beamerouterthemeage.sty

% See the file LICENSE.md for more details.

% tikz for drawing the frame title
\RequirePackage{tikz}

% optionally remove headline
\newif\ifbeamer@noheadline
\DeclareOptionBeamer{noheadline}{\beamer@noheadlinetrue}
\ProcessOptionsBeamer

% re-define the logo command
\renewcommand{\logo}[1]{\def\beamer@logo{#1}}
% Set the default value
\logo{}

\mode<presentation>

\beamer@compresstrue

\AtBeginDocument{
  {
    \ifbeamer@noheadline%
    \else%
      \usebeamerfont*{headline}
      \colorlet{global.bg}{bg}
      \usebeamercolor{section in head/foot}
      \usebeamercolor{frametitle}

      \pgfdeclareverticalshading{beamer@barshade}{\the\paperwidth}{%
        color(0ex)=(section in head/foot.bg);%
        color(6ex)=(section in head/foot.bg)%
      }
      \pgfdeclareverticalshading{beamer@aboveframetitle}{\the\paperwidth}{%
        color(0ex)=(frametitle.bg);%
        color(1ex)=(frametitle.bg);%
        color(1ex)=(section in head/foot.bg)
      } 
    
      \begingroup
        \selectcolormodel{gray}
        \pgfdeclareverticalshading{beamer@belowframetitle}{\the\paperwidth}{%
          color(0ex)=(pgftransparent!100);%
          color(1ex)=(pgftransparent!0)
        }
        \pgfdeclarefading{beamer@belowframetitlemask}{\pgfuseshading{beamer@belowframetitle}}
      \endgroup
    \fi%
  }
}

% Navigation symbols

\defbeamertemplate*{navigation symbols}{}


% footline and headline

\setbeamercolor*{author in head/foot}{parent=palette primary,bg=secondary}
\setbeamercolor*{date in head/foot}{parent=palette primary,bg=secondary}
\setbeamercolor*{title in head/foot}{parent=palette secondary,bg=secondary}
\setbeamercolor*{page number in head/foot}{parent=palette primary,bg=secondary}

\setbeamercolor*{section in head/foot}{parent=palette tertiary,bg=k50}
\setbeamercolor*{subsection in head/foot}{parent=palette primary}

\setbeamertemplate{page number in head/foot}[totalframenumber]%

\defbeamertemplate*{footline}{age theme}
{%
  \ifnum\theframenumber=1%
  \else%
    \begin{beamercolorbox}[colsep=1pt]{upper separation line foot}
    \end{beamercolorbox}
    \leavevmode%
    \begin{beamercolorbox}[wd=0.3\paperwidth,ht=2.25ex,dp=1ex,left,leftskip=1ex]{author in head/foot}%
      \usebeamerfont{author in head/foot}\insertshortauthor~|~%
      \usebeamerfont{date in head/foot}\insertshortdate{}%
    \end{beamercolorbox}%
    \begin{beamercolorbox}[wd=0.4\paperwidth,ht=2.25ex,dp=1ex,center]{title in head/foot}%
      \usebeamerfont{title in head/foot}\insertshorttitle%
    \end{beamercolorbox}%
    \begin{beamercolorbox}[wd=0.3\paperwidth,ht=2.25ex,dp=1ex,right,rightskip=1ex]{page number in head/foot}%
      \usebeamercolor[fg]{page number in head/foot}%
      \usebeamerfont{page number in head/foot}%
      \usebeamertemplate{page number in head/foot}%
    \end{beamercolorbox}%
  \fi%
  \vskip0pt%
}%

\defbeamertemplate*{headline}{age theme}
{%
  \ifbeamer@noheadline%
  \else\ifnum\theframenumber=1%
  \else%
    \pgfuseshading{beamer@barshade}%
    \vskip-0.05ex%
    \begin{beamercolorbox}[wd=\paperwidth,ht=1ex,dp=0ex]{empty}
    \begin{pgfpicture}
      \begin{pgfscope}%
        \pgfsetfillcolor{section in head/foot.bg}%
        \pgfpathrectangle{\pgfpoint{-.5\paperwidth}{-0.5ex}}{\pgfpoint{\paperwidth}{1ex}}%
        \pgfsetfading{beamer@belowframetitlemask}{}%
        \pgfusepath{fill}%
      \end{pgfscope}%
    \end{pgfpicture}%
    \end{beamercolorbox}%
    \vskip-6.85ex%
    \begin{beamercolorbox}[ignorebg,ht=2.25ex,dp=2.5ex]{section in head/foot}
      \insertnavigation{\paperwidth}
    \end{beamercolorbox}%
  \fi\fi%
  \vskip0pt%
}%

% Frame title

\defbeamertemplate*{frametitle}{age theme}
{%
  \vskip-1pt%
  \hbox{\leavevmode
    \hskip-\Gm@lmargin%
    \hbox{%
      \usebeamerfont{frametitle}%
      \begin{tikzpicture}%
        % Draw the background rectangle
        \fill[k20] (current page.north west) rectangle ([shift={(0,-3.0ex)}]current page.north east);%
        % Manually specify the bounding box
        \useasboundingbox (current page.north west) rectangle ([shift={(0,-3.0ex)}]current page.north east);%
        % Draw hysteresis
        \draw[line width=2pt, color=primary] ([shift={(0.2\paperwidth,0)}]current page.north west) -- ([shift={(0.2\paperwidth,-3.0ex)}]current page.north west);%
        \draw[line width=2pt, color=primary] ([shift={(0.9\paperwidth,0)}]current page.north west) -- ([shift={(0.9\paperwidth,-3.0ex)}]current page.north west);%
        \draw[line width=2pt, color=primary] ([shift={(0,-3.0ex+1pt)}]current page.north west) -- ([shift={(0.9\paperwidth,-3.0ex+1pt)}]current page.north west);%
        \draw[line width=2pt, color=primary] ([shift={(0.2\paperwidth,-1pt)}]current page.north west) -- ([shift={(\paperwidth,-1pt)}]current page.north west);%
        % Add text
        \node[anchor=center, align=center, primary] at ([xshift=0.55\paperwidth,yshift=-1.5ex]current page.north west) {\expandafter\ifblank\expandafter{\beamer@frametitle}{\insertshorttitle}{\beamer@frametitle}};%
        % Add logos
        \node[anchor=center, align=center] at ([xshift=0.1\paperwidth,yshift=-1.5ex+1pt]current page.north west) {\includegraphics[width=0.19\paperwidth]{logos/unikassel.pdf}};%
        \node[anchor=center, align=center] at ([xshift=0.95\paperwidth,yshift=-1.5ex-1pt]current page.north west) {\beamer@logo};%
      \end{tikzpicture}%
    }%
  }
  \ifdefempty{\insertframesubtitle}%
  {}%
  {% else
    \hbox{\leavevmode%
    \usebeamerfont{framesubtitle}%
    \begin{beamercolorbox}[wd=\textwidth,ht=2.25ex,dp=1ex,left]{framesubtitle}%
      \usebeamerfont{framesubtitle}\insertframesubtitle%
    \end{beamercolorbox}}%
  }%
  \vskip0pt%
}


\mode
<all>