[Tex/LaTex] Highlight current section using alert in beamer

beamertable of contents

The following

\AtBeginSection[]
{
\begin{frame}<beamer>
  \frametitle{Outline}
  \tableofcontents[currentsection]
\end{frame}
}

inserts the table of contents at the beginning of each section, such that the current section is rendered normally and the others are shaded. I would like to have a similar effect but instead of shading the other sections, I'd like to alert the current one. Since, according to the manual, the allowed styles are show, shaded, and hide, I don't know how to accomplish this. Is there a canonical way to obtain this behavior?

Best Answer

You can set the section in toc and section in toc shaded colors appropriately:

\documentclass{beamer}


\AtBeginSection[]
{
\setbeamercolor{section in toc}{fg=alerted text.fg}
\setbeamercolor{section in toc shaded}{fg=structure}
\begin{frame}<beamer>
  \frametitle{Outline}
  \tableofcontents[currentsection]
\end{frame}
}

\begin{document}

\section{Test section one}
\begin{frame} test \end{frame}
\section{Test section two}
\begin{frame} test \end{frame}
\section{Test section three}
\begin{frame} test \end{frame}
\section{Test section four}
\begin{frame} test \end{frame}

\end{document}

enter image description here

If "other" sections should not be shaded, you can add

A complete example:

\documentclass{beamer}


\AtBeginSection[]
{
\setbeamercolor{section in toc}{fg=alerted text.fg}
\setbeamercolor{section in toc shaded}{bg=structure!20,fg=structure}
\setbeamertemplate{section in toc shaded}[default][100]
\begin{frame}<beamer>
  \frametitle{Outline}
  \tableofcontents[currentsection]
\end{frame}
}

\begin{document}

\section{Test section one}
\begin{frame} test \end{frame}
\section{Test section two}
\begin{frame} test \end{frame}
\section{Test section three}
\begin{frame} test \end{frame}
\section{Test section four}
\begin{frame} test \end{frame}

\end{document}

enter image description here

Related Solutions

[Tex/LaTex] \tableofcontents[ISSUES]

beamer offers you this possibility out of the box, using the sectionstyle, subsectionstyle keys for the \tableofcontents.

If you want, at the beginning of each each section, to have a table of contents showing only the current section with its subsections, all you need is

  currentsection,
  sectionstyle=show/hide,
  subsectionstyle=show/show/hide

so, the following lines

\AtBeginSection[]
{
\begin{frame}<beamer>
\frametitle{Outline}
\tableofcontents[
  currentsection,
  sectionstyle=show/hide,
  subsectionstyle=show/show/hide
]
\end{frame}
}

will do exactly what you need. A complete example:

\documentclass{beamer}

\AtBeginSection[]
{
\begin{frame}<beamer>
\frametitle{Outline}
\tableofcontents[
  currentsection,
  sectionstyle=show/hide,
  subsectionstyle=show/show/hide
]
\end{frame}
}

\begin{document}

\section{Test Section One}
\begin{frame} test\end{frame}
\subsection{Test Subsection One One}
\begin{frame} test\end{frame}
\subsection{Test Subsection One Two}
\begin{frame} test\end{frame}
\subsection{Test Subsection One Three}
\begin{frame} test\end{frame}

\section{Test Section Two}
\begin{frame} test\end{frame}
\subsection{Test Subsection Two One}
\begin{frame} test\end{frame}
\subsection{Test Subsection Two Two}
\begin{frame} test\end{frame}
\subsection{Test Subsection Two Three}
\begin{frame} test\end{frame}

\section{Test Section Three}
\begin{frame} test\end{frame}
\subsection{Test Subsection Three One}
\begin{frame} test\end{frame}
\subsection{Test Subsection Three Two}
\begin{frame} test\end{frame}
\subsection{Test Subsection Three Three}
\begin{frame} test\end{frame}

\end{document}

The ToC for the first section:

enter image description here

The ToC for the second section:

enter image description here

The ToC for the third section:

enter image description here

If what you want is to have, at the beginning of each subsection, a ToC showing the current section and subsection and all other subsections for the current section shaded, then the specification would change to

currentsection,
sectionstyle=show/hide,
subsectionstyle=show/shaded/hide

And the ToC will be produced using

\AtBeginSubsection[]
{
\begin{frame}<beamer>
\frametitle{Outline}
\tableofcontents[
  currentsection,
  sectionstyle=show/hide,
  subsectionstyle=show/shaded/hide
]
\end{frame}
}

A complete example:

\documentclass{beamer}

\AtBeginSubsection[]
{
\begin{frame}<beamer>
\frametitle{Outline}
\tableofcontents[
  currentsection,
  sectionstyle=show/hide,
  subsectionstyle=show/shaded/hide
]
\end{frame}
}

\begin{document}

\section{Test Section One}
\begin{frame} test\end{frame}
\subsection{Test Subsection One One}
\begin{frame} test\end{frame}
\subsection{Test Subsection One Two}
\begin{frame} test\end{frame}
\subsection{Test Subsection One Three}
\begin{frame} test\end{frame}

\section{Test Section Two}
\begin{frame} test\end{frame}
\subsection{Test Subsection Two One}
\begin{frame} test\end{frame}
\subsection{Test Subsection Two Two}
\begin{frame} test\end{frame}
\subsection{Test Subsection Two Three}
\begin{frame} test\end{frame}

\section{Test Section Three}
\begin{frame} test\end{frame}
\subsection{Test Subsection Three One}
\begin{frame} test\end{frame}
\subsection{Test Subsection Three Two}
\begin{frame} test\end{frame}
\subsection{Test Subsection Three Three}
\begin{frame} test\end{frame}

\end{document}

An image of the ToC for the second subsection of the first section:

enter image description here

An image of the ToC for the third subsection of the third section:

enter image description here

[Tex/LaTex] Highlight current section in beamer

This can be done using a redefinition of \insertverticalnavigation to suppress a conditional (the lines commented out as marked using % NEW in the code below):

\documentclass{beamer}

% beamer theme
\usetheme{Marburg}

% redefinition of \insertverticalnavigation to get the desired highlighting for
% sections in the sidebar
\makeatletter
\def\insertverticalnavigation#1{%
  \vbox{%
    \def\sectionentry##1##2##3##4##5{%
      \ifnum##5=\c@part%
      \def\insertsectionhead{##2}%
      \def\insertsectionheadnumber{##1}%
      \def\insertpartheadnumber{##5}%
      \hbox{{%
        \usebeamerfont{section in sidebar}\usebeamercolor[fg]{section in sidebar}%
          \hyperlink{Navigation##3}{%
          \ifnum\c@section=##1%
            %\ifnum\c@subsection=0\relax% NEW
              {\usebeamertemplate{section in sidebar}}%
            %\else%% NEW
              \ifx\beamer@nav@css\beamer@hidetext%
                {\usebeamertemplate{section in sidebar}}%
              \else%
                {\usebeamertemplate{section in sidebar shaded}}%
              \fi%
            %\fi%% NEW
          \else
            {\usebeamertemplate{section in sidebar shaded}}%
          \fi}}}%
      \beamer@currentsubsection=0\relax\fi}%
    \def\slideentry##1##2##3##4##5##6{}%
    \def\beamer@subsectionentry##1##2##3##4##5{%
      \ifnum##1=\c@part%
      \def\insertpartheadnumber{##1}%
      \def\insertsectionheadnumber{##2}%
      \def\insertsubsectionheadnumber{##3}%
      \def\insertsubsectionhead{##5}%
       \beamer@tocifnothide{\ifnum\c@section=##2\ifnum\c@subsection=##3\beamer@nav@css\else\beamer@nav@oss\fi\else\beamer@nav@ooss\fi}%
      {\hbox{{%
        \usebeamerfont{subsection in sidebar}\usebeamercolor[fg]{subsection in sidebar}%
          \hyperlink{Navigation##4}{%
          \ifnum\c@section=##2%
            \ifnum\c@subsection=##3%
              \ifnum\c@subsubsection=0\relax%
                {\usebeamertemplate{subsection in sidebar}}%
              \else%
                {\usebeamertemplate{subsection in sidebar shaded}}%
              \fi%
            \else%
              {\usebeamertemplate{subsection in sidebar shaded}}%
            \fi%
          \else%
            {\usebeamertemplate{subsection in sidebar shaded}}%
          \fi}}}%
      }%
      \fi}%
    \def\beamer@subsubsectionentry##1##2##3##4##5##6{%
      \ifnum##1=\c@part%
      \def\insertpartheadnumber{##1}%
      \def\insertsectionheadnumber{##2}%
      \def\insertsubsectionheadnumber{##3}%
      \def\insertsubsubsectionheadnumber{##3}%
      \def\insertsubsubsectionhead{##6}%
      \beamer@tocifnothide{\ifnum\c@section=##2\ifnum\c@subsection=##3\beamer@nav@css\else\beamer@nav@oss\fi\else\beamer@nav@ooss\fi}%
      {\hbox{{%
        \usebeamerfont{subsubsection in sidebar}\usebeamercolor[fg]{subsubsection in sidebar}%
          \hyperlink{Navigation##5}{%
          \ifnum\c@section=##2%
            \ifnum\c@subsection=##3%
              \ifnum\c@subsubsection=##4%
                {\usebeamertemplate{subsubsection in sidebar}}%
              \else
                {\usebeamertemplate{subsubsection in sidebar shaded}}%
              \fi%
            \else%
              {\usebeamertemplate{subsubsection in sidebar shaded}}%
            \fi%
          \else%
            {\usebeamertemplate{subsubsection in sidebar shaded}}%
          \fi}}}%
      }%
      \fi}%
    %\beamer@currentsubsection=0\relax%
    \dohead%
  }%
}
\makeatother
% german spelling
\usepackage[english,ngerman]{babel}

% set font encoding
\usepackage[T1]{fontenc}

% math stuff
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}

% set fonts
\usepackage{xltxtra}
\usefonttheme{professionalfonts}
%\setsansfont[
%BoldFont={Helvetica Neue Medium},
%ItalicFont={Helvetica Neue Italic},
%BoldItalicFont={Helvetica Neue Medium Italic},
%Ligatures=TeX
%]{Helvetica Neue Light}
%\setmonofont[Scale=0.9]{Menlo Regular}

% slide numbers in the bottom right corner
\addtobeamertemplate{footline}{%
\hfill\usebeamertemplate***{navigation symbols}
\insertframenumber{}\hspace{3mm}\vspace{2mm}}{}

% removes navigation bar
\beamertemplatenavigationsymbolsempty

% color definitions
\definecolor{konzeBlue}{RGB}{45,170,250}
\definecolor{konzeBlueLight}{RGB}{116,199,252}
\definecolor{mainTextColor}{RGB}{80,80,80}
\definecolor{titleTextColor}{RGB}{120,120,120}

\makeatletter

% title page
\setbeamercolor{title}{fg=titleTextColor}
\setbeamercolor{author}{fg=mainTextColor}
\setbeamercolor{date}{fg=mainTextColor}

% sidebar
\setbeamertemplate{sidebar canvas right}[vertical shading][top=konzeBlue,bottom=konzeBlue]
\setbeamercolor{author in sidebar}{fg=white}
\setbeamercolor{section in sidebar}{fg=white}
\setbeamercolor{section in sidebar}{bg=konzeBlueLight}
\setbeamerfont{section in sidebar}{size=\tiny}
\setbeamerfont{section in sidebar}{series=\bfseries}
\setbeamercolor{subsection in sidebar}{fg=white}
\setbeamercolor{subsection in sidebar}{bg=konzeBlueLight}
\setbeamerfont{subsection in sidebar}{series=\tiny}

% slide number
\setbeamercolor{footline}{fg=white}

% frame
\setbeamercolor{frametitle}{fg=titleTextColor}
\makeatother


\title{Something}
\author{Max Mustermann}
\date{\today}

\begin{document}
\color{mainTextColor}

\section{Test section one}
\begin{frame}
test
\end{frame}

\subsection{Test subsection}
\begin{frame}
test
\end{frame}

\subsection{Test subsection}
\begin{frame}
test
\end{frame}

\section{Test section two}
\begin{frame}
test
\end{frame}

\subsection{Test subsection}
\begin{frame}
test
\end{frame}

\subsection{Test subsection}
\begin{frame}
test
\end{frame}

\end{document}

enter image description here

I commented out the lines using the Helvetica fonts since I don't have that font in my system, but that's irrelevant for the solution.

Best Answer

Related Solutions

[Tex/LaTex] \tableofcontents[ISSUES]

[Tex/LaTex] Highlight current section in beamer

Related Question