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

ISCILayoutManager

@protocol ISCILayoutManager <ISCIAttachable>

Defines interface to a Layout Manager, which may be used to layout SCIChartSurface parts.


                        
                        
                        -attachAxis:isXAxis:

Attaches axis to parent SCIChartSurface via current LayoutManager.

Declaration

Objective-C

- (void)attachAxis:(nonnull id<ISCIAxis>)axis isXAxis:(BOOL)isXAxis;

Swift

func attach(_ axis: any ISCIAxis, isXAxis: Bool)

Parameters

`axis`	The `ISCIAxis` to attach.
`isXAxis`	The value indicating whether the axis is XAxis or YAxis.


                        
                        
                        -detachAxis:

Detaches axis from parent SCIChartSurface via current LayoutManager.

Declaration

Objective-C

- (void)detachAxis:(nonnull id<ISCIAxis>)axis;

Swift

func detach(_ axis: any ISCIAxis)

Parameters


                                    axis

The ISCIAxis to detach.


                        
                        
                        -onAxisPlacementChanged:oldAxisAlignment:oldIsCenterAxis:newAxisAlignment:newIsCenterAxis:

Called when axis is about to change its placement.

Declaration

Objective-C

- (void)onAxisPlacementChanged:(nonnull id<ISCIAxis>)axis
              oldAxisAlignment:(SCIAxisAlignment)oldAxisAlignment
               oldIsCenterAxis:(BOOL)oldIsCenterAxis
              newAxisAlignment:(SCIAxisAlignment)newAxisAlignment
               newIsCenterAxis:(BOOL)newIsCenterAxis;

Swift

func onAxisPlacementChanged(_ axis: any ISCIAxis, oldAxisAlignment: SCIAxisAlignment, oldIsCenterAxis: Bool, newAxisAlignment: SCIAxisAlignment, newIsCenterAxis: Bool)

Parameters

`axis`	axis which changes its position.
`oldAxisAlignment`	old axis alignment value.
`oldIsCenterAxis`	old isCenterAxis value.
`newAxisAlignment`	new axis alignment value.
`newIsCenterAxis`	new isCenterAxis value.


                        
                        
                        -onLayoutChartWithAvailableSize:

Called during render pass of chart before rendering and should update positions of chart parts.

Declaration

Objective-C

- (CGSize)onLayoutChartWithAvailableSize:(CGSize)size;

Swift

func onLayoutChart(withAvailableSize size: CGSize) -> CGSize

Parameters


                                    size

available viewport size.

Return Value

The measured size of viewport.