- From: Tab Atkins Jr. <jackalmage@gmail.com>
- Date: Fri, 12 Aug 2011 13:54:08 -0700
- To: Jonas Sicking <jonas@sicking.cc>
- Cc: robert@ocallahan.org, Vincent Scheib <scheib@google.com>, Klaas Heidstra <klaas1988@gmail.com>, Brandon Andrews <warcraftthreeft@sbcglobal.net>, Olli@pettay.fi, Ryosuke Niwa <rniwa@webkit.org>, Adam Barth <w3c@adambarth.com>, "Gregg Tavares (wrk)" <gman@google.com>, Glenn Maynard <glenn@zewt.org>, Charles Pritchard <chuck@jumis.com>, Kenneth Russell <kbr@google.com>, public-webapps@w3.org
On Fri, Aug 12, 2011 at 1:19 PM, Jonas Sicking <jonas@sicking.cc> wrote: > On Fri, Aug 12, 2011 at 9:53 AM, Tab Atkins Jr. <jackalmage@gmail.com> wrote: >> On Thu, Aug 11, 2011 at 10:14 PM, Robert O'Callahan >> <robert@ocallahan.org> wrote: >>> If your implementation had to warp the mouse cursor on Windows to get >>> accurate delta information, the mouse position in the existing mouse >>> events would no longer be very meaningful and a new event type seemed >>> more logical. But assuming Klaas is right, we no longer need to worry >>> about this. It seems we can unconditionally add delta information to >>> existing mouse events. So I withdraw that comment. >> >> I suspect that, while locked, we still don't actually want to expose >> the various x and y properties for the mouse. I agree with Vincent >> that the *other* mouseevent properties are all useful, though, and >> that the delta properties are really useful in non-mouselock >> situations. >> >> We should just zero all the position information. Even if we can >> switch all OSes to a delta mode, the position will be arbitrary and >> meaningless. This seems easier than making a new type of mouse event >> that exposes all of normal mouse events except the position, and >> ensuring that the two stay in sync when we add new info. > > If we expose delta information in all mouse events, which seems like > it could be a good idea, then what is the usecase for the success > callback for mouselock? > > I was under the impression that that was so that the page could start > treating mousemove events differently, but if all mousemove events > have deltas, then that won't be needed, no? No, it's still definitely needed. You can't do an FPS with non-locked deltas; the user will end up moving their mouse off the screen. The use-cases for delta-without-mouselock are pretty separate from those for delta-within-mouselock. ~TJ
Received on Friday, 12 August 2011 20:54:57 UTC