Terepbejárás: geometriák hosszának és területének számítása és jelzése

lib/pages/map_survey/presentations/controllers/map_survey_controller.dart

@@ -21,6 +21,8 @@ import 'package:share_plus/share_plus.dart';
 import 'package:supabase_flutter/supabase_flutter.dart';
 import 'package:terepi_seged/controls/geoid_grid.dart';
 import 'package:terepi_seged/controls/wgs84_coordinate_formatter.dart';
+import 'package:terepi_seged/core/geometry_measure.dart';
+import 'package:terepi_seged/core/geometry_measure_formatter.dart';
 import 'package:terepi_seged/enums/map_edit_tool.dart';
 import 'package:terepi_seged/enums/map_survey_mode.dart';
 import 'package:terepi_seged/enums/note_type.dart';
@@ -194,6 +196,26 @@ class MapSurveyController extends GetxController {
   final selectedNoteItemType = NoteType.line.obs;
   int? _editingNoteItemId;
   bool get isGeometryEditing => _editingNoteItemId != null;
+  final draftLengthMeters = 0.0.obs;
+  final draftAreaSquareMeters = 0.0.obs;
+
+  String get draftMeasureText {
+    switch (activeEditTool.value) {
+      case MapEditTool.line:
+        return GeometryMeasureFormatter.length(
+          draftLengthMeters.value,
+        );
+
+      case MapEditTool.polygon:
+        return GeometryMeasureFormatter.area(
+          draftAreaSquareMeters.value,
+        );
+
+      case MapEditTool.point:
+      case MapEditTool.none:
+        return '';
+    }
+  }
 
   // NoteItem? get selectedPoint =>
   //     pointNotes.firstWhereOrNull((n) => n.id == selectedNoteItemId.value);
@@ -233,6 +255,7 @@ class MapSurveyController extends GetxController {
         PolygonEditorController(mode: PolygonEditorMode.polygon);
     polygonEditorController.addListener(() {
       editorPointCount.value = polygonEditorController.points.length;
+      _updateDraftMeasurements();
     });
     await _setInitialPositionFromPhone();
 
@@ -1064,18 +1087,21 @@ class MapSurveyController extends GetxController {
 
   void startPointTool() {
     activeEditTool.value = MapEditTool.point;
+    activeEditLabel.value = '';
   }
 
   void startLineTool() {
     polygonEditorController.clear();
     polygonEditorController.setMode(PolygonEditorMode.line);
     activeEditTool.value = MapEditTool.line;
+    activeEditLabel.value = '';
   }
 
   void startPolygonTool() {
     polygonEditorController.clear();
     polygonEditorController.setMode(PolygonEditorMode.polygon);
     activeEditTool.value = MapEditTool.polygon;
+    activeEditLabel.value = '';
   }
 
   void cancelEditing() {
@@ -1084,14 +1110,8 @@ class MapSurveyController extends GetxController {
     _editingNoteItemId = null;
     selectedNoteItemId.value = null;
     editorPointCount.value = 0;
-  }
-
-  void openFeatureList() {
-    // TODO: DraggableScrollableSheet / bottom sheet lista
-  }
-
-  void openLayerPanel() {
-    // TODO: rétegek sheet
+    draftAreaSquareMeters.value = 0.0;
+    draftLengthMeters.value = 0.0;
   }
 
   void finishGeometry() {
@@ -1252,6 +1272,8 @@ class MapSurveyController extends GetxController {
     await updateNoteItem(updated);
     _editingNoteItemId = null;
     activeEditTool.value = MapEditTool.none;
+    draftAreaSquareMeters.value = 0.0;
+    draftLengthMeters.value = 0.0;
   }
 
   Future<void> deleteEditingItem() async {
@@ -1262,6 +1284,8 @@ class MapSurveyController extends GetxController {
     _editingNoteItemId = null;
     selectedNoteItemId.value = null;
     activeEditTool.value = MapEditTool.none;
+    draftAreaSquareMeters.value = 0.0;
+    draftLengthMeters.value = 0.0;
   }
 
   // Future<void> finishDraft() async {
@@ -1518,6 +1542,8 @@ class MapSurveyController extends GetxController {
     polygonEditorController.clear();
     activeEditTool.value = MapEditTool.none;
     editorPointCount.value = 0;
+    draftAreaSquareMeters.value = 0.0;
+    draftLengthMeters.value = 0.0;
 
     Get.snackbar(
       'Geometria frissítve',
@@ -1540,6 +1566,9 @@ class MapSurveyController extends GetxController {
       }
       polygonEditorController.clear();
       activeEditTool.value = MapEditTool.none;
+      draftAreaSquareMeters.value = 0.0;
+      draftLengthMeters.value = 0.0;
+      activeEditLabel.value = '';
     }
 
     if (polygonEditorController.mode == PolygonEditorMode.polygon) {
@@ -1554,6 +1583,8 @@ class MapSurveyController extends GetxController {
       }
       polygonEditorController.clear();
       activeEditTool.value = MapEditTool.none;
+      draftAreaSquareMeters.value = 0.0;
+      draftLengthMeters.value = 0.0;
     }
   }
 
@@ -1561,4 +1592,35 @@ class MapSurveyController extends GetxController {
     if (polygonEditorController.mode == PolygonEditorMode.line) return 2;
     return 3; // polygon
   }
+
+  void _updateDraftMeasurements() {
+    switch (activeEditTool.value) {
+      case MapEditTool.line:
+        final points = List<LatLng>.from(
+          polygonEditorController.points,
+        );
+
+        draftLengthMeters.value = GeometryMeasure.lineLengthMeters(points);
+
+        draftAreaSquareMeters.value = 0.0;
+        break;
+
+      case MapEditTool.polygon:
+        final points = List<LatLng>.from(
+          polygonEditorController.points,
+        );
+
+        draftLengthMeters.value = GeometryMeasure.lineLengthMeters(points);
+
+        draftAreaSquareMeters.value =
+            GeometryMeasure.polygonAreaSquareMeters(points);
+        break;
+
+      case MapEditTool.point:
+      case MapEditTool.none:
+        draftLengthMeters.value = 0.0;
+        draftAreaSquareMeters.value = 0.0;
+        break;
+    }
+  }
 }