Change a layer's color with buttons
This example uses setPaintProperty to change the colors of different fill layers on a map:
-
The
waterandbuildinglayers use the Mapbox Streets v8 vector tileset from the Mapbox Light style (light-v10) as avectorsource. -
The
trianglescustom layer, added withaddLayer, uses a custom tileset (examples.ckv9z0wgf5v7c27p7me2mf0l9-9wrve) as avectorsource.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Change a layer's color with buttons</title>
<meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no">
<link href="https://api.mapbox.com/mapbox-gl-js/v3.7.0/mapbox-gl.css" rel="stylesheet">
<script src="https://api.mapbox.com/mapbox-gl-js/v3.7.0/mapbox-gl.js"></script>
<style>
body { margin: 0; padding: 0; }
#map { position: absolute; top: 0; bottom: 0; width: 100%; }
</style>
</head>
<body>
<style>
.map-overlay {
font:
12px/20px 'Helvetica Neue',
Arial,
Helvetica,
sans-serif;
position: absolute;
width: 200px;
top: 0;
left: 0;
padding: 10px;
}
.map-overlay .map-overlay-inner {
background-color: #fff;
box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
border-radius: 3px;
padding: 10px;
margin-bottom: 10px;
}
.map-overlay-inner fieldset {
border: none;
padding: 0;
margin: 0 0 10px;
}
.map-overlay-inner fieldset:last-child {
margin: 0;
}
.map-overlay-inner select {
width: 100%;
}
.map-overlay-inner label {
display: block;
font-weight: bold;
margin: 0 0 5px;
}
.map-overlay-inner button {
display: inline-block;
width: 36px;
height: 20px;
border: none;
cursor: pointer;
}
.map-overlay-inner button:focus {
outline: none;
}
.map-overlay-inner button:hover {
box-shadow: inset 0 0 0 3px rgba(0, 0, 0, 0.1);
}
</style>
<div id="map"></div>
<div class="map-overlay top">
<div class="map-overlay-inner">
<fieldset>
<label>Select layer</label>
<select id="layer" name="layer">
<!-- Each value matches a layer ID. -->
<option value="water">Water</option>
<option value="building">Buildings</option>
<option value="triangles">Triangles</option>
</select>
</fieldset>
<fieldset>
<label>Choose a color</label>
<div id="swatches"></div>
</fieldset>
</div>
</div>
<script>
// TO MAKE THE MAP APPEAR YOU MUST
// ADD YOUR ACCESS TOKEN FROM
// https://account.mapbox.com
mapboxgl.accessToken = 'YOUR_MAPBOX_ACCESS_TOKEN';
const map = new mapboxgl.Map({
container: 'map',
// Choose from Mapbox's core styles, or make your own style with Mapbox Studio
style: 'mapbox://styles/mapbox/light-v11', // style URL for Mapbox Light
center: [12.338, 45.4385],
zoom: 18
});
map.on('load', () => {
// Add a custom layer that uses
// a vector tileset source.
map.addLayer({
id: 'triangles',
source: {
type: 'vector',
url: 'mapbox://examples.ckv9z0wgf5v7c27p7me2mf0l9-9wrve' // custom tileset
},
'source-layer': 'triangles',
type: 'fill'
});
});
const swatches = document.getElementById('swatches');
const layer = document.getElementById('layer');
const colors = [
'#ffffcc',
'#a1dab4',
'#41b6c4',
'#2c7fb8',
'#253494',
'#fed976',
'#feb24c',
'#fd8d3c',
'#f03b20',
'#bd0026'
];
for (const color of colors) {
const swatch = document.createElement('button');
swatch.style.backgroundColor = color;
swatch.addEventListener('click', () => {
map.setPaintProperty(layer.value, 'fill-color', color);
});
swatches.appendChild(swatch);
}
</script>
</body>
</html>
This code snippet will not work as expected until you replace
YOUR_MAPBOX_ACCESS_TOKEN with an access token from your Mapbox account.import React, { useEffect, useRef, useState } from 'react';
import mapboxgl from 'mapbox-gl';
import 'mapbox-gl/dist/mapbox-gl.css';
const MapboxExample = () => {
const mapContainerRef = useRef();
const mapRef = useRef();
const [layer, setLayer] = useState();
const colors = [
'#ffffcc',
'#a1dab4',
'#41b6c4',
'#2c7fb8',
'#253494',
'#fed976',
'#feb24c',
'#fd8d3c',
'#f03b20',
'#bd0026'
];
const handleClick = (color) => {
mapRef.current.setPaintProperty(layer, 'fill-color', color);
};
useEffect(() => {
// TO MAKE THE MAP APPEAR YOU MUST
// ADD YOUR ACCESS TOKEN FROM
// https://account.mapbox.com
mapboxgl.accessToken = 'YOUR_MAPBOX_ACCESS_TOKEN';
mapRef.current = new mapboxgl.Map({
container: mapContainerRef.current,
style: 'mapbox://styles/mapbox/light-v11',
center: [12.338, 45.4385],
zoom: 18
});
mapRef.current.on('load', () => {
mapRef.current.addLayer({
id: 'triangles',
source: {
type: 'vector',
url: 'mapbox://examples.ckv9z0wgf5v7c27p7me2mf0l9-9wrve'
},
'source-layer': 'triangles',
type: 'fill'
});
});
}, []);
const labelStyles = {
display: 'block',
fontWeight: 'bold',
margin: '0 0 5px'
};
const handleLayerChange = (e) => {
setLayer(e.target.value);
};
return (
<div style={{ height: '100%', position: 'relative' }}>
<div id="map" ref={mapContainerRef} style={{ height: '100%' }}></div>
<div
style={{
font: `12px/20px 'Helvetica Neue', Arial, Helvetica, sans-serif`,
position: 'absolute',
width: 220,
top: 0,
left: 0,
padding: '10px'
}}
>
<div
style={{
backgroundColor: '#fff',
boxShadow: '0 1px 2px rgba(0, 0, 0, 0.1)',
borderRadius: '3px',
padding: '10px',
marginBottom: '10px'
}}
>
<fieldset
style={{
border: 'none',
padding: 0,
margin: '0 0 10px'
}}
>
<label style={labelStyles}>
Select layer
<select
style={{ width: '100%' }}
id="layer"
name="layer"
onChange={handleLayerChange}
>
<option value="water">Water</option>
<option value="building">Buildings</option>
<option value="triangles">Triangles</option>
</select>
</label>
</fieldset>
<fieldset>
<label style={labelStyles}>
Choose a color
<div id="swatches">
{colors.map((color, i) => (
<button
key={i}
style={{
backgroundColor: color,
display: 'inline-block',
width: '36px',
height: '20px',
border: 'none',
cursor: 'pointer'
}}
onClick={() => handleClick(color)}
></button>
))}
</div>
</label>
</fieldset>
</div>
</div>
</div>
);
};
export default MapboxExample;
This code snippet will not work as expected until you replace
YOUR_MAPBOX_ACCESS_TOKEN with an access token from your Mapbox account.Was this example helpful?