[Tex/LaTex] Beamer style file: footline drops out of slide if used only from slide 2 on

beamerheader-footerpackage-writing

I'm in the process of creating a style file for a Beamer presentation. Most things are straight forward but I have some issues with the footline. In particular, I don't want a footline on the title page but it should appear in all following slides. I follow basically the approach in: Creating a custom Beamer theme. Need to remove the footline for the title page only.

However, I get the issue that my footline is not correctly aligned with the bottom of the slide. It actually drops out below and only roughly a third is still visible. I found a possible solution in How to remove footline on the title page of beamer slides.
But here I need to change the actual beamer slides tex file which I want to avoid if possible. Everything should be defined in my *.sty file.

I tried to figure out the reason of this issue with no luck. Can anybody help me? Thanks in advance for any tips.

I tried to compile a (not so) minimal working example to show the effect.
At the top I define my custom footline 'Ffootline' and there are two versions, the first is working by showing the footline on all slides (commented out in MWE). The second shows this partly covered footline.

\documentclass[11pt]{beamer}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% DEFINE CUSTOM FOOTLINE
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\newcommand{\Ffootline}{%
  \insertsection % The left end of the footline
  \hfill
  \insertfooter % The center
  \hfill
  \insertframenumber/\inserttotalframenumber
} % And the right end

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%% VERSION I: working
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% \setbeamertemplate{footline}{%
%   \usebeamerfont{structure}
%   \begin{beamercolorbox}[wd=\paperwidth,ht=2.25ex,dp=1ex]{footlinecolor}%
%     \Tiny\hspace*{4mm} \Ffootline \hspace{4mm}
%   \end{beamercolorbox}
% }
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%% VERSION I: end
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%% VERSION II: NOT working
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% This removes the footline from the title page but then it is too low on the others
\setbeamertemplate{footline}
{%
  \ifnum \thepage=1 
  {
    % Don't add a Footline
  } 
  \else 
  {
    \begin{beamercolorbox}[wd=\paperwidth,ht=2.25ex,dp=1ex]{footlinecolor}%
      \Tiny\hspace*{4mm} \Ffootline \hspace{4mm}
    \end{beamercolorbox}
  }
  \fi
}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%% VERSION II: END
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%%% STUFF sucht that MEW compiles:
\beamertemplatenavigationsymbolsempty % Supress navigation baar
% Slides Content
\title{Title Page Title}
\author{Main author,}
\institute{Our Lab}
\newcommand{\insertfooter}{Custom Footline Text - bla bla bla}
\begin{document}
%--------------
\begin{frame}
  \titlepage
\end{frame}
%--------------
\section*{Introduction}
%--------------
\begin{frame}
  \frametitle{My Project}
  Some content
\end{frame}
%--------------
\end{document}

Best Answer

The first solution I can think is using [plain] template for title page. This template suppresses headers and footers, therefore how footline is defined doesn't matter. xlr8t doesn't explain if this option has been considered.

Another solution which works in this case consists in inserting an empty beamercolorbox for title page:

\documentclass[11pt]{beamer}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% DEFINE CUSTOM FOOTLINE
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\newcommand{\Ffootline}{%
  \insertsection % The left end of the footline
  \hfill
  \insertfooter % The center
  \hfill
  \insertframenumber/\inserttotalframenumber
} % And the right end

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%% VERSION I: working
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% \setbeamertemplate{footline}{%
%   \usebeamerfont{structure}
%   \begin{beamercolorbox}[wd=\paperwidth,ht=2.25ex,dp=1ex]{footlinecolor}%
%     \Tiny\hspace*{4mm} \Ffootline \hspace{4mm}
%   \end{beamercolorbox}
% }
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%% VERSION I: end
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%% VERSION II: NOT working   %<--------- Now it works
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% This removes the footline from the title page but then it is too low on the others
\setbeamertemplate{footline}{%
\ifnum\thepage=1
    \begin{beamercolorbox}[wd=\paperwidth,ht=2.25ex,dp=1ex]{footlinecolor}
    \end{beamercolorbox}
\else
    \begin{beamercolorbox}[wd=\paperwidth,ht=2.25ex,dp=1ex]{footlinecolor}%
        \Tiny\hspace*{4mm} \Ffootline \hspace*{4mm}
    \end{beamercolorbox}
\fi}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%% VERSION II: END
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%%% STUFF sucht that MEW compiles:
\beamertemplatenavigationsymbolsempty % Supress navigation baar
% Slides Content
\title{Title Page Title}
\author{Main author,}
\institute{Our Lab}
\newcommand{\insertfooter}{Custom Footline Text - bla bla bla}
\begin{document}
%--------------
\begin{frame}%[plain]  %<------[plain] could be another solution
  \titlepage
\end{frame}
%--------------
\section*{Introduction}
%--------------
\begin{frame}
  \frametitle{My Project}
  Some content
\end{frame}
%--------------
\begin{frame}
  \frametitle{My Project}
  Some content
\end{frame}
%--------------
\end{document}

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Related Solutions

[Tex/LaTex] latex beamer appendix numbering

This is so, because \insertsectionnumber is defined as (in the file beamerbasesection.sty)

\def\insertsectionnumber{\@arabic\c@section}

And \appendix doesn't change this;

\newcommand<>\appendix{%
  \only#1{\part{\appendixname}
  \addtocontents{nav}{\protect\headcommand{\protect\beamer@appendixpages{\the\c@page}}}}}

so the counter will appear using arabic representation.

You can change this, redefining \insertsectionnumber in the proper location:

\setcounter{section}{0}
\renewcommand\insertsectionnumber{\Alph{section}}

Perhaps you want to let \appendix do this change:

\documentclass{beamer}

\makeatletter
\renewcommand<>\appendix{%
\setcounter{section}{0}%
\renewcommand\insertsectionnumber{\Alph{section}}%
  \only#1{\part{\appendixname}
  \addtocontents{nav}{\protect\headcommand{\protect\beamer@appendixpages{\the\c@page}}}}}
\makeatother

\begin{document}

\section{test1}
\begin{frame}{\insertsectionnumber.~\insertsection}
 bal bla
\end{frame}

\appendix

\section{test2}
\begin{frame}{\insertsectionnumber.~\insertsection}
 bla bla
\end{frame}

\end{document}

[Tex/LaTex] Creating a custom Beamer theme. Need to remove the footline for the title page only

If a presentation using your theme always has a title page, which is usually the first page, then one can define the template for footline to be different for the first page.

To implement this, one can use the \ifnum expression:

\defbeamertemplate*{footline}{my footline}
{
    \ifnum \insertpagenumber=1
      <definition of footline style on page 1>
    \else
      <definition of footline style on other pages>
    \fi
}

This will define a template for footline, such that page 1 has a potentially different footline style from other pages. \insertpagenumber inserts the current page number into the template, which is checked by \ifnum to see if it's page 1. Then the appropriate clause of the "then-else" statement will be executed depending the truth value of the expression "the current page number is 1".

MWE

\documentclass{beamer}
\usetheme{Madrid}

\defbeamertemplate*{footline}{my footline}
{
    \ifnum \insertpagenumber=1
      \leavevmode%
      \hbox{%
      \begin{beamercolorbox}[wd=\paperwidth,ht=2.25ex,dp=1ex,center]{}%
        % empty environment to raise height
      \end{beamercolorbox}}%
      \vskip0pt%
    \else
      \leavevmode%
      \hbox{%
      \begin{beamercolorbox}[wd=\paperwidth,ht=2.25ex,dp=1ex,center]{title in head/foot}%
        \usebeamerfont{title in head/foot}\insertshorttitle
      \end{beamercolorbox}}%
      \vskip0pt%
    \fi
}

\setbeamertemplate{footline}[my footline]

\title{Some Title}

\begin{document}
\begin{frame}
\titlepage
\end{frame}

\begin{frame}{Frame 1}
This is a normal frame.
\end{frame}
\end{document}

Output