Sinopec-Anxin/src/app/app.component.ts

import { Component, TemplateRef, ViewChild } from '@angular/core';
import { HttpClient } from '@angular/common/http'
import { Router, ActivatedRoute } from '@angular/router'
import { CacheTokenService } from './service/cache-token.service'//引入服务
import { CookieService } from 'ngx-cookie-service';
import "reflect-metadata";
import { NzNotificationService } from 'ng-zorro-antd/notification';
@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.scss']
})
export class AppComponent {

  @ViewChild(TemplateRef, { static: false }) template?: TemplateRef<{}>;

  constructor(private http: HttpClient, private router: Router, public token: CacheTokenService, private cookieService: CookieService, private notificationService: NzNotificationService) { }

  ngOnInit(): void {
    //   var token = this.cookieService.get("token")
    //   var refreshToken = this.cookieService.get("refreshToken");
    //   if(token && refreshToken) {
    //     this.http.post('/api/CompanyAccount/RefreshToken',{token: token,refreshToken: refreshToken}).subscribe((data: Data) => {
    //       sessionStorage.setItem("token",data.token);
    //       this.cookieService.set("token",data.token,null,'/');
    //       this.cookieService.set("refreshToken",data.refreshToken,null,'/');
    //       this.token.startUp()
    //   })
    // }

    // let t = this;
		// if(t._getSystem()) { //判断设备，目前只在windows系统下校正浏览器缩放比例
		// 	//初始化页面校正浏览器缩放比例
		// 	t._correct();
		// 	//开启监听页面缩放
		// 	t._watch();
		// }

  }

  ngAfterViewInit(): void {

  }


  _getSystem() {
    let flag = false;
    var agent = navigator.userAgent.toLowerCase();
    //		var isMac = /macintosh|mac os x/i.test(navigator.userAgent);
    //		if(isMac) {
    //			return false;
    //		}
    //现只针对windows处理，其它系统暂无该情况，如有，继续在此添加
    if (agent.indexOf("windows") >= 0) {
      return true;
    }
  }
  //获取页面缩放比例
  //	_getDevicePixelRatio() {
  //		let t = this;
  //	}
  //监听方法兼容写法
  _addHandler(element, type, handler) {
    if (element.addEventListener) {
      element.addEventListener(type, handler, false);
    } else if (element.attachEvent) {
      element.attachEvent("on" + type, handler);
    } else {
      element["on" + type] = handler;
    }
  }
  //校正浏览器缩放比例
  _correct() {
    let t = this;
    console.log('devicePixelRatio',window.devicePixelRatio)
    //页面devicePixelRatio（设备像素比例）变化后，计算页面body标签zoom修改其大小，来抵消devicePixelRatio带来的变化。
    document.getElementsByTagName('body')[0].style['zoom'] = String(1 / window.devicePixelRatio);
    sessionStorage.setItem('zoom',String(1 / window.devicePixelRatio))

  }
  //监听页面缩放
  _watch() {
    let t = this;
    t._addHandler(window, 'resize', function () { //注意这个方法是解决全局有两个window.resize
      //重新校正
      t._correct()
    })
  }

}