Merge pull request #3015 from klokantech/utfgrid

UTFGrid Support
2014-12-12 12:37:37 +01:00
parent 31f7279de1 65583a8b77
commit 2c9fab22c8
5 changed files with 597 additions and 0 deletions
--- a/examples/tileutfgrid.html
+++ b/examples/tileutfgrid.html
@@ -0,0 +1,69 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta http-equiv="X-UA-Compatible" content="chrome=1">
+    <meta name="viewport" content="initial-scale=1.0, user-scalable=no, width=device-width">
+    <link rel="stylesheet" href="../css/ol.css" type="text/css">
+    <link rel="stylesheet" href="../resources/bootstrap/css/bootstrap.min.css" type="text/css">
+    <link rel="stylesheet" href="../resources/layout.css" type="text/css">
+    <link rel="stylesheet" href="../resources/bootstrap/css/bootstrap-responsive.min.css" type="text/css">
+    <style type="text/css">
+      #country-name {
+        color: black;
+        font-size: 12pt;
+        font-weight: bold;
+        text-shadow: white 0.1em 0.1em 0.2em;
+      }
+    </style>
+    <title>TileUTFGrid example</title>
+  </head>
+  <body>
+
+    <div class="navbar navbar-inverse navbar-fixed-top">
+      <div class="navbar-inner">
+        <div class="container">
+          <a class="brand" href="./"><img src="../resources/logo.png"> OpenLayers 3 Examples</a>
+        </div>
+      </div>
+    </div>
+
+    <div class="container-fluid">
+
+      <div class="row-fluid">
+        <div class="span12">
+          <div id="map" class="map"></div>
+        </div>
+      </div>
+
+      <div class="row-fluid">
+
+        <div class="span12">
+          <h4 id="title">TileUTFGrid example</h4>
+          <p id="shortdesc">This example shows how to read data from a TileUTFGrid layer.</p>
+          <p>Point to a country to see its name and flag.</p>
+          <div id="docs">
+            <p>Tiles made with <a href="http://tilemill.com/">TileMill</a>. Hosting on MapBox.com or with open-source <a href="https://github.com/klokantech/tileserver-php/">TileServer</a>.</p>
+            <p>See the <a href="tileutfgrid.js" target="_blank">tileutfgrid.js source</a> to see how this is done.</p>
+          </div>
+          <div id="tags">utfgrid, tileutfgrid, tilejson</div>
+        </div>
+
+      </div>
+
+    </div>
+
+    <div style="display: none;">
+      <!-- Overlay with the country info -->
+      <div id="country-info">
+        <div id="country-name">&nbsp;</div>
+        <img id="country-flag" src="" />
+      </div>
+    </div>
+
+    <script src="../resources/jquery.min.js" type="text/javascript"></script>
+    <script src="../resources/example-behaviour.js" type="text/javascript"></script>
+    <script src="loader.js?id=tileutfgrid" type="text/javascript"></script>
+
+  </body>
+</html>
--- a/examples/tileutfgrid.js
+++ b/examples/tileutfgrid.js
@@ -0,0 +1,68 @@
+goog.require('ol.Map');
+goog.require('ol.Overlay');
+goog.require('ol.View');
+goog.require('ol.layer.Tile');
+goog.require('ol.source.TileJSON');
+goog.require('ol.source.TileUTFGrid');
+
+var mapLayer = new ol.layer.Tile({
+  source: new ol.source.TileJSON({
+    url: 'http://api.tiles.mapbox.com/v3/mapbox.geography-class.json'
+  })
+});
+
+var gridSource = new ol.source.TileUTFGrid({
+  url: 'http://api.tiles.mapbox.com/v3/mapbox.geography-class.json'
+});
+
+var gridLayer = new ol.layer.Tile({source: gridSource});
+
+var view = new ol.View({
+  center: [0, 0],
+  zoom: 1
+});
+
+var mapElement = document.getElementById('map');
+var map = new ol.Map({
+  layers: [mapLayer, gridLayer],
+  target: mapElement,
+  view: view
+});
+
+var infoElement = document.getElementById('country-info');
+var flagElement = document.getElementById('country-flag');
+var nameElement = document.getElementById('country-name');
+
+var infoOverlay = new ol.Overlay({
+  element: infoElement,
+  offset: [15, 15],
+  stopEvent: false
+});
+map.addOverlay(infoOverlay);
+
+var displayCountryInfo = function(coordinate) {
+  var viewResolution = /** @type {number} */ (view.getResolution());
+  gridSource.forDataAtCoordinateAndResolution(coordinate, viewResolution,
+      function(data) {
+        // If you want to use the template from the TileJSON,
+        //  load the mustache.js library separately and call
+        //  info.innerHTML = Mustache.render(gridSource.getTemplate(), data);
+        mapElement.style.cursor = data ? 'pointer' : '';
+        if (data) {
+          /* jshint -W069 */
+          flagElement.src = 'data:image/png;base64,' + data['flag_png'];
+          nameElement.innerHTML = data['admin'];
+          /* jshint +W069 */
+        }
+        infoOverlay.setPosition(data ? coordinate : undefined);
+      });
+};
+
+$(map.getViewport()).on('mousemove', function(evt) {
+  var coordinate = map.getEventCoordinate(evt.originalEvent);
+  displayCountryInfo(coordinate);
+});
+
+map.on('click', function(evt) {
+  displayCountryInfo(evt.coordinate);
+});