Closed Bug 1282957 Opened 3 years ago Closed 3 years ago

Add a visual indicator for when APZ is disabled by scroll-linked effects

Categories

(Core :: Panning and Zooming, defect, P3)

defect

Tracking

()

RESOLVED FIXED
mozilla50
Tracking Status
firefox50 --- fixed

People

(Reporter: kats, Assigned: kats)

Details

(Whiteboard: [gfx-noted])

Attachments

(1 file)

Discussed this with Markus today, we should have a visual indicator for when APZ is disabled by scroll-linked effects. That way we can turn on the apz.disable_for_scroll_linked_effects pref when running locally and get a sense of which pages get APZ disabled even though they don't have any visual glitches (i.e. the false positive rate).
Attachment #8766085 - Flags: review?(mstange) → review+
Comment on attachment 8766085 [details]
Bug 1282957 - Add a visual indicator for pages affected by scroll-linked effects.

https://reviewboard.mozilla.org/r/61124/#review58226
Pushed by kgupta@mozilla.com:
https://hg.mozilla.org/integration/autoland/rev/a0bc72567903
Add a visual indicator for pages affected by scroll-linked effects. r=mstange
https://hg.mozilla.org/mozilla-central/rev/a0bc72567903
Status: NEW → RESOLVED
Closed: 3 years ago
Resolution: --- → FIXED
Target Milestone: --- → mozilla50
I'm running Nightly with this enabled, and it didn't take long for me to run into a site where APZ gets disabled because of a scroll-linked effect (fake-sticky-positioned toolbar). If I re-enable APZ on this site the behaviour looks decent, not noticeably laggy at all. Sites like this swing the balance in favour of leaving apz.disable_for_scroll_linked_effects as false.

https://www.softwarehamilton.com/2016/06/29/python-meetup-on-july-6th/
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