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Enable rendering negative area chart with lines of any color #5002

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Enable rendering negative area chart with lines of any color #5002

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0539ab0
Added enabledOnSeries prop to plotOptions.line to allow rendering neg…
elaaksonen Mar 31, 2025
9bce87f
Updated types for enabledOnSeries for line plotOptions
elaaksonen Mar 31, 2025
58f7f9a
Fixed typo on comment
elaaksonen Mar 31, 2025
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151 changes: 151 additions & 0 deletions samples/react/area/area-with-negative-and-lines.html
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Original file line number Diff line number Diff line change
@@ -0,0 +1,151 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta http-equiv="X-UA-Compatible" content="ie=edge" />
<title>Area with different negative color</title>

<link href="../../assets/styles.css" rel="stylesheet" />

<style>
#chart {
max-width: 650px;
margin: 35px auto;
}
</style>

<script>
window.Promise ||
document.write(
'<script src="https://cdn.jsdelivr.net/npm/promise-polyfill@8/dist/polyfill.min.js"><\/script>'
)
window.Promise ||
document.write(
'<script src="https://cdn.jsdelivr.net/npm/[email protected]/classList.min.js"><\/script>'
)
window.Promise ||
document.write(
'<script src="https://cdn.jsdelivr.net/npm/findindex_polyfill_mdn"><\/script>'
)
</script>

<script src="https://cdn.jsdelivr.net/npm/[email protected]/umd/react.production.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/umd/react-dom.production.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/prop-types.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/babel-core/5.8.34/browser.min.js"></script>
<script src="../../../dist/apexcharts.js"></script>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/react-apexcharts.iife.min.js"></script>

<script>
// Replace Math.random() with a pseudo-random number generator to get reproducible results in e2e tests
// Based on https://gist.github.com/blixt/f17b47c62508be59987b
var _seed = 42
Math.random = function () {
_seed = (_seed * 16807) % 2147483647
return (_seed - 1) / 2147483646
}
</script>
</head>

<body>
<div id="app"></div>

<div id="html">
&lt;div id=&quot;chart&quot;&gt; &lt;ReactApexChart
options={state.options} series={state.series} type=&quot;area&quot;
height={350} /&gt; &lt;/div&gt;
</div>

<script type="text/babel">
const ApexChart = () => {
const [state, setState] = React.useState({
series: [
{
data: [0, -41, 35, -51, 0, 62, -69, 32, -32, 54, 16, -50],
type: 'area',
color: '#ff0000',
},
{
data: [1, 10, 20, -10, -15, -20, -30, 22, 60, 30, 36, 45],
type: 'line',
color: '#0000FF',
},
{
data: [-15, -25, -40, -10, 15, 40, 59, 32, 0, -30, 36, 45],
type: 'line',
color: '#000000',
},
],
options: {
chart: {
height: 350,
type: 'area',
zoom: {
enabled: false,
},
},
dataLabels: {
enabled: false,
},
title: {
text: 'Negative color for values less than 0',
align: 'left',
},
xaxis: {
categories: [
'Jan',
'Feb',
'Mar',
'Apr',
'May',
'Jun',
'Jul',
'Aug',
'Sep',
'Oct',
'Nov',
'Dec',
],
},
stroke: {
width: [0, 2, 2],
},
fill: {
opacity: 1,
type: 'solid',
},
plotOptions: {
line: {
// Add new prop to define which series the plot option should be applied.
enabledOnSeries: [0],
colors: {
threshold: 0,
colorAboveThreshold: '#00FF00',
colorBelowThreshold: '#ff0000',
},
},
},
},
})

return (
<div>
<div id="chart">
<ReactApexChart
options={state.options}
series={state.series}
type="area"
height={350}
/>
</div>
<div id="html-dist"></div>
</div>
)
}

const domContainer = document.querySelector('#app')
ReactDOM.render(<ApexChart />, domContainer)
</script>
</body>
</html>
6 changes: 5 additions & 1 deletion src/modules/Fill.js
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Original file line number Diff line number Diff line change
Expand Up @@ -163,7 +163,11 @@ class Fill {

const drawMultiColorLine =
cnf.plotOptions.line.colors.colorAboveThreshold &&
cnf.plotOptions.line.colors.colorBelowThreshold
cnf.plotOptions.line.colors.colorBelowThreshold &&
// undefined enabledOnSeries means enabled on all series.
(!cnf.plotOptions.line.enabledOnSeries ||
(Array.isArray(cnf.plotOptions.line.enabledOnSeries) &&
cnf.plotOptions.line.enabledOnSeries.indexOf(this.seriesIndex) >= 0))

let fillColors = this.getFillColors()
let fillColor = fillColors[this.seriesIndex]
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1 change: 1 addition & 0 deletions types/apexcharts.d.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -514,6 +514,7 @@ type ApexLocale = {
*/
type ApexPlotOptions = {
line?: {
enabledOnSeries?: undefined | number[]
isSlopeChart?: boolean
colors?: {
threshold?: number,
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