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July 29, 2013 08:08
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Cartodb.js example changing the cursor when hover on features
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<!DOCTYPE html> | |
<html> | |
<head> | |
<title>Leaflet multilayer example | CartoDB.js</title> | |
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" /> | |
<meta http-equiv="content-type" content="text/html; charset=UTF-8"/> | |
<link rel="shortcut icon" href="http://cartodb.com/assets/favicon.ico" /> | |
<style> | |
html, body, #map { | |
height: 100%; | |
padding: 0; | |
margin: 0; | |
} | |
</style> | |
<link rel="stylesheet" href="http://libs.cartocdn.com/cartodb.js/v3/themes/css/cartodb.css" /> | |
<!--[if lte IE 8]> | |
<link rel="stylesheet" href="http://libs.cartocdn.com/cartodb.js/v3/themes/css/cartodb.ie.css" /> | |
<![endif]--> | |
</head> | |
<body> | |
<div id="map"></div> | |
<!-- include cartodb.js library --> | |
<script src="http://libs.cartocdn.com/cartodb.js/v3/cartodb.js"></script> | |
<script> | |
function addCursorInteraction(layer) { | |
var hovers = []; | |
layer.bind('featureOver', function(e, latlon, pxPos, data, layer) { | |
hovers[layer] = 1; | |
if(_.any(hovers)) { | |
$('#map').css('cursor', 'pointer'); | |
} | |
}); | |
layer.bind('featureOut', function(m, layer) { | |
hovers[layer] = 0; | |
if(!_.any(hovers)) { | |
$('#map').css('cursor', 'auto'); | |
} | |
}); | |
} | |
function main() { | |
// create leaflet map | |
var map = L.map('map', { | |
zoomControl: false, | |
center: [43, 0], | |
zoom: 3 | |
}) | |
// add a base layer | |
L.tileLayer('http://tile.stamen.com/toner/{z}/{x}/{y}.png', { | |
attribution: 'Stamen' | |
}).addTo(map); | |
// add cartodb layer with one sublayer | |
cartodb.createLayer(map, { | |
user_name: 'examples', | |
type: 'cartodb', | |
sublayers: [{ | |
sql: 'select * from country_boundaries', | |
cartocss: '#layer { polygon-fill: #F00; polygon-opacity: 0.3; line-color: #F00; }', | |
interactivity: 'cartodb_id' | |
}] | |
}) | |
.addTo(map) | |
.done(function(layer) { | |
// enable interaction for the | |
layer.getSubLayer(0).setInteraction(true); | |
addCursorInteraction(layer); | |
}); | |
} | |
// you could use $(window).load(main); | |
window.onload = main; | |
</script> | |
</body> | |
</html> |
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