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

SCIModifierBehavior

@interface SCIModifierBehavior<__covariant T : id <ISCIChartModifierCore>>
    : NSObject <ISCIAttachable, ISCIThemeable>

Defines a base class with behavior for ISCIChartModifierCore implementors.

Note

T is the type of modifier to which this behavior will be attached.

Warning

Designed to be an abstract class, hence should be used for inheritance only. No direct initializations.

isEnabled
Gets a value indicating whether the current SCIModifierBehavior instance is enabled on the related ISCIChartModifier instance.
Declaration
Objective-C

@property (nonatomic) BOOL isEnabled;
Swift

var isEnabled: Bool { get set }
-initWithModifierType:
Creates a new instance of SCIModifierBehavior class.
Declaration
Objective-C

- (nonnull instancetype)initWithModifierType:(nonnull Class)modifierType;
Swift

init(modifierType: AnyClass)
Parameters

modifierType

Type of the modifier to which this modifier will be attached.
-onBeginUpdateWithArgs:
Called when associated ISCIChartModifier instance handle touches began event.
Declaration
Objective-C

- (void)onBeginUpdateWithArgs:(nonnull SCIGestureModifierEventArgs *)args;
Swift

func onBeginUpdate(with args: SCIGestureModifierEventArgs)
Parameters

args

The gesture modifier event argumens.
-onUpdateWithArgs:
Called when associated ISCIChartModifier instance handle touches moved event.
Declaration
Objective-C

- (void)onUpdateWithArgs:(nonnull SCIGestureModifierEventArgs *)args;
Swift

func onUpdate(with args: SCIGestureModifierEventArgs)
Parameters

args

The gesture modifier event argumens.
-onEndUpdateWithArgs:
Called when associated ISCIChartModifier instance handle touches ended event.
Declaration
Objective-C

- (void)onEndUpdateWithArgs:(nonnull SCIGestureModifierEventArgs *)args;
Swift

func onEndUpdate(with args: SCIGestureModifierEventArgs)
Parameters

args

The gesture modifier event argumens.
-clear
Clears SCIModifierBehavior.lastUpdatePoint x and y to NaN values.
Declaration
Objective-C

- (void)clear;
Swift

func clear()




+attachBehavior:toModifier:withIsEnabled:

Attaches the SCIModifierBehavior instance to the ISCIChartModifierCore instance with isEnabled value passed in.

Declaration

Objective-C

+ (void)attachBehavior:(nonnull SCIModifierBehavior<T> *)behavior
            toModifier:(nonnull id<ISCIChartModifierCore>)modifier
         withIsEnabled:(BOOL)isEnabled;

Swift

class func attach(_ behavior: SCIModifierBehavior<T>, toModifier modifier: ISCIChartModifierCore, withIsEnabled isEnabled: Bool)

Parameters

`behavior`	The `SCIModifierBehavior` instance which will be attached to the passed in `ISCIChartModifierCore` instance.
`modifier`	The `ISCIChartModifierCore` instance to which the passed in `SCIModifierBehavior` instance will be attached.
`isEnabled`	Value which identifies whether the `SCIModifierBehavior` instance is enabled or not.