Layout a scroller button with appropriate separator space around it.
상속: ComponentFactory.Krypton.Toolkit.ViewComposite
        /// <summary>
        /// Initialize a new instance of the ViewLayoutRibbonScrollPort class.
        /// </summary>
        /// <param name="ribbon">Reference to owning ribbon control.</param>
        /// <param name="orientation">Viewport orientation.</param>
        /// <param name="viewFiller">View to size and position.</param>
        /// <param name="insetForTabs">Should scoller be inset for use in tabs area.</param>
        /// <param name="scrollSpeed">Scrolling speed.</param>
        /// <param name="needPaintDelegate">Delegate for notifying paint/layout requests.</param>
        public ViewLayoutRibbonScrollPort(KryptonRibbon ribbon,
                                          Orientation orientation,
                                          ViewBase viewFiller,
                                          bool insetForTabs,
                                          int scrollSpeed,
                                          NeedPaintHandler needPaintDelegate)
        {
            Debug.Assert(ribbon != null);
            Debug.Assert(viewFiller != null);
            Debug.Assert(needPaintDelegate != null);

            // Remember initial settings
            _ribbon            = ribbon;
            _orientation       = orientation;
            _viewFiller        = viewFiller;
            _needPaintDelegate = needPaintDelegate;
            _scrollSpeed       = scrollSpeed;
            _ribbonTabs        = viewFiller as ViewLayoutRibbonTabs;

            // Default to left hand scroll position
            _scrollOffset = 0;

            // Place the child view inside a actual control, so that the contents of the
            // filler are clipped to the control size. This is needed if the child view
            // contains controls and need clipping inside this area and so prevent them
            // from drawing over the end scrollers.
            _viewControlContent = new RibbonViewControl(ribbon);
            _viewControlContent.PaintBackground += OnViewControlPaintBackground;
            ViewLayoutControl = new ViewLayoutControl(_viewControlContent, ribbon, _viewFiller);

            // For ribbon tabs we want to monitor and intercept the WM_NCHITTEST so that the remainder of the
            // tabs area acts like the application title bar and can be used to manipulate the application
            if (_ribbonTabs != null)
            {
                ViewLayoutControl.ChildControl.WndProcHitTest += OnChildWndProcHitTest;
            }

            // Create the two scrollers used when not enough space for filler
            _nearScroller = new ViewLayoutRibbonScroller(ribbon, NearOrientation, insetForTabs, needPaintDelegate);
            _farScroller  = new ViewLayoutRibbonScroller(ribbon, FarOrientation, insetForTabs, needPaintDelegate);

            // Hook into scroller events
            _nearScroller.Click += OnNearClick;
            _farScroller.Click  += OnFarClick;

            // Add elements in correct order
            Add(ViewLayoutControl);
            Add(_nearScroller);
            Add(_farScroller);
        }
        /// <summary>
        /// Initialize a new instance of the ViewLayoutRibbonScrollPort class.
        /// </summary>
        /// <param name="ribbon">Reference to owning ribbon control.</param>
        /// <param name="orientation">Viewport orientation.</param>
        /// <param name="viewFiller">View to size and position.</param>
        /// <param name="insetForTabs">Should scoller be inset for use in tabs area.</param>
        /// <param name="scrollSpeed">Scrolling speed.</param>
        /// <param name="needPaintDelegate">Delegate for notifying paint/layout requests.</param>
        public ViewLayoutRibbonScrollPort(KryptonRibbon ribbon,
                                          Orientation orientation,
                                          ViewBase viewFiller,
                                          bool insetForTabs,
                                          int scrollSpeed,
                                          NeedPaintHandler needPaintDelegate)
        {
            Debug.Assert(ribbon != null);
            Debug.Assert(viewFiller != null);
            Debug.Assert(needPaintDelegate != null);

            // Remember initial settings
            _ribbon = ribbon;
            _orientation = orientation;
            _viewFiller = viewFiller;
            _needPaintDelegate = needPaintDelegate;
            _scrollSpeed = scrollSpeed;
            _ribbonTabs = viewFiller as ViewLayoutRibbonTabs;

            // Default to left hand scroll position
            _scrollOffset = 0;

            // Place the child view inside a actual control, so that the contents of the
            // filler are clipped to the control size. This is needed if the child view
            // contains controls and need clipping inside this area and so prevent them
            // from drawing over the end scrollers.
            _viewControlContent = new RibbonViewControl(ribbon);
            _viewControlContent.PaintBackground += new PaintEventHandler(OnViewControlPaintBackground);
            _viewControl = new ViewLayoutControl(_viewControlContent, ribbon, _viewFiller);

            // For ribbon tabs we want to monitor and intercept the WM_NCHITTEST so that the remainder of the
            // tabs area acts like the application title bar and can be used to manipulate the application
            if (_ribbonTabs != null)
                _viewControl.ChildControl.WndProcHitTest += new EventHandler<ViewControlHitTestArgs>(OnChildWndProcHitTest);

            // Create the two scrollers used when not enough space for filler
            _nearScroller = new ViewLayoutRibbonScroller(ribbon, NearOrientation, insetForTabs, needPaintDelegate);
            _farScroller = new ViewLayoutRibbonScroller(ribbon, FarOrientation, insetForTabs, needPaintDelegate);

            // Hook into scroller events
            _nearScroller.Click += new EventHandler(OnNearClick);
            _farScroller.Click += new EventHandler(OnFarClick);

            // Add elements in correct order
            Add(_viewControl);
            Add(_nearScroller);
            Add(_farScroller);
        }