Hi, On Wed, Jun 29, 2011 at 7:18 PM, TAMURA, Kent <[email protected]> wrote:
> Do you have a master bug for them? Not yet, but I'll make a master bug for them when I don't see a strong objection. > > On Fri, Jun 24, 2011 at 12:16, Kenichi Ishibashi <[email protected]>wrote: > >> Hi webkit-dev, >> >> I'm thinking about adding CSS3 font feature properties[1] support to >> WebKit. It allows page authors to control over advanced typographic >> features. Firefox has an experimental implementation and an article[2] >> shows how these properties work. I really would like to add this feature so >> I'd like to ask comments and suggestions in advance. >> >> My current plan is starting with adding the font-feature-settings property >> (6.12 Low-level font setting control) as -webkit-font-feature-settings, >> following a similar approach that Firefox did. For OpenType fonts, other >> properties can be treated as specific cases of the font-feature-settings >> property and I think adding this property is good starting point. >> >> One shortcomings of this approach is that it requires OpenType support for >> each port. A port which uses AAT might not be able to support this >> property, or we need to add an extra text rendering subsystem which can >> handle OpenType features to the port. >> >> If I get started with this plan, I will start implementing css parsing >> part, then implement font rendering part on a specific port (Chromium Linux >> port is in mind for now) on trial. >> >> I'd also like to put some notes of supporting CSS3 font feature properties >> with AAT and CoreText here: >> - AAT features are listed at [3]. >> - While the spec lists the equivalent OpenType feature tag for each >> property, it is unclear that what AAT feature setting corresponds with each >> property. An email written by the spec editor[4] lists them partially but >> not complehensive. >> - [5] describes OpenType support of CoreText (I'm not sure this is >> correct, though). >> >> Comments and suggestions are highly appreciated. >> >> [1] http://dev.w3.org/csswg/css3-fonts/#font-rend-props >> [2] http://hacks.mozilla.org/2010/11/firefox-4-font-feature-support/ >> [3] http://developer.apple.com/fonts/registry/ >> [4] http://lists.w3.org/Archives/Public/www-style/2009Jun/0506.html >> [5] http://en.wikipedia.org/wiki/OpenType_feature_tag_list >> >> Regards, >> >> >> _______________________________________________ >> webkit-dev mailing list >> [email protected] >> http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev >> >> > > > -- > TAMURA Kent > Software Engineer, Google > > > > -- Kenichi Ishibashi [email protected]
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