Closed Bug 1460482 Opened 5 years ago Closed 5 years ago

Force root scrollframe overlay scrollbars to be positioned and on top of all content

Categories

(Core :: Web Painting, enhancement, P2)

enhancement

Tracking

()

RESOLVED FIXED
mozilla62
Tracking Status
firefox62 --- fixed

People

(Reporter: mattwoodrow, Assigned: mattwoodrow)

References

(Blocks 1 open bug)

Details

Attachments

(1 file)

Overlay scrollbars disable retained-dl, since their z-index positioning depends on the other content built in the display list.

For the root scrollframe, we should just be able to always force their scrollbars to z-index:INT32_MAX without issue, and then we have deterministic positioning.
Comment on attachment 8974604 [details]
Bug 1460482 - Force root scroll frame overlay scroll bars to be always on top.

https://reviewboard.mozilla.org/r/242970/#review249052
Attachment #8974604 - Flags: review?(mstange) → review+
Pushed by mwoodrow@mozilla.com:
https://hg.mozilla.org/integration/autoland/rev/fd3cab8c506a
Force root scroll frame overlay scroll bars to be always on top. r=mstange
https://hg.mozilla.org/mozilla-central/rev/fd3cab8c506a
Status: NEW → RESOLVED
Closed: 5 years ago
Resolution: --- → FIXED
Target Milestone: --- → mozilla62
Assignee: nobody → matt.woodrow
Is manual testing required for this fix? 
If yes, could you please provide some clear steps on how we can check this?

Thank you.
Flags: needinfo?(matt.woodrow)
No, this shouldn't need verification, it was just an internal optimization.
Flags: needinfo?(matt.woodrow)
Thanks for the prompt answer. Changing the flag accordingly.
Flags: qe-verify? → qe-verify-
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