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Re: [css3-animations][bug-14795] Resolution of keyframe selectors outside [0%-100%]

From: Tab Atkins Jr. <jackalmage@gmail.com>
Date: Fri, 3 Aug 2012 15:57:07 -0700
Message-ID: <CAAWBYDAcjqb_gR0b+_a++Q2qxVzbtw94xkoV_QrppHboyu6Xgw@mail.gmail.com>
To: Sylvain Galineau <sylvaing@microsoft.com>
Cc: "www-style@w3.org" <www-style@w3.org>
On Fri, Aug 3, 2012 at 3:15 PM, Sylvain Galineau <sylvaing@microsoft.com> wrote:
> Looking into this open issue [1], I find that both Firefox (Aurora) and IE10
> ignore keyframe selectors that are <0% or >100% and simply run the animation
> as if they weren't present.
>
> WebKit (Chrome 21) seems to ignore the entire animation of any keyframe selector
> is out of bounds.
>
> (I have no build of Opera that supports css3-animations at the moment).
>
> I propose we specify the behavior implemented by Firefox and IE; it seems more
> consistent with author expectations of what would happen to an invalid selector.
>
> [1] https://www.w3.org/Bugs/Public/show_bug.cgi?id=14795

Agreed.

(Though it would have been nice, if this weren't constrained by
existing impls, to have it work similarly to, say, radial gradients
stops positioned less than 0%, where the keyframe is still used to
generate a "virtual" 0% keyframe.  But we're past that point now.)

~TJ
Received on Friday, 3 August 2012 22:57:55 GMT

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