Refactoring: allow to export the map as PNG

Models/Constants.ts

@@ -1,5 +1,7 @@
 import { Utils } from "../Utils"
 
+export type PriviligedLayerType = typeof Constants.priviliged_layers[number]
+
 export default class Constants {
     public static vNumber = "0.30.0"
 

Models/MapProperties.ts

@@ -15,3 +15,7 @@ export interface MapProperties {
 
     readonly allowZooming: UIEventSource<true | boolean>
 }
+
+export interface ExportableMap {
+    exportAsPng(): Promise<Blob>
+}

Models/MenuState.ts

@@ -2,6 +2,7 @@ import LayerConfig from "./ThemeConfig/LayerConfig"
 import { UIEventSource } from "../Logic/UIEventSource"
 import UserRelatedState from "../Logic/State/UserRelatedState"
 import { Utils } from "../Utils"
+import { LocalStorageSource } from "../Logic/Web/LocalStorageSource"
 
 /**
  * Indicates if a menu is open, and if so, which tab is selected;
@@ -11,12 +12,12 @@ import { Utils } from "../Utils"
  */
 export class MenuState {
     private static readonly _themeviewTabs = ["intro", "filters", "download", "copyright"] as const
-    public readonly themeIsOpened = new UIEventSource(true)
+    public readonly themeIsOpened: UIEventSource<boolean>
     public readonly themeViewTabIndex: UIEventSource<number>
     public readonly themeViewTab: UIEventSource<typeof MenuState._themeviewTabs[number]>
 
     private static readonly _menuviewTabs = ["about", "settings", "community", "privacy"] as const
-    public readonly menuIsOpened = new UIEventSource(false)
+    public readonly menuIsOpened: UIEventSource<boolean>
     public readonly menuViewTabIndex: UIEventSource<number>
     public readonly menuViewTab: UIEventSource<typeof MenuState._menuviewTabs[number]>
 
@@ -24,15 +25,20 @@ export class MenuState {
         undefined
     )
     public highlightedUserSetting: UIEventSource<string> = new UIEventSource<string>(undefined)
-    constructor() {
+    constructor(themeid: string = "") {
-        this.themeViewTabIndex = new UIEventSource(0)
+        if (themeid) {
+            themeid += "-"
+        }
+        this.themeIsOpened = LocalStorageSource.GetParsed(themeid + "thememenuisopened", true)
+        this.themeViewTabIndex = LocalStorageSource.GetParsed(themeid + "themeviewtabindex", 0)
         this.themeViewTab = this.themeViewTabIndex.sync(
             (i) => MenuState._themeviewTabs[i],
             [],
             (str) => MenuState._themeviewTabs.indexOf(<any>str)
         )
 
-        this.menuViewTabIndex = new UIEventSource(1)
+        this.menuIsOpened = LocalStorageSource.GetParsed(themeid + "menuisopened", false)
+        this.menuViewTabIndex = LocalStorageSource.GetParsed(themeid + "menuviewtabindex", 0)
         this.menuViewTab = this.menuViewTabIndex.sync(
             (i) => MenuState._menuviewTabs[i],
             [],

Models/ThemeConfig/LayerConfig.ts

@@ -424,7 +424,7 @@ export default class LayerConfig extends WithContextLoader {
         if (mapRendering === undefined) {
             return undefined
         }
-        return mapRendering.GetBaseIcon(this.GetBaseTags())
+        return mapRendering.GetBaseIcon(this.GetBaseTags(), { noFullWidth: true })
     }
 
     public GetBaseTags(): Record<string, string> {

Models/ThemeConfig/PointRenderingConfig.ts

@@ -136,7 +136,10 @@ export default class PointRenderingConfig extends WithContextLoader {
         multiSpec: string,
         rotation: string,
         isBadge: boolean,
-        defaultElement: BaseUIElement = undefined
+        defaultElement: BaseUIElement = undefined,
+        options?: {
+            noFullWidth?: boolean
+        }
     ) {
         if (multiSpec === undefined) {
             return defaultElement
@@ -150,11 +153,21 @@ export default class PointRenderingConfig extends WithContextLoader {
         if (elements.length === 0) {
             return defaultElement
         } else {
-            return new Combine(elements).SetClass("relative block w-full h-full")
+            const combine = new Combine(elements).SetClass("relative block")
+            if (options?.noFullWidth) {
+                return combine
+            }
+            combine.SetClass("w-full h-full")
+            return combine
         }
     }
 
-    public GetBaseIcon(tags?: Record<string, string>): BaseUIElement {
+    public GetBaseIcon(
+        tags?: Record<string, string>,
+        options?: {
+            noFullWidth?: boolean
+        }
+    ): BaseUIElement {
         tags = tags ?? { id: "node/-1" }
         let defaultPin: BaseUIElement = undefined
         if (this.label === undefined) {
@@ -176,7 +189,7 @@ export default class PointRenderingConfig extends WithContextLoader {
             // This is probably already prepared HTML
             return new FixedUiElement(Utils.SubstituteKeys(htmlDefs, tags))
         }
-        return PointRenderingConfig.FromHtmlMulti(htmlDefs, rotation, false, defaultPin)
+        return PointRenderingConfig.FromHtmlMulti(htmlDefs, rotation, false, defaultPin, options)
     }
 
     public GetSimpleIcon(tags: Store<Record<string, string>>): BaseUIElement {

Models/ThemeViewState.ts

@@ -8,7 +8,7 @@ import {
     WritableFeatureSource,
 } from "../Logic/FeatureSource/FeatureSource"
 import { OsmConnection } from "../Logic/Osm/OsmConnection"
-import { MapProperties } from "./MapProperties"
+import { ExportableMap, MapProperties } from "./MapProperties"
 import LayerState from "../Logic/State/LayerState"
 import { Feature } from "geojson"
 import FullNodeDatabaseSource from "../Logic/FeatureSource/TiledFeatureSource/FullNodeDatabaseSource"
@@ -63,7 +63,7 @@ export default class ThemeViewState implements SpecialVisualizationState {
 
     readonly osmConnection: OsmConnection
     readonly selectedElement: UIEventSource<Feature>
-    readonly mapProperties: MapProperties
+    readonly mapProperties: MapProperties & ExportableMap
 
     readonly dataIsLoading: Store<boolean> // TODO
     readonly guistate: MenuState
@@ -82,7 +82,7 @@ export default class ThemeViewState implements SpecialVisualizationState {
     readonly lastClickObject: WritableFeatureSource
     constructor(layout: LayoutConfig) {
         this.layout = layout
-        this.guistate = new MenuState()
+        this.guistate = new MenuState(layout.id)
         this.map = new UIEventSource<MlMap>(undefined)
         const initial = new InitialMapPositioning(layout)
         this.mapProperties = new MapLibreAdaptor(this.map, initial)

UI/BigComponents/AllDownloads.ts

@@ -86,12 +86,6 @@ export default class AllDownloads extends ScrollableFullScreen {
             state.featureSwitchExportAsPdf
         )
 
-        const exportPanel = new Toggle(
-            new DownloadPanel(state),
-            undefined,
-            state.featureSwitchEnableExport
-        )
 
-        return new Combine([pdf, exportPanel]).SetClass("flex flex-col")
+        return pdf
-    }
 }

UI/BigComponents/DownloadPanel.ts

@@ -17,6 +17,7 @@ import { SpecialVisualizationState } from "../SpecialVisualization"
 import { Feature, FeatureCollection } from "geojson"
 import { GeoIndexedStoreForLayer } from "../../Logic/FeatureSource/Actors/GeoIndexedStore"
 import LayerState from "../../Logic/State/LayerState"
+import { PriviligedLayerType } from "../../Models/Constants"
 
 export class DownloadPanel extends Toggle {
     constructor(state: SpecialVisualizationState) {
@@ -86,11 +87,37 @@ export class DownloadPanel extends Toggle {
             )
         })
 
+        const buttonPng = new SubtleButton(
+            Svg.floppy_ui(),
+            new Combine([t.downloadAsPng.SetClass("font-bold"), t.downloadAsPngHelper])
+        ).OnClickWithLoading(t.exporting, async () => {
+            const gpsLayer = state.layerState.filteredLayers.get(
+                <PriviligedLayerType>"gps_location"
+            )
+            const gpsIsDisplayed = gpsLayer.isDisplayed.data
+            try {
+                gpsLayer.isDisplayed.setData(false)
+                const png = await state.mapProperties.exportAsPng()
+                Utils.offerContentsAsDownloadableFile(
+                    png,
+                    `MapComplete_${name}_export_${new Date().toISOString().substr(0, 19)}.png`,
+                    {
+                        mimetype: "image/png",
+                    }
+                )
+            } catch (e) {
+                console.error(e)
+            } finally {
+                gpsLayer.isDisplayed.setData(gpsIsDisplayed)
+            }
+        })
+
         const downloadButtons = new Combine([
             new Title(t.title),
             buttonGeoJson,
             buttonCSV,
             buttonSvg,
+            buttonPng,
             includeMetaToggle,
             t.licenseInfo.SetClass("link-underline"),
         ]).SetClass("w-full flex flex-col")

UI/BigComponents/LeftControls.ts

@@ -56,20 +56,10 @@ export default class LeftControls extends Combine {
         )
 
         new AllDownloads(guiState.downloadControlIsOpened, state)
-        const toggledDownload = new MapControlButton(Svg.download_svg()).onClick(() =>
-            guiState.downloadControlIsOpened.setData(true)
-        )
 
-        const downloadButton = new Toggle(
-            toggledDownload,
-            undefined,
-            state.featureSwitchEnableExport.map(
-                (downloadEnabled) => downloadEnabled || state.featureSwitchExportAsPdf.data,
-                [state.featureSwitchExportAsPdf]
-            )
-        )
 
-        super([currentViewAction, downloadButton])
+
+        super([currentViewAction])
 
         this.SetClass("flex flex-col")
     }

UI/Map/MapLibreAdaptor.ts

@@ -4,14 +4,15 @@ import { Map as MlMap } from "maplibre-gl"
 import { RasterLayerPolygon, RasterLayerProperties } from "../../Models/RasterLayers"
 import { Utils } from "../../Utils"
 import { BBox } from "../../Logic/BBox"
-import { MapProperties } from "../../Models/MapProperties"
+import { ExportableMap, MapProperties } from "../../Models/MapProperties"
 import SvelteUIElement from "../Base/SvelteUIElement"
 import MaplibreMap from "./MaplibreMap.svelte"
+import html2canvas from "html2canvas"
 
 /**
  * The 'MapLibreAdaptor' bridges 'MapLibre' with the various properties of the `MapProperties`
  */
-export class MapLibreAdaptor implements MapProperties {
+export class MapLibreAdaptor implements MapProperties, ExportableMap {
     private static maplibre_control_handlers = [
         // "scrollZoom",
         // "boxZoom",
@@ -125,23 +126,6 @@ export class MapLibreAdaptor implements MapProperties {
         this.bounds.addCallbackAndRunD((bounds) => self.setBounds(bounds))
     }
 
-    private updateStores() {
-        const map = this._maplibreMap.data
-        if (map === undefined) {
-            return
-        }
-        const dt = this.location.data
-        dt.lon = map.getCenter().lng
-        dt.lat = map.getCenter().lat
-        this.location.ping()
-        this.zoom.setData(Math.round(map.getZoom() * 10) / 10)
-        const bounds = map.getBounds()
-        const bbox = new BBox([
-            [bounds.getEast(), bounds.getNorth()],
-            [bounds.getWest(), bounds.getSouth()],
-        ])
-        this.bounds.setData(bbox)
-    }
     /**
      * Convenience constructor
      */
@@ -189,6 +173,113 @@ export class MapLibreAdaptor implements MapProperties {
         return url
     }
 
+    async exportAsPng(): Promise<Blob> {
+        const map = this._maplibreMap.data
+        if (map === undefined) {
+            return undefined
+        }
+
+        function setDPI(canvas, dpi) {
+            // Set up CSS size.
+            canvas.style.width = canvas.style.width || canvas.width + "px"
+            canvas.style.height = canvas.style.height || canvas.height + "px"
+
+            // Resize canvas and scale future draws.
+            const scaleFactor = dpi / 96
+            canvas.width = Math.ceil(canvas.width * scaleFactor)
+            canvas.height = Math.ceil(canvas.height * scaleFactor)
+            const ctx = canvas.getContext("2d")
+            ctx?.scale(scaleFactor, scaleFactor)
+        }
+
+        // Total hack - see https://stackoverflow.com/questions/42483449/mapbox-gl-js-export-map-to-png-or-pdf
+
+        const drawOn = document.createElement("canvas")
+        drawOn.width = document.documentElement.clientWidth
+        drawOn.height = document.documentElement.clientHeight
+
+        setDPI(drawOn, 4 * 96)
+
+        const destinationCtx = drawOn.getContext("2d")
+        {
+            // First, we draw the maplibre-map onto the canvas. This does not export markers
+            // Inspiration by https://github.com/mapbox/mapbox-gl-js/issues/2766
+
+            const promise = new Promise<void>((resolve) => {
+                map.once("render", () => {
+                    destinationCtx.drawImage(map.getCanvas(), 0, 0)
+                    resolve()
+                })
+            })
+
+            while (!map.isStyleLoaded()) {
+                console.log("Waiting to fully load the style...")
+                await Utils.waitFor(100)
+            }
+            map.triggerRepaint()
+            await promise
+            // Reset the canvas width and height
+            map.resize()
+        }
+        {
+            // now, we draw the markers on top of the map
+
+            /* We use html2canvas for this, but disable the map canvas object itself:
+             * it cannot deal with this canvas object.
+             *
+             * We also have to patch up a few more objects
+             * */
+            const container = map.getCanvasContainer()
+            const origHeight = container.style.height
+            const origStyle = map.getCanvas().style.display
+            try {
+                map.getCanvas().style.display = "none"
+                if (!container.style.height) {
+                    container.style.height = document.documentElement.clientHeight + "px"
+                }
+
+                const markerCanvas: HTMLCanvasElement = await html2canvas(
+                    map.getCanvasContainer(),
+                    {
+                        backgroundColor: "#00000000",
+                        canvas: drawOn,
+                    }
+                )
+                const markers = await new Promise<Blob>((resolve) =>
+                    markerCanvas.toBlob((data) => resolve(data))
+                )
+                console.log("Markers:", markers, markerCanvas)
+                // destinationCtx.drawImage(markerCanvas, 0, 0)
+            } catch (e) {
+                console.error(e)
+            } finally {
+                map.getCanvas().style.display = origStyle
+                container.style.height = origHeight
+            }
+        }
+
+        // At last, we return the actual blob
+        return new Promise<Blob>((resolve) => drawOn.toBlob((data) => resolve(data)))
+    }
+
+    private updateStores() {
+        const map = this._maplibreMap.data
+        if (map === undefined) {
+            return
+        }
+        const dt = this.location.data
+        dt.lon = map.getCenter().lng
+        dt.lat = map.getCenter().lat
+        this.location.ping()
+        this.zoom.setData(Math.round(map.getZoom() * 10) / 10)
+        const bounds = map.getBounds()
+        const bbox = new BBox([
+            [bounds.getEast(), bounds.getNorth()],
+            [bounds.getWest(), bounds.getSouth()],
+        ])
+        this.bounds.setData(bbox)
+    }
+
     private SetZoom(z: number) {
         const map = this._maplibreMap.data
         if (!map || z === undefined) {

UI/SpecialVisualization.ts

@@ -4,7 +4,7 @@ import LayoutConfig from "../Models/ThemeConfig/LayoutConfig"
 import { IndexedFeatureSource, WritableFeatureSource } from "../Logic/FeatureSource/FeatureSource"
 import { OsmConnection } from "../Logic/Osm/OsmConnection"
 import { Changes } from "../Logic/Osm/Changes"
-import { MapProperties } from "../Models/MapProperties"
+import { ExportableMap, MapProperties } from "../Models/MapProperties"
 import LayerState from "../Logic/State/LayerState"
 import { Feature, Geometry } from "geojson"
 import FullNodeDatabaseSource from "../Logic/FeatureSource/TiledFeatureSource/FullNodeDatabaseSource"
@@ -42,7 +42,7 @@ export interface SpecialVisualizationState {
     /**
      * State of the main map
      */
-    readonly mapProperties: MapProperties
+    readonly mapProperties: MapProperties & ExportableMap
 
     readonly selectedElement: UIEventSource<Feature>
     /**

Utils.ts

@@ -1045,6 +1045,7 @@ In the case that MapComplete is pointed to the testing grounds, the edit will be
                 | "application/vnd.geo+json"
                 | "{gpx=application/gpx+xml}"
                 | "application/json"
+                | "image/png"
         }
     ) {
         const element = document.createElement("a")

assets/tagRenderings/questions.json

@@ -2058,4 +2058,4 @@
       }
     ]
   }
-}
+}

langs/en.json

@@ -159,8 +159,10 @@
         "download": {
             "downloadAsPdf": "Download a PDF of the current map",
             "downloadAsPdfHelper": "Ideal to print the current map",
+            "downloadAsPng": "Download as image",
+            "downloadAsPngHelper": "Ideal to include in reports",
             "downloadAsSvg": "Download an SVG of the current map",
-            "downloadAsSvgHelper": "Compatible Inkscape or Adobe Illustrator; will need further processing  ",
+            "downloadAsSvgHelper": "Compatible Inkscape or Adobe Illustrator; will need further processing",
             "downloadCSV": "Download visible data as CSV",
             "downloadCSVHelper": "Compatible with LibreOffice Calc, Excel, …",
             "downloadFeatureAsGeojson": "Download as GeoJSON-file",

package-lock.json

@@ -19,6 +19,7 @@
         "@turf/distance": "^6.5.0",
         "@turf/length": "^6.5.0",
         "@turf/turf": "^6.5.0",
+        "@types/html2canvas": "^1.0.0",
         "@types/showdown": "^2.0.0",
         "chart.js": "^3.8.0",
         "country-language": "^0.1.7",
@@ -29,6 +30,7 @@
         "fake-dom": "^1.0.4",
         "geojson2svg": "^1.3.3",
         "html-to-markdown": "^1.0.0",
+        "html2canvas": "^1.4.1",
         "i18next-client": "^1.11.4",
         "idb-keyval": "^6.0.3",
         "jest-mock": "^29.4.1",
@@ -3644,6 +3646,15 @@
       "resolved": "https://registry.npmjs.org/@types/geojson/-/geojson-7946.0.10.tgz",
       "integrity": "sha512-Nmh0K3iWQJzniTuPRcJn5hxXkfB1T1pgB89SBig5PlJQU5yocazeu4jATJlaA0GYFKWMqDdvYemoSnF2pXgLVA=="
     },
+    "node_modules/@types/html2canvas": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/@types/html2canvas/-/html2canvas-1.0.0.tgz",
+      "integrity": "sha512-BJpVf+FIN9UERmzhbtUgpXj6XBZpG67FMgBLLoj9HZKd9XifcCpSV+UnFcwTZfEyun4U/KmCrrVOG7829L589w==",
+      "deprecated": "This is a stub types definition. html2canvas provides its own type definitions, so you do not need this installed.",
+      "dependencies": {
+        "html2canvas": "*"
+      }
+    },
     "node_modules/@types/istanbul-lib-coverage": {
       "version": "2.0.4",
       "resolved": "https://registry.npmjs.org/@types/istanbul-lib-coverage/-/istanbul-lib-coverage-2.0.4.tgz",
@@ -4223,7 +4234,6 @@
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-      "optional": true,
       "engines": {
         "node": ">= 0.6.0"
       }
@@ -4876,7 +4886,6 @@
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/css-line-break/-/css-line-break-2.1.0.tgz",
       "integrity": "sha512-FHcKFCZcAha3LwfVBhCQbW2nCNbkZXn7KVUJcsT5/P8YmfsVja0FMPJr0B903j/E69HUphKiV9iQArX8SDYA4w==",
-      "optional": true,
       "dependencies": {
         "utrie": "^1.0.2"
       }
@@ -6480,7 +6489,6 @@
       "version": "1.4.1",
       "resolved": "https://registry.npmjs.org/html2canvas/-/html2canvas-1.4.1.tgz",
       "integrity": "sha512-fPU6BHNpsyIhr8yyMpTLLxAbkaK8ArIBcmZIRiBLiDhjeqvXolaEmDGmELFuX9I4xDcaKKcJl+TKZLqruBbmWA==",
-      "optional": true,
       "dependencies": {
         "css-line-break": "^2.1.0",
         "text-segmentation": "^1.0.3"
@@ -10167,7 +10175,6 @@
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/text-segmentation/-/text-segmentation-1.0.3.tgz",
       "integrity": "sha512-iOiPUo/BGnZ6+54OsWxZidGCsdU8YbE4PSpdPinp7DeMtUJNJBoJ/ouUSTJjHkh1KntHaltHl/gDs2FC4i5+Nw==",
-      "optional": true,
       "dependencies": {
         "utrie": "^1.0.2"
       }
@@ -11527,7 +11534,6 @@
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/utrie/-/utrie-1.0.2.tgz",
       "integrity": "sha512-1MLa5ouZiOmQzUbjbu9VmjLzn1QLXBhwpUa7kdLUQK+KQ5KA9I1vk5U4YHe/X2Ch7PYnJfWuWT+VbuxbGwljhw==",
-      "optional": true,
       "dependencies": {
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       }
@@ -14804,6 +14810,14 @@
       "resolved": "https://registry.npmjs.org/@types/geojson/-/geojson-7946.0.10.tgz",
       "integrity": "sha512-Nmh0K3iWQJzniTuPRcJn5hxXkfB1T1pgB89SBig5PlJQU5yocazeu4jATJlaA0GYFKWMqDdvYemoSnF2pXgLVA=="
     },
+    "@types/html2canvas": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/@types/html2canvas/-/html2canvas-1.0.0.tgz",
+      "integrity": "sha512-BJpVf+FIN9UERmzhbtUgpXj6XBZpG67FMgBLLoj9HZKd9XifcCpSV+UnFcwTZfEyun4U/KmCrrVOG7829L589w==",
+      "requires": {
+        "html2canvas": "*"
+      }
+    },
     "@types/istanbul-lib-coverage": {
       "version": "2.0.4",
       "resolved": "https://registry.npmjs.org/@types/istanbul-lib-coverage/-/istanbul-lib-coverage-2.0.4.tgz",
@@ -15288,8 +15302,7 @@
     "base64-arraybuffer": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/base64-arraybuffer/-/base64-arraybuffer-1.0.2.tgz",
-      "integrity": "sha512-I3yl4r9QB5ZRY3XuJVEPfc2XhZO6YweFPI+UovAzn+8/hb3oJ6lnysaFcjVpkCPfVWFUDvoZ8kmVDP7WyRtYtQ==",
+      "integrity": "sha512-I3yl4r9QB5ZRY3XuJVEPfc2XhZO6YweFPI+UovAzn+8/hb3oJ6lnysaFcjVpkCPfVWFUDvoZ8kmVDP7WyRtYtQ=="
-      "optional": true
     },
     "base64-js": {
       "version": "1.5.1",
@@ -15763,7 +15776,6 @@
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/css-line-break/-/css-line-break-2.1.0.tgz",
       "integrity": "sha512-FHcKFCZcAha3LwfVBhCQbW2nCNbkZXn7KVUJcsT5/P8YmfsVja0FMPJr0B903j/E69HUphKiV9iQArX8SDYA4w==",
-      "optional": true,
       "requires": {
         "utrie": "^1.0.2"
       }
@@ -16991,7 +17003,6 @@
       "version": "1.4.1",
       "resolved": "https://registry.npmjs.org/html2canvas/-/html2canvas-1.4.1.tgz",
       "integrity": "sha512-fPU6BHNpsyIhr8yyMpTLLxAbkaK8ArIBcmZIRiBLiDhjeqvXolaEmDGmELFuX9I4xDcaKKcJl+TKZLqruBbmWA==",
-      "optional": true,
       "requires": {
         "css-line-break": "^2.1.0",
         "text-segmentation": "^1.0.3"
@@ -19717,7 +19728,6 @@
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/text-segmentation/-/text-segmentation-1.0.3.tgz",
       "integrity": "sha512-iOiPUo/BGnZ6+54OsWxZidGCsdU8YbE4PSpdPinp7DeMtUJNJBoJ/ouUSTJjHkh1KntHaltHl/gDs2FC4i5+Nw==",
-      "optional": true,
       "requires": {
         "utrie": "^1.0.2"
       }
@@ -20828,7 +20838,6 @@
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/utrie/-/utrie-1.0.2.tgz",
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-      "optional": true,
       "requires": {
         "base64-arraybuffer": "^1.0.2"
       }

package.json

@@ -71,6 +71,7 @@
     "@turf/distance": "^6.5.0",
     "@turf/length": "^6.5.0",
     "@turf/turf": "^6.5.0",
+    "@types/html2canvas": "^1.0.0",
     "@types/showdown": "^2.0.0",
     "chart.js": "^3.8.0",
     "country-language": "^0.1.7",
@@ -81,6 +82,7 @@
     "fake-dom": "^1.0.4",
     "geojson2svg": "^1.3.3",
     "html-to-markdown": "^1.0.0",
+    "html2canvas": "^1.4.1",
     "i18next-client": "^1.11.4",
     "idb-keyval": "^6.0.3",
     "jest-mock": "^29.4.1",