Customizing Bergen beamer theme

Question

Minimal (non-)Working Example:

\documentclass{beamer}
\usepackage{graphicx}
\usetheme{Bergen}
\usecolortheme[named=red]{structure}
\setbeamertemplate{footline}[text line]{%
  \parbox{\linewidth}{\vspace*{-8pt}\hfill \includegraphics[width=2cm]{Logo.jpg}}}
\setbeamertemplate{navigation symbols}{}
\begin{document}
\begin{frame}
\end{frame}
\end{document}

(Logo.jpg is my University's logo.) Result:

Aim:

For the title page, and:

For other pages. Questions:

How do I change the width of the vertical stripe?
How do I make said stripe extend into the footline?
How do I put the logo on the stripe?
How do I change the background?

(Note: Please disregard the size difference of the bottom-right logos, I just need to fix the width= in the \includegraphics command for that.)

Update

With @samcarter's comments, I was able to get the background in:

Code:

\documentclass{beamer}
\setbeamertemplate{background}
{\includegraphics[width=\paperwidth,height=\paperheight,keepaspectratio]{Background.png}}
\usetheme{Bergen}
\usecolortheme[named=red]{structure}
\setbeamertemplate{footline}[text line]{%
  \parbox{\linewidth}{\vspace*{-8pt}\hfill \includegraphics[width=1cm]{Logo.jpg}}}
\setbeamertemplate{navigation symbols}{}
\begin{document}
\begin{frame}
\end{frame}
\end{document}

So question 4 is solved. Her suggestions for 1-2 seem not to work for me. Question 3 is as of now unaddressed.

Why do you want to customize an existing theme for that? It might be easier to simply create a new one… — TeXnician, Dec 10 '18 at 18:31
To extend the red stripe to the bottom either use this trick: https://tex.stackexchange.com/a/464117/36296 or this: https://github.com/josephwright/beamer/issues/520#issuecomment-445573463 — samcarter_is_at_topanswers.xyz, Dec 10 '18 at 18:32
To change the width \setbeamersize{sidebar width left=.15\paperwidth} — samcarter_is_at_topanswers.xyz, Dec 10 '18 at 18:35
I don't think using a theme which is based on the inmargin inner theme is a good idea for this type of desired result, this will look terrible for itemizations etc. Better use something based on the sidebar theme. — samcarter_is_at_topanswers.xyz, Dec 10 '18 at 18:36
@samcarter I'm a total noob at beamer and I don't even know what inner and outer themes are :). OK for graphicx, removing that line. \setbeamersize seems not to be working for me: I tried 1cm and 2cm and the result is the same… — MickG, Dec 10 '18 at 18:38
For changing the background image see e.g. https://tex.stackexchange.com/questions/78464/background-image-in-beamer-slides — samcarter_is_at_topanswers.xyz, Dec 10 '18 at 18:39
@TeXnician Because I didn't even know I could create new themes :). — MickG, Dec 10 '18 at 18:39
The choice of Bergen was just because it had the left stripe. — MickG, Dec 10 '18 at 18:39
@samcarter And the two tricks for the widrth seem to do nothing as they are (in fact, \beamer@sidebarside seems to be undefined). — MickG, Dec 10 '18 at 18:44

samcarter_is_at_topanswers.xyz · Accepted Answer · 2023-03-14T16:16:27.803

Creating a complete theme is exceeding the scope of this website, but here some quick hacks to create something similar:

\documentclass{beamer}
\usepackage{tikz}
\setbeamertemplate{background}
{\includegraphics[width=\paperwidth,height=\paperheight,keepaspectratio]{example-image}}
\setbeamercolor{sidebar}{bg=red!70!black}
\useoutertheme[height=0pt,width=1cm]{sidebar}
\setbeamertemplate{headline}{%
    \begin{tikzpicture}[remember picture, overlay]
        \node[xshift=-0.5cm,yshift=-0.5cm] at (current page.north east) {\tiny\insertframenumber};
    \end{tikzpicture}
}
\title[]{title}
\author[]{author names}
\setbeamertemplate{navigation symbols}{\raisebox{0.2cm}{\includegraphics[width=1cm]{example-image-duck}}\hspace*{0.2cm}}
\begin{document}
\begin{frame}[plain]
    \begin{tikzpicture}[remember picture, overlay]
        \fill[red!70!black] (current page.south west) rectangle ([xshift=2cm]current page.north west);
        \node at ([xshift=2cm,yshift=-1cm]current page.north west) {\includegraphics[width=2cm]{example-image-duck}};
    \end{tikzpicture}
  \titlepage
\end{frame}
\begin{frame}
  normal frame
\end{frame}
\end{document}

user94293 · Answer 2 · 2018-12-10T21:16:32.200

Here is the theme (file beamerthemebicocca.sty):

\NeedsTeXFormat{LaTeX2e}

\mode<presentation>

%--- Font theme (by default, Beamer loads \usefonttheme{default})

%--- Color theme
\usecolortheme[named=red]{structure}
\setbeamercolor{sidebar}{use=local structure,bg=local structure.fg}

%--- Inner theme (by default, Beamer loads \useinnertheme{default})
% Definition of the logo
\setbeamertemplate{logo}{\includegraphics[width=1cm]{example-image}}
% Title page
\addtobeamertemplate{title page}%
  {\thispagestyle{bicocca@navigation@titlepage}}{}
\def\ps@bicocca@navigation@titlepage{%
  \setbeamertemplate{sidebar canvas left}{%
    \usebeamercolor[bg]{local structure}%
    \vrule width .15\paperwidth height \paperheight}
  \setbeamertemplate{sidebar left}{\vskip 1cm%
    \hskip .1\paperwidth\includegraphics[width=2cm]{example-image}}
  \@nameuse{ps@navigation}}
% Background image
\setbeamertemplate{background}{%
  \pgfsetfillopacity{.05} % choose the opacity you wish here
  \includegraphics[height=\paperheight,width=\paperwidth]{example-image}
  \pgfsetfillopacity{1}}

%--- Outer theme (by default, Beamer loads \useoutertheme{default})
% No navigation bar
\beamertemplatenavigationsymbolsempty
% Default side bar (red stripe)
\setbeamersize{sidebar width left=1cm}


\mode<all>

and here is an example using the theme:

\documentclass{beamer}

\usetheme{bicocca}

\title{My Title}
\author{by Me}


\begin{document}

\maketitle

\begin{frame}
  A frame
\end{frame}

\end{document}

You should replace file example-image with your logo and adapt the different sizes.

Very nice answer! I guess you can leave out all the \use...theme{default}, they should be loaded by default — samcarter_is_at_topanswers.xyz, Dec 10 '18 at 20:44

Customizing Bergen beamer theme

2 Answers2