% this style was created by Horea Christian and is basted on the ETH Zürich corporate design color palette https://www.ethz.ch/services/en/service/communication/corporate-design/colour.html
\ProvidesPackage{beamerthemeZH}

\mode<presentation>

\definecolor{ETH1}{RGB}{31,64,122}
\definecolor{ETH3}{RGB}{0,105,180}
\definecolor{ETH6}{RGB}{111,111,110}
\definecolor{ETH8}{RGB}{0,122,146}
\definecolor{ETH10}{RGB}{130,190,30}
\definecolor{tlg}{RGB}{230,230,230}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%It seems many of the following entries do not control any visible Behaviour. All such entries are
%set to red, so that they are easy to spot if they ever become visible

\setbeamercolor{headline}{fg=red,bg=ETH3} % This is the recommended color for Specialist community usage: change to ETH1 for general communication
\setbeamercolor{footline}{fg=red, bg=red}
\setbeamerfont{footline}{size=\large,series=\bf}
\setbeamercolor{separation line}{bg=ETH3}
\setbeamercolor{title in headline}{fg=white}
\setbeamercolor{author in headline}{fg=white}
\setbeamercolor{institute in headline}{fg=white}

\setbeamercolor{framesubtitle}{fg=red, bg=ta2gray}
\setbeamercolor{author in head/foot}{fg=white, bg=ETH3}
\setbeamercolor{title in head/foot}{fg=red, bg=red}

\setbeamercolor*{normal text}{fg=ETH6, bg=tlg}
\setbeamercolor*{block body}{fg=black, bg=white}
\setbeamercolor*{block title}{fg=black,bg=ETH10}
\setbeamerfont{block title}{size=\large,series=\bf}
\setbeamercolor{upper separation line head}{fg=red}

\setbeamercolor*{example body}{fg=red,bg=red}
\setbeamercolor*{example text}{fg=red,bg=red}
\setbeamercolor*{example title}{bg=red,fg=red}

\setbeamercolor{alerted text}{fg=red}
\setbeamercolor{structure}{fg=ETH1}

\setbeamertemplate{itemize items}{\color{ETH10}$\blacktriangleright$}
\setbeamertemplate{navigation symbols}{}  % no navigation on a poster

\newenvironment<>{myblock}[1]{%
 \begin{actionenv}#2%
 \def\insertblocktitle{\centering#1}%
 \par%
 \usebeamertemplate{block begin}\leftskip=14pt\rightskip=14pt\vspace{10pt}}
 {\par\vspace{10pt}\usebeamertemplate{block end}
 \end{actionenv}}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% !!! This environment can't both have nice margins AND display the contained text as justified:
% We preferentially use the above but keep this one just-in-case
\setbeamertemplate{block begin}{
\setlength{\mylength}{\textwidth+2ex}%
  \vskip2ex
  \begin{beamercolorbox}[ht=2.8ex,dp=2ex, wd=\mylength, center,rounded=false,shadow=false,leftskip=1cm,colsep*=0ex]{block title}%
    \usebeamerfont*{block title}\centering \insertblocktitle
  \end{beamercolorbox}\vskip-9pt%
  {\ifbeamercolorempty[bg]{block body}{}{\nointerlineskip\vskip-0.5ex}}%
  \usebeamerfont{block body}%
  \begin{beamercolorbox}[rounded=false,shadow=false,center,wd=\textwidth,]{block body}%
    \ifbeamercolorempty[bg]{block body}\vbox{}%
  \begin{minipage}{0.96\textwidth}\vbox{}%
  \justify}
  \setbeamertemplate{block end}{
  \end{minipage}
  \end{beamercolorbox}
}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\setbeamertemplate{headline}{
  \leavevmode

  \begin{beamercolorbox}[wd=\paperwidth]{headline}
    \begin{columns}[T]
      \begin{column}{.09\paperwidth}
      \end{column}
      \begin{column}{.675\paperwidth}
        \vskip4ex
        \raggedleft
        \usebeamercolor{title in headline}{\color{fg}\textbf{\LARGE{\inserttitle}}\\[1ex]}
        \usebeamercolor{author in headline}{\color{fg}\large{\insertauthor}\\[1ex]}
        \usebeamercolor{institute in headline}{\color{fg}\large{\insertinstitute}\\[1ex]}
        \vskip1ex
      \end{column}
      \begin{column}{.25\paperwidth}
        \vskip1cm
        \begin{center}
          \includegraphics[width=.6\textwidth]{img/zh_logo}
        \end{center}
        \vskip-1.5cm
      \end{column}
      \begin{column}{.03\paperwidth}
      \end{column}
    \end{columns}
  \end{beamercolorbox}

  \begin{beamercolorbox}[wd=\paperwidth]{lower separation line head}
    \rule{0pt}{2pt}
  \end{beamercolorbox}
  \vskip-2cm
}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\setbeamertemplate{footline}{
  \begin{beamercolorbox}[wd=\paperwidth]{upper separation line foot}
    \rule{0pt}{2pt}
  \end{beamercolorbox}

  \leavevmode%
  \begin{beamercolorbox}[ht=4ex,leftskip=1cm,rightskip=1cm]{author in head/foot}%
    \href{http://www.aic-fmi.ethz.ch}{www.aic-fmi.ethz.ch}
    \hfill
    \today
    \hfill
    \href{mailto:my_address@wikibooks.org}{ioanas@biomed.ee.ethz.ch}
    \vskip1ex
  \end{beamercolorbox}
  \vskip0pt%
  \begin{beamercolorbox}[wd=\paperwidth]{lower separation line foot}
    \rule{0pt}{2pt}
  \end{beamercolorbox}
}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Display a grid to help align images ... and it looks nice with this color scheme
% \beamertemplategridbackground[1cm]

%Some beamer customizations:
\setbeamertemplate{bibliography item}[text]
\setbeamertemplate{caption}[numbered]{}% Number float-like environments

\mode<all>