Mapper navigation mode integration

src/mapper/src/lib/components/map/geolocation.svelte

@@ -1,23 +1,43 @@
 <script lang="ts">
-	import { GeoJSON, SymbolLayer } from 'svelte-maplibre';
+	import { GeoJSON, SymbolLayer, type LngLatLike } from 'svelte-maplibre';
 	import type { FeatureCollection } from 'geojson';
 
 	import { GetDeviceRotation } from '$lib/utils/getDeviceRotation';
 	import { getAlertStore } from '$store/common.svelte.ts';
-
-	const alertStore = getAlertStore();
+	import { getCommonStore } from '$store/common.svelte.ts';
 
 	interface Props {
 		map: maplibregl.Map | undefined;
-		toggleGeolocationStatus?: boolean;
+		toggleGeolocationStatus: boolean;
+		toggleNavigationMode: boolean;
 	}
 
-	let { map = $bindable(), toggleGeolocationStatus = $bindable(false) }: Props = $props();
+	const alertStore = getAlertStore();
+	const commonStore = getCommonStore();
+
+	let { map, toggleGeolocationStatus, toggleNavigationMode }: Props = $props();
 
-	let coords: [number, number] | undefined = $state();
+	let coords: LngLatLike | undefined = $state();
 	let rotationDeg: number | undefined = $state();
 	let watchId: number | undefined = $state();
 
+	// if bottom sheet is open, add bottom padding for better visibility of location arrow
+	$effect(() => {
+		if (commonStore.selectedTab === 'map') {
+			map?.setPadding({ bottom: 0, top: 0, left: 0, right: 0 });
+		} else {
+			map?.setPadding({ bottom: 300, top: 0, left: 0, right: 0 });
+		}
+	});
+
+	// zoom to user's current location
+	$effect(() => {
+		if (toggleNavigationMode) {
+			map?.setCenter(coords as LngLatLike);
+			map?.setZoom(18);
+		}
+	});
+
 	$effect(() => {
 		if (map && toggleGeolocationStatus) {
 			// zoom to user's current location
@@ -34,6 +54,10 @@
 			watchId = navigator.geolocation.watchPosition(
 				function (pos) {
 					coords = [pos.coords.longitude, pos.coords.latitude];
+					if (toggleNavigationMode) {
+						// if user is in navigation mode, update the map center according to user's live location since swiping map isn't possible
+						map?.setCenter(coords);
+					}
 				},
 				function (error) {
 					alert(`ERROR: ${error.message}`);
@@ -91,6 +115,9 @@
 				});
 				sensor.addEventListener('reading', (event: Event) => {
 					rotationDeg = GetDeviceRotation(sensor.quaternion);
+
+					// rotate map according to device orientation
+					if (toggleNavigationMode) map.rotateTo(rotationDeg || 0, { duration: 0 });
 				});
 
 				Promise.all([
@@ -114,7 +141,9 @@
 		hoverCursor="pointer"
 		layout={{
 			// if orientation true (meaning the browser supports device orientation sensor show location dot with orientation sign)
-			'icon-image': ['case', ['==', ['get', 'orientation'], true], 'locationArc', 'locationDot'],
+			'icon-image': !toggleNavigationMode
+				? ['case', ['==', ['get', 'orientation'], true], 'locationArc', 'locationDot']
+				: ['case', ['==', ['get', 'orientation'], true], 'arrow', 'locationDot'],
 			'icon-allow-overlap': true,
 			'text-offset': [0, -2],
 			'text-size': 12,

src/mapper/src/lib/components/map/main.svelte

@@ -1,7 +1,7 @@
 <script lang="ts">
 	import '$styles/page.css';
 	import '$styles/button.css';
-	import '@watergis/maplibre-gl-terradraw/dist/maplibre-gl-terradraw.css'
+	import '@watergis/maplibre-gl-terradraw/dist/maplibre-gl-terradraw.css';
 	import '@hotosm/ui/dist/hotosm-ui';
 	import { onMount } from 'svelte';
 	import {
@@ -18,7 +18,7 @@
 		ControlButton,
 	} from 'svelte-maplibre';
 	import maplibre from 'maplibre-gl';
-	import MaplibreTerradrawControl from '@watergis/maplibre-gl-terradraw'
+	import MaplibreTerradrawControl from '@watergis/maplibre-gl-terradraw';
 	import { Protocol } from 'pmtiles';
 	import { polygon } from '@turf/helpers';
 	import { buffer } from '@turf/buffer';
@@ -29,6 +29,7 @@
 	import LocationDotImg from '$assets/images/locationDot.png';
 	import BlackLockImg from '$assets/images/black-lock.png';
 	import RedLockImg from '$assets/images/red-lock.png';
+	import Arrow from '$assets/images/arrow.png';
 
 	import Legend from '$lib/components/map/legend.svelte';
 	import LayerSwitcher from '$lib/components/map/layer-switcher.svelte';
@@ -55,7 +56,15 @@
 		handleDrawnGeom?: ((geojson: GeoJSONGeometry) => void) | null;
 	}
 
-	let { projectOutlineCoords, entitiesUrl, toggleActionModal, projectId, setMapRef, draw = false, handleDrawnGeom }: Props = $props();
+	let {
+		projectOutlineCoords,
+		entitiesUrl,
+		toggleActionModal,
+		projectId,
+		setMapRef,
+		draw = false,
+		handleDrawnGeom,
+	}: Props = $props();
 
 	const taskStore = getTaskStore();
 	const projectSetupStepStore = getProjectSetupStepStore();
@@ -67,6 +76,7 @@
 	let selectedBaselayer: string = $state('OSM');
 	let taskAreaClicked: boolean = $state(false);
 	let toggleGeolocationStatus: boolean = $state(false);
+	let toggleNavigationMode: boolean = $state(false);
 	let projectSetupStep = $state(null);
 	// Trigger adding the PMTiles layer to baselayers, if PmtilesUrl is set
 	let allBaseLayers: maplibregl.StyleSpecification[] = $derived(
@@ -183,18 +193,18 @@
 	// Workaround due to bug in @watergis/mapbox-gl-terradraw
 	function removeTerraDrawLayers() {
 		if (map) {
-				if (map.getLayer('td-point')) map.removeLayer('td-point');
-				if (map.getSource('td-point')) map.removeSource('td-point');
+			if (map.getLayer('td-point')) map.removeLayer('td-point');
+			if (map.getSource('td-point')) map.removeSource('td-point');
 
-				if (map.getLayer('td-linestring')) map.removeLayer('td-linestring');
-				if (map.getSource('td-linestring')) map.removeSource('td-linestring');
+			if (map.getLayer('td-linestring')) map.removeLayer('td-linestring');
+			if (map.getSource('td-linestring')) map.removeSource('td-linestring');
 
-				if (map.getLayer('td-polygon')) map.removeLayer('td-polygon');
-				if (map.getSource('td-polygon')) map.removeSource('td-polygon');
+			if (map.getLayer('td-polygon')) map.removeLayer('td-polygon');
+			if (map.getSource('td-polygon')) map.removeSource('td-polygon');
 
-				if (map.getLayer('td-polygon-outline')) map.removeLayer('td-polygon-outline');
-				if (map.getSource('td-polygon-outline')) map.removeSource('td-polygon-outline');
-			}
+			if (map.getLayer('td-polygon-outline')) map.removeLayer('td-polygon-outline');
+			if (map.getSource('td-polygon-outline')) map.removeSource('td-polygon-outline');
+		}
 	}
 	// Add draw layer & handle emitted geom
 	$effect(() => {
@@ -224,7 +234,7 @@
 						handleDrawnGeom(firstGeom);
 					}
 				});
-			};
+			}
 		} else {
 			removeTerraDrawLayers();
 			map?.removeControl(drawControl);
@@ -269,6 +279,20 @@
 		}
 	}
 
+	// if navigation mode on, tilt map by 50 degrees
+	$effect(() => {
+		if (toggleNavigationMode && toggleGeolocationStatus) {
+			map?.setPitch(50);
+		} else {
+			map?.setPitch(0);
+		}
+	});
+
+	// if map loaded, turn on geolocation by default
+	$effect(() => {
+		if (loaded) toggleGeolocationStatus = true;
+	});
+
 	onMount(async () => {
 		// Register pmtiles protocol
 		if (!maplibre.config.REGISTERED_PROTOCOLS.hasOwnProperty('pmtiles')) {
@@ -308,14 +332,19 @@
 		{ id: 'LOCKED_FOR_VALIDATION', url: RedLockImg },
 		{ id: 'locationArc', url: LocationArcImg },
 		{ id: 'locationDot', url: LocationDotImg },
+		{ id: 'arrow', url: Arrow },
 	]}
 >
 	<!-- Controls -->
 	<NavigationControl position="top-left" />
 	<ScaleControl />
 	<Control class="flex flex-col gap-y-2" position="top-left">
 		<ControlGroup>
-			<ControlButton on:click={() => (toggleGeolocationStatus = !toggleGeolocationStatus)}
+			<ControlButton
+				on:click={() => {
+					toggleGeolocationStatus = !toggleGeolocationStatus;
+					toggleNavigationMode = false;
+				}}
 				><hot-icon
 					name="geolocate"
 					class={`!text-[1.2rem] cursor-pointer  duration-200 ${toggleGeolocationStatus ? 'text-red-600' : 'text-[#52525B]'}`}
@@ -331,6 +360,16 @@
 			>
 		</ControlGroup></Control
 	>
+	<Control class="flex flex-col gap-y-2" position="top-left">
+		<ControlGroup>
+			<ControlButton on:click={() => (toggleNavigationMode = !toggleNavigationMode)}
+				><hot-icon
+					name="send"
+					class={`!text-[1.2rem] cursor-pointer duration-200 ${toggleNavigationMode ? 'text-red-600' : 'text-[#52525B]'}`}
+				></hot-icon></ControlButton
+			>
+		</ControlGroup></Control
+	>
 	<Control class="flex flex-col gap-y-2" position="bottom-right">
 		<LayerSwitcher
 			{map}
@@ -342,7 +381,7 @@
 	</Control>
 	<!-- Add the Geolocation GeoJSON layer to the map -->
 	{#if toggleGeolocationStatus}
-		<Geolocation bind:map bind:toggleGeolocationStatus></Geolocation>
+		<Geolocation {map} {toggleGeolocationStatus} {toggleNavigationMode}></Geolocation>
 	{/if}
 	<!-- The task area geojson -->
 	<GeoJSON id="tasks" data={taskStore.featcol} promoteId="fid">

src/mapper/src/routes/[projectId]/+page.svelte

@@ -23,7 +23,7 @@
 	import { getTaskStore, getTaskEventStream } from '$store/tasks.svelte.ts';
 	import { getEntitiesStatusStore, getEntityStatusStream } from '$store/entities.svelte.ts';
 	import More from '$lib/components/more/index.svelte';
-	import { getProjectSetupStepStore } from '$store/common.svelte.ts';
+	import { getProjectSetupStepStore, getCommonStore } from '$store/common.svelte.ts';
 	import { projectSetupStep as projectSetupStepEnum } from '$constants/enums.ts';
 
 	interface Props {
@@ -34,14 +34,15 @@
 
 	let maplibreMap: maplibregl.Map | undefined = $state(undefined);
 	let tabGroup: SlTabGroup;
-	let selectedTab: string = $state('map');
 	let openedActionModal: 'entity-modal' | 'task-modal' | null = $state(null);
 	let isTaskActionModalOpen: boolean = $state(false);
 	let infoDialogRef: SlDialog | null = $state(null);
 	let isDrawEnabled: boolean = $state(false);
 
 	const taskStore = getTaskStore();
 	const entitiesStore = getEntitiesStatusStore();
+	const commonStore = getCommonStore();
+
 	const taskEventStream = getTaskEventStream(data.projectId);
 	const entityStatusStream = getEntityStatusStream(data.projectId);
 
@@ -136,7 +137,7 @@
 		toggleTaskActionModal={(value) => {
 			openedActionModal = value ? 'task-modal' : null;
 		}}
-		{selectedTab}
+		selectedTab={commonStore.selectedTab}
 		projectData={data?.project}
 		clickMapNewFeature={() => {
 			openedActionModal = null;
@@ -148,18 +149,18 @@
 		toggleTaskActionModal={(value) => {
 			openedActionModal = value ? 'entity-modal' : null;
 		}}
-		{selectedTab}
+		selectedTab={commonStore.selectedTab}
 		projectData={data?.project}
 	/>
-	{#if selectedTab !== 'map'}
+	{#if commonStore.selectedTab !== 'map'}
 		<BottomSheet onClose={() => tabGroup.show('map')}>
-			{#if selectedTab === 'events'}
+			{#if commonStore.selectedTab === 'events'}
 				<More projectData={data?.project} zoomToTask={(taskId) => zoomToTask(taskId)}></More>
 			{/if}
-			{#if selectedTab === 'offline'}
+			{#if commonStore.selectedTab === 'offline'}
 				<BasemapComponent projectId={data.project.id}></BasemapComponent>
 			{/if}
-			{#if selectedTab === 'qrcode'}
+			{#if commonStore.selectedTab === 'qrcode'}
 				<QRCodeComponent {infoDialogRef} projectName={data.project.name} projectOdkToken={data.project.odk_token}>
 					<!-- Open ODK Button (Hide if it's project walkthrough step) -->
 					{#if +projectSetupStepStore.projectSetupStep !== projectSetupStepEnum['odk_project_load']}
@@ -210,7 +211,7 @@
 		placement="bottom"
 		no-scroll-controls
 		onsl-tab-show={(e: CustomEvent<{ name: string }>) => {
-			selectedTab = e.detail.name;
+			commonStore.setSelectedTab(e.detail.name);
 			if (
 				e.detail.name !== 'qrcode' &&
 				+projectSetupStepStore.projectSetupStep === projectSetupStepEnum['odk_project_load']

src/mapper/src/store/common.svelte.ts

@@ -10,6 +10,16 @@ let alert: AlertDetails | undefined = $state({ variant: null, message: '' });
 let projectSetupStep: number | null = $state(null);
 let projectBasemaps: Basemap[] = $state([]);
 let projectPmtilesUrl: string | null = $state(null);
+let selectedTab: string = $state('map');
+
+function getCommonStore() {
+	return {
+		get selectedTab() {
+			return selectedTab;
+		},
+		setSelectedTab: (tab: string) => (selectedTab = tab),
+	};
+}
 
 function getAlertStore() {
 	return {
@@ -61,4 +71,4 @@ function getProjectBasemapStore() {
 	};
 }
 
-export { getAlertStore, getProjectSetupStepStore, getProjectBasemapStore };
+export { getAlertStore, getProjectSetupStepStore, getProjectBasemapStore, getCommonStore };