% author Matus Necas, October 2026
% original work by Jan Sumsky <jan.sumsky@gmail.com>, August 2024
%
% Description: High-level slide layout macros for Beamer presentations.
%              Provides specialized commands for title slides, table of contents,
%              section dividers, single-column, and two-column slide layouts.

\RequirePackage{multicol}

\input{organisation/info.sty}                                            % Import user configurations and colors

% ==============================================================================
% DIMENSIONS CONFIGURATION
% ==============================================================================
\newlength{\uniTitleTopSpace}\setlength{\uniTitleTopSpace}{42pt}         % Top spacing for title slides
\newlength{\uniTitleSubtitleGap}\setlength{\uniTitleSubtitleGap}{15pt}   % Gap between title and subtitle
\newlength{\uniTitleAuthorGap}\setlength{\uniTitleAuthorGap}{10pt}       % Gap before author (standard title)
\newlength{\uniColorAuthorGap}\setlength{\uniColorAuthorGap}{10pt}       % Gap before author (colored title)
\newlength{\uniColumnIndent}\setlength{\uniColumnIndent}{0.8em}          % Text indentation in columns
\newlength{\uniFootlineRightPad}\setlength{\uniFootlineRightPad}{3mm}    % Right padding in footline
\newlength{\uniColumnGap}\setlength{\uniColumnGap}{2em}                  % Gap between two columns


% ==============================================================================
% STATE SWITCH AND GLOBAL FOOTLINE TOGGLE
% ==============================================================================
\newif\ifuni@onstitle
\uni@onstitlefalse


% ==============================================================================
% HELPER MACRO FOR TWO-COLUMN SLIDE
% ==============================================================================
% #1: Left column width ratio relative to \textwidth (e.g., 0.5)
% #2: Left column content
% #3: Right column content
\newcommand{\uni@renderColumns}[3]{%
    \noindent
    \begin{minipage}[t]{#1\textwidth}%
        \setlength{\fboxsep}{0pt}%
        \begin{minipage}[t]{\linewidth}%
            #2%
        \end{minipage}%
    \end{minipage}%
    \hspace{\uniColumnGap}%
    \begin{minipage}[t]{\dimexpr\textwidth - #1\textwidth - \uniColumnGap\relax}%
        \setlength{\fboxsep}{0pt}%
        \begin{minipage}[t]{\linewidth}%
            #3%
        \end{minipage}%
    \end{minipage}%
}


% ==============================================================================
% HELPER MACRO FOR TITLE TEXT
% ==============================================================================
% #1: Title formatting, #2: Subtitle formatting, #3: Title text, #4: Subtitle text
\newcommand{\uni@renderTitleText}[4]{%
    #1#3%
    \def\uni@tempsub{#4}%
    \ifx\uni@tempsub\@empty
    \else
        \vspace{\uniTitleSubtitleGap}%
        \par
        #2#4%
    \fi
}


% ==============================================================================
% TABLE OF CONTENTS SLIDE
% ==============================================================================
% #1: Number of columns (optional, default is 1)
\NewDocumentCommand{\slideTableOfContents}{o}{%
    \uni@onstitlefalse
    \begin{frame}{%
       \contentsname%
    }%
        \IfValueTF{#1}{%
            \ifnum#1>1%
                \begin{multicols}{#1}%
                    \tableofcontents
                \end{multicols}%
            \else%
                \tableofcontents%
            \fi%
        }{%
            \tableofcontents%
        }%
    \end{frame}%
}


% ==============================================================================
% 2. TITLE SLIDES
% ==============================================================================

% Creates a standard title slide using global Beamer variables (\inserttitle, \insertsubtitle, \insertauthor).
\NewDocumentCommand{\slideTitle}{}{
    \uni@onstitletrue
    \begin{frame}[c]
        \vspace{\uniTitleTopSpace}
        \noindent
        \begin{minipage}{\textwidth}
            \raggedright
            \uni@renderTitleText
                {\usebeamerfont{title}\usebeamercolor[fg]{title}}
                {\usebeamerfont{subtitle}\usebeamercolor[fg]{subtitle}}
                {\inserttitle}{\insertsubtitle}%
            
            \vspace{\uniTitleAuthorGap}%
            {\usebeamerfont{author}\color{colorText}\insertauthor}%
        \end{minipage}
    \end{frame}
}


% Creates a colored title slide with custom background canvas and vertical centering matching \slideTitle.
\NewDocumentCommand{\slideTitleColor}{}{
    \uni@onstitletrue
    {
        \usebeamercolor{footline}
        \setbeamercolor{background canvas}{bg=footline.bg}
        
        \begin{frame}[c,plain]
            \vspace{\uniTitleTopSpace}
            \noindent
            \begin{minipage}{\textwidth}
                \raggedright
                \color{footline.fg}%
                \uni@renderTitleText
                    {\usebeamerfont{title}}
                    {\usebeamerfont{subtitle}}
                    {\inserttitle}{\insertsubtitle}%
                
                \vspace{\uniTitleAuthorGap}%
                {\usebeamerfont{author}\insertauthor}%
            \end{minipage}
        \end{frame}
    }
}


% ==============================================================================
% 3. SECTIONS
% ==============================================================================

% Creates a dedicated section divider slide with vertical centering.
% *  : Optional star (captured as #1) to suppress automatic section registration
% #2 : Section title text (+m supports multi-line text with \\)
\NewDocumentCommand{\slideSection}{s +m}{
    \uni@onstitlefalse
    \IfBooleanF{#1}{\section{#2}}
    \begin{frame}
        \vfill
        \begin{beamercolorbox}[leftskip=\titlelf]{section title}
            \usebeamerfont{section title}#2
        \end{beamercolorbox}
        \vfill
    \end{frame}
} 


% Creates a dedicated section divider slide with vertical centering and subtitle.
% *  : Optional star (captured as #1) to suppress automatic section registration
% #2 : Section title text (+m supports multi-line text with \\)
% #3 : Section subtitle text (+m supports multi-line text with \\)
\NewDocumentCommand{\slideSectionSubtitle}{s +m +m}{
    \uni@onstitlefalse
    \IfBooleanF{#1}{\section{#2}}
    
    \begin{frame}
        \vfill
        \begin{beamercolorbox}[leftskip=\titlelf]{section title}
            \usebeamerfont{section title}#2%
            \IfNoValueF{#3}{%
                \par
                \vspace{\uniTitleSubtitleGap}%
                \usebeamerfont{subtitle}\color{colorText}#3%
            }%
        \end{beamercolorbox}
        \vfill
    \end{frame}
}


% ==============================================================================
% 4. SINGLE-COLUMN SLIDES 
% ==============================================================================

% Creates a plain single-column slide without a frame title.
% #1: Slide content (+m supports multi-line text, lists, and macros)
\NewDocumentCommand{\slideOneColumnPlain}{+m}{
    \uni@onstitlefalse
    \begin{frame}
        #1
    \end{frame}
}


% Creates a standard single-column slide with a frame title and section handling.
% *  : Optional star (captured as #1) to suppress automatic section registration
% #2 : Frame and section title (m)
% #3 : Slide content (+m)
\NewDocumentCommand{\slideOneColumn}{s m +m}{
    \uni@onstitlefalse
    \IfBooleanF{#1}{\section{#2}}
    
    \begin{frame}{#2}
        #3
    \end{frame}
}


% ==============================================================================
% 5. TWO-COLUMN SLIDES 
% ==============================================================================

% Creates a blank two-column slide without a frame title.
% #1: Left column width ratio (e.g., 0.5 for 50%)
% #2: Left column content (+m supports multi-line text and macros)
% #3: Right column content (+m supports multi-line text and macros)
\NewDocumentCommand{\slideTwoColumnsPlain}{m +m +m}{
    \uni@onstitlefalse
    \begin{frame}
        \uni@renderColumns{#1}{#2}{#3}
    \end{frame}
}


% Creates a standard two-column slide with a frame title and section handling.
% *  : Optional star to suppress automatic section registration
% #1 : Frame and section title (m)
% #2 : Left column width ratio (m)
% #3 : Left column content (+m)
% #4 : Right column content (+m)
\NewDocumentCommand{\slideTwoColumns}{s m m +m +m}{
    \uni@onstitlefalse
    \IfBooleanF{#1}{\section{#2}}
    
    \begin{frame}{#2}
        \uni@renderColumns{#3}{#4}{#5}
    \end{frame}
}