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  • Committer: larshelge at gmail
  • Date: 2009-03-03 16:46:36 UTC
  • Revision ID: larshelge@gmail.com-20090303164636-2sjlrquo7ib1gf7r
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gis/dhis-gis-geostat/mfbase/openlayers/tests/manual/tiles-loading.html
 
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<html xmlns="http://www.w3.org/1999/xhtml">
 
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  <head>
 
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    <title>Tiles Loading Acceptance Test</title>
 
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    <style type="text/css">
 
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        body {
 
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            font-size: 0.8em;
 
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        }
 
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        p {
 
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            padding-top: 1em;
 
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        }
 
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        #map {
 
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            margin: 1em;
 
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            float: left;
 
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            width: 512px;
 
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            height: 512px;
 
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        }
 
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    </style>
 
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    <script src='http://maps.google.com/maps?file=api&amp;v=2.82&amp;key=ABQIAAAAjpkAC9ePGem0lIq5XcMiuhR_wWLPFku8Ix9i2SXYRVK3e45q1BQUd_beF8dtzKET_EteAjPdGDwqpQ'></script>
 
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    <script src="../../lib/OpenLayers.js"></script>
 
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    <script type="text/javascript">
 
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        // make map available for easy debugging
 
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        var map;
 
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        // avoid pink tiles
 
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        OpenLayers.IMAGE_RELOAD_ATTEMPTS = 3;
 
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        OpenLayers.Util.onImageLoadErrorColor = "transparent";
 
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        function init(){
 
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            var options = {
 
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                controls: [],
 
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                projection: "EPSG:900913",
 
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                units: "m",
 
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                maxResolution: 156543.0339,
 
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                maxExtent: new OpenLayers.Bounds(-20037508, -20037508,
 
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                                                 20037508, 20037508.34)
 
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            };
 
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            map = new OpenLayers.Map('map', options);
 
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            // create Google Mercator layers
 
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            var gmap = new OpenLayers.Layer.Google(
 
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                "Google Streets",
 
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                {'sphericalMercator': true}
 
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            );
 
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            // create WMS layer
 
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            var wmsMaxResolution = 78271.51695;
 
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            var wms = new OpenLayers.Layer.WMS(
 
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                "World Map",
 
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                "http://world.freemap.in/tiles/",
 
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                {'layers': 'factbook-overlay', 'format':'png'},
 
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                {
 
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                    'opacity': 0.4,
 
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                    'isBaseLayer': false,
 
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                    'wrapDateLine': true,
 
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                    'buffer': 0,
 
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                    'maxResolution' : wmsMaxResolution
 
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                }
 
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            );
 
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            map.addLayers([gmap, wms]);
 
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            map.addControl(new OpenLayers.Control.Navigation());
 
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            map.addControl(new OpenLayers.Control.LayerSwitcher());
 
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            map.addControl(new OpenLayers.Control.PanZoomBar());
 
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            function onLayerChanged() {
 
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                var html = '<p>WMS Layer state - in range: '
 
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                    + this.inRange
 
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                    + ', visibility: '
 
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                    + this.visibility;
 
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                    + '</p>';
 
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                document.getElementById('layerstate').innerHTML = html;
 
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            }
 
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            map.events.register('changelayer', wms, onLayerChanged);
 
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            function onTileLoaded() {
 
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                var html = '<p>Message: ';
 
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                if (this.numLoadingTiles > 0) {
 
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                    html += 'Loading tiles...';
 
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                } else {
 
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                    html += 'Done loading tiles';
 
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                }
 
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                html += '</p>';
 
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                document.getElementById('tilesloading').innerHTML = html;
 
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            }
 
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            wms.events.register('tileloaded', wms, onTileLoaded);
 
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            map.zoomToMaxExtent()
 
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        }
 
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    </script>
 
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  </head>
 
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  <body onload="init()">
 
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    <div id="map"></div>
 
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    <p>
 
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      <b>Test 0</b> : at the initial zoom the WMS layer is in range, you should
 
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      therefore see the 'Loading tiles...' message when loading the page for
 
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      the first time.
 
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    </p>
 
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    <p>
 
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      <b>Test 1</b> : If you zoom out by one level (using the zoombar), the WMS
 
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      layer becomes out of range. No tile should be loaded so you shouldn't see
 
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      the 'Loading tiles...' message.
 
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    </p>
 
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    <p>
 
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      <b>Test 2</b> : Zoom in by one level to go back to initial state (the WMS
 
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      is back). Open the layer switcher and turn off the WMS layer. No tile
 
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      should be loaded so you shouldn't see the 'Loading tiles...' message.
 
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    </p>
 
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    <p>
 
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      <b>Test 3</b> : Keep the WMS layer turned off in the layer switcher. Zoom
 
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      out by one level again. The layer is both invisible and out of range, so
 
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      you shouldn't see the 'Loading tiles...' message.
 
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    </p>
 
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    <div id="layerstate"><p>WMS Layer state - in range: true, visibility: true</p></div>
 
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    <div id="tilesloading"><p>Message:</p></div>
 
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  </body>
 
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</html>