MainController_VisibilityEvent.kt

MainController_VisibilityEvent.kt

modelView {
    id("header view")
    onVisibilityStateChanged { model, view, visibilityState ->
       // Do something with the new visibility state
    } 
    onVisibilityChanged { model, view, percentVisibleHeight, percentVisibleWidth, visibleHeight, visibleWidth ,view -> 
       // Do something with the visibility information
    }
}