Create abstraction and move gmap backend for map browser to package

app/lib/app_init.dart

@@ -75,7 +75,7 @@ Future<void> init(InitIsolateType isolateType) async {
   }
   await _initDiContainer(isolateType);
   _initVisibilityDetector();
-  GpsMap.init();
+  initGpsMap();
   // init session storage
   SessionStorage();
 

app/lib/controller/pref_controller.dart

@@ -161,10 +161,12 @@ class PrefController {
         value: value,
       );
 
-  Future<bool> setMapBrowserPrevPosition(MapCoord value) => _set<MapCoord?>(
+  Future<bool> setMapBrowserPrevPosition(MapCoord? value) =>
+      _setOrRemove<MapCoord>(
         controller: _mapBrowserPrevPositionController,
         setter: (pref, value) => pref.setMapBrowserPrevPosition(
-            jsonEncode([value!.latitude, value.longitude])),
+            jsonEncode([value.latitude, value.longitude])),
+        remover: (pref) => pref.setMapBrowserPrevPosition(null),
         value: value,
       );
 
@@ -270,9 +272,9 @@ class PrefController {
       BehaviorSubject.seeded(_c.pref.isDontShowVideoPreviewHintOr(false));
   @npSubjectAccessor
   late final _mapBrowserPrevPositionController = BehaviorSubject.seeded(_c.pref
-          .getMapBrowserPrevPosition()
-          ?.let(tryJsonDecode)
-          ?.let(_tryMapCoordFromJson));
+      .getMapBrowserPrevPosition()
+      ?.let(tryJsonDecode)
+      ?.let(_tryMapCoordFromJson));
 }
 
 @npSubjectAccessor

app/lib/controller/pref_controller/util.dart

@@ -91,8 +91,13 @@ extension on Pref {
 
   String? getMapBrowserPrevPosition() =>
       provider.getString(PrefKey.mapBrowserPrevPosition);
-  Future<bool> setMapBrowserPrevPosition(String value) =>
-      provider.setString(PrefKey.mapBrowserPrevPosition, value);
+  Future<bool> setMapBrowserPrevPosition(String? value) {
+    if (value == null) {
+      return provider.remove(PrefKey.mapBrowserPrevPosition);
+    } else {
+      return provider.setString(PrefKey.mapBrowserPrevPosition, value);
+    }
+  }
 }
 
 MapCoord? _tryMapCoordFromJson(dynamic json) {

app/lib/stream_extension.dart

@@ -28,4 +28,10 @@ extension StreamExtension<T> on Stream<T> {
 
   Stream<T> distinctBy<U>(U Function(T element) keyOf) =>
       distinct((previous, next) => keyOf(previous) == keyOf(next));
+
+  /// By default the first event will always pass through the distinct check,
+  /// which may not always make sense. In this variant, the first event will be
+  /// absorbed
+  Stream<T> distinctByIgnoreFirst<U>(U Function(T element) keyOf) =>
+      distinct((previous, next) => keyOf(previous) == keyOf(next)).skip(1);
 }

app/lib/widget/map_browser.dart

@@ -6,7 +6,6 @@ import 'package:copy_with/copy_with.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
-import 'package:google_maps_cluster_manager/google_maps_cluster_manager.dart';
 import 'package:google_maps_flutter/google_maps_flutter.dart';
 import 'package:intl/intl.dart' as intl;
 import 'package:kiwi/kiwi.dart';

app/lib/widget/map_browser.g.dart

@@ -16,7 +16,6 @@ abstract class $_StateCopyWithWorker {
   _State call(
       {List<_DataPoint>? data,
       MapCoord? initialPoint,
-      Set<Marker>? markers,
       bool? isShowDataRangeControlPanel,
       _DateRangeType? dateRangeType,
       DateRange? localDateRange,
@@ -30,7 +29,6 @@ class _$_StateCopyWithWorkerImpl implements $_StateCopyWithWorker {
   _State call(
       {dynamic data,
       dynamic initialPoint = copyWithNull,
-      dynamic markers,
       dynamic isShowDataRangeControlPanel,
       dynamic dateRangeType,
       dynamic localDateRange,
@@ -40,7 +38,6 @@ class _$_StateCopyWithWorkerImpl implements $_StateCopyWithWorker {
         initialPoint: initialPoint == copyWithNull
             ? that.initialPoint
             : initialPoint as MapCoord?,
-        markers: markers as Set<Marker>? ?? that.markers,
         isShowDataRangeControlPanel: isShowDataRangeControlPanel as bool? ??
             that.isShowDataRangeControlPanel,
         dateRangeType: dateRangeType as _DateRangeType? ?? that.dateRangeType,
@@ -74,7 +71,7 @@ extension _$_BlocNpLog on _Bloc {
 extension _$_StateToString on _State {
   String _$toString() {
     // ignore: unnecessary_string_interpolations
-    return "_State {data: [length: ${data.length}], initialPoint: $initialPoint, markers: {length: ${markers.length}}, isShowDataRangeControlPanel: $isShowDataRangeControlPanel, dateRangeType: ${dateRangeType.name}, localDateRange: $localDateRange, error: $error}";
+    return "_State {data: [length: ${data.length}], initialPoint: $initialPoint, isShowDataRangeControlPanel: $isShowDataRangeControlPanel, dateRangeType: ${dateRangeType.name}, localDateRange: $localDateRange, error: $error}";
   }
 }
 
@@ -85,13 +82,6 @@ extension _$_LoadDataToString on _LoadData {
   }
 }
 
-extension _$_SetMarkersToString on _SetMarkers {
-  String _$toString() {
-    // ignore: unnecessary_string_interpolations
-    return "_SetMarkers {markers: {length: ${markers.length}}}";
-  }
-}
-
 extension _$_OpenDataRangeControlPanelToString on _OpenDataRangeControlPanel {
   String _$toString() {
     // ignore: unnecessary_string_interpolations

app/lib/widget/map_browser/bloc.dart

@@ -13,15 +13,15 @@ class _Bloc extends Bloc<_Event, _State>
               _calcDateRange(clock.now().toDate(), _DateRangeType.thisMonth),
         )) {
     on<_LoadData>(_onLoadData);
-    on<_SetMarkers>(_onSetMarkers);
     on<_OpenDataRangeControlPanel>(_onOpenDataRangeControlPanel);
     on<_CloseControlPanel>(_onCloseControlPanel);
     on<_SetDateRangeType>(_onSetDateRangeType);
     on<_SetLocalDateRange>(_onSetDateRange);
     on<_SetError>(_onSetError);
 
-    _subscriptions
-        .add(stream.distinctBy((state) => state.localDateRange).listen((state) {
+    _subscriptions.add(stream
+        .distinctByIgnoreFirst((state) => state.localDateRange)
+        .listen((state) {
       add(const _LoadData());
     }));
   }
@@ -77,11 +77,6 @@ class _Bloc extends Bloc<_Event, _State>
     }
   }
 
-  void _onSetMarkers(_SetMarkers ev, Emitter<_State> emit) {
-    _log.info(ev);
-    emit(state.copyWith(markers: ev.markers));
-  }
-
   void _onOpenDataRangeControlPanel(
       _OpenDataRangeControlPanel ev, Emitter<_State> emit) {
     _log.info(ev);

app/lib/widget/map_browser/state_event.dart

@@ -6,7 +6,6 @@ class _State {
   const _State({
     required this.data,
     this.initialPoint,
-    required this.markers,
     required this.isShowDataRangeControlPanel,
     required this.dateRangeType,
     required this.localDateRange,
@@ -19,7 +18,6 @@ class _State {
   }) {
     return _State(
       data: const [],
-      markers: const {},
       isShowDataRangeControlPanel: false,
       dateRangeType: dateRangeType,
       localDateRange: localDateRange,
@@ -31,7 +29,6 @@ class _State {
 
   final List<_DataPoint> data;
   final MapCoord? initialPoint;
-  final Set<Marker> markers;
 
   final bool isShowDataRangeControlPanel;
   final _DateRangeType dateRangeType;
@@ -52,16 +49,6 @@ class _LoadData implements _Event {
   String toString() => _$toString();
 }
 
-@toString
-class _SetMarkers implements _Event {
-  const _SetMarkers(this.markers);
-
-  @override
-  String toString() => _$toString();
-
-  final Set<Marker> markers;
-}
-
 @toString
 class _OpenDataRangeControlPanel implements _Event {
   const _OpenDataRangeControlPanel();

app/lib/widget/map_browser/type.dart

@@ -1,25 +1,155 @@
 part of '../map_browser.dart';
 
-class _DataPoint implements ClusterItem {
+class _DataPoint extends DataPoint {
   const _DataPoint({
-    required this.location,
+    required super.position,
     required this.fileId,
   });
 
   factory _DataPoint.fromImageLatLng(ImageLatLng src) => _DataPoint(
-        location: LatLng(src.latitude, src.longitude),
+        position: MapCoord(src.latitude, src.longitude),
         fileId: src.fileId,
       );
 
-  @override
-  String get geohash =>
-      Geohash.encode(location, codeLength: ClusterManager.precision);
-
-  @override
-  final LatLng location;
   final int fileId;
 }
 
+class _GoogleMarkerBuilder {
+  _GoogleMarkerBuilder(this.context);
+
+  Future<BitmapDescriptor> build(List<DataPoint> dataPoints) {
+    return _getClusterBitmap(
+      _getMarkerSize(dataPoints.length),
+      text: _getMarkerCountString(dataPoints.length),
+      color: _getMarkerColor(dataPoints.length),
+    );
+  }
+
+  String _getMarkerCountString(int count) {
+    switch (count) {
+      case >= 10000:
+        return "10000+";
+      case >= 1000:
+        return "${count ~/ 1000 * 1000}+";
+      case >= 100:
+        return "${count ~/ 100 * 100}+";
+      case >= 10:
+        return "${count ~/ 10 * 10}+";
+      default:
+        return count.toString();
+    }
+  }
+
+  Color _getMarkerColor(int count) {
+    const step = 1 / 4;
+    final double r;
+    switch (count) {
+      case >= 10000:
+        r = 1;
+      case >= 1000:
+        r = (count ~/ 1000) / 10 * step + step * 3;
+      case >= 100:
+        r = (count ~/ 100) / 10 * step + step * 2;
+      case >= 10:
+        r = (count ~/ 10) / 10 * step + step;
+      default:
+        r = (count / 10) * step;
+    }
+    if (Theme.of(context).brightness == Brightness.light) {
+      return HSLColor.fromAHSL(
+        1,
+        _colorHsl.hue,
+        r * .7 + .3,
+        (_colorHsl.lightness - (.1 - r * .1)).clamp(0, 1),
+      ).toColor();
+    } else {
+      return HSLColor.fromAHSL(
+        1,
+        _colorHsl.hue,
+        r * .6 + .4,
+        (_colorHsl.lightness - (.1 - r * .1)).clamp(0, 1),
+      ).toColor();
+    }
+  }
+
+  int _getMarkerSize(int count) {
+    const step = 1 / 4;
+    final double r;
+    switch (count) {
+      case >= 10000:
+        r = 1;
+      case >= 1000:
+        r = (count ~/ 1000) / 10 * step + step * 3;
+      case >= 100:
+        r = (count ~/ 100) / 10 * step + step * 2;
+      case >= 10:
+        r = (count ~/ 10) / 10 * step + step;
+      default:
+        r = (count / 10) * step;
+    }
+    return (r * 85).toInt() + 85;
+  }
+
+  Future<BitmapDescriptor> _getClusterBitmap(
+    int size, {
+    String? text,
+    required Color color,
+  }) async {
+    final PictureRecorder pictureRecorder = PictureRecorder();
+    final Canvas canvas = Canvas(pictureRecorder);
+    final fillPaint = Paint()..color = color;
+    final outlinePaint = Paint()
+      ..color = Theme.of(context).brightness == Brightness.light
+          ? Colors.black.withOpacity(.28)
+          : Colors.white.withOpacity(.6)
+      ..strokeWidth = size / 28
+      ..style = PaintingStyle.stroke;
+    const shadowPadding = 6.0;
+    const shadowPaddingHalf = shadowPadding / 2;
+    final shadowPath = Path()
+      ..addOval(
+          Rect.fromLTWH(0, 0, size - shadowPadding, size - shadowPadding));
+    canvas.drawShadow(shadowPath, Colors.black, 1, false);
+    canvas.drawCircle(
+      Offset(size / 2 - shadowPaddingHalf, size / 2 - shadowPaddingHalf),
+      size / 2 - shadowPaddingHalf,
+      fillPaint,
+    );
+    canvas.drawCircle(
+      Offset(size / 2 - shadowPaddingHalf, size / 2 - shadowPaddingHalf),
+      size / 2 - shadowPaddingHalf - (size / 28 / 2),
+      outlinePaint,
+    );
+    if (text != null) {
+      TextPainter painter = TextPainter(textDirection: TextDirection.ltr);
+      painter.text = TextSpan(
+        text: text,
+        style: TextStyle(
+          fontSize: size / 3 - ((text.length / 6) * (size * 0.1)),
+          color: Theme.of(context).colorScheme.onPrimaryContainer,
+          fontWeight: FontWeight.normal,
+        ),
+      );
+      painter.layout();
+      painter.paint(
+        canvas,
+        Offset(
+          size / 2 - painter.width / 2 - shadowPaddingHalf,
+          size / 2 - painter.height / 2 - shadowPaddingHalf,
+        ),
+      );
+    }
+    final img = await pictureRecorder.endRecording().toImage(size, size);
+    final data = await img.toByteData(format: ImageByteFormat.png) as ByteData;
+    return BitmapDescriptor.fromBytes(data.buffer.asUint8List());
+  }
+
+  final BuildContext context;
+
+  late final _colorHsl =
+      HSLColor.fromColor(Theme.of(context).colorScheme.primaryContainer);
+}
+
 enum _DateRangeType {
   thisMonth,
   prevMonth,
@@ -40,7 +170,3 @@ enum _DateRangeType {
     }
   }
 }
-
-extension on MapCoord {
-  LatLng toLatLng() => LatLng(latitude, longitude);
-}

app/lib/widget/map_browser/view.dart

@@ -12,212 +12,60 @@ class _MapViewState extends State<_MapView> {
   Widget build(BuildContext context) {
     return MultiBlocListener(
       listeners: [
-        _BlocListenerT<List<_DataPoint>>(
-          selector: (state) => state.data,
-          listener: (context, data) {
-            _clusterManager.setItems(data);
-          },
-        ),
         _BlocListenerT<MapCoord?>(
           selector: (state) => state.initialPoint,
           listener: (context, initialPoint) {
             if (initialPoint != null) {
-              _mapController?.animateCamera(
-                  CameraUpdate.newLatLngZoom(initialPoint.toLatLng(), 10));
+              _controller?.setPosition(initialPoint);
             }
           },
         ),
       ],
       child: _BlocBuilder(
-        buildWhen: (previous, current) => previous.markers != current.markers,
-        builder: (context, state) => GoogleMap(
-          mapType: MapType.normal,
-          initialCameraPosition: context
-                  .read<PrefController>()
-                  .mapBrowserPrevPositionValue
-                  ?.let(
-                      (p) => CameraPosition(target: p.toLatLng(), zoom: 10)) ??
-              const CameraPosition(target: LatLng(0, 0)),
-          markers: state.markers,
-          onMapCreated: (controller) {
-            _clusterManager.setMapId(controller.mapId);
-            _mapController = controller;
-            if (Theme.of(context).brightness == Brightness.dark) {
-              controller.setMapStyle(_mapStyleNight);
-            }
-            if (state.initialPoint != null) {
-              controller.animateCamera(CameraUpdate.newLatLngZoom(
-                  state.initialPoint!.toLatLng(), 10));
-            }
-          },
-          onCameraMove: _clusterManager.onCameraMove,
-          onCameraIdle: _clusterManager.updateMap,
-          padding: EdgeInsets.only(
-            top: MediaQuery.of(context).padding.top,
-            bottom: MediaQuery.of(context).padding.bottom,
-          ),
-        ),
+        buildWhen: (previous, current) => previous.data != current.data,
+        builder: (context, state) {
+          final prevPosition =
+              context.read<PrefController>().mapBrowserPrevPositionValue;
+          return InteractiveMap(
+            providerHint: GpsMapProvider.google,
+            initialPosition: prevPosition ?? const MapCoord(0, 0),
+            initialZoom: prevPosition == null ? 2.5 : 10,
+            dataPoints: state.data,
+            onClusterTap: (dataPoints) {
+              final c = Collection(
+                name: "",
+                contentProvider: CollectionAdHocProvider(
+                  account: context.bloc.account,
+                  fileIds: dataPoints
+                      .cast<_DataPoint>()
+                      .map((e) => e.fileId)
+                      .toList(),
+                ),
+              );
+              Navigator.of(context).pushNamed(
+                CollectionBrowser.routeName,
+                arguments: CollectionBrowserArguments(c),
+              );
+            },
+            googleClusterBuilder: (context, dataPoints) =>
+                _GoogleMarkerBuilder(context).build(dataPoints),
+            contentPadding: EdgeInsets.only(
+              top: MediaQuery.of(context).padding.top,
+              bottom: MediaQuery.of(context).padding.bottom,
+            ),
+            onMapCreated: (controller) {
+              _controller = controller;
+              if (state.initialPoint != null) {
+                controller.setPosition(state.initialPoint!);
+              }
+            },
+          );
+        },
       ),
     );
   }
 
-  Future<BitmapDescriptor> _getClusterBitmap(
-    int size, {
-    String? text,
-    required Color color,
-  }) async {
-    final PictureRecorder pictureRecorder = PictureRecorder();
-    final Canvas canvas = Canvas(pictureRecorder);
-    final fillPaint = Paint()..color = color;
-    final outlinePaint = Paint()
-      ..color = Theme.of(context).brightness == Brightness.light
-          ? Colors.black.withOpacity(.28)
-          : Colors.white.withOpacity(.6)
-      ..strokeWidth = size / 28
-      ..style = PaintingStyle.stroke;
-
-    const shadowPadding = 6.0;
-    const shadowPaddingHalf = shadowPadding / 2;
-    final shadowPath = Path()
-      ..addOval(
-          Rect.fromLTWH(0, 0, size - shadowPadding, size - shadowPadding));
-    canvas.drawShadow(shadowPath, Colors.black, 1, false);
-    canvas.drawCircle(
-      Offset(size / 2 - shadowPaddingHalf, size / 2 - shadowPaddingHalf),
-      size / 2 - shadowPaddingHalf,
-      fillPaint,
-    );
-    canvas.drawCircle(
-      Offset(size / 2 - shadowPaddingHalf, size / 2 - shadowPaddingHalf),
-      size / 2 - shadowPaddingHalf - (size / 28 / 2),
-      outlinePaint,
-    );
-
-    if (text != null) {
-      TextPainter painter = TextPainter(textDirection: TextDirection.ltr);
-      painter.text = TextSpan(
-        text: text,
-        style: TextStyle(
-          fontSize: size / 3 - ((text.length / 6) * (size * 0.1)),
-          color: Theme.of(context).colorScheme.onPrimaryContainer,
-          fontWeight: FontWeight.normal,
-        ),
-      );
-      painter.layout();
-      painter.paint(
-        canvas,
-        Offset(
-          size / 2 - painter.width / 2 - shadowPaddingHalf,
-          size / 2 - painter.height / 2 - shadowPaddingHalf,
-        ),
-      );
-    }
-
-    final img = await pictureRecorder.endRecording().toImage(size, size);
-    final data = await img.toByteData(format: ImageByteFormat.png) as ByteData;
-
-    return BitmapDescriptor.fromBytes(data.buffer.asUint8List());
-  }
-
-  String _getMarkerCountString(int count) {
-    switch (count) {
-      case >= 10000:
-        return "10000+";
-      case >= 1000:
-        return "${count ~/ 1000 * 1000}+";
-      case >= 100:
-        return "${count ~/ 100 * 100}+";
-      case >= 10:
-        return "${count ~/ 10 * 10}+";
-      default:
-        return count.toString();
-    }
-  }
-
-  Color _getMarkerColor(int count) {
-    const step = 1 / 4;
-    final double r;
-    switch (count) {
-      case >= 10000:
-        r = 1;
-      case >= 1000:
-        r = (count ~/ 1000) / 10 * step + step * 3;
-      case >= 100:
-        r = (count ~/ 100) / 10 * step + step * 2;
-      case >= 10:
-        r = (count ~/ 10) / 10 * step + step;
-      default:
-        r = (count / 10) * step;
-    }
-    if (Theme.of(context).brightness == Brightness.light) {
-      return HSLColor.fromAHSL(
-        1,
-        _colorHsl.hue,
-        r * .7 + .3,
-        (_colorHsl.lightness - (.1 - r * .1)).clamp(0, 1),
-      ).toColor();
-    } else {
-      return HSLColor.fromAHSL(
-        1,
-        _colorHsl.hue,
-        r * .6 + .4,
-        (_colorHsl.lightness - (.1 - r * .1)).clamp(0, 1),
-      ).toColor();
-    }
-  }
-
-  int _getMarkerSize(int count) {
-    const step = 1 / 4;
-    final double r;
-    switch (count) {
-      case >= 10000:
-        r = 1;
-      case >= 1000:
-        r = (count ~/ 1000) / 10 * step + step * 3;
-      case >= 100:
-        r = (count ~/ 100) / 10 * step + step * 2;
-      case >= 10:
-        r = (count ~/ 10) / 10 * step + step;
-      default:
-        r = (count / 10) * step;
-    }
-    return (r * 85).toInt() + 85;
-  }
-
-  late final _clusterManager = ClusterManager<_DataPoint>(
-    const [],
-    (markers) {
-      if (mounted) {
-        context.addEvent(_SetMarkers(markers));
-      }
-    },
-    markerBuilder: (cluster) async => Marker(
-      markerId: MarkerId(cluster.getId()),
-      position: cluster.location,
-      onTap: () {
-        final c = Collection(
-          name: "",
-          contentProvider: CollectionAdHocProvider(
-            account: context.bloc.account,
-            fileIds: cluster.items.map((e) => e.fileId).toList(),
-          ),
-        );
-        Navigator.of(context).pushNamed(
-          CollectionBrowser.routeName,
-          arguments: CollectionBrowserArguments(c),
-        );
-      },
-      icon: await _getClusterBitmap(
-        _getMarkerSize(cluster.count * 1),
-        text: _getMarkerCountString(cluster.count * 1),
-        color: _getMarkerColor(cluster.count * 1),
-      ),
-    ),
-  );
-  GoogleMapController? _mapController;
-
-  late final _colorHsl =
-      HSLColor.fromColor(Theme.of(context).colorScheme.primaryContainer);
+  InteractiveMapController? _controller;
 }
 
 class _PanelContainer extends StatefulWidget {
@@ -430,7 +278,7 @@ class _DateFieldState extends State<_DateField> {
         onTap: () async {
           final result = await showDatePicker(
             context: context,
-            firstDate: DateTime(1970),
+            firstDate: DateTime.fromMillisecondsSinceEpoch(0),
             lastDate: clock.now(),
             currentDate: widget.date.toLocalDateTime(),
           );
@@ -458,7 +306,3 @@ class _DateFieldState extends State<_DateField> {
 
   late final _controller = TextEditingController(text: _stringify(widget.date));
 }
-
-// Generated in https://mapstyle.withgoogle.com/
-const _mapStyleNight =
-    '[{"elementType":"geometry","stylers":[{"color":"#242f3e"}]},{"elementType":"labels.text.fill","stylers":[{"color":"#746855"}]},{"elementType":"labels.text.stroke","stylers":[{"color":"#242f3e"}]},{"featureType":"administrative.locality","elementType":"labels.text.fill","stylers":[{"color":"#d59563"}]},{"featureType":"poi","elementType":"labels.text.fill","stylers":[{"color":"#d59563"}]},{"featureType":"poi.park","elementType":"geometry","stylers":[{"color":"#263c3f"}]},{"featureType":"poi.park","elementType":"labels.text.fill","stylers":[{"color":"#6b9a76"}]},{"featureType":"road","elementType":"geometry","stylers":[{"color":"#38414e"}]},{"featureType":"road","elementType":"geometry.stroke","stylers":[{"color":"#212a37"}]},{"featureType":"road","elementType":"labels.text.fill","stylers":[{"color":"#9ca5b3"}]},{"featureType":"road.highway","elementType":"geometry","stylers":[{"color":"#746855"}]},{"featureType":"road.highway","elementType":"geometry.stroke","stylers":[{"color":"#1f2835"}]},{"featureType":"road.highway","elementType":"labels.text.fill","stylers":[{"color":"#f3d19c"}]},{"featureType":"transit","elementType":"geometry","stylers":[{"color":"#2f3948"}]},{"featureType":"transit.station","elementType":"labels.text.fill","stylers":[{"color":"#d59563"}]},{"featureType":"water","elementType":"geometry","stylers":[{"color":"#17263c"}]},{"featureType":"water","elementType":"labels.text.fill","stylers":[{"color":"#515c6d"}]},{"featureType":"water","elementType":"labels.text.stroke","stylers":[{"color":"#17263c"}]}]';

app/pubspec.lock

@@ -661,7 +661,7 @@ packages:
     source: hosted
     version: "6.3.0"
   google_maps_cluster_manager:
-    dependency: "direct main"
+    dependency: transitive
     description:
       name: google_maps_cluster_manager
       sha256: "36e9a4b2d831c470fc85d692a6c9cec70e0f385d578b9697de5f4de347561b83"

app/pubspec.yaml

@@ -159,7 +159,6 @@ dependencies:
   woozy_search: ^2.0.3
 
   google_maps_flutter: 2.5.3
-  google_maps_cluster_manager: 3.1.0
 
 dependency_overrides:
   video_player:
@@ -177,6 +176,7 @@ dependency_overrides:
       url: https://gitlab.com/nc-photos/flutter-plugins
       ref: video_player-v2.8.6-nc-photos-2
       path: packages/video_player/video_player_platform_interface
+  # fix google_maps_cluster_manager
   google_maps_flutter_android: 2.7.0
   google_maps_flutter_platform_interface: 2.5.0
 

np_gps_map/lib/np_gps_map.dart

@@ -1,4 +1,6 @@
 library np_gps_map;
 
 export 'src/gps_map.dart';
+export 'src/interactive_map.dart';
 export 'src/map_coord.dart';
+export 'src/util.dart' show initGpsMap;

np_gps_map/lib/src/gps_map.dart

@@ -1,9 +1,9 @@
 import 'package:flutter/material.dart';
 import 'package:np_gps_map/src/map_coord.dart';
-import 'package:np_gps_map/src/native.dart';
 import 'package:np_gps_map/src/native/google_gps_map.dart'
     if (dart.library.html) 'package:np_gps_map/src/web/google_gps_map.dart';
 import 'package:np_gps_map/src/osm_gps_map.dart';
+import 'package:np_gps_map/src/util.dart';
 import 'package:np_platform_util/np_platform_util.dart';
 
 enum GpsMapProvider {
@@ -21,16 +21,10 @@ class GpsMap extends StatelessWidget {
     this.onTap,
   });
 
-  static void init() {
-    if (getRawPlatform() == NpPlatform.android) {
-      Native.isNewGMapsRenderer().then((value) => _isNewGMapsRenderer = value);
-    }
-  }
-
   @override
   Widget build(BuildContext context) {
     if (providerHint == GpsMapProvider.osm ||
-        (getRawPlatform() == NpPlatform.android && !_isNewGMapsRenderer)) {
+        (getRawPlatform() == NpPlatform.android && !isNewGMapsRenderer())) {
       return OsmGpsMap(
         center: center,
         zoom: zoom,
@@ -53,6 +47,4 @@ class GpsMap extends StatelessWidget {
   final MapCoord center;
   final double zoom;
   final void Function()? onTap;
-
-  static bool _isNewGMapsRenderer = false;
 }

np_gps_map/lib/src/interactive_map.dart

@@ -0,0 +1,62 @@
+import 'package:flutter/material.dart';
+import 'package:np_gps_map/src/gps_map.dart';
+import 'package:np_gps_map/src/interactive_map/google.dart';
+import 'package:np_gps_map/src/map_coord.dart';
+import 'package:np_gps_map/src/util.dart';
+import 'package:np_platform_util/np_platform_util.dart';
+
+// Client may extend this class to add custom data
+class DataPoint {
+  const DataPoint({
+    required this.position,
+  });
+
+  final MapCoord position;
+}
+
+abstract class InteractiveMapController {
+  void setPosition(MapCoord position);
+}
+
+class InteractiveMap extends StatelessWidget {
+  const InteractiveMap({
+    super.key,
+    required this.providerHint,
+    this.initialPosition,
+    this.initialZoom,
+    this.dataPoints,
+    this.onClusterTap,
+    this.googleClusterBuilder,
+    this.contentPadding,
+    this.onMapCreated,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    if (providerHint == GpsMapProvider.osm ||
+        (getRawPlatform() == NpPlatform.android && !isNewGMapsRenderer())) {
+      return const SizedBox.shrink();
+    } else {
+      return GoogleInteractiveMap(
+        initialPosition: initialPosition,
+        initialZoom: initialZoom,
+        dataPoints: dataPoints,
+        onClusterTap: onClusterTap,
+        clusterBuilder: googleClusterBuilder,
+        contentPadding: contentPadding,
+        onMapCreated: onMapCreated,
+      );
+    }
+  }
+
+  /// The backend to provide the actual map. This works as a hint only, the
+  /// actual choice may be different depending on the runtime environment
+  final GpsMapProvider providerHint;
+  final MapCoord? initialPosition;
+  final double? initialZoom;
+  final List<DataPoint>? dataPoints;
+  final void Function(List<DataPoint> dataPoints)? onClusterTap;
+  final GoogleClusterBuilder? googleClusterBuilder;
+  final EdgeInsets? contentPadding;
+  final void Function(InteractiveMapController controller)? onMapCreated;
+}

np_gps_map/lib/src/interactive_map/google.dart

@@ -0,0 +1,137 @@
+import 'dart:async';
+
+import 'package:flutter/material.dart';
+import 'package:google_maps_cluster_manager/google_maps_cluster_manager.dart';
+import 'package:google_maps_flutter/google_maps_flutter.dart';
+import 'package:np_common/object_util.dart';
+import 'package:np_gps_map/src/interactive_map.dart';
+import 'package:np_gps_map/src/map_coord.dart';
+
+typedef GoogleClusterBuilder = FutureOr<BitmapDescriptor> Function(
+    BuildContext context, List<DataPoint> dataPoints);
+
+class GoogleInteractiveMap extends StatefulWidget {
+  const GoogleInteractiveMap({
+    super.key,
+    this.initialPosition,
+    this.initialZoom,
+    this.dataPoints,
+    this.clusterBuilder,
+    this.onClusterTap,
+    this.contentPadding,
+    this.onMapCreated,
+  });
+
+  @override
+  State<StatefulWidget> createState() => _GoogleInteractiveMapState();
+
+  final MapCoord? initialPosition;
+  final double? initialZoom;
+  final List<DataPoint>? dataPoints;
+  final GoogleClusterBuilder? clusterBuilder;
+  final void Function(List<DataPoint> dataPoints)? onClusterTap;
+  final EdgeInsets? contentPadding;
+  final void Function(InteractiveMapController controller)? onMapCreated;
+}
+
+class _GoogleInteractiveMapState extends State<GoogleInteractiveMap> {
+  @override
+  void didUpdateWidget(covariant GoogleInteractiveMap oldWidget) {
+    super.didUpdateWidget(oldWidget);
+    if (widget.dataPoints != oldWidget.dataPoints) {
+      _clusterManager.setItems(widget.dataPoints
+              ?.map((e) => _GoogleDataPoint(original: e))
+              .toList() ??
+          []);
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return GoogleMap(
+      mapType: MapType.normal,
+      initialCameraPosition: widget.initialPosition?.let((e) => CameraPosition(
+                target: widget.initialPosition!.toLatLng(),
+                zoom: widget.initialZoom ?? 10,
+              )) ??
+          const CameraPosition(target: LatLng(0, 0)),
+      markers: _markers,
+      onMapCreated: _onMapCreated,
+      onCameraMove: _clusterManager.onCameraMove,
+      onCameraIdle: _clusterManager.updateMap,
+      padding: widget.contentPadding ?? EdgeInsets.zero,
+    );
+  }
+
+  void _onMapCreated(GoogleMapController controller) {
+    _parentController = _ParentController(controller);
+    widget.onMapCreated?.call(_parentController!);
+
+    _clusterManager.setMapId(controller.mapId);
+
+    if (Theme.of(context).brightness == Brightness.dark) {
+      controller.setMapStyle(_mapStyleNight);
+    }
+  }
+
+  late final _clusterManager = ClusterManager<_GoogleDataPoint>(
+    const [],
+    (markers) {
+      if (mounted) {
+        setState(() {
+          _markers = markers;
+        });
+      }
+    },
+    markerBuilder: (cluster) async {
+      final dataPoints = cluster.items.map((e) => e.original).toList();
+      return Marker(
+        markerId: MarkerId(cluster.getId()),
+        position: cluster.location,
+        onTap: () {
+          widget.onClusterTap?.call(dataPoints);
+        },
+        icon: await widget.clusterBuilder?.call(context, dataPoints) ??
+            BitmapDescriptor.defaultMarker,
+      );
+    },
+  );
+
+  _ParentController? _parentController;
+  var _markers = <Marker>{};
+}
+
+class _GoogleDataPoint implements ClusterItem {
+  const _GoogleDataPoint({
+    required this.original,
+  });
+
+  @override
+  LatLng get location => original.position.toLatLng();
+
+  @override
+  String get geohash =>
+      Geohash.encode(location, codeLength: ClusterManager.precision);
+
+  final DataPoint original;
+}
+
+class _ParentController implements InteractiveMapController {
+  const _ParentController(this.controller);
+
+  @override
+  void setPosition(MapCoord position) {
+    controller
+        .animateCamera(CameraUpdate.newLatLngZoom(position.toLatLng(), 10));
+  }
+
+  final GoogleMapController controller;
+}
+
+extension on MapCoord {
+  LatLng toLatLng() => LatLng(latitude, longitude);
+}
+
+// Generated by https://mapstyle.withgoogle.com/
+const _mapStyleNight =
+    '[{"elementType":"geometry","stylers":[{"color":"#242f3e"}]},{"elementType":"labels.text.fill","stylers":[{"color":"#746855"}]},{"elementType":"labels.text.stroke","stylers":[{"color":"#242f3e"}]},{"featureType":"administrative.locality","elementType":"labels.text.fill","stylers":[{"color":"#d59563"}]},{"featureType":"poi","elementType":"labels.text.fill","stylers":[{"color":"#d59563"}]},{"featureType":"poi.park","elementType":"geometry","stylers":[{"color":"#263c3f"}]},{"featureType":"poi.park","elementType":"labels.text.fill","stylers":[{"color":"#6b9a76"}]},{"featureType":"road","elementType":"geometry","stylers":[{"color":"#38414e"}]},{"featureType":"road","elementType":"geometry.stroke","stylers":[{"color":"#212a37"}]},{"featureType":"road","elementType":"labels.text.fill","stylers":[{"color":"#9ca5b3"}]},{"featureType":"road.highway","elementType":"geometry","stylers":[{"color":"#746855"}]},{"featureType":"road.highway","elementType":"geometry.stroke","stylers":[{"color":"#1f2835"}]},{"featureType":"road.highway","elementType":"labels.text.fill","stylers":[{"color":"#f3d19c"}]},{"featureType":"transit","elementType":"geometry","stylers":[{"color":"#2f3948"}]},{"featureType":"transit.station","elementType":"labels.text.fill","stylers":[{"color":"#d59563"}]},{"featureType":"water","elementType":"geometry","stylers":[{"color":"#17263c"}]},{"featureType":"water","elementType":"labels.text.fill","stylers":[{"color":"#515c6d"}]},{"featureType":"water","elementType":"labels.text.stroke","stylers":[{"color":"#17263c"}]}]';

np_gps_map/lib/src/util.dart

@@ -0,0 +1,12 @@
+import 'package:np_gps_map/src/native.dart';
+import 'package:np_platform_util/np_platform_util.dart';
+
+void initGpsMap() {
+  if (getRawPlatform() == NpPlatform.android) {
+    Native.isNewGMapsRenderer().then((value) => _isNewGMapsRenderer = value);
+  }
+}
+
+bool isNewGMapsRenderer() => _isNewGMapsRenderer;
+
+var _isNewGMapsRenderer = false;

np_gps_map/pubspec.yaml

@@ -12,14 +12,21 @@ dependencies:
   flutter:
     sdk: flutter
   flutter_map: ^6.1.0
-  google_maps_flutter: ^2.2.8
+  google_maps_flutter: 2.5.3
+  google_maps_cluster_manager: 3.1.0
   latlong2: any
   np_async:
     path: ../np_async
+  np_common:
+    path: ../np_common
   np_platform_util:
     path: ../np_platform_util
   url_launcher: ^6.1.11
 
+dependency_overrides:
+  google_maps_flutter_android: 2.7.0
+  google_maps_flutter_platform_interface: 2.5.0
+
 dev_dependencies:
   np_lints:
     path: ../np_lints