Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 5ae7317c43cdc8799371c8f0cbde1dc5c683ae78
https://github.com/WebKit/WebKit/commit/5ae7317c43cdc8799371c8f0cbde1dc5c683ae78
Author: Simon Fraser <[email protected]>
Date: 2023-07-24 (Mon, 24 Jul 2023)
Changed paths:
M Source/WebKit/Platform/spi/ios/UIKitSPI.h
M Source/WebKit/UIProcess/ApplicationStateTracker.h
M Source/WebKit/UIProcess/ApplicationStateTracker.mm
M Source/WebKit/UIProcess/ios/WKApplicationStateTrackingView.mm
Log Message:
-----------
[iOS] Safari window sometimes flashes black when app switching or tab
switching
https://bugs.webkit.org/show_bug.cgi?id=259455
rdar://107673739
Reviewed by Tim Horton.
WebKit relies on the _UIApplicationDidFinishSuspensionSnapshotNotification
notification to do two things
in WebPageProxy::applicationDidFinishSnapshottingAfterEnteringBackground(): if
layers contain Mach port
contents, map in IOSurfaces for those so that we don't hold an in-use count
which prevents the layers from
becoming volatile (no longer applicable now that layers hold CAIOSurfaceRefs),
and storing a TransactionID
in RemoteLayerTreeDrawingAreaProxy::hideContentUntilPendingUpdate() to keep
content hidden until we get
a new transaction on resume.
UIKit stopped sending that notification a few years ago (rdar://112569013) so
just hook up our call to
`applicationDidFinishSnapshottingAfterEnteringBackground()` at the end of
`_didCompleteSnapshotSequence`.
Also add some release logging for background snapshotting.
* Source/WebKit/Platform/spi/ios/UIKitSPI.h:
* Source/WebKit/UIProcess/ApplicationStateTracker.h:
* Source/WebKit/UIProcess/ApplicationStateTracker.mm:
(WebKit::ApplicationStateTracker::ApplicationStateTracker):
(WebKit::ApplicationStateTracker::~ApplicationStateTracker):
(WebKit::ApplicationStateTracker::applicationDidFinishSnapshottingAfterEnteringBackground):
Deleted.
* Source/WebKit/UIProcess/ios/WKApplicationStateTrackingView.mm:
(-[WKApplicationStateTrackingView didMoveToWindow]):
(-[WKApplicationStateTrackingView
_applicationDidFinishSnapshottingAfterEnteringBackground]):
(-[WKApplicationStateTrackingView _willBeginSnapshotSequence]):
(-[WKApplicationStateTrackingView _didCompleteSnapshotSequence]):
Canonical link: https://commits.webkit.org/266274@main
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