tune the app

.claude/worktrees/relaxed-wright

@@ -0,0 +1 @@
+Subproject commit a3aaf1b6de30f5134d8180dbeee145d598e6e9a8

backend/initdb/02_tile_functions.sql

@@ -0,0 +1,216 @@
+-- Zoom-dependent tile functions for Martin.
+-- These apply geometry simplification and feature filtering so that
+-- low-zoom tiles contain fewer, simpler features.
+
+--------------------------------------------------------------------------------
+-- planet_osm_polygon
+--------------------------------------------------------------------------------
+CREATE OR REPLACE FUNCTION tile_polygon(z integer, x integer, y integer)
+RETURNS bytea AS $$
+DECLARE
+  bounds geometry;
+  tolerance double precision;
+  result bytea;
+BEGIN
+  bounds := ST_TileEnvelope(z, x, y);
+
+  -- Simplification tolerance scales with zoom: lower zoom = more aggressive
+  tolerance := CASE
+    WHEN z >= 13 THEN 0        -- full detail
+    WHEN z >= 11 THEN 1        -- light simplification
+    WHEN z >= 9  THEN 10       -- moderate
+    ELSE 50                     -- heavy
+  END;
+
+  WITH features AS (
+    SELECT
+      osm_id,
+      name,
+      building,
+      landuse,
+      "natural",
+      amenity,
+      leisure,
+      water,
+      waterway,
+      CASE
+        WHEN tolerance = 0 THEN ST_AsMVTGeom(way, bounds)
+        ELSE ST_AsMVTGeom(
+          ST_Simplify(way, tolerance, true),
+          bounds
+        )
+      END AS geom
+    FROM planet_osm_polygon
+    WHERE way && bounds
+      -- Feature filtering by zoom level:
+      AND CASE
+        -- zoom 8-9: only water, large forests/parks
+        WHEN z < 10 THEN
+          "natural" IN ('water', 'wood') OR landuse IN ('forest', 'reservoir')
+        -- zoom 10-11: add more landuse
+        WHEN z < 12 THEN
+          "natural" IN ('water', 'wood', 'wetland', 'heath', 'scrub')
+          OR landuse IN ('forest', 'reservoir', 'residential', 'industrial',
+                         'commercial', 'farmland', 'meadow', 'grass')
+          OR leisure IN ('park', 'nature_reserve', 'garden')
+        -- zoom 12: add buildings (large only)
+        WHEN z < 13 THEN
+          "natural" IS NOT NULL OR landuse IS NOT NULL OR leisure IS NOT NULL
+          OR water IS NOT NULL
+          OR (building IS NOT NULL AND ST_Area(way) > 5000)
+        -- zoom 13+: everything
+        ELSE true
+      END
+  )
+  SELECT ST_AsMVT(features, 'planet_osm_polygon') INTO result FROM features;
+
+  RETURN result;
+END;
+$$ LANGUAGE plpgsql STABLE PARALLEL SAFE;
+
+--------------------------------------------------------------------------------
+-- planet_osm_line
+--------------------------------------------------------------------------------
+CREATE OR REPLACE FUNCTION tile_line(z integer, x integer, y integer)
+RETURNS bytea AS $$
+DECLARE
+  bounds geometry;
+  tolerance double precision;
+  result bytea;
+BEGIN
+  bounds := ST_TileEnvelope(z, x, y);
+
+  tolerance := CASE
+    WHEN z >= 13 THEN 0
+    WHEN z >= 11 THEN 5
+    ELSE 20
+  END;
+
+  WITH features AS (
+    SELECT
+      osm_id,
+      name,
+      highway,
+      railway,
+      waterway,
+      CASE
+        WHEN tolerance = 0 THEN ST_AsMVTGeom(way, bounds)
+        ELSE ST_AsMVTGeom(
+          ST_Simplify(way, tolerance, true),
+          bounds
+        )
+      END AS geom
+    FROM planet_osm_line
+    WHERE way && bounds
+      AND CASE
+        -- zoom 10-11: only major roads and rivers
+        WHEN z < 12 THEN
+          highway IN ('motorway', 'trunk', 'primary', 'secondary')
+          OR railway IN ('rail')
+          OR waterway IN ('river', 'canal')
+        -- zoom 12: add tertiary roads
+        WHEN z < 13 THEN
+          highway IN ('motorway', 'trunk', 'primary', 'secondary',
+                      'tertiary', 'motorway_link', 'trunk_link')
+          OR railway IS NOT NULL
+          OR waterway IS NOT NULL
+        -- zoom 13+: everything
+        ELSE true
+      END
+  )
+  SELECT ST_AsMVT(features, 'planet_osm_line') INTO result FROM features;
+
+  RETURN result;
+END;
+$$ LANGUAGE plpgsql STABLE PARALLEL SAFE;
+
+--------------------------------------------------------------------------------
+-- planet_osm_point
+--------------------------------------------------------------------------------
+CREATE OR REPLACE FUNCTION tile_point(z integer, x integer, y integer)
+RETURNS bytea AS $$
+DECLARE
+  bounds geometry;
+  result bytea;
+BEGIN
+  bounds := ST_TileEnvelope(z, x, y);
+
+  WITH features AS (
+    SELECT
+      osm_id,
+      name,
+      place,
+      amenity,
+      shop,
+      tourism,
+      "natural",
+      ST_AsMVTGeom(way, bounds) AS geom
+    FROM planet_osm_point
+    WHERE way && bounds
+      AND CASE
+        -- zoom 12: only cities/towns/villages and major POIs
+        WHEN z < 13 THEN
+          place IN ('city', 'town', 'village')
+        -- zoom 13: add hamlets and named POIs
+        WHEN z < 14 THEN
+          place IS NOT NULL
+          OR (name IS NOT NULL AND (amenity IS NOT NULL OR tourism IS NOT NULL))
+        -- zoom 14+: everything
+        ELSE true
+      END
+  )
+  SELECT ST_AsMVT(features, 'planet_osm_point') INTO result FROM features;
+
+  RETURN result;
+END;
+$$ LANGUAGE plpgsql STABLE PARALLEL SAFE;
+
+--------------------------------------------------------------------------------
+-- planet_osm_roads
+--------------------------------------------------------------------------------
+CREATE OR REPLACE FUNCTION tile_roads(z integer, x integer, y integer)
+RETURNS bytea AS $$
+DECLARE
+  bounds geometry;
+  tolerance double precision;
+  result bytea;
+BEGIN
+  bounds := ST_TileEnvelope(z, x, y);
+
+  tolerance := CASE
+    WHEN z >= 10 THEN 0
+    WHEN z >= 8  THEN 10
+    ELSE 50
+  END;
+
+  WITH features AS (
+    SELECT
+      osm_id,
+      name,
+      highway,
+      ref,
+      CASE
+        WHEN tolerance = 0 THEN ST_AsMVTGeom(way, bounds)
+        ELSE ST_AsMVTGeom(
+          ST_Simplify(way, tolerance, true),
+          bounds
+        )
+      END AS geom
+    FROM planet_osm_roads
+    WHERE way && bounds
+      AND CASE
+        -- zoom 6-7: motorways only
+        WHEN z < 8 THEN
+          highway IN ('motorway', 'trunk')
+        -- zoom 8-9: add primary roads
+        WHEN z < 10 THEN
+          highway IN ('motorway', 'trunk', 'primary')
+        -- zoom 10+: everything in the roads table
+        ELSE true
+      END
+  )
+  SELECT ST_AsMVT(features, 'planet_osm_roads') INTO result FROM features;
+
+  RETURN result;
+END;
+$$ LANGUAGE plpgsql STABLE PARALLEL SAFE;

backend/martin-config.yaml

@@ -3,43 +3,31 @@ listen_addresses: '0.0.0.0:3001'
 postgres:
   connection_string: ${DATABASE_URL}
 
-  tables:
+  functions:
     planet_osm_polygon:
       schema: public
-      table: planet_osm_polygon
+      function: tile_polygon
-      srid: 3857
+      minzoom: 8
-      geometry_column: way
-      geometry_type: GEOMETRY
-      minzoom: 4
       maxzoom: 14
       bounds: [-180.0, -85.0511, 180.0, 85.0511]
 
     planet_osm_line:
       schema: public
-      table: planet_osm_line
+      function: tile_line
-      srid: 3857
+      minzoom: 10
-      geometry_column: way
-      geometry_type: GEOMETRY
-      minzoom: 8
       maxzoom: 14
       bounds: [-180.0, -85.0511, 180.0, 85.0511]
 
     planet_osm_point:
       schema: public
-      table: planet_osm_point
+      function: tile_point
-      srid: 3857
+      minzoom: 12
-      geometry_column: way
-      geometry_type: GEOMETRY
-      minzoom: 10
       maxzoom: 14
       bounds: [-180.0, -85.0511, 180.0, 85.0511]
 
     planet_osm_roads:
       schema: public
-      table: planet_osm_roads
+      function: tile_roads
-      srid: 3857
+      minzoom: 6
-      geometry_column: way
-      geometry_type: GEOMETRY
-      minzoom: 4
       maxzoom: 14
       bounds: [-180.0, -85.0511, 180.0, 85.0511]

mobile/lib/core/constants.dart

@@ -6,13 +6,16 @@ class AppConstants {
   /// Default backend URL when none is configured.
   static const String defaultBackendUrl = 'http://192.168.2.59:8080';
 
+  /// Default Martin tile server URL when none is configured.
+  static const String defaultMartinUrl = 'http://192.168.2.59:3001';
+
   /// Default map center: Amsterdam.
   static const double defaultLat = 52.3676;
   static const double defaultLon = 4.9041;
   static final LatLng defaultCenter = LatLng(defaultLat, defaultLon);
 
   /// Zoom levels.
-  static const double minZoom = 0;
+  static const double minZoom = 6;
   static const double maxZoom = 18;
   static const double defaultZoom = 13;
   static const double poiZoom = 16;
@@ -26,5 +29,6 @@ class AppConstants {
 
   /// Settings keys.
   static const String settingBackendUrl = 'backend_url';
+  static const String settingMartinUrl = 'martin_url';
   static const String settingThemeMode = 'theme_mode';
 }

mobile/lib/features/map/presentation/screens/map_screen.dart

@@ -4,7 +4,6 @@ import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:go_router/go_router.dart';
 import 'package:path_provider/path_provider.dart';
 import 'package:vector_map_tiles/vector_map_tiles.dart';
-import '../../../../core/api/api_client.dart';
 import '../../providers/map_provider.dart';
 import '../../providers/map_style_provider.dart';
 import '../widgets/map_controls.dart';
@@ -38,8 +37,8 @@ class _MapScreenState extends ConsumerState<MapScreen> {
   @override
   Widget build(BuildContext context) {
     final mapState = ref.watch(mapProvider);
-    final apiClient = ref.watch(apiClientProvider);
+    final martinUrl = ref.watch(martinUrlProvider);
-    final styleAsync = ref.watch(mapStyleProvider(apiClient.baseUrl));
+    final styleAsync = ref.watch(mapStyleProvider(martinUrl));
 
     // Move the map only for programmatic state changes (locateUser,
     // zoomIn/zoomOut).  Gesture-driven pans no longer call updateCamera(),
@@ -60,7 +59,7 @@ class _MapScreenState extends ConsumerState<MapScreen> {
               backgroundColor: Colors.transparent,
               initialCenter: mapState.center,
               initialZoom: mapState.zoom,
-              minZoom: 0,
+              minZoom: 6,
               maxZoom: 18,
               onPositionChanged: (position, hasGesture) {
                 // Intentionally not syncing gesture-driven position changes
@@ -75,19 +74,26 @@ class _MapScreenState extends ConsumerState<MapScreen> {
               },
             ),
             children: [
-              styleAsync.when(
+              // Defer tile loading until the initial location is known so
-                data: (style) => VectorTileLayer(
+              // tiles are never fetched for the default center and then
-                  tileProviders: style.providers,
+              // mass-cancelled (CancellationException crash) when the map
-                  theme: style.theme,
+              // jumps to the GPS position.
-                  concurrency: 4,
+              if (!mapState.isLocating)
-                  memoryTileCacheMaxSize: 20 * 1024 * 1024,   // 20 MB raw tiles
+                styleAsync.when(
-                  memoryTileDataCacheMaxSize: 50,              // 50 parsed tiles
+                  data: (style) => VectorTileLayer(
-                  fileCacheMaximumSizeInBytes: 50 * 1024 * 1024, // 50 MB on disk
+                    tileProviders: style.providers,
-                  cacheFolder: () => getApplicationCacheDirectory(),
+                    theme: style.theme,
+                    layerMode: VectorTileLayerMode.vector,
+                    concurrency: 4,
+                    maximumTileSubstitutionDifference: 4,
+                    memoryTileCacheMaxSize: 40 * 1024 * 1024,
+                    memoryTileDataCacheMaxSize: 100,
+                    fileCacheMaximumSizeInBytes: 150 * 1024 * 1024,
+                    cacheFolder: () => getApplicationCacheDirectory(),
+                  ),
+                  loading: () => const SizedBox.shrink(),
+                  error: (e, _) => const SizedBox.shrink(),
                 ),
-                loading: () => const SizedBox.shrink(),
-                error: (e, _) => const SizedBox.shrink(),
-              ),
               if (mapState.currentLocation != null)
                 MarkerLayer(
                   markers: [

mobile/lib/features/map/providers/map_provider.dart

@@ -70,6 +70,7 @@ class MapNotifier extends Notifier<MapState> {
   MapState build() => MapState(
         center: AppConstants.defaultCenter,
         zoom: AppConstants.defaultZoom,
+        isLocating: true,
       );
 
   void updateCamera(LatLng center, double zoom) {

mobile/lib/features/map/providers/map_style_provider.dart

@@ -1,10 +1,141 @@
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:vector_map_tiles/vector_map_tiles.dart';
+import 'package:vector_tile_renderer/vector_tile_renderer.dart';
 
-/// Loads and caches the MapLibre style from the backend.
+/// Martin URL provider — overridden in main() with the saved value.
-/// Keyed by base URL so a URL change triggers a reload.
+final martinUrlProvider = Provider<String>((ref) => 'http://localhost:3001');
+
+/// Builds a Style that fetches tiles directly from Martin.
+/// Keyed by Martin URL so a URL change triggers a reload.
 final mapStyleProvider =
-    FutureProvider.family<Style, String>((ref, baseUrl) async {
+    FutureProvider.family<Style, String>((ref, martinUrl) async {
-  final styleUrl = '$baseUrl/tiles/style.json';
+  final urlTemplate =
-  return StyleReader(uri: styleUrl).read();
+      '$martinUrl/planet_osm_polygon,planet_osm_line,planet_osm_point,planet_osm_roads/{z}/{x}/{y}';
+
+  final tileProvider = NetworkVectorTileProvider(
+    urlTemplate: urlTemplate,
+    maximumZoom: 14,
+    minimumZoom: 0,
+  );
+
+  final providers = TileProviders({
+    'osm_all': tileProvider,
+  });
+
+  final styleJson = <String, dynamic>{
+    "version": 8,
+    "name": "Privacy Maps",
+    "sources": {
+      "osm_all": {
+        "type": "vector",
+        "tiles": [urlTemplate],
+        "minzoom": 0,
+        "maxzoom": 14,
+      }
+    },
+    "layers": [
+      {
+        "id": "background",
+        "type": "background",
+        "paint": {"background-color": "#f0ebe3"}
+      },
+      {
+        "id": "landuse",
+        "type": "fill",
+        "source": "osm_all",
+        "source-layer": "planet_osm_polygon",
+        "paint": {"fill-color": "#d4e5c9", "fill-opacity": 0.6}
+      },
+      {
+        "id": "water",
+        "type": "fill",
+        "source": "osm_all",
+        "source-layer": "planet_osm_polygon",
+        "filter": ["==", "natural", "water"],
+        "paint": {"fill-color": "#a0c8f0"}
+      },
+      {
+        "id": "roads-minor",
+        "type": "line",
+        "source": "osm_all",
+        "source-layer": "planet_osm_line",
+        "paint": {"line-color": "#ccc", "line-width": 1}
+      },
+      {
+        "id": "roads-main",
+        "type": "line",
+        "source": "osm_all",
+        "source-layer": "planet_osm_roads",
+        "paint": {"line-color": "#f5a623", "line-width": 2}
+      },
+      {
+        "id": "buildings",
+        "type": "fill",
+        "source": "osm_all",
+        "source-layer": "planet_osm_polygon",
+        "filter": ["has", "building"],
+        "paint": {"fill-color": "#d9d0c7", "fill-outline-color": "#bbb"}
+      },
+      {
+        "id": "road-names",
+        "type": "symbol",
+        "source": "osm_all",
+        "source-layer": "planet_osm_line",
+        "minzoom": 13,
+        "filter": ["has", "name"],
+        "layout": {
+          "text-field": ["get", "name"],
+          "text-font": ["Noto Sans Regular", "Open Sans Regular"],
+          "text-size": 11,
+          "symbol-placement": "line",
+          "text-max-angle": 30,
+          "text-padding": 10
+        },
+        "paint": {
+          "text-color": "#444",
+          "text-halo-color": "#fff",
+          "text-halo-width": 1.5
+        }
+      },
+      {
+        "id": "place-names",
+        "type": "symbol",
+        "source": "osm_all",
+        "source-layer": "planet_osm_point",
+        "minzoom": 10,
+        "filter": [
+          "all",
+          ["has", "name"],
+          ["has", "place"]
+        ],
+        "layout": {
+          "text-field": ["get", "name"],
+          "text-font": ["Noto Sans Regular", "Open Sans Regular"],
+          "text-size": [
+            "interpolate",
+            ["linear"],
+            ["zoom"],
+            10,
+            11,
+            14,
+            14
+          ],
+          "text-anchor": "center",
+          "text-padding": 5
+        },
+        "paint": {
+          "text-color": "#333",
+          "text-halo-color": "#fff",
+          "text-halo-width": 1.5
+        }
+      }
+    ]
+  };
+
+  final theme = ThemeReader().read(styleJson);
+
+  return Style(
+    theme: theme,
+    providers: providers,
+  );
 });

mobile/lib/features/settings/presentation/screens/settings_screen.dart

@@ -51,24 +51,30 @@ class SettingsScreen extends ConsumerStatefulWidget {
 
 class _SettingsScreenState extends ConsumerState<SettingsScreen> {
   late final TextEditingController _backendUrlController;
+  late final TextEditingController _martinUrlController;
   bool _urlSaved = false;
+  bool _martinUrlSaved = false;
 
   @override
   void initState() {
     super.initState();
     _backendUrlController = TextEditingController();
-    _loadBackendUrl();
+    _martinUrlController = TextEditingController();
+    _loadUrls();
   }
 
-  Future<void> _loadBackendUrl() async {
+  Future<void> _loadUrls() async {
     final db = ref.read(appDatabaseProvider);
     final url = await db.getSetting(AppConstants.settingBackendUrl);
     _backendUrlController.text = url ?? AppConstants.defaultBackendUrl;
+    final martinUrl = await db.getSetting(AppConstants.settingMartinUrl);
+    _martinUrlController.text = martinUrl ?? AppConstants.defaultMartinUrl;
   }
 
   @override
   void dispose() {
     _backendUrlController.dispose();
+    _martinUrlController.dispose();
     super.dispose();
   }
 
@@ -117,6 +123,41 @@ class _SettingsScreenState extends ConsumerState<SettingsScreen> {
           ),
           const Divider(),
 
+          // Martin tile server URL
+          Padding(
+            padding: const EdgeInsets.all(16),
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                Text(
+                  'Tile Server (Martin)',
+                  style: Theme.of(context).textTheme.titleSmall,
+                ),
+                const SizedBox(height: 8),
+                TextField(
+                  controller: _martinUrlController,
+                  decoration: InputDecoration(
+                    labelText: 'Martin URL',
+                    hintText: AppConstants.defaultMartinUrl,
+                    suffixIcon: _martinUrlSaved
+                        ? const Icon(Icons.check, color: Colors.green)
+                        : null,
+                  ),
+                  keyboardType: TextInputType.url,
+                  onChanged: (_) {
+                    if (_martinUrlSaved) setState(() => _martinUrlSaved = false);
+                  },
+                ),
+                const SizedBox(height: 8),
+                FilledButton(
+                  onPressed: _saveMartinUrl,
+                  child: const Text('Save'),
+                ),
+              ],
+            ),
+          ),
+          const Divider(),
+
           // Theme
           Padding(
             padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
@@ -222,6 +263,24 @@ class _SettingsScreenState extends ConsumerState<SettingsScreen> {
       );
     }
   }
+
+  Future<void> _saveMartinUrl() async {
+    final url = _martinUrlController.text.trim();
+    if (url.isEmpty) return;
+
+    final db = ref.read(appDatabaseProvider);
+    await db.setSetting(AppConstants.settingMartinUrl, url);
+
+    setState(() => _martinUrlSaved = true);
+
+    if (mounted) {
+      ScaffoldMessenger.of(context).showSnackBar(
+        const SnackBar(
+          content: Text('Martin URL saved. Restart the app to apply.'),
+        ),
+      );
+    }
+  }
 }
 
 class _AttributionTile extends StatelessWidget {

mobile/lib/main.dart

@@ -4,6 +4,7 @@ import 'app/app.dart';
 import 'core/api/api_client.dart';
 import 'core/constants.dart';
 import 'core/database/app_database.dart';
+import 'features/map/providers/map_style_provider.dart';
 
 void main() async {
   WidgetsFlutterBinding.ensureInitialized();
@@ -12,12 +13,15 @@ void main() async {
   final db = AppDatabase();
   final savedUrl = await db.getSetting(AppConstants.settingBackendUrl);
   final backendUrl = savedUrl ?? AppConstants.defaultBackendUrl;
+  final savedMartinUrl = await db.getSetting(AppConstants.settingMartinUrl);
+  final martinUrl = savedMartinUrl ?? AppConstants.defaultMartinUrl;
 
   runApp(
     ProviderScope(
       overrides: [
         appDatabaseProvider.overrideWithValue(db),
         apiClientProvider.overrideWithValue(ApiClient(baseUrl: backendUrl)),
+        martinUrlProvider.overrideWithValue(martinUrl),
       ],
       child: const PrivacyMapsApp(),
     ),

mobile/pubspec.lock

@@ -1062,7 +1062,7 @@ packages:
     source: hosted
     version: "2.0.1"
   vector_tile_renderer:
-    dependency: transitive
+    dependency: "direct main"
     description:
       name: vector_tile_renderer
       sha256: "89746f1108eccbc0b6f33fbbef3fcf394cda3733fc0d5064ea03d53a459b56d3"

mobile/pubspec.yaml

@@ -32,6 +32,7 @@ dependencies:
     sdk: flutter
   flutter_map: ^7.0.0
   vector_map_tiles: ^8.0.0
+  vector_tile_renderer: ^5.2.0
   flutter_riverpod: ^3.0.0
   riverpod_annotation: ^4.0.0
   dio: ^5.4.0