138 lines
4 KiB
Dart
138 lines
4 KiB
Dart
import 'dart:async';
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import 'dart:typed_data';
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import 'package:aves/model/settings/settings.dart';
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import 'package:aves/widgets/viewer/info/location_section.dart';
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import 'package:aves/widgets/viewer/info/maps/common.dart';
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import 'package:aves/widgets/viewer/info/maps/marker.dart';
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import 'package:flutter/material.dart';
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import 'package:google_maps_flutter/google_maps_flutter.dart';
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import 'package:tuple/tuple.dart';
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class EntryGoogleMap extends StatefulWidget {
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final LatLng latLng;
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final String geoUri;
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final double initialZoom;
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final String markerId;
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final WidgetBuilder markerBuilder;
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EntryGoogleMap({
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Key key,
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Tuple2<double, double> latLng,
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this.geoUri,
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this.initialZoom,
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this.markerId,
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this.markerBuilder,
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}) : latLng = LatLng(latLng.item1, latLng.item2),
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super(key: key);
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@override
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State<StatefulWidget> createState() => _EntryGoogleMapState();
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}
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class _EntryGoogleMapState extends State<EntryGoogleMap> with AutomaticKeepAliveClientMixin {
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GoogleMapController _controller;
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Completer<Uint8List> _markerLoaderCompleter;
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@override
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void initState() {
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super.initState();
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_markerLoaderCompleter = Completer<Uint8List>();
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}
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@override
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void didUpdateWidget(covariant EntryGoogleMap oldWidget) {
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super.didUpdateWidget(oldWidget);
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if (widget.latLng != oldWidget.latLng && _controller != null) {
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_controller.moveCamera(CameraUpdate.newLatLng(widget.latLng));
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}
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if (widget.markerId != oldWidget.markerId) {
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_markerLoaderCompleter = Completer<Uint8List>();
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}
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}
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@override
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void dispose() {
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super.dispose();
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_controller?.dispose();
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}
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@override
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Widget build(BuildContext context) {
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super.build(context);
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return Stack(
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children: [
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MarkerGeneratorWidget(
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key: Key(widget.markerId),
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markers: [widget.markerBuilder(context)],
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onComplete: (bitmaps) => _markerLoaderCompleter.complete(bitmaps.first),
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),
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MapDecorator(
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child: _buildMap(),
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),
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MapButtonPanel(
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geoUri: widget.geoUri,
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zoomBy: _zoomBy,
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),
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],
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);
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}
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Widget _buildMap() {
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return FutureBuilder<Uint8List>(
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future: _markerLoaderCompleter.future,
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builder: (context, snapshot) {
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final markers = <Marker>{};
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if (!snapshot.hasError && snapshot.connectionState == ConnectionState.done) {
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final markerBytes = snapshot.data;
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markers.add(Marker(
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markerId: MarkerId(widget.markerId),
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icon: BitmapDescriptor.fromBytes(markerBytes),
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position: widget.latLng,
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));
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}
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return GoogleMap(
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// GoogleMap init perf issue: https://github.com/flutter/flutter/issues/28493
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initialCameraPosition: CameraPosition(
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target: widget.latLng,
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zoom: widget.initialZoom,
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),
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onMapCreated: (controller) => setState(() => _controller = controller),
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compassEnabled: false,
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mapToolbarEnabled: false,
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mapType: _toMapStyle(settings.infoMapStyle),
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rotateGesturesEnabled: false,
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scrollGesturesEnabled: false,
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zoomControlsEnabled: false,
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zoomGesturesEnabled: false,
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liteModeEnabled: false,
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// no camera animation in lite mode
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tiltGesturesEnabled: false,
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myLocationEnabled: false,
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myLocationButtonEnabled: false,
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markers: markers,
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);
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});
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}
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void _zoomBy(double amount) {
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settings.infoMapZoom += amount;
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_controller.animateCamera(CameraUpdate.zoomBy(amount));
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}
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MapType _toMapStyle(EntryMapStyle style) {
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switch (style) {
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case EntryMapStyle.googleNormal:
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return MapType.normal;
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case EntryMapStyle.googleHybrid:
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return MapType.hybrid;
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case EntryMapStyle.googleTerrain:
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return MapType.terrain;
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default:
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return MapType.none;
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}
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}
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@override
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bool get wantKeepAlive => true;
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}
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