Hi Dave, On Aug 31, 2012, at 11:57 AM, David Hyatt <hy...@apple.com> wrote:
> This is great! I'd like to be the goto reviewer for any changes you make on > the CSS Masking side, since I implemented the original code. I also want to > be kept in the loop if any changes are made to the way any of the > -webkit-mask-* properties are specified. There are some interesting > differences (especially in default values) when compared with the > corresponding background/border-image properties, and I want to make sure all > of that is well understood. I try to be careful and definitely keep you in the loop for -webkit-mask* related patches. Thank you for your interest! > > Also, it's important to make sure if there are any deviations/changes, that > the -webkit-prefixed versions of these properties don't change behavior. > Backwards compatibility is extremely important here. You'll notice that the > way I preserved backwards compatibility on border-image for example was to go > ahead and implement the unprefixed versions. I don't really have a good > suggestion for how to do that here... it's possible a new prefix will be > necessary. It all depends on if any changes are made that would break > existing code. There is indeed one change in the Spec, that differs to the behavior in WebKit. The CSS WG resolved to remove -webkit-mask-attachment from the specification (unless it is requested by developers to add it again). This itself doesn't affect the behavior on WebKit much - rendering wise. However, it influences the syntax of the the shorthand -webkit-mask, which doesn't take <attachment> as type anymore. Greetings, Dirk > > dave > (hy...@apple.com) > > On Aug 29, 2012, at 5:41 PM, Dirk Schulze wrote: > >> Hi WebKit folks, >> >> The CSS WG and SVG WG agreed to work on a CSS Masking specification [1]. >> Basically the spec aims to specify the behavior of >> -webkit-mask/-webkit-box-mask on WebKit browsers and SVG Mask/ SVG ClipPath >> on Firefox. >> >> I would like to implement the specification in the next weeks and months. >> Since masking and clipping are basic operations that use the existing >> capabilities in all graphic libraries, and sine we are using it heavily >> internally in WebKit already, I do not plan to introduce a new compiler >> flag. >> >> However, some features will be covered by existing compiler flags like SVG >> Mask and SVG ClipPath, allowing to disable these parts. >> >> I created a master bug that covers the work [2]. >> >> Greetings, >> Dirk >> >> [1] http://dvcs.w3.org/hg/FXTF/raw-file/tip/masking/index.html >> [2] https://bugs.webkit.org/show_bug.cgi?id=95389 >> _______________________________________________ >> webkit-dev mailing list >> webkit-dev@lists.webkit.org >> http://lists.webkit.org/mailman/listinfo/webkit-dev > > _______________________________________________ > webkit-dev mailing list > webkit-dev@lists.webkit.org > http://lists.webkit.org/mailman/listinfo/webkit-dev _______________________________________________ webkit-dev mailing list webkit-dev@lists.webkit.org http://lists.webkit.org/mailman/listinfo/webkit-dev
