[ActionScript 3.0] AS3动态改变注册点

package
{
import flash.display.DisplayObject;
import flash.display.DisplayObjectContainer;
import flash.display.GradientType;
import flash.display.Shape;
import flash.display.Sprite;
import flash.events.MouseEvent;
import flash.geom.Matrix;
import flash.geom.Point;
import flash.text.TextField;
import flash.utils.getQualifiedClassName; /**
* @author Frost.Yen
* @E-mail 871979853@qq.com
* @create 2015-10-12 下午4:28:13
*
*/
[SWF(width="800",height="600")]
public class DynamicRegistration extends Sprite
{
private var _obj:Sprite;
private var _pot:Shape;
private var _value:Number = 1;
private var _property:Array = ["width","height","scaleX","scaleY","rotation"];
private var _currPro:String = "width";
public function DynamicRegistration()
{
initViews();
initEventListeners();
}
private function initViews():void
{
var matr:Matrix = new Matrix();
matr.createGradientBox(480, 100, 0, 0, 0); _pot = new Shape();
_obj = new Sprite();
_obj.graphics.beginGradientFill(GradientType.LINEAR,[0xFF0000, 0xFF00FF],[1,1],[0,255],matr);
_obj.graphics.drawRect(0,0,200,150);
_obj.graphics.endFill();
_obj.x = (stage.stageWidth - _obj.width )*0.5;
_obj.y = (stage.stageHeight - _obj.height)*0.5;
_pot.graphics.beginFill(0,.5);
_pot.graphics.drawCircle(0,0,5);
_pot.graphics.endFill();
_pot.x = _obj.x;
_pot.y = _obj.y;
for(var i:int = 0;i<_property.length;i++){
var pro:TextField = getButton(" "+_property[i]+" ",this,stage.stageWidth-100,150+30*i,_property[i]);
pro.addEventListener(MouseEvent.CLICK,onSelectProperty);
}
setProState(_currPro);
this.addChild(_obj);
this.addChild(_pot);
}
private function initEventListeners():void
{
_obj.addEventListener(MouseEvent.CLICK,onClick);
} private function onClick(e:MouseEvent):void
{
_value = _obj[_currPro];
switch(_currPro){
case _property[0]:
case _property[1]:
_value+=10;
break;
case _property[2]:
case _property[3]:
_value+=0.2;
break;
case _property[4]:
_value+=20;
break;
}
dynamicRegistration1(_obj,new Point(_obj.mouseX,_obj.mouseY),_currPro,_value);
_pot.x = mouseX;
_pot.y = mouseY;
}
private function onSelectProperty(e:MouseEvent):void
{
_currPro = e.currentTarget.name;
setProState(_currPro);
}
private function setProState(pro:String):void
{
for(var i:int = 0;i<_property.length;i++){
if(_property[i] == pro){
(this.getChildByName(_property[i]) as TextField).borderColor = 0x00ffff;
}else{
(this.getChildByName(_property[i]) as TextField).borderColor = 0x222222;
}
}
}
private function getButton(text:String,parent:Sprite,x:Number=0,y:Number=0,name:String=null):TextField
{
var textButton:TextField = new TextField();
textButton.autoSize = "left";
textButton.width = 110;
textButton.height = 38;
textButton.selectable = false;
textButton.border = true;
textButton.borderColor = 0x222222;
textButton.background = true;
textButton.backgroundColor = 0xaaaaaa;
textButton.htmlText = "<a href='event:#'>"+text+"</a>";
textButton.x = x;
textButton.y = y;
if(name!=null){
textButton.name = name;
}
parent.addChild(textButton);
return textButton;
} /**
* 动态改变注册点
* target 改变注册点的对象
* point 新的注册点
* pro 需要改变的属性
* value 新的属性值
*/
private function dynamicRegistration1(target:DisplayObject,point:Point,pro:String,value:Number):void
{
//转换为全局坐标
var A:Point=target.parent.globalToLocal(target.localToGlobal(point));
if(pro == "x"||pro == "y"){
target[pro] = value-point[pro];
}else{
target[pro]=value;
var B:Point = target.parent.globalToLocal(target.localToGlobal(point));
//把注册点从B点移到A点
target.x+=A.x-B.x;
target.y+=A.y-B.y;
}
}
}}