Chapter 21 Example 3

/**
 * Copyright actionscriptbible ( http://wonderfl.net/user/actionscriptbible )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/tJmh
 */

package {
  import com.actionscriptbible.Example;
  import flash.events.MouseEvent;
  
  public class ch21ex3 extends Example {
    public function ch21ex3() {
      var circ:ClickableCircle = new ClickableCircle();
      circ.name = "Circle";
      circ.x = circ.y = 100;
      addChild(circ);

      circ.addEventListener(MouseEvent.CLICK, onClick);
    }
    
    protected function onClick(event:MouseEvent):void {
      trace(event.target.name + " clicked at " + 
            event.localX + "," + event.localY);
    }
  }
}
import flash.display.Sprite;
import flash.events.MouseEvent;
class ClickableCircle extends Sprite {
  public function ClickableCircle(color:uint = 0, size:Number = 50) {
    graphics.beginFill(color, 0.25);
    graphics.drawCircle(0, 0, size);
    graphics.endFill();
    buttonMode = true;
    doubleClickEnabled = true;
    addEventListener(MouseEvent.DOUBLE_CLICK, onDoubleClick);
  }
  protected function onDoubleClick(event:MouseEvent):void {
    alpha *= 0.5;
    if (alpha < 0.1) alpha = 1;
  }
}