From 08cd951ea8410bc87e316e6c11d34a118437ba8b Mon Sep 17 00:00:00 2001
From: Marvin Borner
Date: Tue, 13 Jul 2021 19:40:17 +0200
Subject: Added colloq summary and final presentation

---
 presentation/js/utils/device.js | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 presentation/js/utils/device.js

(limited to 'presentation/js/utils/device.js')

diff --git a/presentation/js/utils/device.js b/presentation/js/utils/device.js
new file mode 100644
index 0000000..ec1034f
--- /dev/null
+++ b/presentation/js/utils/device.js
@@ -0,0 +1,15 @@
+const UA = navigator.userAgent;
+const testElement = document.createElement( 'div' );
+
+export const isMobile = /(iphone|ipod|ipad|android)/gi.test( UA ) ||
+						( navigator.platform === 'MacIntel' && navigator.maxTouchPoints > 1 ); // iPadOS
+
+export const isChrome = /chrome/i.test( UA ) && !/edge/i.test( UA );
+
+export const isAndroid = /android/gi.test( UA );
+
+// Flags if we should use zoom instead of transform to scale
+// up slides. Zoom produces crisper results but has a lot of
+// xbrowser quirks so we only use it in whitelisted browsers.
+export const supportsZoom = 'zoom' in testElement.style && !isMobile &&
+				( isChrome || /Version\/[\d\.]+.*Safari/.test( UA ) );
\ No newline at end of file
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