path: root/platform/darwin/src/MGLFillStyleLayer.h

// This file is generated.
// Edit platform/darwin/scripts/generate-style-code.js, then run `make darwin-style-code`.

#import "MGLFoundation.h"
#import "MGLVectorStyleLayer.h"

NS_ASSUME_NONNULL_BEGIN

/**
 Controls the frame of reference for `MGLFillStyleLayer.fillTranslation`.

 Values of this type are used in the `MGLFillStyleLayer.fillTranslationAnchor`
 property.
 */
typedef NS_ENUM(NSUInteger, MGLFillTranslationAnchor) {
    /**
     The fill is translated relative to the map.
     */
    MGLFillTranslationAnchorMap,
    /**
     The fill is translated relative to the viewport.
     */
    MGLFillTranslationAnchorViewport,
};

/**
 An `MGLFillStyleLayer` is a style layer that renders one or more filled (and
 optionally stroked) polygons on the map.
 
 Use a fill style layer to configure the visual appearance of polygon or
 multipolygon features. These features can come from vector tiles loaded by an
 `MGLVectorTileSource` object, or they can be `MGLPolygon`, `MGLPolygonFeature`,
 `MGLMultiPolygon`, or `MGLMultiPolygonFeature` instances in an `MGLShapeSource`
 or `MGLComputedShapeSource` object.

 You can access an existing fill style layer using the
 `-[MGLStyle layerWithIdentifier:]` method if you know its identifier;
 otherwise, find it using the `MGLStyle.layers` property. You can also create a
 new fill style layer and add it to the style using a method such as
 `-[MGLStyle addLayer:]`.

 ### Example

 ```swift
 let layer = MGLFillStyleLayer(identifier: "parks", source: parks)
 layer.sourceLayerIdentifier = "parks"
 layer.fillColor = NSExpression(forConstantValue: UIColor.green)
 layer.predicate = NSPredicate(format: "type == %@", "national-park")
 mapView.style?.addLayer(layer)
 ```
 */
MGL_EXPORT
@interface MGLFillStyleLayer : MGLVectorStyleLayer

/**
 Returns a fill style layer initialized with an identifier and source.

 After initializing and configuring the style layer, add it to a map view’s
 style using the `-[MGLStyle addLayer:]` or
 `-[MGLStyle insertLayer:belowLayer:]` method.

 @param identifier A string that uniquely identifies the source in the style to
    which it is added.
 @param source The source from which to obtain the data to style. If the source
    has not yet been added to the current style, the behavior is undefined.
 @return An initialized foreground style layer.
 */
- (instancetype)initWithIdentifier:(NSString *)identifier source:(MGLSource *)source;

#pragma mark - Accessing the Paint Attributes

/**
 Whether or not the fill should be antialiased.
 
 The default value of this property is an expression that evaluates to `YES`.
 Set this property to `nil` to reset it to the default value.
 
 This attribute corresponds to the <a
 href="https://www.mapbox.com/mapbox-gl-style-spec/#paint-fill-antialias"><code>fill-antialias</code></a>
 layout property in the Mapbox Style Specification.
 
 You can set this property to an expression containing any of the following:
 
 * Constant Boolean values
 * Predefined functions, including mathematical and string operators
 * Conditional expressions
 * Variable assignments and references to assigned variables
 * Step functions applied to the `$zoomLevel` variable
 
 This property does not support applying interpolation functions to the
 `$zoomLevel` variable or applying interpolation or step functions to feature
 attributes.
 */
@property (nonatomic, null_resettable, getter=isFillAntialiased) NSExpression *fillAntialiased;

@property (nonatomic, null_resettable) NSExpression *fillAntialias __attribute__((unavailable("Use fillAntialiased instead.")));

#if TARGET_OS_IPHONE
/**
 The color of the filled part of this layer.
 
 The default value of this property is an expression that evaluates to
 `UIColor.blackColor`. Set this property to `nil` to reset it to the default
 value.
 
 This property is only applied to the style if `fillPattern` is set to `nil`.
 Otherwise, it is ignored.
 
 You can set this property to an expression containing any of the following:
 
 * Constant `UIColor` values
 * Predefined functions, including mathematical and string operators
 * Conditional expressions
 * Variable assignments and references to assigned variables
 * Interpolation and step functions applied to the `$zoomLevel` variable and/or
 feature attributes
 */
@property (nonatomic, null_resettable) NSExpression *fillColor;
#else
/**
 The color of the filled part of this layer.
 
 The default value of this property is an expression that evaluates to
 `NSColor.blackColor`. Set this property to `nil` to reset it to the default
 value.
 
 This property is only applied to the style if `fillPattern` is set to `nil`.
 Otherwise, it is ignored.
 
 You can set this property to an expression containing any of the following:
 
 * Constant `NSColor` values
 * Predefined functions, including mathematical and string operators
 * Conditional expressions
 * Variable assignments and references to assigned variables
 * Interpolation and step functions applied to the `$zoomLevel` variable and/or
 feature attributes
 */
@property (nonatomic, null_resettable) NSExpression *fillColor;
#endif

/**
 The transition affecting any changes to this layer’s `fillColor` property.

 This property corresponds to the `fill-color-transition` property in the style JSON file format.
*/
@property (nonatomic) MGLTransition fillColorTransition;

/**
 The opacity of the entire fill layer. In contrast to the `fillColor`, this
 value will also affect the 1pt stroke around the fill, if the stroke is used.
 
 The default value of this property is an expression that evaluates to the float
 1. Set this property to `nil` to reset it to the default value.
 
 You can set this property to an expression containing any of the following:
 
 * Constant numeric values between 0 and 1 inclusive
 * Predefined functions, including mathematical and string operators
 * Conditional expressions
 * Variable assignments and references to assigned variables
 * Interpolation and step functions applied to the `$zoomLevel` variable and/or
 feature attributes
 */
@property (nonatomic, null_resettable) NSExpression *fillOpacity;

/**
 The transition affecting any changes to this layer’s `fillOpacity` property.

 This property corresponds to the `fill-opacity-transition` property in the style JSON file format.
*/
@property (nonatomic) MGLTransition fillOpacityTransition;

#if TARGET_OS_IPHONE
/**
 The outline color of the fill. Matches the value of `fillColor` if unspecified.
 
 This property is only applied to the style if `fillPattern` is set to `nil`,
 and `fillAntialiased` is set to an expression that evaluates to `YES`.
 Otherwise, it is ignored.
 
 You can set this property to an expression containing any of the following:
 
 * Constant `UIColor` values
 * Predefined functions, including mathematical and string operators
 * Conditional expressions
 * Variable assignments and references to assigned variables
 * Interpolation and step functions applied to the `$zoomLevel` variable and/or
 feature attributes
 */
@property (nonatomic, null_resettable) NSExpression *fillOutlineColor;
#else
/**
 The outline color of the fill. Matches the value of `fillColor` if unspecified.
 
 This property is only applied to the style if `fillPattern` is set to `nil`,
 and `fillAntialiased` is set to an expression that evaluates to `YES`.
 Otherwise, it is ignored.
 
 You can set this property to an expression containing any of the following:
 
 * Constant `NSColor` values
 * Predefined functions, including mathematical and string operators
 * Conditional expressions
 * Variable assignments and references to assigned variables
 * Interpolation and step functions applied to the `$zoomLevel` variable and/or
 feature attributes
 */
@property (nonatomic, null_resettable) NSExpression *fillOutlineColor;
#endif

/**
 The transition affecting any changes to this layer’s `fillOutlineColor` property.

 This property corresponds to the `fill-outline-color-transition` property in the style JSON file format.
*/
@property (nonatomic) MGLTransition fillOutlineColorTransition;

/**
 Name of image in sprite to use for drawing image fills. For seamless patterns,
 image width and height must be a factor of two (2, 4, 8, ..., 512).
 
 You can set this property to an expression containing any of the following:
 
 * Constant string values
 * Predefined functions, including mathematical and string operators
 * Conditional expressions
 * Variable assignments and references to assigned variables
 * Step functions applied to the `$zoomLevel` variable
 
 This property does not support applying interpolation functions to the
 `$zoomLevel` variable or applying interpolation or step functions to feature
 attributes.
 */
@property (nonatomic, null_resettable) NSExpression *fillPattern;

/**
 The transition affecting any changes to this layer’s `fillPattern` property.

 This property corresponds to the `fill-pattern-transition` property in the style JSON file format.
*/
@property (nonatomic) MGLTransition fillPatternTransition;

#if TARGET_OS_IPHONE
/**
 The geometry's offset.
 
 This property is measured in points.
 
 The default value of this property is an expression that evaluates to an
 `NSValue` object containing a `CGVector` struct set to 0 points rightward and 0
 points downward. Set this property to `nil` to reset it to the default value.
 
 This attribute corresponds to the <a
 href="https://www.mapbox.com/mapbox-gl-style-spec/#paint-fill-translate"><code>fill-translate</code></a>
 layout property in the Mapbox Style Specification.
 
 You can set this property to an expression containing any of the following:
 
 * Constant `CGVector` values
 * Predefined functions, including mathematical and string operators
 * Conditional expressions
 * Variable assignments and references to assigned variables
 * Interpolation and step functions applied to the `$zoomLevel` variable
 
 This property does not support applying interpolation or step functions to
 feature attributes.
 */
@property (nonatomic, null_resettable) NSExpression *fillTranslation;
#else
/**
 The geometry's offset.
 
 This property is measured in points.
 
 The default value of this property is an expression that evaluates to an
 `NSValue` object containing a `CGVector` struct set to 0 points rightward and 0
 points upward. Set this property to `nil` to reset it to the default value.
 
 This attribute corresponds to the <a
 href="https://www.mapbox.com/mapbox-gl-style-spec/#paint-fill-translate"><code>fill-translate</code></a>
 layout property in the Mapbox Style Specification.
 
 You can set this property to an expression containing any of the following:
 
 * Constant `CGVector` values
 * Predefined functions, including mathematical and string operators
 * Conditional expressions
 * Variable assignments and references to assigned variables
 * Interpolation and step functions applied to the `$zoomLevel` variable
 
 This property does not support applying interpolation or step functions to
 feature attributes.
 */
@property (nonatomic, null_resettable) NSExpression *fillTranslation;
#endif

/**
 The transition affecting any changes to this layer’s `fillTranslation` property.

 This property corresponds to the `fill-translate-transition` property in the style JSON file format.
*/
@property (nonatomic) MGLTransition fillTranslationTransition;

@property (nonatomic, null_resettable) NSExpression *fillTranslate __attribute__((unavailable("Use fillTranslation instead.")));

/**
 Controls the frame of reference for `fillTranslation`.
 
 The default value of this property is an expression that evaluates to `map`.
 Set this property to `nil` to reset it to the default value.
 
 This property is only applied to the style if `fillTranslation` is non-`nil`.
 Otherwise, it is ignored.
 
 This attribute corresponds to the <a
 href="https://www.mapbox.com/mapbox-gl-style-spec/#paint-fill-translate-anchor"><code>fill-translate-anchor</code></a>
 layout property in the Mapbox Style Specification.
 
 You can set this property to an expression containing any of the following:
 
 * Constant `MGLFillTranslationAnchor` values
 * Any of the following constant string values:
   * `map`: The fill is translated relative to the map.
   * `viewport`: The fill is translated relative to the viewport.
 * Predefined functions, including mathematical and string operators
 * Conditional expressions
 * Variable assignments and references to assigned variables
 * Step functions applied to the `$zoomLevel` variable
 
 This property does not support applying interpolation functions to the
 `$zoomLevel` variable or applying interpolation or step functions to feature
 attributes.
 */
@property (nonatomic, null_resettable) NSExpression *fillTranslationAnchor;

@property (nonatomic, null_resettable) NSExpression *fillTranslateAnchor __attribute__((unavailable("Use fillTranslationAnchor instead.")));

@end

/**
 Methods for wrapping an enumeration value for a style layer attribute in an
 `MGLFillStyleLayer` object and unwrapping its raw value.
 */
@interface NSValue (MGLFillStyleLayerAdditions)

#pragma mark Working with Fill Style Layer Attribute Values

/**
 Creates a new value object containing the given `MGLFillTranslationAnchor` enumeration.

 @param fillTranslationAnchor The value for the new object.
 @return A new value object that contains the enumeration value.
 */
+ (instancetype)valueWithMGLFillTranslationAnchor:(MGLFillTranslationAnchor)fillTranslationAnchor;

/**
 The `MGLFillTranslationAnchor` enumeration representation of the value.
 */
@property (readonly) MGLFillTranslationAnchor MGLFillTranslationAnchorValue;

@end

NS_ASSUME_NONNULL_END