自定义布局工具

package com.zqgame.army.contrl
{
	/**
	 * 自定义的布局控件
	 *@author zhoujie
	 *@date 2011-7-8
	 **/
	import flash.display.Graphics;
	import flash.display.Sprite;
	
	public class JquLayoutUtil extends Sprite
	{
		private var rowcount:uint;
		private var colcount:uint;
		private var cspacing:uint;
		private var rspacing:uint;
		private var count:uint=0;
		private var _contentCount:uint=0;
		
		/**
		 * 构造函数
		 * 
		 * @prars 宽，高，颜色，横间距，竖间距
		 * 
		 * */
		public function JquLayoutUtil(_w:uint=0,_h:uint=0,color:uint=0x00000,_cspacing:uint=0,_rspacing:uint=0)
		{
			super();
			if(color!=0x000000){
				var gr:Graphics=this.graphics;
				gr.beginFill(color);
				gr.drawRect(0,0,_w,_h);
				gr.endFill();
			}
			this.cspacing=_cspacing;
			this.rspacing=_rspacing;
//			this.width=_w;
//			this.height=_h;
		}
		
		/**
		 * 改变布局
		 * @para
		 *  	row  横着放几个
		 * 		col  竖着放几个
		 * */
		public function setLayout(row:uint=0,col:uint=0):void
		{
			this.rowcount=row;
			this.colcount=col;
			_contentCount=row*col;
		}
		
		public function get contentCount():uint
		{
			return _contentCount;
		}
		
		public function addItem(item:Sprite):void
		{
			if(count>=rowcount*colcount)
			{
				return;
			}
			this.addChild(item);
			if(count==0)
			{
				item.x=0;
				item.y=0;
			}
			else
			{
				item.x=(count%colcount)*item.width+(count%colcount)*cspacing;
				item.y=Math.floor(count/colcount)*item.height+Math.floor(count/colcount)*rspacing;
			}
			count++;
		}
		
		public function removeAllItems():void
		{
			while(numChildren>0)
			{
				removeChildAt(0);
			}
			count=0;
		}
	}
}