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feat: Add support for offline vector maps using MBTiles

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- Introduced new MapLayerType for vector MBTiles.
- Enhanced MapLayer class to handle vector-specific properties.
- Implemented MBTilesService for managing MBTiles files, including import and deletion functionalities.
- Updated MapManagementScreen to allow importing and managing MBTiles files.
- Added UI components for displaying and interacting with MBTiles layers.
- Integrated vector tile rendering in MapTab, supporting dynamic theme loading.
- Updated pubspec.yaml to include necessary dependencies for MBTiles and vector tiles.
This commit is contained in:
Janez T
2025-10-16 23:35:43 +02:00
parent 7f20e5ad36
commit 3a0bcabdea
26 changed files with 2042 additions and 74 deletions
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295
lib/screens/map_management_screen.dart
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@@ -1,8 +1,11 @@
import 'dart:io';
import 'package:flutter/material.dart';
import 'package:flutter_map/flutter_map.dart';
import 'package:latlong2/latlong.dart';
import 'package:file_picker/file_picker.dart';
import '../services/tile_cache_service.dart';
import '../services/validation_service.dart';
import '../services/mbtiles_service.dart';
import '../models/map_layer.dart';
import '../l10n/app_localizations.dart';
@@ -28,6 +31,8 @@ class _MapManagementScreenState extends State<MapManagementScreen> {
bool _isLoading = false;
String? _statusMessage;
Map<String, dynamic>? _cacheStats;
final MbtilesService _mbtilesService = MbtilesService();
List<MbtilesMetadata> _mbtilesFiles = [];
// Download parameters
late MapLayer _selectedLayer;
@@ -77,6 +82,7 @@ class _MapManagementScreenState extends State<MapManagementScreen> {
}
_loadCacheStats();
_loadMbtilesFiles();
}
@override
@@ -107,6 +113,111 @@ class _MapManagementScreenState extends State<MapManagementScreen> {
}
}
Future<void> _loadMbtilesFiles() async {
if (!mounted) return;
try {
final files = await _mbtilesService.getAllMetadata();
if (!mounted) return;
setState(() {
_mbtilesFiles = files;
});
} catch (e) {
debugPrint('Error loading MBTiles files: $e');
}
}
Future<void> _importMbtilesFile() async {
try {
final result = await FilePicker.platform.pickFiles(
type: FileType.custom,
allowedExtensions: ['mbtiles'],
);
if (result == null || result.files.isEmpty) return;
final sourcePath = result.files.first.path;
if (sourcePath == null) return;
if (!mounted) return;
setState(() => _isLoading = true);
final importedFile = await _mbtilesService.importMbtilesFile(sourcePath);
if (!mounted) return;
setState(() => _isLoading = false);
if (importedFile != null) {
await _loadMbtilesFiles();
if (mounted) {
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(
content: Text(AppLocalizations.of(context)!.mbtilesImportedSuccessfully),
backgroundColor: Colors.green,
),
);
}
} else {
_showError(AppLocalizations.of(context)!.failedToImportMbtiles);
}
} catch (e) {
if (!mounted) return;
setState(() => _isLoading = false);
_showError('${AppLocalizations.of(context)!.failedToImportMbtiles}: $e');
}
}
Future<void> _deleteMbtilesFile(MbtilesMetadata metadata) async {
final confirmed = await showDialog<bool>(
context: context,
builder: (context) => AlertDialog(
title: Text(AppLocalizations.of(context)!.deleteMbtilesConfirmTitle),
content: Text(
AppLocalizations.of(context)!.deleteMbtilesConfirmMessage(metadata.name),
),
actions: [
TextButton(
onPressed: () => Navigator.pop(context, false),
child: Text(AppLocalizations.of(context)!.cancel),
),
TextButton(
onPressed: () => Navigator.pop(context, true),
style: TextButton.styleFrom(foregroundColor: Colors.red),
child: Text(AppLocalizations.of(context)!.delete),
),
],
),
);
if (confirmed != true) return;
if (!mounted) return;
setState(() => _isLoading = true);
try {
final success = await _mbtilesService.deleteMbtilesFile(metadata.file);
if (!mounted) return;
setState(() => _isLoading = false);
if (success) {
await _loadMbtilesFiles();
if (mounted) {
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(
content: Text(AppLocalizations.of(context)!.mbtilesDeletedSuccessfully),
backgroundColor: Colors.green,
),
);
}
} else {
_showError(AppLocalizations.of(context)!.failedToDeleteMbtiles);
}
} catch (e) {
if (!mounted) return;
setState(() => _isLoading = false);
_showError('${AppLocalizations.of(context)!.failedToDeleteMbtiles}: $e');
}
}
Future<void> _downloadRegion() async {
final validator = ValidationService();
@@ -309,6 +420,10 @@ class _MapManagementScreenState extends State<MapManagementScreen> {
_buildStatisticsCard(),
const SizedBox(height: 16),
// Offline Vector Maps (MBTiles)
_buildMbtilesCard(),
const SizedBox(height: 16),
// Download Region
_buildDownloadCard(),
const SizedBox(height: 16),
@@ -382,6 +497,172 @@ class _MapManagementScreenState extends State<MapManagementScreen> {
);
}
Widget _buildMbtilesCard() {
return Card(
child: Padding(
padding: const EdgeInsets.all(16),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
Expanded(
child: Text(
AppLocalizations.of(context)!.offlineVectorMaps,
style: Theme.of(context).textTheme.titleLarge,
overflow: TextOverflow.ellipsis,
),
),
IconButton(
icon: const Icon(Icons.refresh),
onPressed: _loadMbtilesFiles,
),
],
),
const SizedBox(height: 8),
Text(
AppLocalizations.of(context)!.offlineVectorMapsDescription,
style: TextStyle(fontSize: 12, color: Colors.grey[600]),
),
const SizedBox(height: 16),
// List of MBTiles files
if (_mbtilesFiles.isEmpty)
Center(
child: Padding(
padding: const EdgeInsets.all(16),
child: Column(
children: [
Icon(Icons.map_outlined, size: 48, color: Colors.grey[400]),
const SizedBox(height: 8),
Text(
AppLocalizations.of(context)!.noMbtilesFiles,
style: TextStyle(color: Colors.grey[600]),
),
],
),
),
)
else
..._mbtilesFiles.map((metadata) => Card(
color: Theme.of(context).colorScheme.surfaceContainerHighest,
margin: const EdgeInsets.only(bottom: 8),
child: ExpansionTile(
leading: Icon(
metadata.isVector ? Icons.layers : Icons.image,
color: metadata.isVector ? Colors.blue : Colors.orange,
),
title: Text(
metadata.name,
style: const TextStyle(fontWeight: FontWeight.bold),
),
subtitle: Text(
'${metadata.fileSizeFormatted} • ${metadata.format?.toUpperCase() ?? "Unknown"}',
),
children: [
Padding(
padding: const EdgeInsets.all(16),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
if (metadata.description != null) ...[
Text(
metadata.description!,
style: TextStyle(color: Colors.grey[700]),
),
const SizedBox(height: 12),
],
_buildInfoRow(
AppLocalizations.of(context)!.zoomLevels,
'${metadata.minZoom ?? "?"} - ${metadata.maxZoom ?? "?"}',
),
if (metadata.bounds != null)
_buildInfoRow(
AppLocalizations.of(context)!.bounds,
metadata.bounds!,
),
if (metadata.isVector) ...[
_buildInfoRow(
AppLocalizations.of(context)!.type,
AppLocalizations.of(context)!.vectorTiles,
),
_buildInfoRow(
AppLocalizations.of(context)!.schema,
_mbtilesService.getVectorSchema(metadata) ??
AppLocalizations.of(context)!.unknown,
),
],
const SizedBox(height: 12),
Row(
mainAxisAlignment: MainAxisAlignment.end,
children: [
TextButton.icon(
onPressed: () => _deleteMbtilesFile(metadata),
icon: const Icon(Icons.delete, color: Colors.red),
label: Text(
AppLocalizations.of(context)!.delete,
style: const TextStyle(color: Colors.red),
),
),
],
),
],
),
),
],
),
)),
const SizedBox(height: 16),
// Import button
ElevatedButton.icon(
onPressed: _importMbtilesFile,
icon: const Icon(Icons.file_upload),
label: Text(AppLocalizations.of(context)!.importMbtiles),
style: ElevatedButton.styleFrom(
minimumSize: const Size.fromHeight(48),
),
),
const SizedBox(height: 8),
Text(
AppLocalizations.of(context)!.importMbtilesNote,
style: TextStyle(fontSize: 12, color: Colors.grey[600]),
),
],
),
),
);
}
Widget _buildInfoRow(String label, String value) {
return Padding(
padding: const EdgeInsets.symmetric(vertical: 4),
child: Row(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
SizedBox(
width: 100,
child: Text(
label,
style: TextStyle(
fontWeight: FontWeight.w500,
color: Colors.grey[700],
),
),
),
Expanded(
child: Text(
value,
style: TextStyle(color: Colors.grey[800]),
),
),
],
),
);
}
Widget _buildDownloadCard() {
return Card(
child: Padding(
@@ -559,13 +840,17 @@ class _MapManagementScreenState extends State<MapManagementScreen> {
Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
Text(
_statusMessage ?? AppLocalizations.of(context)!.downloadingDots,
style: TextStyle(
fontWeight: FontWeight.w500,
color: Theme.of(context).colorScheme.onPrimaryContainer,
Expanded(
child: Text(
_statusMessage ?? AppLocalizations.of(context)!.downloadingDots,
style: TextStyle(
fontWeight: FontWeight.w500,
color: Theme.of(context).colorScheme.onPrimaryContainer,
),
overflow: TextOverflow.ellipsis,
),
),
const SizedBox(width: 8),
Text(
'${_downloadProgress.toStringAsFixed(1)}%',
style: TextStyle(