From: Vincent Vanwaelscappel <vincent@cubedesigners.com>
Date: Wed, 28 Jun 2017 17:33:56 +0000 (+0200)
Subject: #1471
X-Git-Url: http://git.cubedesigners.com/?a=commitdiff_plain;h=1edbe75bf8d72023e639cff788c9c04df5c4d936;p=fluidbook-html5.git

#1471
---

diff --git a/js/libs/fluidbook/fluidbook.touch.js b/js/libs/fluidbook/fluidbook.touch.js
index ac1b824e..85a2d464 100644
--- a/js/libs/fluidbook/fluidbook.touch.js
+++ b/js/libs/fluidbook/fluidbook.touch.js
@@ -17,12 +17,16 @@ FluidbookTouch.prototype = {
     init: function () {
         var $this = this;
 
-        // Disable native zoom
-        document.addEventListener('touchmove', function (event) {
-            if (event.scale !== 1) {
-                event.preventDefault();
-            }
-        }, false);
+        // Disable native zoom #1471
+        if (this.fluidbook.support.iOS) {
+            document.addEventListener('touchmove', function (event) {
+                event = event.originalEvent || event;
+                if (event.scale != undefined && event.scale !== 1) {
+                    event.preventDefault();
+                }
+            }, false);
+        }
+
 
         $(this.fluidbook).on('fluidbook.page.change.end', function () {
             $this.resetSlide();