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[whatwg] Proposal for a tab visibility API

From: Boris Zbarsky <bzbarsky@MIT.EDU>
Date: Wed, 08 Dec 2010 18:12:42 -0500
Message-ID: <4D0010EA.7050903@mit.edu>
On 12/8/10 5:29 PM, Markus Ernst wrote:
> Thus, I'd consider an api for detecting the visibility state of every
> HTML element useful (totally visible, partially visible, hidden - or a
> percentage value).

This is pretty hard to implement, in general.  For example, if I put 
another window over the browser window then whether the content in the 
browser is visible depends on the exact app running in that window, and 
on the parts of it overlapping the browser content, right?

-Boris
Received on Wednesday, 8 December 2010 15:12:42 UTC

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