iOS & macOS Charting Documentation - SciChart iOS & macOS Charts SDK v4.x

ISCIViewportManagerBase

@protocol ISCIViewportManagerBase <ISCIAttachable>

Defines the interface to a ViewportManager, which may be used to intercept the X-Axis and Y-Axis ranging during render and invalidate the parent surface.


                        
                        
                        -onVisibleRangeChanged:oldRange:newRange:isAnimating:

Called when the VisibleRange changes for an axis.

Note

Override in derived types to set a custom value.

Declaration

Objective-C

- (void)onVisibleRangeChanged:(nonnull id<ISCIAxisCore>)axis
                     oldRange:(nonnull id<ISCIRange>)oldRange
                     newRange:(nonnull id<ISCIRange>)newRange
                  isAnimating:(BOOL)isAnimating;

Swift

func onVisibleRangeChanged(_ axis: any ISCIAxisCore, oldRange: any ISCIRange, newRange: any ISCIRange, isAnimating: Bool)

Parameters

`axis`	THe axis instance.
`oldRange`	The old VisibleRange.
`newRange`	The new VisibleRange.
`isAnimating`	Flag indicating whether the VisibleRange is animating.


                        
                        
                        -updateXAxis:

Called during render to update XAxis ISCIAxisCore.visibleRange.

Note

Override in derived types to set a custom value.

Declaration

Objective-C

- (void)updateXAxis:(nonnull id<ISCIAxisCore>)xAxis;

Swift

func updateXAxis(_ xAxis: any ISCIAxisCore)

Parameters


                                    xAxis

The XAxis to update


                        
                        
                        -updateYAxis:

Called during render to update YAxis ISCIAxisCore.visibleRange.

Note

Override in derived types to set a custom value.

Declaration

Objective-C

- (void)updateYAxis:(nonnull id<ISCIAxisCore>)yAxis;

Swift

func updateYAxis(_ yAxis: any ISCIAxisCore)

Parameters


                                    yAxis

The YAxis to update


                        
                        
                        -tryPerformAutoRange:

Called during render to perform autoranging.

Note

Override in derived types to set a custom value.

Declaration

Objective-C

- (void)tryPerformAutoRange:(nonnull id<ISCIAxisCore>)axis;

Swift

func tryPerformAutoRange(_ axis: any ISCIAxisCore)

Parameters


                                    axis

The ISCIAxisCore instance to perform autorange on.