Created
July 22, 2013 17:49
-
-
Save YannickGagnon/6055968 to your computer and use it in GitHub Desktop.
Mootools Custom Events - Swipe
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
/* | |
--- | |
name: Swipe | |
description: Provides a custom swipe event for touch devices | |
authors: Christopher Beloch (@C_BHole), Christoph Pojer (@cpojer), Ian Collins (@3n) | |
license: MIT-style license. | |
requires: [Core/Element.Event, Custom-Event/Element.defineCustomEvent, Browser.Features.Touch] | |
provides: Swipe | |
... | |
*/ | |
(function(){ | |
var name = 'swipe', | |
distanceKey = name + ':distance', | |
cancelKey = name + ':cancelVertical', | |
dflt = 50; | |
var start = {}, disabled, active; | |
var clean = function(){ | |
active = false; | |
}; | |
var events = { | |
touchstart: function(event){ | |
if (event.touches.length > 1) return; | |
var touch = event.touches[0]; | |
active = true; | |
start = {x: touch.pageX, y: touch.pageY}; | |
}, | |
touchmove: function(event){ | |
if (disabled || !active) return; | |
var touch = event.changedTouches[0], | |
end = {x: touch.pageX, y: touch.pageY}; | |
if (this.retrieve(cancelKey) && Math.abs(start.y - end.y) > 10){ | |
active = false; | |
return; | |
} | |
var distance = this.retrieve(distanceKey, dflt), | |
deltaX = end.x - start.x, | |
deltaY = end.y - start.y, | |
isLeftSwipe = deltaX < -distance, | |
isRightSwipe = deltaX > distance; | |
// if swiping in diagonal, cancel swipe | |
if( (isLeftSwipe || isRightSwipe) && Math.abs(deltaY) > Math.abs(deltaX)) { | |
return; | |
} | |
if (!isRightSwipe && !isLeftSwipe) | |
return; | |
event.preventDefault(); | |
active = false; | |
event.direction = (isLeftSwipe ? 'left' : 'right'); | |
event.start = start; | |
event.end = end; | |
this.fireEvent(name, event); | |
}, | |
touchend: clean, | |
touchcancel: clean | |
}; |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment