我正在使用 beamer 进行演示，我想在幻灯片的顶部添加一个进度条。我希望它类似于此处显示的内容：(Beamer：如何添加带有章节标题的进度条？)。但是，我不仅需要章节标题，还需要当前子章节的标题。如果子章节标题可以出现在其章节名称下方，那就完美了。
有人能帮我吗？提前谢谢了，
答案1
这是首次尝试添加当前子节。唯一的问题是当子节包含 p、q 和 y 等字母时会跳转（例如从幻灯片 2 更改为 3）。也许是锚点问题，但我不知道如何解决它。
代码：我为每项添加或更改都添加了注释。希望我没有忘记任何内容。
\documentclass{beamer}
\usepackage{tikz}
\usetikzlibrary{calc,patterns.meta}
% To provide total amount of sections throughout the document
\usepackage{totcount}
% Registers de total amount of sections (see https://tex.stackexchange.com/a/192506/141947)
\regtotcounter{section}
% To be able to refer to sections when needed
\usepackage{nameref}
% Redefinition of the \section command so that each one is labeled \label{sec:n} where n is its index
\let\oldsection\section
\renewcommand{\section}[2][\relax]{%
\ifx#1\relax
\oldsection{#2}%
\else
\oldsection[#1]{#2}%
\fi%
\label{sec:\thesection}%
}
% ADDED:
\let\oldsubsection\subsection
\renewcommand{\subsection}[2][\relax]{%
\ifx#1\relax
\oldsubsection{#2}%
\else
\oldsubsection[#1]{#2}%
\fi%
\label{subsec:\thesection-\thesubsection}%
}
% Definition of custom colors based on the initial figure of the bar by the OP
\definecolor{myblue}{HTML}{57AED1}
\definecolor{mygreen}{HTML}{8BC53F}
\definecolor{mygray}{HTML}{DDDDDD}
% Definition of custom tikz styles in order to ease readability
\tikzset{
% Bar style (Argument : color)
sectionbar/.style={
% Filling with one color as a preaction, in order to avoid reset by the pattern color
preaction={fill=#1!70},
% Application of the line pattern on to of the fill
pattern={Lines[angle=45,distance={6pt},line width=3pt]},pattern color=#1
},
% Node style (Arguments : color, section number)
sectionnode/.style 2 args={
fill=#1,
draw=white,
thick,
circle,
text=white,
radius=10pt,
% Display of the section name below the cicle
label={[text=#1,align=center]below:\nameref{sec:#2}\\~},% CHANGED
},
% ADDED: Node style (Arguments : color, section number, subsection number)
sectionnodeWithSubsection/.style n args={3}{
fill=#1,
draw=white,
thick,
circle,
text=white,
radius=10pt,
% Display of the section name and the subsection name below the cicle
label={[text=#1,align=center]below:\nameref{sec:#2}\\-- \nameref{subsec:#2-#3} --},
}
}
% Actual definition of the colorbar based on Gonzalo Medina's initial proposal
\makeatletter
\def\pbar@progressbar{} % the progress bar
\newcount\pbar@tmpcnta% auxiliary counter
\newcount\pbar@tmpcntb% auxiliary counter
\newdimen\pbar@pbht %progressbar height
\newdimen\pbar@pbwd %progressbar width
\newdimen\pbar@tmpdim % auxiliary dimension
\pbar@pbwd=\linewidth
\pbar@pbht=4pt
% The progress bar
\def\pbar@progressbar{%
\pbar@tmpcnta=\value{section} % tmpcnta stores the section number
\pbar@tmpcntb=\totvalue{section} % tmbcountb sotres the total amount of sections
\advance\pbar@tmpcntb by 1 % tmbcountb is advanced by 1 in order to have the last bar segment after the last node
\begin{tikzpicture}[very thin]
% Clipping scope to avoid tests for the bar dimensions
\begin{scope}
% Clipping path
\path[rounded corners=2pt,clip] (0pt,{-\pbar@pbht/2}) rectangle (\pbar@pbwd,{\pbar@pbht/2});
% Gray bar (from 0 to last section)
\path[sectionbar=mygray] (0pt,{-\pbar@pbht/2}) rectangle (\linewidth,{\pbar@pbht/2});
% Blue bar (from 0 to the current section)
\path[sectionbar=myblue] (0pt,{-\pbar@pbht/2}) rectangle ({(\[email protected])*\linewidth/\pbar@tmpcntb},{\pbar@pbht/2});
% Green bar (from current to next section)
\path[sectionbar=mygreen] ({(\[email protected])*\linewidth/\pbar@tmpcntb},{-\pbar@pbht/2}) rectangle ({(\pbar@tmpcnta+0.5)*\linewidth/\pbar@tmpcntb},{\pbar@pbht/2});
\end{scope}
% Drawing of the nodes on top of the bars, based on the number of the current section
\foreach \secnumber in {1,...,\totvalue{section}}{
% Number is lower, section is past, blue color
\ifnum\secnumber<\pbar@tmpcnta
\node[sectionnode={myblue}{\secnumber}] at ({(\secnumber-0.5)*\linewidth/\pbar@tmpcntb},0) {\strut\secnumber};
\fi
% Number is equal, section is current, green color
\ifnum\secnumber=\pbar@tmpcnta
% CHANGED:
% if we have a current subsection, show current subsection
\ifnum\thesubsection>0
\node[sectionnodeWithSubsection={mygreen}{\secnumber}{\thesubsection}] at ({(\secnumber-0.5)*\linewidth/\pbar@tmpcntb},0) {\strut\secnumber};
\else
\node[sectionnode={mygreen}{\secnumber}] at ({(\secnumber-0.5)*\linewidth/\pbar@tmpcntb},0) {\strut\secnumber};
\fi
\fi
% Number is larger, to be done section, gray color
\ifnum\secnumber>\pbar@tmpcnta
\node[sectionnode={mygray}{\secnumber}] at ({(\secnumber-0.5)*\linewidth/\pbar@tmpcntb},0) {\strut\secnumber};
\fi
}
\end{tikzpicture}%
}
\addtobeamertemplate{headline}{}
{%
\begin{beamercolorbox}[wd=\paperwidth,ht=13ex,center,dp=1ex]{white}% CHANGED: value of ht
\pbar@progressbar%
\end{beamercolorbox}%
}
\makeatother
\begin{document}
\section{Introduction}
\begin{frame}
\frametitle{Introduction}
test
\end{frame}
\section{Motivation}
\subsection{Sub:Motivation}
\begin{frame}
\frametitle{Motivation}
test
\end{frame}
\section{Methodology}
\subsection{Experiments}
\begin{frame}
\frametitle{Experiments}
test
\end{frame}
\subsection{Statistics}
\begin{frame}
\frametitle{Statistics}
test
\end{frame}
\section{Results}
\subsection{Results 1}
\begin{frame}
\frametitle{Results 1}
test
\end{frame}
\subsection{Results 2}
\begin{frame}
\frametitle{Results 2}
test
\end{frame}
\section{Conclusion}
\begin{frame}
\frametitle{Conclusion}
test
\end{frame}
\end{document}
输出：
