Finding elements that are hidden due to overflow: hidden

Behrang Saeedzadeh behrangsa at gmail.com
Fri Sep 4 07:27:16 UTC 2015


Actually I just realized that even getVisibleRect is not generic enough as
multiple sections of an element could become hidden. So we will going to
need getVisibleRects.

On Fri, 4 Sep 2015 at 3:45 am Tab Atkins Jr. <jackalmage at gmail.com> wrote:

> On Thu, Sep 3, 2015 at 3:26 AM, Behrang Saeedzadeh <behrangsa at gmail.com>
> wrote:
> > Hi Tab,
> >
> > My use case can already be implemented using JavaScript and some existing
> > properties on elements such as clientLeft and its cousins.
> >
> > Here's a simplified version of my use case:
> > http://codepen.io/behrangsa/pen/PPozWj
>
> That shows some example code, but I'm not sure what you're trying to
> do with it.  I guess you want to know if some of the options are
> overflowing the container?  What are you trying to accomplish with
> that?  What user-facing styling need are you attempting to address?
>
> > I am not sure if this is technically feasible or not. But AFAIK some
> games
> > use various algorithms to determine the visibility of an object in a 3D
> > space. Or if a bullet fired in a direction will hit a given object or it
> > will get blocked by an obstacle in front of it. So it seemed to me it
> > probably should be feasible in HTML/CSS as well.
>
> "Feasible" and "sufficiently worthwhile to add to the web platform"
> are, of course, two vastly different things. ^_^
>
> ~TJ
>
-- 
Best regards,
Behrang Saeedzadeh
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