Add (sub)section page + fix frame numbering

Author: pcafrica

README.md

@@ -7,6 +7,7 @@ Demo
 ----
 ![](https://github.com/elauksap/beamerthemepolimi/blob/master/demo-bgphoto.jpg)
 ![](https://github.com/elauksap/beamerthemepolimi/blob/master/demo-bgwhite.jpg)
+![](https://github.com/elauksap/beamerthemepolimi/blob/master/demo-sectionpage.jpg)
 ![](https://github.com/elauksap/beamerthemepolimi/blob/master/demo-slide.jpg)
 
 Instructions

beamerinnerthemepolimi.sty

@@ -1,9 +1,9 @@
 \mode<presentation>
 
 % Background.
-\setbeamertemplate{background}{
+\defbeamertemplate*{background}{polimi}{
     % Titlepage.
-    \ifnum\c@framenumber=1
+    \ifnum\c@framenumber=0
         \begin{tikzpicture}[overlay, remember picture]
             \if@bgphoto
                 \node at (current page.north) [anchor=north, inner sep=0pt] {\includegraphics[width=\paperwidth]{bgphoto_cut.jpg}};
@@ -29,6 +29,13 @@
     \fi
 }
 
+% Only footer background.
+\defbeamertemplate*{background}{footer}{
+    \begin{tikzpicture}[overlay, remember picture]
+    \node (foot) at (current page.south) [anchor=south, minimum width=\paperwidth, minimum height=0.105\paperheight, fill=bluePolimi] {};
+    \end{tikzpicture}
+}
+
 % Title page.
 \defbeamertemplate*{title page}{polimi}[1][]
 {
@@ -55,9 +62,38 @@
 
     \vfill
 
-    \addtocounter{page}{-1}
+    \addtocounter{framenumber}{-1}
 }
 
 % Table of Contents.
 \setbeamertemplate{section in toc}[circle]
 \setbeamertemplate{subsection in toc}{\leavevmode \leftskip=0.7em {\color{bluePolimi} $\bullet$} \hskip1pt \inserttocsubsection\par}  
+
+% Section page.
+\defbeamertemplate*{section page}{polimi}{
+    \begin{tikzpicture}[overlay, remember picture]
+        \node (foot) at (current page.south) [anchor=south, minimum width=\paperwidth, minimum height=0.4415\paperheight, fill=bluePolimi] {};
+        \node at ([shift={(0, -0.1)}] foot.north) {\includegraphics[width=0.99\paperwidth]{decoration.png}};
+        \path let \p1 = ([shift={(0, 0.105\paperheight+0.25)}] current page.south east), \p2 = (current page.west) in (\paperwidth,\y1) edge [white, line width=0.5] (\x2,\y1);
+        \node at ([shift={(\xshift, 3.5)}] current page.south west) [anchor=north west, inner sep=0pt, text width=\textwidth+1cm]
+        {
+            {\color{white}\Large\bf \insertsection}
+        };
+    \end{tikzpicture}
+}
+\setbeamertemplate{section page}[polimi]
+
+
+% Subsection page.
+\defbeamertemplate*{subsection page}{polimi}{
+    \begin{tikzpicture}[overlay, remember picture]
+    \node (foot) at (current page.south) [anchor=south, minimum width=\paperwidth, minimum height=0.4415\paperheight, fill=bluePolimi] {};
+    \node at ([shift={(0, -0.1)}] foot.north) {\includegraphics[width=0.99\paperwidth]{decoration.png}};
+    \path let \p1 = ([shift={(0, 0.105\paperheight+0.25)}] current page.south east), \p2 = (current page.west) in (\paperwidth,\y1) edge [white, line width=0.5] (\x2,\y1);
+    \node at ([shift={(\xshift, 3.5)}] current page.south west) [anchor=north west, inner sep=0pt, text width=\textwidth+1cm]
+    {
+        {\color{white}\Large\bf \insertsubsection}
+    };
+    \end{tikzpicture}
+}
+\setbeamertemplate{subsection page}[polimi]

beamerouterthemepolimi.sty

@@ -7,34 +7,40 @@
 \defbeamertemplate*{frametitle}{polimi}
 {
     \begin{tikzpicture}[overlay, remember picture]
-    \node at ([shift={(\xshift, -0.35)}] current page.north west) [anchor=north west, inner sep=0pt]
+    \node at ([shift={(\xshift, -0.6)}] current page.north west) [anchor=south west, inner sep=0pt]
     {
-        {\small \insertsection \ifx\insertsubsection\empty\else\ - \insertsubsection\fi\leavevmode}
+        {\small \insertsectionhead \ifx\insertsubsection\empty\else\ - \insertsubsectionhead\fi\leavevmode}
     };
-    \node at ([shift={(\xshift, -0.85)}] current page.north west) [anchor=north west, inner sep=0pt]
+    \node at ([shift={(\xshift, -1.25)}] current page.north west) [anchor=south west, inner sep=0pt]
     {
         \insertframetitle
     };
     \end{tikzpicture}
     \vspace{1.1cm}
 }
 
+% Header.
+\defbeamertemplate*{frametitle}{plain}{}
+
 % Use frametitle template even if \frametitle is empty.
 \patchcmd{\endbeamer@frameslide}{\ifx\beamer@frametitle\@empty}{\iffalse}{}{\errmessage{Failed to patch frametitle.}}
 
-\defbeamertemplate{headline}{page number}
+\defbeamertemplate{headline}{frame number}
 {
-    \ifnum\c@framenumber>1
-        \vspace{\baselineskip}
-        \setbeamertemplate{footline}[page number]
-        \usebeamertemplate{footline}
+    \ifnum\c@framenumber>0
+        \begin{tikzpicture}[overlay, remember picture]
+        \node at ([shift={(-\xshift, -1.25)}] current page.north east) [anchor=south west, inner sep=0pt]
+        {
+            {\color{white} \tiny \insertframenumber/\inserttotalframenumber}
+        };
+        \end{tikzpicture}
     \fi
 }
 
 % Footer.
 \defbeamertemplate{footline}{polimi}{
     \begin{minipage}[b][1cm][c]{\paperwidth}
-        \ifnum\c@framenumber>1
+        \ifnum\c@framenumber>0
             \hspace{\xshift}
             {\small\color{white}\insertauthor}
             \hspace*{\fill}
@@ -48,12 +54,24 @@
 
 % Enable nonumber option.
 \BeforeBeginEnvironment{frame}{
-    \setbeamertemplate{headline}[page number]
+    \setbeamertemplate{background}[polimi]
+    \setbeamertemplate{frametitle}[polimi]
+    \setbeamertemplate{headline}[frame number]
 }
 
 \makeatletter
 \define@key{beamerframe}{nonumber}[true]{
     \setbeamertemplate{headline}{}
-    \addtocounter{page}{-1}
+    \addtocounter{framenumber}{-1}
+}
+\makeatother
+
+% Enable plain option.
+\makeatletter
+\define@key{beamerframe}{plain}[true]{
+    \setbeamertemplate{background}[footer]
+    \setbeamertemplate{frametitle}[plain]
+    \setbeamertemplate{headline}{}
+    \addtocounter{framenumber}{-1}
 }
 \makeatother

beamerthemepolimi.sty

@@ -13,6 +13,7 @@
 \ProcessOptions
 
 \RequirePackage{tikz}
+\usetikzlibrary{calc}
 \graphicspath{{beamerthemepolimi_img/}}
 
 \RequirePackage{etoolbox} % \patchcmd

demo-bgphoto.jpg

@@ -17,7 +17,7 @@
 \title{Title}
 \subtitle{Subtitle}
 \author{Author}
-\date{01 mar 2017}
+\date{dd mm yyyy}
 
 \begin{document}
     \begin{frame}
@@ -37,11 +37,19 @@
     \end{frame}
 
     \section{Section 1}
+    % Section page.
+    \begin{frame}[plain]{}
+        \sectionpage
+    \end{frame}
+    
     \begin{frame}{Slide 1}
         \lipsum[1]
     \end{frame}
 
     \subsection{Subsection 1.1}
+    \begin{frame}[plain]{}
+        \subsectionpage
+    \end{frame}
     \begin{frame}
         This frame has an empty title.
         \vfill
@@ -57,20 +65,21 @@
     \end{frame}
 
     \subsection{Subsection 1.2}
-    
     % Slide without numbering.
     \begin{frame}[nonumber]{Slide 1.2 without numbering}
         \lipsum[2]
     \end{frame}
 
-    \section{Section 2}
+    \section[Short]{Section 2}
     \begin{frame}{Slide 2}
         \begin{block}{Block}
             Text.
         \end{block}
+        \pause
         \begin{alertblock}{Alert block}
             Alert \alert{text}.
         \end{alertblock}
+        \pause
         \begin{exampleblock}{Example block}
             Example \textcolor{greenPolimi}{text}.
         \end{exampleblock}