<div style="margin: auto;width: 100%;height: 100%;" class="egret-player" id="gameDiv"

         data-entry-class="Main"

         data-orientation="portrait"

         data-scale-mode="fixedWidth"

         data-frame-rate="30"

         data-content-width="640"

         data-content-height="1136"

         data-show-paint-rect="false"

         data-multi-fingered="2"

         data-show-fps="false" data-show-log="false"

         data-show-fps-style="x:0,y:0,size:12,textColor:0xffffff,bgAlpha:0.9">

    </div>

/**

 * 生成<img>标签二维码

 * @author chenkai

 * @date 2016/12/26

 */

class QRCode{

    /**二维码img标签*/

    private myImg: HTMLImageElement;

    /**二维码图片地址*/

    private imgUrl:string;

    /**Egret中eui.Image二维码图片，用于定位*/

    private codeImg:egret.DisplayObject;

    /**重置位置*/

    private onResize(){

        console.log("屏幕旋转，重置二维码位置");

        if(this.imgUrl && this.codeImg){

            this.showCode(this.imgUrl,this.codeImg);

        }

    }

    /**

     * 显示二维码

     * imgUrl 二维码图片地址

     * codeImg egret中二维码图片 (二维码图片容器必须和stage相等高宽)

     */

    public showCode(imgUrl: string, codeImg: egret.DisplayObject): void {

        this.imgUrl = imgUrl;

        this.codeImg = codeImg;

　　　　 //横竖屏旋转，重置二维码位置

        App.StageUtils.getStage().addEventListener(  //这里的App.StageUtils是我自定义的可全局访问的stage，可以替换成你自己的stage

            egret.StageOrientationEvent.ORIENTATION_CHANGE,this.onResize,this);

        //二维码不存在，则创建一个

        if(this.myImg == null){

            var gameDiv = document.getElementById("gameDiv");

            this.myImg = document.createElement("img");

            this.myImg.src = imgUrl;

            this.myImg.style.position = "absolute";

            this.myImg.style.display = "none";

            gameDiv.appendChild(this.myImg);

        }

        //竖屏

        if(document.body.clientWidth < document.body.clientHeight){

            var wScale = document.body.clientWidth / App.StageUtils.stageWidth;

            var hScale = document.body.clientHeight / App.StageUtils.stageHeight;

            this.myImg.style.width = codeImg.width * wScale + "px";

            this.myImg.style.height = codeImg.height * hScale + "px";

            this.myImg.style.left = codeImg.x * wScale + "px";

            this.myImg.style.top = codeImg.y * hScale + "px";

            this.myImg.style.display = "inline";

        //横屏

        }else{

            var wScale = document.body.clientWidth / App.StageUtils.stageHeight;

            var hScale = document.body.clientHeight / App.StageUtils.stageWidth;

            this.myImg.style.width = codeImg.height*wScale + "px";

            this.myImg.style.height = codeImg.width*hScale + "px";

            this.myImg.style.top = (App.StageUtils.stageWidth - codeImg.x - codeImg.width)*hScale + "px";

            this.myImg.style.left = codeImg.y*wScale + "px";

            this.myImg.style.display = "inline";

        }

    }

    /**隐藏二维码*/

    public hideCode(): void {

        if(this.myImg) {

            this.myImg.style.display = "none";

        }

    }

    /**销毁*/

    public onDestroy(){

        App.StageUtils.getStage().removeEventListener(egret.StageOrientationEvent.ORIENTATION_CHANGE,this.onResize,this);

        this.codeImg = null;

    }

}

var codeImg:eui.Image;    //exml上二维码图片

var qrCode:QRCode = new QRCode();

qrCode.showCode("resource/assets/Button/button_down.png", codeImg);  //button_down.png 随便找的一个蓝色小方块图片