108 lines
2.4 KiB
JavaScript
108 lines
2.4 KiB
JavaScript
(function($) {
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var Swipe = function(el) {
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var self = this;
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this.el = $(el);
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this.pos = { start: { x: 0, y: 0 }, end: { x: 0, y: 0 } };
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this.startTime;
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el.on('touchstart', function(e) { self.touchStart(e); });
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el.on('touchmove', function(e) { self.touchMove(e); });
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el.on('touchend', function(e) { self.swipeEnd(); });
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el.on('mousedown', function(e) { self.mouseDown(e); });
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};
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Swipe.prototype = {
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touchStart: function(e) {
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var touch = e.originalEvent.touches[0];
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this.swipeStart(e, touch.pageX, touch.pageY);
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},
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touchMove: function(e) {
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var touch = e.originalEvent.touches[0];
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this.swipeMove(e, touch.pageX, touch.pageY);
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},
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mouseDown: function(e) {
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var self = this;
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this.swipeStart(e, e.pageX, e.pageY);
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this.el.on('mousemove', function(e) { self.mouseMove(e); });
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this.el.on('mouseup', function() { self.mouseUp(); });
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},
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mouseMove: function(e) {
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this.swipeMove(e, e.pageX, e.pageY);
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},
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mouseUp: function(e) {
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this.swipeEnd(e);
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this.el.off('mousemove');
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this.el.off('mouseup');
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},
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swipeStart: function(e, x, y) {
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this.pos.start.x = x;
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this.pos.start.y = y;
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this.pos.end.x = x;
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this.pos.end.y = y;
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this.startTime = new Date().getTime();
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this.trigger('swipeStart', e);
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},
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swipeMove: function(e, x, y) {
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this.pos.end.x = x;
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this.pos.end.y = y;
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this.trigger('swipeMove', e);
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},
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swipeEnd: function(e) {
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this.trigger('swipeEnd', e);
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},
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trigger: function(e, originalEvent) {
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var self = this;
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var
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event = $.Event(e),
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x = self.pos.start.x - self.pos.end.x,
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y = self.pos.end.y - self.pos.start.y,
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radians = Math.atan2(y, x),
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direction = 'up',
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distance = Math.round(Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2))),
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angle = Math.round(radians * 180 / Math.PI),
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speed = Math.round(distance / ( new Date().getTime() - self.startTime ) * 1000);
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if ( angle < 0 ) {
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angle = 360 - Math.abs(angle);
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}
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if ( ( angle <= 45 && angle >= 0 ) || ( angle <= 360 && angle >= 315 ) ) {
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direction = 'left';
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} else if ( angle >= 135 && angle <= 225 ) {
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direction = 'right';
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} else if ( angle > 45 && angle < 135 ) {
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direction = 'down';
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}
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event.originalEvent = originalEvent;
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event.swipe = { x: x, y: y, direction: direction, distance: distance, angle: angle, speed: speed };
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$(self.el).trigger(event);
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}
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};
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$.fn.swipe = function() {
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var swipe = new Swipe(this);
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return this;
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};
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})(jQuery); |