speed_test.js
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/**
* @fileoverview This demo is used for MarkerClusterer. It will show 100 markers
* using MarkerClusterer and count the time to show the difference between using
* MarkerClusterer and without MarkerClusterer.
* @author Luke Mahe (v2 author: Xiaoxi Wu)
*/
function $(element) {
return document.getElementById(element);
}
var speedTest = {};
speedTest.pics = null;
speedTest.map = null;
speedTest.markerClusterer = null;
speedTest.markers = [];
speedTest.infoWindow = null;
speedTest.init = function() {
var latlng = new google.maps.LatLng(39.91, 116.38);
var options = {
'zoom': 2,
'center': latlng,
'mapTypeId': google.maps.MapTypeId.ROADMAP
};
speedTest.map = new google.maps.Map($('map'), options);
speedTest.pics = data.photos;
var useGmm = document.getElementById('usegmm');
google.maps.event.addDomListener(useGmm, 'click', speedTest.change);
var numMarkers = document.getElementById('nummarkers');
google.maps.event.addDomListener(numMarkers, 'change', speedTest.change);
speedTest.infoWindow = new google.maps.InfoWindow();
speedTest.showMarkers();
};
speedTest.showMarkers = function() {
speedTest.markers = [];
var type = 1;
if ($('usegmm').checked) {
type = 0;
}
if (speedTest.markerClusterer) {
speedTest.markerClusterer.clearMarkers();
}
var panel = $('markerlist');
panel.innerHTML = '';
var numMarkers = $('nummarkers').value;
for (var i = 0; i < numMarkers; i++) {
var titleText = speedTest.pics[i].photo_title;
if (titleText === '') {
titleText = 'No title';
}
var item = document.createElement('DIV');
var title = document.createElement('A');
title.href = '#';
title.className = 'title';
title.innerHTML = titleText;
item.appendChild(title);
panel.appendChild(item);
var latLng = new google.maps.LatLng(speedTest.pics[i].latitude,
speedTest.pics[i].longitude);
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));
var marker = new google.maps.Marker({
'position': latLng,
'icon': markerImage
});
var fn = speedTest.markerClickFunction(speedTest.pics[i], latLng);
google.maps.event.addListener(marker, 'click', fn);
google.maps.event.addDomListener(title, 'click', fn);
speedTest.markers.push(marker);
}
window.setTimeout(speedTest.time, 0);
};
speedTest.markerClickFunction = function(pic, latlng) {
return function(e) {
e.cancelBubble = true;
e.returnValue = false;
if (e.stopPropagation) {
e.stopPropagation();
e.preventDefault();
}
var title = pic.photo_title;
var url = pic.photo_url;
var fileurl = pic.photo_file_url;
var infoHtml = '<div class="info"><h3>' + title +
'</h3><div class="info-body">' +
'<a href="' + url + '" target="_blank"><img src="' +
fileurl + '" class="info-img"/></a></div>' +
'<a href="http://www.panoramio.com/" target="_blank">' +
'<img src="http://maps.google.com/intl/en_ALL/mapfiles/' +
'iw_panoramio.png"/></a><br/>' +
'<a href="' + pic.owner_url + '" target="_blank">' + pic.owner_name +
'</a></div></div>';
speedTest.infoWindow.setContent(infoHtml);
speedTest.infoWindow.setPosition(latlng);
speedTest.infoWindow.open(speedTest.map);
};
};
speedTest.clear = function() {
$('timetaken').innerHTML = 'cleaning...';
for (var i = 0, marker; marker = speedTest.markers[i]; i++) {
marker.setMap(null);
}
};
speedTest.change = function() {
speedTest.clear();
speedTest.showMarkers();
};
speedTest.time = function() {
$('timetaken').innerHTML = 'timing...';
var start = new Date();
if ($('usegmm').checked) {
speedTest.markerClusterer = new MarkerClusterer(speedTest.map, speedTest.markers);
} else {
for (var i = 0, marker; marker = speedTest.markers[i]; i++) {
marker.setMap(speedTest.map);
}
}
var end = new Date();
$('timetaken').innerHTML = end - start;
};