GeoJsonSource class - mapbox_maps_flutter library

Constructors

GeoJsonSource({required String id, String? data = "", double? maxzoom, String? attribution, double? buffer, double? tolerance, bool? cluster, double? clusterRadius, double? clusterMaxZoom, double? clusterMinPoints, Map<String, dynamic>? clusterProperties, bool? lineMetrics, bool? generateId, double? prefetchZoomDelta, TileCacheBudget? tileCacheBudget})

Properties

attribution → Future<String?>: Contains an attribution to be displayed when the map is shown to a user.
no setter
buffer → Future<double?>: Size of the tile buffer on each side. A value of 0 produces no buffer. A value of 512 produces a buffer as wide as the tile itself. Larger values produce fewer rendering artifacts near tile edges and slower performance. Default value: 128. Value range: 0, 512
no setter
cluster → Future<bool?>: If the data is a collection of point features, setting this to true clusters the points by radius into groups. Cluster groups become new Point features in the source with additional properties:
no setter
clusterMaxZoom → Future<double?>: Max zoom on which to cluster points if clustering is enabled. Defaults to one zoom less than maxzoom (so that last zoom features are not clustered). Clusters are re-evaluated at integer zoom levels so setting clusterMaxZoom to 14 means the clusters will be displayed until z15.
no setter
clusterMinPoints → Future<double?>: Minimum number of points necessary to form a cluster if clustering is enabled. Defaults to 2.
no setter
clusterProperties → Future<Map<String, dynamic>?>: An object defining custom properties on the generated clusters if clustering is enabled, aggregating values from clustered points. Has the form {"property_name": [operator, map_expression]}. operator is any expression function that accepts at least 2 operands (e.g. "+" or "max") — it accumulates the property value from clusters/points the cluster contains; map_expression produces the value of a single point.
no setter
clusterRadius → Future<double?>: Radius of each cluster if clustering is enabled. A value of 512 indicates a radius equal to the width of a tile. Default value: 50. Minimum value: 0.
no setter
data → Future<String?>: A URL to a GeoJSON file, or inline GeoJSON.
no setter
generateId → Future<bool?>: Whether to generate ids for the GeoJSON features. When enabled, the feature.id property will be auto assigned based on its index in the features array, over-writing any previous values. Default value: false.
no setter
hashCode → int: The hash code for this object.
no setterinherited
id ↔ String: The ID of the Source.
getter/setter pairinherited
lineMetrics → Future<bool?>: Whether to calculate line distance metrics. This is required for line layers that specify line-gradient values. Default value: false.
no setter
maxzoom → Future<double?>: Maximum zoom level at which to create vector tiles (higher means greater detail at high zoom levels). Default value: 18.
no setter
prefetchZoomDelta → Future<double?>: When loading a map, if PrefetchZoomDelta is set to any number greater than 0, the map will first request a tile at zoom level lower than zoom - delta, but so that the zoom level is multiple of delta, in an attempt to display a full map at lower resolution as quick as possible. It will get clamped at the tile source minimum zoom. Default value: 4.
no setter
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
tileCacheBudget → Future<TileCacheBudget?>: This property defines a source-specific resource budget, either in tile units or in megabytes. Whenever the tile cache goes over the defined limit, the least recently used tile will be evicted from the in-memory cache. Note that the current implementation does not take into account resources allocated by the visible tiles.
no setter
tolerance → Future<double?>: Douglas-Peucker simplification tolerance (higher means simpler geometries and faster performance). Default value: 0.375.
no setter

Methods

bind(StyleManager style) → void: inherited
getType() → String: Get the type of the current source as a String.
override
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
toString() → String: A string representation of this object.
inherited
updateGeoJSON(String geoJson) → Future<void>?: Update this GeojsonSource with a URL to a GeoJSON file, or inline GeoJSON.

Operators

operator ==(Object other) → bool: The equality operator.
inherited