CODEWITHSUNDEEP
htmlcssz-indexfullscreen
mustafa.0x
mustafa.0x

Reputation: 1506

Displaying elements other than fullscreen element (HTML5 fullscreen API)

When I "fullscreen" an element (let's say a div), I can't get anything other elements to appear (while in fullscreen mode). Why is that happening? How can I accomplish this?

Related: Is there a way to overlay a <canvas> over a fullscreen HTML5 <video>?

Upvotes: 16

Views: 14792

Answers (2)

Zombi
Zombi

Reputation: 1070

I think you can just wrap video inside div and put there also canvas and then just make div fullscreen, not just the video.

<div class="fullscreen">
    <video></video>
    <canvas></canvas>
</div>

Don't start fight with z-indexes, you'll always lose one day.

Upvotes: 1

mustafa.0x
mustafa.0x

Reputation: 1506

It seems that browsers (Chrome 28, Firefox 23) set the z-index of fullscreened elements to 2147483647 (the largest 32-bit signed number). According to tests, setting the z-index of other elements to the same z-index will cause them to show, but the z-index of the fullscreened element can not be changed (it can, but the browser just ignores the value — even with !important).

Maybe the only reference I could find to this:

https://github.com/WebKit/webkit/blob/master/LayoutTests/fullscreen/full-screen-zIndex.html

Also, in Chrome dev tools:

Computed style on fullscreened element

So either set elements to the maximum z-index, or, the better solution would be to just create a container element, make it so that all elements you want to display are children of the container element, and fullscreen it.

Upvotes: 26

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