mirror of
https://github.com/bellingcat/ukraine-timemap.git
synced 2026-06-11 21:08:36 +03:00
Make events on map into a react component
This commit is contained in:
Franc Camps-Febrer
@@ -6,6 +6,7 @@ import * as selectors from '../selectors'
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import MapLogic from '../js/map/map.js'
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import MapSites from './MapSites.jsx';
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import MapEvents from './MapEvents.jsx';
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import MapNarratives from './MapNarratives.jsx';
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class Map extends React.Component {
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@@ -49,15 +50,15 @@ class Map extends React.Component {
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});
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this.mapLogic = new MapLogic(this.state.map, this.svg, this.g, this.props.app, this.props.ui, this.props.methods)
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this.mapLogic.update(this.props.domain, this.props.app)
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this.mapLogic.update(this.props.app)
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this.setState({ isInitialized: true })
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}
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}
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componentWillReceiveProps(nextProps) {
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if (hash(nextProps) !== hash(this.props)) {
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this.mapLogic.update(nextProps.domain, nextProps.app)
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if (hash(nextProps.app) !== hash(this.props.app)) {
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this.mapLogic.update(nextProps.app)
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}
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}
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@@ -121,10 +122,10 @@ class Map extends React.Component {
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}
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updateSVG() {
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const boundingClient = d3.select(`#${this.props.mapId}`).node().getBoundingClientRect();
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//const boundingClient = d3.select(`#${this.props.mapId}`).node().getBoundingClientRect();
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let WIDTH = boundingClient.width;
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let HEIGHT = boundingClient.height;
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//let WIDTH = boundingClient.width;
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//let HEIGHT = boundingClient.height;
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// Offset with leaflet map transform boundaries
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const { transformX, transformY } = this.getSVGBoundaries();
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@@ -136,12 +137,7 @@ class Map extends React.Component {
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/*this.svg.attr('width', WIDTH)
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.attr('height', HEIGHT)
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.attr('style', `left: ${-transformX}px; top: ${-transformY}px`);
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this.g.selectAll('.location').attr('transform', (d) => {
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const newPoint = projectPoint([+d.latitude, +d.longitude]);
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return `translate(${newPoint.x},${newPoint.y})`;
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});*/
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.attr('style', `left: ${-transformX}px; top: ${-transformY}px`);*/
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}
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renderSites() {
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@@ -178,12 +174,32 @@ class Map extends React.Component {
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return '';
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}
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renderEvents() {
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if (this.state.isInitialized) {
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return (
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<MapEvents
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svg={this.svg}
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locations={this.props.domain.locations}
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categories={this.props.domain.categories}
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map={this.state.map}
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mapTransformX={this.state.mapTransformX}
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mapTransformY={this.state.mapTransformY}
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onSelect={this.props.methods.onSelect}
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onSelectNarrative={this.props.methods.onSelectNarrative}
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/>
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);
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}
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return '';
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}
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render() {
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const classes = this.props.app.narrative ? 'map-wrapper narrative-mode' : 'map-wrapper';
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return (
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<div className={classes}>
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<div id={this.props.mapId} />
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{this.renderSites()}
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{this.renderEvents()}
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{this.renderNarratives()}
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</div>
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);
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76
src/components/MapEvents.jsx
Normal file
76
src/components/MapEvents.jsx
Normal file
@@ -0,0 +1,76 @@
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import React from 'react';
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import { Portal } from 'react-portal';
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class MapEvents extends React.Component {
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projectPoint(location) {
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const latLng = new L.LatLng(location[0], location[1]);
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return {
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x: this.props.map.latLngToLayerPoint(latLng).x + this.props.mapTransformX,
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y: this.props.map.latLngToLayerPoint(latLng).y + this.props.mapTransformY
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};
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}
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getLocationEventsDistribution(location) {
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const eventCount = {};
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const categories = this.props.categories;
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categories.forEach(cat => {
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eventCount[cat.category] = 0
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});
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location.events.forEach((event) => {;
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eventCount[event.category] += 1;
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});
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let i = 0;
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const events = [];
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while (i < categories.length) {
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let _eventsCount = eventCount[categories[i].category];
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for (let j = i + 1; j < categories.length; j++) {
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_eventsCount += eventCount[categories[j].category];
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}
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events.push(_eventsCount);
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i++;
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}
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return events;
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}
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renderCategory(counts, events) {
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return (
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<circle
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className="location-event-marker"
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r={(counts) ? Math.sqrt(16 * counts) + 3 : 0}
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style={{ fill: this.props.getCategoryColor(events), fillOpacity: 0.2 }}
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onClick={() => this.props.onSelect(events)}
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>
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</circle>
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);
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}
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renderLocation(location) {
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const { x, y } = this.projectPoint([location.latitude, location.longitude]);
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const eventsCounts = this.getLocationEventsDistribution(location);
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return (
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<g
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className="location"
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transform={`translate(${x}, ${y})`}
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>
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{eventsCounts.map(eventsCount => this.renderCategory(eventsCount, location.events))}
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</g>
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)
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}
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render() {
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return (
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<Portal node={this.props.svg.node()}>
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{this.props.locations.map(loc => this.renderLocation(loc))}
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</Portal>
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);
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}
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}
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export default MapEvents;
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@@ -7,31 +7,14 @@ import 'leaflet-polylinedecorator';
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export default function(lMap, svg, g, newApp, ui, methods) {
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const domain = {
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locations: [],
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narratives: [],
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categories: [],
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}
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const app = {
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selected: [],
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highlighted: null,
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narrative: null,
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views: Object.assign({}, newApp.views),
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}
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const getCategoryColor = methods.getCategoryColor;
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// Icons for markPoint flags (a yellow ring around a location)
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const eventCircleMarkers = {};
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function projectPoint(location) {
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const latLng = new L.LatLng(location[0], location[1]);
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return {
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x: lMap.latLngToLayerPoint(latLng).x + getSVGBoundaries().transformX,
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y: lMap.latLngToLayerPoint(latLng).y + getSVGBoundaries().transformY
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};
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}
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function getSVGBoundaries() {
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const mapNode = d3.select('.leaflet-map-pane').node();
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if (mapNode === null) return { transformX: 0, transformY: 0 };
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@@ -62,25 +45,10 @@ export default function(lMap, svg, g, newApp, ui, methods) {
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svg.attr('width', WIDTH)
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.attr('height', HEIGHT)
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.attr('style', `left: ${-transformX}px; top: ${-transformY}px`);
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g.selectAll('.location').attr('transform', (d) => {
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const newPoint = projectPoint([+d.latitude, +d.longitude]);
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return `translate(${newPoint.x},${newPoint.y})`;
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});
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}
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lMap.on("zoomend viewreset moveend", updateSVG);
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/**
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* Returns latitud / longitude
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* @param {Object} eventPoint: data for an evenPoint - time, loc, tags, etc
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*/
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function getEventLocation(eventPoint) {
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return {
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latitude: +eventPoint.location.latitude,
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longitude: +eventPoint.location.longitude,
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};
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}
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/*
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* INTERACTIVE FUNCTIONS
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@@ -130,136 +98,22 @@ export default function(lMap, svg, g, newApp, ui, methods) {
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}
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}
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}
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/*
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* RENDERING FUNCTIONS
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*/
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function getLocationEventsDistribution(location) {
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const eventCount = {};
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const categories = domain.categories;
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categories.forEach(cat => {
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eventCount[cat.category] = 0
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});
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location.events.forEach((event) => {;
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eventCount[event.category] += 1;
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});
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let i = 0;
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const events = [];
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while (i < categories.length) {
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let _eventsCount = eventCount[categories[i].category];
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for (let j = i + 1; j < categories.length; j++) {
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_eventsCount += eventCount[categories[j].category];
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}
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events.push(_eventsCount);
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i++;
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}
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return events;
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}
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/**
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* Clears existing event layer
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* Renders all events as markers
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* Adds eventlayer to map
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*/
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function renderEvents() {
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const locationsDom = g.selectAll('.location')
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.data(domain.locations, d => d.id)
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locationsDom
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.exit()
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.remove();
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locationsDom
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.enter().append('g')
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.attr('class', 'location')
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.attr('transform', (d) => {
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const newPoint = projectPoint([+d.latitude, +d.longitude]);
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return `translate(${newPoint.x},${newPoint.y})`;
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})
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.on('click', (location) => {
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methods.onSelect(location.events);
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});
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const eventsDom = g.selectAll('.location')
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.selectAll('.location-event-marker')
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.data((d, i) => getLocationEventsDistribution(domain.locations[i]))
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eventsDom
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.exit()
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.attr('r', 0)
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.remove();
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eventsDom
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.transition()
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.duration(500)
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.attr('r', d => (d) ? Math.sqrt(16 * d) + 3 : 0);
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eventsDom
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.enter().append('circle')
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.attr('class', 'location-event-marker')
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.style('fill', (d, i) => getCategoryColor(domain.categories[i].category))
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.transition()
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.duration(500)
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.attr('r', d => (d) ? Math.sqrt(16 * d) + 3 : 0);
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eventsDom.selectAll('.location-event-marker')
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.style('fill-opacity', '0.1 !important');
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}
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const getCoords = (d) => {
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d.LatLng = new L.LatLng(+d.latitude, +d.longitude);
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return {
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x: lMap.latLngToLayerPoint(d.LatLng).x,
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y: lMap.latLngToLayerPoint(d.LatLng).y
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}
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}
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function getMarker (d) {
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if (!d || app.narrative === null) return 'none';
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if (d.id === app.narrative.id) return 'url(#arrow)';
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return 'url(#arrow-off)';
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}
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/**
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* Updates displayable data on the map: events, coevents and paths
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* @param {Object} domain: object of arrays of events, coevs, attacks, paths, sites
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*/
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function update(newDomain, newApp) {
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function update(newApp) {
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updateSVG();
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const isNewDomain = (hash(domain) !== hash(newDomain));
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const isNewAppProps = (hash(app) !== hash(newApp));
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if (isNewDomain) {
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domain.locations = newDomain.locations;
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domain.categories = newDomain.categories;
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}
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if (isNewAppProps) {
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app.views = newApp.views;
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app.selected = newApp.selected;
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app.highlighted = newApp.highlighted;
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app.mapAnchor = newApp.mapAnchor;
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app.narrative = newApp.narrative;
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}
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if (isNewDomain || isNewAppProps) renderDomain();
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if (isNewAppProps) renderSelectedAndHighlight();
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}
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/**
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* Renders events on the map: takes data, and enters, updates and exits
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*/
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function renderDomain () {
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renderEvents();
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}
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function renderSelectedAndHighlight () {
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renderSelected();
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renderHighlighted();
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