%
      -- (AdornLightSouthEast) -- ++ (-4pt, 0) -- cycle;% 浅色装饰
    \fill[PrimaryC] (LineNorthWest) -- (LineSouthWest)%
      -- (LineSouthEast) -- ++ (-1pt, 2pt) -- cycle;% 小节与标题间分隔线
  \end{tikzpicture}%
}%

% 插入章节栏水平导航.
\def\insert@secbar#1{%
  % #1:: en LanguageMode 下尾部距离.
  \usebeamerfont{section in head/foot}%
  \usebeamercolor[fg]{section in head/foot}%
  \if\EqualOptionsBeamer{LanguageMode}{cn}%
    \insertsectionnavigationhorizontal{\beamer@scu@len@secbar}{}{}%
  \else\if\EqualOptionsBeamer{LanguageMode}{en}%
    \insertsectionhead\hspace*{#1}%
  \fi\fi%
}

% 插入小节标题.
\def\insert@subsec{%
  \usebeamerfont{subsection in head/foot}%
  \usebeamercolor[fg]{subsection in head/foot}%
  \insertsubsectionhead%
}

% 插入小节迷你帧 [采用 \slideentry 方式生成].
%% 参考::
%% Beamer Class beamerbasenavigation.sty - definition of \slideentry
%% https://tex.stackexchange.com/questions/170122/simple-mini-frames-under-frame-title-beamer
%% https://tex.stackexchange.com/questions/23151/beamer-infolines-outer-theme-with-miniframe-bullets-only-for-the-current-section
%% https://tex.stackexchange.com/questions/308343/how-to-create-mini-sections-mini-subsections-and-mini-frames-in-beamer-presenta
\def\insert@subsecminiframes#1#2{%
  % #1:: baselineskip.
  % #2:: mini-frames space.
  \setlength{\baselineskip}{#1}% 调整 baselineskip 以减小行间距
  % \usebeamerfont{subsection in head/foot}% 注释 与上行冲突
  \usebeamercolor[fg]{subsection in head/foot}%
  \def\sectionentry##1##2##3##4##5{}%
  \def\slideentry##1##2##3##4##5##6{%
    %section number, subsection number, slide number, first/last frame, last subsection, part number
    \ifnum##6=\c@part\ifnum##1=\c@section\ifnum##2>0\ifnum##3>0%
      \beamer@link(##4){%
        \usebeamerfont{mini frames}%
        \ifnum\c@subsection=##2%
          \usebeamercolor{mini frame}%
          \ifnum\c@subsectionslide<##3%
            \usebeamertemplate{mini frame in current subsection}%
            \hskip#2%\beamer@minisliderowhilight%
          \else%
            \usebeamertemplate{mini frame}%
            \hskip#2%\beamer@minislidehilight%
          \fi%
        \fi}%
        \hskip0pt% 避免换行导致超链接中断
    \fi\fi\fi\else%
      \fakeslideentry{##1}{##2}{##3}{##4}{##5}{##6}%
    \fi%
    \ignorespaces%
  }%
  \setbox\beamer@sectionbox=\hbox{}%
  \hskip0pt\dohead%
  \box\beamer@sectionbox%
}
% 插入小节帧进度 [已废除 v1.3e(2024/10/31), 此处做整合存档].
%% 参考::
%% https://tex.stackexchange.com/questions/314847/beamer-theme-antibes-plus-navigation-bar-with-circles-for-subsections
% % 计数器 - 小节起始页.
% \newcount\beamer@subsectionstartframe%
% \beamer@subsectionstartframe=2%
% % 使用 etoolbox 宏包修改 `beamerbasesection.sty' 中 \beamer@subsection 命令.
% \apptocmd{\beamer@subsection}{%
%   \addtocontents{nav}{\protect\headcommand{%
%     \protect\beamer@subsectionframes{%
%       \the\beamer@subsectionstartframe%
%     }{\the\c@framenumber}%
%   }}%
% }{}{}%
% \apptocmd{\beamer@subsection}{%
%   \beamer@subsectionstartframe=\c@framenumber\relax%
% }{}{}%
% document 结束时设置 \headcommand 写入项. (\noexpand 表示不展开命令)
% \AtEndDocument{%
%   \immediate\write\@auxout{\string\@writefile{nav}{%
%     \noexpand\headcommand{%
%       \noexpand\beamer@subsectionframes{%
%         \the\beamer@subsectionstartframe%
%       }{\the\c@framenumber}}%
%   }}%
% }{}{}%
% % 定义小节结束页命令. (实际此处设置为后续小节起始帧, document 结束时设置为结束帧)
% \def\beamer@subsectionendframe{2}
% \def\beamer@subsectionframes#1#2{%
%   \ifnum\c@framenumber<#1%
%   \else%
%     \ifnum\c@framenumber>#2%
%     \else%
%       \gdef\beamer@subsectionendframe{#2}%
%     \fi%
%   \fi%
% }% ------
% % 按照 beamer 方式储存命令.
% \newcommand\insertsubsectionendframe{\beamer@subsectionendframe}%
% % 计数器 - 小节中当前幻灯帧数.
% \newcounter{subsectioncurrentframe}%
% % 计数器 - 小节中总幻灯帧数.
% \newcounter{subsectiontotalframes}%
% % 长度 - 迷你帧间距.
% \newlength{\beamer@scu@miniframesspace}% ------
% \def\insertsubsectionminiframes#1#2#3{%
%   % #1:: 迷你帧间距 - 小节幻灯帧数不大于10.
%   % #2:: 迷你帧间距 - 小节幻灯帧数大于10且不大于15.
%   % #3:: 迷你帧间距 - 小节幻灯帧数大于15.
%   % 小节当前幻灯帧数设置.
%   \setcounter{subsectioncurrentframe}{\insertframenumber}%
%   \addtocounter{subsectioncurrentframe}{1}%
%   \addtocounter{subsectioncurrentframe}{-\beamer@subsectionstartpage}%
%   % 小节总幻灯帧数设置.
%   \setcounter{subsectiontotalframes}{\insertsubsectionendframe}%
%   \addtocounter{subsectiontotalframes}{0}%
%   \addtocounter{subsectiontotalframes}{-\beamer@subsectionstartpage}%
%   % 迷你帧间距设置.
%   \ifnum\c@subsectiontotalframes>15%
%     \setlength{\beamer@scu@miniframesspace}{#3}%
%   \else\ifnum\c@subsectiontotalframes>10%
%     \setlength{\beamer@scu@miniframesspace}{#2}%
%   \else%
%     \setlength{\beamer@scu@miniframesspace}{#1}%
%   \fi\fi%
%   % foreach 循环控制 mini-frames 输出.
%   \ifnum\c@subsectiontotalframes>1%
%     \foreach \i in {1,...,\c@subsectiontotalframes}{%
%       \usebeamercolor{mini frame}%
%       % 帧数小于当前帧, 则输出实心圆, 否则输出空心圆.
%       \ifnum\i<\numexpr\c@subsectioncurrentframe+1%
%         \usebeamertemplate{mini frame}%
%       \else%
%         \usebeamertemplate{mini frame in current section}%
%       \fi%
%       \ifnum\i<\c@subsectiontotalframes%
%         \hskip\beamer@scu@miniframesspace%
%       \fi%
%       % \ifnum\i=\the\numexpr(\c@subsectiontotalframes+1)/2\relax%
%         % \\[-3pt]%
%       % \fi%
%     }%
%   \fi%
% }% ------
% \def\insert@miniframes{%
%   \setlength{\baselineskip}{3.8pt}%
%   % \usebeamerfont{subsection in head/foot}%
%   \usebeamercolor[fg]{subsection in head/foot}%
%   \insertsubsecminiframes{1.8pt}{1.5pt}{1.2pt}%
% }

% 页眉样式定义.
\def\beamer@scu@headline{%
  \begin{tikzpicture}[overlay, remember picture]%
    % 绘图辅助节点定义.
    \coordinate (NorthEast) at (current page.north east);% 东北节点
    \coordinate (NorthWest) at (current page.north west);% 西北节点
    % 图形文字绘制.
    \node[anchor=north west, inner sep=0pt, outer sep=0pt] at (NorthWest) {%
      \usebox{\beamer@scu@headlinebox}};% 绘制 headline 背景底图
    \node[left, inner sep=0pt, outer sep=0pt,%
      yshift=-7pt] at (NorthEast) {\insert@secbar{9pt}};% 绘制章节栏水平导航
    \node[right, inner sep=0pt, outer sep=0pt,%
      xshift=9pt, yshift=-5.75pt] at (NorthWest) (Subsec) {\insert@subsec};% 绘制小节标题
    \if\EqualOptionsBeamer{Miniframes}{follow}%
      \path let \p{subsec} = (Subsec.east)%
        in node[right, inner sep=0pt, outer sep=0pt,%
          xshift=6pt, yshift=-.5pt] at (\p{subsec}) {\parbox{%
          \dimexpr\beamer@scu@len@sectotitleline-\x{subsec}+4pt\relax}{\raggedright\insert@subsecminiframes{3.8pt}{1.6pt}}};% 绘制小节迷你帧
      % \node[right=6pt of Subsec, inner sep=0pt, outer sep=0pt] {\insert@miniframes};% 绘制小节帧进度
    \else\if\EqualOptionsBeamer{Miniframes}{separate}%
      \node[anchor=north east, inner sep=0pt, outer sep=0pt,%
        xshift=-7.2pt, yshift=-15pt] at (NorthEast) {%
        \insert@subsecminiframes{3.8pt}{1.6pt}};% 绘制小节迷你帧
    \else\if\EqualOptionsBeamer{Miniframes}{negate}%
      \relax%
    \fi\fi\fi%
  \end{tikzpicture}%
}

% 设置 Headline 主题模板.
\defbeamertemplate*{headline}{SCU headline theme}{%
  \begin{beamercolorbox}[wd=\paperwidth,ht=11.5pt]{}%
    \beamer@scu@headline%
  \end{beamercolorbox}%
}
\setbeamertemplate{headline}[SCU headline theme]
% ----------------


% ----------------
% Beamer Theme Frametitle Layout
% Confirmed in v1.3c(2024/04/16).
% Established in v1.0a(2021/12/03).
% Updated in v1.2a(2022/03/10), v1.3b(2022/04/13), v1.3c(2024/04/16).
% ----------------
% FORMAT:: frametitle | framesubtitle.
% ----------------
% 设置 Frametitle 主题模板.
\defbeamertemplate*{frametitle}{SCU frametitle theme}{%
  \ifx\insertframesubtitle\@empty%
    \begin{beamercolorbox}[wd=\paperwidth,%
      ht=2.5ex, dp=.5ex, leftskip=8.6pt]{}%{frametitle}
      \usebeamerfont{frametitle}%
      \usebeamercolor[fg]{frametitle}%
      \insertframetitle%
    \end{beamercolorbox}%
  \else%
    \begin{beamercolorbox}[wd=\paperwidth,%
      ht=2.5ex, dp=.5ex, leftskip=8.6pt]{}%{frametitle}
      \usebeamerfont{frametitle}%
      \usebeamercolor[fg]{frametitle}%
      \insertframetitle~%
      \textcolor{SecondaryAuxiliaryC}{\rule[-.2ex]{.08em}{1.8ex}}~%
      \usebeamerfont{framesubtitle}%
      \usebeamercolor[fg]{framesubtitle}%
      \insertframesubtitle%
    \end{beamercolorbox}%
  \fi%
}
\setbeamertemplate{frametitle}[SCU frametitle theme]
% ----------------


% ----------------
% Beamer Theme Footline Layout
% Confirmed in v1.3e(2024/10/31).
% Established in v1.0a(2021/12/03).
% Updated in v1.2a(2022/03/10), v1.3a(2022/03/16), v1.3b(2022/04/13), v1.3c(2024/04/16), v1.3e(2024/10/31).
% ----------------
% 于 v1.3c(2024/04/16) 与 Footline TikZ 绘图部分合并, 强化代码关联度
% ----------------
% CMD:: \newdimen   - 创建长度寄存器.
% CMD:: \newcount   - 创建计数器.
% CMD:: \newsavebox - 创建盒子.
% ----------------
% FORMAT:: NAME of SCU | author | short title | navigation tool | framenumber.
% ----------------
% DIMEN:: Acrobat 页面跳转按钮宽度 - GoToPage.
\newdimen\beamer@scu@len@GoToPage
% DIMEN:: ProgressBar Width - probarwd.
\newdimen\beamer@scu@len@probarwd
\beamer@scu@len@probarwd=\dimexpr\the\paperwidth-48pt\relax
% DIMEN:: ProgressBar auxiliary dimension - probartmpdim.
\newdimen\beamer@scu@len@probartmpdim

% COUNT:: 当前帧页码(正文/附录) - currentframe.
\newcount\beamer@scu@count@currentframe
% COUNT:: 当前总页码(正文/附录) - totalframe.
\newcount\beamer@scu@count@totalframe

% savebox 存储 TikZ Footline 背景底图绘图.
\newsavebox{\beamer@scu@footlinebox}
\sbox{\beamer@scu@footlinebox}{%
  \begin{tikzpicture}%
    % 绘图辅助节点定义.
    \coordinate (LogoNorthWest) at (0, 12pt);% Logo 西北节点
    \coordinate (LogoNorthEast) at (48pt, 12pt);% Logo 东北节点
    \coordinate (LogoSouthEast) at (54pt, 0);% Logo 东南节点
    \coordinate (AdornLightSouthEast) at (58pt, 0);% 浅色装饰 东南节点
    \coordinate (AdornLightNorthEast) at (55.5pt, 5pt);% 浅色装饰 东北节点
    \coordinate (AdornLightNorthWest) at (51.5pt, 5pt);% 浅色装饰 西北节点
    \coordinate (AdornDarkNorthEast) at (53.5pt, 9pt);% 深色装饰 东北节点
    \coordinate (AdornDarkNorthWest) at (49.5pt, 9pt);% 深色装饰 西北节点
    % 颜色图形绘制.
    \fill[PrimaryC] (0, 0) -- (LogoNorthWest)%
      -- (LogoNorthEast) -- (LogoSouthEast) -- cycle;% Logo 背景
    \node[inner sep=0pt, outer sep=0pt] at (25pt, 6pt) {\pgfuseimage{lg}};
    \fill[AuxiliaryC] (LogoSouthEast) -- (AdornLightNorthWest)%
      -- (AdornLightNorthEast) -- (AdornLightSouthEast) -- cycle;% 浅色装饰
    \fill[IntersperseC] (AdornLightNorthWest) -- (AdornDarkNorthWest)%
      -- (AdornDarkNorthEast) -- (AdornLightNorthEast) -- cycle;% 深色装饰
  \end{tikzpicture}%
}%

% 设置帧页码计数器(正文/附录).
\def\beamer@scu@framenumber{%
  \ifbeamer@inappendix% 附录帧取附录帧页码
    \beamer@scu@count@currentframe=\insertframenumberinappendix%
    \beamer@scu@count@totalframe=\insertappendixframenumber%
  \else% 正文帧取除开附录帧页码
    \beamer@scu@count@currentframe=\insertframenumber%
    \beamer@scu@count@totalframe=\insertmainframenumber%
  \fi%
}

% 插入帧页码.
\def\insert@framenumber{% 页码显示为"x / total"
  \usebeamerfont{framenumber in head/foot}%
  \usebeamercolor[fg]{framenumber in head/foot}%
  \usebeamertemplate*{page number in head/foot}%
}

% 插入带有 Acrobat 页面跳转按钮的页码.
\def\insert@framenumberwithbutton{%
  % \raisebox{0pt}[0pt][0pt]{\rlap{xx}xx}%
  \Acrobatmenu{GoToPage}{%
    \usebeamerfont{framenumber in head/foot}%
    \usebeamercolor[fg]{framenumber in head/foot}%
    \the\beamer@scu@count@currentframe}%
  \usebeamerfont{framenumber in head/foot}%
  \textcolor{SecondaryAuxiliaryC}{~\scalebox{1.33}[0.9]{\faCaretRight}\,\the\beamer@scu@count@totalframe}%
}

% Compute Navigation Tool num.
\if\EqualOptionsBeamer{NavigationTool}{negate}%
  \relax%
\else%
  \StrSubstitute{\beamer@scu@NavigationTool}{-}{, }[\NavigationTool@group]
  \StrCount{\NavigationTool@group}{,}[\NavigationTool@len]
\fi%
% 插入 Navigation Tools.
\def\insert@footnavigationtool#1#2{%
  % #1:: 组内工具间距.
  % #2:: 组间工具间距.
  \usebeamercolor[fg]{palette quaternary}%\tiny%
  \foreach \group [count=\c] in \NavigationTool@group {%
    \IfInteger{\group}{%
      \ifnum\group=1%
        % 上一小节 | 当前小节开始 | 下一小节.
        \setfontscu{5}%
        \hyperlinksubsectionendprev{\faCaretLeft}\hskip#1%
        \hyperlinksubsectionstart{\faStream}\hskip#1%
        \hyperlinksubsectionstartnext{\faCaretRight}%
      \else\ifnum\group=2%
        % 初始页 | 查找 | 结尾页.
        \setfontscu{5}%
        \hyperlinkpresentationstart{\faCaretLeft\hskip-.05em\faCaretLeft}\hskip#1%
        \setfontscu{4.5}%
        \Acrobatmenu{Find}{\faSearch}\hskip#1%
        \setfontscu{5}%
        \hyperlinkpresentationend{\faCaretRight\hskip-.05em\faCaretRight}%
      \else\ifnum\group=3%
        % 上一视图 | 全屏 | 下一视图.
        \setfontscu{4.5}%
        \Acrobatmenu{GoBack}{\faReply}\hskip#1%
        \setfontscu{5}%
        \Acrobatmenu{FullScreen}{\faExpand}\hskip#1%
        \setfontscu{4.5}%
        \Acrobatmenu{GoForward}{\reflectbox{\faReply}}%
      \fi\fi\fi%
      \ifnum\c<\numexpr\NavigationTool@len+1\relax%
        \hskip#2%
      \fi%
    }{%
      \PackageError{beamerthemescu}{%
        Improper usage: `\protect\usetheme[...]{scu}' option [NavigationTool=xxx].\MessageBreak%
        `NavigationTool' should be set to `nagate'\MessageBreak%
        or an option composed of numbers 1 to 3 and the symbol `-', such as `2', `1-3', and `1-2-3'%
      }{%
        `NavigationTool' should be set to `nagate' or an option composed of numbers 1 to 3 and the symbol `-', such as `2', `1-3', and `1-2-3'%
      }%
    }%
  }%
}

% 页脚样式定义.
\def\beamer@scu@footline{%
  \begin{tikzpicture}[overlay]%
    % 绘图辅助节点定义.
    \coordinate (SouthWest) at (current page.south west);% 西南节点
    \coordinate (SouthEast) at (current page.south east);% 东南节点
    % \coordinate (SouthWest) at (0, 0);% 西南节点
    % \coordinate (SouthEast) at (0, \paperwidth);% 东南节点
    % 图形文字绘制.
    \node[anchor=south west, inner sep=0pt, outer sep=0pt] at (SouthWest) {\usebox{\beamer@scu@footlinebox}};% 绘制 footline 背景底图
    \node[right, inner sep=0pt, outer sep=0pt,%
      xshift=64pt, yshift=4.5pt] at (SouthWest) {%
      \usebeamerfont{author in head/foot}%
      \usebeamercolor[fg]{author in head/foot}%
      \insertshortauthor\,%
      \usebeamerfont{title in head/foot}%
      \textcolor{SecondaryAuxiliaryC}{·\,}%
      \usebeamercolor[fg]{title in head/foot}%
      \insertshorttitle%
    };% 绘制 Beamer 标题
    \node[left, inner sep=0pt, outer sep=0pt,%
      xshift=-9pt, yshift=4.5pt] at (SouthEast) (FootlinePage) {%
      \insert@framenumberwithbutton};% 绘制带有 Acrobat 页面跳转按钮的页码
    \if\EqualOptionsBeamer{NavigationTool}{negate}%
      \relax%
    \else%
      \node[left, inner sep=0pt, outer sep=0pt,%
        xshift=-6pt] at (FootlinePage.west) {%
        \insert@footnavigationtool{1.6pt}{4.2pt}};% 绘制 Navigation Tools
    \fi%
  \end{tikzpicture}%
}

% 进度条样式定义.
\def\beamer@scu@progressbar#1#2#3{%
  % #1:: 未放映部分颜色.
  % #2:: 已放映部分颜色.
  % #3:: 辅助色.
  \beamer@scu@len@probartmpdim=\beamer@scu@len@probarwd%
  \divide\beamer@scu@len@probartmpdim by 1000%
  \multiply\beamer@scu@len@probartmpdim by \beamer@scu@count@currentframe%
  \divide\beamer@scu@len@probartmpdim by \beamer@scu@count@totalframe%
  \multiply\beamer@scu@len@probartmpdim by 1000%
  \begin{tikzpicture}[very thin, overlay, remember picture]%
    % 绘图辅助节点定义.
    \coordinate (SouthWest) at (current page.south west);% 西南节点
    \coordinate (ProBar) at ([xshift=48pt, yshift=9pt]SouthWest);% 初始节点
    % 图形绘制.
    \fill[#1] (ProBar) rectangle ++ (\beamer@scu@len@probarwd, 3pt);% 未放映部分
    \fill[#2] ([yshift=9pt]SouthWest) rectangle ++ (48pt, 3pt);
    \fill[#2] (ProBar) rectangle ++ (\beamer@scu@len@probartmpdim, 3pt);% 已放映部分
    \fill[#3, draw=#2, line width=.48pt] ([xshift=\beamer@scu@len@probartmpdim, yshift=1.5pt]ProBar) circle (1.26pt);
  \end{tikzpicture}%
}

% 设置 Page Number 包含附录模式.
% \setbeamertemplate{page number in head/foot}[appendixframenumber]

% 设置 Footline 主题模板.
\defbeamertemplate*{footline}{SCU footline theme}{%
  \begin{beamercolorbox}[wd=\paperwidth,ht=12pt]{}%
    \beamer@scu@framenumber% 优先调用计数器设置
    \beamer@scu@progressbar{AuxiliaryC}{PrimaryC}{BackgroundC}%
    \beamer@scu@footline%
  \end{beamercolorbox}%
}
\setbeamertemplate{footline}[SCU footline theme]
% ----------------


% ----------------
% Beamer Theme Navigation Symbols Layout
% ----------------
%\addtobeamertemplate{footline}{%
%  \leavevmode%
%  \hbox{%
%    \begin{beamercolorbox}[wd=0.4\paperwidth,ht=3ex,dp=.75ex,right,rightskip=1.2em]{frametitle}%
%      \usebeamercolor[fg]{navigation symbols}\insertslidenavigationsymbol%
%      \insertframenavigationsymbol%
%      \insertsubsectionnavigationsymbol%
%      \insertsectionnavigationsymbol%
%      \insertdocnavigationsymbol%
%      \insertbackfindforwardnavigationsymbol%
%    \end{beamercolorbox}%
%  }}
% ----------------


%%%% ----------------------------------------------------------------
\endinput
%%%% ----------------------------------------------------------------
% End of file `beamerouterthemescu.sty'.