View Full Version : [FIXED-242] Pinch gesture is interpreted as swipe

26 Aug 2010, 5:01 AM
Sencha Touch version tested:

0.9 rev 3

only default ext-all.css

Platform tested against:

iOS 3.x
iOS 4

If you are doing a rather small pinch, but still a two-finger pinch, it can be interpreted as a swipe and rise that event instead of the pinch event. Might have to do with the plastic film on my iPad, but its still an issue.

Test Case:

Ext.ux.TouchPad = Ext.extend(Ext.Component, {
id: 'touchpad',
html: 'Touch here!',
fullscreen: true,
initComponent : function() {

afterRender: function() {

this.mon(this.el, {
swipe: this.handleEvent,
pinch: this.handleEvent,

handleEvent: function(e) {

glossOnIcon: false,
onReady: function () {

new Ext.Panel({
fullscreen: true,
title: 'Swipe/Pinch test',
items: new Ext.ux.TouchPad()

Steps to reproduce the problem:

Do a small two-finger pinch.
Check console log.

The result that was expected:

Pinch event would rise.

The result that occurs instead:

Sometimes the swipe event is raised instead.

Debugging already done:


Possible fix:

Change the if-case that determines if check for swipe is to be done, and include that no check should be done if its multiTouch.
Line 4674 in ext-touch-debug-w-comments.js

if (!track.scrolling && track.events.swipe && !me.multiTouch)

Jamie Avins
26 Aug 2010, 2:55 PM
Thank you for the report.

20 Sep 2010, 7:38 AM
This has been fixed in the new gesture system that will be part of the next release.