I am creating a donut chart using Chartist but unable to add a custom tooltip with resize slice on the mouse hover event. Chartist "Draw" method is rerender on changing the position of mouse on hover of the chart I pasted my code as below:
/* eslint-disable no-unused-vars */
import React, {useState} from 'react'
import PropTypes from 'prop-types'
import ChartistGraph from 'react-chartist'
import Chartist from 'chartist'
import styles from './MyChart.scss'
import {formatNumber} from '../../../../utils/formatter'
import MyChartInfo from './MyChartInfo'
function MyChart ({ dataSeries, getDetailsTable }) {
const [changePercent, setChangePercent] = useState(0)
const [showToolTip, setShowToolTip] = useState(false)
const [myChartInfoDetails, setMyChartInfoDetails] = useState({sectorName: '', changePercent: ''})
const [toolTipPosition, setToolTipPosition] = useState({})
function setToolTip () {
const PopOverData = [myChartInfoDetails.sectorName || '', `% Return: ${myChartInfoDetails.changePercent || ''}`, '(Click to view top & worst performing equities)']
return (<MyChartInfo dataTable={PopOverData} style={toolTipPosition} />)
}
let pieOptions = {
width: '520px',
height: '520px',
donut: true,
donutWidth: 150,
donutSolid: false,
startAngle: 270,
showLabel: true,
chartPadding: 60,
labelOffset: 105,
labelDirection: 'explode',
labelInterpolationFnc: function (value) {
return value
}
}
let pieData = {
series: dataSeries && dataSeries.length > 0 ? dataSeries.map(item => Math.abs(item.value)) : [100],
labels: dataSeries && dataSeries.length > 0 ? dataSeries.map(item => item.name.concat('<br>', formatNumber(item.value, {precision: 2, negSign: true, posSign: true}))) : ['']
}
// eslint-disable-next-line no-unused-vars
const listner = {
created: (chart) => {
const chartPie = document.querySelectorAll('.ct-chart-donut .ct-slice-donut')
chartPie && chartPie.forEach((pie) => {
pie.addEventListener('mouseenter', (e) => {
e.stopPropagation()
pie.setAttribute('style', 'stroke-width: 170px;')
console.log('hover aa ', changePercent, Math.abs(pie.getAttribute('ct:value')))
setChangePercent(Math.abs(pie.getAttribute('ct:value')))
let topPosition = e.layerY + 30
let leftPosition = e.layerX + 30
setToolTipPosition({top: topPosition, left: leftPosition})
const myChartData = dataSeries.find(sector => Math.abs(sector.value) === Math.abs(pie.getAttribute('ct:value')))
setSectorDetails({sectorName: myChartData.name, changePercent: myChartData.value})
setShowToolTip(true)
})
pie.addEventListener('mouseleave', (e) => {
pie.setAttribute('style', 'stroke-width: 150px;')
setShowToolTip(false)
})
pie.addEventListener('click', (e) => {
const Id = dataSeries.find(sector => Math.abs(sector.value) === Math.abs(pie.getAttribute('ct:value'))).id.toString()
console.log('click ', Id, pie.getAttribute('ct:value'))
getDetailsTable(Id)
})
})
},
draw: (data) => {
// console.log('data', data)
if (data.type === 'slice') {
// Get the total path length in order to use for dash array animation
var pathLength = data.element._node.getTotalLength()
// Set a dasharray that matches the path length as prerequisite to animate dashoffset
data.element.attr({
'stroke-dasharray': pathLength + 'px ' + pathLength + 'px'
})
let noOfNonZeros = dataSeries.length > 0 && dataSeries.filter(e => e.value > 0).length
// Create animation definition while also assigning an ID to the animation for later sync usage
var animationDefinition = {
'stroke-dashoffset': {
id: 'anim' + data.index,
dur: 1,
from: -pathLength + 'px',
to: noOfNonZeros > 1 ? '2px' : '0px',
easing: Chartist.Svg.Easing.easeOutQuint,
// We need to use `fill: 'freeze'` otherwise our animation will fall back to initial (not visible)
fill: 'freeze'
}
}
// If this was not the first slice, we need to time the animation so that it uses the end sync event of the previous animation
if (data.index !== 0) {
animationDefinition['stroke-dashoffset'].begin = 'anim' + (data.index - 1) + '.end'
}
// We need to set an initial value before the animation starts as we are not in guided mode which would do that for us
data.element.attr({
'stroke-dashoffset': -pathLength + 'px'
})
// We can't use guided mode as the animations need to rely on setting begin manually
// See http://gionkunz.github.io/chartist-js/api-documentation.html#chartistsvg-function-animate
data.element.animate(animationDefinition, false)
if (dataSeries.length === 0) {
data.element._node.setAttribute('data-value', 'no-composition')
}
}
if (data.type === 'label') {
let textHtml = ['<p>', data.text, '</p>'].join('')
let multilineText = Chartist.Svg('svg').foreignObject(
textHtml,
{
style: 'overflow: visible;',
x: data.x - 30,
y: data.y - 30,
width: 90,
height: 30
},
'ct-label'
)
data.element.replace(multilineText)
}
}
}
return (
<div data-testid='gPieChart' id='performance_chart'>
{<ChartistGraph
data={pieData}
options={pieOptions}
type='Pie'
style={{ width: '100%', height: '100%' }}
className={styles.MyChart}
listener={listner}
/>
}
{showToolTip && setToolTip()}
</div>
)
}
MyChart.propTypes = {
dataSeries: PropTypes.array,
getDetailsTable: PropTypes.func
}
export default MyChart
I want to add a custom tooltip with resize slice functionality on mouse hover event