24813 2009-03-25 13:22:54 -0700 Continuous scroll devices shouldn't use an SPI on Mac 2023-10-24 13:47:35 -0700 1 1 1 Unclassified WebKit Platform 528+ (Nightly build) Mac OS X 10.5 UNCONFIRMED P2 Normal --- 0 avi webkit-unassigned ahmad.saleem792 simon.fraser oldest_to_newest 115208 0 avi 2009-03-25 13:22:54 -0700 Currently, to support a continuous scroll device, WheelEventMac uses an SPI (wkGetWheelEventDeltas) (see http://trac.webkit.org/browser/trunk/WebCore/platform/mac/WheelEventMac.mm). This isn't necessary anymore in Leopard. In Chromium, we're using CGEvents to get the data we need. See http://src.chromium.org/viewvc/chrome/trunk/src/webkit/glue/webinputevent_mac.mm . WebKit should switch for two reasons: - The use of SPIs is bad and should be reduced - The measurement of scrolling units should agree across WebKit browsers. For example, the DOM scroll event should have non-accelerated ticks. We have that in Chromium. Does WebKit? It's hard to say as the SPI isn't documented. 1986414 1 ahmad.saleem792 2023-10-20 07:30:47 -0700 @Simon - is this still applicable? 1987226 2 simon.fraser 2023-10-24 13:47:35 -0700 Unsure without investigation.