javascriptgoogle-mapsautocompletegoogle-places-autocomplete
Google maps fit location to screen with different bounds
Firstly, I have been checking all over the web but I couldnt find an answer.
I combined autocomplete with goole maps and if a user wants, he/she can move the marker as well and I get address from it. You can find the code below.
When a user searches for instance Nice, France, is it possible to fit Nice from e.g borders to my map? Maybe I have to change the zoom dynamically or I need to set new viewport, I am not sure. So far what I found is, I can give a distance and create a circle to fit that circle to the viewport. But circle's radius is set, so it can fit to Nice but can not fit to Miami.
Hope I could explain what I mean. Thank you in advance.
<!DOCTYPE html>
<html>
<head>
<title></title>
<style>
#map_canvas {
width: 980px;
height: 500px;
}
#current {
padding-top: 5px;
}
</style>
</head>
<body>
<label>Enter address:</label><br>
<input id="searchTextField" type="text" size="50" style="margin-bottom: 20px;">
<section>
<div id='map_canvas' style=""></div>
<div id="current">No info...</div>
</section>
<div style="margin-top: 10px;" id="data_area">
</div>
<script>
function initMap() {
var map = new google.maps.Map(document.getElementById('map_canvas'), {
zoom: 10,
center: new google.maps.LatLng(41.0082, 28.9784),
mapTypeId: google.maps.MapTypeId.ROADMAP
});
var myMarker = new google.maps.Marker({
position: new google.maps.LatLng(41.0082, 28.9784),
draggable: true
});
var geocoder = new google.maps.Geocoder;
var markers = [];
markers.push(myMarker);
var input = document.getElementById('searchTextField');
var autocomplete = new google.maps.places.Autocomplete(input);
map.addListener('idle', function() {
console.log(map.getBounds());
var bounds = map.getBounds();
var ne = bounds.getNorthEast();
var sw = bounds.getSouthWest();
});
google.maps.event.addListener(autocomplete, 'place_changed', function () {
for (var i = 0; i < markers.length; i++) {
markers[i].setMap(null);
}
markers = [];
var place = autocomplete.getPlace();
var myMarker = new google.maps.Marker({
position: new google.maps.LatLng(place.geometry.location.lat(), place.geometry.location.lng()),
draggable: true
});
markers.push(myMarker);
map.setCenter(myMarker.position);
myMarker.setMap(map);
google.maps.event.clearListeners(myMarker, 'dragend');
google.maps.event.clearListeners(myMarker, 'dragstart');
drag(myMarker, geocoder, map);
});
drag(myMarker, geocoder, map);
map.setCenter(myMarker.position);
myMarker.setMap(map);
}
function drag(myMarker, geocoder, map) {
geocodeLatLng(geocoder, map, myMarker.getPosition().lat(), myMarker.getPosition().lng());
google.maps.event.addListener(myMarker, 'dragend', function (evt) {
document.getElementById('current').innerHTML = '<p>Lat: ' + evt.latLng.lat().toFixed(3) + ' Lng: ' + evt.latLng.lng().toFixed(3) + '</p>';
geocodeLatLng(geocoder, map, evt.latLng.lat(), evt.latLng.lng());
});
google.maps.event.addListener(myMarker, 'dragstart', function (evt) {
document.getElementById('current').innerHTML = '<p>Waiting...</p>';
});
}
function geocodeLatLng(geocoder, map, lat, lng) {
var input = lat + "," + lng;
var latlngStr = input.split(',', 2);
var latlng = {lat: parseFloat(latlngStr[0]), lng: parseFloat(latlngStr[1])};
geocoder.geocode({'location': latlng}, function(results, status) {
if (status === 'OK') {
if (results[0]) {
console.log(results[0])
var data_arr = []
document.getElementById("data_area").innerHTML = "";
var data_country = results[0].address_components.find(function(element) {
return element.types[0] == "country";
});
var data_administrative_1 = results[0].address_components.find(function(element) {
return element.types[0] == "administrative_area_level_1";
});
var data_administrative_2 = results[0].address_components.find(function(element) {
return element.types[0] == "administrative_area_level_2";
});
var data_administrative_3 = results[0].address_components.find(function(element) {
return element.types[0] == "administrative_area_level_3";
});
var data_administrative_4 = results[0].address_components.find(function(element) {
return element.types[0] == "administrative_area_level_4";
});
var data_route = results[0].address_components.find(function(element) {
return element.types[0] == "route";
});
if (data_route !== undefined) {data_arr.push(data_route["long_name"]);}
if (data_administrative_4 !== undefined) {data_arr.push(data_administrative_4["long_name"]);}
if (data_administrative_3 !== undefined) {data_arr.push(data_administrative_3["long_name"]);}
if (data_administrative_2 !== undefined) {data_arr.push(data_administrative_2["long_name"]);}
if (data_administrative_1 !== undefined) {data_arr.push(data_administrative_1["long_name"]);}
if (data_country !== undefined) {data_arr.push(data_country["long_name"]);}
data_arr.forEach(function(data) {
var node = document.createElement("LI");
var textnode = document.createTextNode(data);
node.appendChild(textnode);
document.getElementById("data_area").appendChild(node);
});
} else {
window.alert('No data!');
}
} else {
window.alert('Geocoder failed: ' + status);
}
});
}
</script>
<script async defer src="https://maps.googleapis.com/maps/api/js?libraries=places&key=MY_API_KEY&callback=initMap"></script>
</body>
</html>
Solution
The Autocomplete service returns the geometry of the location selected, zoom the map to show those bounds (in the fiddle/snippet I added a rectangle to show the bounds returned, if you don't want that displayed, remove it):
var place = autocomplete.getPlace();
if (place.geometry.viewport) {
map.fitBounds(place.geometry.viewport);
} else if (place.geometry.bounds) {
map.fitBounds(place.geometry.bounds);
}
html,
body {
height: 100%;
width: 100%;
padding: 0px;
margin: 0px;
}
#map_canvas {
width: 100%;
height: 80%;
}
#current {
padding-top: 5px;
}<label>Enter address:</label><br>
<input id="searchTextField" type="text" size="50" style="margin-bottom: 20px;">
<section style="width: 100%; height:100%;">
<div id='map_canvas' style=""></div>
<div id="current">No info...</div>
</section>
<div style="margin-top: 10px;" id="data_area"></div>
<script>
var rect;
var map;
function initMap() {
map = new google.maps.Map(document.getElementById('map_canvas'), {
zoom: 10,
center: new google.maps.LatLng(41.0082, 28.9784),
mapTypeId: google.maps.MapTypeId.ROADMAP
});
var myMarker = new google.maps.Marker({
position: new google.maps.LatLng(41.0082, 28.9784),
draggable: true
});
var geocoder = new google.maps.Geocoder;
var markers = [];
markers.push(myMarker);
var input = document.getElementById('searchTextField');
var autocomplete = new google.maps.places.Autocomplete(input);
map.addListener('idle', function() {
console.log(map.getBounds());
var bounds = map.getBounds();
var ne = bounds.getNorthEast();
var sw = bounds.getSouthWest();
});
google.maps.event.addListener(autocomplete, 'place_changed', function() {
for (var i = 0; i < markers.length; i++) {
markers[i].setMap(null);
}
markers = [];
var place = autocomplete.getPlace();
if (place.geometry.viewport) {
map.fitBounds(place.geometry.viewport);
if (rect && rect.setMap) rect.setMap(null);
rect = new google.maps.Rectangle({
map: map,
bounds: place.geometry.viewport
})
} else if (place.geometry.bounds) {
map.fitBounds(place.geometry.bounds);
if (rect && rect.setMap) rect.setMap(null);
rect = new google.maps.Rectangle({
map: map,
bounds: place.geometry.bounds
})
}
var myMarker = new google.maps.Marker({
position: new google.maps.LatLng(place.geometry.location.lat(), place.geometry.location.lng()),
draggable: true
});
markers.push(myMarker);
map.setCenter(myMarker.position);
myMarker.setMap(map);
google.maps.event.clearListeners(myMarker, 'dragend');
google.maps.event.clearListeners(myMarker, 'dragstart');
drag(myMarker, geocoder, map);
});
drag(myMarker, geocoder, map);
map.setCenter(myMarker.position);
myMarker.setMap(map);
}
function drag(myMarker, geocoder, map) {
geocodeLatLng(geocoder, map, myMarker.getPosition().lat(), myMarker.getPosition().lng());
google.maps.event.addListener(myMarker, 'dragend', function(evt) {
document.getElementById('current').innerHTML = '<p>Lat: ' + evt.latLng.lat().toFixed(3) + ' Lng: ' + evt.latLng.lng().toFixed(3) + '</p>';
geocodeLatLng(geocoder, map, evt.latLng.lat(), evt.latLng.lng());
});
google.maps.event.addListener(myMarker, 'dragstart', function(evt) {
document.getElementById('current').innerHTML = '<p>Waiting...</p>';
});
}
function geocodeLatLng(geocoder, map, lat, lng) {
var input = lat + "," + lng;
var latlngStr = input.split(',', 2);
var latlng = {
lat: parseFloat(latlngStr[0]),
lng: parseFloat(latlngStr[1])
};
geocoder.geocode({
'location': latlng
}, function(results, status) {
if (status === 'OK') {
if (results[0]) {
console.log(results[0])
var data_arr = []
document.getElementById("data_area").innerHTML = "";
var data_country = results[0].address_components.find(function(element) {
return element.types[0] == "country";
});
var data_administrative_1 = results[0].address_components.find(function(element) {
return element.types[0] == "administrative_area_level_1";
});
var data_administrative_2 = results[0].address_components.find(function(element) {
return element.types[0] == "administrative_area_level_2";
});
var data_administrative_3 = results[0].address_components.find(function(element) {
return element.types[0] == "administrative_area_level_3";
});
var data_administrative_4 = results[0].address_components.find(function(element) {
return element.types[0] == "administrative_area_level_4";
});
var data_route = results[0].address_components.find(function(element) {
return element.types[0] == "route";
});
if (data_route !== undefined) {
data_arr.push(data_route["long_name"]);
}
if (data_administrative_4 !== undefined) {
data_arr.push(data_administrative_4["long_name"]);
}
if (data_administrative_3 !== undefined) {
data_arr.push(data_administrative_3["long_name"]);
}
if (data_administrative_2 !== undefined) {
data_arr.push(data_administrative_2["long_name"]);
}
if (data_administrative_1 !== undefined) {
data_arr.push(data_administrative_1["long_name"]);
}
if (data_country !== undefined) {
data_arr.push(data_country["long_name"]);
}
data_arr.forEach(function(data) {
var node = document.createElement("LI");
var textnode = document.createTextNode(data);
node.appendChild(textnode);
document.getElementById("data_area").appendChild(node);
});
} else {
window.alert('No data!');
}
} else {
window.alert('Geocoder failed: ' + status);
}
});
}
</script>
<script async defer src="https://maps.googleapis.com/maps/api/js?libraries=places&key=AIzaSyCkUOdZ5y7hMm0yrcCQoCvLwzdM6M8s5qk&callback=initMap"></script>- Ways to extend Array object in javascript
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