How to make google chrome go full screen in Angular 4 Application?

Question

I am developing an application where I want to implement such a thing where if user leaves from one component & enters other component, then in other component's ngOnInit method chrome browser should go full screen same as when we press Fn + F11 Key.

Any help or references are appreciated.

Answer 1

You need to use the Full Screen API, which is provided by almost all browsers. You can read about it here.

In short, to display an Element in full-screen mode, you need to call requestFullscreen() on it. Exiting it is done via exitFullscreen(). To check if a browser is in full-screen mode, you can access the fullscreenElement document property. You can also handle the fullscreenchange event to be notified when full-screen mode is toggled.

Since this API has compatibility issues with Webkit-based browsers, I would suggest that you use the webkit prefix.

If you want to implement the full-screen feature in an 'Angular way,' I would suggest creating a directive. You can use a third-party library if you prefer, such as the ngx-fullscreen-directive.

Answer 2

Most of the answer above are from 2018, nowdays to achieve compatibility in Chrome, Firefox, other browsers and mobile, I have determined that using requestFullScreen is enough

https://developer.mozilla.org/en-US/docs/Web/API/Element/requestFullScreen

Here is an example on to be able to toggle between full screen and normal screen:

docElement: HTMLElement;
isFullScreen: boolean = false;

ngOnInit(): void {
    this.docElement = document.documentElement;
}

toggleFullScreen() {
    if (!this.isFullScreen) {
      this.docElement.requestFullscreen();
    }
    else {
      document.exitFullscreen();
    }
    this.isFullScreen = !this.isFullScreen;
}

The request to change to fullscreen can only be made when a user interacts with an element, for example a button

<button (click)="toggleFullScreen()">SWITCH SCREEN MODE</button>

Answer 3

This is the current "angular way" to do it.

HTML: Use This in Html:

(click)="openFullscreen()

NgOninit:

this.elem = document.documentElement;

TS: Put this Function it will work...

 openFullscreen() {
if (this.elem.requestFullscreen) {
  this.elem.requestFullscreen();
} else if (this.elem.mozRequestFullScreen) {
  /* Firefox */
  this.elem.mozRequestFullScreen();
} else if (this.elem.webkitRequestFullscreen) {
  /* Chrome, Safari and Opera */
  this.elem.webkitRequestFullscreen();
} else if (this.elem.msRequestFullscreen) {
  /* IE/Edge */
  this.elem.msRequestFullscreen();
}`]`

}

Answer 4

You can try with requestFullscreen

I have create a demo on Stackblitz

fullScreen() {
    let elem = document.documentElement;
    let methodToBeInvoked = elem.requestFullscreen ||
      elem.webkitRequestFullScreen || elem['mozRequestFullscreen']
      ||
      elem['msRequestFullscreen'];
    if (methodToBeInvoked) methodToBeInvoked.call(elem);
}

Answer 5

put the following code on the top of the component (before @Component) you want to trigger:

    interface FsDocument extends HTMLDocument {
      mozFullScreenElement?: Element;
      msFullscreenElement?: Element;
      msExitFullscreen?: () => void;
      mozCancelFullScreen?: () => void;
    }

    export function isFullScreen(): boolean {
      const fsDoc = <FsDocument> document;

      return !!(fsDoc.fullscreenElement || fsDoc.mozFullScreenElement || fsDoc.webkitFullscreenElement || fsDoc.msFullscreenElement);
    }

    interface FsDocumentElement extends HTMLElement {
      msRequestFullscreen?: () => void;
      mozRequestFullScreen?: () => void;
    }

    export function toggleFullScreen(): void {
      const fsDoc = <FsDocument> document;

      if (!isFullScreen()) {
        const fsDocElem = <FsDocumentElement> document.documentElement;

        if (fsDocElem.requestFullscreen)
          fsDocElem.requestFullscreen();
        else if (fsDocElem.msRequestFullscreen)
          fsDocElem.msRequestFullscreen();
        else if (fsDocElem.mozRequestFullScreen)
          fsDocElem.mozRequestFullScreen();
        else if (fsDocElem.webkitRequestFullscreen)
          fsDocElem.webkitRequestFullscreen();
      }
      else if (fsDoc.exitFullscreen)
        fsDoc.exitFullscreen();
      else if (fsDoc.msExitFullscreen)
        fsDoc.msExitFullscreen();
      else if (fsDoc.mozCancelFullScreen)
        fsDoc.mozCancelFullScreen();
      else if (fsDoc.webkitExitFullscreen)
        fsDoc.webkitExitFullscreen();
    }

    export function setFullScreen(full: boolean): void {
      if (full !== isFullScreen())
        toggleFullScreen();
    }

and on the ngOnInit method make a call to the setFullScreen(full: boolean) function:

ngOnInit(): void {
    setFullScreen(true);
}

Answer 6

How To - Fullscreen - https://www.w3schools.com/howto/howto_js_fullscreen.asp

This is the current "angular way" to do it.

HTML

<h2 (click)="openFullscreen()">open</h2>
<h2 (click)="closeFullscreen()">close</h2>

Component

import { DOCUMENT } from '@angular/common';
import { Component, Inject, OnInit } from '@angular/core';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.scss']
})
export class AppComponent implements OnInit {
  constructor(@Inject(DOCUMENT) private document: any) {}
  elem;

  ngOnInit() {
    this.elem = document.documentElement;
  }

  openFullscreen() {
    if (this.elem.requestFullscreen) {
      this.elem.requestFullscreen();
    } else if (this.elem.mozRequestFullScreen) {
      /* Firefox */
      this.elem.mozRequestFullScreen();
    } else if (this.elem.webkitRequestFullscreen) {
      /* Chrome, Safari and Opera */
      this.elem.webkitRequestFullscreen();
    } else if (this.elem.msRequestFullscreen) {
      /* IE/Edge */
      this.elem.msRequestFullscreen();
    }
  }

  /* Close fullscreen */
  closeFullscreen() {
    if (this.document.exitFullscreen) {
      this.document.exitFullscreen();
    } else if (this.document.mozCancelFullScreen) {
      /* Firefox */
      this.document.mozCancelFullScreen();
    } else if (this.document.webkitExitFullscreen) {
      /* Chrome, Safari and Opera */
      this.document.webkitExitFullscreen();
    } else if (this.document.msExitFullscreen) {
      /* IE/Edge */
      this.document.msExitFullscreen();
    }
  }
}