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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
<meta name="apple-mobile-web-app-capable" content="yes">
<title>Overview Map Example</title>
<link rel="stylesheet" href="openlayers/theme/default/style.css" type="text/css">
<link rel="stylesheet" href="style.css" type="text/css">
<script src="openlayers/OpenLayers.js" type="text/javascript"></script>
<style>
#map1 {
width: 500px;
height: 300px;
border: 1px solid gray;
}
#map2 {
width: 500px;
height: 300px;
border: 1px solid gray;
}
</style>
</head>
<body>
<h1 id="title">Overview Map</h1>
<div id="tags">
overview, mapOptions, basic
</div>
<p id="shortdesc">
Enable a small Overview Map that moves/interacts with your main map.
</p>
<div id="map1"></div>
<p>The above map has an overview map control that is created with
the default options. Much like a regular map, the map contained by
the overview map control defaults to a geographic projection.</p>
<div id="map2"></div>
<p>The second map has an overview map control that is created with
non-default options. In this case, the mapOptions property of the
control has been set to use non-default projection related properties,
and the layers property has been set to use a layer different from the main
map. In addition, any other properties of the overview map control can be
set in this way.</p>
<script defer="defer" type="text/javascript">
// set up some layers
var ol = new OpenLayers.Layer.WMS(
"OpenLayers WMS",
"http://vmap0.tiles.osgeo.org/wms/vmap0",
{layers: 'basic'}
);
var jpl = new OpenLayers.Layer.WMS(
"NASA Global Mosaic",
"http://t1.hypercube.telascience.org/cgi-bin/landsat7",
{layers: "landsat7"}
);
// A clone of the above layer that we will use as overview for map2.
// We need to clone jpl before the it gets added to a map, so the
// clone can have its own maxExtent and maxResolution instead of
// getting these settings initialized from map1.
var jplOverview = jpl.clone();
// A more detailled layer of Manhattan for map2
var ny = new OpenLayers.Layer.WMS(
"Manhattan",
"http://demo.opengeo.org/geoserver/wms",
{
layers: 'tiger-ny',
format: 'image/png'
}
);
// create the top map (with default overview map control)
var map1 = new OpenLayers.Map('map1');
map1.addLayers([ol, jpl]);
map1.addControl(new OpenLayers.Control.LayerSwitcher());
// create an overview map control with the default options
var overview1 = new OpenLayers.Control.OverviewMap({
maximized: true,
maximizeTitle: 'Show the overview map',
minimizeTitle: 'Hide the overview map'
});
map1.addControl(overview1);
map1.setCenter(new OpenLayers.LonLat(0, 0), 2);
// create the bottom map (with advanced overview map control)
var mapOptions = {
maxExtent: new OpenLayers.Bounds(-8242894.927728, 4965204.031195,
-8227290.161511, 4994963.723637),
maxResolution: 116.24879860156216,
projection: "EPSG:900913"
};
var map2 = new OpenLayers.Map('map2', mapOptions);
map2.addLayers([ny]);
// create an overview map control with non-default options
var controlOptions = {
maximized: true,
mapOptions: OpenLayers.Util.extend(mapOptions, {
maxResolution: 156543.0339,
maxExtent: new OpenLayers.Bounds(-20037508.34, -20037508.34,
20037508.34, 20037508.34)
}),
layers: [jplOverview]
};
var overview2 = new OpenLayers.Control.OverviewMap(controlOptions);
map2.addControl(overview2);
map2.setCenter(new OpenLayers.LonLat(-8233165.3575055, 4980298.21113769), 3);
</script>
</body>
</html>
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