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: ISCIAxisCore, oldRange: ISCIRange, newRange: 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: 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: 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: ISCIAxisCore)
Parameters

axis

The ISCIAxisCore instance to perform autorange on.