Free ActionScript

/**
 * Draw Box class
 * ---------------------
 * VERSION: 1.0
 * DATE: 11/14/2010
 * AS3
 * UPDATES AND DOCUMENTATION AT: http://www.FreeActionScript.com
 **/
package com.freeactionscript
{
	import flash.display.DisplayObjectContainer;
	import flash.events.MouseEvent;
	import flash.display.Sprite;
	import flash.events.Event;
 
	public class Box extends Sprite
	{
		private var _canvas:DisplayObjectContainer;
		private var _startX:Number;
		private var _startY:Number;
		private var _endX:Number;
		private var _endY:Number;
 
		public function Box($canvas:DisplayObjectContainer, $startX:Number, $startY:Number)
		{			
			_canvas = $canvas;
			_startX = $startX;
			_startY = $startY;
			_endX = _canvas.mouseX;
			_endY = _canvas.mouseY;
 
			_canvas.addEventListener(MouseEvent.MOUSE_MOVE, onMouseMoveHandler);
			_canvas.addEventListener(MouseEvent.MOUSE_UP, onMouseUpHandler);
			_canvas.addEventListener(Event.ENTER_FRAME, onEnterFrameHandler);
		}
 
		private function onMouseMoveHandler(event:MouseEvent):void
		{
			_endX = _canvas.mouseX;
			_endY = _canvas.mouseY;
		}
 
		private function onMouseUpHandler(event:MouseEvent):void 
		{
			_canvas.removeEventListener(MouseEvent.MOUSE_MOVE, onMouseMoveHandler);			
			_canvas.removeEventListener(MouseEvent.MOUSE_UP, onMouseUpHandler);
			_canvas.removeEventListener(Event.ENTER_FRAME, onEnterFrameHandler);
		}
 
		private function onEnterFrameHandler(event:Event):void 
		{
			graphics.clear();
			graphics.lineStyle(2, 0x88B1CC);
			graphics.moveTo(_startX, _startY);
			graphics.beginFill(0x88B1CC, .25);
			graphics.lineTo(_endX, _startY);
			graphics.lineTo(_endX, _endY);
			graphics.lineTo(_startX, _endY);
			graphics.lineTo(_startX, _startY);
			graphics.endFill();
		}
	}
}