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

Re: flexbox and box-sizing

From: Ojan Vafai <ojan@chromium.org>
Date: Thu, 23 Feb 2012 10:28:11 -0800
Message-ID: <CANMdWTvn5w10AUVM9ZDQB1ST2Ohq8em-8zykd0zuEboWt6O3ew@mail.gmail.com>
To: "Tab Atkins Jr." <jackalmage@gmail.com>
Cc: Philip Walton <philip@philipwalton.com>, www-style@w3.org
Definitely a WebKit bug: https://bugs.webkit.org/show_bug.cgi?id=70771. I
don't think the spec needs changing, except it might be worthwhile to
explicitly state that the preferred width applies to the box-sizing
appropriate width.

On Thu, Feb 23, 2012 at 8:33 AM, Tab Atkins Jr. <jackalmage@gmail.com>wrote:

> On Thu, Feb 23, 2012 at 8:18 AM, Philip Walton <philip@philipwalton.com>
> wrote:
> > Disclaimer: This is my first post to this list, so feel free to tell me
> if
> > this email should be sent somewhere else.
> >
> > I've been playing around with the new flexbox in Chrome and Webkit
> > nightlies, and it seems that the webkit implementation ignores
> box-sizing:
> > border-box. Before filing a bug or anything, I wanted to make sure my
> > opinion of what should happen is actually the same as the intention of
> the
> > spec.
> >
> > Imagine the following setup:
> > - you have a flexbox with two child flexbox-items
> > - each flexbox-item has a width of 50%
> > - each flexbox-item has padding: 1em
> > - each flexbox-item has box-sizing: border-box
> >
> > After reading the spec and specifically the "Flexbox Layout Algorithm",
> It
> > seems to me that flexbox-items should handle widths and box-sizing the
> way
> > normal elements do, but that doesn't appear to be the case.
> >
> > Is this a bug in Webkit's implementation or is there somewhere that the
> spec
> > address this that I've missed?
> >
> > Here's a jsfiddle example illustrating the issue:
> > http://jsfiddle.net/Qx3nW/1/
>
> The spec is *supposed* to handle box-sizing, but I could easily have
> accidentally omitted handling it from important parts of the
> algorithm.
>
> I'll have to dive in and see if this is a spec bug or an
> implementation bug.  (Go ahead and file a bug on WebKit anyway - in
> either case, our behavior will have to change.)
>
> ~TJ
>
>
Received on Thursday, 23 February 2012 18:28:59 GMT

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