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Signed-off-by: Henry Gressmann <mail@henrygressmann.de>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,169 @@ | ||
| import styles from "./map.module.css"; | ||
|
|
||
| import { RotateCcwIcon } from "lucide-react"; | ||
| import { useEffect, useMemo, useRef, useState } from "react"; | ||
| import { Tooltip } from "react-tooltip"; | ||
|
|
||
| import { type GeoProjection, geoMercator, geoPath } from "d3-geo"; | ||
| import { select } from "d3-selection"; | ||
| import { type ZoomBehavior, zoom as d3Zoom, zoomIdentity } from "d3-zoom"; | ||
|
|
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| import type { Feature, Geometry } from "geojson"; | ||
| import * as topo from "topojson-client"; | ||
| import type { GeometryCollection, Topology } from "topojson-specification"; | ||
|
|
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| import geo from "../../../../data/geo.json"; | ||
| import { type DimensionTableRow, type Metric, metricNames } from "../../api"; | ||
| import { cls, formatMetricVal } from "../../utils"; | ||
|
|
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| const features = topo.feature(geo as unknown as Topology, geo.objects.geo as GeometryCollection).features as Feature< | ||
| Geometry, | ||
| { | ||
| name: string; | ||
| iso: string; | ||
| } | ||
| >[]; | ||
|
|
||
| type Location = { | ||
| name: string; | ||
| iso: string; | ||
| }; | ||
|
|
||
| export const Worldmap = ({ | ||
| metric, | ||
| data, | ||
| }: { | ||
| metric: Metric; | ||
| data?: DimensionTableRow[]; | ||
| }) => { | ||
| const svgRef = useRef<SVGSVGElement | null>(null); | ||
| const containerRef = useRef<HTMLDivElement | null>(null); | ||
| const [dimensions, setDimensions] = useState({ width: 800, height: 400 }); | ||
| const [moved, setMoved] = useState(false); | ||
|
|
||
| const [currentLocation, setCurrentLocation] = useState<Location | null>(null); | ||
| const biggest = useMemo(() => data?.reduce((a, b) => (a.value > b.value ? a : b), data[0]), [data]); | ||
| const countries = useMemo(() => { | ||
| const countries = new Map<string, number>(); | ||
| for (const row of data ?? []) { | ||
| countries.set(row.dimensionValue, row.value); | ||
| } | ||
| return countries; | ||
| }, [data]); | ||
|
|
||
| const projection = useRef<GeoProjection>(); | ||
| if (!projection.current) { | ||
| projection.current = geoMercator() | ||
| .scale((dimensions.width / dimensions.width) * 125) | ||
| // .scale((dimensions.width / 800) * 170) | ||
| // .translate([dimensions.width / 2, dimensions.height / 2]) | ||
| .center([45, 45]); | ||
| } | ||
| const pathGenerator = geoPath(projection.current); | ||
|
|
||
| const zoomBehavior = useRef<ZoomBehavior<SVGSVGElement, unknown>>(); | ||
| if (!zoomBehavior.current) { | ||
| zoomBehavior.current = d3Zoom<SVGSVGElement, unknown>() | ||
| .scaleExtent([1, 8]) // Min and max zoom levels | ||
| .on("zoom", (event) => { | ||
| select(svgRef.current).select("g").attr("transform", event.transform); | ||
| setMoved(true); | ||
| }); | ||
| } | ||
|
|
||
| useEffect(() => { | ||
| if (!svgRef.current || !zoomBehavior.current) return; | ||
|
|
||
| // Setup zoom behavior | ||
| select(svgRef.current).call(zoomBehavior.current); | ||
|
|
||
| const resizeObserver = new ResizeObserver((entries) => { | ||
| if (entries[0].contentRect) { | ||
| const { width, height } = entries[0].contentRect; | ||
| setDimensions({ width, height }); | ||
| } | ||
| }); | ||
|
|
||
| if (containerRef.current) { | ||
| resizeObserver.observe(containerRef.current); | ||
| } | ||
|
|
||
| return () => { | ||
| if (containerRef.current) { | ||
| resizeObserver.unobserve(containerRef.current); | ||
| } | ||
| }; | ||
| }, []); | ||
|
|
||
| return ( | ||
| <div ref={containerRef} className={styles.worldmap} data-tooltip-float={true} data-tooltip-id="map"> | ||
| <button | ||
| type="button" | ||
| className={cls(styles.reset, moved && styles.moved)} | ||
| onClick={() => { | ||
| setCurrentLocation(null); | ||
|
|
||
| if (zoomBehavior.current && svgRef.current) { | ||
| select(svgRef.current).call(zoomBehavior.current.transform, zoomIdentity); | ||
| setMoved(false); | ||
| } | ||
| }} | ||
| > | ||
| <RotateCcwIcon size={18} /> | ||
| </button> | ||
|
|
||
| <svg ref={svgRef} style={{ display: "block" }} viewBox={"0 0 800 500"}> | ||
| <title>WoldMap</title> | ||
| <g> | ||
| {features.map((feature, index) => ( | ||
| <Landmass | ||
| key={index} | ||
| feature={feature} | ||
| pathGenerator={pathGenerator} | ||
| countries={countries} | ||
| biggest={biggest} | ||
| onSetLocation={setCurrentLocation} | ||
| /> | ||
| ))} | ||
| </g> | ||
| </svg> | ||
| <Tooltip id="map" className={styles.tooltipContainer} classNameArrow={styles.reset} disableStyleInjection> | ||
| {currentLocation && ( | ||
| <div className={styles.tooltip} data-theme="dark"> | ||
| <h2>{metricNames[metric]}</h2> | ||
| <h3> | ||
| {currentLocation.name} <span>{formatMetricVal(countries.get(currentLocation.iso) ?? 0, metric)}</span> | ||
| </h3> | ||
| </div> | ||
| )} | ||
| </Tooltip> | ||
| </div> | ||
| ); | ||
| }; | ||
|
|
||
| const Landmass = ({ | ||
| feature, | ||
| pathGenerator, | ||
| countries, | ||
| biggest, | ||
| onSetLocation, | ||
| }: { | ||
| feature: Feature<Geometry, { name: string; iso: string }>; | ||
| pathGenerator: ReturnType<typeof geoPath>; | ||
| countries: Map<string, number>; | ||
| biggest?: DimensionTableRow; | ||
| onSetLocation: (location: Location | null) => void; | ||
| }) => { | ||
| const path = useMemo(() => pathGenerator(feature), [pathGenerator, feature]); | ||
| const percent = (countries.get(feature.properties.iso) ?? 0) / (biggest?.value ?? 100); | ||
|
|
||
| return ( | ||
| <path | ||
| d={path || ""} | ||
| className={styles.geo} | ||
| style={{ "--percent": percent } as React.CSSProperties} | ||
| onMouseEnter={() => onSetLocation({ name: feature.properties.name, iso: feature.properties.iso })} | ||
| onMouseLeave={() => onSetLocation(null)} | ||
| /> | ||
| ); | ||
| }; |
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