rt-sim-training-client/src/utils/screen.js

// 判断全屏模式是否是可用
export function isFullscreenEnabled() {
	return document.fullscreenEnabled ||
        document.mozFullScreenEnabled ||
        document.webkitFullscreenEnabled ||
        document.msFullscreenEnabled || false;
}

// 判断浏览器是否全屏
export function isFullscreen() {
	return document.fullscreenElement ||
        document.msFullscreenElement ||
        document.mozFullScreenElement ||
        document.webkitFullscreenElement || false;
}

// 启动全屏
export function launchFullscreen() {
	if (isFullscreenEnabled()) {
		const element = document.documentElement;
		if (element.requestFullScreen) {
			element.requestFullScreen();
		} else if (element.mozRequestFullScreen) {
			element.mozRequestFullScreen();
		} else if (element.msRequestFullscreen) {
			element.msRequestFullscreen();
		} else if (element.oRequestFullscreen) {
			element.oRequestFullscreen();
		} else if (element.webkitRequestFullScreen) {
			element.webkitRequestFullScreen();
		}
	}
}

// 退出全屏
export function exitFullscreen() {
	if (isFullscreen()) {
		if (document.exitFullscreen) {
			document.exitFullscreen();
		} else if (document.msExitFullscreen) {
			document.msExitFullscreen();
		} else if (document.mozCancelFullScreen) {
			document.mozCancelFullScreen();
		} else if (document.mozExitFullScreen) {
			document.mozExitFullScreen();
		} else if (document.webkitExitFullscreen) {
			document.webkitExitFullscreen();
		}
	}
}