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Diffstat (limited to 'misc/openlayers/examples/styles-context.html')
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diff --git a/misc/openlayers/examples/styles-context.html b/misc/openlayers/examples/styles-context.html deleted file mode 100644 index 853e8c3..0000000 --- a/misc/openlayers/examples/styles-context.html +++ /dev/null @@ -1,117 +0,0 @@ -<!DOCTYPE html> -<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 Vector Styles</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', {maxResolution:'auto'}); - var wms = new OpenLayers.Layer.WMS( "OpenLayers WMS", - "http://vmap0.tiles.osgeo.org/wms/vmap0", {layers: 'basic'} ); - map.addLayer(wms); - map.setCenter(new OpenLayers.LonLat(0, 0), 0); - - // Strategy 1: Style features based on some attribute. - - // create 50 random features in the northern hemisphere - // give them a "type" attribute that will be used to style - // them by size - var features = new Array(50); - for (var i=0; i<features.length; i++) { - features[i] = new OpenLayers.Feature.Vector( - new OpenLayers.Geometry.Point( - (360 * Math.random()) - 180, 90 * Math.random() - ), { - type: 5 + parseInt(5 * Math.random()) - } - ); - } - - // 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; - - // create the layer styleMap with a simple symbolizer template - var layer1 = new OpenLayers.Layer.Vector('Points', { - styleMap: new OpenLayers.StyleMap({ - pointRadius: "${type}", // based on feature.attributes.type - fillColor: "#666666" - }), - renderers: renderer - }); - layer1.addFeatures(features); - - // Strategy 2: Style features based on something besides attributes. - - // create 50 random features in the southern hemisphere - var features = new Array(50); - for (var i=0; i<features.length; i++) { - features[i] = new OpenLayers.Feature.Vector( - new OpenLayers.Geometry.Point( - (360 * Math.random()) - 180, -90 * Math.random() - ), { - type: 5 + parseInt(5 * Math.random()) - } - ); - } - // create the layer styleMap by giving the default style a context - var colors = ["red", "green", "blue"]; - var context = { - getColor: function(feature) { - var region = parseInt((feature.geometry.x + 180) / 120); - return colors[region]; - }, - getSize: function(feature) { - return feature.attributes["type"] / map.getResolution() * .703125; - } - }; - var template = { - pointRadius: "${getSize}", // using context.getSize(feature) - fillColor: "${getColor}" // using context.getColor(feature) - }; - var style = new OpenLayers.Style(template, {context: context}); - var layer2 = new OpenLayers.Layer.Vector('Points', { - styleMap: new OpenLayers.StyleMap(style), - renderers: renderer - }); - layer2.addFeatures(features); - - - map.addLayers([layer1, layer2]); - } - </script> - </head> - <body onload="init()"> - <h1 id="title">Feature Styles Example</h1> - - <div id="tags"> - vector, feature, stylemap, light - </div> - - <p id="shortdesc"> - To style features with a custom function that evaluates each feature, use - the context option of an OpenLayers.Style object. If the context object - contains a function and this function is referenced in a symbolizer, the - function will be called with the feature as an argument.. - </p> - - <div id="map" class="smallmap"></div> - - <div id="docs"> - <p>Features in the northern hemisphere are styled according to their - "type" attribute. This is accomplished with a simple template that - is evaluated with the feature attributes as context.</p> - <p>Features in the sourthern hemisphere are styled according to a - combination of their attributes and non-attribute properties. This - is accomplished using an advanced template that calls functions - on the context object passed to the Style constructor.</p> - </div> - </body> -</html> |