Commits on Aug 19, 2022

1. Overlay regions do not correctly handle sticky positioned scrolling n… …

   …odes
   
   https://bugs.webkit.org/show_bug.cgi?id=243973
   <rdar://98640826>
   
   Reviewed by Tim Horton.
   
   Sticky node regions should be added to the overlay regions but their rectangles
   can move during scrolling. Also fixed or sticky rectangles can change
   during page zoom.
   
   To support this, instead of storing a list of rectangles, store a list of
   layer IDs with event regions and then compute the rectangles.
   
   * Source/WebKit/UIProcess/API/ios/WKWebViewIOS.mm:
   (addOverlayEventRegions):
   Store only the layer ID.
   
   (-[WKWebView _updateOverlayRegions:destroyedLayers:]):
   Recompute the rectangles from the current frames of the nodes whenever the layer
   properties change. Scrolling and page zoom where this would be impacted both
   trigger a change in layer properties.
   
   * Source/WebKit/UIProcess/RemoteLayerTree/RemoteLayerTreeDrawingAreaProxy.h:
   Renamed function.
   
   * Source/WebKit/UIProcess/RemoteLayerTree/RemoteLayerTreeHost.h:
   (WebKit::RemoteLayerTreeHost::overlayRegionIDs const):
   (WebKit::RemoteLayerTreeHost::updateOverlayRegionIDs):
   Renamed.
   
   * Source/WebKit/UIProcess/RemoteLayerTree/ios/RemoteScrollingCoordinatorProxyIOS.mm:
   (WebKit::RemoteScrollingCoordinatorProxy::connectStateNodeLayers):
   Call renamed function.
   
   Canonical link: https://commits.webkit.org/253603@main

   

   mwyrzykowski authored and hortont424 committed Aug 19, 2022
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