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. dave ([email protected]) _______________________________________________ webkit-dev mailing list [email protected] http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev
