package skins
{
	import flash.geom.Matrix;
	
	import mx.controls.scrollClasses.ScrollBar;
	import mx.skins.Border;
	import mx.utils.ColorUtil;

	public class VScrollTrack extends Border
	{
		
        private var backgroundColor: uint = 0xFFFFFF;
        private var backgroundColorAlt: uint = 0xFFFFFF;
        private var borderColor: uint = 0;
        private var borderThickness: uint = 1;
        private var borderAlpha: Number  = 1;
        private var backgroundAlpha: Number  = 1;        
		private var isUp: Boolean = false;
		
		override public function get measuredWidth():Number
        {
            return ScrollBar.THICKNESS;
        }
		
		override protected function updateDisplayList(unscaledWidth:Number, unscaledHeight:Number):void {
			graphics.clear();
		   	borderColor = getStyle('borderColor');
			backgroundColor = getStyle('fillColors')[0];
			backgroundColorAlt = ColorUtil.adjustBrightness(backgroundColor, -90);
 
			graphics.lineStyle(0, 0, 0);
			drawRoundRect(0, 0, unscaledWidth, unscaledHeight, 0, ColorUtil.adjustBrightness(backgroundColor, 90), 1);
			
			var matrix: Matrix = new Matrix();
			var thickness: Number = 4;
			matrix.createGradientBox(thickness, unscaledHeight - (unscaledWidth + 5)*2, 0, (unscaledWidth-thickness)/2, unscaledWidth + 5);
			
			drawRoundRect((unscaledWidth-thickness)/2, unscaledWidth + 5, thickness, unscaledHeight - (unscaledWidth + 5)*2,
				0, [backgroundColorAlt, ColorUtil.adjustBrightness(backgroundColor, 50)], [1, 1], matrix);   		   	
		}
	}
}