107 lines
3.7 KiB
JavaScript
107 lines
3.7 KiB
JavaScript
import React, { Component, Fragment } from 'react';
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import { Map, TileLayer, ZoomControl, AttributionControl } from 'react-leaflet-universal';
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import '../../node_modules/leaflet/dist/leaflet.css'
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import './map.css'
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import ThemeSwitcher from './theme-switcher';
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const OS_API_KEY = 'NVUxtY5r8eA6eIfwrPTAGKrAAsoeI9E9';
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/**
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* Map area
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*/
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class ColouringMap extends Component {
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constructor(props) {
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super(props);
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this.state = {
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theme: 'light',
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lat: 51.5245255,
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lng: -0.1338422,
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zoom: 16
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};
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this.handleClick = this.handleClick.bind(this);
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this.themeSwitch = this.themeSwitch.bind(this);
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}
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handleClick(e) {
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var lat = e.latlng.lat
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var lng = e.latlng.lng
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fetch(
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'/buildings.json?lat='+lat+'&lng='+lng
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).then(
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(res) => res.json()
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).then(function(data){
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if (data.geometry_id && data.id){
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this.props.history.push(`/building/${data.id}.html`);
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this.props.selectBuilding(data);
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} else {
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// this.props.selectBuilding(undefined); // TODO follow through back to maps
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}
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}.bind(this)).catch(
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(err) => console.error(err)
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)
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}
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themeSwitch(e) {
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e.preventDefault();
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const newTheme = (this.state.theme === 'light')? 'night' : 'light';
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this.setState({theme: newTheme});
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}
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render() {
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const position = [this.state.lat, this.state.lng];
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// baselayer
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const key = OS_API_KEY
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const tilematrixSet = 'EPSG:3857'
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const layer = (this.state.theme === 'light')? 'Light 3857' : 'Night 3857';
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const url = `https://api2.ordnancesurvey.co.uk/mapping_api/v1/service/zxy/${tilematrixSet}/${layer}/{z}/{x}/{y}.png?key=${key}`
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const attribution = 'Building attribute data is © Colouring London contributors. Maps contain OS data © Crown copyright: OS Maps baselayers and building outlines.'
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// colour-data tiles
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var data_tileset, is_building;
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if (this.props.match && this.props.match.params && this.props.match.params[1]) {
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data_tileset = this.props.match.params[1].replace("/", "")
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is_building = this.props.match.params[0] === 'building'
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} else {
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is_building = false;
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data_tileset = 'date_year';
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}
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const dataLayer = !is_building ? (
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<TileLayer key={data_tileset} url={`/tiles/${data_tileset}/{z}/{x}/{y}.png`} />
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) : null;
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// highlight
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const geometry_id = (this.props.building) ? this.props.building.geometry_id : undefined;
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const highlight = `/tiles/highlight/{z}/{x}/{y}.png?highlight=${geometry_id}`
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const highlightLayer = is_building ? (
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<TileLayer key={this.props.building.id} url={highlight} />
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) : null;
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return (
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<Fragment>
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<Map
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center={position}
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zoom={this.state.zoom}
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minZoom={10}
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maxZoom={18}
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doubleClickZoom={false}
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zoomControl={false}
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attributionControl={false}
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onClick={this.handleClick}
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>
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<TileLayer url={url} attribution={attribution} />
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{ dataLayer }
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{ highlightLayer }
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<ZoomControl position="topright" />
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<AttributionControl prefix="" />
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</Map>
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<ThemeSwitcher onSubmit={this.themeSwitch} currentTheme={this.state.theme} />
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</Fragment>
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);
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}
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};
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export default ColouringMap;
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