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

SCIMultiPointAnnotationPlacementModifier

@interface SCIMultiPointAnnotationPlacementModifier
    : SCIAnnotationCreationModifierBase

Base gesture modifier for interactive placement of two-point trading drawing tools.

Interaction: touch down → places the first anchor point drag → moves the second anchor point live touch up → commits the annotation, which then becomes editable and selected

Note

This class provides the placement engine only. Use one of its concrete subclasses - SCIFibonacciRetracementCreationModifier, SCIMeasureCreationModifier or SCIStopLossTakeProfitCreationModifier - which create and style their own annotation type.

keepPlacingAfterComplete
Defines the value indicating whether the modifier keeps placing further annotations once one has been completed.

Note
Defaults to NO, so that the completed annotation can be edited straight away.
Declaration
Objective-C

@property (nonatomic) BOOL keepPlacingAfterComplete;
Swift

var keepPlacingAfterComplete: Bool { get set }
isPlacing
Gets the value indicating whether the user is currently placing an annotation.
Declaration
Objective-C

@property (nonatomic, readonly) BOOL isPlacing;
Swift

var isPlacing: Bool { get }
-startPlacement
Re-arms the modifier so that the next drag places a new annotation.

Note
Only needed when keepPlacingAfterComplete is NO.
Declaration
Objective-C

- (void)startPlacement;
Swift

func startPlacement()
-reset
Cancels any placement in progress and removes the incomplete annotation from the chart.
Declaration
Objective-C

- (void)reset;
Swift

func reset()

SCIMultiPointAnnotationPlacementModifier

Declaration

Declaration

Declaration

Declaration