Beamer: ¿Cómo agregar una barra de progreso con títulos de sección?

Question

Muchas presentaciones incluyen algún tipo de visualizador donde los oyentes pueden ver fácilmente hasta dónde ha llegado la presentación.

Una excelente opción para hacerlo es agregar un progress baral diseño de la diapositiva.

---

Ejemplo de trabajo mínimo (MWE):

El usuarioGonzalo Medinaha publicado un buen enfoque sobre cómo mostrar un triángulo encima de una línea:

\documentclass{beamer}
\usepackage{tikz}
\usetikzlibrary{calc}

\definecolor{pbgray}{HTML}{575757}% background color for the progress bar

\makeatletter
\def\progressbar@progressbar{} % the progress bar
\newcount\progressbar@tmpcounta% auxiliary counter
\newcount\progressbar@tmpcountb% auxiliary counter
\newdimen\progressbar@pbht %progressbar height
\newdimen\progressbar@pbwd %progressbar width
\newdimen\progressbar@tmpdim % auxiliary dimension

\progressbar@pbwd=\linewidth
\progressbar@pbht=1pt

% the progress bar
\def\progressbar@progressbar{%

    \progressbar@tmpcounta=\insertframenumber
    \progressbar@tmpcountb=\inserttotalframenumber
    \progressbar@tmpdim=\progressbar@pbwd
    \multiply\progressbar@tmpdim by \progressbar@tmpcounta
    \divide\progressbar@tmpdim by \progressbar@tmpcountb

  \begin{tikzpicture}[very thin]
    \draw[pbgray!30,line width=\progressbar@pbht]
      (0pt, 0pt) -- ++ (\progressbar@pbwd,0pt);
    \draw[draw=none]  (\progressbar@pbwd,0pt) -- ++ (2pt,0pt);

    \draw[fill=pbgray!30,draw=pbgray] %
       ( $ (\progressbar@tmpdim, \progressbar@pbht) + (0,1.5pt) $ ) -- ++(60:3pt) -- ++(180:3pt) ;

    \node[draw=pbgray!30,text width=3.5em,align=center,inner sep=1pt,
      text=pbgray!70,anchor=east] at (0,0) {\insertframenumber/\inserttotalframenumber};
  \end{tikzpicture}%
}

\addtobeamertemplate{headline}{}
{%
  \begin{beamercolorbox}[wd=\paperwidth,ht=5ex,center,dp=1ex]{white}%
    \progressbar@progressbar%
  \end{beamercolorbox}%
}
\makeatother

\begin{document}

    \section{Introduction}

        \begin{frame}
            \frametitle{Introduction}
            test
        \end{frame}

    \section{Motivation}

        \begin{frame}
            \frametitle{Motivation}
            test
        \end{frame}

    \section{Methodology}

        \begin{frame}
            \frametitle{Experiments}
            test
        \end{frame}

        \begin{frame}
            \frametitle{Statistics}
            test
        \end{frame}

    \section{Results}

        \begin{frame}
            \frametitle{Results 1}
            test
        \end{frame}

        \begin{frame}
            \frametitle{Results 2}
            test
        \end{frame}

    \section{Conclusion}

        \begin{frame}
            \frametitle{Conclusion}
            test
        \end{frame}

\end{document}

---

Pregunta:

Esto realmente se ve bien, pero preferiría agregarlo section titlestambién a la línea de tiempo.

Aquí puedes ver:

• IntroducciónyMotivaciónya ha sido presentado
• Metodologíase presenta actualmente
• ResultadosyConclusiónse presentará después

¿Sería posible ampliar el código para que los títulos de las secciones también aparezcan en la línea de tiempo?

Answer 1

Sé que ha pasado un tiempo, pero puedes culpar al encierro aquí en Francia por darme tiempo libre...

Partí de la propuesta de Gonzalo Medina y construí lo que faltaba en torno a ella. Creo que esto es lo más difícil que he hecho con LaTeX, así que gracias por tu pregunta, aprendí muchas cosas al preparar esta respuesta.

\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}%
}

% 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]below:\nameref{sec:#2}},
        }
}


% 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
                \node[sectionnode={mygreen}{\secnumber}] at ({(\secnumber-0.5)*\linewidth/\pbar@tmpcntb},0) {\strut\secnumber};
            \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=10ex,center,dp=1ex]{white}%
    \pbar@progressbar%
  \end{beamercolorbox}%
}
\makeatother

\begin{document}


\section{Introduction}

\begin{frame}
    \frametitle{Introduction}
    test
\end{frame}

\section{Motivation}

\begin{frame}
    \frametitle{Motivation}
    test
\end{frame}

\section{Methodology}

\begin{frame}
    \frametitle{Experiments}
    test
\end{frame}

\begin{frame}
    \frametitle{Statistics}
    test
\end{frame}

\section{Results}

\begin{frame}
    \frametitle{Results 1}
    test
\end{frame}

\begin{frame}
    \frametitle{Results 2}
    test
\end{frame}

\section{Conclusion}

\begin{frame}
    \frametitle{Conclusion}
    test
\end{frame}
\end{document}

EDITARSolo por diversión, una definición un poco más sencilla o la barra usando una pgf ifthenelseconstrucción y precálculo \linewidth/\pbar@tempcntb.

% 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
    \pbar@tmpdim=\linewidth
    \divide\pbar@tmpdim by \pbar@tmpcntb

    \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])*\pbar@tmpdim},{\pbar@pbht/2});
        % Green bar (from current to next section)
        \path[sectionbar=mygreen] ({(\[email protected])*\pbar@tmpdim},{-\pbar@pbht/2}) rectangle ({(\pbar@tmpcnta+0.5)*\pbar@tmpdim},{\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}}{
            % Conditional definition of the colors
            \pgfmathsetmacro{\currcolor}{(\secnumber<\pbar@tmpcnta ? "myblue" : (\secnumber==\pbar@tmpcnta ? "mygreen" : "mygray"))}
            \node[sectionnode={\currcolor}{\secnumber}] at ({(\secnumber-0.5)*\pbar@tmpdim},0) {\strut\secnumber};
        }
  \end{tikzpicture}%
}

\addtobeamertemplate{headline}{}
{%
  \begin{beamercolorbox}[wd=\paperwidth,ht=10ex,center,dp=1ex]{white}%
    \pbar@progressbar%
  \end{beamercolorbox}%
}
\makeatother