packages/google_maps_flutter/google_maps_flutter/lib/src/google_map.dart - mirrors/plugins - Git at Google

 // Copyright 2013 The Flutter Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.

 part of google_maps_flutter;

 /// Callback method for when the map is ready to be used.
 ///
 /// Pass to [GoogleMap.onMapCreated] to receive a [GoogleMapController] when the
 /// map is created.
 typedef MapCreatedCallback = void Function(GoogleMapController controller);

 // This counter is used to provide a stable "constant" initialization id
 // to the buildView function, so the web implementation can use it as a
 // cache key. This needs to be provided from the outside, because web
 // views seem to re-render much more often that mobile platform views.
 int _nextMapCreationId = 0;

 /// Error thrown when an unknown map object ID is provided to a method.
 class UnknownMapObjectIdError extends Error {
   /// Creates an assertion error with the provided [message].
   UnknownMapObjectIdError(this.objectType, this.objectId, [this.context]);

   /// The name of the map object whose ID is unknown.
   final String objectType;

   /// The unknown maps object ID.
   final MapsObjectId objectId;

   /// The context where the error occurred.
   final String? context;

   String toString() {
     if (context != null) {
       return 'Unknown $objectType ID "${objectId.value}" in $context';
     }
     return 'Unknown $objectType ID "${objectId.value}"';
   }
 }

 /// Android specific settings for [GoogleMap].
 class AndroidGoogleMapsFlutter {
   /// Whether to render [GoogleMap] with a [AndroidViewSurface] to build the Google Maps widget.
   ///
   /// This implementation uses hybrid composition to render the Google Maps
   /// Widget on Android. This comes at the cost of some performance on Android
   /// versions below 10. See
   /// https://flutter.dev/docs/development/platform-integration/platform-views#performance for more
   /// information.
   ///
   /// Defaults to false.
   static bool get useAndroidViewSurface {
     final GoogleMapsFlutterPlatform platform =
         GoogleMapsFlutterPlatform.instance;
     if (platform is MethodChannelGoogleMapsFlutter) {
       return platform.useAndroidViewSurface;
     }
     return false;
   }

   /// Set whether to render [GoogleMap] with a [AndroidViewSurface] to build the Google Maps widget.
   ///
   /// This implementation uses hybrid composition to render the Google Maps
   /// Widget on Android. This comes at the cost of some performance on Android
   /// versions below 10. See
   /// https://flutter.dev/docs/development/platform-integration/platform-views#performance for more
   /// information.
   ///
   /// Defaults to false.
   static set useAndroidViewSurface(bool useAndroidViewSurface) {
     final GoogleMapsFlutterPlatform platform =
         GoogleMapsFlutterPlatform.instance;
     if (platform is MethodChannelGoogleMapsFlutter) {
       platform.useAndroidViewSurface = useAndroidViewSurface;
     }
   }
 }

 /// A widget which displays a map with data obtained from the Google Maps service.
 class GoogleMap extends StatefulWidget {
   /// Creates a widget displaying data from Google Maps services.
   ///
   /// [AssertionError] will be thrown if [initialCameraPosition] is null;
   const GoogleMap({
     Key? key,
     required this.initialCameraPosition,
     this.onMapCreated,
     this.gestureRecognizers = const <Factory<OneSequenceGestureRecognizer>>{},
     this.compassEnabled = true,
     this.mapToolbarEnabled = true,
     this.cameraTargetBounds = CameraTargetBounds.unbounded,
     this.mapType = MapType.normal,
     this.minMaxZoomPreference = MinMaxZoomPreference.unbounded,
     this.rotateGesturesEnabled = true,
     this.scrollGesturesEnabled = true,
     this.zoomControlsEnabled = true,
     this.zoomGesturesEnabled = true,
     this.liteModeEnabled = false,
     this.tiltGesturesEnabled = true,
     this.myLocationEnabled = false,
     this.myLocationButtonEnabled = true,
     this.layoutDirection,

     /// If no padding is specified default padding will be 0.
     this.padding = const EdgeInsets.all(0),
     this.indoorViewEnabled = false,
     this.trafficEnabled = false,
     this.buildingsEnabled = true,
     this.markers = const <Marker>{},
     this.polygons = const <Polygon>{},
     this.polylines = const <Polyline>{},
     this.circles = const <Circle>{},
     this.onCameraMoveStarted,
     this.tileOverlays = const <TileOverlay>{},
     this.onCameraMove,
     this.onCameraIdle,
     this.onTap,
     this.onLongPress,
   })  : assert(initialCameraPosition != null),
         super(key: key);

   /// Callback method for when the map is ready to be used.
   ///
   /// Used to receive a [GoogleMapController] for this [GoogleMap].
   final MapCreatedCallback? onMapCreated;

   /// The initial position of the map's camera.
   final CameraPosition initialCameraPosition;

   /// True if the map should show a compass when rotated.
   final bool compassEnabled;

   /// True if the map should show a toolbar when you interact with the map. Android only.
   final bool mapToolbarEnabled;

   /// Geographical bounding box for the camera target.
   final CameraTargetBounds cameraTargetBounds;

   /// Type of map tiles to be rendered.
   final MapType mapType;

   /// The layout direction to use for the embedded view.
   ///
   /// If this is null, the ambient [Directionality] is used instead. If there is
   /// no ambient [Directionality], [TextDirection.ltr] is used.
   final TextDirection? layoutDirection;

   /// Preferred bounds for the camera zoom level.
   ///
   /// Actual bounds depend on map data and device.
   final MinMaxZoomPreference minMaxZoomPreference;

   /// True if the map view should respond to rotate gestures.
   final bool rotateGesturesEnabled;

   /// True if the map view should respond to scroll gestures.
   final bool scrollGesturesEnabled;

   /// True if the map view should show zoom controls. This includes two buttons
   /// to zoom in and zoom out. The default value is to show zoom controls.
   ///
   /// This is only supported on Android. And this field is silently ignored on iOS.
   final bool zoomControlsEnabled;

   /// True if the map view should respond to zoom gestures.
   final bool zoomGesturesEnabled;

   /// True if the map view should be in lite mode. Android only.
   ///
   /// See https://developers.google.com/maps/documentation/android-sdk/lite#overview_of_lite_mode for more details.
   final bool liteModeEnabled;

   /// True if the map view should respond to tilt gestures.
   final bool tiltGesturesEnabled;

   /// Padding to be set on map. See https://developers.google.com/maps/documentation/android-sdk/map#map_padding for more details.
   final EdgeInsets padding;

   /// Markers to be placed on the map.
   final Set<Marker> markers;

   /// Polygons to be placed on the map.
   final Set<Polygon> polygons;

   /// Polylines to be placed on the map.
   final Set<Polyline> polylines;

   /// Circles to be placed on the map.
   final Set<Circle> circles;

   /// Tile overlays to be placed on the map.
   final Set<TileOverlay> tileOverlays;

   /// Called when the camera starts moving.
   ///
   /// This can be initiated by the following:
   /// 1. Non-gesture animation initiated in response to user actions.
   ///    For example: zoom buttons, my location button, or marker clicks.
   /// 2. Programmatically initiated animation.
   /// 3. Camera motion initiated in response to user gestures on the map.
   ///    For example: pan, tilt, pinch to zoom, or rotate.
   final VoidCallback? onCameraMoveStarted;

   /// Called repeatedly as the camera continues to move after an
   /// onCameraMoveStarted call.
   ///
   /// This may be called as often as once every frame and should
   /// not perform expensive operations.
   final CameraPositionCallback? onCameraMove;

   /// Called when camera movement has ended, there are no pending
   /// animations and the user has stopped interacting with the map.
   final VoidCallback? onCameraIdle;

   /// Called every time a [GoogleMap] is tapped.
   final ArgumentCallback<LatLng>? onTap;

   /// Called every time a [GoogleMap] is long pressed.
   final ArgumentCallback<LatLng>? onLongPress;

   /// True if a "My Location" layer should be shown on the map.
   ///
   /// This layer includes a location indicator at the current device location,
   /// as well as a My Location button.
   /// * The indicator is a small blue dot if the device is stationary, or a
   /// chevron if the device is moving.
   /// * The My Location button animates to focus on the user's current location
   /// if the user's location is currently known.
   ///
   /// Enabling this feature requires adding location permissions to both native
   /// platforms of your app.
   /// * On Android add either
   /// `<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />`
   /// or `<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />`
   /// to your `AndroidManifest.xml` file. `ACCESS_COARSE_LOCATION` returns a
   /// location with an accuracy approximately equivalent to a city block, while
   /// `ACCESS_FINE_LOCATION` returns as precise a location as possible, although
   /// it consumes more battery power. You will also need to request these
   /// permissions during run-time. If they are not granted, the My Location
   /// feature will fail silently.
   /// * On iOS add a `NSLocationWhenInUseUsageDescription` key to your
   /// `Info.plist` file. This will automatically prompt the user for permissions
   /// when the map tries to turn on the My Location layer.
   final bool myLocationEnabled;

   /// Enables or disables the my-location button.
   ///
   /// The my-location button causes the camera to move such that the user's
   /// location is in the center of the map. If the button is enabled, it is
   /// only shown when the my-location layer is enabled.
   ///
   /// By default, the my-location button is enabled (and hence shown when the
   /// my-location layer is enabled).
   ///
   /// See also:
   ///   * [myLocationEnabled] parameter.
   final bool myLocationButtonEnabled;

   /// Enables or disables the indoor view from the map
   final bool indoorViewEnabled;

   /// Enables or disables the traffic layer of the map
   final bool trafficEnabled;

   /// Enables or disables showing 3D buildings where available
   final bool buildingsEnabled;

   /// Which gestures should be consumed by the map.
   ///
   /// It is possible for other gesture recognizers to be competing with the map on pointer
   /// events, e.g if the map is inside a [ListView] the [ListView] will want to handle
   /// vertical drags. The map will claim gestures that are recognized by any of the
   /// recognizers on this list.
   ///
   /// When this set is empty, the map will only handle pointer events for gestures that
   /// were not claimed by any other gesture recognizer.
   final Set<Factory<OneSequenceGestureRecognizer>> gestureRecognizers;

   /// Creates a [State] for this [GoogleMap].
   @override
   State createState() => _GoogleMapState();
 }

 class _GoogleMapState extends State<GoogleMap> {
   final _mapId = _nextMapCreationId++;

   final Completer<GoogleMapController> _controller =
       Completer<GoogleMapController>();

   Map<MarkerId, Marker> _markers = <MarkerId, Marker>{};
   Map<PolygonId, Polygon> _polygons = <PolygonId, Polygon>{};
   Map<PolylineId, Polyline> _polylines = <PolylineId, Polyline>{};
   Map<CircleId, Circle> _circles = <CircleId, Circle>{};
   late _GoogleMapOptions _googleMapOptions;

   @override
   Widget build(BuildContext context) {
     return GoogleMapsFlutterPlatform.instance.buildViewWithTextDirection(
       _mapId,
       onPlatformViewCreated,
       textDirection: widget.layoutDirection ??
           Directionality.maybeOf(context) ??
           TextDirection.ltr,
       initialCameraPosition: widget.initialCameraPosition,
       markers: widget.markers,
       polygons: widget.polygons,
       polylines: widget.polylines,
       circles: widget.circles,
       gestureRecognizers: widget.gestureRecognizers,
       mapOptions: _googleMapOptions.toMap(),
     );
   }

   @override
   void initState() {
     super.initState();
     _googleMapOptions = _GoogleMapOptions.fromWidget(widget);
     _markers = keyByMarkerId(widget.markers);
     _polygons = keyByPolygonId(widget.polygons);
     _polylines = keyByPolylineId(widget.polylines);
     _circles = keyByCircleId(widget.circles);
   }

   @override
   void dispose() async {
     super.dispose();
     GoogleMapController controller = await _controller.future;
     controller.dispose();
   }

   @override
   void didUpdateWidget(GoogleMap oldWidget) {
     super.didUpdateWidget(oldWidget);
     _updateOptions();
     _updateMarkers();
     _updatePolygons();
     _updatePolylines();
     _updateCircles();
     _updateTileOverlays();
   }

   void _updateOptions() async {
     final _GoogleMapOptions newOptions = _GoogleMapOptions.fromWidget(widget);
     final Map<String, dynamic> updates =
         _googleMapOptions.updatesMap(newOptions);
     if (updates.isEmpty) {
       return;
     }
     final GoogleMapController controller = await _controller.future;
     // ignore: unawaited_futures
     controller._updateMapOptions(updates);
     _googleMapOptions = newOptions;
   }

   void _updateMarkers() async {
     final GoogleMapController controller = await _controller.future;
     // ignore: unawaited_futures
     controller._updateMarkers(
         MarkerUpdates.from(_markers.values.toSet(), widget.markers));
     _markers = keyByMarkerId(widget.markers);
   }

   void _updatePolygons() async {
     final GoogleMapController controller = await _controller.future;
     // ignore: unawaited_futures
     controller._updatePolygons(
         PolygonUpdates.from(_polygons.values.toSet(), widget.polygons));
     _polygons = keyByPolygonId(widget.polygons);
   }

   void _updatePolylines() async {
     final GoogleMapController controller = await _controller.future;
     // ignore: unawaited_futures
     controller._updatePolylines(
         PolylineUpdates.from(_polylines.values.toSet(), widget.polylines));
     _polylines = keyByPolylineId(widget.polylines);
   }

   void _updateCircles() async {
     final GoogleMapController controller = await _controller.future;
     // ignore: unawaited_futures
     controller._updateCircles(
         CircleUpdates.from(_circles.values.toSet(), widget.circles));
     _circles = keyByCircleId(widget.circles);
   }

   void _updateTileOverlays() async {
     final GoogleMapController controller = await _controller.future;
     // ignore: unawaited_futures
     controller._updateTileOverlays(widget.tileOverlays);
   }

   Future<void> onPlatformViewCreated(int id) async {
     final GoogleMapController controller = await GoogleMapController.init(
       id,
       widget.initialCameraPosition,
       this,
     );
     _controller.complete(controller);
     _updateTileOverlays();
     final MapCreatedCallback? onMapCreated = widget.onMapCreated;
     if (onMapCreated != null) {
       onMapCreated(controller);
     }
   }

   void onMarkerTap(MarkerId markerId) {
     assert(markerId != null);
     final Marker? marker = _markers[markerId];
     if (marker == null) {
       throw UnknownMapObjectIdError('marker', markerId, 'onTap');
     }
     final VoidCallback? onTap = marker.onTap;
     if (onTap != null) {
       onTap();
     }
   }

   void onMarkerDragStart(MarkerId markerId, LatLng position) {
     assert(markerId != null);
     final Marker? marker = _markers[markerId];
     if (marker == null) {
       throw UnknownMapObjectIdError('marker', markerId, 'onDragStart');
     }
     final ValueChanged<LatLng>? onDragStart = marker.onDragStart;
     if (onDragStart != null) {
       onDragStart(position);
     }
   }

   void onMarkerDrag(MarkerId markerId, LatLng position) {
     assert(markerId != null);
     final Marker? marker = _markers[markerId];
     if (marker == null) {
       throw UnknownMapObjectIdError('marker', markerId, 'onDrag');
     }
     final ValueChanged<LatLng>? onDrag = marker.onDrag;
     if (onDrag != null) {
       onDrag(position);
     }
   }

   void onMarkerDragEnd(MarkerId markerId, LatLng position) {
     assert(markerId != null);
     final Marker? marker = _markers[markerId];
     if (marker == null) {
       throw UnknownMapObjectIdError('marker', markerId, 'onDragEnd');
     }
     final ValueChanged<LatLng>? onDragEnd = marker.onDragEnd;
     if (onDragEnd != null) {
       onDragEnd(position);
     }
   }

   void onPolygonTap(PolygonId polygonId) {
     assert(polygonId != null);
     final Polygon? polygon = _polygons[polygonId];
     if (polygon == null) {
       throw UnknownMapObjectIdError('polygon', polygonId, 'onTap');
     }
     final VoidCallback? onTap = polygon.onTap;
     if (onTap != null) {
       onTap();
     }
   }

   void onPolylineTap(PolylineId polylineId) {
     assert(polylineId != null);
     final Polyline? polyline = _polylines[polylineId];
     if (polyline == null) {
       throw UnknownMapObjectIdError('polyline', polylineId, 'onTap');
     }
     final VoidCallback? onTap = polyline.onTap;
     if (onTap != null) {
       onTap();
     }
   }

   void onCircleTap(CircleId circleId) {
     assert(circleId != null);
     final Circle? circle = _circles[circleId];
     if (circle == null) {
       throw UnknownMapObjectIdError('marker', circleId, 'onTap');
     }
     final VoidCallback? onTap = circle.onTap;
     if (onTap != null) {
       onTap();
     }
   }

   void onInfoWindowTap(MarkerId markerId) {
     assert(markerId != null);
     final Marker? marker = _markers[markerId];
     if (marker == null) {
       throw UnknownMapObjectIdError('marker', markerId, 'InfoWindow onTap');
     }
     final VoidCallback? onTap = marker.infoWindow.onTap;
     if (onTap != null) {
       onTap();
     }
   }

   void onTap(LatLng position) {
     assert(position != null);
     final ArgumentCallback<LatLng>? onTap = widget.onTap;
     if (onTap != null) {
       onTap(position);
     }
   }

   void onLongPress(LatLng position) {
     assert(position != null);
     final ArgumentCallback<LatLng>? onLongPress = widget.onLongPress;
     if (onLongPress != null) {
       onLongPress(position);
     }
   }
 }

 /// Configuration options for the GoogleMaps user interface.
 class _GoogleMapOptions {
   _GoogleMapOptions.fromWidget(GoogleMap map)
       : compassEnabled = map.compassEnabled,
         mapToolbarEnabled = map.mapToolbarEnabled,
         cameraTargetBounds = map.cameraTargetBounds,
         mapType = map.mapType,
         minMaxZoomPreference = map.minMaxZoomPreference,
         rotateGesturesEnabled = map.rotateGesturesEnabled,
         scrollGesturesEnabled = map.scrollGesturesEnabled,
         tiltGesturesEnabled = map.tiltGesturesEnabled,
         trackCameraPosition = map.onCameraMove != null,
         zoomControlsEnabled = map.zoomControlsEnabled,
         zoomGesturesEnabled = map.zoomGesturesEnabled,
         liteModeEnabled = map.liteModeEnabled,
         myLocationEnabled = map.myLocationEnabled,
         myLocationButtonEnabled = map.myLocationButtonEnabled,
         padding = map.padding,
         indoorViewEnabled = map.indoorViewEnabled,
         trafficEnabled = map.trafficEnabled,
         buildingsEnabled = map.buildingsEnabled,
         assert(!map.liteModeEnabled || Platform.isAndroid);

   final bool compassEnabled;

   final bool mapToolbarEnabled;

   final CameraTargetBounds cameraTargetBounds;

   final MapType mapType;

   final MinMaxZoomPreference minMaxZoomPreference;

   final bool rotateGesturesEnabled;

   final bool scrollGesturesEnabled;

   final bool tiltGesturesEnabled;

   final bool trackCameraPosition;

   final bool zoomControlsEnabled;

   final bool zoomGesturesEnabled;

   final bool liteModeEnabled;

   final bool myLocationEnabled;

   final bool myLocationButtonEnabled;

   final EdgeInsets padding;

   final bool indoorViewEnabled;

   final bool trafficEnabled;

   final bool buildingsEnabled;

   Map<String, dynamic> toMap() {
     return <String, dynamic>{
       'compassEnabled': compassEnabled,
       'mapToolbarEnabled': mapToolbarEnabled,
       'cameraTargetBounds': cameraTargetBounds.toJson(),
       'mapType': mapType.index,
       'minMaxZoomPreference': minMaxZoomPreference.toJson(),
       'rotateGesturesEnabled': rotateGesturesEnabled,
       'scrollGesturesEnabled': scrollGesturesEnabled,
       'tiltGesturesEnabled': tiltGesturesEnabled,
       'zoomControlsEnabled': zoomControlsEnabled,
       'zoomGesturesEnabled': zoomGesturesEnabled,
       'liteModeEnabled': liteModeEnabled,
       'trackCameraPosition': trackCameraPosition,
       'myLocationEnabled': myLocationEnabled,
       'myLocationButtonEnabled': myLocationButtonEnabled,
       'padding': <double>[
         padding.top,
         padding.left,
         padding.bottom,
         padding.right,
       ],
       'indoorEnabled': indoorViewEnabled,
       'trafficEnabled': trafficEnabled,
       'buildingsEnabled': buildingsEnabled,
     };
   }

   Map<String, dynamic> updatesMap(_GoogleMapOptions newOptions) {
     final Map<String, dynamic> prevOptionsMap = toMap();

     return newOptions.toMap()
       ..removeWhere(
           (String key, dynamic value) => prevOptionsMap[key] == value);
   }
 }
	// Copyright 2013 The Flutter Authors. All rights reserved.
	// Use of this source code is governed by a BSD-style license that can be
	// found in the LICENSE file.

	part of google_maps_flutter;

	/// Callback method for when the map is ready to be used.
	///
	/// Pass to [GoogleMap.onMapCreated] to receive a [GoogleMapController] when the
	/// map is created.
	typedef MapCreatedCallback = void Function(GoogleMapController controller);

	// This counter is used to provide a stable "constant" initialization id
	// to the buildView function, so the web implementation can use it as a
	// cache key. This needs to be provided from the outside, because web
	// views seem to re-render much more often that mobile platform views.
	int _nextMapCreationId = 0;

	/// Error thrown when an unknown map object ID is provided to a method.
	class UnknownMapObjectIdError extends Error {
	/// Creates an assertion error with the provided [message].
	UnknownMapObjectIdError(this.objectType, this.objectId, [this.context]);

	/// The name of the map object whose ID is unknown.
	final String objectType;

	/// The unknown maps object ID.
	final MapsObjectId objectId;

	/// The context where the error occurred.
	final String? context;

	String toString() {
	if (context != null) {
	return 'Unknown $objectType ID "${objectId.value}" in $context';
	}
	return 'Unknown $objectType ID "${objectId.value}"';
	}
	}

	/// Android specific settings for [GoogleMap].
	class AndroidGoogleMapsFlutter {
	/// Whether to render [GoogleMap] with a [AndroidViewSurface] to build the Google Maps widget.
	///
	/// This implementation uses hybrid composition to render the Google Maps
	/// Widget on Android. This comes at the cost of some performance on Android
	/// versions below 10. See
	/// https://flutter.dev/docs/development/platform-integration/platform-views#performance for more
	/// information.
	///
	/// Defaults to false.
	static bool get useAndroidViewSurface {
	final GoogleMapsFlutterPlatform platform =
	GoogleMapsFlutterPlatform.instance;
	if (platform is MethodChannelGoogleMapsFlutter) {
	return platform.useAndroidViewSurface;
	}
	return false;
	}

	/// Set whether to render [GoogleMap] with a [AndroidViewSurface] to build the Google Maps widget.
	///
	/// This implementation uses hybrid composition to render the Google Maps
	/// Widget on Android. This comes at the cost of some performance on Android
	/// versions below 10. See
	/// https://flutter.dev/docs/development/platform-integration/platform-views#performance for more
	/// information.
	///
	/// Defaults to false.
	static set useAndroidViewSurface(bool useAndroidViewSurface) {
	final GoogleMapsFlutterPlatform platform =
	GoogleMapsFlutterPlatform.instance;
	if (platform is MethodChannelGoogleMapsFlutter) {
	platform.useAndroidViewSurface = useAndroidViewSurface;
	}
	}
	}

	/// A widget which displays a map with data obtained from the Google Maps service.
	class GoogleMap extends StatefulWidget {
	/// Creates a widget displaying data from Google Maps services.
	///
	/// [AssertionError] will be thrown if [initialCameraPosition] is null;
	const GoogleMap({
	Key? key,
	required this.initialCameraPosition,
	this.onMapCreated,
	this.gestureRecognizers = const <Factory<OneSequenceGestureRecognizer>>{},
	this.compassEnabled = true,
	this.mapToolbarEnabled = true,
	this.cameraTargetBounds = CameraTargetBounds.unbounded,
	this.mapType = MapType.normal,
	this.minMaxZoomPreference = MinMaxZoomPreference.unbounded,
	this.rotateGesturesEnabled = true,
	this.scrollGesturesEnabled = true,
	this.zoomControlsEnabled = true,
	this.zoomGesturesEnabled = true,
	this.liteModeEnabled = false,
	this.tiltGesturesEnabled = true,
	this.myLocationEnabled = false,
	this.myLocationButtonEnabled = true,
	this.layoutDirection,

	/// If no padding is specified default padding will be 0.
	this.padding = const EdgeInsets.all(0),
	this.indoorViewEnabled = false,
	this.trafficEnabled = false,
	this.buildingsEnabled = true,
	this.markers = const <Marker>{},
	this.polygons = const <Polygon>{},
	this.polylines = const <Polyline>{},
	this.circles = const <Circle>{},
	this.onCameraMoveStarted,
	this.tileOverlays = const <TileOverlay>{},
	this.onCameraMove,
	this.onCameraIdle,
	this.onTap,
	this.onLongPress,
	}) : assert(initialCameraPosition != null),
	super(key: key);

	/// Callback method for when the map is ready to be used.
	///
	/// Used to receive a [GoogleMapController] for this [GoogleMap].
	final MapCreatedCallback? onMapCreated;

	/// The initial position of the map's camera.
	final CameraPosition initialCameraPosition;

	/// True if the map should show a compass when rotated.
	final bool compassEnabled;

	/// True if the map should show a toolbar when you interact with the map. Android only.
	final bool mapToolbarEnabled;

	/// Geographical bounding box for the camera target.
	final CameraTargetBounds cameraTargetBounds;

	/// Type of map tiles to be rendered.
	final MapType mapType;

	/// The layout direction to use for the embedded view.
	///
	/// If this is null, the ambient [Directionality] is used instead. If there is
	/// no ambient [Directionality], [TextDirection.ltr] is used.
	final TextDirection? layoutDirection;

	/// Preferred bounds for the camera zoom level.
	///
	/// Actual bounds depend on map data and device.
	final MinMaxZoomPreference minMaxZoomPreference;

	/// True if the map view should respond to rotate gestures.
	final bool rotateGesturesEnabled;

	/// True if the map view should respond to scroll gestures.
	final bool scrollGesturesEnabled;

	/// True if the map view should show zoom controls. This includes two buttons
	/// to zoom in and zoom out. The default value is to show zoom controls.
	///
	/// This is only supported on Android. And this field is silently ignored on iOS.
	final bool zoomControlsEnabled;

	/// True if the map view should respond to zoom gestures.
	final bool zoomGesturesEnabled;

	/// True if the map view should be in lite mode. Android only.
	///
	/// See https://developers.google.com/maps/documentation/android-sdk/lite#overview_of_lite_mode for more details.
	final bool liteModeEnabled;

	/// True if the map view should respond to tilt gestures.
	final bool tiltGesturesEnabled;

	/// Padding to be set on map. See https://developers.google.com/maps/documentation/android-sdk/map#map_padding for more details.
	final EdgeInsets padding;

	/// Markers to be placed on the map.
	final Set<Marker> markers;

	/// Polygons to be placed on the map.
	final Set<Polygon> polygons;

	/// Polylines to be placed on the map.
	final Set<Polyline> polylines;

	/// Circles to be placed on the map.
	final Set<Circle> circles;

	/// Tile overlays to be placed on the map.
	final Set<TileOverlay> tileOverlays;

	/// Called when the camera starts moving.
	///
	/// This can be initiated by the following:
	/// 1. Non-gesture animation initiated in response to user actions.
	/// For example: zoom buttons, my location button, or marker clicks.
	/// 2. Programmatically initiated animation.
	/// 3. Camera motion initiated in response to user gestures on the map.
	/// For example: pan, tilt, pinch to zoom, or rotate.
	final VoidCallback? onCameraMoveStarted;

	/// Called repeatedly as the camera continues to move after an
	/// onCameraMoveStarted call.
	///
	/// This may be called as often as once every frame and should
	/// not perform expensive operations.
	final CameraPositionCallback? onCameraMove;

	/// Called when camera movement has ended, there are no pending
	/// animations and the user has stopped interacting with the map.
	final VoidCallback? onCameraIdle;

	/// Called every time a [GoogleMap] is tapped.
	final ArgumentCallback<LatLng>? onTap;

	/// Called every time a [GoogleMap] is long pressed.
	final ArgumentCallback<LatLng>? onLongPress;

	/// True if a "My Location" layer should be shown on the map.
	///
	/// This layer includes a location indicator at the current device location,
	/// as well as a My Location button.
	/// * The indicator is a small blue dot if the device is stationary, or a
	/// chevron if the device is moving.
	/// * The My Location button animates to focus on the user's current location
	/// if the user's location is currently known.
	///
	/// Enabling this feature requires adding location permissions to both native
	/// platforms of your app.
	/// * On Android add either
	/// `<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />`
	/// or `<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />`
	/// to your `AndroidManifest.xml` file. `ACCESS_COARSE_LOCATION` returns a
	/// location with an accuracy approximately equivalent to a city block, while
	/// `ACCESS_FINE_LOCATION` returns as precise a location as possible, although
	/// it consumes more battery power. You will also need to request these
	/// permissions during run-time. If they are not granted, the My Location
	/// feature will fail silently.
	/// * On iOS add a `NSLocationWhenInUseUsageDescription` key to your
	/// `Info.plist` file. This will automatically prompt the user for permissions
	/// when the map tries to turn on the My Location layer.
	final bool myLocationEnabled;

	/// Enables or disables the my-location button.
	///
	/// The my-location button causes the camera to move such that the user's
	/// location is in the center of the map. If the button is enabled, it is
	/// only shown when the my-location layer is enabled.
	///
	/// By default, the my-location button is enabled (and hence shown when the
	/// my-location layer is enabled).
	///
	/// See also:
	/// * [myLocationEnabled] parameter.
	final bool myLocationButtonEnabled;

	/// Enables or disables the indoor view from the map
	final bool indoorViewEnabled;

	/// Enables or disables the traffic layer of the map
	final bool trafficEnabled;

	/// Enables or disables showing 3D buildings where available
	final bool buildingsEnabled;

	/// Which gestures should be consumed by the map.
	///
	/// It is possible for other gesture recognizers to be competing with the map on pointer
	/// events, e.g if the map is inside a [ListView] the [ListView] will want to handle
	/// vertical drags. The map will claim gestures that are recognized by any of the
	/// recognizers on this list.
	///
	/// When this set is empty, the map will only handle pointer events for gestures that
	/// were not claimed by any other gesture recognizer.
	final Set<Factory<OneSequenceGestureRecognizer>> gestureRecognizers;

	/// Creates a [State] for this [GoogleMap].
	@override
	State createState() => _GoogleMapState();
	}

	class _GoogleMapState extends State<GoogleMap> {
	final _mapId = _nextMapCreationId++;

	final Completer<GoogleMapController> _controller =
	Completer<GoogleMapController>();

	Map<MarkerId, Marker> _markers = <MarkerId, Marker>{};
	Map<PolygonId, Polygon> _polygons = <PolygonId, Polygon>{};
	Map<PolylineId, Polyline> _polylines = <PolylineId, Polyline>{};
	Map<CircleId, Circle> _circles = <CircleId, Circle>{};
	late _GoogleMapOptions _googleMapOptions;

	@override
	Widget build(BuildContext context) {
	return GoogleMapsFlutterPlatform.instance.buildViewWithTextDirection(
	_mapId,
	onPlatformViewCreated,
	textDirection: widget.layoutDirection ??
	Directionality.maybeOf(context) ??
	TextDirection.ltr,
	initialCameraPosition: widget.initialCameraPosition,
	markers: widget.markers,
	polygons: widget.polygons,
	polylines: widget.polylines,
	circles: widget.circles,
	gestureRecognizers: widget.gestureRecognizers,
	mapOptions: _googleMapOptions.toMap(),
	);
	}

	@override
	void initState() {
	super.initState();
	_googleMapOptions = _GoogleMapOptions.fromWidget(widget);
	_markers = keyByMarkerId(widget.markers);
	_polygons = keyByPolygonId(widget.polygons);
	_polylines = keyByPolylineId(widget.polylines);
	_circles = keyByCircleId(widget.circles);
	}

	@override
	void dispose() async {
	super.dispose();
	GoogleMapController controller = await _controller.future;
	controller.dispose();
	}

	@override
	void didUpdateWidget(GoogleMap oldWidget) {
	super.didUpdateWidget(oldWidget);
	_updateOptions();
	_updateMarkers();
	_updatePolygons();
	_updatePolylines();
	_updateCircles();
	_updateTileOverlays();
	}

	void _updateOptions() async {
	final _GoogleMapOptions newOptions = _GoogleMapOptions.fromWidget(widget);
	final Map<String, dynamic> updates =
	_googleMapOptions.updatesMap(newOptions);
	if (updates.isEmpty) {
	return;
	}
	final GoogleMapController controller = await _controller.future;
	// ignore: unawaited_futures
	controller._updateMapOptions(updates);
	_googleMapOptions = newOptions;
	}

	void _updateMarkers() async {
	final GoogleMapController controller = await _controller.future;
	// ignore: unawaited_futures
	controller._updateMarkers(
	MarkerUpdates.from(_markers.values.toSet(), widget.markers));
	_markers = keyByMarkerId(widget.markers);
	}

	void _updatePolygons() async {
	final GoogleMapController controller = await _controller.future;
	// ignore: unawaited_futures
	controller._updatePolygons(
	PolygonUpdates.from(_polygons.values.toSet(), widget.polygons));
	_polygons = keyByPolygonId(widget.polygons);
	}

	void _updatePolylines() async {
	final GoogleMapController controller = await _controller.future;
	// ignore: unawaited_futures
	controller._updatePolylines(
	PolylineUpdates.from(_polylines.values.toSet(), widget.polylines));
	_polylines = keyByPolylineId(widget.polylines);
	}

	void _updateCircles() async {
	final GoogleMapController controller = await _controller.future;
	// ignore: unawaited_futures
	controller._updateCircles(
	CircleUpdates.from(_circles.values.toSet(), widget.circles));
	_circles = keyByCircleId(widget.circles);
	}

	void _updateTileOverlays() async {
	final GoogleMapController controller = await _controller.future;
	// ignore: unawaited_futures
	controller._updateTileOverlays(widget.tileOverlays);
	}

	Future<void> onPlatformViewCreated(int id) async {
	final GoogleMapController controller = await GoogleMapController.init(
	id,
	widget.initialCameraPosition,
	this,
	);
	_controller.complete(controller);
	_updateTileOverlays();
	final MapCreatedCallback? onMapCreated = widget.onMapCreated;
	if (onMapCreated != null) {
	onMapCreated(controller);
	}
	}

	void onMarkerTap(MarkerId markerId) {
	assert(markerId != null);
	final Marker? marker = _markers[markerId];
	if (marker == null) {
	throw UnknownMapObjectIdError('marker', markerId, 'onTap');
	}
	final VoidCallback? onTap = marker.onTap;
	if (onTap != null) {
	onTap();
	}
	}

	void onMarkerDragStart(MarkerId markerId, LatLng position) {
	assert(markerId != null);
	final Marker? marker = _markers[markerId];
	if (marker == null) {
	throw UnknownMapObjectIdError('marker', markerId, 'onDragStart');
	}
	final ValueChanged<LatLng>? onDragStart = marker.onDragStart;
	if (onDragStart != null) {
	onDragStart(position);
	}
	}

	void onMarkerDrag(MarkerId markerId, LatLng position) {
	assert(markerId != null);
	final Marker? marker = _markers[markerId];
	if (marker == null) {
	throw UnknownMapObjectIdError('marker', markerId, 'onDrag');
	}
	final ValueChanged<LatLng>? onDrag = marker.onDrag;
	if (onDrag != null) {
	onDrag(position);
	}
	}

	void onMarkerDragEnd(MarkerId markerId, LatLng position) {
	assert(markerId != null);
	final Marker? marker = _markers[markerId];
	if (marker == null) {
	throw UnknownMapObjectIdError('marker', markerId, 'onDragEnd');
	}
	final ValueChanged<LatLng>? onDragEnd = marker.onDragEnd;
	if (onDragEnd != null) {
	onDragEnd(position);
	}
	}

	void onPolygonTap(PolygonId polygonId) {
	assert(polygonId != null);
	final Polygon? polygon = _polygons[polygonId];
	if (polygon == null) {
	throw UnknownMapObjectIdError('polygon', polygonId, 'onTap');
	}
	final VoidCallback? onTap = polygon.onTap;
	if (onTap != null) {
	onTap();
	}
	}

	void onPolylineTap(PolylineId polylineId) {
	assert(polylineId != null);
	final Polyline? polyline = _polylines[polylineId];
	if (polyline == null) {
	throw UnknownMapObjectIdError('polyline', polylineId, 'onTap');
	}
	final VoidCallback? onTap = polyline.onTap;
	if (onTap != null) {
	onTap();
	}
	}

	void onCircleTap(CircleId circleId) {
	assert(circleId != null);
	final Circle? circle = _circles[circleId];
	if (circle == null) {
	throw UnknownMapObjectIdError('marker', circleId, 'onTap');
	}
	final VoidCallback? onTap = circle.onTap;
	if (onTap != null) {
	onTap();
	}
	}

	void onInfoWindowTap(MarkerId markerId) {
	assert(markerId != null);
	final Marker? marker = _markers[markerId];
	if (marker == null) {
	throw UnknownMapObjectIdError('marker', markerId, 'InfoWindow onTap');
	}
	final VoidCallback? onTap = marker.infoWindow.onTap;
	if (onTap != null) {
	onTap();
	}
	}

	void onTap(LatLng position) {
	assert(position != null);
	final ArgumentCallback<LatLng>? onTap = widget.onTap;
	if (onTap != null) {
	onTap(position);
	}
	}

	void onLongPress(LatLng position) {
	assert(position != null);
	final ArgumentCallback<LatLng>? onLongPress = widget.onLongPress;
	if (onLongPress != null) {
	onLongPress(position);
	}
	}
	}

	/// Configuration options for the GoogleMaps user interface.
	class _GoogleMapOptions {
	_GoogleMapOptions.fromWidget(GoogleMap map)
	: compassEnabled = map.compassEnabled,
	mapToolbarEnabled = map.mapToolbarEnabled,
	cameraTargetBounds = map.cameraTargetBounds,
	mapType = map.mapType,
	minMaxZoomPreference = map.minMaxZoomPreference,
	rotateGesturesEnabled = map.rotateGesturesEnabled,
	scrollGesturesEnabled = map.scrollGesturesEnabled,
	tiltGesturesEnabled = map.tiltGesturesEnabled,
	trackCameraPosition = map.onCameraMove != null,
	zoomControlsEnabled = map.zoomControlsEnabled,
	zoomGesturesEnabled = map.zoomGesturesEnabled,
	liteModeEnabled = map.liteModeEnabled,
	myLocationEnabled = map.myLocationEnabled,
	myLocationButtonEnabled = map.myLocationButtonEnabled,
	padding = map.padding,
	indoorViewEnabled = map.indoorViewEnabled,
	trafficEnabled = map.trafficEnabled,
	buildingsEnabled = map.buildingsEnabled,
	assert(!map.liteModeEnabled \|\| Platform.isAndroid);

	final bool compassEnabled;

	final bool mapToolbarEnabled;

	final CameraTargetBounds cameraTargetBounds;

	final MapType mapType;

	final MinMaxZoomPreference minMaxZoomPreference;

	final bool rotateGesturesEnabled;

	final bool scrollGesturesEnabled;

	final bool tiltGesturesEnabled;

	final bool trackCameraPosition;

	final bool zoomControlsEnabled;

	final bool zoomGesturesEnabled;

	final bool liteModeEnabled;

	final bool myLocationEnabled;

	final bool myLocationButtonEnabled;

	final EdgeInsets padding;

	final bool indoorViewEnabled;

	final bool trafficEnabled;

	final bool buildingsEnabled;

	Map<String, dynamic> toMap() {
	return <String, dynamic>{
	'compassEnabled': compassEnabled,
	'mapToolbarEnabled': mapToolbarEnabled,
	'cameraTargetBounds': cameraTargetBounds.toJson(),
	'mapType': mapType.index,
	'minMaxZoomPreference': minMaxZoomPreference.toJson(),
	'rotateGesturesEnabled': rotateGesturesEnabled,
	'scrollGesturesEnabled': scrollGesturesEnabled,
	'tiltGesturesEnabled': tiltGesturesEnabled,
	'zoomControlsEnabled': zoomControlsEnabled,
	'zoomGesturesEnabled': zoomGesturesEnabled,
	'liteModeEnabled': liteModeEnabled,
	'trackCameraPosition': trackCameraPosition,
	'myLocationEnabled': myLocationEnabled,
	'myLocationButtonEnabled': myLocationButtonEnabled,
	'padding': <double>[
	padding.top,
	padding.left,
	padding.bottom,
	padding.right,
	],
	'indoorEnabled': indoorViewEnabled,
	'trafficEnabled': trafficEnabled,
	'buildingsEnabled': buildingsEnabled,
	};
	}

	Map<String, dynamic> updatesMap(_GoogleMapOptions newOptions) {
	final Map<String, dynamic> prevOptionsMap = toMap();

	return newOptions.toMap()
	..removeWhere(
	(String key, dynamic value) => prevOptionsMap[key] == value);
	}
	}