Release 2.6.0

dist/BigPicture.js

@@ -189,7 +189,7 @@ var BigPicture = (function () {
 
 	// create all needed methods / store dom elements on first use
 	function initialize() {
-		var startX;
+		var startX, isPinch;
 		// return close button elements
 		function createCloseButton(className) {
 			var el = document[createEl]('button');
@@ -224,28 +224,26 @@ var BigPicture = (function () {
 		container.onclick = close;
 		closeButton = createCloseButton('bp-x');
 		container[appendEl](closeButton);
-		// gallery swipe listeners
-		if ('ontouchstart' in window) {
+		// gallery touch listeners
+		if ('ontouchend' in window && window.visualViewport) {
 			supportsTouch = true;
 			container.ontouchstart = function (ref) {
+				var touches = ref.touches;
 				var changedTouches = ref.changedTouches;
 
+				isPinch = touches.length > 1;
 				startX = changedTouches[0].pageX;
 			};
-			container.ontouchmove = function (e) {
-				e.preventDefault();
-			};
 			container.ontouchend = function (ref) {
 				var changedTouches = ref.changedTouches;
 
-				if (!galleryOpen) {
-					return
+				if (galleryOpen && !isPinch && window.visualViewport.scale <= 1) {
+					var distX = changedTouches[0].pageX - startX;
+					// swipe right
+					distX < -30 && updateGallery(1);
+					// swipe left
+					distX > 30 && updateGallery(-1);
 				}
-				var distX = changedTouches[0].pageX - startX;
-				// swipe right
-				distX < -30 && updateGallery(1);
-				// swipe left
-				distX > 30 && updateGallery(-1);
 			};
 		}