GSYH/plugins/zoomimage/js/utils.js

/**
 *
 * Utilities
 * Author: Stefan Petre www.eyecon.ro
 * 
 */
(function($) {
EYE.extend({
	getPosition : function(e, forceIt)
	{
		var x = 0;
		var y = 0;
		var es = e.style;
		var restoreStyles = false;
		if (forceIt && jQuery.curCSS(e,'display') == 'none') {
			var oldVisibility = es.visibility;
			var oldPosition = es.position;
			restoreStyles = true;
			es.visibility = 'hidden';
			es.display = 'block';
			es.position = 'absolute';
		}
		var el = e;
		if (el.getBoundingClientRect) { // IE
			var box = el.getBoundingClientRect();
			x = box.left + Math.max(document.documentElement.scrollLeft, document.body.scrollLeft) - 2;
			y = box.top + Math.max(document.documentElement.scrollTop, document.body.scrollTop) - 2;
		} else {
			x = el.offsetLeft;
			y = el.offsetTop;
			el = el.offsetParent;
			if (e != el) {
				while (el) {
					x += el.offsetLeft;
					y += el.offsetTop;
					el = el.offsetParent;
				}
			}
			if (jQuery.browser.safari && jQuery.curCSS(e, 'position') == 'absolute' ) {
				x -= document.body.offsetLeft;
				y -= document.body.offsetTop;
			}
			el = e.parentNode;
			while (el && el.tagName.toUpperCase() != 'BODY' && el.tagName.toUpperCase() != 'HTML') 
			{
				if (jQuery.curCSS(el, 'display') != 'inline') {
					x -= el.scrollLeft;
					y -= el.scrollTop;
				}
				el = el.parentNode;
			}
		}
		if (restoreStyles == true) {
			es.display = 'none';
			es.position = oldPosition;
			es.visibility = oldVisibility;
		}
		return {x:x, y:y};
	},
	getSize : function(e)
	{
		var w = parseInt(jQuery.curCSS(e,'width'), 10);
		var h = parseInt(jQuery.curCSS(e,'height'), 10);
		var wb = 0;
		var hb = 0;
		if (jQuery.curCSS(e, 'display') != 'none') {
			wb = e.offsetWidth;
			hb = e.offsetHeight;
		} else {
			var es = e.style;
			var oldVisibility = es.visibility;
			var oldPosition = es.position;
			es.visibility = 'hidden';
			es.display = 'block';
			es.position = 'absolute';
			wb = e.offsetWidth;
			hb = e.offsetHeight;
			es.display = 'none';
			es.position = oldPosition;
			es.visibility = oldVisibility;
		}
		return {w:w, h:h, wb:wb, hb:hb};
	},
	getClient : function(e)
	{
		var h, w;
		if (e) {
			w = e.clientWidth;
			h = e.clientHeight;
		} else {
			var de = document.documentElement;
			w = window.innerWidth || self.innerWidth || (de&&de.clientWidth) || document.body.clientWidth;
			h = window.innerHeight || self.innerHeight || (de&&de.clientHeight) || document.body.clientHeight;
		}
		return {w:w,h:h};
	},
	getScroll : function (e)
	{
		var t=0, l=0, w=0, h=0, iw=0, ih=0;
		if (e && e.nodeName.toLowerCase() != 'body') {
			t = e.scrollTop;
			l = e.scrollLeft;
			w = e.scrollWidth;
			h = e.scrollHeight;
		} else  {
			if (document.documentElement) {
				t = document.documentElement.scrollTop;
				l = document.documentElement.scrollLeft;
				w = document.documentElement.scrollWidth;
				h = document.documentElement.scrollHeight;
			} else if (document.body) {
				t = document.body.scrollTop;
				l = document.body.scrollLeft;
				w = document.body.scrollWidth;
				h = document.body.scrollHeight;
			}
			if (typeof pageYOffset != 'undefined') {
				t = pageYOffset;
				l = pageXOffset;
			}
			iw = self.innerWidth||document.documentElement.clientWidth||document.body.clientWidth||0;
			ih = self.innerHeight||document.documentElement.clientHeight||document.body.clientHeight||0;
		}
		return { t: t, l: l, w: w, h: h, iw: iw, ih: ih };
	},
	getMargins : function(e, toInteger)
	{
		var t = jQuery.curCSS(e,'marginTop') || '';
		var r = jQuery.curCSS(e,'marginRight') || '';
		var b = jQuery.curCSS(e,'marginBottom') || '';
		var l = jQuery.curCSS(e,'marginLeft') || '';
		if (toInteger)
			return {
				t: parseInt(t, 10)||0,
				r: parseInt(r, 10)||0,
				b: parseInt(b, 10)||0,
				l: parseInt(l, 10)
			};
		else
			return {t: t, r: r,	b: b, l: l};
	},
	getPadding : function(e, toInteger)
	{
		var t = jQuery.curCSS(e,'paddingTop') || '';
		var r = jQuery.curCSS(e,'paddingRight') || '';
		var b = jQuery.curCSS(e,'paddingBottom') || '';
		var l = jQuery.curCSS(e,'paddingLeft') || '';
		if (toInteger)
			return {
				t: parseInt(t, 10)||0,
				r: parseInt(r, 10)||0,
				b: parseInt(b, 10)||0,
				l: parseInt(l, 10)
			};
		else
			return {t: t, r: r,	b: b, l: l};
	},
	getBorder : function(e, toInteger)
	{
		var t = jQuery.curCSS(e,'borderTopWidth') || '';
		var r = jQuery.curCSS(e,'borderRightWidth') || '';
		var b = jQuery.curCSS(e,'borderBottomWidth') || '';
		var l = jQuery.curCSS(e,'borderLeftWidth') || '';
		if (toInteger)
			return {
				t: parseInt(t, 10)||0,
				r: parseInt(r, 10)||0,
				b: parseInt(b, 10)||0,
				l: parseInt(l, 10)||0
			};
		else
			return {t: t, r: r,	b: b, l: l};
	},
	traverseDOM : function(nodeEl, func)
	{
		func(nodeEl);
		nodeEl = nodeEl.firstChild;
		while(nodeEl){
			EYE.traverseDOM(nodeEl, func);
			nodeEl = nodeEl.nextSibling;
		}
	},
	getInnerWidth :  function(el, scroll) {
		var offsetW = el.offsetWidth;
		return scroll ? Math.max(el.scrollWidth,offsetW) - offsetW + el.clientWidth:el.clientWidth;
	},
	getInnerHeight : function(el, scroll) {
		var offsetH = el.offsetHeight;
		return scroll ? Math.max(el.scrollHeight,offsetH) - offsetH + el.clientHeight:el.clientHeight;
	},
	getExtraWidth : function(el) {
		if($.boxModel)
			return (parseInt($.curCSS(el, 'paddingLeft'))||0)
				+ (parseInt($.curCSS(el, 'paddingRight'))||0)
				+ (parseInt($.curCSS(el, 'borderLeftWidth'))||0)
				+ (parseInt($.curCSS(el, 'borderRightWidth'))||0);
		return 0;
	},
	getExtraHeight : function(el) {
		if($.boxModel)
			return (parseInt($.curCSS(el, 'paddingTop'))||0)
				+ (parseInt($.curCSS(el, 'paddingBottom'))||0)
				+ (parseInt($.curCSS(el, 'borderTopWidth'))||0)
				+ (parseInt($.curCSS(el, 'borderBottomWidth'))||0);
		return 0;
	},
	isChildOf: function(parentEl, el, container) {
		if (parentEl == el) {
			return true;
		}
		if (!el || !el.nodeType || el.nodeType != 1) {
			return false;
		}
		if (parentEl.contains && !$.browser.safari) {
			return parentEl.contains(el);
		}
		if ( parentEl.compareDocumentPosition ) {
			return !!(parentEl.compareDocumentPosition(el) & 16);
		}
		var prEl = el.parentNode;
		while(prEl && prEl != container) {
			if (prEl == parentEl)
				return true;
			prEl = prEl.parentNode;
		}
		return false;
	},
	centerEl : function(el, axis)
	{
		var clientScroll = EYE.getScroll();
		var size = EYE.getSize(el);
		if (!axis || axis == 'vertically')
			$(el).css(
				{
					top: clientScroll.t + ((Math.min(clientScroll.h,clientScroll.ih) - size.hb)/2) + 'px'
				}
			);
		if (!axis || axis == 'horizontally')
			$(el).css(
				{
					left: clientScroll.l + ((Math.min(clientScroll.w,clientScroll.iw) - size.wb)/2) + 'px'
				}
			);
	}
});
if (!$.easing.easeout) {
	$.easing.easeout = function(p, n, firstNum, delta, duration) {
		return -delta * ((n=n/duration-1)*n*n*n - 1) + firstNum;
	};
}
	
})(jQuery);