W3C home > Mailing lists > Public > www-style@w3.org > May 2012

Re: Proposal: position:fixed elements should form new stacking contexts

From: Shane Stephens <shans@google.com>
Date: Thu, 17 May 2012 18:06:23 +0900
Message-ID: <CAGTfzwSsLPoVf2w5W3RQ3syrSg6xP=jqUJ2DdTOrNM=cj0DLmA@mail.gmail.com>
To: robert@ocallahan.org
Cc: James Robinson <jamesr@google.com>, www-style list <www-style@w3.org>
I support making this change. Anything that brings desktop and mobile
implementations more in line with each other is a good change :)


On Thu, May 17, 2012 at 3:50 PM, Robert O'Callahan <robert@ocallahan.org>wrote:

> On Thu, May 17, 2012 at 6:34 PM, Robert O'Callahan <robert@ocallahan.org>wrote:
>> On mobile, asynchronous scrolling of pages with fixed-pos elements is not
>> fully done yet, which may be why you see jank there currently. We do have
>> the limitation that asynchronous scrolling doesn't work for scrolled
>> elements that have been split into multiple layers. As you note, that is
>> pretty rare.
> I guess you could say that changing the spec would make it easier for us
> to do asynchronous scrolling of pages that currently interleave fixed-pos
> content with scrolling content. But that would only help us on pages we'd
> have broken the rendering of, so I don't find it a compelling argument :-).
> I don't particularly object to changing the spec assuming you have data
> showing that on mobile *and desktop* this doesn't break sites. Especially
> if you're willing to take the lead on the compatibility break on desktop!
> (I may however claim an IOU for "small but slightly-compat-breaking spec
> change to simplify our engine" :-).)
> Rob
> --
> “You have heard that it was said, ‘Love your neighbor and hate your
> enemy.’ But I tell you, love your enemies and pray for those who persecute
> you, that you may be children of your Father in heaven. ... If you love
> those who love you, what reward will you get? Are not even the tax
> collectors doing that? And if you greet only your own people, what are you
> doing more than others?" [Matthew 5:43-47]
Received on Thursday, 17 May 2012 09:07:01 UTC

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