rewrite content and modify templates

content.tex

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+%-------------------main body-------------------------%
+\usepackage[english]{babel}
+\usepackage{amsmath,amssymb,amstext} % math
+\usepackage{float}
+\usepackage{array}           % array table
+\usepackage{fancyhdr}        % header footer
+\usepackage{graphicx}        % figure
+\usepackage{lmodern}
+\usepackage{xcolor}
+\usepackage{algorithm2e}
+\usepackage{booktabs}
+
+\author{Zhibo Wang}
+\title{Beamer Theme}
+\date{November 26th, 2018}
+
+\AtBeginSection[]{
+    \frame{\frametitle{Outline}\tableofcontents[currentsection, 
+    subsectionstyle=show/show/shaded]}
+}
+
+\begin{document}
+
+    \frame[plain]{\titlepage}
+    \frame{\frametitle{Outline}\tableofcontents}
+
+    \section{Introduction}
+
+    \begin{frame}
+        \frametitle{Latex and Beamer}
+        
+        LaTeX is a high-quality typesetting system; 
+        it includes features designed for the production of 
+        technical and scientific documentation.
+
+        \vspace{0.4cm}
+
+        \pause
+
+        Beamer is a LaTeX class to create powerful, 
+        flexible and nice-looking presentations and slides. 
+        
+        The beamer class is focussed on producing (on-screen) presentations, 
+        along with support material such as handouts and speaker notes.
+        
+    \end{frame}
+
+    \section{Beamer Basic}
+    \subsection{Hightlight}
+
+    \begin{frame}
+        \frametitle{Block and Alert}
+            
+        \vspace{-1.1cm}
+
+        \begin{block}{Pythagorean theorem}
+            \vspace*{-\baselineskip}\setlength\belowdisplayshortskip{0.6pt}
+            $$a^2 + b^2 = c^2$$
+            % \vspace*{-\baselineskip}\setlength\belowdisplayshortskip{0.1pt}
+            where c represents the length of the hypotenuse and 
+            a and b the lengths of the triangle's other two sides.
+        \end{block}
+        
+        \begin{alertblock}{Remark}
+            \begin{itemize}
+                \item the environment above is \alert{block}
+                \item the environment here is \alert{alertblock}
+            \end{itemize}
+        \end{alertblock}
+
+        \alert{Hightlight} these words are highlighted by $\backslash alert$.
+    \end{frame}
+
+    \begin{frame}
+        \frametitle{Proof}
+
+        \begin{block}{Pythagorean theorem}
+            \vspace*{-\baselineskip}\setlength\belowdisplayshortskip{0.1pt}
+            $$a^2 + b^2 = c^2$$
+            % \vspace*{-\baselineskip}\setlength\belowdisplayshortskip{0.2pt}
+        \end{block}
+        
+        \vspace{0.4cm}
+
+        \begin{proof}
+            \vspace*{-\baselineskip}\setlength\belowdisplayshortskip{0pt}
+            \begin{align*}
+                &3^2 + 4^2 = 5^2\\
+                &5^2 + 12^2 = 13^2
+            \end{align*}
+            % \vspace*{-\baselineskip}\setlength\belowdisplayshortskip{0pt}
+        \end{proof}
+        
+    \end{frame}
+
+    \subsection{Other Environments}
+
+    \begin{frame}[shrink=15]{Algorithm}
+        
+        \begin{algorithm}[H]
+            \KwData{this text}
+            \KwResult{how to write algorithm with \LaTeX2e }
+            initialization\;
+            \While{not at end of this document}{
+                read current\;
+                \eIf{understand}{
+                go to next section\;
+                current section becomes this one\;
+                }{
+                go back to the beginning of current section\;
+                }
+            }
+            \caption{How to write algorithms
+            (copied from \href{https://en.wikibooks.org/wiki/LaTeX/Algorithms}{here})}
+            \end{algorithm}
+    \end{frame}
+
+    \begin{frame}{More}
+
+        More environments such as
+
+        \begin{itemize}
+            \item Definition
+            \item lemma
+            \item corollary
+            \item example
+        \end{itemize}
+        
+    \end{frame}
+
+    \section{Beamer More}
+
+    \subsection{Split Screen}
+    
+    \begin{frame}{Minipage}
+        \begin{minipage}{0.5\linewidth}
+            \begin{figure}[h]
+                \includegraphics[width=\textwidth]{imgs/pythagorean.jpg}
+            \end{figure}
+        \end{minipage}%
+        \hfill
+        \begin{minipage}{0.4\linewidth}
+            \begin{itemize}
+                \item item
+                \item another
+                \item more
+                \begin{enumerate}
+                    \item first
+                    \item second
+                    \item third
+                \end{enumerate}
+            \end{itemize}
+        \end{minipage}
+        
+    \end{frame}
+
+    \begin{frame}{Columns}
+        \begin{columns}
+            \column{0.5\textwidth}
+            This is a text in first column.
+            $$E=mc^2$$
+            \begin{itemize}
+            \item First item
+            \item Second item
+            \end{itemize}
+            
+            \column{0.5\textwidth}
+            \begin{block}{first block}
+                columns achieves splitting the screen
+            \end{block}
+            \begin{block}{second block}
+                stack block in columns
+            \end{block}
+            
+        \end{columns}
+    \end{frame}
+
+    \subsection{Table}
+    
+
+
+
+    \begin{frame}{Create Tables}
+        \begin{center}
+            \begin{table}[!t]  
+                % \caption{Three line}
+                % \label{table_time}
+                \begin{tabular}{ccc}  
+                    \toprule   
+                    first&second&third\\ 
+                    \midrule       
+                    1 & 2 & 3 \\ 
+                    4 & 5 & 6 \\ 
+                    7 & 8 & 9 \\
+                    \bottomrule  
+                \end{tabular}
+            \end{table}
+        \end{center}
+    \end{frame}
+
+    \section{Conclusion}
+
+    \begin{frame}{End}
+        This document just aims to test styles in beamer.
+    \end{frame}
+
+\end{document} 

example169.tex

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+\documentclass[aspectratio=169]{beamer}
+\input{template_long.tex}
+\input{content.tex}

example43.tex

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+\documentclass{beamer}
+
+    \usetheme{Copenhagen}
+    \usecolortheme{beaver}
+    \input{template_short.tex}
+
+    \input{content.tex}
+
+
+    

setting169.tex

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+% footline
+% delete navigation below
+\setbeamertemplate{navigation symbols}{}
+% define footline
+\makeatother
+\setbeamertemplate{footline}
+{
+    \leavevmode%
+    \hbox{%
+    \begin{beamercolorbox}[wd=.4\paperwidth,ht=2.25ex,dp=1ex,center]{author in head/foot}%
+    \usebeamerfont{author in head/foot}\insertshortauthor
+    \end{beamercolorbox}
+    
+    \begin{beamercolorbox}[wd=.6\paperwidth,ht=2.25ex,dp=1ex,center]{title in head/foot}%
+    \usebeamerfont{title in head/foot}\insertshorttitle\hspace*{13em}
+    \insertframenumber{} / \inserttotalframenumber\hspace*{0ex}
+    \end{beamercolorbox}}
+    
+    \vskip0pt%
+}
+\makeatletter
+% footline color
+\setbeamercolor{author in head/foot}{fg=black, bg=mygrey!5!white}
+\setbeamercolor{title in head/foot}{fg=black, bg=mygrey!5!white}
+% sidebar color
+\setbeamercolor{structure}{fg=main, bg=mygrey!10!white}
+
+
+% sidebar
+% on the right
+\useoutertheme[width=5\baselineskip,right]{sidebar}
+% delete title and author
+\makeatletter
+\setbeamertemplate{sidebar right}{\insertverticalnavigation{\beamer@sidebarwidth}}
+\makeatother
+% fontsize
+\setbeamerfont{section in sidebar}{size=\scriptsize}
+\setbeamerfont{subsection in sidebar}{size=\scriptsize}
+% margin
+\setbeamersize{sidebar width right=3cm}
+\setbeamersize{sidebar width left=2cm}
+
+
+% item settings
+\setbeamertemplate{itemize item}{$\color{main}\bullet$}
+\setbeamertemplate{enumerate items}[square]
+\setbeamertemplate{section in toc}[sections numbered]
+\setbeamertemplate{subsection in toc}[square]
+
+
+% color definition
+%\definecolor{alizarin}{rgb}{0.82, 0.1, 0.26} % red
+\definecolor{myblack}{rgb}{0.24, 0.17, 0.12}
+\definecolor{mygrey}{rgb}{0.52, 0.52, 0.51}
+
+\definecolor{berlin}{rgb}{0.64, 0, 0} % red
+\colorlet{main}{berlin}
+\colorlet{text}{myblack!100!white}
+%% main candidates
+%% 1
+% \definecolor{DarkFern}{HTML}{407428} % green
+% \colorlet{main}{DarkFern!100!white}
+%% 2
+% \definecolor{bluegreen}{rgb}{0.047 0.282 0.259} % green
+% \colorlet{main}{bluegreen}
+%% 3
+% \definecolor{mybrown}{HTML}{967249} % brown
+% \colorlet{main}{mybrown}
+
+% set colors to elements
+%% fg:    itself
+%% bg:    background
+%% !num!: gradient
+\setbeamercolor{title}{fg=main}
+\setbeamercolor{frametitle}{fg=main, bg=white}
+\setbeamercolor{section in toc}{fg=text} 
+\setbeamercolor{normal text}{fg=text}
+\setbeamercolor{block title}{fg=main,bg=mygrey!14!white}
+\setbeamercolor{block body}{fg=black,bg=mygrey!10!white}
+\setbeamercolor{block body alerted}{bg=white}
+\setbeamercolor{block title alerted}{fg=main,bg=white}
+\setbeamercolor{alerted text}{fg=main}
+\setbeamercolor{qed symbol}{fg=main} % proof end square
+\setbeamercolor{math text}{fg=black}
+\hypersetup{colorlinks,linkcolor=,urlcolor=main!80!white}
+
+

setting43.tex

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+% footline
+% delete navigation below
+\setbeamertemplate{navigation symbols}{}
+% define footline
+\makeatother
+\setbeamertemplate{footline}
+{
+    \leavevmode%
+    \hbox{%
+    \begin{beamercolorbox}[wd=.4\paperwidth,ht=2.25ex,dp=1ex,center]{author in head/foot}%
+    \usebeamerfont{author in head/foot}\insertshortauthor
+    \end{beamercolorbox}
+    
+    \begin{beamercolorbox}[wd=.6\paperwidth,ht=2.25ex,dp=1ex,center]{title in head/foot}%
+    \usebeamerfont{title in head/foot}\insertshorttitle\hspace*{13em}
+    \insertframenumber{} / \inserttotalframenumber\hspace*{0ex}
+    \end{beamercolorbox}}
+    
+    \vskip0pt%
+}
+\makeatletter
+% footline color
+\setbeamercolor{author in head/foot}{fg=black, bg=mygrey!5!white}
+\setbeamercolor{title in head/foot}{fg=black, bg=mygrey!5!white}
+% sidebar color
+\setbeamercolor{structure}{fg=main, bg=mygrey!10!white}
+
+
+% sidebar
+% delete title and author
+\makeatletter
+\setbeamertemplate{sidebar right}{\insertverticalnavigation{\beamer@sidebarwidth}}
+\makeatother
+% fontsize
+\setbeamerfont{section in sidebar}{size=\scriptsize}
+\setbeamerfont{subsection in sidebar}{size=\scriptsize}
+
+% item settings
+\setbeamertemplate{itemize item}{$\color{main}\bullet$}
+\setbeamertemplate{enumerate items}[square]
+\setbeamertemplate{section in toc}[sections numbered]
+\setbeamertemplate{subsection in toc}[square]
+
+
+% color definition
+%\definecolor{alizarin}{rgb}{0.82, 0.1, 0.26} % red
+\definecolor{myblack}{rgb}{0.24, 0.17, 0.12}
+\definecolor{mygrey}{rgb}{0.52, 0.52, 0.51}
+
+\definecolor{berlin}{rgb}{0.64, 0, 0} % red
+\colorlet{main}{berlin}
+\colorlet{text}{myblack!100!white}
+%% main candidates
+%% 1
+% \definecolor{DarkFern}{HTML}{407428} % green
+% \colorlet{main}{DarkFern!100!white}
+%% 2
+% \definecolor{bluegreen}{rgb}{0.047 0.282 0.259} % green
+% \colorlet{main}{bluegreen}
+%% 3
+% \definecolor{mybrown}{HTML}{967249} % brown
+% \colorlet{main}{mybrown}
+
+
+% set colors to elements
+%% fg:    itself
+%% bg:    background
+%% !num!: gradient
+\setbeamercolor{title}{fg=main}
+\setbeamercolor{frametitle}{fg=main, bg=white}
+\setbeamercolor{section in toc}{fg=text} 
+\setbeamercolor{normal text}{fg=text}
+\setbeamercolor{block title}{fg=main,bg=mygrey!14!white}
+\setbeamercolor{block body}{fg=black,bg=mygrey!10!white}
+\setbeamercolor{block body alerted}{bg=white}
+\setbeamercolor{block title alerted}{fg=main,bg=white}
+\setbeamercolor{alerted text}{fg=main}
+\setbeamercolor{qed symbol}{fg=main} % proof end square
+\setbeamercolor{math text}{fg=black}
+\hypersetup{colorlinks,linkcolor=,urlcolor=main!80!white}
+
+
+
+
+
+
+