From 6ab72eae5150bdad00f80775877d0d49b2771bad Mon Sep 17 00:00:00 2001
From: Tuur Dutoit <tuur@datacamp.com>
Date: Fri, 18 Oct 2019 13:37:16 +0200
Subject: [PATCH] Add mobileViewDistance config key

---
 js/reveal.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/js/reveal.js b/js/reveal.js
index 5c026db7..17aabdfa 100644
--- a/js/reveal.js
+++ b/js/reveal.js
@@ -270,6 +270,10 @@
 			// Number of slides away from the current that are visible
 			viewDistance: 3,
 
+			// Number of slides away from the current that are visible on mobile devices
+			// It is advisable to set this to a lower number than viewDistance in order to save resources
+			mobileViewDistance: 2,
+
 			// The display mode that will be used to show slides
 			display: 'block',
 
@@ -3257,7 +3261,7 @@
 
 			// Limit view distance on weaker devices
 			if( isMobileDevice ) {
-				viewDistance = isOverview() ? 6 : 2;
+				viewDistance = isOverview() ? 6 : config.mobileViewDistance;
 			}
 
 			// All slides need to be visible when exporting to PDF