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diff --git a/misc/openlayers/examples/strategy-cluster.html b/misc/openlayers/examples/strategy-cluster.html new file mode 100644 index 0000000..d695f71 --- /dev/null +++ b/misc/openlayers/examples/strategy-cluster.html @@ -0,0 +1,238 @@ +<!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 Cluster Strategy Example</title> + <link rel="stylesheet" href="../theme/default/style.css" type="text/css"> + <link rel="stylesheet" href="style.css" type="text/css"> + <style type="text/css"> + #photos { + height: 100px; + width: 512px; + position: relative; + white-space: nowrap; + } + .shift { + height: 25px; + line-height: 25px; + background-color: #fefefe; + text-align: center; + position: absolute; + bottom: 10px; + font-size: 8px; + font-weight: bold; + color: #696969; + width: 25px; + } + #scroll-start { + left: 0px; + } + #scroll-end { + right: 0px; + } + #scroll { + left: 30px; + width: 452px; + height: 100px; + overflow: hidden; + position: absolute; + bottom: 0px; + } + #photos ul { + position: absolute; + bottom: 0px; + padding: 0; + margin: 0; + } + #photos ul.start { + left: 0px; + } + #photos ul.end { + right: 80px; + } + #photos ul li { + padding: 10px; + margin: 0; + list-style: none; + display: inline; + } + img.thumb { + height: 30px; + } + img.big { + height: 90px; + } + </style> + <script src="../lib/OpenLayers.js"></script> + <script src="Jugl.js"></script> + <script src="animator.js"></script> + <script type="text/javascript"> + + var map, template; + + /** + * A specific format for parsing Flickr API JSON responses. + */ + OpenLayers.Format.Flickr = OpenLayers.Class(OpenLayers.Format, { + read: function(obj) { + if(obj.stat === 'fail') { + throw new Error( + ['Flickr failure response (', + obj.code, + '): ', + obj.message].join('')); + } + if(!obj || !obj.photos || + !OpenLayers.Util.isArray(obj.photos.photo)) { + throw new Error( + 'Unexpected Flickr response'); + } + var photos = obj.photos.photo, photo, + x, y, point, + feature, features = []; + for(var i=0,l=photos.length; i<l; i++) { + photo = photos[i]; + x = photo.longitude; + y = photo.latitude; + point = new OpenLayers.Geometry.Point(x, y); + feature = new OpenLayers.Feature.Vector(point, { + title: photo.title, + img_url: photo.url_s + }); + features.push(feature); + } + return features; + } + }); + + function init() { + map = new OpenLayers.Map('map'); + var base = new OpenLayers.Layer.OSM(); + + var style = new OpenLayers.Style({ + pointRadius: "${radius}", + fillColor: "#ffcc66", + fillOpacity: 0.8, + strokeColor: "#cc6633", + strokeWidth: 2, + strokeOpacity: 0.8 + }, { + context: { + radius: function(feature) { + return Math.min(feature.attributes.count, 7) + 3; + } + } + }); + + var photos = new OpenLayers.Layer.Vector("Photos", { + projection: "EPSG:4326", + strategies: [ + new OpenLayers.Strategy.Fixed(), + new OpenLayers.Strategy.Cluster() + ], + protocol: new OpenLayers.Protocol.Script({ + url: "http://api.flickr.com/services/rest", + params: { + api_key: 'b5e8c0e287e678671c3d8b2c0f3ced85', + format: 'json', + method: 'flickr.photos.search', + extras: 'geo,url_s', + per_page: 150, + page: 1, + bbox: [-180, -90, 180, 90] + }, + callbackKey: 'jsoncallback', + format: new OpenLayers.Format.Flickr() + }), + styleMap: new OpenLayers.StyleMap({ + "default": style, + "select": { + fillColor: "#8aeeef", + strokeColor: "#32a8a9" + } + }) + }); + + var select = new OpenLayers.Control.SelectFeature( + photos, {hover: true} + ); + map.addControl(select); + select.activate(); + photos.events.on({"featureselected": display}); + + map.addLayers([base, photos]); + map.setCenter(new OpenLayers.LonLat(0, 0), 1); + + // template setup + template = new jugl.Template("template"); + + } + + function display(event) { + // clear previous photo list and create new one + document.getElementById("photos").innerHTML = ""; + var node = template.process({ + context: {features: event.feature.cluster}, + clone: true, + parent: document.getElementById("photos") + }); + // set up forward/rewind + var forward = Animator.apply(document.getElementById("list"), ["start", "end"], {duration: 1500}); + document.getElementById("scroll-end").onmouseover = function() {forward.seekTo(1)}; + document.getElementById("scroll-end").onmouseout = function() {forward.seekTo(forward.state)}; + document.getElementById("scroll-start").onmouseover = function() {forward.seekTo(0)}; + document.getElementById("scroll-start").onmouseout = function() {forward.seekTo(forward.state)}; + // set up photo zoom + for(var i=0; i<event.feature.cluster.length; ++i) { + listen(document.getElementById("link-" + i), Animator.apply(document.getElementById("photo-" + i), ["thumb", "big"])); + } + } + + function listen(el, anim) { + el.onmouseover = function() {anim.seekTo(1)}; + el.onmouseout = function() {anim.seekTo(0)}; + } + + </script> + </head> + <body onload="init()"> + <h1 id="title">Cluster Strategy Example</h1> + <div id="tags"> + vector, feature, stylemap, cluster, strategy, flickr, script + </div> + <p id="shortdesc"> + Uses a cluster strategy to render points representing clusters of features. + </p> + <div id="map" class="smallmap"></div> + <div id="docs"> + <p>The Cluster strategy lets you display points representing clusters + of features within some pixel distance.</p> + <p>This particular example uses the <a + href="http://www.flickr.com/services/api/">Flickr API.</a></p> + </div> + <div id="photos"></div> + <p>Hover over a cluster on the map to see the photos it includes.</p> + <div style="display: none;"> + <div id="template"> + <div class="shift" id="scroll-start"><<</div> + <div id="scroll"> + <ul id="list" class="start"> + <li jugl:repeat="feature features"> + <a jugl:attributes="href feature.attributes.img_url; + id 'link-' + repeat.feature.index" + target="_blank"> + <img jugl:attributes="src feature.attributes.img_url; + title feature.attributes.title; + id 'photo-' + repeat.feature.index" + class="thumb" /> + </a> + </li> + </ul> + </div> + <div class="shift" id="scroll-end">>></div> + </div> + </div> + </body> +</html> |