doevisualizations
Version:
Data Visualization Library based on RequireJS and D3.js (v4+)
126 lines (125 loc) • 4.75 kB
JavaScript
/*!
* jQuery++ - 2.0.2
* http://jquerypp.com
* Copyright (c) 2016 Bitovi
* Wed, 06 Apr 2016 00:03:57 GMT
* Licensed MIT
*/
/*jquerypp@2.0.2#event/hover/hover*/
define([
'jquery',
'../livehack/livehack.js'
], function ($) {
$.Hover = function () {
this._delay = $.Hover.delay;
this._distance = $.Hover.distance;
this._leave = $.Hover.leave;
};
$.extend($.Hover, {
delay: 100,
distance: 10,
leave: 0
});
$.extend($.Hover.prototype, {
delay: function (delay) {
this._delay = delay;
return this;
},
distance: function (distance) {
this._distance = distance;
return this;
},
leave: function (leave) {
this._leave = leave;
return this;
}
});
var event = $.event, handle = event.handle, onmouseenter = function (ev) {
var delegate = ev.delegateTarget || ev.currentTarget;
var selector = ev.handleObj.selector;
var pending = $.data(delegate, '_hover' + selector);
if (pending) {
if (!pending.forcing) {
pending.forcing = true;
clearTimeout(pending.leaveTimer);
var leaveTime = pending.leaving ? Math.max(0, pending.hover.leave - (new Date() - pending.leaving)) : pending.hover.leave;
var self = this;
setTimeout(function () {
pending.callHoverLeave();
onmouseenter.call(self, ev);
}, leaveTime);
}
return;
}
var loc = {
pageX: ev.pageX,
pageY: ev.pageY
}, dist = 0, timer, enteredEl = this, hovered = false, lastEv = ev, hover = new $.Hover(), leaveTimer, callHoverLeave = function () {
$.each(event.find(delegate, ['hoverleave'], selector), function () {
this.call(enteredEl, ev, hover);
});
cleanUp();
}, mousemove = function (ev) {
clearTimeout(leaveTimer);
dist += Math.pow(ev.pageX - loc.pageX, 2) + Math.pow(ev.pageY - loc.pageY, 2);
loc = {
pageX: ev.pageX,
pageY: ev.pageY
};
lastEv = ev;
}, mouseleave = function (ev) {
clearTimeout(timer);
if (hovered) {
if (hover._leave === 0) {
callHoverLeave();
} else {
clearTimeout(leaveTimer);
pending.leaving = new Date();
leaveTimer = pending.leaveTimer = setTimeout(function () {
callHoverLeave();
}, hover._leave);
}
} else {
cleanUp();
}
}, cleanUp = function () {
$(enteredEl).unbind('mouseleave', mouseleave);
$(enteredEl).unbind('mousemove', mousemove);
$.removeData(delegate, '_hover' + selector);
}, hoverenter = function () {
$.each(event.find(delegate, ['hoverenter'], selector), function () {
this.call(enteredEl, lastEv, hover);
});
hovered = true;
};
pending = {
callHoverLeave: callHoverLeave,
hover: hover
};
$.data(delegate, '_hover' + selector, pending);
$(enteredEl).bind('mousemove', mousemove).bind('mouseleave', mouseleave);
$.each(event.find(delegate, ['hoverinit'], selector), function () {
this.call(enteredEl, ev, hover);
});
if (hover._delay === 0) {
hoverenter();
} else {
timer = setTimeout(function () {
if (dist < hover._distance && $(enteredEl).queue().length == 0) {
hoverenter();
return;
} else {
dist = 0;
timer = setTimeout(arguments.callee, hover._delay);
}
}, hover._delay);
}
};
event.setupHelper([
'hoverinit',
'hoverenter',
'hoverleave',
'hovermove'
], 'mouseenter', onmouseenter);
return $;
});