cdb

2020-06-15 12:07:54 +08:00
parent 610ed21a90
commit a96ef233c9
444 changed files with 0 additions and 0 deletions
--- a/lib/assets/javascripts/cdb/examples/leaflet_hover_features.html
+++ b/lib/assets/javascripts/cdb/examples/leaflet_hover_features.html
@@ -0,0 +1,108 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>Leaflet example | CartoDB.js</title>
+    <meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
+    <meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
+    <link rel="shortcut icon" href="http://cartodb.com/assets/favicon.ico" />
+    <style>
+      html, body, #map {
+        height: 100%;
+        padding: 0;
+        margin: 0;
+      }
+    </style>
+    <link rel="stylesheet" href="https://libs.cartocdn.com/cartodb.js/v3/3.15/themes/css/cartodb.css" />
+  </head>
+  <body>
+    <div id="map"></div>
+
+    <!-- include cartodb.js library -->
+    <script src="https://libs.cartocdn.com/cartodb.js/v3/3.15/cartodb.js"></script>
+
+    <script>
+      function main() {
+        var map = new L.Map('map', {
+          zoomControl: false,
+          center: [43, 0],
+          zoom: 3
+        });
+
+        var polygons = {};
+
+        L.tileLayer('http://tile.stamen.com/toner/{z}/{x}/{y}.png', {
+          attribution: 'Stamen'
+        }).addTo(map);
+
+
+        function geometryHover(username, map, layer, options) {
+
+          options = options || {}
+          var HIGHLIGHT_STYLE = {
+            weight: 3,
+            color: '#FFFFFF',
+            opacity: 1,
+            fillColor: '#FFFFFF',
+            fillOpacity: 0.3
+          };
+          style = options.style || HIGHLIGHT_STYLE;
+          var polygonsHighlighted = [];
+
+
+          // fetch the geometry
+          var sql = new cartodb.SQL({ user: username, format: 'geojson' });
+          sql.execute("select cartodb_id, ST_Simplify(the_geom, 0.1) as the_geom from (" + layer.getQuery() + ") as _wrap").done(function(geojson) {
+            var features = geojson.features;
+            for(var i = 0; i < features.length; ++i) {
+              var f = geojson.features[i];
+              var key = f.properties.cartodb_id
+
+              // generate geometry
+              var geo = L.GeoJSON.geometryToLayer(features[i].geometry);
+              geo.setStyle(style);
+
+              // add to polygons
+              polygons[key] = polygons[key] ||  [];
+              polygons[key].push(geo);
+            }
+          });
+
+          function featureOver(e, latlng, pos, data) {
+            featureOut();
+            var pol = polygons[data.cartodb_id] || [];
+            for(var i = 0; i < pol.length; ++i) {
+              map.addLayer(pol[i]);
+              polygonsHighlighted.push(pol[i]);
+            }
+          }
+
+          function featureOut() {
+            var pol = polygonsHighlighted;
+            for(var i = 0; i < pol.length; ++i) {
+              map.removeLayer(pol[i]);
+            }
+            polygonsHighlighted = [];
+          }
+
+          layer.on('featureOver', featureOver);
+          layer.on('featureOut', featureOut);
+          layer.setInteraction(true);
+
+        }
+
+
+
+        cartodb.createLayer(map, 'http://documentation.cartodb.com/api/v2/viz/2b13c956-e7c1-11e2-806b-5404a6a683d5/viz.json')
+         .addTo(map)
+         .on('done', function(layer) {
+           geometryHover('documentation', map, layer.getSubLayer(0));
+        }).on('error', function() {
+          cartodb.log.log("some error occurred");
+        });
+      }
+
+      // you could use $(window).load(main);
+      window.onload = main;
+    </script>
+  </body>
+</html>