startDrag() для плеера

[telit]

Значит задача состоит в том, чтобы сделать плавный ползунок( с помощью Drag ), например для контроля уровня звука или pan.

....
        public function CoolPlayer(  ) {

            _volumeControl = new VolumeControl(  );
            _volumeControl.x = 45;
            _volumeControl.y = 68;
            addChild(_volumeControl);
            _volumeControl.addEventListener(Event.CHANGE, 
                                           onTransform);

            _panControl = new PanControl(  );
            _panControl.x = 164;
            _panControl.y = 68;
            addChild(_panControl);
            _panControl.addEventListener(Event.CHANGE,
                                        onTransform);
}
        
        public function onTransform(event:Event):void
        {
            // Get volume and pan data from controls
            // and apply to a new SoundTransform object
            _channel.soundTransform = new SoundTransform(
                                         _volumeControl.volume, 
                                         _panControl.pan);
        }

import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.display.Sprite;
import flash.events.Event;
import flash.events.MouseEvent;
import flash.filters.DropShadowFilter;
import flash.geom.Rectangle;

class VolumeControl extends Sprite {
    public var volume:Number = 1.0;
    
    public function VolumeControl(  )
    {
        addEventListener(MouseEvent.CLICK, onClick);
        draw(  );
    }
    
    public function onClick(event:MouseEvent):void
    {
        // When user clicks the bar, set the volume
        volume = event.localX / 100;
        draw(  );
        dispatchEvent(new Event(Event.CHANGE));
    }
    
    private function draw(  ):void {
        // Draw a bar and the current volume position
        graphics.beginFill(0xcccccc);
        graphics.drawRect(0, 0, 102, 16);
        graphics.endFill(  );
        
        graphics.beginFill(0x000000);
        graphics.drawRect(volume * 100, 0, 2, 16);
    }
}

class PanControl extends Sprite {
    public var pan:Number = 0;
    
    public function PanControl(  )
    {
        addEventListener(MouseEvent.CLICK, onClick);
        draw(  );
    }
    
    public function onClick(event:MouseEvent):void
    {
        // When the user clicks bar, set pan
        pan = event.localX / 50 - 1;
        draw(  );
        dispatchEvent(new Event(Event.CHANGE));
    }

    private function draw(  ):void {
        // Draw the bar and current pan position
        graphics.beginFill(0xcccccc);
        graphics.drawRect(0, 0, 102, 16);
        graphics.endFill(  );
        
        graphics.beginFill(0x000000);
        graphics.drawRect(50 + pan * 50, 0, 2, 16);
    }
}