My navigation bar is divided into 2 parts, which I have sections in one part and subsections in the other part. The number of sections and subsections is too much to fit in one line. I want them to be wrapped. I found the following code in a question answered some years ago, but it is written for wrapping sections. What change should I make on the code so that is works for subsections too?
Here is the code:
\makeatletter
\def\insertsectionnavigationhorizontal#1#2#3{%
\hbox to #1{{%
\def\slideentry##1##2##3##4##5##6{}%
#2\hskip.3cm%
\newdimen\tmp@parbox%
\setlength\tmp@parbox{#1}%
\addtolength\tmp@parbox{-.6cm}%
\parbox{\tmp@parbox}{\raggedleft%
\usebeamerfont{section in head/foot}\usebeamercolor[fg]{section in head/foot}%
\setbox\beamer@sectionbox=\hbox{}%
\ht\beamer@sectionbox=1.875ex%
\dp\beamer@sectionbox=0.75ex%
\hskip-1.875ex plus-1fill\dohead%
\box\beamer@sectionbox}\hfil\hskip.3cm%
#3}}}
\makeatother
Top Answer
samcarter
The following code will wrap both the section and subsection navigation. The total height can be adjusted by modifying `\setlength{\myheight}{0.8cm}`
```
\documentclass[compress]{beamer}
\usetheme{Warsaw}
\makeatletter
\newbox\mysectionbox
\newbox\mysubsectionbox
\newlength{\myheight}
\setlength{\myheight}{0.8cm}
\setbeamertemplate{headline}{%
\leavevmode%
\setbox\mysectionbox=\hbox{\insertsectionnavigationhorizontal{.5\paperwidth}{\hskip0pt plus1filll}{}}%
\setbox\mysubsectionbox=\hbox{\insertsubsectionnavigationhorizontal{.5\paperwidth}{}{\hskip0pt plus1filll}}%
\begin{beamercolorbox}[wd=.5\paperwidth,dp=0cm,ht=\myheight]{section in head/foot}%
\vfil\box\mysectionbox\vfil
\end{beamercolorbox}%
\begin{beamercolorbox}[wd=.5\paperwidth,dp=0cm,ht=\myheight]{subsection in head/foot}%
\vfil\box\mysubsectionbox\vfil%
\end{beamercolorbox}%
}
\def\insertsectionnavigationhorizontal#1#2#3{%
\hbox to #1{{%
\def\slideentry##1##2##3##4##5##6{}%
#2\hskip.3cm%
\parbox{.45\paperwidth}{\usebeamerfont{section in head/foot}\usebeamercolor[fg]{section in head/foot}%
\setbox\beamer@sectionbox=\hbox{}%
\ht\beamer@sectionbox=1.875ex%
\dp\beamer@sectionbox=0.75ex%
\hskip-1.875ex plus-1fill\dohead%
\box\beamer@sectionbox}\hfil\hskip.3cm%
#3}}}
\def\insertsubsectionnavigationhorizontal#1#2#3{%
\hbox to #1{{%
\usebeamerfont{subsection in head/foot}\usebeamercolor[fg]{subsection in head/foot}%
\beamer@currentsubsection=0%
\def\sectionentry##1##2##3##4##5{}%
\def\slideentry##1##2##3##4##5##6{\ifnum##6=\c@part\ifnum##1=\c@section%
\ifnum##2>\beamer@currentsubsection%
\beamer@currentsubsection=##2%
\box\beamer@sectionbox\hskip1.875ex plus1fill%
\setbox\beamer@sectionbox=
\hbox{\def\insertsubsectionhead{##5}%
\def\insertsectionheadnumber{##1}%
\def\insertsubsectionheadnumber{##2}%
\def\insertpartheadnumber{##6}%
\ifnum\c@subsection=##2%
\beamer@link(##4){{\usebeamertemplate{subsection in head/foot}}}\else%
\beamer@link(##4){{\usebeamertemplate{subsection in head/foot shaded}}}\fi}%
\ht\beamer@sectionbox=1.875ex%
\dp\beamer@sectionbox=0.75ex%
\fi\fi\fi\ignorespaces}%
\hskip.3cm\parbox{.45\paperwidth}{ #2\setbox\beamer@sectionbox=\hbox{}%
\hskip-1.875ex plus-1fill\dohead%
\box\beamer@sectionbox\hfil%
#3}}}}
\makeatother
\begin{document}
\section{title}
\section{titlea}
\section{titlea}
\section{titlea}
\section{titlea}
\section{titlea}
\section{titlea}
\section{titlea}
\section{titlea}
\section{titlea}
\section{titlea}
\section{titlea}
\section{titlea}
\section{titlea}
\subsection{title}
\begin{frame}
abc
\end{frame}
\subsection{titlea}
\begin{frame}
abc
\end{frame}
\subsection{titlea}
\begin{frame}
abc
\end{frame}
\subsection{titlea}
\begin{frame}
abc
\end{frame}
\subsection{titlea}
\begin{frame}
abc
\end{frame}
\subsection{titlea}
\begin{frame}
abc
\end{frame}
\subsection{titlea}
\begin{frame}
abc
\end{frame}
\subsection{titlea}
\begin{frame}
abc
\end{frame}
\subsection{titlea}
\begin{frame}
abc
\end{frame}
\subsection{titlea}
\begin{frame}
abc
\end{frame}
\subsection{titlea}
\begin{frame}
abc
\end{frame} \subsection{titlea}
\begin{frame}
abc
\end{frame}
\subsection{titlea}
\begin{frame}
abc
\end{frame}
\subsection{titlea}
\begin{frame}
abc
\end{frame}
\subsection{titlea}
\begin{frame}
abc
\end{frame}
\subsection{titlea}
\begin{frame}
abc
\end{frame}
\subsection{titlea}
\begin{frame}
abc
\end{frame}
\subsection{titlea}
\begin{frame}
abc
\end{frame}
\subsection{titlea}
\begin{frame}
abc
\end{frame}
\end{document}
```
