asb_cloud_front/src/pages/Deposit.jsx
Фролов 98c26132d2 CF2-19 Настроить формат числовых параметров
CF2-7 В компонент DisplayValue внедрить стрелки роста/убывания значения
2021-07-26 14:44:00 +05:00

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JavaScript
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import { Map, Overlay } from "pigeon-maps"
import pointer from '../images/pointer.svg'
import {Link} from "react-router-dom";
import LoaderPortal from '../components/LoaderPortal'
import { useState, useEffect } from "react";
import {ClusterService} from '../services/api'
import notify from '../components/notify'
const calcViewParams = (clusters) => {
if (clusters || clusters.length === 0)
return {center:[60.81226, 70.0562], zoom: 5}
const center = clusters.reduce((sum, cluster) => {
sum[0] += (cluster.latitude / clusters.length)
sum[1] += (cluster.longitude / clusters.length)
return sum
}, [0, 0])
const maxDeg = clusters.reduce((max, cluster) => {
const dLatitude = Math.abs(center[0] - cluster.latitude)
const dLongitude = Math.abs(center[1] - cluster.longitude)
const d = dLatitude > dLongitude ? dLatitude : dLongitude
return d > max ? d : max
}, 0)
return {center, zoom: maxDeg*25}
}
export default function Deposit() {
const [clustersData, setClustersData] = useState([])
const [showLoader, setShowLoader] = useState(false)
useEffect(()=>{
const updateClusters = async()=>{
setShowLoader(true)
try{
const data = await ClusterService.getClusters()
setClustersData(data)
}
catch(ex) {
notify(`Не удалось загрузить список кустов`, 'error')
console.log(ex)
}
setShowLoader(false)
}
updateClusters()
}, [])
const viewParams = calcViewParams(clustersData)
const markers = clustersData.map(cluster =>
<Overlay
width={32}
anchor={[cluster.latitude, cluster.longitude]}
key={`${cluster.latitude} ${cluster.longitude}`}
>
<Link to={`/cluster/${cluster.id}`}>
<img width={40} src={pointer} alt="+"/>
<span>{cluster.caption}</span>
</Link>
</Overlay >)
return (
<LoaderPortal show={showLoader}>
<Map
height='100vh'
center={viewParams.center}
zoom={viewParams.zoom}>
{markers}
</Map>
</LoaderPortal>
);
}