From 96358bf61ab8ba3aae9a2f945ffa40cabff94d41 Mon Sep 17 00:00:00 2001
From: Florian Knoch <florian.knoch@stud.uni-bamberg.de>
Date: Tue, 20 Sep 2022 16:40:16 +0200
Subject: [PATCH] Add swipe support

---
 touch-support.js | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 touch-support.js

diff --git a/touch-support.js b/touch-support.js
new file mode 100644
index 0000000..ec6ead4
--- /dev/null
+++ b/touch-support.js
@@ -0,0 +1,27 @@
+// Reference: https://www.delftstack.com/howto/javascript/detect-finger-swipe-events-in-javascript/
+
+window.addEventListener('load', () => {
+  document.body.addEventListener('touchstart', onTouchStart);
+  document.body.addEventListener('touchmove', onTouchMove);
+  document.body.addEventListener('touchend', onTouchEnd);
+})
+
+var startX, startY, moveX, moveY;
+
+function onTouchStart(e){
+  startX = e.touches[0].clientX;
+  startY = e.touches[0].clientY;
+}
+
+function onTouchMove(e){
+  moveX = e.touches[0].clientX;
+  moveY = e.touches[0].clientY;
+}
+
+function onTouchEnd(){
+  if (startY+100 < moveY){
+    goToPreviousSlide();
+  } else if (startY-100 > moveY){
+    goToNextSlide();
+  }
+}
\ No newline at end of file