[Webkit-unassigned] [Bug 186840] New: [GTK][ThreadedRendering] Do not try to render scrollbars if the GraphicsContext doesn't have a PlatformContext

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=186840

            Bug ID: 186840
           Summary: [GTK][ThreadedRendering] Do not try to render
                    scrollbars if the GraphicsContext doesn't have a
                    PlatformContext
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit Gtk
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: magomez at igalia.com
                CC: bugs-noreply at webkitgtk.org

Scrollbars in wkgtk are rendered by the gtk theme using cairo directly. In order to do this, the cairo cr of the current GraphicsContext is gotten through the PlatformContext.

But when using threaded rendering, the GraphicsContext used for recording the commands doesn't have a PlatformContext, so when trying to draw the scrollbars there's a crash.

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