On Jan 11, 2011, at 11:27 AM, Sylvain Galineau wrote: >> From: public-fx-request@w3.org [mailto:public-fx-request@w3.org] On >> Behalf Of Brad Kemper >> Sent: Tuesday, January 11, 2011 10:22 AM >> To: www-style list; public-fx@w3.org >> Subject: Filter Templates >> >> Let me begin by saying I know very little about SVG, but I am trying to slowly >> learn more. >> >> There has been talk before about "canned" SVG filter effects. I would like to >> propose (or at least, discuss the merits of) accomplishing this via a templating >> element inside the filter element, that defines what values it takes from the >> CSS declaration. >> >> Thus, for the following SVG filter that defines a certain drop shadow effect: >> >> <filter id="bradsDropShadow" x="0" y="0" width="1" height="1" >> filterUnits="userSpaceOnUse"> >> <feTemplate values="feFlood.flood-color && [feOffset.dx >> feOffset.dy feGaussianBlur.stdDeviation]"/> >> <feFlood flood-color="black" in="SourceAlpha" >> result="Colorized" /> >> <feGaussianBlur stdDeviation="2" in="Colorized" /> >> <feOffset dx="2" dy="2" /> >> <feMerge> >> <feMergeNode /> >> <feMergeNode in="SourceGraphic" /> >> </feMerge> >> </filter> >> >> Given the above "feTemplate" values, it could be used in a declaration like >> this: >> >> filter: url(#bradsDropShadow) 4px 5px; >> >> ...and the two lengths would be mapped to the "dx" and "dy" of feOffset.dx, >> and the omitted values would take their default values from the regular filter >> values ("black" for flood-color and "2" for stdDeviation in the above example), >> as long as the order and so forth of the feTemplate values were satisfied. >> >> Could that work? > > Like Tab, +1 on concept. My first thought was to apply SVG Parameters to > Filters. (See http://www.w3.org/TR/2009/WD-SVGParamPrimer-20090616/ for SVG > Parameters). That seems like the right approach, but how do you name the parameters from CSS? You'd have to do something like: filter: url(#myCoolFilter, param1=10px, param2=20px); SimonReceived on Tuesday, 11 January 2011 19:44:07 UTC
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