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krusynth/gmaps_api_hax.html

Created July 3, 2012 15:49
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Google Maps API Markers adding custom data to clicks, also Marker Clustering for large numbers of marker pins
Raw
gmaps_api_hax.html
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<style type="text/css">
html { height: 100% }
body { height: 100%; margin: 0; padding: 0 }
#map_canvas { height: 100% }
</style>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
<script src="map.json"></script>
<script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?key=AIzaSyDQCAf3BpPm2bDERFkXORaQjdiwtC4meDM&sensor=false"></script>
<script type="text/javascript" src="markerclusterer_packed.2_0_9.js"></script>
<script type="text/javascript">
function initialize() {
/*
We have to do a bit of trickery to get the custom data
for the profile into the marker. Google Maps API gives
you a different object - NOT a marker - on the pin click.
As a result, we use a function as a closure to make sure
we have access to the profile in that context.
For the MarkerClusterer click, we *do* have a real marker,
so we can attach all the custom data we want to itm, via
the prototype.
*/
/* Custom getters & setters */
google.maps.Marker.prototype.getCustomData = function(key) {
if(typeof(this.custom_data) === 'undefined') {
this.custom_data = {};
}
if(typeof(key) !== 'undefined') {
return this.custom_data[key];
}
else {
return this.custom_data;
}
}
google.maps.Marker.prototype.setCustomData = function(key, value) {
if(typeof(this.custom_data) === 'undefined') {
this.custom_data = {};
}
if(typeof(value) !== 'undefined') {
this.custom_data[key] = value;
}
else {
this.custom_data = key;
}
}
var myOptions = {
center: new google.maps.LatLng(40.686962, -73.986425),
zoom: 13,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById("map_canvas"),
myOptions);
var imageUrl = 'http://chart.apis.google.com/chart?cht=mm&chs=24x32&' +
'chco=FFFFFF,008CFF,000000&ext=.png';
var markerImage = new google.maps.MarkerImage(imageUrl,
new google.maps.Size(24, 32));
markers = [];
for( key in map_data.data ) {
var loc = map_data.data[key];
marker = createMarker(loc);
markers.push(marker);
}
function createMarker(loc) {
var latLng = new google.maps.LatLng(parseFloat(loc.latitude),parseFloat(loc.longitude))
var marker = new google.maps.Marker({
position: latLng,
draggable: false,
icon: markerImage,
title: "test"
});
var profile = loc.profile;
marker.setCustomData('profile', profile);
google.maps.event.addListener(marker, "click", function (marker) {
console.log( build_profile( profile ) );
});
return marker;
}
var mc = new MarkerClusterer(map, markers, {
zoomOnClick: false
});
google.maps.event.addListener(mc, "click", function (cluster) {
// Find number of unique LatLng in clusters
var clusterMarkers = cluster.getMarkers();
var profile_list = ""
for(var j = 0; j < clusterMarkers.length; j++) {
profile_list += build_profile( clusterMarkers[j].getCustomData('profile') );
}
console.log(profile_list);
});
function build_profile(profile) {
return profile.first_name+' '+profile.last_name+"\n";
}
}
</script>
</head>
<body onload="initialize()">
<div id="map_canvas" style="width:100%; height:100%"></div>
</body>
</html>
Raw
markerclusterer_packed.2_0_9.js
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