[Webkit-unassigned] [Bug 171667] New: [Mac] Make frames fast-scrollable

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Thu May 4 09:32:13 PDT 2017


            Bug ID: 171667
           Summary: [Mac] Make frames fast-scrollable
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Frames
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: fred.wang at free.fr
                CC: simon.fraser at apple.com
            Blocks: 149264

>From bug 149264 comment 17, this involves:
> 1. Creating the right layer hierarchy with tiled backing store for the iframe contents, as we do for the main frame.
> 2. Creating ScrollingStateFrameScrollingNodes for them
> 3. Making sure the scrolling tree handles nested ScrollingStateFrameScrollingNodes properly
> 4. Not putting iframe's ScrollableAreas into the non-fast scrollable region
> 5. Teaching the scrolling thread to direct a mouse wheel at the appropriate ScrollingTreeFrameScrollingNode
> 6. Making sure that scroll latching works
> 7. Probably more

Referenced Bugs:

[Bug 149264] IFrame scrolling=yes is ignored in iOS Safari
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