Added support for null values in FMTCTileProvider.storeNames to e…

…xempt stores from `otherStoresStrategy`

example/lib/src/screens/main/map_view/components/download_progress/components/greyscale_masker.dart

@@ -133,10 +133,10 @@ class _GreyscaleMaskerRenderer extends RenderProxyBox {
   /// very difficult to percieve with the eye, this is acceptable, and improves
   /// performance drastically. The ideal amount is calculated and rounded to the
   /// nearest level.
-  static const _greyscaleLevelsCount = 25;
   final Map<int, Path> _greyscalePathCache = Map.unmodifiable({
     for (int i = 0; i <= _greyscaleLevelsCount; i++) i: Path(),
   });
+  static const _greyscaleLevelsCount = 25;
 
   @override
   void dispose() {
@@ -430,7 +430,7 @@ class _GreyscaleMaskerRenderer extends RenderProxyBox {
 
 /// See [_GreyscaleMaskerRenderer._tileMapping] for documentation
 ///
-/// Is immutable to improve performance.
+/// Is mutable to improve performance.
 class _TileMappingValue {
   _TileMappingValue.newTile({
     required this.nwCoord,

example/lib/src/screens/main/map_view/map_view.dart

@@ -1,6 +1,9 @@
+import 'dart:async';
 import 'dart:io';
 import 'dart:math';
 
+import 'package:collection/collection.dart';
+import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_map/flutter_map.dart';
 import 'package:flutter_map_animations/flutter_map_animations.dart';
@@ -62,7 +65,7 @@ class _MapViewState extends State<MapView> with TickerProviderStateMixin {
               .then((e) => e[StoreMetadataKeys.urlTemplate.key]),
       };
     },
-  );
+  ).distinct(mapEquals);
 
   final _testingCoordsList = [
     //TileCoordinates(2212, 1468, 12),
@@ -336,21 +339,22 @@ class _MapViewState extends State<MapView> with TickerProviderStateMixin {
           builder: (context, provider, _) {
             final urlTemplate = provider.urlTemplate;
 
-            final compiledStoreNames = Map.fromEntries(
-              stores.entries
-                  .where((e) => e.value == urlTemplate)
-                  .map((e) => e.key)
-                  .map((e) {
-                final internalBehaviour = provider.currentStores[e];
+            final compiledStoreNames =
+                Map<String, BrowseStoreStrategy?>.fromEntries([
+              ...stores.entries.where((e) => e.value == urlTemplate).map((e) {
+                final internalBehaviour = provider.currentStores[e.key];
                 final behaviour = internalBehaviour == null
                     ? provider.inheritableBrowseStoreStrategy
                     : internalBehaviour.toBrowseStoreStrategy(
                         provider.inheritableBrowseStoreStrategy,
                       );
                 if (behaviour == null) return null;
-                return MapEntry(e, behaviour);
+                return MapEntry(e.key, behaviour);
               }).nonNulls,
-            );
+              ...stores.entries
+                  .where((e) => e.value != urlTemplate)
+                  .map((e) => MapEntry(e.key, null)),
+            ]);
 
             final attribution = RichAttributionWidget(
               alignment: AttributionAlignment.bottomLeft,
@@ -435,21 +439,6 @@ class _MapViewState extends State<MapView> with TickerProviderStateMixin {
                   ),
                 PolygonLayer(
                   polygons: [
-                    Polygon(
-                      points: [
-                        LatLng(-90, 180),
-                        LatLng(90, 180),
-                        LatLng(90, -180),
-                        LatLng(-90, -180),
-                      ],
-                      holePointsList: [
-                        const CircleRegion(
-                          LatLng(45.3052535669648, 14.476223064038985),
-                          6,
-                        ).toOutline().toList(growable: false),
-                      ],
-                      color: Colors.black,
-                    ),
                     Polygon(
                       points: [
                         LatLng(-90, 180),

example/lib/src/screens/old/configure_download/components/start_download_button.dart

@@ -6,8 +6,8 @@ import 'package:flutter_map_tile_caching/flutter_map_tile_caching.dart';
 import 'package:provider/provider.dart';
 
 import '../../../../shared/misc/store_metadata_keys.dart';
-import '../../download/download.dart';
 import '../../../../shared/state/download_configuration_provider.dart';
+import '../../download/download.dart';
 
 class StartDownloadButton extends StatelessWidget {
   const StartDownloadButton({

lib/src/providers/image_provider/internal_get_bytes.dart

@@ -207,6 +207,7 @@ Future<Uint8List> _internalGetBytes({
   final writeTileToSpecified = provider.storeNames.entries
       .where(
         (e) => switch (e.value) {
+          null => false,
           BrowseStoreStrategy.read => false,
           BrowseStoreStrategy.readUpdate =>
             intersectedExistingStores.contains(e.key),

lib/src/providers/tile_provider/tile_provider.dart

@@ -80,10 +80,9 @@ class FMTCTileProvider extends TileProvider {
   ///
   /// Stores not included will not be used by default. However,
   /// [otherStoresStrategy] determines whether & how all other unspecified
-  /// stores should be used.
-  ///
-  // TODO: Accept null values to exempt from [otherStoresStrategy]
-  final Map<String, BrowseStoreStrategy> storeNames;
+  /// stores should be used. Stores included but with a `null` value will be
+  /// exempt from [otherStoresStrategy].
+  final Map<String, BrowseStoreStrategy?> storeNames;
 
   /// The behaviour of all other stores not specified in [storeNames]
   ///
@@ -95,6 +94,9 @@ class FMTCTileProvider extends TileProvider {
   /// Also see [useOtherStoresAsFallbackOnly] for whether these unspecified
   /// stores should only be used as a last resort or in addition to the specified
   /// stores as normal.
+  ///
+  /// Stores specified in [storeNames] but associated with a `null` value will
+  /// not not gain this behaviour.
   final BrowseStoreStrategy? otherStoresStrategy;
 
   /// Determines whether the network or cache is preferred during browse