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Re: Serializing gradient function

From: Tab Atkins Jr. <jackalmage@gmail.com>
Date: Wed, 12 Jan 2011 09:04:38 -0800
Message-ID: <AANLkTinWCW7T24nO8oMa-xZNcmWn9wSVGCdXfQ2f7VhL@mail.gmail.com>
To: Rafal Chlodnicki <rchlodnicki@opera.com>
Cc: www-style@w3.org
2011/1/11 Rafal Chlodnicki <rchlodnicki@opera.com>:
> Given the linear-gradient(black, white) value for background property,
> should serialized value include implicit "top" gradient-line?
>
> Quote from http://dev.w3.org/csswg/cssom/#css-values:
>
> "Where CSS component values of the value can be omitted without changing the
> meaning of the value (e.g. initial values in shorthand properties), omit
> them. If this would remove all the values, then include the first allowed
> value.
>
> That could apply here but not necessary as it's unclear if it applies to
> arguments of css functions too.
>
> Currently, internal implementation in Opera does not return it. I can see
> that webkit's does (and Gecko's is not quite up to date so not sure if it's
> relevant).

The spec has explicit instructions for how to serialize gradient
functions <http://dev.w3.org/csswg/css3-images/#serializing-gradients>.

Or rather, it *would*, if I hadn't mucked up something when I
committed last night.  Looks like I've uncovered a bug in the spec
formatter.  For now, check out
<http://dev.w3.org/csswg/css3-images/Overview.src.html> and look near
the bottom for the gradient serialization algorithm.

Short answer: the spec currently requires that gradient to be
serialized as "linear-gradient(top, black, white)".

~TJ
Received on Wednesday, 12 January 2011 17:05:39 GMT

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