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

SCIDrawableText

@interface SCIDrawableText : NSObject <ISCIInvalidatableElement, ISCICleanable>

Provides a class whicih can draw NSAttributedString onto CGContextRef.




text

Defines the string with label value for this annotation.

Declaration

Objective-C

@property (nonatomic, copy, nullable) NSString *text;

Swift

var text: String? { get set }




attributedText

Defines the attributed string with label value for this annotation.

Warning

If set - Ignores the labelValue.

Declaration

Objective-C

@property (nonatomic, copy, nullable) NSAttributedString *attributedText;

Swift

@NSCopying var attributedText: NSAttributedString? { get set }




fontStyle

Defines the font style for text.

Declaration

Objective-C

@property (nonatomic, strong, nonnull) SCIFontStyle *fontStyle;

Swift

var fontStyle: SCIFontStyle { get set }

rotationAngle
Gets or sets the rotation angle for this text in degrees.
Declaration
Objective-C

@property (nonatomic) float rotationAngle;
Swift

var rotationAngle: Float { get set }




drawableSize

Returns TickLabel size in Pixels.

Declaration

Objective-C

@property (nonatomic, readonly) CGSize drawableSize;

Swift

var drawableSize: CGSize { get }

padding
The default spacing used when laying out internal text.

Note
Sizes are in Points.
Declaration
Objective-C

@property (nonatomic) UIEdgeInsets padding;
Swift

var padding: UIEdgeInsets { get set }




sizeWithMargins

Returns DrawableText size including margins in Points.

Declaration

Objective-C

@property (nonatomic, readonly) CGSize sizeWithMargins;

Swift

var sizeWithMargins: CGSize { get }

Draw

-tryDrawToCGContext:
Tries to draw this DrawableText instance onto CGContextRef at specified CGPoint.
Declaration
Objective-C

- (void)tryDrawToCGContext:(nonnull CGContextRef)context;
Swift

func tryDraw(to context: CGContext)
Parameters

context

The CGContextRef instance to draw text on.




-onDrawTextWithContext:assetManager:inFrame:

Draws this text instance inside passed in frame.

Declaration

Objective-C

- (void)onDrawTextWithContext:(nonnull id<ISCIRenderContext2D>)renderContext
                 assetManager:(nonnull id<ISCIAssetManager2D>)assetManager
                      inFrame:(CGRect)frame;

Swift

func onDrawText(_ renderContext: ISCIRenderContext2D, assetManager: ISCIAssetManager2D, in frame: CGRect)

Parameters

`renderContext`	The render context instance to draw on.
`assetManager`	The asset manager associated with render context.
`frame`	The frame to draw text in.