Evan Theurer
12 years ago
6 changed files with 57 additions and 200 deletions
@ -1,115 +0,0 @@ |
|||||||
/*! |
|
||||||
* hoverIntent v1.8.1 // 2014.08.11 // jQuery v1.9.1+
|
|
||||||
* http://cherne.net/brian/resources/jquery.hoverIntent.html
|
|
||||||
* |
|
||||||
* You may use hoverIntent under the terms of the MIT license. Basically that |
|
||||||
* means you are free to use hoverIntent as long as this header is left intact. |
|
||||||
* Copyright 2007, 2014 Brian Cherne |
|
||||||
*/ |
|
||||||
|
|
||||||
/* hoverIntent is similar to jQuery's built-in "hover" method except that |
|
||||||
* instead of firing the handlerIn function immediately, hoverIntent checks |
|
||||||
* to see if the user's mouse has slowed down (beneath the sensitivity |
|
||||||
* threshold) before firing the event. The handlerOut function is only |
|
||||||
* called after a matching handlerIn. |
|
||||||
* |
|
||||||
* // basic usage ... just like .hover()
|
|
||||||
* .hoverIntent( handlerIn, handlerOut ) |
|
||||||
* .hoverIntent( handlerInOut ) |
|
||||||
* |
|
||||||
* // basic usage ... with event delegation!
|
|
||||||
* .hoverIntent( handlerIn, handlerOut, selector ) |
|
||||||
* .hoverIntent( handlerInOut, selector ) |
|
||||||
* |
|
||||||
* // using a basic configuration object
|
|
||||||
* .hoverIntent( config ) |
|
||||||
* |
|
||||||
* @param handlerIn function OR configuration object |
|
||||||
* @param handlerOut function OR selector for delegation OR undefined |
|
||||||
* @param selector selector OR undefined |
|
||||||
* @author Brian Cherne <brian(at)cherne(dot)net> |
|
||||||
*/ |
|
||||||
(function($) { |
|
||||||
$.fn.hoverIntent = function(handlerIn,handlerOut,selector) { |
|
||||||
|
|
||||||
// default configuration values
|
|
||||||
var cfg = { |
|
||||||
interval: 100, |
|
||||||
sensitivity: 6, |
|
||||||
timeout: 0 |
|
||||||
}; |
|
||||||
|
|
||||||
if ( typeof handlerIn === "object" ) { |
|
||||||
cfg = $.extend(cfg, handlerIn ); |
|
||||||
} else if ($.isFunction(handlerOut)) { |
|
||||||
cfg = $.extend(cfg, { over: handlerIn, out: handlerOut, selector: selector } ); |
|
||||||
} else { |
|
||||||
cfg = $.extend(cfg, { over: handlerIn, out: handlerIn, selector: handlerOut } ); |
|
||||||
} |
|
||||||
|
|
||||||
// instantiate variables
|
|
||||||
// cX, cY = current X and Y position of mouse, updated by mousemove event
|
|
||||||
// pX, pY = previous X and Y position of mouse, set by mouseover and polling interval
|
|
||||||
var cX, cY, pX, pY; |
|
||||||
|
|
||||||
// A private function for getting mouse position
|
|
||||||
var track = function(ev) { |
|
||||||
cX = ev.pageX; |
|
||||||
cY = ev.pageY; |
|
||||||
}; |
|
||||||
|
|
||||||
// A private function for comparing current and previous mouse position
|
|
||||||
var compare = function(ev,ob) { |
|
||||||
ob.hoverIntent_t = clearTimeout(ob.hoverIntent_t); |
|
||||||
// compare mouse positions to see if they've crossed the threshold
|
|
||||||
if ( Math.sqrt( (pX-cX)*(pX-cX) + (pY-cY)*(pY-cY) ) < cfg.sensitivity ) { |
|
||||||
$(ob).off("mousemove.hoverIntent",track); |
|
||||||
// set hoverIntent state to true (so mouseOut can be called)
|
|
||||||
ob.hoverIntent_s = true; |
|
||||||
return cfg.over.apply(ob,[ev]); |
|
||||||
} else { |
|
||||||
// set previous coordinates for next time
|
|
||||||
pX = cX; pY = cY; |
|
||||||
// use self-calling timeout, guarantees intervals are spaced out properly (avoids JavaScript timer bugs)
|
|
||||||
ob.hoverIntent_t = setTimeout( function(){compare(ev, ob);} , cfg.interval ); |
|
||||||
} |
|
||||||
}; |
|
||||||
|
|
||||||
// A private function for delaying the mouseOut function
|
|
||||||
var delay = function(ev,ob) { |
|
||||||
ob.hoverIntent_t = clearTimeout(ob.hoverIntent_t); |
|
||||||
ob.hoverIntent_s = false; |
|
||||||
return cfg.out.apply(ob,[ev]); |
|
||||||
}; |
|
||||||
|
|
||||||
// A private function for handling mouse 'hovering'
|
|
||||||
var handleHover = function(e) { |
|
||||||
// copy objects to be passed into t (required for event object to be passed in IE)
|
|
||||||
var ev = $.extend({},e); |
|
||||||
var ob = this; |
|
||||||
|
|
||||||
// cancel hoverIntent timer if it exists
|
|
||||||
if (ob.hoverIntent_t) { ob.hoverIntent_t = clearTimeout(ob.hoverIntent_t); } |
|
||||||
|
|
||||||
// if e.type === "mouseenter"
|
|
||||||
if (e.type === "mouseenter") { |
|
||||||
// set "previous" X and Y position based on initial entry point
|
|
||||||
pX = ev.pageX; pY = ev.pageY; |
|
||||||
// update "current" X and Y position based on mousemove
|
|
||||||
$(ob).on("mousemove.hoverIntent",track); |
|
||||||
// start polling interval (self-calling timeout) to compare mouse coordinates over time
|
|
||||||
if (!ob.hoverIntent_s) { ob.hoverIntent_t = setTimeout( function(){compare(ev,ob);} , cfg.interval );} |
|
||||||
|
|
||||||
// else e.type == "mouseleave"
|
|
||||||
} else { |
|
||||||
// unbind expensive mousemove event
|
|
||||||
$(ob).off("mousemove.hoverIntent",track); |
|
||||||
// if hoverIntent state is true, then call the mouseOut function after the specified delay
|
|
||||||
if (ob.hoverIntent_s) { ob.hoverIntent_t = setTimeout( function(){delay(ev,ob);} , cfg.timeout );} |
|
||||||
} |
|
||||||
}; |
|
||||||
|
|
||||||
// listen for mouseenter and mouseleave
|
|
||||||
return this.on({'mouseenter.hoverIntent':handleHover,'mouseleave.hoverIntent':handleHover}, cfg.selector); |
|
||||||
}; |
|
||||||
})(jQuery); |
|
||||||
Loading…
Reference in new issue