Re: CSS Charter

On Mar 26, 2008, at 4:33 AM, Erik Dahlström wrote:

>
> On Wed, 26 Mar 2008 08:12:23 +0100, Maciej Stachowiak  
> <mjs@apple.com> wrote:
>
>> On Mar 25, 2008, at 11:54 PM, Daniel Glazman wrote:
>>
>>> Maciej Stachowiak wrote:
>>>
>>>> I hope this information is helpful to the Working Group.
> ...
>
>> 2) It would be unfortunate if using a filter intrinsically required  
>> inserting presentational SVG markup in your document, or  
>> alternately loading an additional external resource, for the filter  
>> specification. At least for simple filters it seems desirable to be  
>> able to specify them full in CSS without reference to additional  
>> markup defining the filter.
>
> Agreed, but what is a sufficiently simple filter?

I'm not really the best person to fully design the feature. But I  
think a simple gaussian blur effect is an example of a sufficiently  
simple filter.

>
>
>> 3) It is not even clear to me if the SVG "filter" property is  
>> intended to work with references to external documents. The SVG 1.1  
>> spec does not make this clear.
>
> I find SVG 1.1 to be quite clear on this, the filter property value  
> can be a <uri>[1] (further described in the uri reference  
> definitions[2]). The only restriction is that it must point to an  
> <svg:filter> element to be valid. It's explictly stated that uri:s  
> can be both local and non-local.

I tried to figure it out from the table here:

http://www.w3.org/TR/SVG/struct.html#HeadOverview

The reason it was unclear to me is that a strong distinction is made  
between local and non-local references, and some of the properties  
specifically say "any local or non-local resource", so I wasn't sure  
what was intended for ones that said things like "can reference any  
SVG element" or "must reference a 'path' element".

I do not object to your interpretation but it wasn't entirely clear to  
me.

Cheers,
Maciej