256 lines
9.4 KiB
TeX
256 lines
9.4 KiB
TeX
% Copyright (C) 2018 Pasquale Claudio Africa.
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% 2018 Sebastian Friedl.
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%
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% This file is part of beamerthemefocus.
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%
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% beamerthemefocus is free software: you can redistribute it and/or modify
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% it under the terms of the GNU General Public License as published by
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% the Free Software Foundation, either version 3 of the License, or
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% (at your option) any later version.
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%
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% beamerthemefocus is distributed in the hope that it will be useful,
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% but WITHOUT ANY WARRANTY; without even the implied warranty of
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% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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% GNU General Public License for more details.
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%
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% You should have received a copy of the GNU General Public License
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% along with beamerthemefocus. If not, see <http://www.gnu.org/licenses/>.
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\mode<presentation>
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\RequirePackage{appendixnumberbeamer}% Don't number appendix frames.
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\RequirePackage{etoolbox}% \BeforeBeginEnvironment
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\RequirePackage{tikz}
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% FRAMETITLE TEMPLATES. --------------------------------------------------------
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\defbeamertemplate*{frametitle}{focus}{%
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% If not title page.
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\ifnum\value{framenumber}>0%
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\vspace{-1pt}%
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\begin{beamercolorbox}[wd=\paperwidth,leftskip=0.55cm,rightskip=0.55cm,sep=0.2cm]{frametitle}%
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\strut\insertframetitle\strut%
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\end{beamercolorbox}%
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\fi%
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}
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% Plain header.
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\defbeamertemplate{frametitle}{plain}{%
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% If not title page.
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\ifnum\value{framenumber}>0%
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\vspace{-1pt}%
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\begin{beamercolorbox}[wd=\paperwidth,leftskip=0.55cm,rightskip=0.55cm,sep=0.2cm,ignorebg]{frametitle}%
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\strut%
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\end{beamercolorbox}%
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\fi%
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}
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% FOOTLINE TEMPLATES. ----------------------------------------------------------
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% Lenghts for the progress bar footline.
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\newlength{\focus@pbar@height}% Progress bar height.
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\newlength{\focus@pbar@leftoffset}
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\newlength{\focus@pbar@rightoffset}
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\defbeamertemplate*{footline}{progressbar}{%
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% If not appendix.
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\ifnum\mainend<0% From package appendixnumberbeamer.
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%
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\settowidth{\focus@pbar@leftoffset}{1}%
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\addtolength{\focus@pbar@leftoffset}{1.5em}%
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%
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\settowidth{\focus@pbar@rightoffset}{\inserttotalframenumber}%
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\addtolength{\focus@pbar@rightoffset}{1.5em}%
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%
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% If not title page.
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\ifnum\c@framenumber>0%
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\ifnum\c@framenumber<\inserttotalframenumber%
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\begin{tikzpicture}[inner xsep=0.5em, inner ysep=0.5ex]\usebeamerfont{footline}
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\pgfmathsetmacro{\focus@pbar@progress}%
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{(\paperwidth-\focus@pbar@leftoffset-\focus@pbar@rightoffset)*(\insertframenumber/\inserttotalframenumber)}
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\clip (0,0) rectangle ++(\paperwidth,\the\focus@pbar@height);
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\fill[footline.bg] (0,0) rectangle ++(\the\focus@pbar@leftoffset,\the\focus@pbar@height);
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\fill[footline.bg] (\the\focus@pbar@leftoffset,0) rectangle ++(\focus@pbar@progress pt,\the\focus@pbar@height)
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++(0,{-0.5*\the\focus@pbar@height}) node[anchor=east, text=footline.fg] {\strut\insertframenumber};
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\fill[footline.bg] (\paperwidth,0) rectangle ++(-\the\focus@pbar@rightoffset,\the\focus@pbar@height)
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++(0,{-0.5*\the\focus@pbar@height}) node[anchor=west, text=footline.fg] {\strut\inserttotalframenumber};
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\end{tikzpicture}%
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\else%
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\begin{tikzpicture}[inner xsep=0.5em, inner ysep=0.5ex]
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\clip (0,0) rectangle ++(\paperwidth,\the\focus@pbar@height);
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\fill[footline.bg] (0,0) rectangle ++(\paperwidth,\the\focus@pbar@height);
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\node[anchor=east, footline.fg] at ({\paperwidth-\the\focus@pbar@rightoffset},{0.5*\focus@pbar@height}) {\strut\insertframenumber};
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\node[footline.fg] at ({\paperwidth-\the\focus@pbar@rightoffset},{0.5*\focus@pbar@height}) {\strut/};
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\node[anchor=west, footline.fg] at ({\paperwidth-\the\focus@pbar@rightoffset},{0.5*\focus@pbar@height}) {\strut\inserttotalframenumber};
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\end{tikzpicture}%
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\fi%
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\fi%
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\fi%
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}
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% Full bar footline.
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\defbeamertemplate{footline}{fullbar}{%
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% If not appendix.
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\ifnum\mainend<0% From package appendixnumberbeamer.
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%
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\settowidth{\focus@pbar@leftoffset}{1}%
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\addtolength{\focus@pbar@leftoffset}{1.5em}%
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%
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\settowidth{\focus@pbar@rightoffset}{\inserttotalframenumber}%
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\addtolength{\focus@pbar@rightoffset}{1.5em}%
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%
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% If not title page.
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\ifnum\c@framenumber>0%
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\begin{tikzpicture}[inner xsep=0.5em, inner ysep=0.5ex]
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\clip (0,0) rectangle ++(\paperwidth,\the\focus@pbar@height);
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\fill[footline.bg] (0,0) rectangle ++(\paperwidth,\the\focus@pbar@height);
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\node[anchor=east, footline.fg] at ({\paperwidth-\the\focus@pbar@rightoffset},{0.5*\focus@pbar@height}) {\strut\insertframenumber};
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\node[footline.fg] at ({\paperwidth-\the\focus@pbar@rightoffset},{0.5*\focus@pbar@height}) {\strut/};
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\node[anchor=west, footline.fg] at ({\paperwidth-\the\focus@pbar@rightoffset},{0.5*\focus@pbar@height}) {\strut\inserttotalframenumber};
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\end{tikzpicture}%
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\fi%
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\fi%
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}
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% Empty footline.
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\defbeamertemplate{footline}{none}{}
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\DeclareOptionBeamer{numbering}{\def\beamer@focus@numbering{#1}}
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\ExecuteOptionsBeamer{numbering=progressbar}
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\ProcessOptionsBeamer
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\def\beamer@focus@numberingprogressbar{progressbar}
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\def\beamer@focus@numberingfullbar{fullbar}
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\def\beamer@focus@numberingnone{none}
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% BACKGROUND CANVAS TEMPLATES. -------------------------------------------------
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\defbeamertemplate*{background canvas}{focus}{%
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\begin{tikzpicture}
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\clip (0,0) rectangle ++(\paperwidth,\paperheight);
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\fill[normal text.bg] (0,0) rectangle ++(\paperwidth,\paperheight);
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\end{tikzpicture}%
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}
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\defbeamertemplate{background canvas}{focusplain}{%
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\begin{tikzpicture}
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\clip (0,0) rectangle ++(\paperwidth,\paperheight);
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\fill[normal text.bg] (0,0) rectangle ++(\paperwidth,\paperheight);
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\end{tikzpicture}%
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}
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\defbeamertemplate{background canvas}{focusframe}{%
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\begin{tikzpicture}
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\clip (0,0) rectangle ++(\paperwidth,\paperheight);
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\fill[frametitle.bg] (0,0) rectangle ++(\paperwidth,\paperheight);
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\end{tikzpicture}%
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}
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% HOOKS FOR CREATING FRAMES. ---------------------------------------------------
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\BeforeBeginEnvironment{frame}{%
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\setbeamertemplate{background canvas}[focus]%
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\setbeamertemplate{frametitle}[focus]%
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%
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% Reset footline height and determine it for the current slide.
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\setlength{\focus@pbar@height}{0cm}%
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\focus@calculatefootheight%
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%
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% If not appendix.
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\ifnum\mainend<0 % From package appendixnumberbeamer.
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\settoheight{\focus@pbar@height}{\usebeamerfont{footline}1234567890/}%
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\addtolength{\focus@pbar@height}{6pt}%
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%
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\ifx\beamer@focus@numbering\beamer@focus@numberingprogressbar%
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\setbeamertemplate{footline}[progressbar]%
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\else%
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\ifx\beamer@focus@numbering\beamer@focus@numberingfullbar%
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\setbeamertemplate{footline}[fullbar]%
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\fi%
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\fi%
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%
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\focus@calculatefootheight%
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\fi%
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}
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% Enable noframenumbering option.
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\define@key{beamerframe}{noframenumbering}[true]{%
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\setbeamertemplate{footline}[none]%
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\setlength{\focus@pbar@height}{0cm}%
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\focus@calculatefootheight%
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%
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\addtocounter{framenumber}{-1}%
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}
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% Enable plain option.
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\define@key{beamerframe}{plain}[true]{%
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\setbeamertemplate{background canvas}[focusplain]%
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\setbeamertemplate{frametitle}[plain]%
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%
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\setbeamertemplate{footline}[none]%
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}
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% Full vertical centering
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% (from https://tex.stackexchange.com/questions/247826/beamer-full-vertical-centering).
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\define@key{beamerframe}{c}[true]{%
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\beamer@frametopskip=0pt plus 1fill\relax%
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\beamer@framebottomskip=0pt plus 1fill\relax%
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\beamer@frametopskipautobreak=0pt plus 0.4\paperheight\relax%
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\beamer@framebottomskipautobreak=0pt plus 0.6\paperheight\relax%
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\def\beamer@initfirstlineunskip{}%
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}
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% Enable focus option.
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\providebool{focus@standout}
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\define@key{beamerframe}{focus}[true]{%
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\booltrue{focus@standout}%
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\begingroup%
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\setkeys{beamerframe}{noframenumbering}%
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\setbeamertemplate{background canvas}[focusframe]%
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\setbeamertemplate{frametitle}[plain]%
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%
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\setkeys{beamerframe}{c}%
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\centering%
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\usebeamerfont{focusframe}%
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\usebeamercolor[fg]{frametitle}%
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}
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\apptocmd{\beamer@reseteecodes}
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{%
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\ifbool{focus@standout}%
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{%
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\endgroup%
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\boolfalse{focus@standout}%
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}{}%
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}{}{}
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% Recalculate the footline's size and refresh other parameters.
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% Partially copied from the definition of \beamer@calculateheadfoot.
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\def\focus@calculatefootheight{%
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\footheight=\focus@pbar@height%
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\advance\footheight by 4pt%
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\sidebarheight=\paperheight%
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\advance\sidebarheight by-\headheight%
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\advance\sidebarheight by\headdp%
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\advance\sidebarheight by-\footheight%
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\advance\sidebarheight by 4pt%
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\footskip=\footheight%
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\textheight=\paperheight%
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\advance\textheight by-\footheight%
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\advance\textheight by-\headheight%
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\@colht\textheight%
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\@colroom\textheight%
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\vsize\textheight%
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}
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\mode<all>
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