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Re: [css-flexbox] available space and max-height

From: Tab Atkins Jr. <jackalmage@gmail.com>
Date: Tue, 1 Dec 2015 16:58:02 -0800
Message-ID: <CAAWBYDAB36KT66pWPoVsvV4Jm=DFOn64JJ7ar31n-3GfQSP_kQ@mail.gmail.com>
To: Christian Biesinger <cbiesinger@google.com>
Cc: fantasai <fantasai.lists@inkedblade.net>, www-style list <www-style@w3.org>
On Tue, Dec 1, 2015 at 4:49 PM, Christian Biesinger
<cbiesinger@google.com> wrote:
> On Tue, Dec 1, 2015 at 7:41 PM, fantasai <fantasai.lists@inkedblade.net> wrote:
>> On 10/09/2015 12:21 PM, Christian Biesinger wrote:
>>>
>>> Hi there!
>>>
>>> I was looking at this testcase:
>>> http://codepen.io/anon/pen/pJLwYp
>>>
>>> Originally I was focused on the intrinsic width computation, but then
>>> I actually realized that I can't find a spot in the flexbox spec that
>>> says we should break lines at the max-height. It talks about the
>>> available space, but its definition does not take max-height into
>>> account.
>>>
>>> Line breaking at max-height is interoperably implemented though. Did I
>>> just miss the part of the spec where it defines that? :)
>>
>>
>> This is handled in step 4 and 5
>>   https://drafts.csswg.org/css-flexbox/#algo-main-container
>> At this point we size the flex container (including honoring
>> max-height, of course). And then *afterwards* we break lines:
>>   https://drafts.csswg.org/css-flexbox/#algo-line-break
>
> OK, that's reasonable, and explains how to do the layout.
>
> However that still leaves the preferred width computation which only
> says "Place all flex items into lines of infinite length.", which is
> quite the opposite of respecting any height or max-height properties.
> Shouldn't it be affected by that?

No, "width: max-content;" never cares about the "max-width" property
on the element.  (For the purpose of figuring out what "max-content"
resolves to - later, in actual layout, it of course matters.)

~TJ
Received on Wednesday, 2 December 2015 00:58:51 UTC

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