俗话说：拳不离手，曲不离口。学过的技能不用，放长了就生疏了，今天以前的同事问我：用户改变浏览器窗口尺寸时，flash中的图片如何重新定位于4个角上。花了近一刻钟才回忆想来:stage有Resize事件，呵呵
代码如下：
1.先把加载图片的逻辑封装一下
package {
import flash.display.Sprite;
import flash.display.Loader;
import flash.display.LoaderInfo;
import flash.net.URLRequest;
import flash.events.Event;
import flash.display.Bitmap;
import flash.events.IOErrorEvent;
import flash.system.LoaderContext;
public class LoadImage extends Sprite {
private var _imgWidth:int;
private var _imgHeight:int;
public function LoadImage(url:String,imgWidth:int=380,imgHeight:int=305) {
this._imgWidth = imgWidth;
this._imgHeight = imgHeight;
var _request:URLRequest = new URLRequest(url);
var _loader:Loader = new Loader();
var _lc:LoaderContext = new LoaderContext(true);
_loader.contentLoaderInfo.addEventListener(Event.COMPLETE,loadComplete);
_loader.contentLoaderInfo.addEventListener(IOErrorEvent.IO_ERROR,loadIO_Error);
_loader.load(_request,_lc);
}
private function loadComplete(e:Event):void
{
//trace("loadComplete");
var li:LoaderInfo = e.currentTarget as LoaderInfo;
var bmp:Bitmap = li.content as Bitmap;
bmp.height = _imgHeight;
bmp.width = _imgWidth;
addChild(bmp);
}
private function loadIO_Error(e:IOErrorEvent):void
{
trace("load error!");
}
}
}
2.主文档类
package {
import flash.display.MovieClip;
import flash.events.Event;
import flash.display.StageAlign;
import flash.display.StageScaleMode;
public class ResizeDemo extends MovieClip {
private var _top_left:LoadImage; //左上 的图片
private var _top_right:LoadImage; //右上 的图片
private var _bottom_left:LoadImage; //左下 的图片
private var _bottom_right:LoadImage; //右下 的图片
private var _center:LoadImage; //中心的图片
private var _WIDTH:int; //舞台的宽度
private var _HEIGHT:int; //舞台的高度
public function ResizeDemo() {
// constructor code
if (stage)
{
init();
}
else
{
stage.addEventListener(Event.ADDED_TO_STAGE,init);
}
}
private function init(e:Event=null)
{
stage.removeEventListener(Event.ADDED_TO_STAGE,init);
stage.addEventListener(Event.RESIZE,reSizeHandler);
stage.align = StageAlign.TOP_LEFT;
stage.scaleMode = StageScaleMode.NO_SCALE;
//加载图片
_top_left = new LoadImage("top_left.jpg",100,150);
_top_right = new LoadImage("top_right.jpg",100,150);
_bottom_left = new LoadImage("bottom_left.jpg",100,150);
_bottom_right = new LoadImage("bottom_right.jpg",100,150);
_center = new LoadImage("center.jpg",200,300);
addChild(_top_left);
addChild(_top_right);
addChild(_bottom_left);
addChild(_bottom_right);
addChild(_center);
adjustPosition();
}
private function reSizeHandler(e:Event=null)
{
adjustPosition();
}
//调整位置
private function adjustPosition()
{
_WIDTH = stage.stageWidth;
_HEIGHT = stage.stageHeight;
trace("_WIDTH =",_WIDTH);
trace("_HEIGHT =",_HEIGHT);
trace("_top_left.width =",_top_left.width);
//定位 左上的图片
_top_left.x = _top_left.y = 0;
//定位 右上的图片
_top_right.x = _WIDTH - _top_left.width;
_top_right.y = 0;
//定位 左下的图片
_bottom_left.x = 0;
_bottom_left.y = _HEIGHT - _bottom_left.height;
//定位 右下的图片
_bottom_right.x = _WIDTH - _bottom_right.width;
_bottom_right.y = _HEIGHT - _bottom_right.height;
//定位中心的图片
_center.x = (_WIDTH - _center.width)/2;
_center.y = (_HEIGHT - _center.height)/2;
}
}
}
截图二张：
