MGLConstantStyleValue

 

@interface MGLConstantStyleValue <T> : MGLStyleValue<T>

An MGLConstantStyleValue object is a generic container for a style attribute value that remains constant as the zoom level changes. The layout and paint attribute properties of MGLStyleLayer objects can be set to MGLConstantStyleValue objects.

The MGLConstantStyleValue class takes a generic parameter T that indicates the Foundation class being wrapped by this class.

Creating a Style Constant Value

  • Creates and returns an MGLConstantStyleValue object containing a raw value.

    Declaration

    Objective-C

    + (nonnull instancetype)valueWithRawValue:(nonnull T)rawValue;

    Parameters

    rawValue

    The constant value contained by the object.

    Return Value

    An MGLConstantStyleValue object containing rawValue, which is treated as a constant value.

    View Source on GitHub

Initializing a Style Constant Value

  • Returns an MGLConstantStyleValue object containing a raw value.

    Declaration

    Objective-C

    - (nonnull instancetype)initWithRawValue:(nonnull T)rawValue;

    Swift

    init(rawValue: T)

    Parameters

    rawValue

    The value contained by the receiver.

    Return Value

    An MGLConstantStyleValue object containing rawValue.

    View Source on GitHub

Accessing the Underlying Value

  • The raw value contained by the receiver.

    Declaration

    Objective-C

    @property (assign, readwrite, nonatomic) T _Nonnull rawValue;

    Swift

    var rawValue: T { get set }
    View Source on GitHub