On Dec 3, 2012, at 5:31 AM, Alexis Menard <[email protected]> wrote:
> On Mon, Dec 3, 2012 at 10:19 AM, Dirk Schulze <[email protected]> wrote: >> >> On Dec 3, 2012, at 4:51 AM, Alexis Menard <[email protected]> wrote: >> >>> Hi everyone, >>> >>> I wanted to let you know that I have added the new CSS3 >>> background-position offsets support to WebKit. >>> >>> This support is behind the ENABLE_CSS3_BACKGROUND feature define and >>> it's disabled by default on all ports. I took the conservative >>> approach despite it's a cool feature. >>> >>> Long story short, it allows you to specify three or four values to >>> background-position. It's a nice addition as you can now position the >>> images using length or values in relation to any of the four corners >>> of elements, not just the top left corner. >>> >>> Opera, IE10 and Firefox implements this feature already (though the >>> latter returns weird results using getComputedStyle). >>> >>> It is tracked by https://bugs.webkit.org/show_bug.cgi?id=37514 and the >>> two patches landed (parsing and rendering) are >>> http://trac.webkit.org/changeset/135632 and >>> http://trac.webkit.org/changeset/136378. >>> >>> I believe the <position> type (3-4 values) could be/or is used in >>> other cases so we can reuse the parsing code for four/three values if >>> needed. I will investigate this afterwards and make appropriate >>> patches. >> >> I really hope that we don't use it any where else again (with the exception >> of -webkit-mask-position which should have same behavior as >> background-position). This is the use case for the calc() function. Sadly >> the calc() function came to late for CSS3 Backgrounds. > > -webkit-mask-position should behave the same way as > background-position? Even if I add feature to the latter? Why so? Because -webkit-mask and background share the same properties and syntax. Why should it be different on -webkit-mask-position? (Btw. CSS Masking already adapted the background-position syntax for mask-position[1]) > > it seems like transform-origin supports something similar. I need to look at > it. > > http://www.w3.org/TR/css3-transforms/#transform-origin-property It definitely does not :) Greetings, Dirk [1] http://dvcs.w3.org/hg/FXTF/raw-file/tip/masking/index.html#the-mask-position > >> >> That said, great work regarding the interoperability with other browsers. >> >> Greetings, >> Dirk >> >> >>> >>> I plan to enable it by default on Qt and EFL ports this week. If >>> somebody wants me to enable it on their ports please tell me, I'll be >>> happy to do it. >>> >>> Looking forward to your comments. >>> >>> Spec : http://www.w3.org/TR/css3-background/#the-background-position >>> >>> -- >>> Software Engineer @ >>> Intel Open Source Technology Center >>> _______________________________________________ >>> webkit-dev mailing list >>> [email protected] >>> http://lists.webkit.org/mailman/listinfo/webkit-dev >> > > > > -- > Software Engineer @ > Intel Open Source Technology Center > _______________________________________________ > webkit-dev mailing list > [email protected] > http://lists.webkit.org/mailman/listinfo/webkit-dev _______________________________________________ webkit-dev mailing list [email protected] http://lists.webkit.org/mailman/listinfo/webkit-dev
