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feat: Modernize map selection and tile cache

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This commit is contained in:
Janez T
2026-04-26 08:41:33 +02:00
parent b040a8bd3a
commit e1400cf1ec
12 changed files with 1985 additions and 533 deletions
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58
lib/providers/offline_tiles_provider.dart
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@@ -59,6 +59,7 @@ class OfflineTilesProvider extends ChangeNotifier {
// Drawing state
DrawingMode _drawingMode = DrawingMode.none;
DrawingMode _downloadSelectionMode = DrawingMode.none;
final List<List<LatLng>> _polygons = [];
List<LatLng> _currentVertices = [];
LatLng? _rectangleFirstCorner;
@@ -94,6 +95,7 @@ class OfflineTilesProvider extends ChangeNotifier {
// Getters
DrawingMode get drawingMode => _drawingMode;
DrawingMode get downloadSelectionMode => _downloadSelectionMode;
List<List<LatLng>> get polygons => List.unmodifiable(_polygons);
List<LatLng> get currentVertices => List.unmodifiable(_currentVertices);
LatLng? get rectangleFirstCorner => _rectangleFirstCorner;
@@ -131,6 +133,15 @@ class OfflineTilesProvider extends ChangeNotifier {
notifyListeners();
}
void startDownloadSelectionMode(DrawingMode mode) {
_polygons.clear();
_currentVertices = [];
_rectangleFirstCorner = null;
_downloadSelectionMode = mode;
_drawingMode = mode;
notifyListeners();
}
void addVertex(LatLng point) {
if (_drawingMode == DrawingMode.polygon) {
_currentVertices = [..._currentVertices, point];
@@ -181,6 +192,27 @@ class OfflineTilesProvider extends ChangeNotifier {
notifyListeners();
}
void setCurrentViewBounds({
required double north,
required double south,
required double east,
required double west,
}) {
_polygons
..clear()
..add([
LatLng(north, west),
LatLng(north, east),
LatLng(south, east),
LatLng(south, west),
]);
_currentVertices = [];
_rectangleFirstCorner = null;
_downloadSelectionMode = DrawingMode.none;
_drawingMode = DrawingMode.none;
notifyListeners();
}
void undoLastVertex() {
if (_currentVertices.isNotEmpty) {
_currentVertices = _currentVertices.sublist(0, _currentVertices.length - 1);
@@ -207,6 +239,15 @@ class OfflineTilesProvider extends ChangeNotifier {
notifyListeners();
}
void setSelectedLayerIfDifferent(MapLayer layer) {
if (_selectedLayer.type == layer.type &&
_selectedLayer.urlTemplate == layer.urlTemplate) {
return;
}
_selectedLayer = layer;
notifyListeners();
}
// Download control
Future<void> startDownload() async {
@@ -273,10 +314,12 @@ class OfflineTilesProvider extends ChangeNotifier {
case TileDownloadComplete():
_isDownloading = false;
_tileOverlays.clear();
notifyListeners();
case TileDownloadCancelled():
_isDownloading = false;
_tileOverlays.clear();
notifyListeners();
}
}
@@ -341,19 +384,12 @@ class OfflineTilesProvider extends ChangeNotifier {
_coverageOverlays = [];
notifyListeners();
final manifest = await _cache.loadManifest(style.hash);
final tiles = await _cache.listTilesForStyle(style.hash);
// Convert manifest keys to tile bound overlays
// Convert cached tile coordinates to bound overlays
final overlays = <TileOverlay>[];
for (final key in manifest) {
final parts = key.split('/');
if (parts.length != 3) continue;
final z = int.tryParse(parts[0]);
final x = int.tryParse(parts[1]);
final y = int.tryParse(parts[2]);
if (z == null || x == null || y == null) continue;
final bounds = TileMathService.tileBounds(x, y, z);
for (final tile in tiles) {
final bounds = TileMathService.tileBounds(tile.x, tile.y, tile.z);
overlays.add(TileOverlay(
north: bounds.north,
south: bounds.south,