beamerthemechalmers.sty

% Beamer theme for Chalmers university of technology
% Written by Mikael Öhman <mikael.ohman@chalmers.se>
% Released under public domain.
% Use with beamer for pdflatex or lualatex:
%  \usetheme{chalmers}

\mode<presentation>

% Option to place a figure in the title page. Supply the filename.
\DeclareOptionBeamer{titleflower}[true]{\def\beamer@titleflower{#1}}

\ProcessOptionsBeamer

\RequirePackage{tikz}

\newlength{\headerheight}
\newlength{\footerheight}
\newlength{\titlepageheight}
\newlength{\footertextwidth}
\setlength{\headerheight}{0.04\paperheight}
\setlength{\footerheight}{0.04\paperheight}
\setlength{\titlepageheight}{0.4\paperheight}
\setlength{\footertextwidth}{0.5\paperwidth}

% New command for manually inserting the footer. Default is the authors.
\newcommand{\footer}[1]{\def\insertfooter{#1}}
\footer{\insertshortauthor}

% New command for inserting a logo on the title page. Default is no logo.
\newcommand{\titlepagelogo}[1]{\def\inserttitlepagelogo{#1}}
\titlepagelogo{}

% Convenience, just set the filename
\newcommand{\titlepagelogofile}[1]{\def\inserttitlepagelogofile{#1}}
\titlepagelogofile{}

% Convenience, just set the filename
\newcommand{\titlepageextra}[1]{\def\inserttitlepageextra{#1}}
\titlepageextra{}

% Chalmers recommended fonts for presentations; Times New Roman for titles, Arial/Verdana for rest.
% But, it looks very bad.
%\setbeamerfont{frametitle}{family=\rmfamily}

% Chalmers default colors (+ black and white)
\definecolor{chalmersblue}{rgb}{0,0.2,0.53}
\definecolor{chalmersgrey}{rgb}{0.8,0.8,0.8}
\definecolor{chalmerssilver}{rgb}{0.8,0.8,0.8}

\setbeamercolor{palette primary}{fg=white,bg=chalmersblue}
\setbeamercolor{palette secondary}{fg=white,bg=black}
\setbeamercolor{palette third}{fg=black,bg=chalmersgrey}

\setbeamercolor*{structure}{fg=chalmersgrey!50!black, bg=white}
\setbeamercolor{alerted text}{fg=chalmersblue}

\setbeamercolor*{head}{parent=palette secondary}
\setbeamercolor*{foot}{parent=palette primary}
\setbeamercolor*{title page header}{parent=palette primary}
\setbeamercolor*{frametitle}{parent=palette primary}
\setbeamercolor*{title page header}{fg=white}

%\setbeamercolor*{alert text}{fg=chalmersblue}

% Items round and grey;
%\setbeamercolor*{enumerate item}{fg=chalmersblue} % Just won't do anything-
%\setbeamercolor*{itemize item}{fg=chalmersgrey}
\setbeamertemplate{items}[circle]

% Turning off navigation symbols
\usenavigationsymbolstemplate{}

% Spacing is up to the writer to decide. These are set a bit tighter than default.
% \setlength{\intextsep}{5pt}
% \setlength{\abovecaptionskip}{3pt}
% \setlength{\belowcaptionskip}{0pt}
% \setlength{\abovedisplayskip}{3pt}
% \setlength{\belowdisplayskip}{3pt}
% \setlength{\itemsep}{0pt}
% \setbeamersize{text margin left=1em,text margin right=1em}

\defbeamertemplate*{title page}{chalmers}[1][]
{
 \begin{tikzpicture}[remember picture, overlay]
  \node at (current page.north west) {
    \begin{tikzpicture}[remember picture, overlay]
      \usebeamerfont{headline};
      \fill[black] (0,0) rectangle +(\paperwidth,-\headerheight-1mm); % -1mm overlap
      \node[right, white,overlay] at (0,-0.5\headerheight) {\chalmerslogo{white}{0.5\headerheight}};
      \shade[bottom color=chalmersblue!60,top color=chalmersblue!100] (0,-\headerheight) rectangle (\paperwidth,-\titlepageheight);
      % Conditionally draw the 'flower'
      \def\beamer@truetext{true}%
      \ifx\beamer@titleflower\beamer@truetext%
        \node[above right] at (0,-1.15\titlepageheight) {\chalmersflower{white}{\titlepageheight}{70}};
        \node at (0.6\paperwidth, -0.7\titlepageheight) {
          \begin{beamercolorbox}[wd=0.6\paperwidth,center,#1]{title page header}
            \usebeamerfont{title}\inserttitle\par%
            \ifx\insertsubtitle\@empty\else%
              \vskip0.25em%
              {\usebeamerfont{subtitle}\insertsubtitle\par}%
            \fi%
            \vspace{.125\paperheight}%
          \end{beamercolorbox}
        };
      \else%
        \node at (0.5\paperwidth, -0.7\titlepageheight) {
        \begin{beamercolorbox}[wd=0.8\paperwidth,center,#1]{title page header}
          \usebeamerfont{title}\inserttitle\par%
          \ifx\insertsubtitle\@empty%
          \else%
            \vskip0.25em%
            {\usebeamerfont{subtitle}\insertsubtitle\par}%
          \fi%
        \vspace{.125\paperheight}%
        \end{beamercolorbox}
        };
      \fi

    \end{tikzpicture}
  };
  \end{tikzpicture}
  \vskip 0.4\paperheight

  \begin{columns}
    \ifx\inserttitlepagelogofile\@empty\else
      \titlepagelogo{\includegraphics[keepaspectratio,height=.5\textheight,width=0.5\textwidth]{\inserttitlepagelogofile}}
    \fi
    \ifx\inserttitlepagelogo\@empty%
      \column{\textwidth}
    \else
      \column{.5\textwidth}
      % Logo.
      \begin{centering}
        \vbox{}\vfill
        \inserttitlepagelogo
        \vfill
      \end{centering}
      \column{.5\textwidth}
    \fi
    % Authors, institute and date
    \vskip1em\par
    \begin{beamercolorbox}[sep=8pt,center,#1]{author}
	\usebeamerfont{author}{\def\beamer@andtitle{\\}\insertauthor} % Forces linebreaks
    \end{beamercolorbox}
    \begin{beamercolorbox}[sep=8pt,center,#1]{institute}
    \usebeamerfont{institute}\insertinstitute
    \end{beamercolorbox}
    \begin{beamercolorbox}[sep=8pt,center,#1]{date}
    \usebeamerfont{date}
    \ifx\inserttitlepageextra\@empty\else\inserttitlepageextra\\\fi
    \insertdate
    \end{beamercolorbox}\vskip0.5em
    %{\usebeamercolor[fg]{titlegraphic}\inserttitlegraphic\par}
  \end{columns}
}

\defbeamertemplate*{footline}{chalmers theme}{
 \begin{tikzpicture}
  \fill[chalmersgrey] (0,0) rectangle (\paperwidth,\footerheight);
  % Section hierarchy
  \node[right] at (0,0.5\footerheight) {\usebeamerfont{foot}\insertsectionhead\ 
    \ifx\insertsubsectionhead\@empty\else---\ \insertsubsectionhead\fi%
    \ifx\insertsubsubsectionhead\@empty\else---\ \insertsubsubsectionhead\fi};
  % Right side footer.
  \node[right] at (\footertextwidth,0.5\footerheight) {\usebeamerfont{foot}\insertfooter};
  % frame/total frames
  \node[left] at (\paperwidth,0.5\footerheight) {\usebeamerfont{foot}\insertframenumber/\inserttotalframenumber};
 \end{tikzpicture}
}

% This as a very thin overlay (0.1mm) to avoid rendering errors.
\defbeamertemplate*{headline}{chalmers theme}{%
 \begin{tikzpicture}
  \fill[black] (0,0) rectangle (\paperwidth,\headerheight+0.1mm);
  \node[right,white] at (0,0.5\headerheight+0.1mm) {\chalmerslogo{white}{0.5\headerheight}};
 \end{tikzpicture}\vskip -0.1mm
}

\defbeamertemplate*{frametitle}{chalmers theme}
{%
  \nointerlineskip%
  \hbox{\leavevmode
    %\advance\beamer@leftmargin by -12bp%
    %\advance\beamer@rightmargin by -12bp%
    %\beamer@tempdim=\textwidth%
    %\advance\beamer@tempdim by \beamer@leftmargin%
    %\advance\beamer@tempdim by \beamer@rightmargin%
    \hskip-\Gm@lmargin%
    \hbox{%
      \setbox\beamer@tempbox=\hbox{\begin{minipage}[b]{\paperwidth}%
          \vbox{}\vskip-.75ex%
          \leftskip0.3cm%
          \rightskip0.3cm plus1fil\leavevmode
          \insertframetitle%
          \ifx\insertframesubtitle\@empty%
            \strut\par%
          \else
            \par{\usebeamerfont*{framesubtitle}{\usebeamercolor[fg]{framesubtitle}\insertframesubtitle}\strut\par}%
          \fi%
          \nointerlineskip
          \vbox{}%
        \end{minipage}}% Stores a temporary box
      \beamer@tempdim=\ht\beamer@tempbox% % Height of box
      \advance\beamer@tempdim by 2pt%
      \begin{tikzpicture}
       \clip (0,\titlepageheight-\beamer@tempdim) rectangle +(\paperwidth,\beamer@tempdim);
       %\clip (0,0) rectangle (\paperwidth,\beamer@tempdim);
       %\shade[bottom color=structure.bg!70,top color=structure.bg!100] (0,0) rectangle (\paperwidth,-\titlepageheight);

       %\fill[structure.bg] (0,0) rectangle (\paperwidth,\beamer@tempdim);
       \shade[bottom color=frametitle.bg!70,top color=frametitle.bg!100] (0,0) rectangle (\paperwidth,\titlepageheight);
       %\node[right] at (0,0.5\beamer@tempdim) { \insertframetitle\  };
      \end{tikzpicture}
      \hskip-\paperwidth%
      \box\beamer@tempbox% 
    }%
    \hskip-\Gm@rmargin%
  }%
}

% CHALMERS logo below. Note! It is trademarked!
%\newcommand{\chalmerslogo}{\input{figures/CHALMERS.tikz}} % Seperate file? More convenient here.
\newcommand{\chalmerslogo}[2]{
\resizebox{!}{#2}{
\begin{tikzpicture}[fill=#1]% This is 11.994 in width, 1.341 in height
% C
\fill (1.481,0.488)
 .. controls (1.385,0.138) and (1.046,0.027) .. (0.742,0.027)
 .. controls (0.304,0.027) and (0,0.256) .. (0,0.687)
 .. controls (0,1.152) and (0.37,1.34) .. (0.76,1.34)
 .. controls (0.901,1.34) and (1.273,1.307) .. (1.437,1.011)
 -- (1.128,0.914)
 .. controls (1.095,0.966) and (0.997,1.102) .. (0.758,1.102)
 .. controls (0.478,1.102) and (0.321,0.919) .. (0.321,0.683)
 .. controls (0.321,0.414) and (0.535,0.271) .. (0.769,0.271)
 .. controls (1.036,0.271) and (1.116,0.411) .. (1.156,0.486)
 -- cycle;

% H
\fill (1.616,1.302) -- (1.925,1.302) -- (1.925,0.827) -- (2.656,0.827) -- (2.656,1.302) -- (2.965,1.302)
 -- (2.965,0.069) -- (2.656,0.069) -- (2.656,0.598) -- (1.925,0.598) -- (1.925,0.069) -- (1.616,0.069)
 -- cycle;

%A
\fill (3.707,1.302) -- (4.041,1.302) -- (4.637,0.069) -- (4.291,0.069) -- (4.168,0.338) -- (3.568,0.338)
 -- (3.449,0.069) -- (3.112,0.069) -- (3.707,1.302) -- cycle
 (3.903,0.923)
 .. controls (3.889,0.955) and (3.876,0.985) .. (3.871,1.021)
 .. controls (3.866,0.986) and (3.851,0.954) .. (3.837,0.922)
 -- (3.668,0.556) -- (4.066,0.556) -- cycle;

% L
\fill (4.796,1.302) -- (5.105,1.302) -- (5.105,0.296) -- (5.728,0.296) -- (5.728,0.069) -- (4.796,0.069) -- cycle;

% M
\fill (5.914,1.302) -- (6.359,1.302) -- (6.687,0.532)
 .. controls (6.721,0.451) and (6.73,0.418) .. (6.743,0.364)
 .. controls (6.756,0.418) and (6.767,0.451) .. (6.8,0.532)
 -- (7.122,1.302) -- (7.564,1.302) -- (7.564,0.069) -- (7.272,0.069) -- (7.272,0.937)
 .. controls (7.272,0.984) and (7.279,1.01) .. (7.285,1.047)
 .. controls (7.272,1.01) and (7.263,0.984) .. (7.243,0.937)
 -- (6.881,0.069) -- (6.6,0.069) -- (6.231,0.937)
 .. controls (6.211,0.984) and (6.205,1.01) .. (6.195,1.047)
 .. controls (6.198,1.01) and (6.205,0.984) .. (6.205,0.937)
 -- (6.205,0.069) -- (5.914,0.069) -- cycle;

% E
\fill (7.85,1.302) -- (8.999,1.302) -- (8.999,1.080) -- (8.159,1.080) -- (8.159,0.802) -- (8.899,0.802)
 -- (8.899,0.584) -- (8.159,0.584) -- (8.159,0.289) -- (9.034,0.289) -- (9.034,0.069) -- (7.850,0.069) -- cycle;

% R
\fill (9.266,1.301) -- (10.128,1.301)
 .. controls (10.219,1.301) and (10.566,1.290) .. (10.566,0.933)
 .. controls (10.566,0.720) and (10.439,0.612) .. (10.246,0.583)
 -- (10.620,0.068) -- (10.265,0.068) -- ( 9.927,0.564) -- ( 9.575,0.564) -- ( 9.575,0.068)
 -- ( 9.266,0.068) -- ( 9.266,1.301) -- cycle
 (9.576,0.782) -- (10.068,0.782)
 .. controls (10.134,0.782) and (10.253,0.791) .. (10.253,0.929)
 .. controls (10.253,1.064) and (10.164,1.085) .. (10.054,1.085)
 -- (9.576,1.085) -- cycle;

% S
\fill (10.956,0.445)
 .. controls (11.028,0.297) and (11.205,0.255) .. (11.373,0.258)
 .. controls (11.448,0.259) and (11.684,0.276) .. (11.681,0.426)
 .. controls (11.680,0.515) and (11.593,0.534) .. (11.527,0.545)
 .. controls (11.476,0.554) and (11.222,0.589) .. (11.164,0.599)
 .. controls (11.051,0.617) and (10.758,0.667) .. (10.758,0.946)
 .. controls (10.758,1.249) and (11.080,1.340) .. (11.326,1.340)
 .. controls (11.612,1.340) and (11.831,1.285) .. (11.981,1.056)
 -- (11.689,0.978)
 .. controls (11.620,1.103) and (11.462,1.121) .. (11.330,1.120)
 .. controls (11.194,1.120) and (11.055,1.089) .. (11.057,0.972)
 .. controls (11.058,0.892) and (11.130,0.872) .. (11.223,0.853)
 .. controls (11.274,0.843) and (11.526,0.805) .. (11.584,0.795)
 .. controls (11.727,0.770) and (11.971,0.723) .. (11.976,0.452)
 .. controls (11.983,0.056) and (11.539,0.033) .. (11.358,0.031)
 .. controls (11.156,0.028) and (10.840,0.057) .. (10.676,0.366)
 -- cycle;
\end{tikzpicture}
}
}

\newcommand{\chalmersflower}[3]{
\resizebox{!}{#2}{
\begin{tikzpicture}[rotate=#3]
\fill[#1] (3.154,2.733)
 .. controls (3.141,2.733) and (3.118,2.735) .. (3.114,2.74)
 .. controls (3.108,2.749) and (3.097,2.761) .. (3.089,2.77)
 .. controls (3.081,2.78) and (3.072,2.803) .. (3.071,2.81)
 .. controls (3.067,2.81) and (3.06,2.797) .. (3.057,2.786)
 .. controls (3.053,2.774) and (3.045,2.762) .. (3.029,2.745)
 .. controls (3.012,2.726) and (3.014,2.706) .. (3.004,2.687)
 .. controls (2.993,2.669) and (2.986,2.642) .. (2.976,2.626)
 .. controls (2.965,2.61) and (2.959,2.581) .. (2.957,2.571)
 .. controls (2.956,2.561) and (2.941,2.52) .. (2.927,2.507)
 .. controls (2.918,2.498) and (2.908,2.491) .. (2.899,2.491)
 .. controls (2.895,2.491) and (2.89,2.493) .. (2.886,2.496)
 .. controls (2.871,2.506) and (2.843,2.53) .. (2.833,2.539)
 .. controls (2.822,2.549) and (2.81,2.562) .. (2.804,2.572)
 .. controls (2.797,2.582) and (2.783,2.584) .. (2.771,2.593)
 .. controls (2.759,2.602) and (2.743,2.619) .. (2.731,2.629)
 .. controls (2.719,2.64) and (2.707,2.649) .. (2.698,2.651)
 .. controls (2.697,2.651) and (2.696,2.652) .. (2.695,2.652)
 .. controls (3.087,2.89) and (3.477,2.99) .. (3.814,2.993)
 .. controls (4.353,3) and (4.818,2.745) .. (4.798,2.18)
 .. controls (4.846,2.192) and (5.111,2.46) .. (4.838,2.762)
 .. controls (4.659,2.961) and (4.343,3.073) .. (3.965,3.073)
 .. controls (3.439,3.073) and (2.793,2.856) .. (2.226,2.353)
 .. controls (2.911,3.081) and (3.811,3.429) .. (4.504,3.429)
 .. controls (4.852,3.429) and (5.149,3.341) .. (5.338,3.169)
 .. controls (5.902,2.654) and (5.555,2.045) .. (5.36,1.832)
 .. controls (5.163,1.616) and (4.946,1.677) .. (4.919,1.656)
 .. controls (4.903,1.644) and (4.9,1.627) .. (4.899,1.61)
 .. controls (4.899,1.599) and (4.921,1.592) .. (4.957,1.592)
 .. controls (5.056,1.592) and (5.264,1.646) .. (5.398,1.793)
 .. controls (5.58,1.992) and (5.979,2.639) .. (5.365,3.199)
 .. controls (5.134,3.409) and (4.782,3.546) .. (4.36,3.546)
 .. controls (3.721,3.546) and (2.91,3.22) .. (2.133,2.369)
 .. controls (2.133,2.38) and (2.128,2.401) .. (2.125,2.413)
 .. controls (2.093,2.556) and (1.981,2.781) .. (1.783,2.883)
 .. controls (1.787,2.882) and (1.791,2.881) .. (1.794,2.88)
 .. controls (1.813,2.873) and (1.833,2.87) .. (1.852,2.868)
 .. controls (1.869,2.867) and (1.903,2.876) .. (1.911,2.879)
 .. controls (1.921,2.881) and (1.948,2.888) .. (1.956,2.889)
 .. controls (1.965,2.891) and (1.992,2.898) .. (2.002,2.903)
 .. controls (2.012,2.909) and (2.032,2.916) .. (2.039,2.924)
 .. controls (2.046,2.931) and (2.056,2.938) .. (2.067,2.943)
 .. controls (2.078,2.947) and (2.089,2.962) .. (2.107,2.976)
 .. controls (2.124,2.989) and (2.14,3.011) .. (2.14,3.011)
 .. controls (2.14,3.011) and (2.117,3.014) .. (2.11,3.02)
 .. controls (2.103,3.025) and (2.088,3.029) .. (2.072,3.032)
 .. controls (2.056,3.035) and (2.034,3.036) .. (2.02,3.039)
 .. controls (2.006,3.043) and (1.994,3.052) .. (1.982,3.052)
 .. controls (1.978,3.051) and (1.972,3.051) .. (1.966,3.051)
 .. controls (1.957,3.051) and (1.947,3.052) .. (1.938,3.053)
 .. controls (1.924,3.056) and (1.888,3.063) .. (1.871,3.068)
 .. controls (1.854,3.074) and (1.852,3.088) .. (1.854,3.107)
 .. controls (1.855,3.126) and (1.878,3.162) .. (1.885,3.17)
 .. controls (1.891,3.177) and (1.91,3.201) .. (1.916,3.219)
 .. controls (1.921,3.237) and (1.938,3.259) .. (1.945,3.279)
 .. controls (1.953,3.299) and (1.97,3.31) .. (1.974,3.335)
 .. controls (1.977,3.359) and (1.982,3.372) .. (1.989,3.382)
 .. controls (1.996,3.393) and (2.002,3.409) .. (1.998,3.409)
 .. controls (1.992,3.405) and (1.97,3.396) .. (1.957,3.398)
 .. controls (1.94,3.401) and (1.93,3.4) .. (1.917,3.398)
 .. controls (1.907,3.397) and (1.883,3.418) .. (1.882,3.433)
 .. controls (1.88,3.447) and (1.863,3.466) .. (1.856,3.477)
 .. controls (1.849,3.487) and (1.85,3.512) .. (1.848,3.525)
 .. controls (1.847,3.539) and (1.824,3.586) .. (1.82,3.601)
 .. controls (1.817,3.617) and (1.811,3.634) .. (1.797,3.656)
 .. controls (1.785,3.676) and (1.774,3.716) .. (1.775,3.728)
 .. controls (1.775,3.741) and (1.77,3.749) .. (1.76,3.769)
 .. controls (1.75,3.788) and (1.733,3.83) .. (1.732,3.851)
 .. controls (1.731,3.871) and (1.728,3.897) .. (1.724,3.897)
 .. controls (1.721,3.897) and (1.719,3.871) .. (1.718,3.868)
 .. controls (1.716,3.865) and (1.703,3.818) .. (1.701,3.807)
 .. controls (1.7,3.797) and (1.693,3.778) .. (1.685,3.772)
 .. controls (1.678,3.767) and (1.65,3.721) .. (1.644,3.701)
 .. controls (1.638,3.68) and (1.63,3.659) .. (1.617,3.646)
 .. controls (1.603,3.633) and (1.591,3.594) .. (1.582,3.579)
 .. controls (1.573,3.565) and (1.554,3.508) .. (1.547,3.477)
 .. controls (1.54,3.445) and (1.517,3.402) .. (1.513,3.379)
 .. controls (1.51,3.355) and (1.518,3.28) .. (1.528,3.248)
 .. controls (1.538,3.216) and (1.542,3.177) .. (1.543,3.163)
 .. controls (1.544,3.149) and (1.537,3.124) .. (1.532,3.105)
 .. controls (1.528,3.092) and (1.517,3.087) .. (1.507,3.089)
 .. controls (1.492,3.091) and (1.446,3.139) .. (1.413,3.186)
 .. controls (1.38,3.233) and (1.364,3.257) .. (1.332,3.283)
 .. controls (1.3,3.31) and (1.267,3.331) .. (1.232,3.345)
 .. controls (1.218,3.351) and (1.205,3.353) .. (1.193,3.353)
 .. controls (1.177,3.353) and (1.164,3.348) .. (1.156,3.343)
 .. controls (1.143,3.332) and (1.127,3.318) .. (1.112,3.316)
 .. controls (1.097,3.314) and (1.068,3.308) .. (1.056,3.307)
 .. controls (1.043,3.307) and (1.015,3.312) .. (0.995,3.313)
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\end{tikzpicture}
}
}