- From: Boris Zbarsky <bzbarsky@MIT.EDU>
- Date: Wed, 26 May 2010 15:32:35 -0400
- To: David Hyatt <hyatt@apple.com>
- CC: www-style list <www-style@w3.org>
On 5/26/10 3:13 PM, David Hyatt wrote: >> Mozilla and WebKit already implemented *-start and *-end properties: >> http://help.dottoro.com/lcqbjiaw.php >> https://developer.mozilla.org/En/CSS:-moz-margin-start >> http://developer.apple.com/safari/library/documentation/AppleApplications/Reference/SafariCSSRef/Articles/StandardCSSProperties.html#//apple_ref/doc/uid/TP30001266--webkit-margin-start > > I can't speak for Mozilla, but in WebKit our *-start and *-end properties are faked. When applied to an element they resolve immediately to left or right (depending on the direction). We don't carry around a real notion (possibly inherited) that the start side should be used. In other words, if you have a RTL block inside a LTR block and the LTR block has margin-start:20px on it, and the RTL block has margin: inherit on it, you will get a left margin of 20px on the RTL block. In mozilla's implementation, *-start and *-end are effectively converted into *-left and *-right as needed when determining computed values. There is no separate computed value for *-start and *-end. A specified value like "*-start: inherit" in treated as either "*-left: inherit" or "*-right: inherit" depending on the directionality of the thing doing the inheriting. But the value inherited will obviously depend on the directionality of the parent, if the parent itself had a "*-start" specified. All of which sounds similar to what you describe for webkit. -Boris
Received on Wednesday, 26 May 2010 19:33:11 UTC