[Webkit-unassigned] [Bug 233234] New: Need a way to test scrolling momentum animations
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Tue Nov 16 20:24:41 PST 2021
https://bugs.webkit.org/show_bug.cgi?id=233234
Bug ID: 233234
Summary: Need a way to test scrolling momentum animations
Product: WebKit
Version: Safari Technology Preview
Hardware: Unspecified
OS: Unspecified
Status: NEW
Severity: Normal
Priority: P2
Component: Tools / Tests
Assignee: webkit-unassigned at lists.webkit.org
Reporter: simon.fraser at apple.com
Currently WheelEventTestMonitor doesn't know about momentum animations, but even if it did, it's impossible to write a test that determines whether an "End" momentum event has interrupted the momentum. This is because we start the animator when we see the momentum "Began", ignoring the rest of the momentum changed. The animator runs on a display link callback on the scrolling thread, so we don't have a reliable way to know when the animator has run enough frames to move content around.
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