- From: Alan Stearns <stearns@adobe.com>
- Date: Fri, 14 Jun 2013 11:12:30 -0700
- To: "Tab Atkins Jr." <jackalmage@gmail.com>, Lea Verou <lea@w3.org>
- CC: www-style list <www-style@w3.org>, "Eric A. Meyer" <eric@meyerweb.com>
On 6/13/13 5:05 AM, "Tab Atkins Jr." <jackalmage@gmail.com> wrote: >On Thu, Jun 13, 2013 at 1:50 PM, Lea Verou <lea@w3.org> wrote: >> The current wording [1] is a bit ambiguous regarding whether SVG images >>are >> allowed for shape generation or whether itıs only raster images: >> >> Another way of defining shapes is by specifying a source image whose >>alpha >> channel is used to compute the shape. The shape is computed to be the >>path >> that encloses the area where the opacity of the specified image is >>greater >> than the shape-image-thresholdı value. If the shape-image-thresholdı >>is >> not specified, the initial value to be considered is 0.5. >> >> For animated raster image formats (such as GIF), the first frame of the >> animation sequence is used. >> >> >> There is also this note in the change Log [2]: >> >> Postpone shapes from SVG to a future Shapes level >> >> >> My interpretation was that SVG images are allowed, and the alpha channel >> used refers to the alpha channel of the rendered SVG. I assumed the >> changelog note was about defining SVG shapes directly in CSS code. >>However, >> Ericıs (CCed) interpretation was that only raster images are allowed, >>which >> indicates that thereıs some ambiguity here. >> >> [1]: http://dev.w3.org/csswg/css-shapes/#shapes-from-image >> [2]: http://dev.w3.org/csswg/css-shapes/#since-may-3rd-2012 > >Yes, all images are allowed, regardless of format. The only >SVG-related thing that's been postponed is referencing SVG elements >directly. > >~TJ Yes, the intent is to allow all images. I've changed the changelog to clarify that it's only SVG elements that have been postponed. I wonder if the type for shape from images should change from <uri> to <image>. Thanks, Alan
Received on Friday, 14 June 2013 18:13:00 UTC