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February 25, 2016 17:30
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Draggable landmark editor for Google Maps
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| var canvas = document.getElementById('map'); | |
| var center = new google.maps.LatLng(35.792621, 139.806513); | |
| var options = { | |
| zoom: 5, | |
| center: center | |
| }; | |
| var map = new google.maps.Map(canvas, options); | |
| var xhr = new XMLHttpRequest(); | |
| xhr.responseType = 'json'; | |
| xhr.addEventListener('load', function(e) { | |
| var obj = e.currentTarget.response; | |
| console.log(obj); | |
| var markers = obj.map(function(data, index) { | |
| var info = new google.maps.InfoWindow({ | |
| content: data.title | |
| }); | |
| var marker = new google.maps.Marker({ | |
| map: map, | |
| draggable: true, | |
| animation: google.maps.Animation.DROP, | |
| position: new google.maps.LatLng(data.latitude, data.longtitude) | |
| }); | |
| google.maps.event.addListener(marker, 'mouseover', function(e) { | |
| info.open(map, marker); | |
| }); | |
| google.maps.event.addListener(marker, 'mouseout', function(e) { | |
| info.close(); | |
| }); | |
| return marker; | |
| }); | |
| window.addEventListener('keyup', function(e) { | |
| if (e.code != 'Space') return false; | |
| var out = markers.map(function(marker, index) { | |
| return Object.assign({}, obj[index], { | |
| latitude: marker.position.lat(), | |
| longtitude: marker.position.lng() | |
| }); | |
| }); | |
| var anchor = document.createElement('a'); | |
| anchor.download = 'data.json'; | |
| anchor.href = 'data:application/json,' + encodeURIComponent(JSON.stringify(out, ' ', 2)); | |
| var event = new MouseEvent('click', { | |
| 'view': window, | |
| 'bubbles': true, | |
| 'cancelable': true | |
| }); | |
| anchor.dispatchEvent(event); | |
| }); | |
| }); | |
| xhr.open('GET', 'data.json'); | |
| xhr.send(null); |
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| [ | |
| { | |
| "title": "test 1", | |
| "latitude": 35.681382, | |
| "longtitude": 139.766084 | |
| }, | |
| { | |
| "title": "test 2", | |
| "latitude": 34.686316, | |
| "longtitude": 135.519711 | |
| } | |
| ] |
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| <!DOCTYPE html> | |
| <html> | |
| <script src="https://maps.googleapis.com/maps/api/js?key=YOUR_APP_KEY"></script> | |
| <style> | |
| html { | |
| position: relative; | |
| height: 100%; | |
| } | |
| body { | |
| position: relative; | |
| margin: 0; | |
| width: 100%; | |
| height: 100%; | |
| } | |
| #map { | |
| height: 100%; | |
| width: 100%; | |
| height: 100%; | |
| } | |
| .help { | |
| position: fixed; | |
| pointer-events: none; | |
| font-family: sans-serif; | |
| bottom: 1em; | |
| left: 1em; | |
| } | |
| </style> | |
| <body> | |
| <div id="map"></div> | |
| <div class="help">Press space bar to save json</div> | |
| <script src="app.js"></script> | |
| </body> | |
| </html> |
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