% author Matus Necas, October 2026
% original work by Jan Sumsky <jan.sumsky@gmail.com>, August 2024
%
% Description: Beamer footline template configuration and dimension calculations.
%              Handles adaptive footer layouts for title and standard slides,
%              logo positioning, slide numbering, and navigation symbol removal.

\RequirePackage{calc}
\RequirePackage{adjustbox}

\mode<presentation>

\input{organisation/info.sty}

% ==============================================================================
% Footer Dimension & Ratio Calculations
% ==============================================================================

% Custom length variables for footer dimensions based on scaled design ratios (128mm / 254mm)
\newlength{\footlinedp}
\setlength{\footlinedp}{9.127mm * \ratio{128mm}{254mm}}

\newlength{\footlineht}
\setlength{\footlineht}{19.454mm * \ratio{128mm}{254mm}}

\newlength{\footlinesk}
\setlength{\footlinesk}{3.338mm * \ratio{128mm}{254mm}}

% Footer logo width configuration
\newlength{\logowd}
\setlength{\logowd}{60.046mm * \ratio{128mm}{254mm}}

% Declare and scale footer logo image to fit footer height precisely
\pgfdeclareimage[height=\dimexpr\footlineht + \footlinedp - 2pt\relax]{smalllogo}{\orgLogoFooter}

% Fixed widths for footer text elements and slide number counters
\newlength{\footlinetextwd}
\setlength{\footlinetextwd}{100pt}

\newlength{\numberwd}
\setlength{\numberwd}{20pt}

% Extra right margin offset (used for horizontal alignment correction)
\def\footextraright{3mm}

% ==============================================================================
% Title Slide Toggle & Footline Template
% ==============================================================================

% 1. Boolean switch declaration for title slide detection
\newif\ifuni@onstitle
\uni@onstitlefalse

% 2. Unified global Beamer footline template (adapts layout based on \ifuni@onstitle)
\defbeamertemplate*{footline}{uni}{
    \begin{beamercolorbox}[
        wd=\paperwidth,
        dp=\footlinedp,
        ht=\footlineht,
        leftskip=\footlinesk,
        rightskip=\dimexpr\footlinesk + 3mm\relax
    ]{footline}
        \usebeamerfont{title in head/foot}%
        \ifuni@onstitle
            % --- TITLE SLIDE FOOTER: Logo on left, presentation date on right ---
            \raisebox{\dimexpr 0.5\footlineht - 0.5\footlinedp - 0.5\height\relax}{\pgfuseimage{smalllogo}}%
            \hfill
            \raisebox{\dimexpr 0.5\footlineht - 0.5\footlinedp - 0.5\height\relax}{\insertdate}%
        \else
            % --- STANDARD SLIDE FOOTER: Logo on left, slide number counter on right ---
            \raisebox{\dimexpr 0.5\footlineht - 0.5\footlinedp - 0.5\height\relax}{\pgfuseimage{smalllogo}}%
            \hfill
            \raisebox{\dimexpr 0.5\footlineht - 0.5\footlinedp - 0.5\height\relax}{%
                \makebox[\numberwd][r]{\insertframenumber\,/\,\inserttotalframenumber}%
            }%
        \fi
    \end{beamercolorbox}
}

% Remove default Beamer navigation symbols (bottom right corner)
\defbeamertemplate*{navigation symbols}{uni}{}

\mode<all>