[Tex/LaTex] Modify CambridgeUS theme in beamer

beamer

I'm using CambridgeUS theme in my beamer presentation:

\documentclass[landscape]{beamer}                           % COMANDI INIZIALI
\usepackage[italian]{babel}                             % sillabazione italiana
\usepackage[utf8]{inputenc}                             % Per le lettere accentate IN UNIX E IN WINDOWS
\usepackage{ragged2e}                                   % giustifica
\usepackage{amsmath}                                    % Per allineare le equazioni
\usepackage{amssymb}                                    % Per le lettere dell'indicatrice (mathbb)
\usepackage{graphicx}                                   % Per le figure

\renewcommand{\fontsubfuzz}{1.1pt}                          % Elimina i warning inutili

\justifying                                         % giustifica

\usetheme{CambridgeUS}
\date{29 Aprile 2015}
\author{Gabriele Mazza}
\title{Regressione con regolarizzazioni differenziali per dati spazio-temporali, con applicazione all'analisi della produzione di rifiuti urbani nella provincia di Venezia}

\begin{document}

%Frame del titolo
\begin{frame}
\maketitle
\end{frame}

\end{document}

How can I change it, having only two blocks at the bottom of the frame (with the same colors of the blocks on top), the first one with the author, the second with date (and number of frames)?

Best Answer

CambridgeUS theme uses infolines outer theme which design head and footlines. Footline template is defined with:

\defbeamertemplate*{footline}{infolines theme}
{
  \leavevmode%
  \hbox{%
  \begin{beamercolorbox}[wd=.333333\paperwidth,ht=2.25ex,dp=1ex,center]{author in head/foot}%
    \usebeamerfont{author in head/foot}\insertshortauthor\expandafter\beamer@ifempty\expandafter{\beamer@shortinstitute}{}{~~(\insertshortinstitute)}
  \end{beamercolorbox}%
  \begin{beamercolorbox}[wd=.333333\paperwidth,ht=2.25ex,dp=1ex,center]{title in head/foot}%
    \usebeamerfont{title in head/foot}\insertshorttitle
  \end{beamercolorbox}%
  \begin{beamercolorbox}[wd=.333333\paperwidth,ht=2.25ex,dp=1ex,right]{date in head/foot}%
    \usebeamerfont{date in head/foot}\insertshortdate{}\hspace*{2em}
    \insertframenumber{} / \inserttotalframenumber\hspace*{2ex} 
  \end{beamercolorbox}}%
  \vskip0pt%
}

which declares three boxes for author, title and date and number. If you just want two, copy this definition and adapt it to your taste in your main file:

\documentclass[landscape]{beamer}                           % COMANDI INIZIALI
\usepackage[italian]{babel}                             % sillabazione italiana
\usepackage[utf8]{inputenc}                             % Per le lettere accentate IN UNIX E IN WINDOWS
\usepackage{ragged2e}                                   % giustifica
\usepackage{amsmath}                                    % Per allineare le equazioni
\usepackage{amssymb}                                    % Per le lettere dell'indicatrice (mathbb)
\usepackage{graphicx}                                   % Per le figure

\renewcommand{\fontsubfuzz}{1.1pt}                          % Elimina i warning inutili

\justifying                                         % giustifica

\usetheme{CambridgeUS}
\date{29 Aprile 2015}
\author{Gabriele Mazza}
\title{Regressione con regolarizzazioni differenziali per dati spazio-temporali, con applicazione all'analisi della produzione di rifiuti urbani nella provincia di Venezia}

\makeatletter
\setbeamertemplate{footline}
{
  \leavevmode%
  \hbox{%
  \begin{beamercolorbox}[wd=.5\paperwidth,ht=2.25ex,dp=1ex,center]{author in head/foot}%
    \usebeamerfont{author in head/foot}\insertshortauthor\expandafter\beamer@ifempty\expandafter{\beamer@shortinstitute}{}{~~(\insertshortinstitute)}
  \end{beamercolorbox}%
  \begin{beamercolorbox}[wd=.5\paperwidth,ht=2.25ex,dp=1ex,right]{date in head/foot}%
    \usebeamerfont{date in head/foot}\insertshortdate{}\hspace*{2em}
    \insertframenumber{} / \inserttotalframenumber\hspace*{2ex} 
  \end{beamercolorbox}}%
  \vskip0pt%
}
\makeatother

\begin{document}

%Frame del titolo
\begin{frame}
\maketitle
\end{frame}

\end{document}

enter image description here

If background color for right boxes in head and footlines has to be changed, we need to look again in infolines theme which colors are used.

Right headline box uses subsection in head/foot while date in head/foot is used in footline. We just want to change background color for these boxes and replace it for frametitle.bg one. This can be done inserting

\setbeamercolor{date in head/foot}{use=frametitle, bg=frametitle.bg}
\setbeamercolor{subsection in head/foot}{use=framtitle, bg=frametitle.bg}

in our preamble.

enter image description here

Related Solutions

[Tex/LaTex] Section numbering in Beamer (‘CambridgeUS’ theme)

For those themes using the infolines outer theme, such as CambridgeUS, you can add the following lines to the preamble:

\setbeamertemplate{headline}
{
  \leavevmode%
  \hbox{%
  \begin{beamercolorbox}[wd=.5\paperwidth,ht=2.25ex,dp=1ex,right]{section in head/foot}%
    \usebeamerfont{section in head/foot}\thesection\ \insertsectionhead\hspace*{2ex}
  \end{beamercolorbox}%
  \begin{beamercolorbox}[wd=.5\paperwidth,ht=2.25ex,dp=1ex,left]{subsection in head/foot}%
    \usebeamerfont{subsection in head/foot}\hspace*{2ex}\insertsubsectionhead
  \end{beamercolorbox}}%
  \vskip0pt%
}

EDIT: In the following example I defined a \Switch command that allows to turn on/off the numbering of the sections in the headline; initially, it is set to 0 (turn off numbering), but redefining it to be 1 will turn on the numbering; the command can be redefined as many times as required:

\documentclass{beamer}
\usepackage{ifthen}
\usetheme{CambridgeUS}

\newcommand\Switch{0}
\newcommand\SecInHead{%
  \ifthenelse{\equal{\Switch}{1}}
    {\thesection.}{}}

\setbeamertemplate{headline}
{
  \leavevmode%
  \hbox{%
  \begin{beamercolorbox}[wd=.5\paperwidth,ht=2.25ex,dp=1ex,right]{section in head/foot}%
    \usebeamerfont{section in head/foot}\SecInHead\insertsectionhead\hspace*{2ex}
  \end{beamercolorbox}%
  \begin{beamercolorbox}[wd=.5\paperwidth,ht=2.25ex,dp=1ex,left]{subsection in head/foot}%
    \usebeamerfont{subsection in head/foot}\hspace*{2ex}\insertsubsectionhead
  \end{beamercolorbox}}%
  \vskip0pt%
}
\begin{document}

\begin{frame}
Test frame with un-numbered section
\end{frame}

\renewcommand\Switch{1}
\section{Section a}
\begin{frame}
Test frame with numbered section
\end{frame}

\renewcommand\Switch{0}
\begin{frame}
Test frame with un-numbered section
\end{frame}

\end{document}

[Tex/LaTex] How to edit Beamer theme CambridgeUS

The CambridgeUS theme uses the outer theme infolines. You can download the original file from CTAN and use it as a basis to make your own outer theme with an external link.

In this example the footer contains a fourth field with a link to the beamer user guide:

\mode<presentation>

\setbeamercolor*{author in head/foot}{parent=palette tertiary}
\setbeamercolor*{title in head/foot}{parent=palette secondary}
\setbeamercolor*{date in head/foot}{parent=palette primary}

\setbeamercolor*{section in head/foot}{parent=palette tertiary}
\setbeamercolor*{subsection in head/foot}{parent=palette primary}
% colors for the external link field
\setbeamercolor*{external link}{parent=palette secondary}

\defbeamertemplate*{footline}{withlink theme}
{
  \leavevmode%
  \hbox{%
  \begin{beamercolorbox}[wd=.25\paperwidth,ht=2.25ex,dp=1ex,center]{author in head/foot}%
    \usebeamerfont{author in head/foot}\insertshortauthor\expandafter\beamer@ifempty\expandafter{\beamer@shortinstitute}{}{~~(\insertshortinstitute)}
  \end{beamercolorbox}%
  \begin{beamercolorbox}[wd=.25\paperwidth,ht=2.25ex,dp=1ex,center]{title in head/foot}%
    \usebeamerfont{title in head/foot}\insertshorttitle
  \end{beamercolorbox}%
  \begin{beamercolorbox}[wd=.25\paperwidth,ht=2.25ex,dp=1ex,center]{date in head/foot}%
    \usebeamerfont{date in head/foot}\insertshortdate{}\hspace*{2em}
    \insertframenumber{} / \inserttotalframenumber 
  \end{beamercolorbox}%
  % this is a new field with an external link
  \begin{beamercolorbox}[wd=.25\paperwidth,ht=2.25ex,dp=1ex,right]{external link}%
    \usebeamerfont{author in head/foot}\href{http://mirror.ctan.org/macros/latex/contrib/beamer/doc/beameruserguide.pdf}{Link to manual}\hspace*{2ex}
  \end{beamercolorbox}}%
  \vskip0pt%
}

\defbeamertemplate*{headline}{withlink theme}
{
  \leavevmode%
  \hbox{%
  \begin{beamercolorbox}[wd=.5\paperwidth,ht=2.25ex,dp=1ex,right]{section in head/foot}%
    \usebeamerfont{section in head/foot}\insertsectionhead\hspace*{2ex}
  \end{beamercolorbox}%
  \begin{beamercolorbox}[wd=.5\paperwidth,ht=2.25ex,dp=1ex,left]{subsection in head/foot}%
    \usebeamerfont{subsection in head/foot}\hspace*{2ex}\insertsubsectionhead
  \end{beamercolorbox}}%
  \vskip0pt%
}

\setbeamersize{text margin left=1em,text margin right=1em}

\mode
<all>

Save this as beamerouterthemewithlink.sty and put it in your project folder or the local tex-mf tree. Then you can use it by adding this line in your tex file:

\useoutertheme{withlink}

beamerthemewithlink

Similarly, you could also modify the header by adding another beamercolorbox. Just make sure that the total width of all beamercolorboxes is equal to \textwidth.

Best Answer

Related Solutions

[Tex/LaTex] Section numbering in Beamer (‘CambridgeUS’ theme)

[Tex/LaTex] How to edit Beamer theme CambridgeUS

Related Question