- From: Nikolas Zimmermann <zimmermann@physik.rwth-aachen.de>
- Date: Fri, 30 Jul 2010 11:37:44 +0200
- To: www-svg@w3.org
Good morning SVG crowd, I'm a bit confused with the definition of the filter/clip-path properties and the "Applies to" section. 1. clip-path property: (same problem for 'mask' property) clip-path is not inherited and applies to "container elements" and "graphics elements". "container elements" : ‘a’, ‘defs’, ‘glyph’, ‘g’, ‘marker’, ‘mask’, ‘missing-glyph’, ‘pattern’, ‘svg’, ‘switch’ and ‘symbol’. http://www.w3.org/TR/SVG11/intro.html#TermContainerElement "graphics elements": ‘circle’, ‘ellipse’, ‘image’, ‘line’, ‘path’, ‘polygon’, ‘polyline’, ‘rect’, ‘text’ and ‘use’. http://www.w3.org/TR/SVG11/intro.html#TermGraphicsElement But as <clipPath clip-path="url(#foo)"> is explicitely allowed in the clipPath notes: "The ‘clipPath’ element or any of its children can specify property ‘clip-path’." It makes me wonder whether the "Applies to" section should be extended to list clipPath elements? 2. filter property: filters have a similar problem. The "graphics elements" list does not contain "tspan". That sounds like <tspan filter="url(#foo)"/> is not allowed. When expanding the "presentation attributes" list on http://www.w3.org/TR/SVG11/text.html#TSpanElement , it lists filter and clip-path. This also affects altGlyph / textPath / tref. Maybe I'm misinterpreting the "Applies to" section. I ran into this problem when optimizing our code path to determine whether we should lookup clip-path/filters for certain elements. Using the "container elements" and "graphics elements" lists as white list for elements where clip-path/filter is applyable fails, if certain elements like tspan / clipPath are not included. Can anyone explain the reason why the "Applies to" section is as it is :-) Cheers, Niko
Received on Friday, 30 July 2010 09:38:17 UTC