利用Bitmap让TextField对象旋转，利用Sprite容器让Bitmap对象可以被鼠标拖拽

由于不能直接通过改变TextField对像的rotation属性来让其旋转(貌似没有这个属性)，可以使用BitmapData和Bitmap类来做到。
看一下Bitmap所继承的类就可以知道其不是继承自InteractiveObject，所以不支持使用鼠标和键盘与之交互，可以利用最轻量级的Sprite容器做到
代码里有个单独的sprite对象circle进行比较。

package {
import flash.text.TextField;
import flash.text.TextFormat;
import flash.text.TextFormatAlign;
import flash.display.Sprite;
import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.display.MovieClip;
import flash.display.Graphics;
import flash.events.Event;
import flash.events.MouseEvent;
import flash.geom.Point;

public class test extends Sprite {
public var singleWordText:TextField;
private var bitmap:BitmapData;
private var map:Bitmap;
private var circle:Sprite;
private var container:Sprite;

private var clickOffset:Point=null;
private var clickOffsetcircle:Point=null;

public function test() {

container=new Sprite();
addChild(container);

var format:TextFormat=new TextFormat();
format.font="Verdana";
format.color=0xFFFFFF;
format.size=20;
format.align=TextFormatAlign.LEFT;
//TextField要先申明样式后再输入字符
singleWordText=new TextField;
singleWordText.defaultTextFormat=format;
singleWordText.text="A";

bitmap=new BitmapData(20,25,true,0xcccccccc);
bitmap.draw(singleWordText,null,null,null,null,true);

map=new Bitmap(bitmap,"auto",true);
map.rotation=30;
//container.rotation=30;
container.addChild(map);
container.x=200;
container.y=200;

container.addEventListener(MouseEvent.MOUSE_DOWN, startTextDrag);
stage.addEventListener(MouseEvent.MOUSE_UP, stopTextDrag);
container.addEventListener(Event.ENTER_FRAME, dragText);

circle=new Sprite();

circle.graphics.beginFill(0xFF0000);
circle.graphics.lineStyle(2, 0xFF0000);
circle.graphics.drawCircle(400,200,30);
circle.graphics.endFill();

addChild(circle);

circle.addEventListener(MouseEvent.MOUSE_DOWN, startcircleDrag);
stage.addEventListener(MouseEvent.MOUSE_UP, stopcircleDrag);
circle.addEventListener(Event.ENTER_FRAME, dragcircle);

}

//------------------\text drag/--------------------------------
//drag map-------------
private function startTextDrag(event:MouseEvent) {
clickOffset = new Point(event.localX, event.localY);
}

// user released
private function stopTextDrag(event:MouseEvent) {
clickOffset = null;
}

// run every frame
private function dragText(event:Event) {
if (clickOffset != null) {// must be dragging

container.x = mouseX - clickOffset.x;
container.y = mouseY - clickOffset.y;

}
}
//drag circle-----------------
private function startcircleDrag(event:MouseEvent) {
clickOffsetcircle = new Point(event.localX, event.localY);
}

// user released
private function stopcircleDrag(event:MouseEvent) {
clickOffsetcircle = null;
}

// run every frame
private function dragcircle(event:Event) {
if (clickOffsetcircle != null) {// must be dragging
circle.x = mouseX - clickOffsetcircle.x;
circle.y = mouseY - clickOffsetcircle.y;
}
}
}
}