egret常用功能
<pre>
//////////////////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2014-present, Egret Technology.
// All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of the Egret nor the
// names of its contributors may be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY EGRET AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
// OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
// OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
// IN NO EVENT SHALL EGRET AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;LOSS OF USE, DATA,
// OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
// EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
//////////////////////////////////////////////////////////////////////////////////////
var offsetX:number;
var offsetY;
var panel;
class Main extends eui.UILayer {
protected createChildren(): void {
super.createChildren();
egret.lifecycle.addLifecycleListener((context) => {
// custom lifecycle plugin
})
egret.lifecycle.onPause = () => {
egret.ticker.pause();
}
egret.lifecycle.onResume = () => {
egret.ticker.resume();
}
//inject the custom material parser
//注入自定义的素材解析器
let assetAdapter = new AssetAdapter();
egret.registerImplementation("eui.IAssetAdapter", assetAdapter);
egret.registerImplementation("eui.IThemeAdapter", new ThemeAdapter());
this.runGame().catch(e => {
console.log(e);
})
}
private async runGame() {
await this.loadResource()
this.createGameScene();
const result = await RES.getResAsync("description_json")
this.startAnimation(result);
await platform.login();
const userInfo = await platform.getUserInfo();
console.log(userInfo);
}
private async loadResource() {
try {
const loadingView = new LoadingUI();
this.stage.addChild(loadingView);
await RES.loadConfig("resource/default.res.json", "resource/");
await this.loadTheme();
await RES.loadGroup("preload", 0, loadingView);
this.stage.removeChild(loadingView);
}
catch (e) {
console.error(e);
}
}
private loadTheme() {
return new Promise((resolve, reject) => {
// load skin theme configuration file, you can manually modify the file. And replace the default skin.
//加载皮肤主题配置文件,可以手动修改这个文件。替换默认皮肤。
let theme = new eui.Theme("resource/default.thm.json", this.stage);
theme.addEventListener(eui.UIEvent.COMPLETE, () => {
resolve();
}, this);
})
}
private textfield: egret.TextField;
/**
* 创建场景界面
* Create scene interface
*/
protected createGameScene(): void {
let sky = this.createBitmapByName("bg_jpg");
this.addChild(sky);
let stageW = this.stage.stageWidth;
let stageH = this.stage.stageHeight;
sky.width = stageW;
sky.height = stageH;
let topMask = new egret.Shape();
topMask.graphics.beginFill(0x000000, 0.5);
topMask.graphics.drawRect(0, 0, stageW, 172);
topMask.graphics.endFill();
topMask.y = 33;
this.addChild(topMask);
let icon: egret.Bitmap = this.createBitmapByName("egret_icon_png");
this.addChild(icon);
var icon_width=icon.width;
console.log(icon.width);
icon.anchorOffsetX = 52;
icon.x = 0;
icon.y = 0;
//手指触摸移动
//手指按到屏幕，触发 startMove 方法
icon.touchEnabled = true;
icon.addEventListener(egret.TouchEvent.TOUCH_TAP, this.onButtonClick, this);
icon.addEventListener(egret.TouchEvent.TOUCH_BEGIN,startMove,this);
//手指离开屏幕，触发 stopMove 方法
icon.addEventListener(egret.TouchEvent.TOUCH_END,stopMove,this);
function startMove(e:egret.TouchEvent):void{
//计算手指和圆形的距离
offsetX = e.stageX - icon.x;
offsetY = e.stageY - icon.y;
//手指在屏幕上移动，会触发 onMove 方法
this.stage.addEventListener(egret.TouchEvent.TOUCH_MOVE,onMove,this);
}
function stopMove(e:egret.TouchEvent) {console.log(22);
//手指离开屏幕，移除手指移动的监听
this.stage.removeEventListener(egret.TouchEvent.TOUCH_MOVE,onMove,this);
}
function onMove(e:egret.TouchEvent):void{
//通过计算手指在屏幕上的位置，计算当前对象的坐标，达到跟随手指移动的效果
icon.x = e.stageX - offsetX;
icon.y = e.stageY - offsetY;
}
let line = new egret.Shape();
line.graphics.lineStyle(2, 0xffffff);
line.graphics.moveTo(0, 0);
line.graphics.lineTo(0, 117);
line.graphics.endFill();
line.x = 172;
line.y = 61;
this.addChild(line);
let colorLabel = new egret.TextField();
colorLabel.textColor = 0xffffff;
colorLabel.width = stageW - 172;
colorLabel.textAlign = "center";
colorLabel.text = "Hello Egret";
colorLabel.size = 24;
colorLabel.x = 172;
colorLabel.y = 80;
this.addChild(colorLabel);
let textfield = new egret.TextField();
this.addChild(textfield);
textfield.alpha = 0;
textfield.width = stageW - 172;
textfield.textAlign = egret.HorizontalAlign.CENTER;
textfield.size = 24;
textfield.textColor = 0xffffff;
textfield.x = 172;
textfield.y = 135;
this.textfield = textfield;
let button = new eui.Button();
button.label = "Click!";
button.horizontalCenter = 0;
button.verticalCenter = 0;
this.addChild(button);
button.addEventListener(egret.TouchEvent.TOUCH_TAP, this.onButtonClick, this);
// 截图
var renderTexture:egret.RenderTexture = new egret.RenderTexture();
renderTexture.drawToTexture(this);
var base64img=renderTexture.toDataURL("image/png");
console.log(base64img);
}
/**
* 根据name关键字创建一个Bitmap对象。name属性请参考resources/resource.json配置文件的内容。
* Create a Bitmap object according to name keyword.As for the property of name please refer to the configuration file of resources/resource.json.
*/
private createBitmapByName(name: string): egret.Bitmap {
let result = new egret.Bitmap();
let texture: egret.Texture = RES.getRes(name);
result.texture = texture;
return result;
}
/**
* 描述文件加载成功，开始播放动画
* Description file loading is successful, start to play the animation
*/
private startAnimation(result: Array<any>): void {
let parser = new egret.HtmlTextParser();
let textflowArr = result.map(text => parser.parse(text));
let textfield = this.textfield;
let count = -1;
let change = () => {
count++;
if (count >= textflowArr.length) {
count = 0;
}
let textFlow = textflowArr[count];
// 切换描述内容
// Switch to described content
textfield.textFlow = textFlow;
let tw = egret.Tween.get(textfield);
tw.to({ "alpha": 1 }, 200);
tw.wait(2000);
tw.to({ "alpha": 0 }, 200);
tw.call(change, this);
};
change();
}
/**
* 点击按钮
* Click the button
*/
private onButtonClick(e: egret.TouchEvent) {
panel = new eui.Panel();
panel.title = "Title";
panel.horizontalCenter = 0;
panel.verticalCenter = 0;
this.addChild(panel);
}
}
</pre>