MapPolygonLayer class

A sublayer which renders group of MapPolygon on MapShapeLayer and MapTileLayer.

 late MapZoomPanBehavior _zoomPanBehavior;
 late List<MapLatLng> _polygon;
 late MapShapeSource _mapSource;

 @override
 void initState() {
   _polygon = <MapLatLng>[
     MapLatLng(38.8026, -116.4194),
     MapLatLng(46.8797, -110.3626),
     MapLatLng(41.8780, -93.0977),
   ];

   _mapSource = MapShapeSource.asset(
     'assets/usa.json',
     shapeDataField: 'name',
   );

   _zoomPanBehavior = MapZoomPanBehavior();
   super.initState();
 }

 @override
 Widget build(BuildContext context) {
   return Scaffold(
     appBar: AppBar(title: Text('Polygon shape')),
     body: SfMaps(layers: [
       MapShapeLayer(
         source: _mapSource,
         sublayers: [
           MapPolygonLayer(
             polygons: List<MapPolygon>.generate(
               1,
               (int index) {
                 return MapPolygon(
                   points: _polygon,
                 );
               },
             ).toSet(),
           ),
         ],
         zoomPanBehavior: _zoomPanBehavior,
       ),
     ]),
   );
 }

See also:
* `[MapPolygonLayer.inverted]`, named constructor, for adding inverted
polygon shape.
Inheritance

Constructors

MapPolygonLayer({Key? key, required Set<MapPolygon> polygons, Color? color, double strokeWidth = 1, Color? strokeColor, IndexedWidgetBuilder? tooltipBuilder})
Creates the MapPolygonLayer.
const
MapPolygonLayer.inverted({Key? key, required Set<MapPolygon> polygons, double strokeWidth = 1, Color? color, Color? strokeColor, IndexedWidgetBuilder? tooltipBuilder})
Creates the inverted color polygon shape.
const

Properties

color Color?
The fill color of all the MapPolygon.
final
hashCode int
The hash code for this object.
no setterinherited
key Key?
Controls how one widget replaces another widget in the tree.
finalinherited
polygons Set<MapPolygon>
A collection of MapPolygon.
final
runtimeType Type
A representation of the runtime type of the object.
no setterinherited
strokeColor Color?
The stroke color of all the MapPolygon.
final
strokeWidth double
The stroke width of all the MapPolygon.
final
tooltipBuilder IndexedWidgetBuilder?
Returns a widget for the map line tooltip based on the index.
finalinherited

Methods

build(BuildContext context) Widget
Describes the part of the user interface represented by this widget.
override
createElement() StatelessElement
Creates a StatelessElement to manage this widget's location in the tree.
inherited
debugDescribeChildren() List<DiagnosticsNode>
Returns a list of DiagnosticsNode objects describing this node's children.
inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node.
override
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) DiagnosticsNode
Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep.
inherited
toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) String
A string representation of this object.
inherited
toStringDeep({String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug}) String
Returns a string representation of this node and its descendants.
inherited
toStringShallow({String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) String
Returns a one-line detailed description of the object.
inherited
toStringShort() String
A short, textual description of this widget.
inherited

Operators

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