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Re: Adding a paint event to HTMLElement to support Web Components / Shadow DOM

From: Boris Zbarsky <bzbarsky@MIT.EDU>
Date: Wed, 09 May 2012 01:42:19 -0400
Message-ID: <4FAA03BB.5030506@mit.edu>
To: "Gregg Tavares (勤)" <gman@google.com>
CC: public-webapps@w3.org
On 5/9/12 1:20 AM, Gregg Tavares (勤) wrote:
> I don't think I understand how requestAnimationFrame would work here.
> Maybe my example was poor. I'm not suggesting a live constantly updating
> audio wave. Instead I'm suggesting a static WebComponent that is heavy
> to render. For example the wave display in an audio editing tool. Let's
> say I had an app that displayed several audio tracks, some of those
> tracks are scrolled off the page. (like this
> http://www.newfreedownloads.com/imgs/17189-w520.jpg) The tracks
> components are set to 100% width so that sizing the window ends up
> re-sizing all the components

Then their resize handlers do requestAnimationFrame(rerender_me, 
this_element).  If the element is visible, rerender_me is called.  If 
not, it's queued up by the browser until the element becomes visible, no?

That's assuming support for the element argument to 
requestAnimationFrame, of course.

Received on Wednesday, 9 May 2012 05:55:55 UTC

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