On Wed, Jun 11, 2014 at 10:41 AM, Kip Gilbert <kgilb...@mozilla.com> wrote:

> While beginning implementation I noticed that there is smooth
> scrolling functionality already implemented within
> ScrollFrameHelper::AsyncScroll, using simple splines via
> nsSMILKeySpline.  This smooth scrolling behavior is used internally
> and not exposed with XPCOM or WebIDL bindings.
>
> I would like feedback to determine if this same routine should be
> re-cycled, updated to match the proposed movement model, or kept as-is
> as a separate implementation for these internal use-cases.
>

I think we should replace it with your new approach. Where APZC is not
enabled, we should have a version of your new code which works on the main
thread. This would be similar to how AsyncScroll is currently organized.

I don't know of any UX reason to keep the current scrolling feel.

Rob
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