> On Jun 9, 2010, at 3:51 PM, David Hyatt wrote: >> On Jun 9, 2010, at 2:25 AM, Andy Estes wrote: >> >>> >>> On Jun 8, 2010, at 8:34 PM, Nathan Vander Wilt wrote: >>> >>>> What Safari 4 seemed to do was simply provide much greater precision, >>>> where scrolling half a line simply yielded about 20 units instead of being >>>> ignored. So the above code would yield integral deltas in browsers that >>>> only fired events in 3-line increments, but nice fractional deltas in >>>> WebKit. >>> >>> Some sites choose to completely ignore wheel deltas less than 120. On >>> devices like trackpads where a slow but continuous scrolling gesture tends >>> to result in a series of small, non-cumulative mousewheel events, the old >>> behavior caused these gestures to be completely ignored. Yahoo! Mail was >>> one such site where the small fractional values caused compatibility issues. >>> >>>> What Safari 5's WebKit does is turn one "line" into 4800 (!) units instead >>>> of 40. >>> >>> This could be plausible on a trackpad that scales the wheelDelta based on >>> gesture velocity, although I'd expect a value of 120 for each tick of a >>> conventional wheel mouse. As Peter said, if you have a test case where >>> Safari disagrees with IE on Windows or Chrome on either platform, please >>> file a bug and we'll investigate. >> >> Just a guess, but we might have a regression when dealing with the >> continuous events generated by a MacBook trackpad.
For those following along at home, looks like this issue is being tracked (and discussed) via https://bugs.webkit.org/show_bug.cgi?id=29601 -nvw _______________________________________________ webkit-dev mailing list [email protected] http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev
