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Re: [css3-animation] how does 'animation-duration: 0' interact with 'animation-fill-mode'?

From: Dean Jackson <dino@apple.com>
Date: Sat, 02 Apr 2011 12:15:01 +1100
Cc: "L. David Baron" <dbaron@dbaron.org>, www-style@w3.org
Message-id: <0FC27DD2-3390-4A38-866C-A3B2B6408452@apple.com>
To: Simon Fraser <smfr@me.com>

On 02/04/2011, at 11:53 AM, Simon Fraser wrote:

> On Apr 1, 2011, at 5:47 PM, Dean Jackson wrote:
> 
>> On 01/04/2011, at 2:56 PM, L. David Baron wrote:
>> 
>>> http://dev.w3.org/csswg/css3-animations/#the-animation-duration-property-
>>> says:
>>> # By default the value is 0, meaning that the animation cycle is
>>> # immediate (i.e. there will be no animation).
>> 
>> I think that's worded badly.
>> 
>> If the duration is 0, should that be as if no animation was applied at all?
>> 
>>> If this is the case, does 'animation-fill-mode' still apply?  (If it
>>> does, the spec should be clear on whether 'animation-delay' applies.
>>> Presumably 'animation-iteration-count' doesn't, though.)
>> 
>> There is a lot to clean up. Do events get fired? Do iteration events get fired (even if duration is 0 and iteration-count is 1 million)?
>> 
>> I'm not sure what the best answer here is.
> 
> I think that the "before" fill state should still apply (if delay is > 0), the "after" fill state should apply, but the animation itself is considered instantaneous. I think this is what WebKit does.


And iteration events?

Dean
Received on Saturday, 2 April 2011 01:15:37 GMT

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