[Webkit-unassigned] [Bug 127521] Sideways 'wobble' when scrolling with trackpad on Mavericks

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=127521





--- Comment #3 from Beth Dakin <bdakin at apple.com>  2014-01-24 14:09:32 PST ---
(In reply to comment #2)
> (From update of attachment 222042 [details])
> View in context: https://bugs.webkit.org/attachment.cgi?id=222042&action=review
> 
> > Source/WebCore/platform/PlatformWheelEvent.h:129
> > +        void ignoreHorizontalDelta() { m_deltaX = 0; }
> > +        void ignoreVerticalDelta() { m_deltaY = 0; }
> 
> Is there a way to do this without mutating the platform event? Over the years, I have been trying to make these immutable.

We might be able to put the tracker down in the ElasticityController instead when we are handing the wheel event there, and that might allow us to avoid mutating the event.

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