Rilascia strumenti avanzati e archivio 0.3.0

Components/Pages/Home.razor

@@ -4,14 +4,16 @@
 @inject CadastralCatalogService CatalogService
 @inject OfficialCadastreService OfficialCadastreService
 @inject LocationSearchService LocationSearchService
+@inject NetworkLocationService NetworkLocationService
 @inject AzureMapsService AzureMapsService
 @inject ProjectStorageService ProjectStorageService
+@inject MapExportService MapExportService
 @implements IAsyncDisposable
 
 <PageTitle>LME Mappe Catastali</PageTitle>
 
 <div class="map-app">
-    <section class="map-stage">
+    <section class="map-stage @(ActiveTab == "search" ? "search-active" : null)">
         <div id="map"></div>
 
         <header class="map-toolbar">
@@ -56,8 +58,29 @@
                         </span>
                     </label>
                 }
+                <label class="map-layer-option">
+                    <input type="checkbox" @bind="ShowSelectedParcels" @bind:after="ApplySelectedParcelsVisibility" />
+                    <span>
+                        <strong>Particelle catastali evidenziate</strong>
+                        <small>Contorni rossi ottenuti da ricerca o GPS</small>
+                    </span>
+                </label>
+                <label class="map-layer-option">
+                    <input type="checkbox" @bind="ShowImportedData" @bind:after="ApplyImportedDataVisibility" />
+                    <span>
+                        <strong>Dati importati</strong>
+                        <small>Particelle e geometrie verdi di file e progetti</small>
+                    </span>
+                </label>
+                <section class="layer-tree-section">
+                    <header>
+                        <strong>Ordine livelli e oggetti</strong>
+                        <small>Trascina dall'alto verso il basso</small>
+                    </header>
+                    <div id="layerManagerTree" class="layer-manager-tree"></div>
+                </section>
                 <div class="layer-panel-actions">
-                    <button class="secondary-command" @onclick="ClearSelectedParcels">Rimuovi particelle selezionate</button>
+                    <button class="danger-command" @onclick="ClearSelectedParcels">Elimina definitivamente le particelle selezionate</button>
                     <button class="danger-command" @onclick="ClearMapElements">Pulisci elementi mappa</button>
                 </div>
             </section>
@@ -72,16 +95,6 @@
             <button class="gps-center" @onclick="CenterOnGps" aria-label="Centra posizione">Centra</button>
         </div>
 
-        @if ((ActiveTab is "map" or "search") && !LayerPanelOpen)
-        {
-            <div class="map-measure-tools @(ActiveTab == "search" ? "search-open" : null)" aria-label="Strumenti rapidi di misura">
-                <span>Misura</span>
-                <button title="Disegna e misura un'area" @onclick='() => StartMeasurementDrawing("area")'>Area</button>
-                <button title="Disegna e misura una distanza" @onclick='() => StartMeasurementDrawing("distance")'>Distanza</button>
-                <button title="Disegna e misura un cerchio" @onclick='() => StartMeasurementDrawing("circle")'>Cerchio</button>
-            </div>
-        }
-
         @if (ActiveTab is not "map" and not "search")
         {
             <aside class="tool-sheet">
@@ -169,7 +182,7 @@
                                 <input id="gisFileInput" type="file" accept=".kml,.kmz,.geojson,.json,application/vnd.google-earth.kml+xml,application/vnd.google-earth.kmz,application/geo+json" />
                             </label>
                             <label class="toggle-line project-save-option">
-                                <input type="checkbox" checked="@IncludeKmlSheetLayer" @onchange="ToggleKmlSheetLayer" />
+                                <input type="checkbox" @bind="IncludeKmlSheetLayer" @bind:after="ApplyKmlSheetLayerOption" />
                                 <span>KML/KMZ: includi anche il layer del foglio</span>
                             </label>
                             <small class="field-help">
@@ -178,7 +191,16 @@
                                     : "Disattivato: importa solo i poligoni delle particelle riconosciute.")
                             </small>
                             <label class="toggle-line project-save-option">
-                                <input type="checkbox" checked="@ShowImportedMeasurements" @onchange="ToggleImportedMeasurements" />
+                                <input type="checkbox" @bind="ShowImportedData" @bind:after="ApplyImportedDataVisibility" />
+                                <span>Mostra particelle/dati importati in verde</span>
+                            </label>
+                            <label class="toggle-line project-save-option">
+                                <input type="checkbox" @bind="ShowImportedSheetLayer" @bind:after="ApplyImportedSheetLayerVisibility" />
+                                <span>Mostra cornice/layer del foglio importato</span>
+                            </label>
+                            <small class="field-help">La cornice grande resta separata dalle particelle e puo essere nascosta anche nei progetti salvati.</small>
+                            <label class="toggle-line project-save-option">
+                                <input type="checkbox" @bind="ShowImportedMeasurements" @bind:after="ApplyImportedMeasurementsVisibility" />
                                 <span>Mostra misure dei file caricati</span>
                             </label>
                             <div class="button-row">
@@ -189,14 +211,19 @@
 
                         <section class="panel-section">
                             <h2>Disegni e misure</h2>
+                            <div class="button-row">
+                                <button class="secondary-command" @onclick="UndoMapChange">Annulla</button>
+                                <button class="secondary-command" @onclick="RedoMapChange">Ripristina</button>
+                            </div>
                             <label class="toggle-line project-save-option">
-                                <input type="checkbox" checked="@ShowDrawingMeasurements" @onchange="ToggleDrawingMeasurements" />
+                                <input type="checkbox" @bind="ShowDrawingMeasurements" @bind:after="ApplyDrawingMeasurementsVisibility" />
                                 <span>Mostra superficie, perimetro e lati</span>
                             </label>
                             <button class="secondary-command" aria-pressed="@DrawToolsVisible" @onclick="ToggleDrawTools">
-                                @(DrawToolsVisible ? "Nascondi barra completa" : "Mostra barra completa")
+                                @(DrawToolsVisible ? "Nascondi strumenti sulla mappa" : "Mostra strumenti sulla mappa")
                             </button>
                             <button class="danger-command" @onclick="ClearDrawings">Elimina disegni e POI</button>
+                            <button class="secondary-command" @onclick="RestoreAutosave">Recupera ultimo autosalvataggio</button>
                         </section>
 
                         <section class="panel-section">
@@ -209,6 +236,63 @@
                         </section>
                     </section>
                 }
+                else if (ActiveTab == "save")
+                {
+                    <section class="panel-content">
+                        <section class="panel-section">
+                            <h2>Esporta contenuto mappa</h2>
+                            <label>
+                                Nome file
+                                <input @bind="ExportFileName" @bind:event="oninput" placeholder="Es. Rilievo San Nicola" maxlength="80" />
+                            </label>
+                            <label>
+                                Formato
+                                <select @bind="ExportFormat">
+                                    <option value="geojson">GeoJSON</option>
+                                    <option value="kml">KML</option>
+                                    <option value="kmz">KMZ compresso</option>
+                                    <option value="gpx">GPX per GPS</option>
+                                    <option value="pdf">Rapporto PDF</option>
+                                </select>
+                            </label>
+                            <div class="export-options" role="group" aria-label="Oggetti da esportare">
+                                <label class="toggle-line project-save-option">
+                                    <input type="checkbox" @bind="ExportSelectedOnly" @bind:after="SaveFlagPreferences" />
+                                    <span>Solo oggetti selezionati nel pannello Layer</span>
+                                </label>
+                                <label class="toggle-line project-save-option">
+                                    <input type="checkbox" @bind="ExportImported" @bind:after="SaveFlagPreferences" />
+                                    <span>Particelle e dati GIS importati</span>
+                                </label>
+                                <label class="toggle-line project-save-option">
+                                    <input type="checkbox" @bind="ExportImportedSheets" @bind:after="SaveFlagPreferences" />
+                                    <span>Cornici, fogli e riquadri KMZ</span>
+                                </label>
+                                <label class="toggle-line project-save-option">
+                                    <input type="checkbox" @bind="ExportCadastral" @bind:after="SaveFlagPreferences" />
+                                    <span>Particelle catastali rosse e GPS</span>
+                                </label>
+                                <label class="toggle-line project-save-option">
+                                    <input type="checkbox" @bind="ExportDrawings" @bind:after="SaveFlagPreferences" />
+                                    <span>Disegni, aree, linee e cerchi</span>
+                                </label>
+                                <label class="toggle-line project-save-option">
+                                    <input type="checkbox" @bind="ExportPoi" @bind:after="SaveFlagPreferences" />
+                                    <span>Punti di interesse</span>
+                                </label>
+                                <label class="toggle-line project-save-option">
+                                    <input type="checkbox" @bind="ExportTrail" @bind:after="SaveFlagPreferences" />
+                                    <span>Traccia GPS registrata</span>
+                                </label>
+                            </div>
+                            <button class="primary-command" @onclick="ExportMapFile" disabled="@(ExportBusy || string.IsNullOrWhiteSpace(ExportFileName))">
+                                @(ExportBusy ? "Preparazione file..." : "Esporta e salva file")
+                            </button>
+                            <small class="field-help">KML e KMZ sono compatibili con Google Earth. Gli sfondi satellitari e il WMS non vengono incorporati nel file vettoriale.</small>
+                        </section>
+
+                    </section>
+                }
                 else if (ActiveTab == "projects")
                 {
                     <section class="panel-content">
@@ -219,7 +303,7 @@
                                 <input @bind="NewProjectName" @bind:event="oninput" placeholder="Es. Rilievo San Nicola" maxlength="80" />
                             </label>
                             <label class="toggle-line project-save-option">
-                                <input type="checkbox" @bind="IncludeCadastralParcels" />
+                                <input type="checkbox" @bind="IncludeCadastralParcels" @bind:after="SaveFlagPreferences" />
                                 <span>Includi le particelle catastali rosse</span>
                             </label>
                             <button class="primary-command" @onclick="SaveProject" disabled="@(ProjectBusy || string.IsNullOrWhiteSpace(NewProjectName))">Salva progetto</button>
@@ -233,7 +317,7 @@
                                     <option value="">Seleziona un progetto</option>
                                     @foreach (var project in Projects)
                                     {
-                                        <option value="@project.Id">@project.Name - @project.UpdatedAt.ToLocalTime().ToString("dd/MM/yyyy HH:mm")</option>
+                                        <option value="@project.Id">@(project.IsArchived ? "[ARCHIVIATO] " : "")@(string.IsNullOrWhiteSpace(project.Folder) ? "" : $"{project.Folder} / ")@project.Name - @project.UpdatedAt.ToLocalTime().ToString("dd/MM/yyyy HH:mm")</option>
                                     }
                                 </select>
                             </label>
@@ -241,8 +325,64 @@
                                 <button @onclick="LoadProject" disabled="@(ProjectBusy || string.IsNullOrWhiteSpace(SelectedProjectId))">Apri</button>
                                 <button class="danger-command" @onclick="DeleteProject" disabled="@(ProjectBusy || string.IsNullOrWhiteSpace(SelectedProjectId))">Elimina</button>
                             </div>
+                            <label>
+                                Cartella
+                                <input @bind="ProjectFolder" placeholder="Es. Cantieri 2026" maxlength="60" />
+                            </label>
+                            <div class="button-row">
+                                <button class="secondary-command" @onclick="UpdateProjectFolder" disabled="@(ProjectBusy || string.IsNullOrWhiteSpace(SelectedProjectId))">Sposta</button>
+                                <button class="secondary-command" @onclick="DuplicateProject" disabled="@(ProjectBusy || string.IsNullOrWhiteSpace(SelectedProjectId))">Duplica</button>
+                            </div>
+                            <div class="button-row">
+                                <button class="secondary-command" @onclick="ToggleProjectArchive" disabled="@(ProjectBusy || string.IsNullOrWhiteSpace(SelectedProjectId))">@(SelectedProject?.IsArchived == true ? "Ripristina" : "Archivia")</button>
+                                <button class="secondary-command" @onclick="ShareProject" disabled="@(ProjectBusy || string.IsNullOrWhiteSpace(SelectedProjectId))">Condividi</button>
+                            </div>
+                            <label>
+                                Revisione precedente
+                                <select @bind="SelectedVersionId" disabled="@(ProjectVersions.Count == 0)">
+                                    <option value="">Seleziona revisione</option>
+                                    @foreach (var version in ProjectVersions)
+                                    {
+                                        <option value="@version.Id">@version.UpdatedAt.ToLocalTime().ToString("dd/MM/yyyy HH:mm:ss")</option>
+                                    }
+                                </select>
+                            </label>
+                            <div class="button-row">
+                                <button class="secondary-command" @onclick="LoadProjectVersion" disabled="@(string.IsNullOrWhiteSpace(SelectedVersionId))">Apri revisione</button>
+                                <button class="secondary-command" @onclick="CompareProjectVersion" disabled="@(string.IsNullOrWhiteSpace(SelectedVersionId))">Confronta</button>
+                            </div>
                             <div class="project-archive-state">@ProjectArchiveMessage</div>
                         </section>
+
+                        <section class="panel-section">
+                            <h2>Backup e trasferimento</h2>
+                            <div class="button-row">
+                                <button class="secondary-command" @onclick="ShareFullBackup">Crea backup</button>
+                                <button class="secondary-command" @onclick="RestoreBackup">Ripristina backup</button>
+                            </div>
+                            <button class="secondary-command" @onclick="ImportProject">Importa progetto condiviso</button>
+                        </section>
+
+                        <section class="panel-section">
+                            <h2>Visualizzazione progetto</h2>
+                            <label class="toggle-line project-save-option">
+                                <input type="checkbox" @bind="ShowImportedData" @bind:after="ApplyImportedDataVisibility" />
+                                <span>Mostra particelle/dati importati in verde</span>
+                            </label>
+                            <label class="toggle-line project-save-option">
+                                <input type="checkbox" @bind="ShowImportedSheetLayer" @bind:after="ApplyImportedSheetLayerVisibility" />
+                                <span>Mostra cornice/layer del foglio importato</span>
+                            </label>
+                            <small class="field-help">Il comando agisce subito sulla mappa e sui dati del progetto caricato.</small>
+                            <label class="toggle-line project-save-option">
+                                <input type="checkbox" @bind="ShowImportedMeasurements" @bind:after="ApplyImportedMeasurementsVisibility" />
+                                <span>Mostra misure dei file caricati</span>
+                            </label>
+                            <label class="toggle-line project-save-option">
+                                <input type="checkbox" @bind="ShowDrawingMeasurements" @bind:after="ApplyDrawingMeasurementsVisibility" />
+                                <span>Mostra misure dei disegni</span>
+                            </label>
+                        </section>
                     </section>
                 }
                 else if (ActiveTab == "settings")
@@ -259,6 +399,7 @@
                                     <option value="topographic">Topografica - Esri World Topographic</option>
                                     <option value="terrain">Terreno - OpenTopoMap</option>
                                     <option value="carto">Strade chiare - CARTO Voyager</option>
+                                    <option value="offline">Offline - solo dati vettoriali</option>
                                     <option value="azure-road">Strade - Azure Maps</option>
                                     <option value="azure-satellite">Satellite - Azure Maps</option>
                                     <option value="google-satellite">Satellite - Google Maps</option>
@@ -267,7 +408,7 @@
                             </label>
                             <label>
                                 Trasparenza catasto
-                                <input type="range" min="0" max="1" step="0.05" value="0.75" @onchange="ChangeCadastreOpacity" />
+                                <input type="range" min="0" max="1" step="0.05" value="@CadastralOpacity.ToString(System.Globalization.CultureInfo.InvariantCulture)" @onchange="ChangeCadastreOpacity" />
                             </label>
                         </section>
 
@@ -289,12 +430,41 @@
                             </div>
                         </section>
 
+                        <section class="panel-section">
+                            <h2>Modifica e sicurezza dati</h2>
+                            <label class="toggle-line project-save-option">
+                                <input type="checkbox" @bind="AutoSaveEnabled" @bind:after="ApplyAdvancedOptions" />
+                                <span>Autosalvataggio locale dopo ogni modifica</span>
+                            </label>
+                            <label class="toggle-line project-save-option">
+                                <input type="checkbox" @bind="SnapEnabled" @bind:after="ApplyAdvancedOptions" />
+                                <span>Aggancia i vertici agli oggetti vicini</span>
+                            </label>
+                            <label>
+                                Distanza aggancio in pixel
+                                <input type="range" min="4" max="40" step="1" @bind="SnapDistancePixels" @bind:after="ApplyAdvancedOptions" />
+                            </label>
+                        </section>
+
                         <section class="panel-section">
                             <h2>GPS e percorso</h2>
                             <label class="toggle-line project-save-option">
-                                <input type="checkbox" checked="@TrailEnabled" @onchange="ToggleTrail" />
+                                <input type="checkbox" @bind="ShowGpsPosition" @bind:after="ApplyGpsPositionVisibility" />
+                                <span>Mostra punto e cerchio GPS</span>
+                            </label>
+                            <label class="toggle-line project-save-option">
+                                <input type="checkbox" @bind="TrailEnabled" @bind:after="ApplyTrailOption" />
                                 <span>Registra la traccia mentre cammini</span>
                             </label>
+                            <label class="toggle-line project-save-option">
+                                <input type="checkbox" @bind="GpsProximityEnabled" @bind:after="ApplyAdvancedOptions" />
+                                <span>Distanza e direzione dal bordo selezionato</span>
+                            </label>
+                            <label class="toggle-line project-save-option">
+                                <input type="checkbox" @bind="GpsBoundaryAlertEnabled" @bind:after="ApplyAdvancedOptions" />
+                                <span>Avvisa quando entro o esco dall'area selezionata</span>
+                            </label>
+                            <button class="secondary-command" @onclick="SaveGpsMeasurementPoint">Salva punto GPS con precisione e ora</button>
                         </section>
 
                         <section class="panel-section">
@@ -339,18 +509,24 @@
             <button class="@(ActiveTab == "cadastre" ? "active" : null)" @onclick='() => SelectTab("cadastre")'>Catasto</button>
             <button class="@(ActiveTab == "data" ? "active" : null)" @onclick='() => SelectTab("data")'>Dati</button>
             <button class="@(ActiveTab == "projects" ? "active" : null)" @onclick='() => SelectTab("projects")'>Progetti</button>
+            <button class="@(ActiveTab == "save" ? "active" : null)" @onclick='() => SelectTab("save")'>Salvataggio</button>
             <button class="@(ActiveTab == "settings" ? "active" : null)" @onclick='() => SelectTab("settings")'>Impostazioni</button>
         </nav>
     </section>
 </div>
 
 @code {
+    private const string FlagPreferencePrefix = "lme_flag_";
     private string ActiveTab { get; set; } = "map";
     private string SearchText { get; set; } = string.Empty;
     private string NewProjectName { get; set; } = string.Empty;
+    private string ExportFileName { get; set; } = "Mappa";
+    private string ExportFormat { get; set; } = "geojson";
     private string PoiName { get; set; } = string.Empty;
     private string SelectedProjectId { get; set; } = string.Empty;
     private string ProjectArchiveMessage { get; set; } = "Nessun progetto salvato.";
+    private string ProjectFolder { get; set; } = string.Empty;
+    private string SelectedVersionId { get; set; } = string.Empty;
     private string Status { get; set; } = "online";
     private string SelectedBaseLayer { get; set; } = "satellite";
     private string GoogleMapsApiKey { get; set; } = string.Empty;
@@ -361,16 +537,35 @@
     private string SelectedParcelNumber { get; set; } = string.Empty;
     private string CatalogMessage { get; set; } = string.Empty;
     private double? CatalogFraction { get; set; }
+    private double CadastralOpacity { get; set; } = 0.75;
     private bool CatalogBusy { get; set; }
     private bool GpsActive { get; set; }
+    private bool ShowGpsPosition { get; set; } = true;
+    private bool ShowSelectedParcels { get; set; } = true;
+    private bool ShowImportedData { get; set; } = true;
     private bool DrawToolsVisible { get; set; }
     private bool TrailEnabled { get; set; }
     private bool LayerPanelOpen { get; set; }
+    private DotNetObjectReference<Home>? MapCallbackReference { get; set; }
     private bool IncludeCadastralParcels { get; set; } = true;
     private bool IncludeKmlSheetLayer { get; set; }
+    private bool ShowImportedSheetLayer { get; set; }
     private bool ShowImportedMeasurements { get; set; }
     private bool ShowDrawingMeasurements { get; set; } = true;
     private bool ProjectBusy { get; set; }
+    private bool ExportBusy { get; set; }
+    private bool ExportImported { get; set; } = true;
+    private bool ExportImportedSheets { get; set; } = true;
+    private bool ExportCadastral { get; set; } = true;
+    private bool ExportDrawings { get; set; } = true;
+    private bool ExportPoi { get; set; } = true;
+    private bool ExportTrail { get; set; } = true;
+    private bool ExportSelectedOnly { get; set; }
+    private bool AutoSaveEnabled { get; set; } = true;
+    private bool SnapEnabled { get; set; } = true;
+    private int SnapDistancePixels { get; set; } = 14;
+    private bool GpsProximityEnabled { get; set; } = true;
+    private bool GpsBoundaryAlertEnabled { get; set; }
     private CancellationTokenSource? CatalogCancellation { get; set; }
     private CancellationTokenSource? GpsLookupCancellation { get; set; }
     private long LastGpsLookupAt;
@@ -381,6 +576,8 @@
     private IReadOnlyList<string> Sheets { get; set; } = [];
     private IReadOnlyList<ParcelOption> Parcels { get; set; } = [];
     private IReadOnlyList<MapProjectSummary> Projects { get; set; } = [];
+    private IReadOnlyList<MapProjectVersion> ProjectVersions { get; set; } = [];
+    private MapProjectSummary? SelectedProject => Projects.FirstOrDefault(item => item.Id == SelectedProjectId);
 
     private MunicipalityOption? SelectedMunicipality =>
         Municipalities.FirstOrDefault(item => item.Code == SelectedMunicipalityCode);
@@ -393,6 +590,7 @@
         "cadastre" => "Ricerca catastale",
         "data" => "Dati e disegni",
         "projects" => "Archivio progetti",
+        "save" => "Salvataggio ed esportazione",
         "settings" => "Impostazioni",
         _ => string.Empty
     };
@@ -401,7 +599,8 @@
     {
         "cadastre" => "Regione, Comune, Foglio, Particella",
         "data" => "File GIS, misure e POI",
-        "projects" => "Salva e apri i tuoi lavori",
+        "projects" => "Salva, apri e visualizza i tuoi lavori",
+        "save" => "Esporta file GIS",
         "settings" => "Mappa, GPS e servizi ufficiali",
         _ => string.Empty
     };
@@ -418,6 +617,8 @@
 
     protected override async Task OnInitializedAsync()
     {
+        LoadFlagPreferences();
+
         try
         {
             GoogleMapsApiKey = await SecureStorage.Default.GetAsync("google_maps_api_key") ?? string.Empty;
@@ -452,11 +653,104 @@
     {
         if (firstRender)
         {
-            await JS.InvokeVoidAsync("lmeMap.init");
+            MapCallbackReference = DotNetObjectReference.Create(this);
+            await JS.InvokeVoidAsync("lmeMap.init", MapCallbackReference);
+            await ApplyFlagPreferencesToMapAsync();
+            await ApplyAdvancedOptions();
+            await CenterOnInitialLocationAsync();
             await MigrateLegacyProjectAsync();
         }
     }
 
+    private async Task ConfigureProjectMapProviderAsync(string snapshot)
+    {
+        string? baseLayer = null;
+        try
+        {
+            using var document = System.Text.Json.JsonDocument.Parse(snapshot);
+            if (document.RootElement.TryGetProperty("displayOptions", out var displayOptions)
+                && displayOptions.TryGetProperty("baseLayer", out var baseLayerProperty))
+            {
+                baseLayer = baseLayerProperty.GetString();
+            }
+        }
+        catch
+        {
+            return;
+        }
+
+        try
+        {
+            if (baseLayer?.StartsWith("google-", StringComparison.Ordinal) == true
+                && !string.IsNullOrWhiteSpace(GoogleMapsApiKey))
+            {
+                await JS.InvokeVoidAsync("lmeMap.configureGoogleMaps", GoogleMapsApiKey.Trim());
+            }
+
+            if (baseLayer?.StartsWith("azure-", StringComparison.Ordinal) == true
+                && !string.IsNullOrWhiteSpace(AzureMapsSubscriptionKey))
+            {
+                await JS.InvokeVoidAsync("lmeMap.configureAzureMaps", AzureMapsSubscriptionKey.Trim());
+            }
+        }
+        catch
+        {
+            // Loading continues with the default map if the saved provider is unavailable.
+        }
+    }
+
+    private async Task CenterOnInitialLocationAsync()
+    {
+        NetworkLocationSnapshot? networkLocation = null;
+        try
+        {
+            using var networkTimeout = new CancellationTokenSource(TimeSpan.FromSeconds(8));
+            networkLocation = await NetworkLocationService.GetApproximateLocationAsync(networkTimeout.Token);
+        }
+        catch
+        {
+            // An unavailable IP service must not prevent the GPS fallback.
+        }
+
+        if (networkLocation is not null)
+        {
+            await JS.InvokeVoidAsync(
+                "lmeMap.showInitialPosition",
+                networkLocation.Latitude,
+                networkLocation.Longitude,
+                true,
+                networkLocation.Label);
+            return;
+        }
+
+        try
+        {
+            using var gpsTimeout = new CancellationTokenSource(TimeSpan.FromSeconds(18));
+            var location = await LocationService.GetCurrentLocationAsync(gpsTimeout.Token);
+            if (location is not null)
+            {
+                await JS.InvokeVoidAsync(
+                    "lmeMap.showInitialPosition",
+                    location.Latitude,
+                    location.Longitude,
+                    false,
+                    string.Empty);
+            }
+            else
+            {
+                await JS.InvokeVoidAsync("lmeMap.showInfo", "Posizione iniziale non disponibile. La mappa resta utilizzabile normalmente.");
+            }
+        }
+        catch (OperationCanceledException)
+        {
+            await JS.InvokeVoidAsync("lmeMap.showInfo", "Posizione iniziale non disponibile. Usa Avvia GPS per riprovare.");
+        }
+        catch (Exception error)
+        {
+            await JS.InvokeVoidAsync("lmeMap.showInfo", $"Posizione iniziale non disponibile: {error.GetBaseException().Message}");
+        }
+    }
+
     private async Task MigrateLegacyProjectAsync()
     {
         try
@@ -495,11 +789,19 @@
         }
         await Task.Delay(30);
         await JS.InvokeVoidAsync("lmeMap.resize");
+        if (LayerPanelOpen)
+        {
+            await JS.InvokeVoidAsync("lmeMap.refreshLayerManager");
+        }
     }
 
     private async Task ToggleLayerPanel()
     {
         LayerPanelOpen = !LayerPanelOpen;
+        if (!LayerPanelOpen)
+        {
+            await JS.InvokeVoidAsync("lmeMap.clearLayerManagerSelection");
+        }
         if (LayerPanelOpen)
         {
             ActiveTab = "map";
@@ -507,6 +809,10 @@
 
         await Task.Delay(30);
         await JS.InvokeVoidAsync("lmeMap.resize");
+        if (LayerPanelOpen)
+        {
+            await JS.InvokeVoidAsync("lmeMap.refreshLayerManager");
+        }
     }
 
     private async Task SearchLocation()
@@ -680,6 +986,12 @@
         }
     }
 
+    private async Task ApplyGpsPositionVisibility()
+    {
+        SaveFlagPreferences();
+        await JS.InvokeVoidAsync("lmeMap.setGpsPositionVisible", ShowGpsPosition);
+    }
+
     private async Task StartGps()
     {
         GpsActive = true;
@@ -786,41 +1098,59 @@
     }
 
     private Task FitImportedLayers() => JS.InvokeVoidAsync("lmeMap.fitImported").AsTask();
-    private Task ClearImportedLayers() => JS.InvokeVoidAsync("lmeMap.clearImported").AsTask();
+    private async Task ClearImportedLayers()
+    {
+        ShowImportedSheetLayer = false;
+        SaveFlagPreferences();
+        await JS.InvokeVoidAsync("lmeMap.clearImported");
+    }
     private Task AddProjectMarker() => JS.InvokeVoidAsync("lmeMap.addProjectMarker", PoiName).AsTask();
 
-    private async Task ToggleKmlSheetLayer(ChangeEventArgs args)
+    private async Task ApplyKmlSheetLayerOption()
     {
-        IncludeKmlSheetLayer = (bool?)args.Value == true;
+        ShowImportedSheetLayer = IncludeKmlSheetLayer;
+        SaveFlagPreferences();
         await JS.InvokeVoidAsync("lmeMap.setIncludeKmlSheetLayer", IncludeKmlSheetLayer);
+        await JS.InvokeVoidAsync("lmeMap.setImportedSheetLayerVisible", ShowImportedSheetLayer);
     }
 
-    private async Task ToggleImportedMeasurements(ChangeEventArgs args)
+    private Task ApplyImportedSheetLayerVisibility()
     {
-        ShowImportedMeasurements = (bool?)args.Value == true;
+        SaveFlagPreferences();
+        return JS.InvokeVoidAsync("lmeMap.setImportedSheetLayerVisible", ShowImportedSheetLayer).AsTask();
+    }
+
+    private async Task ApplyImportedMeasurementsVisibility()
+    {
+        SaveFlagPreferences();
         await JS.InvokeVoidAsync("lmeMap.setImportedMeasurementsVisible", ShowImportedMeasurements);
     }
 
-    private async Task ToggleDrawingMeasurements(ChangeEventArgs args)
+    private async Task ApplyDrawingMeasurementsVisibility()
     {
-        ShowDrawingMeasurements = (bool?)args.Value == true;
+        SaveFlagPreferences();
         await JS.InvokeVoidAsync("lmeMap.setDrawingMeasurementsVisible", ShowDrawingMeasurements);
     }
 
-    private async Task StartMeasurementDrawing(string mode)
+    [JSInvokable]
+    public Task SetMeasurementsFromLayerManager(string category, bool enabled)
     {
-        DrawToolsVisible = false;
+        if (category == "imported")
-        await JS.InvokeVoidAsync("lmeMap.setDrawToolsVisible", false);
+        {
-        ActiveTab = "map";
+            ShowImportedMeasurements = enabled;
-        LayerPanelOpen = false;
+        }
-        await Task.Delay(30);
+        else if (category == "drawings")
-        await JS.InvokeVoidAsync("lmeMap.resize");
+        {
-        await JS.InvokeVoidAsync("lmeMap.startMeasurementDrawing", mode);
+            ShowDrawingMeasurements = enabled;
+        }
+        SaveFlagPreferences();
+        return InvokeAsync(StateHasChanged);
     }
 
     private async Task ToggleDrawTools()
     {
         DrawToolsVisible = !DrawToolsVisible;
+        SaveFlagPreferences();
         await JS.InvokeVoidAsync("lmeMap.setDrawToolsVisible", DrawToolsVisible);
 
         if (DrawToolsVisible)
@@ -850,10 +1180,147 @@
         }
     }
 
-    private Task SelectProject(ChangeEventArgs args)
+    private async Task SelectProject(ChangeEventArgs args)
     {
         SelectedProjectId = args.Value?.ToString() ?? string.Empty;
-        return Task.CompletedTask;
+        ProjectFolder = SelectedProject?.Folder ?? string.Empty;
+        SelectedVersionId = string.Empty;
+        ProjectVersions = string.IsNullOrWhiteSpace(SelectedProjectId)
+            ? []
+            : await ProjectStorageService.GetVersionsAsync(SelectedProjectId);
+    }
+
+    private Task UndoMapChange() => JS.InvokeVoidAsync("lmeMap.undoMapChange").AsTask();
+    private Task RedoMapChange() => JS.InvokeVoidAsync("lmeMap.redoMapChange").AsTask();
+    private Task RestoreAutosave() => JS.InvokeVoidAsync("lmeMap.restoreAutosave").AsTask();
+    private Task SaveGpsMeasurementPoint() => JS.InvokeVoidAsync("lmeMap.saveGpsMeasurementPoint").AsTask();
+
+    private async Task DuplicateProject()
+    {
+        if (SelectedProject is null) return;
+        var copy = await ProjectStorageService.DuplicateAsync(SelectedProject.Id);
+        await RefreshProjectsAsync();
+        SelectedProjectId = copy.Id;
+        ProjectFolder = copy.Folder;
+        await JS.InvokeVoidAsync("lmeMap.showInfo", $"Progetto duplicato: {copy.Name}.");
+    }
+
+    private async Task UpdateProjectFolder()
+    {
+        if (SelectedProject is null) return;
+        await ProjectStorageService.UpdateOrganizationAsync(SelectedProject.Id, ProjectFolder);
+        await RefreshProjectsAsync();
+        await JS.InvokeVoidAsync("lmeMap.showInfo", "Cartella del progetto aggiornata.");
+    }
+
+    private async Task ToggleProjectArchive()
+    {
+        if (SelectedProject is not { } project) return;
+        await ProjectStorageService.UpdateOrganizationAsync(project.Id, isArchived: !project.IsArchived);
+        await RefreshProjectsAsync();
+        await JS.InvokeVoidAsync("lmeMap.showInfo", project.IsArchived ? "Progetto ripristinato." : "Progetto archiviato.");
+    }
+
+    private async Task ShareProject()
+    {
+        if (SelectedProject is null) return;
+        var path = await ProjectStorageService.CreateProjectPackageAsync(SelectedProject.Id);
+        await Share.Default.RequestAsync(new ShareFileRequest { Title = "Condividi progetto LME", File = new ShareFile(path, "application/json") });
+    }
+
+    private async Task ShareFullBackup()
+    {
+        var path = await ProjectStorageService.CreateBackupAsync();
+        await Share.Default.RequestAsync(new ShareFileRequest { Title = "Backup completo LME Mappe Catastali", File = new ShareFile(path, "application/zip") });
+    }
+
+    private async Task RestoreBackup()
+    {
+        var file = await FilePicker.Default.PickAsync(new PickOptions { PickerTitle = "Scegli backup LME" });
+        if (file is null) return;
+        var path = await CopyPickedFileToCacheAsync(file);
+        var count = await ProjectStorageService.RestoreBackupAsync(path);
+        await RefreshProjectsAsync();
+        await JS.InvokeVoidAsync("lmeMap.showInfo", $"Backup ripristinato: {count} progetti disponibili.");
+    }
+
+    private async Task ImportProject()
+    {
+        var file = await FilePicker.Default.PickAsync(new PickOptions { PickerTitle = "Scegli progetto LME" });
+        if (file is null) return;
+        var path = await CopyPickedFileToCacheAsync(file);
+        var imported = await ProjectStorageService.ImportProjectAsync(path);
+        await RefreshProjectsAsync();
+        SelectedProjectId = imported.Id;
+        await JS.InvokeVoidAsync("lmeMap.showInfo", $"Progetto importato: {imported.Name}.");
+    }
+
+    private static async Task<string> CopyPickedFileToCacheAsync(FileResult file)
+    {
+        var path = Path.Combine(FileSystem.CacheDirectory, $"{Guid.NewGuid():N}-{file.FileName}");
+        await using var input = await file.OpenReadAsync();
+        await using var output = File.Create(path);
+        await input.CopyToAsync(output);
+        return path;
+    }
+
+    private async Task LoadProjectVersion()
+    {
+        if (SelectedProject is null || string.IsNullOrWhiteSpace(SelectedVersionId)) return;
+        var snapshot = await ProjectStorageService.LoadVersionAsync(SelectedProject.Id, SelectedVersionId);
+        var options = await JS.InvokeAsync<ProjectDisplayOptions>("lmeMap.loadProjectSnapshot", snapshot, $"{SelectedProject.Name} - revisione");
+        ApplyProjectDisplayOptions(options);
+        ActiveTab = "map";
+    }
+
+    private async Task CompareProjectVersion()
+    {
+        if (SelectedProject is null || string.IsNullOrWhiteSpace(SelectedVersionId)) return;
+        var current = await ProjectStorageService.LoadAsync(SelectedProject.Id);
+        var previous = await ProjectStorageService.LoadVersionAsync(SelectedProject.Id, SelectedVersionId);
+        ProjectArchiveMessage = await JS.InvokeAsync<string>("lmeMap.compareProjectSnapshots", current, previous);
+    }
+
+    private async Task ExportMapFile()
+    {
+        if (!ExportImported && !ExportImportedSheets && !ExportCadastral
+            && !ExportDrawings && !ExportPoi && !ExportTrail)
+        {
+            await JS.InvokeVoidAsync("lmeMap.showInfo", "Seleziona almeno un tipo di oggetto da esportare.");
+            return;
+        }
+
+        ExportBusy = true;
+        try
+        {
+            var geoJson = await JS.InvokeAsync<string>("lmeMap.createMapExportGeoJson", new
+            {
+                includeImported = ExportImported,
+                includeImportedSheets = ExportImportedSheets,
+                includeCadastral = ExportCadastral,
+                includeDrawings = ExportDrawings,
+                includePoi = ExportPoi,
+                includeTrail = ExportTrail,
+                selectedOnly = ExportSelectedOnly
+            });
+            var exported = await MapExportService.CreateAsync(ExportFileName, ExportFormat, geoJson);
+            await Share.Default.RequestAsync(new ShareFileRequest
+            {
+                Title = $"Salva o condividi {exported.FileName}",
+                File = new ShareFile(exported.Path, exported.MimeType)
+            });
+            await JS.InvokeVoidAsync(
+                "lmeMap.showInfo",
+                $"File {exported.FileName} pronto: {exported.FeatureCount} oggetti esportati.");
+        }
+        catch (Exception error)
+        {
+            await JS.InvokeVoidAsync("lmeMap.showInfo", $"Esportazione non riuscita: {error.GetBaseException().Message}");
+        }
+        finally
+        {
+            ExportBusy = false;
+        }
     }
 
     private async Task SaveProject()
@@ -914,8 +1381,11 @@
         try
         {
             var snapshot = await ProjectStorageService.LoadAsync(project.Id);
-            await JS.InvokeVoidAsync("lmeMap.loadProjectSnapshot", snapshot, project.Name);
+            await ConfigureProjectMapProviderAsync(snapshot);
+            var displayOptions = await JS.InvokeAsync<ProjectDisplayOptions>("lmeMap.loadProjectSnapshot", snapshot, project.Name);
+            ApplyProjectDisplayOptions(displayOptions);
             NewProjectName = project.Name;
+            ExportFileName = project.Name;
             IncludeCadastralParcels = project.IncludesCadastralParcels;
             ActiveTab = "map";
             await Task.Delay(30);
@@ -931,6 +1401,28 @@
         }
     }
 
+    private void ApplyProjectDisplayOptions(ProjectDisplayOptions options)
+    {
+        SelectedBaseLayer = options.BaseLayer;
+        CadastralOpacity = options.CadastreOpacity;
+        IncludeKmlSheetLayer = options.IncludeKmlSheetLayer;
+        ShowImportedData = options.ImportedVisible;
+        ShowImportedSheetLayer = options.ImportedSheetsVisible;
+        ShowImportedMeasurements = options.ShowImportedMeasurements;
+        ShowDrawingMeasurements = options.ShowDrawingMeasurements;
+        DrawToolsVisible = options.DrawToolsVisible;
+        ShowGpsPosition = options.GpsPositionVisible;
+        ShowSelectedParcels = options.SelectedParcelsVisible;
+        TrailEnabled = options.TrailEnabled;
+
+        var activeLayers = (options.CadastreLayers ?? []).ToHashSet(StringComparer.Ordinal);
+        foreach (var layer in CadastralLayers)
+        {
+            layer.Enabled = activeLayers.Contains(layer.Key);
+        }
+        SaveFlagPreferences();
+    }
+
     private async Task DeleteProject()
     {
         var project = Projects.FirstOrDefault(item => item.Id == SelectedProjectId);
@@ -961,9 +1453,9 @@
         }
     }
     private Task CenterOnGps() => JS.InvokeVoidAsync("lmeMap.centerOnGps").AsTask();
-    private async Task ToggleTrail(ChangeEventArgs args)
+    private async Task ApplyTrailOption()
     {
-        TrailEnabled = (bool?)args.Value == true;
+        SaveFlagPreferences();
         await JS.InvokeVoidAsync("lmeMap.toggleTrail", TrailEnabled);
     }
     private async Task ChangeBaseLayer(ChangeEventArgs args)
@@ -1052,14 +1544,137 @@
             await JS.InvokeVoidAsync("lmeMap.showInfo", $"Chiave Azure Maps non salvata: {error.GetBaseException().Message}");
         }
     }
-    private Task ChangeCadastreOpacity(ChangeEventArgs args) => JS.InvokeVoidAsync("lmeMap.setCadastreOpacity", args.Value?.ToString()).AsTask();
+    private async Task ChangeCadastreOpacity(ChangeEventArgs args)
+    {
+        var text = args.Value?.ToString();
+        if (!double.TryParse(text, System.Globalization.NumberStyles.Float, System.Globalization.CultureInfo.InvariantCulture, out var value)
+            && !double.TryParse(text, out value))
+        {
+            return;
+        }
+
+        CadastralOpacity = Math.Clamp(value, 0, 1);
+        await JS.InvokeVoidAsync("lmeMap.setCadastreOpacity", CadastralOpacity);
+    }
 
     private async Task ToggleCadastreLayer(CadastralLayer layer, ChangeEventArgs args)
     {
         layer.Enabled = args.Value is true;
+        SaveFlagPreferences();
         await JS.InvokeVoidAsync("lmeMap.toggleCadastreLayer", layer.Key, layer.Enabled);
     }
 
+    private void LoadFlagPreferences()
+    {
+        IncludeCadastralParcels = GetFlagPreference("include_cadastral_parcels", true);
+        IncludeKmlSheetLayer = GetFlagPreference("include_kml_sheet_layer", false);
+        ShowImportedData = GetFlagPreference("show_imported_data", true);
+        ShowImportedSheetLayer = GetFlagPreference("show_imported_sheet_layer", false);
+        ShowImportedMeasurements = GetFlagPreference("show_imported_measurements", false);
+        ShowDrawingMeasurements = GetFlagPreference("show_drawing_measurements", true);
+        DrawToolsVisible = GetFlagPreference("draw_tools_visible", false);
+        ShowGpsPosition = GetFlagPreference("show_gps_position", true);
+        ShowSelectedParcels = GetFlagPreference("show_selected_parcels", true);
+        TrailEnabled = GetFlagPreference("trail_enabled", false);
+        ExportImported = GetFlagPreference("export_imported", true);
+        ExportImportedSheets = GetFlagPreference("export_imported_sheets", true);
+        ExportCadastral = GetFlagPreference("export_cadastral", true);
+        ExportDrawings = GetFlagPreference("export_drawings", true);
+        ExportPoi = GetFlagPreference("export_poi", true);
+        ExportTrail = GetFlagPreference("export_trail", true);
+        ExportSelectedOnly = GetFlagPreference("export_selected_only", false);
+        AutoSaveEnabled = GetFlagPreference("auto_save", true);
+        SnapEnabled = GetFlagPreference("snap_enabled", true);
+        SnapDistancePixels = Preferences.Default.Get($"{FlagPreferencePrefix}snap_distance", 14);
+        GpsProximityEnabled = GetFlagPreference("gps_proximity", true);
+        GpsBoundaryAlertEnabled = GetFlagPreference("gps_boundary_alert", false);
+
+        foreach (var layer in CadastralLayers)
+        {
+            layer.Enabled = GetFlagPreference($"cadastre_layer_{layer.Key}", layer.Enabled);
+        }
+    }
+
+    private void SaveFlagPreferences()
+    {
+        SetFlagPreference("include_cadastral_parcels", IncludeCadastralParcels);
+        SetFlagPreference("include_kml_sheet_layer", IncludeKmlSheetLayer);
+        SetFlagPreference("show_imported_data", ShowImportedData);
+        SetFlagPreference("show_imported_sheet_layer", ShowImportedSheetLayer);
+        SetFlagPreference("show_imported_measurements", ShowImportedMeasurements);
+        SetFlagPreference("show_drawing_measurements", ShowDrawingMeasurements);
+        SetFlagPreference("draw_tools_visible", DrawToolsVisible);
+        SetFlagPreference("show_gps_position", ShowGpsPosition);
+        SetFlagPreference("show_selected_parcels", ShowSelectedParcels);
+        SetFlagPreference("trail_enabled", TrailEnabled);
+        SetFlagPreference("export_imported", ExportImported);
+        SetFlagPreference("export_imported_sheets", ExportImportedSheets);
+        SetFlagPreference("export_cadastral", ExportCadastral);
+        SetFlagPreference("export_drawings", ExportDrawings);
+        SetFlagPreference("export_poi", ExportPoi);
+        SetFlagPreference("export_trail", ExportTrail);
+        SetFlagPreference("export_selected_only", ExportSelectedOnly);
+        SetFlagPreference("auto_save", AutoSaveEnabled);
+        SetFlagPreference("snap_enabled", SnapEnabled);
+        Preferences.Default.Set($"{FlagPreferencePrefix}snap_distance", SnapDistancePixels);
+        SetFlagPreference("gps_proximity", GpsProximityEnabled);
+        SetFlagPreference("gps_boundary_alert", GpsBoundaryAlertEnabled);
+
+        foreach (var layer in CadastralLayers)
+        {
+            SetFlagPreference($"cadastre_layer_{layer.Key}", layer.Enabled);
+        }
+    }
+
+    private async Task ApplyFlagPreferencesToMapAsync()
+    {
+        await JS.InvokeVoidAsync("lmeMap.setIncludeKmlSheetLayer", IncludeKmlSheetLayer);
+        await JS.InvokeVoidAsync("lmeMap.setImportedLayerVisible", ShowImportedData);
+        await JS.InvokeVoidAsync("lmeMap.setImportedSheetLayerVisible", ShowImportedSheetLayer);
+        await JS.InvokeVoidAsync("lmeMap.setImportedMeasurementsVisible", ShowImportedMeasurements);
+        await JS.InvokeVoidAsync("lmeMap.setDrawingMeasurementsVisible", ShowDrawingMeasurements);
+        await JS.InvokeVoidAsync("lmeMap.setDrawToolsVisible", DrawToolsVisible);
+        await JS.InvokeVoidAsync("lmeMap.setGpsPositionVisible", ShowGpsPosition);
+        await JS.InvokeVoidAsync("lmeMap.setSelectedParcelsVisible", ShowSelectedParcels);
+        await JS.InvokeVoidAsync("lmeMap.toggleTrail", TrailEnabled);
+
+        foreach (var layer in CadastralLayers)
+        {
+            await JS.InvokeVoidAsync("lmeMap.toggleCadastreLayer", layer.Key, layer.Enabled);
+        }
+    }
+
+    private async Task ApplyAdvancedOptions()
+    {
+        SaveFlagPreferences();
+        await JS.InvokeVoidAsync("lmeMap.setAdvancedOptions", new
+        {
+            autoSaveEnabled = AutoSaveEnabled,
+            snapEnabled = SnapEnabled,
+            snapDistancePixels = SnapDistancePixels,
+            gpsProximityEnabled = GpsProximityEnabled,
+            gpsBoundaryAlertEnabled = GpsBoundaryAlertEnabled
+        });
+    }
+
+    private static bool GetFlagPreference(string name, bool defaultValue) =>
+        Preferences.Default.Get($"{FlagPreferencePrefix}{name}", defaultValue);
+
+    private static void SetFlagPreference(string name, bool value) =>
+        Preferences.Default.Set($"{FlagPreferencePrefix}{name}", value);
+
+    private async Task ApplySelectedParcelsVisibility()
+    {
+        SaveFlagPreferences();
+        await JS.InvokeVoidAsync("lmeMap.setSelectedParcelsVisible", ShowSelectedParcels);
+    }
+
+    private async Task ApplyImportedDataVisibility()
+    {
+        SaveFlagPreferences();
+        await JS.InvokeVoidAsync("lmeMap.setImportedLayerVisible", ShowImportedData);
+    }
+
     private async Task ExportCadastralImage()
     {
         ActiveTab = "map";
@@ -1087,12 +1702,29 @@
         public string Detail { get; } = detail;
     }
 
+    private sealed class ProjectDisplayOptions
+    {
+        public string BaseLayer { get; init; } = "satellite";
+        public double CadastreOpacity { get; init; } = 0.75;
+        public string[] CadastreLayers { get; init; } = [];
+        public bool IncludeKmlSheetLayer { get; init; }
+        public bool ImportedVisible { get; init; } = true;
+        public bool ImportedSheetsVisible { get; init; }
+        public bool ShowImportedMeasurements { get; init; }
+        public bool ShowDrawingMeasurements { get; init; } = true;
+        public bool DrawToolsVisible { get; init; }
+        public bool GpsPositionVisible { get; init; } = true;
+        public bool SelectedParcelsVisible { get; init; } = true;
+        public bool TrailEnabled { get; init; }
+    }
+
     public ValueTask DisposeAsync()
     {
         CancelCatalogWork();
         LocationService.StopTracking();
         GpsLookupCancellation?.Cancel();
         GpsLookupCancellation?.Dispose();
+        MapCallbackReference?.Dispose();
         return ValueTask.CompletedTask;
     }
 }

LMEMappeCatastaliApp.csproj

@@ -28,8 +28,8 @@
         <ApplicationId>com.companyname.lmemappecatastaliapp</ApplicationId>
 
         <!-- Versions -->
-        <ApplicationDisplayVersion>0.2.9</ApplicationDisplayVersion>
+        <ApplicationDisplayVersion>0.3.0</ApplicationDisplayVersion>
-        <ApplicationVersion>13</ApplicationVersion>
+        <ApplicationVersion>34</ApplicationVersion>
 
         <!-- To develop, package, and publish an app to the Microsoft Store, see: https://aka.ms/MauiTemplateUnpackaged -->
         <WindowsPackageType>None</WindowsPackageType>
@@ -44,7 +44,7 @@
 
     <ItemGroup>
         <!-- App Icon -->
-        <MauiIcon Include="Resources\AppIcon\appicon.svg" ForegroundFile="Resources\AppIcon\appiconfg.svg" Color="#512BD4" />
+        <MauiIcon Include="Resources\AppIcon\appicon.svg" ForegroundFile="Resources\AppIcon\appiconfg.svg" Color="#075E54" />
 
         <!-- Splash Screen -->
         <MauiSplashScreen Include="Resources\Splash\splash.svg" Color="#512BD4" BaseSize="128,128" />

MauiProgram.cs

@@ -20,8 +20,10 @@ public static class MauiProgram
         builder.Services.AddSingleton<CadastralCatalogService>();
         builder.Services.AddSingleton<OfficialCadastreService>();
         builder.Services.AddSingleton<LocationSearchService>();
+        builder.Services.AddSingleton<NetworkLocationService>();
         builder.Services.AddSingleton<AzureMapsService>();
         builder.Services.AddSingleton<ProjectStorageService>();
+        builder.Services.AddSingleton<MapExportService>();
 
 #if DEBUG
         builder.Services.AddBlazorWebViewDeveloperTools();

README.md

@@ -10,25 +10,29 @@ App .NET MAUI Blazor Hybrid per Android, iOS, Mac Catalyst e Windows, pensata pe
 - Interrogazione WMS con click/tap sulla mappa.
 - Import di file KML, KMZ, GeoJSON e JSON.
 - Import GeoJSON compatibile con BOM, geometrie singole, array, FeatureCollection e coordinate Web Mercator EPSG:3857.
-- Filtro KML/KMZ `solo particelle` attivo per impostazione predefinita, con separazione dei MultiPolygon ed esclusione di GroundOverlay e perimetri del foglio; il layer foglio resta importabile tramite opzione.
+- Filtro KML/KMZ `solo particelle` attivo per impostazione predefinita, con separazione dei MultiPolygon ed esclusione di GroundOverlay e perimetri del foglio; il layer foglio resta importabile e puo essere mostrato o nascosto separatamente.
+- Migrazione automatica dei vecchi progetti: i GroundOverlay `DOC_...` salvati in precedenza insieme alle particelle vengono riconosciuti, separati e nascosti in tempo reale dal relativo check.
 - Inquadramento e pulizia dei layer importati.
 - Disegno di marker, linee, poligoni e rettangoli.
-- Modalita rapide Area, Distanza e Cerchio disponibili direttamente sulla mappa, con superficie, perimetro, raggio, circonferenza e lunghezza dei singoli lati.
+- Area, Distanza e Cerchio disponibili nella barra Leaflet laterale, nascosta all'avvio e controllata dal pulsante nel tab Dati insieme agli altri strumenti.
 - Misure permanenti attivabili anche sui layer importati da KML, KMZ e GeoJSON.
 - Toolbar di disegno completa di icone, modifica, eliminazione singola e pulizia di tutti i disegni/POI.
 - Archivio multiprogetto nella cartella privata dell'app, con nome, selezione da elenco, sovrascrittura ed eliminazione.
-- Ogni progetto salva file GIS, POI, disegni, traccia e inquadratura; l'inclusione delle particelle catastali rosse e' opzionale.
+- Tab distinti `Progetti` e `Salvataggio`: il primo gestisce archivio e opzioni live di visualizzazione, il secondo esporta selettivamente l'intera mappa in GeoJSON, KML o KMZ.
+- Ogni progetto salva file GIS, POI, disegni, traccia, inquadratura e tutte le opzioni di visualizzazione: sfondo, layer catastali, trasparenza, misure, foglio importato, barra strumenti e preferenze GPS.
 - GPS nativo MAUI ad alta precisione con permessi Android/iOS.
+- Centratura automatica una tantum all'apertura: prima tramite posizione approssimativa della connessione Internet, poi tramite singola lettura GPS se la rete non restituisce una posizione; nessun punto o cerchio viene mostrato e il tracking continuo non viene avviato.
+- Punto e cerchio di precisione del GPS live possono essere mostrati o nascosti dalle impostazioni senza fermare il rilevamento.
 - Marker posizione, cerchio accuratezza in metri, tracciamento percorso.
 - Controllo se la posizione GPS cade dentro un poligono importato o disegnato.
 - Interrogazione WFS ufficiale Agenzia delle Entrate attorno alla posizione GPS per evidenziare la particella catastale corrente quando il servizio restituisce la geometria.
-- Mappa a tutto schermo con tab separati Catasto, Dati, Progetti e Impostazioni, adattabile agli schermi pieghevoli.
+- Mappa a tutto schermo con tab separati Catasto, Dati, Salvataggio e Impostazioni, adattabile agli schermi pieghevoli.
 - Ingrandimento oltre lo zoom satellitare nativo senza tessere "Map data not yet available".
 - Tendine concatenate Regione, Comune, Foglio e Particella.
 - Ricerca di localita e indirizzi eseguita nativamente con fallback Esri e OpenStreetMap, senza richieste CORS dalla WebView.
 - Catalogo dei Comuni incluso nell'APK e cataloghi regionali OnData scaricati in cache solo quando servono.
 - Ricerca catastale eseguita dal codice .NET nativo, senza DuckDB WebAssembly nella WebView Android.
-- La registrazione della traccia GPS e' disattivata all'avvio; la toolbar di disegno puo' essere mostrata o nascosta dal tab Progetti.
+- La registrazione della traccia GPS e' disattivata all'avvio; la toolbar di disegno completa puo' essere mostrata o nascosta dal tab Dati.
 - Pannello `Layer` accessibile direttamente dalla mappa, con checkbox sincronizzati per confini, numeri particella, fogli, fabbricati, strade e acque.
 - Le particelle cercate possono essere aggiunte una dopo l'altra, mantenendo contemporaneamente sulla mappa tutti i confini selezionati.
 - Comandi separati per rimuovere le particelle selezionate o pulire importazioni, disegni, POI e traccia GPS.

Resources/AppIcon/appicon.svg

@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<?xml version="1.0" encoding="UTF-8"?>
-<svg width="456" height="456" viewBox="0 0 456 456" version="1.1" xmlns="http://www.w3.org/2000/svg">
+<svg width="456" height="456" viewBox="0 0 456 456" xmlns="http://www.w3.org/2000/svg">
-    <rect x="0" y="0" width="456" height="456" fill="#512BD4" />
+    <rect width="456" height="456" fill="#075E54" />
-</svg>
+</svg>

Resources/AppIcon/appiconfg.svg

@@ -1,8 +1,13 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<svg width="456" height="456" viewBox="0 0 456 456" xmlns="http://www.w3.org/2000/svg">
-<svg width="456" height="456" viewBox="0 0 456 456" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve" xmlns:serif="http://www.serif.com/" style="fill-rule:evenodd;clip-rule:evenodd;stroke-linejoin:round;stroke-miterlimit:2;">
+    <g stroke-linecap="round" stroke-linejoin="round">
-    <path d="m 105.50037,281.60863 c -2.70293,0 -5.00091,-0.90042 -6.893127,-2.70209 -1.892214,-1.84778 -2.837901,-4.04181 -2.837901,-6.58209 0,-2.58722 0.945687,-4.80389 2.837901,-6.65167 1.892217,-1.84778 4.190197,-2.77167 6.893127,-2.77167 2.74819,0 5.06798,0.92389 6.96019,2.77167 1.93749,1.84778 2.90581,4.06445 2.90581,6.65167 0,2.54028 -0.96832,4.73431 -2.90581,6.58209 -1.89221,1.80167 -4.212,2.70209 -6.96019,2.70209 z" style="fill:#ffffff;fill-rule:nonzero;stroke-width:0.838376" />
+        <path d="M105 150L183 119L273 151L351 120V307L273 338L183 306L105 337Z"
-    <path d="M 213.56111,280.08446 H 195.99044 L 149.69953,207.0544 c -1.17121,-1.84778 -2.14037,-3.76515 -2.90581,-5.75126 h -0.40578 c 0.36051,2.12528 0.54076,6.67515 0.54076,13.6496 v 65.13172 h -15.54349 v -99.36009 h 18.71925 l 44.7374,71.29798 c 1.89222,2.95695 3.1087,4.98917 3.64945,6.09751 h 0.26996 c -0.45021,-2.6325 -0.67573,-7.09015 -0.67573,-13.37293 v -64.02256 h 15.47557 z" style="fill:#ffffff;fill-rule:nonzero;stroke-width:0.838376" />
+              fill="#F7FAF5" stroke="#E1ECE5" stroke-width="10" />
-    <path d="m 289.25134,280.08446 h -54.40052 v -99.36009 h 52.23835 v 13.99669 h -36.15411 v 28.13085 h 33.31621 v 13.9271 h -33.31621 v 29.37835 h 38.31628 z" style="fill:#ffffff;fill-rule:nonzero;stroke-width:0.838376" />
+        <path d="M183 119V306M273 151V338" fill="none" stroke="#83B6A5" stroke-width="10" />
-    <path d="M 366.56466,194.72106 H 338.7222 v 85.3634 h -16.08423 v -85.3634 h -27.77455 v -13.99669 h 71.70124 z" style="fill:#ffffff;fill-rule:nonzero;stroke-width:0.838376" />
+        <path d="M125 190L162 175M124 274L160 260M293 196L330 181M295 282L330 268"
-</svg>
+              fill="none" stroke="#A9CDBE" stroke-width="9" />
+        <path d="M228 104C188 104 157 135 157 175C157 225 228 294 228 294C228 294 299 225 299 175C299 135 268 104 228 104Z"
+              fill="#F97316" stroke="#FFFFFF" stroke-width="12" />
+        <circle cx="228" cy="175" r="24" fill="#FFFFFF" />
+    </g>
+</svg>

Services/AzureMapsService.cs

@@ -13,7 +13,7 @@ public sealed class AzureMapsService
 
     public AzureMapsService()
     {
-        _httpClient.DefaultRequestHeaders.UserAgent.ParseAdd("LMEMappeCatastali/0.2.9");
+        _httpClient.DefaultRequestHeaders.UserAgent.ParseAdd("LMEMappeCatastali/0.2.22");
         _httpClient.DefaultRequestHeaders.Accept.ParseAdd("application/json");
     }
 

Services/MapExportService.cs

@@ -0,0 +1,409 @@
+using System.Globalization;
+using System.IO.Compression;
+using System.Text;
+using System.Text.Json;
+using System.Xml.Linq;
+
+namespace LMEMappeCatastaliApp.Services;
+
+public sealed class MapExportService
+{
+    private static readonly XNamespace Kml = "http://www.opengis.net/kml/2.2";
+
+    public async Task<MapExportFile> CreateAsync(
+        string requestedName,
+        string requestedFormat,
+        string geoJson,
+        CancellationToken cancellationToken = default)
+    {
+        using var document = JsonDocument.Parse(geoJson);
+        var root = document.RootElement;
+        if (!root.TryGetProperty("type", out var type) || type.GetString() != "FeatureCollection"
+            || !root.TryGetProperty("features", out var features)
+            || features.ValueKind != JsonValueKind.Array)
+        {
+            throw new InvalidDataException("I dati raccolti dalla mappa non sono validi.");
+        }
+
+        var featureCount = features.GetArrayLength();
+        if (featureCount == 0)
+        {
+            throw new InvalidOperationException("Nessun oggetto selezionato e disponibile da esportare.");
+        }
+
+        var format = requestedFormat.Trim().ToLowerInvariant() switch
+        {
+            "kml" => "kml",
+            "kmz" => "kmz",
+            "gpx" => "gpx",
+            "pdf" => "pdf",
+            _ => "geojson"
+        };
+        var baseName = NormalizeFileName(requestedName);
+        var exportDirectory = Path.Combine(FileSystem.CacheDirectory, "Exports");
+        Directory.CreateDirectory(exportDirectory);
+        var path = Path.Combine(exportDirectory, $"{baseName}.{format}");
+
+        if (format == "geojson")
+        {
+            using var output = File.Create(path);
+            await JsonSerializer.SerializeAsync(output, root, new JsonSerializerOptions { WriteIndented = true }, cancellationToken);
+            return new(path, "application/geo+json", featureCount, Path.GetFileName(path));
+        }
+
+        if (format == "gpx")
+        {
+            await File.WriteAllTextAsync(path, BuildGpx(features, baseName), new UTF8Encoding(false), cancellationToken);
+            return new(path, "application/gpx+xml", featureCount, Path.GetFileName(path));
+        }
+
+        if (format == "pdf")
+        {
+            await File.WriteAllBytesAsync(path, BuildPdfReport(features, baseName), cancellationToken);
+            return new(path, "application/pdf", featureCount, Path.GetFileName(path));
+        }
+
+        var kml = BuildKml(features, baseName);
+        if (format == "kml")
+        {
+            await File.WriteAllTextAsync(path, kml, new UTF8Encoding(false), cancellationToken);
+            return new(path, "application/vnd.google-earth.kml+xml", featureCount, Path.GetFileName(path));
+        }
+
+        await using (var output = File.Create(path))
+        using (var archive = new ZipArchive(output, ZipArchiveMode.Create))
+        {
+            var entry = archive.CreateEntry("doc.kml", CompressionLevel.Optimal);
+            await using var entryStream = entry.Open();
+            await using var writer = new StreamWriter(entryStream, new UTF8Encoding(false));
+            await writer.WriteAsync(kml.AsMemory(), cancellationToken);
+        }
+        return new(path, "application/vnd.google-earth.kmz", featureCount, Path.GetFileName(path));
+    }
+
+    private static string BuildGpx(JsonElement features, string name)
+    {
+        var root = new XElement("gpx",
+            new XAttribute("version", "1.1"),
+            new XAttribute("creator", "LME Mappe Catastali 0.3.0"),
+            new XAttribute(XNamespace.Xmlns + "xsi", "http://www.w3.org/2001/XMLSchema-instance"),
+            new XElement("metadata", new XElement("name", name)));
+        foreach (var feature in features.EnumerateArray())
+        {
+            if (!feature.TryGetProperty("geometry", out var geometry) || geometry.ValueKind != JsonValueKind.Object) continue;
+            var properties = feature.TryGetProperty("properties", out var value) ? value : default;
+            var featureName = FeatureName(properties, GetString(properties, "_lmeCategory") ?? "drawing");
+            var type = geometry.GetProperty("type").GetString();
+            var coordinates = geometry.GetProperty("coordinates");
+            if (type == "Point")
+            {
+                root.Add(GpxPoint("wpt", coordinates, featureName));
+            }
+            else
+            {
+                foreach (var line in EnumerateGpxLines(type, coordinates))
+                {
+                    root.Add(new XElement("trk", new XElement("name", featureName),
+                        new XElement("trkseg", line.Select(point => GpxPoint("trkpt", point, null)))));
+                }
+            }
+        }
+        return new XDocument(new XDeclaration("1.0", "utf-8", null), root).ToString();
+    }
+
+    private static XElement GpxPoint(string element, JsonElement coordinate, string? name)
+    {
+        var values = coordinate.EnumerateArray().ToArray();
+        var point = new XElement(element,
+            new XAttribute("lat", values[1].GetDouble().ToString("G17", CultureInfo.InvariantCulture)),
+            new XAttribute("lon", values[0].GetDouble().ToString("G17", CultureInfo.InvariantCulture)));
+        if (!string.IsNullOrWhiteSpace(name)) point.Add(new XElement("name", name));
+        return point;
+    }
+
+    private static IEnumerable<JsonElement[]> EnumerateGpxLines(string? type, JsonElement coordinates)
+    {
+        if (type == "LineString") yield return coordinates.EnumerateArray().ToArray();
+        else if (type == "Polygon")
+            foreach (var ring in coordinates.EnumerateArray()) yield return ring.EnumerateArray().ToArray();
+        else if (type == "MultiLineString")
+            foreach (var line in coordinates.EnumerateArray()) yield return line.EnumerateArray().ToArray();
+        else if (type == "MultiPolygon")
+            foreach (var polygon in coordinates.EnumerateArray())
+            foreach (var ring in polygon.EnumerateArray()) yield return ring.EnumerateArray().ToArray();
+    }
+
+    private static byte[] BuildPdfReport(JsonElement features, string title)
+    {
+        var lines = new List<string>
+        {
+            title,
+            $"Rapporto LME Mappe Catastali - {DateTime.Now:dd/MM/yyyy HH:mm}",
+            $"Oggetti: {features.GetArrayLength()}",
+            ""
+        };
+        var index = 1;
+        foreach (var feature in features.EnumerateArray())
+        {
+            var properties = feature.TryGetProperty("properties", out var value) ? value : default;
+            var category = GetString(properties, "_lmeCategory") ?? "drawing";
+            var geometry = feature.TryGetProperty("geometry", out var geo) ? geo.GetProperty("type").GetString() : "-";
+            lines.Add($"{index++}. {FeatureName(properties, category)} [{category}, {geometry}]");
+        }
+        var content = new StringBuilder("BT /F1 16 Tf 48 790 Td ");
+        foreach (var line in lines.Take(42))
+        {
+            var safe = line.Replace("\\", "\\\\").Replace("(", "\\(").Replace(")", "\\)")
+                .Select(character => character <= 255 ? character : '?').ToArray();
+            content.Append('(').Append(safe).Append(") Tj 0 -18 Td ");
+        }
+        content.Append("ET");
+        var stream = Encoding.Latin1.GetBytes(content.ToString());
+        var objects = new[]
+        {
+            "<< /Type /Catalog /Pages 2 0 R >>",
+            "<< /Type /Pages /Kids [3 0 R] /Count 1 >>",
+            "<< /Type /Page /Parent 2 0 R /MediaBox [0 0 595 842] /Resources << /Font << /F1 5 0 R >> >> /Contents 4 0 R >>",
+            $"<< /Length {stream.Length} >>\nstream\n{Encoding.Latin1.GetString(stream)}\nendstream",
+            "<< /Type /Font /Subtype /Type1 /BaseFont /Helvetica >>"
+        };
+        using var output = new MemoryStream();
+        using var writer = new StreamWriter(output, Encoding.Latin1, leaveOpen: true) { NewLine = "\n" };
+        writer.Write("%PDF-1.4\n"); writer.Flush();
+        var offsets = new List<long> { 0 };
+        for (var i = 0; i < objects.Length; i++)
+        {
+            offsets.Add(output.Position); writer.Write($"{i + 1} 0 obj\n{objects[i]}\nendobj\n"); writer.Flush();
+        }
+        var xref = output.Position;
+        writer.Write($"xref\n0 {objects.Length + 1}\n0000000000 65535 f \n");
+        foreach (var offset in offsets.Skip(1)) writer.Write($"{offset:0000000000} 00000 n \n");
+        writer.Write($"trailer << /Size {objects.Length + 1} /Root 1 0 R >>\nstartxref\n{xref}\n%%EOF");
+        writer.Flush();
+        return output.ToArray();
+    }
+
+    private static string BuildKml(JsonElement features, string documentName)
+    {
+        var document = new XElement(Kml + "Document",
+            new XElement(Kml + "name", documentName),
+            BuildStyle("imported", "ff2ecc71", "402ecc71"),
+            BuildStyle("imported-sheet", "ff22803d", "1022803d"),
+            BuildStyle("cadastral", "ff4444ef", "4224bffb"),
+            BuildStyle("cadastral-gps", "ffff7a00", "337aff00"),
+            BuildStyle("drawing", "ff1679f9", "333c92fb"),
+            BuildStyle("poi", "ffff7a00", "33ff7a00"),
+            BuildStyle("gps-trail", "ff00a5ff", "2200a5ff"));
+        var categoryFolders = new Dictionary<string, XElement>(StringComparer.Ordinal);
+        var groupFolders = new Dictionary<(string Category, string Group), XElement>();
+
+        foreach (var feature in features.EnumerateArray())
+        {
+            if (!feature.TryGetProperty("geometry", out var geometry)
+                || geometry.ValueKind is JsonValueKind.Null or JsonValueKind.Undefined)
+            {
+                continue;
+            }
+
+            var properties = feature.TryGetProperty("properties", out var propertyElement)
+                && propertyElement.ValueKind == JsonValueKind.Object
+                ? propertyElement
+                : default;
+            var category = GetString(properties, "_lmeCategory") ?? "drawing";
+            var placemark = new XElement(Kml + "Placemark",
+                new XElement(Kml + "name", FeatureName(properties, category)),
+                new XElement(Kml + "styleUrl", $"#{NormalizeStyleId(category)}"));
+            var featureStyle = BuildFeatureStyle(properties);
+            if (featureStyle is not null)
+            {
+                placemark.Add(featureStyle);
+            }
+
+            var extendedData = BuildExtendedData(properties);
+            if (extendedData is not null)
+            {
+                placemark.Add(extendedData);
+            }
+            placemark.Add(BuildGeometry(geometry));
+            var categoryName = GetString(properties, "_lmeCategoryName")?.Trim();
+            var groupName = GetString(properties, "_lmeGroupName")?.Trim();
+            var parent = document;
+            if (!string.IsNullOrWhiteSpace(categoryName))
+            {
+                if (!categoryFolders.TryGetValue(categoryName, out var categoryFolder))
+                {
+                    categoryFolder = new XElement(Kml + "Folder", new XElement(Kml + "name", categoryName));
+                    categoryFolders[categoryName] = categoryFolder;
+                    document.Add(categoryFolder);
+                }
+                parent = categoryFolder;
+            }
+            if (!string.IsNullOrWhiteSpace(groupName))
+            {
+                var key = (categoryName ?? string.Empty, groupName);
+                if (!groupFolders.TryGetValue(key, out var groupFolder))
+                {
+                    groupFolder = new XElement(Kml + "Folder", new XElement(Kml + "name", groupName));
+                    groupFolders[key] = groupFolder;
+                    parent.Add(groupFolder);
+                }
+                parent = groupFolder;
+            }
+            parent.Add(placemark);
+        }
+
+        return new XDocument(new XDeclaration("1.0", "utf-8", null), new XElement(Kml + "kml", document)).ToString();
+    }
+
+    private static XElement BuildStyle(string id, string lineColor, string fillColor) =>
+        new(Kml + "Style",
+            new XAttribute("id", id),
+            new XElement(Kml + "LineStyle",
+                new XElement(Kml + "color", lineColor),
+                new XElement(Kml + "width", 3)),
+            new XElement(Kml + "PolyStyle", new XElement(Kml + "color", fillColor)));
+
+    private static XElement? BuildFeatureStyle(JsonElement properties)
+    {
+        var color = GetString(properties, "_lmeColor");
+        var fillColor = GetString(properties, "_lmeFillColor") ?? color;
+        if (string.IsNullOrWhiteSpace(color) && string.IsNullOrWhiteSpace(fillColor)) return null;
+        var weight = GetNumber(properties, "_lmeWeight", 3);
+        var opacity = GetNumber(properties, "_lmeOpacity", 1);
+        var fillOpacity = GetNumber(properties, "_lmeFillOpacity", 0.2);
+        return new XElement(Kml + "Style",
+            new XElement(Kml + "LineStyle",
+                new XElement(Kml + "color", ToKmlColor(color ?? "#f97316", opacity)),
+                new XElement(Kml + "width", weight.ToString("0.##", CultureInfo.InvariantCulture))),
+            new XElement(Kml + "PolyStyle",
+                new XElement(Kml + "color", ToKmlColor(fillColor ?? "#fb923c", fillOpacity))));
+    }
+
+    private static double GetNumber(JsonElement properties, string name, double fallback) =>
+        properties.ValueKind == JsonValueKind.Object
+        && properties.TryGetProperty(name, out var value)
+        && value.ValueKind == JsonValueKind.Number
+            ? value.GetDouble()
+            : fallback;
+
+    private static string ToKmlColor(string html, double opacity)
+    {
+        var value = html.TrimStart('#');
+        if (value.Length != 6) value = "f97316";
+        var alpha = (int)Math.Round(Math.Clamp(opacity, 0, 1) * 255);
+        return $"{alpha:x2}{value[4..6]}{value[2..4]}{value[0..2]}";
+    }
+
+    private static XElement? BuildExtendedData(JsonElement properties)
+    {
+        if (properties.ValueKind != JsonValueKind.Object)
+        {
+            return null;
+        }
+
+        var data = properties.EnumerateObject()
+            .Where(item => item.Name != "_lmeCategory"
+                && item.Value.ValueKind is JsonValueKind.String or JsonValueKind.Number or JsonValueKind.True or JsonValueKind.False)
+            .Select(item => new XElement(Kml + "Data",
+                new XAttribute("name", item.Name),
+                new XElement(Kml + "value", ScalarText(item.Value))))
+            .ToArray();
+        return data.Length == 0 ? null : new XElement(Kml + "ExtendedData", data);
+    }
+
+    private static XElement BuildGeometry(JsonElement geometry)
+    {
+        var type = geometry.GetProperty("type").GetString();
+        if (type == "GeometryCollection")
+        {
+            return new XElement(Kml + "MultiGeometry",
+                geometry.GetProperty("geometries").EnumerateArray().Select(BuildGeometry));
+        }
+
+        var coordinates = geometry.GetProperty("coordinates");
+        return type switch
+        {
+            "Point" => new XElement(Kml + "Point", CoordinatesElement([coordinates])),
+            "LineString" => new XElement(Kml + "LineString", CoordinatesElement(coordinates.EnumerateArray())),
+            "Polygon" => BuildPolygon(coordinates),
+            "MultiPoint" => new XElement(Kml + "MultiGeometry",
+                coordinates.EnumerateArray().Select(point => new XElement(Kml + "Point", CoordinatesElement([point])))),
+            "MultiLineString" => new XElement(Kml + "MultiGeometry",
+                coordinates.EnumerateArray().Select(line => new XElement(Kml + "LineString", CoordinatesElement(line.EnumerateArray())))),
+            "MultiPolygon" => new XElement(Kml + "MultiGeometry", coordinates.EnumerateArray().Select(BuildPolygon)),
+            _ => throw new InvalidDataException($"Geometria GeoJSON non supportata: {type}.")
+        };
+    }
+
+    private static XElement BuildPolygon(JsonElement rings)
+    {
+        var ringList = rings.EnumerateArray().ToArray();
+        var polygon = new XElement(Kml + "Polygon");
+        if (ringList.Length > 0)
+        {
+            polygon.Add(new XElement(Kml + "outerBoundaryIs",
+                new XElement(Kml + "LinearRing", CoordinatesElement(ringList[0].EnumerateArray()))));
+        }
+        foreach (var ring in ringList.Skip(1))
+        {
+            polygon.Add(new XElement(Kml + "innerBoundaryIs",
+                new XElement(Kml + "LinearRing", CoordinatesElement(ring.EnumerateArray()))));
+        }
+        return polygon;
+    }
+
+    private static XElement CoordinatesElement(IEnumerable<JsonElement> points) =>
+        new(Kml + "coordinates", string.Join(" ", points.Select(FormatCoordinate)));
+
+    private static string FormatCoordinate(JsonElement coordinate)
+    {
+        var values = coordinate.EnumerateArray().Take(3)
+            .Select(value => value.GetDouble().ToString("G17", CultureInfo.InvariantCulture));
+        return string.Join(",", values);
+    }
+
+    private static string FeatureName(JsonElement properties, string category) =>
+        GetString(properties, "name")
+        ?? GetString(properties, "Name")
+        ?? GetString(properties, "LABEL")
+        ?? GetString(properties, "NATIONALCADASTRALREFERENCE")
+        ?? category switch
+        {
+            "imported-sheet" => "Cornice o foglio importato",
+            "cadastral" => "Particella catastale",
+            "cadastral-gps" => "Particella GPS",
+            "poi" => "Punto di interesse",
+            "gps-trail" => "Traccia GPS",
+            _ => "Oggetto mappa"
+        };
+
+    private static string? GetString(JsonElement element, string name) =>
+        element.ValueKind == JsonValueKind.Object
+        && element.TryGetProperty(name, out var value)
+        && value.ValueKind == JsonValueKind.String
+            ? value.GetString()
+            : null;
+
+    private static string ScalarText(JsonElement value) => value.ValueKind == JsonValueKind.String
+        ? value.GetString() ?? string.Empty
+        : value.GetRawText();
+
+    private static string NormalizeStyleId(string category) => category switch
+    {
+        "imported" or "imported-sheet" or "cadastral" or "cadastral-gps" or "drawing" or "poi" or "gps-trail" => category,
+        _ => "drawing"
+    };
+
+    private static string NormalizeFileName(string requestedName)
+    {
+        var name = string.IsNullOrWhiteSpace(requestedName) ? "Mappa" : requestedName.Trim();
+        foreach (var invalid in Path.GetInvalidFileNameChars())
+        {
+            name = name.Replace(invalid, '_');
+        }
+        name = Path.GetFileNameWithoutExtension(name).Trim().TrimEnd('.');
+        return string.IsNullOrWhiteSpace(name) ? "Mappa" : name[..Math.Min(name.Length, 80)];
+    }
+}
+
+public sealed record MapExportFile(string Path, string MimeType, int FeatureCount, string FileName);

Services/NetworkLocationService.cs

@@ -0,0 +1,74 @@
+using System.Net.Http.Json;
+using System.Text.Json.Serialization;
+using Microsoft.Maui.Networking;
+
+namespace LMEMappeCatastaliApp.Services;
+
+public sealed class NetworkLocationService
+{
+    private readonly HttpClient httpClient = new()
+    {
+        Timeout = TimeSpan.FromSeconds(6)
+    };
+
+    public NetworkLocationService()
+    {
+        httpClient.DefaultRequestHeaders.UserAgent.ParseAdd("LMEMappeCatastali/0.2.22");
+    }
+
+    public async Task<NetworkLocationSnapshot?> GetApproximateLocationAsync(
+        CancellationToken cancellationToken = default)
+    {
+        if (Connectivity.Current.NetworkAccess != NetworkAccess.Internet)
+        {
+            return null;
+        }
+
+        using var response = await httpClient.GetAsync("https://ipapi.co/json/", cancellationToken);
+        if (!response.IsSuccessStatusCode)
+        {
+            return null;
+        }
+
+        var result = await response.Content.ReadFromJsonAsync<IpLocationResponse>(cancellationToken);
+        if (result is null
+            || result.Error == true
+            || !result.Latitude.HasValue
+            || !result.Longitude.HasValue
+            || Math.Abs(result.Latitude.Value) > 90
+            || Math.Abs(result.Longitude.Value) > 180)
+        {
+            return null;
+        }
+
+        var labelParts = new[] { result.City, result.Region, result.CountryName }
+            .Where(value => !string.IsNullOrWhiteSpace(value));
+        return new NetworkLocationSnapshot(
+            result.Latitude.Value,
+            result.Longitude.Value,
+            string.Join(", ", labelParts));
+    }
+
+    private sealed class IpLocationResponse
+    {
+        [JsonPropertyName("latitude")]
+        public double? Latitude { get; init; }
+
+        [JsonPropertyName("longitude")]
+        public double? Longitude { get; init; }
+
+        [JsonPropertyName("city")]
+        public string? City { get; init; }
+
+        [JsonPropertyName("region")]
+        public string? Region { get; init; }
+
+        [JsonPropertyName("country_name")]
+        public string? CountryName { get; init; }
+
+        [JsonPropertyName("error")]
+        public bool? Error { get; init; }
+    }
+}
+
+public sealed record NetworkLocationSnapshot(double Latitude, double Longitude, string Label);

Services/PreciseLocationService.cs

@@ -20,6 +20,37 @@ public sealed class PreciseLocationService : IAsyncDisposable
         return status;
     }
 
+    public async Task<LocationSnapshot?> GetCurrentLocationAsync(CancellationToken cancellationToken = default)
+    {
+        var permission = await EnsurePermissionAsync();
+        if (permission != PermissionStatus.Granted)
+        {
+            return null;
+        }
+
+        Location? location = null;
+        try
+        {
+            var request = new GeolocationRequest(GeolocationAccuracy.Best, TimeSpan.FromSeconds(8));
+            location = await Geolocation.Default.GetLocationAsync(request, cancellationToken);
+        }
+        catch (FeatureNotSupportedException)
+        {
+            return null;
+        }
+
+        if (location is null)
+        {
+            var lastKnown = await Geolocation.Default.GetLastKnownLocationAsync();
+            if (lastKnown is not null && lastKnown.Timestamp >= DateTimeOffset.UtcNow.AddMinutes(-15))
+            {
+                location = lastKnown;
+            }
+        }
+
+        return location is null ? null : ToSnapshot(location);
+    }
+
     public async Task StartTrackingAsync(Func<LocationSnapshot, Task> onLocation, Func<string, Task> onError)
     {
         if (trackingCancellation is not null)
@@ -47,14 +78,7 @@ public sealed class PreciseLocationService : IAsyncDisposable
                     var location = await Geolocation.Default.GetLocationAsync(request, token);
                     if (location is not null)
                     {
-                        await onLocation(new LocationSnapshot(
+                        await onLocation(ToSnapshot(location));
-                            location.Latitude,
-                            location.Longitude,
-                            location.Accuracy,
-                            location.Altitude,
-                            location.Course,
-                            location.Speed,
-                            location.Timestamp));
                     }
                 }
                 catch (OperationCanceledException)
@@ -84,6 +108,15 @@ public sealed class PreciseLocationService : IAsyncDisposable
         StopTracking();
         return ValueTask.CompletedTask;
     }
+
+    private static LocationSnapshot ToSnapshot(Location location) => new(
+        location.Latitude,
+        location.Longitude,
+        location.Accuracy,
+        location.Altitude,
+        location.Course,
+        location.Speed,
+        location.Timestamp);
 }
 
 public sealed record LocationSnapshot(

Services/ProjectStorageService.cs

@@ -1,5 +1,6 @@
 using System.Text;
 using System.Text.Json;
+using System.IO.Compression;
 
 namespace LMEMappeCatastaliApp.Services;
 
@@ -13,8 +14,9 @@ public sealed class ProjectStorageService
     };
 
     private string ProjectsDirectory => Path.Combine(FileSystem.AppDataDirectory, "Projects");
+    private string HistoryDirectory => Path.Combine(ProjectsDirectory, ".history");
 
-    public async Task<IReadOnlyList<MapProjectSummary>> GetProjectsAsync()
+    public async Task<IReadOnlyList<MapProjectSummary>> GetProjectsAsync(bool includeArchived = true)
     {
         await _gate.WaitAsync();
         try
@@ -22,6 +24,7 @@ public sealed class ProjectStorageService
             var files = await ReadProjectFilesAsync();
             return files
                 .Select(item => item.Document.ToSummary())
+                .Where(item => includeArchived || !item.IsArchived)
                 .OrderByDescending(item => item.UpdatedAt)
                 .ThenBy(item => item.Name, StringComparer.CurrentCultureIgnoreCase)
                 .ToArray();
@@ -56,14 +59,23 @@ public sealed class ProjectStorageService
 
             var now = DateTimeOffset.UtcNow;
             var id = existing?.Document.Id ?? Guid.NewGuid().ToString("N");
+            if (existing is not null)
+            {
+                Directory.CreateDirectory(HistoryDirectory);
+                var revisionName = $"{id}--{existing.Document.UpdatedAt:yyyyMMddHHmmssfff}{ProjectExtension}";
+                File.Copy(existing.Path, Path.Combine(HistoryDirectory, revisionName), true);
+                PruneHistory(id, 15);
+            }
             var document = new MapProjectDocument
             {
-                SchemaVersion = 1,
+                SchemaVersion = 2,
                 Id = id,
                 Name = normalizedName,
                 CreatedAt = existing?.Document.CreatedAt ?? now,
                 UpdatedAt = now,
                 IncludesCadastralParcels = includesCadastralParcels,
+                Folder = existing?.Document.Folder ?? string.Empty,
+                IsArchived = existing?.Document.IsArchived ?? false,
                 Map = snapshotDocument.RootElement.Clone()
             };
 
@@ -93,6 +105,178 @@ public sealed class ProjectStorageService
         }
     }
 
+    public async Task<MapProjectSummary> DuplicateAsync(string projectId)
+    {
+        await _gate.WaitAsync();
+        try
+        {
+            var files = await ReadProjectFilesAsync();
+            var source = files.FirstOrDefault(item => item.Document.Id == projectId)
+                ?? throw new FileNotFoundException("Il progetto selezionato non esiste piu'.");
+            var usedNames = files.Select(item => item.Document.Name).ToHashSet(StringComparer.CurrentCultureIgnoreCase);
+            var baseName = $"{source.Document.Name} - copia";
+            var name = baseName;
+            for (var index = 2; usedNames.Contains(name); index++)
+            {
+                name = $"{baseName} {index}";
+            }
+            var now = DateTimeOffset.UtcNow;
+            var id = Guid.NewGuid().ToString("N");
+            var copy = new MapProjectDocument
+            {
+                SchemaVersion = 2,
+                Id = id,
+                Name = name,
+                CreatedAt = now,
+                UpdatedAt = now,
+                IncludesCadastralParcels = source.Document.IncludesCadastralParcels,
+                Folder = source.Document.Folder,
+                Map = source.Document.Map.Clone()
+            };
+            var path = Path.Combine(ProjectsDirectory, BuildFileName(name, id));
+            await File.WriteAllTextAsync(path, JsonSerializer.Serialize(copy, _jsonOptions), new UTF8Encoding(false));
+            return copy.ToSummary();
+        }
+        finally { _gate.Release(); }
+    }
+
+    public async Task UpdateOrganizationAsync(string projectId, string? folder = null, bool? isArchived = null)
+    {
+        await _gate.WaitAsync();
+        try
+        {
+            var project = (await ReadProjectFilesAsync()).FirstOrDefault(item => item.Document.Id == projectId)
+                ?? throw new FileNotFoundException("Il progetto selezionato non esiste piu'.");
+            project.Document.Folder = NormalizeFolder(folder ?? project.Document.Folder);
+            project.Document.IsArchived = isArchived ?? project.Document.IsArchived;
+            project.Document.UpdatedAt = DateTimeOffset.UtcNow;
+            await File.WriteAllTextAsync(project.Path, JsonSerializer.Serialize(project.Document, _jsonOptions), new UTF8Encoding(false));
+        }
+        finally { _gate.Release(); }
+    }
+
+    public async Task<IReadOnlyList<MapProjectVersion>> GetVersionsAsync(string projectId)
+    {
+        await _gate.WaitAsync();
+        try
+        {
+            Directory.CreateDirectory(HistoryDirectory);
+            var versions = new List<MapProjectVersion>();
+            foreach (var path in Directory.EnumerateFiles(HistoryDirectory, $"{projectId}--*{ProjectExtension}"))
+            {
+                try
+                {
+                    await using var stream = File.OpenRead(path);
+                    var document = await JsonSerializer.DeserializeAsync<MapProjectDocument>(stream, _jsonOptions);
+                    if (document is not null)
+                    {
+                        versions.Add(new(Path.GetFileName(path), document.UpdatedAt));
+                    }
+                }
+                catch (JsonException) { }
+                catch (IOException) { }
+            }
+            return versions.OrderByDescending(item => item.UpdatedAt).ToArray();
+        }
+        finally { _gate.Release(); }
+    }
+
+    public async Task<string> LoadVersionAsync(string projectId, string versionId)
+    {
+        await _gate.WaitAsync();
+        try
+        {
+            if (!versionId.StartsWith($"{projectId}--", StringComparison.Ordinal)
+                || Path.GetFileName(versionId) != versionId)
+            {
+                throw new InvalidDataException("Revisione non valida.");
+            }
+            var path = Path.Combine(HistoryDirectory, versionId);
+            await using var stream = File.OpenRead(path);
+            var document = await JsonSerializer.DeserializeAsync<MapProjectDocument>(stream, _jsonOptions)
+                ?? throw new InvalidDataException("Revisione non leggibile.");
+            return document.Map.GetRawText();
+        }
+        finally { _gate.Release(); }
+    }
+
+    public async Task<string> CreateBackupAsync()
+    {
+        await _gate.WaitAsync();
+        try
+        {
+            Directory.CreateDirectory(ProjectsDirectory);
+            var directory = Path.Combine(FileSystem.CacheDirectory, "Backups");
+            Directory.CreateDirectory(directory);
+            var path = Path.Combine(directory, $"LMEMappeCatastali-backup-{DateTime.Now:yyyyMMdd-HHmmss}.lmebackup.zip");
+            if (File.Exists(path)) File.Delete(path);
+            ZipFile.CreateFromDirectory(ProjectsDirectory, path, CompressionLevel.Optimal, false);
+            return path;
+        }
+        finally { _gate.Release(); }
+    }
+
+    public async Task<int> RestoreBackupAsync(string backupPath)
+    {
+        await _gate.WaitAsync();
+        try
+        {
+            Directory.CreateDirectory(ProjectsDirectory);
+            using var archive = ZipFile.OpenRead(backupPath);
+            var restored = 0;
+            foreach (var entry in archive.Entries.Where(item => item.FullName.EndsWith(ProjectExtension, StringComparison.OrdinalIgnoreCase)))
+            {
+                var fileName = Path.GetFileName(entry.FullName);
+                if (string.IsNullOrWhiteSpace(fileName)) continue;
+                var targetDirectory = entry.FullName.Contains(".history/", StringComparison.OrdinalIgnoreCase)
+                    || entry.FullName.Contains(".history\\", StringComparison.OrdinalIgnoreCase)
+                    ? HistoryDirectory : ProjectsDirectory;
+                Directory.CreateDirectory(targetDirectory);
+                entry.ExtractToFile(Path.Combine(targetDirectory, fileName), true);
+                if (targetDirectory == ProjectsDirectory) restored++;
+            }
+            return restored;
+        }
+        finally { _gate.Release(); }
+    }
+
+    public async Task<string> CreateProjectPackageAsync(string projectId)
+    {
+        await _gate.WaitAsync();
+        try
+        {
+            var project = (await ReadProjectFilesAsync()).FirstOrDefault(item => item.Document.Id == projectId)
+                ?? throw new FileNotFoundException("Il progetto selezionato non esiste piu'.");
+            var directory = Path.Combine(FileSystem.CacheDirectory, "Projects");
+            Directory.CreateDirectory(directory);
+            var path = Path.Combine(directory, Path.GetFileName(project.Path));
+            File.Copy(project.Path, path, true);
+            return path;
+        }
+        finally { _gate.Release(); }
+    }
+
+    public async Task<MapProjectSummary> ImportProjectAsync(string path)
+    {
+        await _gate.WaitAsync();
+        try
+        {
+            await using var stream = File.OpenRead(path);
+            var source = await JsonSerializer.DeserializeAsync<MapProjectDocument>(stream, _jsonOptions)
+                ?? throw new InvalidDataException("Progetto non leggibile.");
+            if (source.Map.ValueKind != JsonValueKind.Object) throw new InvalidDataException("Mappa del progetto non valida.");
+            source.Id = Guid.NewGuid().ToString("N");
+            source.Name = NormalizeName(source.Name);
+            source.CreatedAt = source.UpdatedAt = DateTimeOffset.UtcNow;
+            source.IsArchived = false;
+            Directory.CreateDirectory(ProjectsDirectory);
+            var target = Path.Combine(ProjectsDirectory, BuildFileName(source.Name, source.Id));
+            await File.WriteAllTextAsync(target, JsonSerializer.Serialize(source, _jsonOptions), new UTF8Encoding(false));
+            return source.ToSummary();
+        }
+        finally { _gate.Release(); }
+    }
+
     public async Task<string> LoadAsync(string projectId)
     {
         await _gate.WaitAsync();
@@ -118,6 +302,13 @@ public sealed class ProjectStorageService
                 .FirstOrDefault(item => item.Document.Id == projectId)
                 ?? throw new FileNotFoundException("Il progetto selezionato non esiste piu'.");
             File.Delete(project.Path);
+            if (Directory.Exists(HistoryDirectory))
+            {
+                foreach (var path in Directory.EnumerateFiles(HistoryDirectory, $"{projectId}--*{ProjectExtension}"))
+                {
+                    File.Delete(path);
+                }
+            }
         }
         finally
         {
@@ -179,19 +370,36 @@ public sealed class ProjectStorageService
         return $"{safeName}--{id[..8]}{ProjectExtension}";
     }
 
+    private void PruneHistory(string projectId, int keep)
+    {
+        foreach (var path in Directory.EnumerateFiles(HistoryDirectory, $"{projectId}--*{ProjectExtension}")
+                     .OrderByDescending(File.GetLastWriteTimeUtc).Skip(keep))
+        {
+            File.Delete(path);
+        }
+    }
+
+    private static string NormalizeFolder(string value)
+    {
+        var normalized = string.Join(' ', (value ?? string.Empty).Split([' ', '\t', '\r', '\n'], StringSplitOptions.RemoveEmptyEntries));
+        return normalized[..Math.Min(normalized.Length, 60)];
+    }
+
     private sealed record ProjectFileEntry(string Path, MapProjectDocument Document);
 
     private sealed class MapProjectDocument
     {
-        public int SchemaVersion { get; init; }
+        public int SchemaVersion { get; set; }
-        public string Id { get; init; } = string.Empty;
+        public string Id { get; set; } = string.Empty;
-        public string Name { get; init; } = string.Empty;
+        public string Name { get; set; } = string.Empty;
-        public DateTimeOffset CreatedAt { get; init; }
+        public DateTimeOffset CreatedAt { get; set; }
-        public DateTimeOffset UpdatedAt { get; init; }
+        public DateTimeOffset UpdatedAt { get; set; }
-        public bool IncludesCadastralParcels { get; init; }
+        public bool IncludesCadastralParcels { get; set; }
-        public JsonElement Map { get; init; }
+        public string Folder { get; set; } = string.Empty;
+        public bool IsArchived { get; set; }
+        public JsonElement Map { get; set; }
 
-        public MapProjectSummary ToSummary() => new(Id, Name, UpdatedAt, IncludesCadastralParcels);
+        public MapProjectSummary ToSummary() => new(Id, Name, UpdatedAt, IncludesCadastralParcels, Folder, IsArchived);
     }
 }
 
@@ -199,4 +407,8 @@ public sealed record MapProjectSummary(
     string Id,
     string Name,
     DateTimeOffset UpdatedAt,
-    bool IncludesCadastralParcels);
+    bool IncludesCadastralParcels,
+    string Folder,
+    bool IsArchived);
+
+public sealed record MapProjectVersion(string Id, DateTimeOffset UpdatedAt);

wwwroot/css/app.css

@@ -176,10 +176,11 @@ input[type="checkbox"] {
     position: absolute;
     top: 72px;
     right: 12px;
-    z-index: 940;
+    bottom: calc(var(--nav-height) + 8px);
+    z-index: 1080;
     display: grid;
-    width: min(320px, calc(100% - 24px));
+    box-sizing: border-box;
-    max-height: calc(100% - 152px);
+    width: min(480px, 50vw);
     overflow-y: auto;
     border: 1px solid var(--line);
     border-radius: 8px;
@@ -239,6 +240,419 @@ input[type="checkbox"] {
     padding-top: 9px;
 }
 
+.layer-tree-section {
+    display: grid;
+    gap: 6px;
+    padding-top: 9px;
+}
+
+.layer-tree-section > header {
+    display: grid;
+    gap: 2px;
+    padding: 0 4px;
+}
+
+.layer-tree-section > header small {
+    color: var(--muted);
+    font-size: 10px;
+}
+
+.layer-manager-tree,
+.layer-manager-children {
+    display: grid;
+    gap: 4px;
+}
+
+.layer-selection-toolbar {
+    position: sticky;
+    top: -9px;
+    z-index: 3;
+    display: grid;
+    gap: 6px;
+    padding: 8px 4px;
+    border-bottom: 1px solid var(--line);
+    background: rgba(255, 255, 255, 0.98);
+}
+
+.layer-selection-toolbar label,
+.layer-object-tools > label:not(.layer-manager-suboption),
+.layer-style-controls label {
+    display: grid;
+    gap: 3px;
+    font-size: 9px;
+}
+
+.layer-selection-summary {
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    gap: 6px;
+    font-size: 10px;
+}
+
+.layer-selection-summary button,
+.layer-batch-actions button,
+.layer-compact-actions button,
+.layer-object-tools > button {
+    min-height: 28px;
+    min-width: 0;
+    padding: 4px 6px;
+    font-size: 9px;
+}
+
+.layer-selection-summary button {
+    max-width: 48%;
+}
+
+.layer-batch-actions,
+.layer-compact-actions {
+    display: grid;
+    grid-template-columns: repeat(2, minmax(0, 1fr));
+    gap: 4px;
+}
+
+.layer-group-tools,
+.layer-object-tools {
+    display: grid;
+    gap: 6px;
+    min-width: 0;
+    padding: 7px;
+    border: 1px dashed var(--layer-group-border, #cbd5da);
+    border-radius: 4px;
+    background: rgba(255, 255, 255, 0.7);
+}
+
+.layer-group-tools {
+    margin: 0 3px 4px;
+}
+
+.layer-group-totals {
+    color: var(--muted);
+    font-size: 9px;
+}
+
+.layer-style-controls {
+    display: grid;
+    grid-template-columns: repeat(2, minmax(0, 1fr));
+    gap: 5px;
+}
+
+.layer-style-controls input,
+.layer-style-controls select,
+.layer-object-tools textarea {
+    width: 100%;
+    min-width: 0;
+    min-height: 28px;
+    padding: 3px;
+    font-size: 10px;
+}
+
+.layer-style-controls input[type="color"] {
+    padding: 1px;
+}
+
+.layer-photo-picker {
+    position: relative;
+    min-height: 32px;
+    place-items: center;
+    border: 1px dashed #8aa2aa;
+    border-radius: 4px;
+}
+
+.layer-photo-picker input {
+    position: absolute;
+    inset: 0;
+    opacity: 0;
+}
+
+.layer-photo-preview {
+    display: block;
+    width: 100%;
+    max-height: 140px;
+    object-fit: contain;
+}
+
+.lme-popup-photo {
+    display: block;
+    width: min(240px, 60vw);
+    max-height: 180px;
+    margin-top: 6px;
+    object-fit: contain;
+}
+
+.lme-permanent-label {
+    width: 0 !important;
+    height: 0 !important;
+    border: 0 !important;
+    background: transparent !important;
+}
+
+.lme-permanent-label span {
+    position: absolute;
+    transform: translate(-50%, -50%);
+    padding: 2px 5px;
+    border: 1px solid #52616c;
+    border-radius: 3px;
+    background: rgba(255, 255, 255, 0.92);
+    color: #17212b;
+    font-size: 10px;
+    font-weight: 800;
+    white-space: nowrap;
+}
+
+.lme-offline-tile {
+    box-sizing: border-box;
+    width: 256px;
+    height: 256px;
+    border: 1px solid #d8e0e3;
+    background-color: #f5f7f8;
+}
+
+.layer-manager-group,
+.layer-manager-block,
+.layer-manager-object {
+    border: 1px solid var(--layer-group-border, #dce3e6);
+    border-radius: 6px;
+    background: var(--layer-group-surface, #fff);
+}
+
+.layer-manager-group > summary,
+.layer-manager-block > summary {
+    background: var(--layer-group-parent, #f6f8f9);
+}
+
+.layer-manager-object > summary {
+    background: var(--layer-group-surface, #fff);
+}
+
+.layer-manager-group > summary,
+.layer-manager-block > summary,
+.layer-manager-object > summary {
+    display: grid;
+    grid-template-columns: 28px minmax(0, 1fr) 50px;
+    grid-template-areas:
+        "handle title count"
+        ". visibility moves"
+        ". actions moves";
+    align-items: start;
+    gap: 6px;
+    min-height: 38px;
+    padding: 4px 6px;
+    cursor: pointer;
+    list-style: none;
+}
+
+.layer-manager-group > summary::-webkit-details-marker,
+.layer-manager-block > summary::-webkit-details-marker,
+.layer-manager-object > summary::-webkit-details-marker {
+    display: none;
+}
+
+.layer-drag-handle {
+    grid-area: handle;
+    width: 28px;
+    height: 28px;
+    border: 0;
+    border-radius: 4px;
+    background: #e9eef0;
+    color: var(--ink);
+    font-size: 18px;
+    line-height: 1;
+    touch-action: none;
+    cursor: grab;
+}
+
+.layer-row-actions {
+    grid-area: actions;
+    display: grid;
+    grid-template-columns: minmax(0, 1fr);
+    width: min(130px, 100%);
+    gap: 4px;
+}
+
+.layer-manager-group > summary > input,
+.layer-manager-block > summary > input,
+.layer-manager-object > summary > input {
+    grid-area: visibility;
+    justify-self: start;
+    width: 20px;
+    height: 20px;
+    margin: 1px 0;
+}
+
+.layer-rename-button,
+.layer-remove-button {
+    width: 100%;
+    min-height: 28px;
+    min-width: 0;
+    padding: 4px;
+    border: 1px solid #bfd4cd;
+    border-radius: 4px;
+    background: #eef8f5;
+    color: var(--accent-strong);
+    font-size: 10px;
+    font-weight: 800;
+    line-height: 1.15;
+    overflow-wrap: anywhere;
+}
+
+.layer-rename-button:active {
+    background: #d9eee7;
+}
+
+.layer-remove-button {
+    border-color: #fecaca;
+    background: #fff1f2;
+    color: #b42318;
+}
+
+.layer-remove-button:active {
+    background: #ffe4e6;
+}
+
+.layer-move-buttons {
+    grid-area: moves;
+    display: inline-grid;
+    grid-template-columns: 24px 24px;
+    gap: 2px;
+}
+
+.layer-move-buttons button {
+    width: 24px;
+    height: 28px;
+    padding: 0;
+    border: 1px solid #cbd5da;
+    border-radius: 4px;
+    background: #f6f8f9;
+    color: var(--ink);
+    font-size: 16px;
+    font-weight: 800;
+    line-height: 1;
+}
+
+.layer-move-buttons button:active {
+    background: #dce8ec;
+}
+
+.layer-manager-title {
+    grid-area: title;
+    min-width: 0;
+    overflow-wrap: anywhere;
+    color: var(--layer-group-accent, var(--ink));
+    font-size: 12px;
+}
+
+.layer-manager-group > summary > .layer-manager-title {
+    font-size: 13px;
+    font-weight: 800;
+}
+
+.layer-manager-block > summary > .layer-manager-title {
+    font-size: 12px;
+    font-weight: 800;
+}
+
+.layer-manager-object > summary > .layer-manager-title {
+    font-size: 11px;
+    font-style: italic;
+    font-weight: 400;
+}
+
+.layer-manager-count {
+    grid-area: count;
+    justify-self: end;
+    color: var(--muted);
+    font-size: 10px;
+}
+
+.layer-manager-children {
+    margin-left: 4px;
+    padding: 4px 3px 5px 6px;
+    border-left: 2px solid var(--layer-group-border, #dce3e6);
+}
+
+.layer-manager-block > .layer-manager-children {
+    margin-left: 5px;
+    padding-left: 5px;
+}
+
+.layer-manager-object {
+    margin-left: 3px;
+    border-radius: 4px;
+}
+
+.layer-manager-object > summary {
+    grid-template-columns: 24px minmax(0, 1fr) 46px;
+    gap: 4px;
+    padding: 3px 4px;
+}
+
+.layer-manager-object > summary > .layer-drag-handle {
+    width: 24px;
+    height: 24px;
+    font-size: 15px;
+}
+
+.layer-manager-object > summary > .layer-move-buttons {
+    grid-template-columns: 22px 22px;
+}
+
+.layer-manager-object > summary > .layer-move-buttons button {
+    width: 22px;
+    height: 24px;
+}
+
+.layer-manager-object > summary .layer-rename-button,
+.layer-manager-object > summary .layer-remove-button {
+    min-height: 24px;
+    font-size: 9px;
+}
+
+.layer-manager-details {
+    display: grid;
+    gap: 2px;
+    padding: 0 6px 7px 12px;
+    color: var(--muted);
+    font-size: 10px;
+}
+
+.layer-manager-suboption {
+    display: grid;
+    grid-template-columns: 18px minmax(0, 1fr);
+    align-items: center;
+    gap: 6px;
+    min-height: 30px;
+    color: var(--ink);
+    font-size: 11px;
+    font-weight: 700;
+}
+
+.layer-manager-suboption input {
+    margin: 0;
+}
+
+.layer-manager-info {
+    display: grid;
+    gap: 2px;
+    padding: 3px 0 0 24px;
+}
+
+.layer-manager-dragging {
+    opacity: 0.55;
+    outline: 2px solid #2563eb;
+}
+
+.layer-manager-object-selected > summary {
+    background: #fff0fb;
+    box-shadow: inset 3px 0 #ff00d4;
+}
+
+.layer-manager-parent-highlighted > summary,
+.layer-manager-parent-selected > summary {
+    background: #fff0fb;
+    box-shadow: inset 3px 0 #ff00d4;
+}
+
 .gps-overlay {
     position: absolute;
     top: 72px;
@@ -292,41 +706,23 @@ input[type="checkbox"] {
     color: var(--ink);
 }
 
-.map-measure-tools {
+.leaflet-top.leaflet-right {
-    position: absolute;
+    top: 68px;
-    top: 72px;
+    right: 2px;
-    right: 12px;
-    z-index: 860;
-    display: grid;
-    grid-template-columns: auto repeat(3, minmax(76px, auto));
-    align-items: center;
-    gap: 6px;
-    padding: 7px;
-    border: 1px solid rgba(255, 255, 255, 0.7);
-    border-radius: 8px;
-    background: rgba(255, 255, 255, 0.96);
-    box-shadow: 0 3px 14px rgba(0, 0, 0, 0.2);
-    transition: top 140ms ease;
 }
 
-.map-measure-tools > span {
+.map-stage.search-active .leaflet-top.leaflet-right {
-    padding: 0 4px;
+    top: 136px;
-    color: var(--muted);
-    font-size: 10px;
-    font-weight: 800;
-    text-transform: uppercase;
 }
 
-.map-measure-tools button {
+.leaflet-touch .leaflet-draw-toolbar a {
-    min-height: 38px;
+    width: 38px;
-    padding: 0 10px;
+    height: 38px;
-    background: #fff3e8;
-    color: #8a3a08;
-    border: 1px solid #e4b58f;
 }
 
-.map-measure-tools.search-open {
+.lme-drawing-scope-actions a[aria-disabled="true"] {
-    top: 140px;
+    opacity: 0.45;
+    pointer-events: none;
 }
 
 .tool-sheet {
@@ -697,7 +1093,7 @@ label {
     left: 0;
     z-index: 1200;
     display: grid;
-    grid-template-columns: repeat(5, minmax(0, 1fr));
+    grid-template-columns: repeat(6, minmax(0, 1fr));
     height: var(--nav-height);
     padding-bottom: env(safe-area-inset-bottom);
     border-top: 1px solid #bcc7cd;
@@ -755,16 +1151,6 @@ footer {
     display: none;
 }
 
-@media (min-width: 701px) and (max-width: 900px) {
-    .map-measure-tools {
-        top: 126px;
-    }
-
-    .map-measure-tools.search-open {
-        top: 194px;
-    }
-}
-
 @media (max-width: 700px) {
     .map-toolbar {
         top: 8px;
@@ -781,8 +1167,8 @@ footer {
     .map-layer-panel {
         top: 68px;
         right: 8px;
-        width: min(320px, calc(100% - 16px));
+        bottom: calc(var(--nav-height) + 8px);
-        max-height: calc(100% - 144px);
+        width: 50vw;
     }
 
     .tool-sheet {
@@ -808,20 +1194,13 @@ footer {
         top: 136px;
     }
 
-    .map-measure-tools,
+    .leaflet-top.leaflet-right {
-    .map-measure-tools.search-open {
+        top: 122px;
-        top: 126px;
+        right: 0;
-        right: 8px;
-        left: 8px;
-        grid-template-columns: repeat(3, minmax(0, 1fr));
     }
 
-    .map-measure-tools.search-open {
+    .map-stage.search-active .leaflet-top.leaflet-right {
-        top: 194px;
+        top: 190px;
-    }
-
-    .map-measure-tools > span {
-        display: none;
     }
 
     .gps-main,
@@ -841,7 +1220,8 @@ footer {
     }
 
     .bottom-tabs button {
-        font-size: 11px;
+        padding: 0 2px;
+        font-size: 10px;
     }
 
     .wms-preview {
@@ -863,6 +1243,6 @@ footer {
     }
 
     .bottom-tabs button {
-        font-size: 10px;
+        font-size: 9px;
     }
 }

wwwroot/index.html

@@ -31,6 +31,7 @@
     <script src="lib/googlemutant/Leaflet.GoogleMutant.js"></script>
     <script src="lib/jszip/jszip.min.js"></script>
     <script src="lib/togeojson/togeojson.umd.js"></script>
+    <script src="lib/turf/turf.min.js"></script>
     <script src="js/lme-map.js"></script>
 
 </body>

wwwroot/lib/turf/turf.min.js

@@ -0,0 +1,37 @@
+!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?e(exports):"function"==typeof define&&define.amd?define(["exports"],e):e((t="undefined"!=typeof globalThis?globalThis:t||self).turf={})}(this,(function(t){"use strict";function e(t,e){(null==e||e>t.length)&&(e=t.length);for(var n=0,r=Array(e);n<e;n++)r[n]=t[n];return r}function n(t){if(Array.isArray(t))return t}function r(t,e,n){return e=l(e),function(t,e){if(e&&("object"==typeof e||"function"==typeof e))return e;if(void 0!==e)throw new TypeError("Derived constructors may only return object or undefined");return function(t){if(void 0===t)throw new ReferenceError("this hasn't been initialised - super() hasn't been called");return t}(t)}(t,c()?Reflect.construct(e,n||[],l(t).constructor):e.apply(t,n))}function i(t,e){if(!(t instanceof e))throw new TypeError("Cannot call a class as a function")}function o(t,e){for(var n=0;n<e.length;n++){var r=e[n];r.enumerable=r.enumerable||!1,r.configurable=!0,"value"in r&&(r.writable=!0),Object.defineProperty(t,y(r.key),r)}}function s(t,e,n){return e&&o(t.prototype,e),n&&o(t,n),Object.defineProperty(t,"prototype",{writable:!1}),t}function a(t,e){var n="undefined"!=typeof Symbol&&t[Symbol.iterator]||t["@@iterator"];if(!n){if(Array.isArray(t)||(n=_(t))||e){n&&(t=n);var r=0,i=function(){};return{s:i,n:function(){return r>=t.length?{done:!0}:{done:!1,value:t[r++]}},e:function(t){throw t},f:i}}throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.")}var o,s=!0,a=!1;return{s:function(){n=n.call(t)},n:function(){var t=n.next();return s=t.done,t},e:function(t){a=!0,o=t},f:function(){try{s||null==n.return||n.return()}finally{if(a)throw o}}}}function u(t,e,n){return(e=y(e))in t?Object.defineProperty(t,e,{value:n,enumerable:!0,configurable:!0,writable:!0}):t[e]=n,t}function l(t){return l=Object.setPrototypeOf?Object.getPrototypeOf.bind():function(t){return t.__proto__||Object.getPrototypeOf(t)},l(t)}function h(t,e){if("function"!=typeof e&&null!==e)throw new TypeError("Super expression must either be null or a function");t.prototype=Object.create(e&&e.prototype,{constructor:{value:t,writable:!0,configurable:!0}}),Object.defineProperty(t,"prototype",{writable:!1}),e&&p(t,e)}function c(){try{var t=!Boolean.prototype.valueOf.call(Reflect.construct(Boolean,[],(function(){})))}catch(t){}return(c=function(){return!!t})()}function f(t){if("undefined"!=typeof Symbol&&null!=t[Symbol.iterator]||null!=t["@@iterator"])return Array.from(t)}function g(){throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.")}function p(t,e){return p=Object.setPrototypeOf?Object.setPrototypeOf.bind():function(t,e){return t.__proto__=e,t},p(t,e)}function v(t,e){return n(t)||function(t,e){var n=null==t?null:"undefined"!=typeof Symbol&&t[Symbol.iterator]||t["@@iterator"];if(null!=n){var r,i,o,s,a=[],u=!0,l=!1;try{if(o=(n=n.call(t)).next,0===e){if(Object(n)!==n)return;u=!1}else for(;!(u=(r=o.call(n)).done)&&(a.push(r.value),a.length!==e);u=!0);}catch(t){l=!0,i=t}finally{try{if(!u&&null!=n.return&&(s=n.return(),Object(s)!==s))return}finally{if(l)throw i}}return a}}(t,e)||_(t,e)||g()}function d(t){return function(t){if(Array.isArray(t))return e(t)}(t)||f(t)||_(t)||function(){throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.")}()}function y(t){var e=function(t,e){if("object"!=typeof t||!t)return t;var n=t[Symbol.toPrimitive];if(void 0!==n){var r=n.call(t,e||"default");if("object"!=typeof r)return r;throw new TypeError("@@toPrimitive must return a primitive value.")}return("string"===e?String:Number)(t)}(t,"string");return"symbol"==typeof e?e:e+""}function m(t){return m="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(t){return typeof t}:function(t){return t&&"function"==typeof Symbol&&t.constructor===Symbol&&t!==Symbol.prototype?"symbol":typeof t},m(t)}function _(t,n){if(t){if("string"==typeof t)return e(t,n);var r={}.toString.call(t).slice(8,-1);return"Object"===r&&t.constructor&&(r=t.constructor.name),"Map"===r||"Set"===r?Array.from(t):"Arguments"===r||/^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(r)?e(t,n):void 0}}var x=6371008.8,E={centimeters:100*x,centimetres:100*x,degrees:360/(2*Math.PI),feet:3.28084*x,inches:39.37*x,kilometers:x/1e3,kilometres:x/1e3,meters:x,metres:x,miles:x/1609.344,millimeters:1e3*x,millimetres:1e3*x,nauticalmiles:x/1852,radians:1,yards:1.0936*x},k={acres:247105e-9,centimeters:1e4,centimetres:1e4,feet:10.763910417,hectares:1e-4,inches:1550.003100006,kilometers:1e-6,kilometres:1e-6,meters:1,metres:1,miles:386e-9,nauticalmiles:2.9155334959812285e-7,millimeters:1e6,millimetres:1e6,yards:1.195990046};function b(t,e){var n=arguments.length>2&&void 0!==arguments[2]?arguments[2]:{},r={type:"Feature"};return(0===Line truncated
+/*!
+   * Copyright (c) 2019, Dane Springmeyer
+   *
+   * Redistribution and use in source and binary forms, with or without
+   * modification, are permitted provided that the following conditions are
+   * met:
+   *
+   *     * Redistributions of source code must retain the above copyright
+   *       notice, this list of conditions and the following disclaimer.
+   *     * Redistributions in binary form must reproduce the above copyright
+   *       notice, this list of conditions and the following disclaimer in
+   *       the documentation and/or other materials provided with the
+   *       distribution.
+   *
+   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+   * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+   * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+   * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+   */
+function ta(t){var e=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{},n=[];if(mt(t,(function(t){n.push(t.coordinates)})),n.length<2)throw new Error("Must specify at least 2 geometries");var r=Rs.apply(Fs,[n[0]].concat(d(n.slice(1))));return 0===r.length?null:1===r.length?S(r[0],e.properties):R(r,e.properties)}function ea(t,e){var n=arguments.length>2&&void 0!==arguments[2]?arguments[2]:{},r=JSON.stringify(n.properties||{}),i=v(t,4),o=i[0],s=i[1],a=i[2],u=i[3],l=(s+u)/2,h=(o+a)/2,c=2*e/ut([o,l],[a,l],n)*(a-o),f=2*e/ut([h,s],[h,u],n)*(u-s),g=c/2,p=2*g,d=Math.sqrt(3)/2*f,y=a-o,m=u-s,_=3/4*p,x=d,E=(y-p)/(p-g/2),k=Math.floor(E),b=(k*_-g/2-y)/2-g/2+_/2,w=Math.floor((m-d)/d),I=(m-w*d)/2,N=w*d-m>d/2;N&&(I-=d/4);for(var S=[],M=[],L=0;L<6;L++){var P=2*Math.PI/6*L;S.push(Math.cos(P)),M.push(Math.sin(P))}for(var T=[],O=0;O<=k;O++)for(var R=0;R<=w;R++){var A=O%2==1;if((0!==R||!A)&&(0!==R||!N)){var D=O*_+o-b,F=R*x+s+I;if(A&&(F-=d/2),!0===n.triangles)ra([D,F],c/2,f/2,JSON.parse(r),S,M).forEach((function(t){n.mask?ta(C([n.mask,t]))&&T.push(t):T.push(t)}));else{var q=na([D,F],c/2,f/2,JSON.parse(r),S,M);n.mask?ta(C([n.mask,q]))&&T.push(q):T.push(q)}}}return C(T)}function na(t,e,n,r,i,o){for(var s=[],a=0;a<6;a++){var u=t[0]+e*i[a],l=t[1]+n*o[a];s.push([u,l])}return s.push(s[0].slice()),S([s],r)}function ra(t,e,n,r,i,o){for(var s=[],a=0;a<6;a++){var u=[];u.push(t),u.push([t[0]+e*i[a],t[1]+n*o[a]]),u.push([t[0]+e*i[(a+1)%6],t[1]+n*o[(a+1)%6]]),u.push(t),s.push(S([u],r))}return s}function ia(t,e){var n=arguments.length>2&&void 0!==arguments[2]?arguments[2]:{};n.mask&&!n.units&&(n.units="kilometers");for(var r=[],i=t[0],o=t[1],s=t[2],a=t[3],u=e/ut([i,o],[s,o],n)*(s-i),l=e/ut([i,o],[i,a],n)*(a-o),h=s-i,c=a-o,f=Math.floor(h/u),g=(c-Math.floor(c/l)*l)/2,p=i+(h-f*u)/2;p<=s;){for(var v=o+g;v<=a;){var d=I([p,v],n.properties);n.mask?Cn(d,n.mask)&&r.push(d):r.push(d),v+=l}p+=u}return C(r)}function oa(t,e,n){for(var r=arguments.length>3&&void 0!==arguments[3]?arguments[3]:{},i=[],o=t[0],s=t[1],a=t[2],u=t[3],l=a-o,h=j(e,r.units,"degrees"),c=u-s,f=j(n,r.units,"degrees"),g=Math.floor(Math.abs(l)/h),p=Math.floor(Math.abs(c)/f),v=(c-p*f)/2,d=o+(l-g*h)/2,y=0;y<g;y++){for(var m=s+v,_=0;_<p;_++){var x=S([[[d,m],[d,m+f],[d+h,m+f],[d+h,m],[d,m]]],r.properties);r.mask?Oe(r.mask,x)&&i.push(x):i.push(x),m+=f}d+=h}return C(i)}function sa(t,e){return oa(t,e,e,arguments.length>2&&void 0!==arguments[2]?arguments[2]:{})}function aa(t,e){for(var n=arguments.length>2&&void 0!==arguments[2]?arguments[2]:{},r=[],i=e/ut([t[0],t[1]],[t[2],t[1]],n)*(t[2]-t[0]),o=e/ut([t[0],t[1]],[t[0],t[3]],n)*(t[3]-t[1]),s=0,a=t[0];a<=t[2];){for(var u=0,l=t[1];l<=t[3];){var h=null,c=null;s%2==0&&u%2==0?(h=S([[[a,l],[a,l+o],[a+i,l],[a,l]]],n.properties),c=S([[[a,l+o],[a+i,l+o],[a+i,l],[a,l+o]]],n.properties)):s%2==0&&u%2==1?(h=S([[[a,l],[a+i,l+o],[a+i,l],[a,l]]],n.properties),c=S([[[a,l],[a,l+o],[a+i,l+o],[a,l]]],n.properties)):u%2==0&&s%2==1?(h=S([[[a,l],[a,l+o],[a+i,l+o],[a,l]]],n.properties),c=S([[[a,l],[a+i,l+o],[a+i,l],[a,l]]],n.properties)):u%2==1&&s%2==1&&(h=S([[[a,l],[a,l+o],[a+i,l],[a,l]]],n.properties),c=S([[[a,l+o],[a+i,l+o],[a+i,l],[a,l+o]]],n.properties)),n.mask?(ta(C([n.mask,h]))&&r.push(h),ta(C([n.mask,c]))&&r.push(c)):(r.push(h),r.push(c)),l+=o,u++}s++,a+=i}return C(r)}
+/*!
+  * MarchingSquaresJS
+  * version 1.3.3
+  * https://github.com/RaumZeit/MarchingSquares.js
+  *
+  * @license GNU Affero General Public License.
+  * Copyright (c) 2015-2019 Ronny Lorenz <ronny@tbi.univie.ac.at>
+  */
+function ua(t,e,n){return t<e?(n-t)/(e-t):(t-n)/(t-e)}function la(t,e,n,r){var i;return n>r&&(i=n,n=r,r=i),t<e?t<n?(n-t)/(e-t):(r-t)/(e-t):t>r?(t-r)/(t-e):(t-n)/(t-e)}function ha(t,e,n,r){return t<e?(n-t)/(e-t):(t-r)/(t-e)}function ca(t,e,n,r){return t<e?(r-t)/(e-t):(t-n)/(t-e)}function fa(){this.successCallback=null,this.verbose=!1,this.polygons=!1,this.polygons_full=!1,this.linearRing=!0,this.noQuadTree=!1,this.noFrame=!1}function ga(t,e,n,r){var i=[];return t.polygons.forEach((function(t){t.forEach((function(t){t[0]+=e,t[1]+=n})),r.linearRing&&t.push(t[0]),i.push(t)})),i}function pa(t,e,n,r){return 0===n?(t+=1,e+=r[0][1]):1===n?t+=r[0][0]:2===n?e+=r[0][1]:3===n&&(t+=r[0][0],e+=1),[t,e]}function va(t,e,n){return 0===n?t++:1===n||(2===n?e++:3===n&&(t++,e++)),[t,e]}function da(t,e,n,r,i){var 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