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Zepto touch for jQuery
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(function($){ | |
var touch = {}, touchTimeout; | |
function parentIfText(node){ | |
return 'tagName' in node ? node : node.parentNode; | |
} | |
function swipeDirection(x1, x2, y1, y2){ | |
var xDelta = Math.abs(x1 - x2), yDelta = Math.abs(y1 - y2); | |
if (xDelta >= yDelta) { | |
return (x1 - x2 > 0 ? 'Left' : 'Right'); | |
} else { | |
return (y1 - y2 > 0 ? 'Up' : 'Down'); | |
} | |
} | |
$(document).ready(function(){ | |
$(document.body).bind('touchstart', function(e){ | |
var now = Date.now(), delta = now - (touch.last || now); | |
touch.target = parentIfText(e.originalEvent.touches[0].target); | |
touchTimeout && clearTimeout(touchTimeout); | |
touch.x1 = e.originalEvent.touches[0].pageX; | |
touch.y1 = e.originalEvent.touches[0].pageY; | |
if (delta > 0 && delta <= 250) touch.isDoubleTap = true; | |
touch.last = now; | |
}).bind('touchmove', function(e){ | |
touch.x2 = e.originalEvent.touches[0].pageX; | |
touch.y2 = e.originalEvent.touches[0].pageY; | |
}).bind('touchend', function(e){ | |
if (touch.isDoubleTap) { | |
$(touch.target).trigger('doubleTap'); | |
touch = {}; | |
} else if (touch.x2 > 0 || touch.y2 > 0) { | |
(Math.abs(touch.x1 - touch.x2) > 30 || Math.abs(touch.y1 - touch.y2) > 30) && | |
$(touch.target).trigger('swipe') && | |
$(touch.target).trigger('swipe' + (swipeDirection(touch.x1, touch.x2, touch.y1, touch.y2))); | |
touch.x1 = touch.x2 = touch.y1 = touch.y2 = touch.last = 0; | |
} else if ('last' in touch) { | |
touchTimeout = setTimeout(function(){ | |
touchTimeout = null; | |
$(touch.target).trigger('tap') | |
touch = {}; | |
}, 250); | |
} | |
}).bind('touchcancel', function(){ touch = {} }); | |
}); | |
['swipe', 'swipeLeft', 'swipeRight', 'swipeUp', 'swipeDown', 'doubleTap', 'tap'].forEach(function(m){ | |
$.fn[m] = function(callback){ return this.bind(m, callback) } | |
}); | |
})(jQuery); |
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