#1382 DDM coordinate format

CHANGELOG.md

@@ -4,6 +4,10 @@ All notable changes to this project will be documented in this file.
 
 ## <a id="unreleased"></a>[Unreleased]
 
+### Added
+
+- DDM coordinate format option
+
 ### Changed
 
 - Video: use `media-kit` instead of `ffmpeg-kit` for metadata fetch

lib/l10n/app_en.arb

@@ -210,6 +210,7 @@
   "albumTierRegular": "Others",
 
   "coordinateFormatDms": "DMS",
+  "coordinateFormatDdm": "DDM",
   "coordinateFormatDecimal": "Decimal degrees",
   "coordinateDms": "{coordinate} {direction}",
   "@coordinateDms": {

lib/model/filters/coordinate.dart

@@ -60,12 +60,15 @@ class CoordinateFilter extends CollectionFilter {
 
   @override
   String getLabel(BuildContext context) {
-    return _formatBounds((latLng) => settings.coordinateFormat.format(
+    return _formatBounds((latLng) {
-          context,
+      final format = settings.coordinateFormat;
-          latLng,
+      return format.format(
-          minuteSecondPadding: minuteSecondPadding,
+        context,
-          dmsSecondDecimals: 0,
+        latLng,
-        ));
+        minuteSecondPadding: minuteSecondPadding,
+        dmsSecondDecimals: format == CoordinateFormat.ddm ? 2 : 0,
+      );
+    });
   }
 
   @override

lib/model/settings/enums/coordinate_format.dart

@@ -8,15 +8,17 @@ import 'package:latlong2/latlong.dart';
 extension ExtraCoordinateFormat on CoordinateFormat {
   static const _separator = ', ';
 
-  String format(BuildContext context, LatLng latLng, {bool minuteSecondPadding = false, int dmsSecondDecimals = 2}) {
+  String format(BuildContext context, LatLng latLng, {bool minuteSecondPadding = false, int? dmsSecondDecimals}) {
     final text = formatWithoutDirectionality(context.l10n, latLng, minuteSecondPadding: minuteSecondPadding, dmsSecondDecimals: dmsSecondDecimals);
     return context.applyDirectionality(text);
   }
 
-  String formatWithoutDirectionality(AppLocalizations l10n, LatLng latLng, {bool minuteSecondPadding = false, int dmsSecondDecimals = 2}) {
+  String formatWithoutDirectionality(AppLocalizations l10n, LatLng latLng, {bool minuteSecondPadding = false, int? dmsSecondDecimals}) {
     switch (this) {
       case CoordinateFormat.dms:
-        return toDMS(l10n, latLng, minuteSecondPadding: minuteSecondPadding, secondDecimals: dmsSecondDecimals).join(_separator);
+        return toDMS(l10n, latLng, minuteSecondPadding: minuteSecondPadding, secondDecimals: dmsSecondDecimals ?? 2).join(_separator);
+      case CoordinateFormat.ddm:
+        return toDDM(l10n, latLng, minutePadding: minuteSecondPadding, minuteDecimals: dmsSecondDecimals ?? 4).join(_separator);
       case CoordinateFormat.decimal:
         return _toDecimal(l10n, latLng).join(_separator);
     }
@@ -35,6 +37,19 @@ extension ExtraCoordinateFormat on CoordinateFormat {
     ];
   }
 
+  // returns coordinates formatted as DDM, e.g. ['41° 24.2028′ N', '2° 10.4418′ E']
+  static List<String> toDDM(AppLocalizations l10n, LatLng latLng, {bool minutePadding = false, int minuteDecimals = 4}) {
+    final locale = l10n.localeName;
+    final lat = latLng.latitude;
+    final lng = latLng.longitude;
+    final latSexa = _decimal2ddm(lat, minutePadding, minuteDecimals, locale);
+    final lngSexa = _decimal2ddm(lng, minutePadding, minuteDecimals, locale);
+    return [
+      l10n.coordinateDms(latSexa, lat < 0 ? l10n.coordinateDmsSouth : l10n.coordinateDmsNorth),
+      l10n.coordinateDms(lngSexa, lng < 0 ? l10n.coordinateDmsWest : l10n.coordinateDmsEast),
+    ];
+  }
+
   static String _decimal2sexagesimal(
     double degDecimal,
     bool minuteSecondPadding,
@@ -54,6 +69,22 @@ extension ExtraCoordinateFormat on CoordinateFormat {
     return '$degText° $minText′ $secText″';
   }
 
+  static String _decimal2ddm(
+    double degDecimal,
+    bool minutePadding,
+    int minuteDecimals,
+    String locale,
+  ) {
+    final degAbs = degDecimal.abs();
+    final deg = degAbs.toInt();
+    final min = (degAbs - deg) * 60;
+
+    final degText = NumberFormat('0', locale).format(deg);
+    final minText = NumberFormat('${'0' * (minutePadding ? 2 : 1)}${minuteDecimals > 0 ? '.${'0' * minuteDecimals}' : ''}', locale).format(min);
+
+    return '$degText° $minText′';
+  }
+
   static List<String> _toDecimal(AppLocalizations l10n, LatLng latLng) {
     final coordinateFormatter = NumberFormat('0.000000°', l10n.localeName);
     return [

lib/view/src/settings/enums.dart

@@ -45,6 +45,7 @@ extension ExtraCoordinateFormatView on CoordinateFormat {
     final l10n = context.l10n;
     return switch (this) {
       CoordinateFormat.dms => l10n.coordinateFormatDms,
+      CoordinateFormat.ddm => l10n.coordinateFormatDdm,
       CoordinateFormat.decimal => l10n.coordinateFormatDecimal,
     };
   }

plugins/aves_model/lib/src/settings/enums.dart

@@ -8,7 +8,7 @@ enum AvesThemeColorMode { monochrome, polychrome }
 
 enum ConfirmationDialog { createVault, deleteForever, moveToBin, moveUndatedItems }
 
-enum CoordinateFormat { dms, decimal }
+enum CoordinateFormat { dms, ddm, decimal }
 
 enum DisplayRefreshRateMode { auto, highest, lowest }
 

plugins/aves_video_mpv/lib/src/controller.dart

@@ -162,6 +162,12 @@ class MpvVideoController extends AvesVideoController {
   Future<void> _init({int startMillis = 0}) async {
     final playing = _instance.state.playing;
 
+    // Audio quality is better with `audiotrack` than `opensles` (the default).
+    // Calling `setAudioDevice` does not seem to work.
+    // As of 2025/01/13, directly setting audio output via property works for some files but not all,
+    // and switching from a supported file to an unsupported file crashes:
+    // cf https://github.com/media-kit/media-kit/issues/1061
+
     await _applyLoop();
     await _instance.open(Media(entry.uri), play: playing);
     await _instance.setSubtitleTrack(SubtitleTrack.no());

test/utils/geo_utils_test.dart

@@ -18,6 +18,18 @@ void main() {
     expect(ExtraCoordinateFormat.toDMS(l10n, const LatLng(0, 0), secondDecimals: 4), ['0° 0′ 0.0000″ N', '0° 0′ 0.0000″ E']);
   });
 
+  test('Decimal degrees to DDM', () {
+    final l10n = lookupAppLocalizations(AvesApp.supportedLocales.first);
+    expect(ExtraCoordinateFormat.toDDM(l10n, const LatLng(37.496667, 127.0275)), ['37° 29.8000′ N', '127° 1.6500′ E']); // Gangnam
+    expect(ExtraCoordinateFormat.toDDM(l10n, const LatLng(78.9243503, 11.9230465)), ['78° 55.4610′ N', '11° 55.3828′ E']); // Ny-Ålesund
+    expect(ExtraCoordinateFormat.toDDM(l10n, const LatLng(-38.6965891, 175.9830047)), ['38° 41.7953′ S', '175° 58.9803′ E']); // Taupo
+    expect(ExtraCoordinateFormat.toDDM(l10n, const LatLng(-64.249391, -56.6556145)), ['64° 14.9635′ S', '56° 39.3369′ W']); // Marambio
+    expect(ExtraCoordinateFormat.toDDM(l10n, const LatLng(0, 0)), ['0° 0.0000′ N', '0° 0.0000′ E']);
+    expect(ExtraCoordinateFormat.toDDM(l10n, const LatLng(0, 0), minutePadding: true), ['0° 00.0000′ N', '0° 00.0000′ E']);
+    expect(ExtraCoordinateFormat.toDDM(l10n, const LatLng(0, 0), minuteDecimals: 0), ['0° 0′ N', '0° 0′ E']);
+    expect(ExtraCoordinateFormat.toDDM(l10n, const LatLng(0, 0), minuteDecimals: 6), ['0° 0.000000′ N', '0° 0.000000′ E']);
+  });
+
   test('bounds center', () {
     expect(GeoUtils.getLatLngCenter(const [LatLng(10, 30), LatLng(30, 50)]), const LatLng(20.28236664671092, 39.351653000319956));
     expect(GeoUtils.getLatLngCenter(const [LatLng(10, -179), LatLng(30, 179)]), const LatLng(20.00279344048298, -179.9358157370226));