74 lines
2 KiB
Dart
74 lines
2 KiB
Dart
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import 'package:flutter/foundation.dart';
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import 'package:flutter/material.dart';
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import 'package:latlong/latlong.dart';
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import 'package:photos/models/photo.dart';
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import 'package:photos/photo_repository.dart';
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import 'package:photos/ui/gallery.dart';
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import 'package:photos/ui/loading_widget.dart';
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class LocationSearchResultsPage extends StatefulWidget {
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final LatLng location;
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final String name;
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LocationSearchResultsPage(this.location, this.name, {Key key})
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: super(key: key);
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@override
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_LocationSearchResultsPageState createState() =>
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_LocationSearchResultsPageState();
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}
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class _LocationSearchResultsPageState extends State<LocationSearchResultsPage> {
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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appBar: AppBar(
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title: Text(widget.name),
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),
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body: Container(
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child: _getBody(),
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),
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);
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}
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FutureBuilder<List<Photo>> _getBody() {
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return FutureBuilder<List<Photo>>(
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future: _getResult(),
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builder: (context, snapshot) {
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if (snapshot.hasData) {
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return Gallery(
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snapshot.data,
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Set<Photo>(),
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);
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} else {
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return Center(child: loadWidget);
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}
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},
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);
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}
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Future<List<Photo>> _getResult() async {
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final photos = PhotoRepository.instance.photos;
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final args = Map<String, dynamic>();
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args['photos'] = photos;
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args['location'] = widget.location;
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args['maxDistance'] = 5000;
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return await compute(_filterPhotos, args);
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}
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static List<Photo> _filterPhotos(Map<String, dynamic> args) {
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List<Photo> photos = args['photos'];
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LatLng location = args['location'];
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int maxDistance = args['maxDistance'];
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final result = List<Photo>();
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for (final photo in photos) {
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final distance = Distance().as(LengthUnit.Meter, location,
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new LatLng(photo.latitude, photo.longitude));
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if (distance < maxDistance) {
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result.add(photo);
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}
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}
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return result;
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}
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}
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