Function getScreenOrientation

packages/melonjs/src/system/device.ts:446–482

()

 * @category Application
 */
export function getScreenOrientation(): string {
	const PORTRAIT = "portrait";
	const LANDSCAPE = "landscape";

	const screen = globalThis.screen;

	// first try using "standard" values
	if (screenOrientation) {
		const orientation = prefixed(
			"orientation",
			screen as unknown as Record<string, unknown>,
		);
		if (
			typeof orientation === "object" &&
			orientation !== null &&
			typeof (orientation as ScreenOrientation).type === "string"
		) {
			// Screen Orientation API specification
			return (orientation as ScreenOrientation).type;
		} else if (typeof orientation === "string") {
			// moz/ms-orientation are strings
			return orientation;
		}
	}

	// check using the deprecated API
	if (
		typeof (globalThis as { orientation?: number }).orientation === "number"
	) {
		return Math.abs((globalThis as { orientation: number }).orientation) === 90
			? LANDSCAPE
			: PORTRAIT;
	}

	// fallback to window size check
	return globalThis.outerWidth > globalThis.outerHeight ? LANDSCAPE : PORTRAIT;
}

/**
 * locks the device screen into the specified orientation.<br>