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Using the Google Maps API v3: How do I change the mouse cursor when I mouseover on a particular area?
626
Move around the map: Use the arrow keys. Tip: To move the map by one square, hold Shift and press the arrow keys.
Alternatively referred to as mouseover or mouse hover, hover describes the act of moving a mouse pointer over a clickable object, but not actually clicking the left or right mouse button. For example, when you hover your mouse over any of the links on this page, they should change color, indicating they can be clicked.
Yes, this is possible by setting draggableCursor in MapOptions, as in the following example:
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
<title>Google Maps v3 Change Cursor Demo</title>
<script src="http://maps.google.com/maps/api/js?sensor=false"
type="text/javascript"></script>
</head>
<body>
<div id="map" style="width: 500px; height: 350px"></div>
<script type="text/javascript">
var map = new google.maps.Map(document.getElementById("map"), {
mapTypeId: google.maps.MapTypeId.ROADMAP,
zoom: 8,
center: new google.maps.LatLng(-34.3, 150.6)
});
var ne = new google.maps.LatLng(-34.00, 150.00);
var nw = new google.maps.LatLng(-34.00, 150.50);
var sw = new google.maps.LatLng(-35.00, 150.50);
var se = new google.maps.LatLng(-35.00, 150.00);
var boundingBox = new google.maps.Polyline({
path: [ne, nw, sw, se, ne],
strokeColor: '#FF0000'
});
boundingBox.setMap(map);
google.maps.event.addListener(map, 'mousemove', function(event) {
if ((event.latLng.lat() > se.lat()) && (event.latLng.lat() < ne.lat()) &&
(event.latLng.lng() > ne.lng()) && (event.latLng.lng() < sw.lng())) {
map.setOptions({ draggableCursor: 'crosshair' });
}
else {
map.setOptions({ draggableCursor: 'url(http://maps.google.com/mapfiles/openhand.cur), move' });
}
});
</script>
</body>
</html>
If you run the above example, the cursor would change to a cross hair once the mouse is moved inside the red rectangle.
117
Other answers advising to to put 'mousemove' listeners on the whole map object will work but are wrong. This is 'heavy handed' and a bad idea as listeners like these can add up in a real application and when combined with other things happening on your map, can cause serious performance problems and possibly unforeseen race conditions!
The BEST way to do this is to use the google.maps.Polygon class. This allows you to pass a series of LatLng objects to create a Polygon. This polygon is rendered on the map and has a default mouseover attribute of 'pointer', you can add a 'mouseover' listener to the object returned from the new google.maps.Polygon class call.
The source below is from this example http://code.google.com/apis/maps/documentation/javascript/examples/polygon-simple.html
var myLatLng = new google.maps.LatLng(24.886436490787712, -70.2685546875);
var myOptions = {
zoom: 5,
center: myLatLng,
mapTypeId: google.maps.MapTypeId.TERRAIN
};
var bermudaTriangle;
map = new google.maps.Map(document.getElementById("map_canvas"),
myOptions);
var triangleCoords = [
new google.maps.LatLng(25.774252, -80.190262),
new google.maps.LatLng(18.466465, -66.118292),
new google.maps.LatLng(32.321384, -64.75737)
];
bermudaTriangle = new google.maps.Polygon({
paths: triangleCoords,
strokeColor: "#FF0000",
strokeOpacity: 0.8,
strokeWeight: 3,
fillColor: "#FF0000",
fillOpacity: 0.35
});
bermudaTriangle.setMap(map);
Then I can add the listener like this
google.maps.event.addListener(bermudaTriangle, 'mouseover', function() {
map.setZoom(8);
});
//now if you mouse over the Polygon area, your map will zoom to 8
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