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1 change: 1 addition & 0 deletions README.md
Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,7 @@ A test page is included.
## How to use:
$(elm).on('tap', callbackFunction);
$(elm).on('doubleTap', callbackFunction);
$(elm).on('tapHold', callbackFunction);
// swipe
$(elm).on('swipe', function onSwipe(e, Dx, Dy){
// ...
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72 changes: 40 additions & 32 deletions jquery.touch.js
Original file line number Diff line number Diff line change
@@ -1,78 +1,86 @@
/*!
tap / double tap special event for jQuery
v 1.0.0
v 1.0.1
(c) 2014 Yair Even Or <http://dropthebit.com>
MIT-style license.
*/

;(function($){
"use strict";

var tapTimer,
moved = false, // flag to know if the finger had moved while touched the device
threshold = 250; // ms
timeStart = 0, //Variable used to help to know if the user is holding his finger on the device. It keeps the timestamp of first touch.
threshold = 250, // ms
thresholdHolding = 550; // ms

//////////////////////
// special events

$.event.special.doubleTap = {
setup : setup,
teardown : teardown,
handler : handler
teardown : teardown,
handler : handler
};

$.event.special.tap = {
setup : setup,
teardown : teardown,
handler : handler
};


$.event.special.tapHold = {
setup : setup,
teardown: teardown,
handler: handler
}

//////////////////////
// events methods

function setup(data, namespaces){
var elm = $(this);

if( elm.data('tap_event') == true )
return;

elm.bind('touchend.tap', handler)
.bind('touchmove.tap', function(){
moved = true;
.bind('touchstart.tap', handler)
//If the finger had moved while touched the device, it just will clean timeStart for a next touch.
.bind('touchmove.tap', function(event){
timeStart = 0;
event.preventDefault();
}).data('tap_event', true);
}

function teardown(namespaces) {
$(this).unbind('touchend.tap touchmove.tap');
$(this).unbind('touchend.tap touchmove.tap touchstart.tap');
}

function handler(event){
console.log(event);
if( moved ){ // reset
moved = false;
return false;
}

var elem = event.target,
if(event.type === 'touchstart'){
timeStart = event.timeStamp;
event.preventDefault();
} else {
var elem = event.target,
$elem = $(elem),
lastTouch = $elem.data('lastTouch') || 0,
now = event.timeStamp,
delta = now - lastTouch;

// double-tap condition
if( delta > 20 && delta < threshold ){
clearTimeout(tapTimer);
return $elem.data('lastTouch', 0).trigger('doubleTap');
// double-tap condition
if( delta > 20 && delta < threshold ){
clearTimeout(tapTimer);
return $elem.data('lastTouch', 0).trigger('doubleTap');
// tap-hold condition
} else if(timeStart > 0 && (now - timeStart) > thresholdHolding){
timeStart = 0;
return $elem.data('lastTouch', 0).trigger('tapHold');
} else
$elem.data('lastTouch', now);


tapTimer = setTimeout(function(){
$elem.trigger('tap');
}, threshold);
}
else
$elem.data('lastTouch', now);


tapTimer = setTimeout(function(){
$elem.trigger('tap');
}, threshold);
}

})(jQuery);


Expand Down Expand Up @@ -135,4 +143,4 @@
}
}
};
})(jQuery);
})(jQuery);