I'm writing a presentation in beamer.
I want to show semi-transparent overlays in the table of contents items. I mean, I want to show the current item text in black color and the next ones in gray.
Thanks in advance.
[Tex/LaTex] Add Overlays in beamer \tableofcontents items
beameroverlaystable of contents
Related Solutions
The beamer documentclass works in a very similar way to regular LaTeX documentclasses. Moreover, it necessarily includes the use of the hyperref package. That is, compiling even this minimal example (taken from the beamer documentclass documentation)
\documentclass{beamer}
% This is the file main.tex
\usetheme{Berlin}
\title{Example Presentation Created with the Beamer Package}
\author{Till Tantau}
\date{\today}
\begin{document}
\begin{frame}
\titlepage
\end{frame}
\section*{Outline}
\begin{frame}
\tableofcontents
\end{frame}
\section{Introduction}
\subsection{Overview of the Beamer Class}
\subsection{Overview of Similar Classes}
\section{Usage}
\subsection{...}
\subsection{...}
\section{Examples}
\subsection{...}
\subsection{...}
\begin{frame}
\end{frame} % to enforce entries in the table of contents
\end{document}
produces a hyperlinked table of contents. Furthermore, some notable extracts from the documentation includes:
The empty frame at the end (which should be deleted later) ensures that the sections and subsections are actually part of the table of contents. This frame is necessary since a
\sectionor\subsectioncommand following the last page of a document has no effect. (Section 4.2 Step Two: Structure Your Presentation, p 29)
This implies that there is a requirement to use \frame{...} or \begin{frame}...\end{frame} is necessary for the correct setup of your presentation. It may be that you do not have proper frames set up, causing a problem with hyperlinks between your table of contents and sectional headings.
You can structure your text using the commands
\sectionand\subsection. Unlike standard LATEX, these commands will not create a heading at the position where you use them. Rather, they will add an entry to the table of contents and also to the navigation bars. (Section 10.2 Adding Sections and Subsections, p 95)
With the proper setup, \section and \subsection commands should link to the table of contents.
Adapted from the beamer user guide, section 10.5:
\documentclass{beamer}
\setbeamertemplate{section in toc}[sections numbered]
\setbeamertemplate{subsection in toc}[subsections numbered]
%\setbeamertemplate{section in toc}[ball unnumbered]
%\setbeamertemplate{subsection in toc}[ball unnumbered]
\AtBeginSection[]
{
\begin{frame}
\frametitle{Outline}
\tableofcontents[currentsection]
\end{frame}
}
\begin{document}
\begin{frame}
\frametitle{Outline}
\tableofcontents[section,subsection]
\end{frame}
\section{One}
\begin{frame}
Some content
\end{frame}
\subsection{Alpha}
\begin{frame}
Some content
\end{frame}
\section{Two}
\begin{frame}
Some content
\end{frame}
\subsection{Beta}
\begin{frame}
Some content
\end{frame}
\end{document}
Best Answer
In your preamble add
\setbeamercovered{transparent}to make inactive overlay items transparent. The table of contents can be displayed emphasizing only the "current section" by using the optional parameter:If you want to uncover the table of contents section-by-section use the
pausesectionsoption:Please see the beamer user guide for additional options.