From 50e7b965d1fb7230a40446dc38f45d5be2bc51b1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Maximilian=20Ke=C3=9Fler?= <max@maximilian-kessler.de>
Date: Wed, 8 Sep 2021 13:51:06 +0200
Subject: [PATCH] add option for fancy header

---
 mkessler-lectures.sty | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/mkessler-lectures.sty b/mkessler-lectures.sty
index e373bb0..2313700 100644
--- a/mkessler-lectures.sty
+++ b/mkessler-lectures.sty
@@ -32,6 +32,10 @@
 \newif\ifenglish\englishtrue
 \DeclareOption{german}{\englishfalse}
 \DeclareOption{english}{\englishtrue}
+
+\newif\iffancyhead\fancyheadfalse
+\DeclareOption{fancyhead}{\fancyheadtrue}
+
 \DeclareOption*{\PackageWarning{mkessler-lectures}{Unknown '\CurrentOption'}}
 \ProcessOptions\relax
 
@@ -79,3 +83,24 @@
     \thispagestyle{plain}
     \listoflecture
 }
+
+
+\iffancyhead
+    \RequirePackage{fancyhdr}
+    \pagestyle{fancy}
+
+    % LE: left even
+    % RO: right odd
+    % CE, CO: center even, center odd
+
+    \fancyhead[RO,LE]{\@lecture} % Right odd,  Left even
+    \fancyhead[RE,LO]{}          % Right even, Left odd
+
+    %%No fancy headers in the appendix (as there is no lecture)
+    \let\mkesslerlecturesoldappendix\appendix
+    \renewcommand\appendix{
+        \mkesslerlecturesoldappendix
+        \fancyhead[RO,LE]{}
+        \renewcommand{\headrulewidth}{0pt}
+    }
+\fi