[Tex/LaTex] footer width and color

beamerheader-footer

I have a further problem with my beamer style.

So basically, I am trying to include a gray footer, where I include name, short title and frame numbers.

Therefore I split the footer in two parts using the following:

\makeatother
\setbeamertemplate{footline}
{
  \leavevmode
  \hbox{  \begin{beamercolorbox}[wd=.4\paperwidth,ht=2.25ex,dp=1ex,center]{author in head/foot}    \usebeamerfont{author in head/foot}\insertshortauthor
  \end{beamercolorbox}  \begin{beamercolorbox}[wd=.6\paperwidth,ht=2.25ex,dp=1ex,right]{title in head/foot}    \usebeamerfont{title in head/foot}\insertshorttitle\hspace*{18em}
    \insertframenumber{} / \inserttotalframenumber\hspace*{5ex}
  \end{beamercolorbox}}
  \vskip0pt
}
\makeatletter
\setbeamercolor{author in head/foot}{use=structure,fg=red,bg=gray!10!white}
\setbeamercolor{title in head/foot}{use=structure,fg=red,bg=gray!10!white}

The result is as follows:
enter image description here

Basically, I cannot extend the two parts of the footer to cover the white and red indicated by the two arrows.

I am using scientific workplace with Singapore theme. I post the entire preamble of my file in case it is useful, although it is a bit messy at the moment.

\newenvironment{stepenumerate}{\begin{enumerate}[<+->]}{\end{enumerate}}
\newenvironment{stepitemize}{\begin{itemize}[<+->]}{\end{itemize} }
\newenvironment{stepenumeratewithalert}{\begin{enumerate}[<+-| alert@+>]}{\end{enumerate}}
\newenvironment{stepitemizewithalert}{\begin{itemize}[<+-| alert@+>]}{\end{itemize} }
\usetheme{Singapore}
\setbeamertemplate{itemize item}[$ball$]
\setbeamertemplate{itemize subitem}{$-$}
\setbeamertemplate{itemize subsubitem}{$*$}
\definecolor{unime}{rgb}{.93,.9,.0}
\usecolortheme[named=unime]{structure}
\setbeamerfont{footnote}{size=\tiny}
\setbeamertemplate{blocks}[rounded][shadow=true]
\setbeamercolor{block title}{use=structure,fg=white,bg=lside}
\setbeamercolor{block body}{use=structure,bg=white}
\setbeamercolor{itemize item}{fg=lside} 
\setbeamercolor{itemize subitem}{fg=lside} 
\setbeamercolor{itemize subsubitem}{fg=lside}
\definecolor{lside}{rgb}{.7,.0,.0}
\definecolor{leftFootlineColor}{rgb}{.54,.17, .89}
\useoutertheme[width=1.3cm,height=35pt,left]{sidebar}
\setbeamercolor{frametitle}{bg=unime}
\setbeamercolor{section in head/foot}{bg=leftFootlineColor}
\setbeamercolor{title}{use=structure,fg=black}
\logo {\includegraphics[height=1.3cm,width=1.3cm]{uni}}
\setbeamertemplate{sidebar canvas left} [vertical shading]
[top=lside, bottom=lside]
\setbeamertemplate{navigation symbols}{}
\DeclareGraphicsExtensions{.pdf,.png,.jpg}
\graphicspath{{c:/}}
\makeatletter
\setlength{\beamer@headheight}{1.3cm}
\makeatother
\newlength\sidebarwd
\setlength\sidebarwd{1.3cm}
\setbeamersize{sidebar width left=\sidebarwd}
\makeatletter
\setlength\beamer@sidebarwidth{\sidebarwd}
\makeatother
\setbeamercolor{page number in head/foot}{fg=lside}
\makeatletter 
  \setbeamertemplate{sidebar \beamer@sidebarside}
  {
    \beamer@tempdim=\beamer@sidebarwidth
    \advance\beamer@tempdim by -6pt
    \insertverticalnavigation{\beamer@sidebarwidth}
    \vfill
    \ifx\beamer@sidebarside\beamer@lefttext
    \else
      \usebeamercolor{normal text}
      \llap{\usebeamertemplate***{navigation symbols}\hskip0.1cm}
      \vskip2pt
    \fi
  }
\makeatother
\setbeamertemplate{footline}
{
  \leavevmode
  \hbox{  \begin{beamercolorbox}[wd=.4\paperwidth,ht=2.25ex,dp=1ex,center]{author in head/foot}    \usebeamerfont{author in head/foot}\insertshortauthor
  \end{beamercolorbox}  \begin{beamercolorbox}[wd=.6\paperwidth,ht=2.25ex,dp=1ex,right]{title in head/foot}    \usebeamerfont{title in head/foot}\insertshorttitle\hspace*{18em}
    \insertframenumber{} / \inserttotalframenumber\hspace*{5ex}
  \end{beamercolorbox}}
  \vskip0pt
}
\makeatletter
\setbeamercolor{author in head/foot}{use=structure,fg=red,bg=gray!10!white}
\setbeamercolor{title in head/foot}{use=structure,fg=red,bg=gray!10!white}
\input{tcilatex}

Does anyone have an idea?

Thanks

Dario

Best Answer

You inserted some blank spaces before the 1st box and also between the 1st and 2nd boxes.

If you remove them inserting comment sign % at the end of line you can solve the problem.

With % at the end the code in the next line is executed exactly after the previous one.

\setbeamertemplate{footline}
{%
\leavevmode
\hbox{%
\begin{beamercolorbox}[wd=.4\paperwidth,ht=2.25ex,dp=1ex,center]%
  {author in head/foot}%
  \usebeamerfont{author in head/foot}%
  \insertshortauthor%
\end{beamercolorbox}%               <-- no blank space here
\begin{beamercolorbox}[wd=.6\paperwidth,ht=2.25ex,dp=1ex,right]%
  {title in head/foot}%
  \usebeamerfont{title in head/foot}%
  \insertshorttitle%
  \hspace*{18em}%
  \insertframenumber\ / \inserttotalframenumber%
  \hspace*{5ex}
\end{beamercolorbox}%
}
\vskip0pt
}

enter image description here

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