MapLineLayer class Null safety

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

  late List<Model> _lines;
  late MapZoomPanBehavior _zoomPanBehavior;
  late MapShapeSource _mapSource;

  @override
  void initState() {
    _zoomPanBehavior = MapZoomPanBehavior(
      focalLatLng: MapLatLng(40.7128, -95.3698),
      zoomLevel: 3,
    );

    _mapSource = MapShapeSource.asset(
      "assets/world_map.json",
      shapeDataField: "continent",
    );

    _lines = <Model>[
      Model(MapLatLng(40.7128, -74.0060), MapLatLng(44.9778, -93.2650)),
      Model(MapLatLng(40.7128, -74.0060), MapLatLng(33.4484, -112.0740)),
      Model(MapLatLng(40.7128, -74.0060), MapLatLng(29.7604, -95.3698)),
      Model(MapLatLng(40.7128, -74.0060), MapLatLng(39.7392, -104.9903)),
    ];

    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: SfMaps(
        layers: [
          MapShapeLayer(
            source: _mapSource,
            zoomPanBehavior: _zoomPanBehavior,
            sublayers: [
              MapLineLayer(
                lines: List<MapLine>.generate(
                  _lines.length,
                  (int index) {
                    return MapLine(
                      from: _lines[index].from,
                      to: _lines[index].to,
                    );
                  },
                ).toSet(),
              ),
            ],
          ),
        ],
      ),
    );
  }

class Model {
  Model(this.from, this.to);

  MapLatLng from;
  MapLatLng to;
}

See also:

Inheritance

Constructors

MapLineLayer({Key? key, required Set<MapLine> lines, Animation<double>? animation, Color? color, double width = 2, StrokeCap strokeCap = StrokeCap.butt, List<double> dashArray = const <double>[0, 0], IndexedWidgetBuilder? tooltipBuilder})
Creates the MapLineLayer.
const

Properties

animation Animation<double>?
Animation for the lines in MapLineLayer. [...]
final
color Color?
The color of all the lines. [...]
final
dashArray List<double>
Apply same dash pattern for all the MapLine in the lines collection. [...]
final
hashCode int
The hash code for this object. [...]
@nonVirtual, read-only, inherited
key Key?
Controls how one widget replaces another widget in the tree. [...]
final, inherited
lines Set<MapLine>
A collection of MapLine. [...]
final
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited
strokeCap StrokeCap
Applies stroke cap to the start and end of all lines. You can set StrokeCap.round to get a semi-circle or StrokeCap.square to get a semi-square at the edges of the line. [...]
final
tooltipBuilder IndexedWidgetBuilder?
Returns a widget for the map line tooltip based on the index. [...]
final, inherited
width double
The width of all the lines. [...]
final

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. [...]
@protected, inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node. [...]
override
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent 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. [...]
@nonVirtual, inherited