ext-base-region-min.js

Ext JS是一个创建丰富互联网应用程序的跨浏览器的JavaScrip库。它包含：高效率

/*
 * Ext JS Library 3.0 Pre-alpha
 * Copyright(c) 2006-2008, Ext JS, LLC.
 * [e-mail]
 * 
 * http://extjs.com/license
 */


Ext.lib.Region=function(t,r,b,l){var me=this;me.top=t;me[1]=t;me.right=r;me.bottom=b;me.left=l;me[0]=l;};Ext.lib.Region.prototype={contains:function(region){var me=this;return(region.left>=me.left&&region.right<=me.right&&region.top>=me.top&&region.bottom<=me.bottom);},getArea:function(){var me=this;return((me.bottom-me.top)*(me.right-me.left));},intersect:function(region){var me=this,t=Math.max(me.top,region.top),r=Math.min(me.right,region.right),b=Math.min(me.bottom,region.bottom),l=Math.max(me.left,region.left);if(b>=t&&r>=l){return new Ext.lib.Region(t,r,b,l);}},union:function(region){var me=this,t=Math.min(me.top,region.top),r=Math.max(me.right,region.right),b=Math.max(me.bottom,region.bottom),l=Math.min(me.left,region.left);return new Ext.lib.Region(t,r,b,l);},constrainTo:function(r){var me=this;me.top=me.top.constrain(r.top,r.bottom);me.bottom=me.bottom.constrain(r.top,r.bottom);me.left=me.left.constrain(r.left,r.right);me.right=me.right.constrain(r.left,r.right);return me;},adjust:function(t,l,b,r){var me=this;me.top+=t;me.left+=l;me.right+=r;me.bottom+=b;return me;}};Ext.lib.Region.getRegion=function(el){var p=Ext.lib.Dom.getXY(el),t=p[1],r=p[0]+el.offsetWidth,b=p[1]+el.offsetHeight,l=p[0];return new Ext.lib.Region(t,r,b,l);};