Botond Ballo [:botond] Assignee
	Description • 7 years ago

Bug 1105109 is adding an APZ implementation of autoscrolling, behind the pref apz.autoscroll.enabled, which will initially be disabled by default.

This bug tracks enabling enabling the pref by default.

	Botond Ballo [:botond] Assignee
	Comment 1 • 7 years ago

Moving over Quantum tracking flags from bug 1105109.

	Kartikaya Gupta (email:kats@mozilla.staktrace.com)
	Comment 3 • 7 years ago
mozreview-review

Comment on attachment 8903694 [details]
Bug 1385463 - Have APZ autoscrolling ride the trains.

https://reviewboard.mozilla.org/r/175476/#review180576

	Pulsebot
	Comment 4 • 7 years ago

Pushed by bballo@mozilla.com:
https://hg.mozilla.org/integration/autoland/rev/68c2a6565325
Have APZ autoscrolling ride the trains. r=kats

	Sebastian Hengst [:aryx] (needinfo me if it's about an intermittent or backout)
	Comment 5 • 7 years ago
bugherder

https://hg.mozilla.org/mozilla-central/rev/68c2a6565325

	Pascal Chevrel:pascalc (PTO until August 21)
	Comment 6 • 7 years ago

Botond, should that be mentioned in Firefox nightly/beta release notes?

	Botond Ballo [:botond] Assignee
	Comment 7 • 7 years ago

(In reply to Pascal Chevrel:pascalc from comment #6)
> Botond, should that be mentioned in Firefox nightly/beta release notes?

Yep, I think that would be a good idea. APZ keyboard scrolling was enabled in 57 as well (bug 1376525), we should mention that too.

	Botond Ballo [:botond] Assignee
	Comment 8 • 7 years ago

Release Note Request (optional, but appreciated)
[Why is this notable]:
  Asynchronous scrolling provides a smoother / less janky scrolling
  experience for users. This bug brings async scrolling to the
  browser's "autoscroll" feature, one of the few remaining scrolling
  methods that don't have it yet.

[Affects Firefox for Android]:
  No.

  (Technically, the answer may be "yes" - I'm not actually sure if
  autoscrolling works on Android, if it does then APZ will apply
  to it too - but as mouse input is very rare Android, it's not 
  worth mentioning.)

[Suggested wording]:
  The browser's "autoscrolling" feature now uses asynchronous scrolling,
  similar to other input methods like mousewheel, providing a smoother
  scrolling experience.

[Links (documentation, blog post, etc)]:
  Nothing specifically for autoscrolling, but some links for APZ
  in general:

  wiki: https://wiki.mozilla.org/Platform/GFX/APZ
  blog post: https://blog.mozilla.org/firefox/smooth-scrolling-web-browser-removes-jank/

	Petruta Horea [:phorea], Desktop QA
	Comment 9 • 7 years ago

Marking as verified since checking that apz.autoscroll.enabled pref is set to true was tested for pre-Beta sign off in Firefox 57.0a1 across platforms.

	Ritu Kothari (:ritu) (Inactive, please n-i to RyanVM, jcristau, or pascal)
	Comment 10 • 7 years ago

This was added to 57 beta release notes.