scale9grid doesn´t work

programming flash
1

Hi to all,

i´ve got a problem with the scale9grid and can´t figure out why it dosen´t work for me.

class:


package {
    import flash.display.Sprite;
    import flash.display.Shape;
    import flash.display.LineScaleMode;
    import flash.display.JointStyle;
    import flash.events.Event;
    import flash.geom.Matrix;
    
    import flash.geom.Rectangle;
    import marek.Scale9Helper;


    public class RoundedRectangle extends Sprite {
        private var s:Shape = new Shape;
        private var regX:Number = 0;
        private var regY:Number = 0;
        //
        private var _sWidth:uint = 100;
        private var _sHeight:uint = 100;
        private var _sRadius:Number = 0;
        private var _strokeS:Number = 0;
        private var _strokeC:uint = 0xFF0000;
        private var _fillInC:uint = 0xFFFFFF;
        //
        private var grid:Rectangle;
        //
        
        public function set cornerRadius(value:Number):void {
            this._sRadius = value;
            invalidate();
        }

        public function set strokeSize(value:Number):void {
            this._strokeS = value;
            invalidate();
        }

        private function invalidate():void {
            this.addEventListener(Event.ENTER_FRAME, redraw);
        }

        private function redraw(e:Event = null):void {
            s.removeEventListener(Event.ENTER_FRAME, redraw);
            s.graphics.clear();
            s.graphics.beginFill(_fillInC);
            s.graphics.lineStyle(_strokeS,_strokeC,1,false,LineScaleMode.NORMAL,null,JointStyle.MITER);
            s.graphics.drawRoundRect(0, 0, _sWidth, _sHeight, _sRadius, _sRadius);
            s.graphics.endFill();
            
grid = new Rectangle( 20, 20, s.width - ( 20 << 1 ), s.height - ( 20 << 1 ) );

s.scale9Grid = grid;
            // set registration point to the middle of the object
            regX = (s.width >> 1) - (_strokeS >> 1);
            regY = (s.height >> 1) - (_strokeS >> 1);
            s.transform.matrix = new Matrix(1,0,0,1, -regX, -regY);
            addChild(s);
        }
    }
}

with this class i draw a rect with rounded corner.
this class is used on the main class:

main class:


addChild(_pImg = new RoundedRectangle());
            _pImg.x = 100;
            _pImg.y = 100;
            _pImg.cornerRadius = 45;
            _pImg.strokeSize = 0;

code - scale function (i´ve shorten this):


....
var dist = Point.distance(new Point(mouseX,mouseY),_targCenter);
        
_target.scaleX = dist / _radius
...

i tried with and without stroke, but when i scale the mc it´s corner get´s streched - why?

maybe someone can give me an hint.

greets marek