[Webkit-unassigned] [Bug 172226] New: [WK1] RenderElement::isVisibleInDocumentRect() always returns true when give FrameView::windowClipRect()

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=172226

            Bug ID: 172226
           Summary: [WK1] RenderElement::isVisibleInDocumentRect() always
                    returns true when give FrameView::windowClipRect()
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: sabouhallawa at apple.com
                CC: bfulgham at webkit.org, simon.fraser at apple.com,
                    zalan at apple.com

The behavior is different on WK2 from WK1. We need a way to check whether the RenderElement is visible in the viewport or not. The accuracy of this check is needed to pause the animation and to destroy the decoded frames for the elements outside the viewport.

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