The following tables list the members exposed by NViewportBase.
| Name | Description | |
|---|---|---|
  | AutoScrollerChild | Reference to the AutoScroller child. |
| IsScrollingProperty | Reference to the IsScrolling property. |
| NViewportBaseSchema | Schema associated with NViewportBase. |
| PreviewOverlayChild | Reference to the PreviewLayer child. |
| Name | Description | |
|---|---|---|
 | AutoScroller | Gets or sets the auto scroller child that control the auto scroll capabilities of this viewport. |
| IsScrolling | Gets whether the viewport is currently being continuosly scrolled, either by dragging the scrollbar thumbs or by pressing the scrollbar arrows. Automatically updated by Nevron. |
| PreviewOverlay | Gets or sets the preview overlay of this viewport. |
| Name | Description | |
|---|---|---|
 | AccumulateDisplayChildren | Overridden. Appends the display children of the node to the provided list |
| ScrollInDirection | Scrolls the viewport in the specified direction, with the specified amount of steps. |
| Name | Description | |
|---|---|---|
 | AccumulateContentDisplayChildren | Accumulates the display children of the node that are considered to be content. |
| ArrangeInnerAdorners | Overridden. Layouts the inner adorners. This method is typically called last - after the visibility of the adorners has been computed in the layout phase. |
| ArrangeViewport | Arranges the viewport. This operation performs a viewport ZoomMode specific action. This method should be called by derived classes, to update the ViewportOrigin, ZoomFactor and Scrollbars. |
| ArrangeViewportFit | Performs the viewport layout in case of a Fit zoom mode. |
| ArrangeViewportFitToHeight | Performs the viewport layout in case of a FitToHeight zoom mode. |
| ArrangeViewportFitToWidth | Performs the viewport layout in case of a FitToWidth zoom mode. |
| ArrangeViewportNormal | Performs the viewport layout in case of a Normal zoom mode. |
| ComputeViewportSize | Computes the viewport size based on the specified window size |
| ComputeWindowSize | Computes the window size based on a content rect and the specified scrollbars visibility. |
| GetHScrollBar | Must override to return the horizontal scroll bar |
| GetHScrollBarSettings | Gets the settings that need to be applied to the HScrollBar for the specified viewport parameters, in case the HScrollBar is visible. |
| GetHScrollMode | Gets the horizontal scrolling mode |
| GetNoScrollHAlign | Gets the horizontal alignment of the viewport relative to the window in case there is no horizontal scrollbar. |
| GetNoScrollVAlign | Gets the vertical alignment of the viewport relative to the window in case there is no horizontal scrollbar. |
| GetTotalViewport | Gets the total viewport rectangle |
| GetViewportOrigin | Gets the viewport origin |
| GetVScrollBar | Must override to return the vertical scroll bar |
| GetVScrollBarSettings | Gets the settings that need to be applied to the VScrollBar for the viewport parameters, in case the VScrollBar is visible. |
| GetVScrollMode | Gets the vertical scrolling mode |
| GetZoomFactor | Gets the viewport zoom factor |
| GetZoomMode | Get the zoom mode which defines the way in which the viewport is scaled to the window |
| NeedsHScrollBar | Determines the need for a horizontal scrollbar based on a proposed viewport size |
| NeedsVScrollBar | Determines the need for a vertical scrollbar based on a proposed viewport size |
| OnEndScrolling | Called when the viewport stops to be continuosly scrolled. |
| OnHScrollBarScroll | Called when the HScrollbar is scrolled. Updates the viewport origin from the scrollbar value. |
| OnStartScrolling | Called when the viewport starts to be continuosly scrolled. |
| OnVScrollBarScroll | Called when the VScrollbar is scrolled. Updates the viewport origin from the scrollbar value. |
| SetViewportOrigin | Sets the viewport origin |
| SetZoomFactor | Sets the viewport zoom factor |
| UpdateScrollbars | Updates the scrollbars of the viewport. |
