/** * hoverIntent is similar to jQuery's built-in "hover" function except that * instead of firing the onMouseOver event immediately, hoverIntent checks * to see if the user's mouse has slowed down (beneath the sensitivity * threshold) before firing the onMouseOver event. * * hoverIntent r5 // 2007.03.27 // jQuery 1.1.2+ * * * hoverIntent is currently available for use in all personal or commercial * projects under both MIT and GPL licenses. This means that you can choose * the license that best suits your project, and use it accordingly. * * // basic usage (just like .hover) receives onMouseOver and onMouseOut functions * $("ul li").hoverIntent( showNav , hideNav ); * * // advanced usage receives configuration object only * $("ul li").hoverIntent({ * sensitivity: 7, // number = sensitivity threshold (must be 1 or higher) * interval: 100, // number = milliseconds of polling interval * over: showNav, // function = onMouseOver callback (required) * timeout: 0, // number = milliseconds delay before onMouseOut function call * out: hideNav // function = onMouseOut callback (required) * }); * * @param f onMouseOver function || An object with configuration options * @param g onMouseOut function || Nothing (use configuration options object) * @author Brian Cherne */ var $ = jQuery.noConflict(); (function($) { $.fn.hoverIntent = function(f,g) { // default configuration options var cfg = { sensitivity: 7, interval: 100, timeout: 0 }; // override configuration options with user supplied object cfg = $.extend(cfg, g ? { over: f, out: g } : f ); // 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.abs(pX-cX) + Math.abs(pY-cY) ) < cfg.sensitivity ) { $(ob).unbind("mousemove",track); // set hoverIntent state to true (so mouseOut can be called) ob.hoverIntent_s = 1; 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 = 0; return cfg.out.apply(ob,[ev]); }; // A private function for handling mouse 'hovering' var handleHover = function(e) { // next three lines copied from jQuery.hover, ignore children onMouseOver/onMouseOut var p = (e.type == "mouseover" ? e.fromElement : e.toElement) || e.relatedTarget; while ( p && p != this ) { try { p = p.parentNode; } catch(e) { p = this; } } if ( p == this ) { return false; } // copy objects to be passed into t (required for event object to be passed in IE) var ev = jQuery.extend({},e); var ob = this; // cancel hoverIntent timer if it exists if (ob.hoverIntent_t) { ob.hoverIntent_t = clearTimeout(ob.hoverIntent_t); } // else e.type == "onmouseover" if (e.type == "mouseover") { // 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).bind("mousemove",track); // start polling interval (self-calling timeout) to compare mouse coordinates over time if (ob.hoverIntent_s != 1) { ob.hoverIntent_t = setTimeout( function(){compare(ev,ob);} , cfg.interval );} // else e.type == "onmouseout" } else { // unbind expensive mousemove event $(ob).unbind("mousemove",track); // if hoverIntent state is true, then call the mouseOut function after the specified delay if (ob.hoverIntent_s == 1) { ob.hoverIntent_t = setTimeout( function(){delay(ev,ob);} , cfg.timeout );} } }; // bind the function to the two event listeners return this.mouseover(handleHover).mouseout(handleHover); }; })(jQuery); $(document).ready(function() { //On Hover Over function megaHoverOver() { $(this).find(".sub").stop().fadeTo('fast', 1).show(); //Find sub and fade it in (function($) { //Function to calculate total width of all ul's jQuery.fn.calcSubWidth = function() { rowWidth = 0; //Calculate row $(this).find("ul").each(function() { //for each ul... rowWidth += $(this).width(); //Add each ul's width together }); }; })(jQuery); if (jQuery(this).find(".row").length > 0) { //If row exists... var biggestRow = 0; jQuery(this).find(".row").each(function() { //for each row... jQuery(this).calcSubWidth(); //Call function to calculate width of all ul's //Find biggest row if (rowWidth > biggestRow) { biggestRow = rowWidth; } }); jQuery(this).find(".sub").css({ 'width': biggestRow }); //Set width jQuery(this).find(".row:last").css({ 'margin': '0' }); //Kill last row's margin } else { //If row does not exist... jQuery(this).calcSubWidth(); //Call function to calculate width of all ul's jQuery(this).find(".sub").css({ 'width': rowWidth }); //Set Width } } //On Hover Out function megaHoverOut() { $(this).find(".sub").stop().fadeTo('slow', 0, function() { //Fade to 0 opactiy $(this).hide(); //after fading, hide it }); } //Set custom configurations var config = { sensitivity: 2, // number = sensitivity threshold (must be 1 or higher) interval: 100, // number = milliseconds for onMouseOver polling interval over: megaHoverOver, // function = onMouseOver callback (REQUIRED) timeout: 500, // number = milliseconds delay before onMouseOut out: megaHoverOut // function = onMouseOut callback (REQUIRED) }; $("ul#topnav li .sub").css({ 'opacity': '0' }); //Fade sub nav to 0 opacity on default $("ul#topnav li").hoverIntent(config); //Trigger Hover intent with custom configurations }); $(function() { // Tabs $('#tabs').tabs(); });