[IDEA] "Full Screen" Menu Option

[TamedShrew]

By the way, I implemented a similar thing a while ago and found these notes useful (particularly point 4):

1. Add the Fullscreen Button:
Firstly, you should add a button or some form of user interface that users can interact with to toggle fullscreen. This is crucial because modern browsers often require a user gesture, such as a click, to initiate fullscreen mode.

html

Code:

<button id="fullscreenBtn">Go Fullscreen</button>

2. Add JavaScript:
You can add JavaScript to toggle fullscreen mode when the button is clicked.

javascript

Code:

document.getElementById('fullscreenBtn').addEventListener('click', function() {
    if (document.fullscreenElement) {
        document.exitFullscreen();
    } else {
        document.documentElement.requestFullscreen();
    }
});

3. CSS (optional):
When the browser enters fullscreen mode, it might be useful to apply styles specific to this mode:

css

Code:

:fullscreen {
    /* styles for fullscreen mode */
    background-color: white; // Just an example
}

4. Handle Variations:
While the majority of modern browsers support the Fullscreen API, the method names can vary. You might need to use vendor-prefixed methods for compatibility:

javascript

Code:

function toggleFullscreen() {
    if (document.fullscreenElement || document.webkitFullscreenElement || document.mozFullScreenElement) {
        if (document.exitFullscreen) {
            document.exitFullscreen();
        } else if (document.webkitExitFullscreen) {
            document.webkitExitFullscreen();
        } else if (document.mozCancelFullScreen) {
            document.mozCancelFullScreen();
        }
    } else {
        var docElm = document.documentElement;
        if (docElm.requestFullscreen) {
            docElm.requestFullscreen();
        } else if (docElm.webkitRequestFullScreen) {
            docElm.webkitRequestFullScreen();
        } else if (docElm.mozRequestFullScreen) {
            docElm.mozRequestFullScreen();
        }
    }
}

document.getElementById('fullscreenBtn').addEventListener('click', toggleFullscreen);