stoqs/static/OpenLayers-2.11/examples/vector-features-with-text.html

<!DOCTYPE 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>OpenLayers Labeled Features Example</title>
    <link rel="stylesheet" href="../theme/default/style.css" type="text/css">
    <link rel="stylesheet" href="style.css" type="text/css">
    <script src="../lib/OpenLayers.js"></script>
    <script type="text/javascript">
        var map;

        function init(){
            map = new OpenLayers.Map('map');
            
            var layer = new OpenLayers.Layer.WMS( "OpenLayers WMS", 
                    "http://vmap0.tiles.osgeo.org/wms/vmap0", {layers: 'basic'} );
            map.addLayer(layer);
            
            // allow testing of specific renderers via "?renderer=Canvas", etc
            var renderer = OpenLayers.Util.getParameters(window.location.href).renderer;
            renderer = (renderer) ? [renderer] : OpenLayers.Layer.Vector.prototype.renderers;
            
            var vectorLayer = new OpenLayers.Layer.Vector("Simple Geometry", {
                styleMap: new OpenLayers.StyleMap({'default':{
                    strokeColor: "#00FF00",
                    strokeOpacity: 1,
                    strokeWidth: 3,
                    fillColor: "#FF5500",
                    fillOpacity: 0.5,
                    pointRadius: 6,
                    pointerEvents: "visiblePainted",
                    // label with \n linebreaks
                    label : "name: ${name}\n\nage: ${age}",
                    
                    fontColor: "${favColor}",
                    fontSize: "12px",
                    fontFamily: "Courier New, monospace",
                    fontWeight: "bold",
                    labelAlign: "${align}",
                    labelXOffset: "${xOffset}",
                    labelYOffset: "${yOffset}"
                }}),
                renderers: renderer
            });
            
            // create a point feature
            var point = new OpenLayers.Geometry.Point(-111.04, 45.68);
            var pointFeature = new OpenLayers.Feature.Vector(point);
            pointFeature.attributes = {
                name: "toto",
                age: 20,
                favColor: 'red',
                align: "cm"
            };
            
            // create a polygon feature from a linear ring of points
            var pointList = [];
            for(var p=0; p<6; ++p) {
                var a = p * (2 * Math.PI) / 7;
                var r = Math.random(1) + 1;
                var newPoint = new OpenLayers.Geometry.Point(point.x + 5 + (r * Math.cos(a)),
                                                             point.y + 5 + (r * Math.sin(a)));
                pointList.push(newPoint);
            }
            pointList.push(pointList[0]);
            
            var linearRing = new OpenLayers.Geometry.LinearRing(pointList);
            var polygonFeature = new OpenLayers.Feature.Vector(
                new OpenLayers.Geometry.Polygon([linearRing]));
            polygonFeature.attributes = {
                name: "dude",
                age: 21,
                favColor: 'purple',
                align: 'lb'
            };
            
            multiFeature = new OpenLayers.Feature.Vector(
                new OpenLayers.Geometry.Collection([
                    new OpenLayers.Geometry.LineString([
                        new OpenLayers.Geometry.Point(-105,40),
                        new OpenLayers.Geometry.Point(-95,45)
                    ]),
                    new OpenLayers.Geometry.Point(-105, 40)
                ]),
                {
                    name: "ball-and-chain",
                    age: 30,
                    favColor: 'black',
                    align: 'rt'
                });

            // Create a point feature to show the label offset options
            var labelOffsetPoint = new OpenLayers.Geometry.Point(-101.04, 35.68);
            var labelOffsetFeature = new OpenLayers.Feature.Vector(labelOffsetPoint);
            labelOffsetFeature.attributes = {
                name: "offset",
                age: 22,
                favColor: 'blue',
                align: "cm",
                // positive value moves the label to the right
                xOffset: 50,
                // negative value moves the label down
                yOffset: -15
            };


            var nullFeature = new OpenLayers.Feature.Vector(null);
            nullFeature.attributes = {
                name: "toto is some text about the world",
                age: 20,
                favColor: 'red',
                align: "cm"
            };
            
            map.addLayer(vectorLayer);
            vectorLayer.drawFeature(multiFeature);
            map.setCenter(new OpenLayers.LonLat(-109.370078125, 43.39484375), 4);
            vectorLayer.addFeatures([pointFeature, polygonFeature, multiFeature, labelOffsetFeature, nullFeature ]);
        }
    </script>
  </head>
  <body onload="init()">
    <h1 id="title">OpenLayers Labeled features example</h1>
    <div id="tags">
        vector, feature, labeling, symbolizer
    </div>
    <p id="shortdesc">
        Label vector features with a text symbolizer.
    </p>
    <div id="map" class="smallmap"></div>
    <div id="docs">
    <p>This example shows drawing simple vector features with a label.</p>
    </div>
  </body>
</html>