flash on 2015-3-23

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

package {
    import flash.events.MouseEvent;
    import flash.display.Sprite;
    public class FlashTest extends Sprite {
        private var tut:Tutorial;
        public function FlashTest() {
            // write as3 code here..
            tut = new Tutorial("Some text will be placed");
            addChild(tut);
        //    tut.style = 'bottom';
            tut.style = 'top';
        //    tut.style = 'left';
        //    tut.style = 'right';
            tut.field = stage.getRect(stage);
            
            stage.addEventListener(MouseEvent.MOUSE_MOVE, changeTarget);
        }
        private function changeTarget(e:MouseEvent):void{
            tut.tx = mouseX;
            tut.ty = mouseY;
        }
    }
}
import flash.geom.Rectangle;
import flash.geom.Point;
import flash.text.TextField;
import flash.display.Sprite;

Class {
    class Tutorial extends Sprite {
        private var tf:TextField = new TextField();
        private var canvas:Sprite = new Sprite();
        private var targetX:Number = 0;
        private var targetY:Number = 0;
        private var conectPoint:Point = new Point();
        private var field:Rectangle;
        public function Tutorial(text:String){
            tf.mouseEnabled = false;
            tf.autoSize = 'left';
            tf.text = text;
            addChild(canvas);
            addChild(tf);
            redrawCanvas();
        }
        private function redrawCanvas(color:uint=0xCCCCCC):void{
            canvas.graphics.clear();
            canvas.graphics.beginFill(color);
            canvas.graphics.drawRect(tf.x-5, tf.y-5, tf.width+10, tf.height+10);
            canvas.graphics.lineStyle(2, color);
            canvas.graphics.moveTo(conectPoint.x, conectPoint.y);
            canvas.graphics.lineTo(canvas.width/2, canvas.height/2);
        }
        public function set field(val:Rectangle):void{
            this.field = field;
        }

        public function set style(val:String):void{
            if(val=='bottom'){
                conectPoint.x = canvas.width/2;
                conectPoint.y = -15;
            }
            if(val=='top'){
                conectPoint.x = canvas.width/2;
                conectPoint.y = 5 + canvas.height;
            }
            if(val=='left'){
                conectPoint.x = -15;
                conectPoint.y = canvas.height/2;
            }
            if(val=='right'){
                conectPoint.x = 5 + canvas.width;
                conectPoint.y = canvas.height/2;
            }
            redrawCanvas();
        }
        public function set tx(val:Number):void{
            this.targetX = val;
            this.x = targetX-conectPoint.x;
        }
        public function set ty(val:Number):void{
            this.targetY = val;
            this.y = targetY-conectPoint.y;
        }
    }
}