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jquery.swipe.amd.js
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//Wrapped in an outer function to preserve global this
(function (root) { define(['jquery'], function () { (function () {
/*
* swipe 1.0.2 - jQuery UI Widget
* /~https://github.com/sgentile/jquery.swipe
* Copyright (c) 2011 Steve Gentile (http://twitter.com/stevemgentile)
* Dual licensed under the MIT and GPL licenses
*/
(function ($, debug) {
$.widget("ui.swipe", {
options: {
minSwipeLength: 65, // the shortest distance the user may swipe - the lower the number the more sensitive
minMouseSwipeLength: 300,
preventDefault: false, //used on TouchStart - setting this to true would negate things like button press from working, etc...
includeMouseSwipe: false //set to true to enable for mouse swipe
},
touchesCount: 0, //number of finders
startTouchXPosition: 0, //initial start location x
startTouchYPosition: 0, //initial start location x
currentXTouchPosition: 0,
currentYTouchPosition: 0,
swipeLength: 0,
previousPosition: {},
initialXMousePosition: null, //for mouse
initialYMousePosition: null, //for mouse
swiped: function (e, ui) { },
_create: function () {
var self = this;
var $touch = this.element;
$touch.bind({
"touchstart": function (event) {
//http://stackoverflow.com/questions/671498/jquery-live-removing-iphone-touch-event-attributes
self.touchStart(event.originalEvent);
},
"touchmove": function (event) {
self.touchMove(event.originalEvent);
},
"touchcancel": function (event) {
self.touchCancel(event.originalEvent);
},
"touchend": function (event) {
self.touchEnd(event.originalEvent, function (swipe) {
self._trigger("swiped", event, { swipeDirection: swipe });
});
}
});
//WIndows 8 touch support
if (window.navigator.msPointerEnabled) {
debug.info("msPointerEnabled");
$touch.on({
"MSPointerDown": function (event) {
//event.originalEvent.preventMouseEvent();
debug.info("MSPointerDown");
self.touchStart(event.originalEvent);
},
"MSPointerMove": function (event) {
debug.info("MSPointerMove");
self.touchMove(event.originalEvent);
},
"MSPointerOut": function (event) {
debug.info("MSPointerOut");
self.touchCancel(event.originalEvent);
},
"MSPointerUp": function (event) {
debug.info("MSPointerUp");
self.touchEnd(event.originalEvent, function (swipe) {
debug.info("MSPointerUp touchEnd");
self._trigger("swiped", event, { swipeDirection: swipe });
});
}
});
}
if (self.options.includeMouseSwipe) {
$touch.bind({
"mousedown": function (event) {
self.initialXMousePosition = event.pageX;
self.initialYMousePosition = event.pageY;
//event.stopPropagation();
event.preventDefault();
},
"mouseup": function (event) {
var x = event.pageX;
var y = event.pageY;
//event.stopPropagation();
event.preventDefault();
var mouseSwipeLength = self.calculateSwipeAngle(self.initialXMousePosition, x, self.initialYMousePosition, y);
// if the user swiped more than the minimum length, perform the appropriate action
if (mouseSwipeLength >= self.options.minMouseSwipeLength) {
var swipeAngle = self.getSwipeAngle(self.initialXMousePosition, x, self.initialYMousePosition, y);
var swipeDirection = self.determineSwipeDirection(swipeAngle);
if (swipeDirection != null) {
self._trigger('swiped', event, { swipeDirection: swipeDirection });
}
}
self.initialXMousePosition = null;
self.initialYMousePosition = null;
}
});
}
},
touchStart: function (event) {
var self = this;
if (self.options.preventDefault) {
// disable the standard ability to select the touched object
event.preventDefault();
}
if (window.navigator.msPointerEnabled) {
var currentPointers = event.getPointerList();
debug.info("touchStart touchesCount: " + currentPointers.length);
self.touchesCount = currentPointers.length;
debug.info('touch start length: ' + currentPointers.length);
if (currentPointers.length === 1) {
self.startTouchXPosition = event.pageX;
self.startTouchYPosition = event.pageY;
debug.info("touchstart " + self.startTouchXPosition + " " + self.startTouchYPosition);
} else {
self.touchCancel(event);
}
} else {
// get the total number of fingers touching the screen
self.touchesCount = event.touches.length;
// since we're looking for a swipe (single finger) and not a gesture (multiple fingers),
// check that only one finger was used
if (self.touchesCount == 1) {
// get the coordinates of the touch
self.startTouchXPosition = event.touches[0].pageX;
self.startTouchYPosition = event.touches[0].pageY;
} else {
// more than one finger touched so cancel
self.touchCancel(event);
}
}
},
touchMove: function (event) {
var self = this;
event.preventDefault();
if (window.navigator.msPointerEnabled) {
//var currentPointers = event.getPointerList();
debug.info('touch move length: ' + self.touchesCount);
if (self.touchesCount === 1) {
debug.info('touchmove');
self.currentXTouchPosition = event.pageX;
self.currentYTouchPosition = event.pageY;
} else {
self.touchCancel(event);
}
} else {
if (event.touches.length == 1) {
self.currentXTouchPosition = event.touches[0].pageX;
self.currentYTouchPosition = event.touches[0].pageY;
} else {
self.touchCancel(event);
}
}
},
touchEnd: function (event, callback) {
var self = this;
event.preventDefault();
if (window.navigator.msPointerEnabled) {
debug.info('calculate swipe length');
self.swipeLength = self.calculateSwipeAngle(self.startTouchXPosition, self.currentXTouchPosition, self.startTouchYPosition, self.currentYTouchPosition);
debug.info('swipe length ' + self.swipeLength);
// if the user swiped more than the minimum length, perform the appropriate action
if (self.swipeLength >= self.options.minSwipeLength) {
var swipeAngle = self.getSwipeAngle(self.startTouchXPosition, self.currentXTouchPosition, self.startTouchYPosition, self.currentYTouchPosition);
var swipeDirection = self.determineSwipeDirection(swipeAngle);
callback(swipeDirection); // callback with the swipe direction
self.touchCancel(event); // reset the variables
} else {
self.touchCancel(event);
}
} else {
// check to see if more than one finger was used and that there is an ending coordinate
if (self.touchesCount == 1 && self.currentXTouchPosition != 0) {
debug.info('calculate swipe length');
self.swipeLength = self.calculateSwipeAngle(self.startTouchXPosition, self.currentXTouchPosition, self.startTouchYPosition, self.currentYTouchPosition);
debug.info('swipe length ' + self.swipeLength);
// if the user swiped more than the minimum length, perform the appropriate action
if (self.swipeLength >= self.options.minSwipeLength) {
var swipeAngle = self.getSwipeAngle(self.startTouchXPosition, self.currentXTouchPosition, self.startTouchYPosition, self.currentYTouchPosition);
var swipeDirection = self.determineSwipeDirection(swipeAngle);
callback(swipeDirection); // callback with the swipe direction
self.touchCancel(event); // reset the variables
} else {
self.touchCancel(event);
}
} else {
// Still call the callback so it can be interpretted as a single touch or click.
self.swipeLength = 0;
callback('left', 0);
self.touchCancel(event);
}
}
},
touchCancel: function (event) {
var self = this;
// reset the variables back to default values
self.touchesCount = 0;
self.startTouchXPosition = 0;
self.startTouchYPosition = 0;
self.currentXTouchPosition = 0;
self.currentYTouchPosition = 0;
self.swipeLength = 0;
},
calculateSwipeAngle: function (startXPos, currentXPos, startYPos, currentYPos) {
// determine the length of the swipe using distance formula
return Math.round(Math.sqrt(Math.pow(currentXPos - startXPos, 2) + Math.pow(currentYPos - startYPos, 2)));
},
getSwipeAngle: function (startXPos, currentXPos, startYPos, currentYPos) {
var x = startXPos - currentXPos;
var y = currentYPos - startYPos;
var r = Math.atan2(y, x); //angle in radians (Cartesian system)
var swipeAngle = Math.round(r * 180 / Math.PI); //angle in degrees
if (swipeAngle < 0) { swipeAngle = 360 - Math.abs(swipeAngle); }
return swipeAngle;
},
determineSwipeDirection: function (swipeAngle) {
if ((swipeAngle <= 45) && (swipeAngle >= 0)) {
return 'left';
} else if ((swipeAngle <= 360) && (swipeAngle >= 315)) {
return 'left';
} else if ((swipeAngle >= 135) && (swipeAngle <= 225)) {
return 'right';
} else if ((swipeAngle > 45) && (swipeAngle < 135)) {
return 'down';
} else {
return 'up';
}
}
});
})(jQuery, console);
}.call(root));
}); }(this));