[FIX] web_responsive: Chrome Slow Scrolling

* Update to iScoll bleeding edge to fix #741

web_responsive/README.rst

@@ -53,6 +53,7 @@ this module.
 * Adding ``oe_main_menu_navbar`` ID to the top navigation bar triggers some
   great styles, but also `JavaScript that causes issues on mobile
   <https://github.com/OCA/web/pull/446#issuecomment-254827880>`_
+* Remove Chrome slow scrolling patch when iScroll is updated
 
 
 Bug Tracker

web_responsive/static/lib/js/iscroll-probe.5.2.0.js

@@ -1,4 +1,4 @@
-/*! iScroll v5.2.0 ~ (c) 2008-2016 Matteo Spinelli ~ http://cubiq.org/license */
+/*! iScroll v5.2.0-snapshot ~ (c) 2008-2017 Matteo Spinelli ~ http://cubiq.org/license */
 (function (window, document, Math) {
 var rAF = window.requestAnimationFrame	||
 	window.webkitRequestAnimationFrame	||
@@ -124,7 +124,8 @@ var utils = (function () {
 		transitionTimingFunction: _prefixStyle('transitionTimingFunction'),
 		transitionDuration: _prefixStyle('transitionDuration'),
 		transitionDelay: _prefixStyle('transitionDelay'),
-		transformOrigin: _prefixStyle('transformOrigin')
+		transformOrigin: _prefixStyle('transformOrigin'),
+		touchAction: _prefixStyle('touchAction')
 	});
 
 	me.hasClass = function (e, c) {
@@ -278,6 +279,39 @@ var utils = (function () {
 		}
 	};
 
+	me.getTouchAction = function(eventPassthrough, addPinch) {
+		var touchAction = 'none';
+		if ( eventPassthrough === 'vertical' ) {
+			touchAction = 'pan-y';
+		} else if (eventPassthrough === 'horizontal' ) {
+			touchAction = 'pan-x';
+		}
+		if (addPinch && touchAction != 'none') {
+			// add pinch-zoom support if the browser supports it, but if not (eg. Chrome <55) do nothing
+			touchAction += ' pinch-zoom';
+		}
+		return touchAction;
+	};
+
+	me.getRect = function(el) {
+		if (el instanceof SVGElement) {
+			var rect = el.getBoundingClientRect();
+			return {
+				top : rect.top,
+				left : rect.left,
+				width : rect.width,
+				height : rect.height
+			};
+		} else {
+			return {
+				top : el.offsetTop,
+				left : el.offsetLeft,
+				width : el.offsetWidth,
+				height : el.offsetHeight
+			};
+		}
+	};
+
 	return me;
 })();
 function IScroll (el, options) {
@@ -380,7 +414,7 @@ function IScroll (el, options) {
 }
 
 IScroll.prototype = {
-	version: '5.2.0',
+	version: '5.2.0-snapshot',
 
 	_init: function () {
 		this._initEvents();
@@ -726,15 +760,16 @@ IScroll.prototype = {
 	},
 
 	refresh: function () {
-		var rf = this.wrapper.offsetHeight;		// Force reflow
+		utils.getRect(this.wrapper);		// Force reflow
 
 		this.wrapperWidth	= this.wrapper.clientWidth;
 		this.wrapperHeight	= this.wrapper.clientHeight;
 
+		var rect = utils.getRect(this.scroller);
 /* REPLACE START: refresh */
 
-		this.scrollerWidth	= this.scroller.offsetWidth;
-		this.scrollerHeight	= this.scroller.offsetHeight;
+		this.scrollerWidth	= rect.width;
+		this.scrollerHeight	= rect.height;
 
 		this.maxScrollX		= this.wrapperWidth - this.scrollerWidth;
 		this.maxScrollY		= this.wrapperHeight - this.scrollerHeight;
@@ -758,6 +793,16 @@ IScroll.prototype = {
 		this.directionX = 0;
 		this.directionY = 0;
 
+		if(utils.hasPointer && !this.options.disablePointer) {
+			// The wrapper should have `touchAction` property for using pointerEvent.
+			this.wrapper.style[utils.style.touchAction] = utils.getTouchAction(this.options.eventPassthrough, true);
+
+			// case. not support 'pinch-zoom'
+			// https://github.com/cubiq/iscroll/issues/1118#issuecomment-270057583
+			if (!this.wrapper.style[utils.style.touchAction]) {
+				this.wrapper.style[utils.style.touchAction] = utils.getTouchAction(this.options.eventPassthrough, false);
+			}
+		}
 		this.wrapperOffset = utils.offset(this.wrapper);
 
 		this._execEvent('refresh');
@@ -842,11 +887,13 @@ IScroll.prototype = {
 		pos.top  -= this.wrapperOffset.top;
 
 		// if offsetX/Y are true we center the element to the screen
+		var elRect = utils.getRect(el);
+		var wrapperRect = utils.getRect(this.wrapper);
 		if ( offsetX === true ) {
-			offsetX = Math.round(el.offsetWidth / 2 - this.wrapper.offsetWidth / 2);
+			offsetX = Math.round(elRect.width / 2 - wrapperRect.width / 2);
 		}
 		if ( offsetY === true ) {
-			offsetY = Math.round(el.offsetHeight / 2 - this.wrapper.offsetHeight / 2);
+			offsetY = Math.round(elRect.height / 2 - wrapperRect.height / 2);
 		}
 
 		pos.left -= offsetX || 0;
@@ -1227,7 +1274,8 @@ IScroll.prototype = {
 				x = 0, y,
 				stepX = this.options.snapStepX || this.wrapperWidth,
 				stepY = this.options.snapStepY || this.wrapperHeight,
-				el;
+				el,
+				rect;
 
 			this.pages = [];
 
@@ -1267,7 +1315,8 @@ IScroll.prototype = {
 				n = -1;
 
 				for ( ; i < l; i++ ) {
-					if ( i === 0 || el[i].offsetLeft <= el[i-1].offsetLeft ) {
+					rect = utils.getRect(el[i]);
+					if ( i === 0 || rect.left <= utils.getRect(el[i-1]).left ) {
 						m = 0;
 						n++;
 					}
@@ -1276,16 +1325,16 @@ IScroll.prototype = {
 						this.pages[m] = [];
 					}
 
-					x = Math.max(-el[i].offsetLeft, this.maxScrollX);
-					y = Math.max(-el[i].offsetTop, this.maxScrollY);
-					cx = x - Math.round(el[i].offsetWidth / 2);
-					cy = y - Math.round(el[i].offsetHeight / 2);
+					x = Math.max(-rect.left, this.maxScrollX);
+					y = Math.max(-rect.top, this.maxScrollY);
+					cx = x - Math.round(rect.width / 2);
+					cy = y - Math.round(rect.height / 2);
 
 					this.pages[m][n] = {
 						x: x,
 						y: y,
-						width: el[i].offsetWidth,
-						height: el[i].offsetHeight,
+						width: rect.width,
+						height: rect.height,
 						cx: cx,
 						cy: cy
 					};
@@ -1822,7 +1871,7 @@ Indicator.prototype = {
 			utils.removeEvent(window, 'mouseup', this);
 		}
 
-		if ( this.options.defaultScrollbars ) {
+		if ( this.options.defaultScrollbars && this.wrapper.parentNode ) {
 			this.wrapper.parentNode.removeChild(this.wrapper);
 		}
 	},
@@ -1989,7 +2038,7 @@ Indicator.prototype = {
 			}
 		}
 
-		var r = this.wrapper.offsetHeight;	// force refresh
+		utils.getRect(this.wrapper);	// force refresh
 
 		if ( this.options.listenX ) {
 			this.wrapperWidth = this.wrapper.clientWidth;

web_responsive/static/src/js/web_responsive.js

@@ -108,7 +108,10 @@ odoo.define('web_responsive', function(require) {
                         'transform', 'matrix(1, 0, 0, 1, 0, ' + transform + ')'
                     );
                 };
+                // Scroll probe aggressiveness level
+                // 2 == always executes the scroll event except during momentum and bounce.
                 this.iScroll.options.probeType = 2;
+                // Set options because
                 this.iScroll.on('scroll', $.proxy(onIScroll, this));
             });
             this.initialized = true;