Question

下面的地图具有内置搜索功能，可在提交搜索时放置图钉。

地图还有一个 GeoJson 图层，如果点击它会打开一个信息窗口。

目前信息窗口只能在用户手动点击多边形时打开。

是否有可能在用户搜索地址时说“Calgary Canada”，当引脚掉落时它会自动打开信息窗口？

如果标记下方没有多边形，则不应打开任何内容。

     // This example adds a search box to a map, using the Google Place Autocomplete
      // feature. People can enter geographical searches. The search box will return a
      // pick list containing a mix of places and predicted search terms.

      // This example requires the Places library. Include the libraries=places
      // parameter when you first load the API. For example:
      // <script src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&libraries=places">
        
      function initAutocomplete() {
        var map = new google.maps.Map(document.getElementById('map'), {
          zoom: 5,
          center: {lat: 49.656963, lng: -112.506664},
          mapTypeId: 'roadmap',
          gestureHandling: 'greedy'
        });
          
          map.data.loadGeoJson('https://api.npoint.io/a5cec0395277a59090e7');

        // Color each letter gray. Change the color when the isColorful property
        // is set to true.
        map.data.setStyle(function(feature) {
          var color = feature.getProperty('COLOR');
          return /** @type {!google.maps.Data.StyleOptions} */({
            fillColor: color,
            strokeColor: 'black',
            strokeWeight: 2
          });
        });
          

        // a popup with the Health Region name and the score for Sense of Community Belonging
        var infoWindow = new google.maps.InfoWindow({
                    zIndex: 2
            });
        
        
         map.data.addListener('click', function(event) {
                 
            map.data.revertStyle();
            map.data.overrideStyle(event.feature, {strokeWeight: 2, strokeColor: 'black', zIndex: 1});
            
            var CDNAME  = event.feature.getProperty('CDNAME');
            var COLOR   = event.feature.getProperty('COLOR');
            
            infoWindow.setPosition( event.latLng );
            infoWindow.setOptions( {
                pixelOffset: {width: 0, height: -3}
            });
        
            infoWindow.setContent(
                    "CDNAME: <b>" + CDNAME + "</b><br />" + 
                    "COLOR: <b>" + COLOR + "</b>"
            );  
            infoWindow.open(map);
            
         });
         
          
        // Create the search box and link it to the UI element.
        var input = document.getElementById('pac-input');
        var searchBox = new google.maps.places.SearchBox(input);
        map.controls[google.maps.ControlPosition.TOP_LEFT].push(input);

        // Bias the SearchBox results towards current map's viewport.
        map.addListener('bounds_changed', function() {
          searchBox.setBounds(map.getBounds());
        });

        var markers = [];
        // Listen for the event fired when the user selects a prediction and retrieve
        // more details for that place.
        searchBox.addListener('places_changed', function() {
          var places = searchBox.getPlaces();

          if (places.length == 0) {
            return;
          }

          // Clear out the old markers.
          markers.forEach(function(marker) {
            marker.setMap(null);
          });
          markers = [];

          // For each place, get the icon, name and location.
          var bounds = new google.maps.LatLngBounds();
          places.forEach(function(place) {
            if (!place.geometry) {
              console.log("Returned place contains no geometry");
              return;
            }
            var icon = {
              url: 'http://maps.google.com/mapfiles/ms/icons/blue.png',
              size: new google.maps.Size(50, 75),
              origin: new google.maps.Point(0, 0),
              anchor: new google.maps.Point(25, 75)
            };

            // Create a marker for each place.
            markers.push(new google.maps.Marker({
              map: map,
              icon: icon,
              title: place.name,
              position: place.geometry.location,
              animation: google.maps.Animation.DROP
            }));
              
            if (place.geometry.viewport) {
              // Only geocodes have viewport.
              bounds.union(place.geometry.viewport);
            } else {
              bounds.extend(place.geometry.location);
            }
          });
          map.fitBounds(bounds);
        });
      }

      /* Always set the map height explicitly to define the size of the div
       * element that contains the map. */
      #map {
        height: 100%;
      }
      /* Optional: Makes the sample page fill the window. */
      html, body {
        height: 100%;
        margin: 0;
        padding: 0;
      }
      #description {
        font-family: Roboto;
        font-size: 15px;
        font-weight: 300;
      }

      #infowindow-content .title {
        font-weight: bold;
      }

      #infowindow-content {
        display: none;
      }

      #map #infowindow-content {
        display: inline;
      }

      .pac-card {
        margin: 10px 10px 0 0;
        border-radius: 2px 0 0 2px;
        box-sizing: border-box;
        -moz-box-sizing: border-box;
        outline: none;
        box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
        background-color: #fff;
        font-family: Roboto;
      }

      #pac-container {
        padding-bottom: 12px;
        margin-right: 12px;
      }

      .pac-controls {
        display: inline-block;
        padding: 5px 11px;
      }

      .pac-controls label {
        font-family: Roboto;
        font-size: 13px;
        font-weight: 300;
      }

      #pac-input {
        background-color: #fff;
        font-family: Roboto;
        font-size: 15px;
        font-weight: 300;
        margin-left: 12px;
        padding: 0 11px 0 13px;
        text-overflow: ellipsis;
        width: 400px;
      }

      #pac-input:focus {
        border-color: #4d90fe;
      }

      #title {
        color: #fff;
        background-color: #4d90fe;
        font-size: 25px;
        font-weight: 500;
        padding: 6px 12px;
      }
      #target {
        width: 345px;
      }

    <input id="pac-input" class="controls" type="text" placeholder="Search Box">
    <div id="map"></div>
        <script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyCkUOdZ5y7hMm0yrcCQoCvLwzdM6M8s5qk&libraries=places&callback=initAutocomplete"
         async defer></script>

期望的最终解决方案

Answer 1

要使用来自 Infowindow 数据层的数据打开 GeoJSON：

使用 loadGeoJson 回调函数从 GeoJson 中捕获特征数组。

  map.data.loadGeoJson('https://api.npoint.io/a5cec0395277a59090e7', null, function(features) {
    jsonFeatures = features;
  });

当 SearchBox 创建标记时，检查该标记是否包含在 GeoJSON 多边形之一中（使用 geometry.poly.containsLocation 函数）。

  // Create a marker for each place.
  var marker = new google.maps.Marker({
    map: map,
    icon: icon,
    title: place.name,
    position: place.geometry.location,
    animation: google.maps.Animation.DROP
  });
  markers.push(marker);
  for (var i = 0; i < jsonFeatures.length; i++) {
    console.log(jsonFeatures[i].getGeometry().getType());
    if (jsonFeatures[i].getGeometry().getType() == "Polygon") {
      console.log("Polygon");
      var polygon = new google.maps.Polygon({
        paths: jsonFeatures[i].getGeometry().getArray()[0].getArray()
      });
      if (google.maps.geometry.poly.containsLocation(place.geometry.location, polygon)) {
        marker.feature = jsonFeatures[i];
        console.log("polygon[" + i + "] contains " + place.geometry.location.toUrlValue(6));
        // openInfoWindow(place.geometry.location, jsonFeatures[i], marker);
        marker.addListener('click', function(evt) {
          openInfoWindow(place.geometry.location, this.feature, this);
        });
        google.maps.event.trigger(marker, 'click');
      }
    }
  }

使用包含多边形的信息打开信息窗口。

  map.data.addListener('click', function(event) {

    map.data.revertStyle();
    map.data.overrideStyle(event.feature, {
      strokeWeight: 2,
      strokeColor: 'black',
      zIndex: 1
    });
    openInfoWindow(event.latLng, event.feature);
  });

  function openInfoWindow(latLng, feature, marker) {
    var CDNAME = feature.getProperty('CDNAME');
    var COLOR = feature.getProperty('COLOR');
    if (marker == null) {
      infoWindow.setPosition(latLng);
    } else {
      infoWindow.setOptions({
        pixelOffset: null
      });
    }
    infoWindow.setContent(
      "CDNAME: <b>" + CDNAME + "</b><br />" +
      "COLOR: <b>" + COLOR + "</b>"
    );
    infoWindow.open(map, marker);
  }

proof of concept fiddle

代码片段：

// This example adds a search box to a map, using the Google Place Autocomplete
// feature. People can enter geographical searches. The search box will return a
// pick list containing a mix of places and predicted search terms.

// This example requires the Places library. Include the libraries=places
// parameter when you first load the API. For example:
// <script src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&libraries=places">
var jsonFeatures;

function initAutocomplete() {
  var map = new google.maps.Map(document.getElementById('map'), {
    zoom: 5,
    center: {
      lat: 49.656963,
      lng: -112.506664
    },
    mapTypeId: 'roadmap',
    gestureHandling: 'greedy'
  });

  map.data.loadGeoJson('https://api.npoint.io/a5cec0395277a59090e7', null, function(features) {
    jsonFeatures = features;
  });


  // Color each letter gray. Change the color when the isColorful property
  // is set to true.
  map.data.setStyle(function(feature) {
    var color = feature.getProperty('COLOR');
    return /** @type {!google.maps.Data.StyleOptions} */ ({
      fillColor: color,
      strokeColor: 'black',
      strokeWeight: 2
    });
  });


  // a popup with the Health Region name and the score for Sense of Community Belonging
  var infoWindow = new google.maps.InfoWindow({
    zIndex: 2
  });


  map.data.addListener('click', function(event) {

    map.data.revertStyle();
    map.data.overrideStyle(event.feature, {
      strokeWeight: 2,
      strokeColor: 'black',
      zIndex: 1
    });
    openInfoWindow(event.latLng, event.feature);


  });

  function openInfoWindow(latLng, feature, marker) {
    var CDNAME = feature.getProperty('CDNAME');
    var COLOR = feature.getProperty('COLOR');
    if (marker == null) {
      infoWindow.setPosition(latLng);
    } else {
      infoWindow.setOptions({
        pixelOffset: null
      });
    }

    infoWindow.setContent(
      "CDNAME: <b>" + CDNAME + "</b><br />" +
      "COLOR: <b>" + COLOR + "</b>"
    );
    infoWindow.open(map, marker);
  }

  // Create the search box and link it to the UI element.
  var input = document.getElementById('pac-input');
  var searchBox = new google.maps.places.SearchBox(input);
  map.controls[google.maps.ControlPosition.TOP_LEFT].push(input);

  // Bias the SearchBox results towards current map's viewport.
  map.addListener('bounds_changed', function() {
    searchBox.setBounds(map.getBounds());
  });

  var markers = [];
  // Listen for the event fired when the user selects a prediction and retrieve
  // more details for that place.
  searchBox.addListener('places_changed', function() {
    var places = searchBox.getPlaces();

    if (places.length == 0) {
      return;
    }

    // Clear out the old markers.
    markers.forEach(function(marker) {
      marker.setMap(null);
    });
    markers = [];

    // For each place, get the icon, name and location.
    var bounds = new google.maps.LatLngBounds();
    places.forEach(function(place) {
      if (!place.geometry) {
        console.log("Returned place contains no geometry");
        return;
      }
      var icon = {
        url: 'http://maps.google.com/mapfiles/ms/icons/blue.png',
      };

      // Create a marker for each place.
      var marker = new google.maps.Marker({
        map: map,
        icon: icon,
        title: place.name,
        position: place.geometry.location,
        animation: google.maps.Animation.DROP
      });
      markers.push(marker);
      for (var i = 0; i < jsonFeatures.length; i++) {
        console.log(jsonFeatures[i].getGeometry().getType());
        if (jsonFeatures[i].getGeometry().getType() == "Polygon") {
          console.log("Polygon");
          var polygon = new google.maps.Polygon({
            paths: jsonFeatures[i].getGeometry().getArray()[0].getArray()
          });
          if (google.maps.geometry.poly.containsLocation(place.geometry.location, polygon)) {
            marker.feature = jsonFeatures[i];
            console.log("polygon[" + i + "] contains " + place.geometry.location.toUrlValue(6));
            // openInfoWindow(place.geometry.location, jsonFeatures[i], marker);
            marker.addListener('click', function(evt) {
              openInfoWindow(place.geometry.location, this.feature, this);
            });
            google.maps.event.trigger(marker, 'click');
          }
        }
      }
      if (place.geometry.viewport) {
        // Only geocodes have viewport.
        bounds.union(place.geometry.viewport);
      } else {
        bounds.extend(place.geometry.location);
      }
    });
    map.fitBounds(bounds);
  });
}

/* Always set the map height explicitly to define the size of the div
       * element that contains the map. */

#map {
  height: 100%;
}


/* Optional: Makes the sample page fill the window. */

html,
body {
  height: 100%;
  margin: 0;
  padding: 0;
}

#description {
  font-family: Roboto;
  font-size: 15px;
  font-weight: 300;
}

#infowindow-content .title {
  font-weight: bold;
}

#infowindow-content {
  display: none;
}

#map #infowindow-content {
  display: inline;
}

.pac-card {
  margin: 10px 10px 0 0;
  border-radius: 2px 0 0 2px;
  box-sizing: border-box;
  -moz-box-sizing: border-box;
  outline: none;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
  background-color: #fff;
  font-family: Roboto;
}

#pac-container {
  padding-bottom: 12px;
  margin-right: 12px;
}

.pac-controls {
  display: inline-block;
  padding: 5px 11px;
}

.pac-controls label {
  font-family: Roboto;
  font-size: 13px;
  font-weight: 300;
}

#pac-input {
  background-color: #fff;
  font-family: Roboto;
  font-size: 15px;
  font-weight: 300;
  margin-left: 12px;
  padding: 0 11px 0 13px;
  text-overflow: ellipsis;
  width: 400px;
}

#pac-input:focus {
  border-color: #4d90fe;
}

#title {
  color: #fff;
  background-color: #4d90fe;
  font-size: 25px;
  font-weight: 500;
  padding: 6px 12px;
}

#target {
  width: 345px;
}

<input id="pac-input" class="controls" type="text" placeholder="Search Box">
<div id="map"></div>
<script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyCkUOdZ5y7hMm0yrcCQoCvLwzdM6M8s5qk&libraries=places&callback=initAutocomplete" async defer></script>

谷歌地图使搜索标记打开信息窗口

1 个答案: