How to add padding layers for position absolute boxes to Google Maps
A Pen by Emanuele Tessore on CodePen.
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August 29, 2015 14:07
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A Pen by Emanuele Tessore.
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| <div id="map-test" class="map-test"> | |
| <div id="overlay-top" class="overlay top">Some top here!</div> | |
| <div id="overlay-right" class="overlay right">Some right here!</div> | |
| <div id="overlay-bottom" class="overlay bottom">Some bottom here!</div> | |
| <div id="overlay-left" class="overlay left">Some left here!</div> | |
| <div id="map-canvas" class="map-canvas"></div> | |
| </div> |
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| // used globals | |
| //window.map; | |
| //window.styledMap; | |
| //window.infowindow; | |
| //window.bounds; | |
| //window.overlay; | |
| window.markers = [{ | |
| "title": "Marker Title", | |
| "point": {"lat": 46.255762928292, "lng": 10.504977026953}, | |
| "content": "Box Content Here!" | |
| }]; | |
| function initialize() { | |
| window.bounds = new google.maps.LatLngBounds(); | |
| window.overlay = new google.maps.OverlayView(); | |
| // this is required by Google APIs but useless for our intents | |
| window.overlay.draw = function () { | |
| }; | |
| var myOptions = { | |
| zoom: 10, | |
| center: new google.maps.LatLng(window.markers[0].point.lat, window.markers[0].point.lng), | |
| mapTypeId: google.maps.MapTypeId.ROADMAP, | |
| mapTypeControl: false, | |
| streetViewControl: false, | |
| scrollwheel: false | |
| }; | |
| window.map = new google.maps.Map(document.getElementById('map-canvas'), myOptions); | |
| var styles = []; | |
| styles.push({ | |
| featureType: "poi.business", | |
| elementType: "labels", | |
| stylers: [ | |
| {visibility: "off"} | |
| ] | |
| }); | |
| window.styledMap = new google.maps.StyledMapType(styles, {name: "Styled Map"}); | |
| window.map.mapTypes.set('map_style', window.styledMap); | |
| window.map.setMapTypeId('map_style'); | |
| window.infowindow = new google.maps.InfoWindow({ | |
| content: 'Placeholder' | |
| }); | |
| var setPopupContent = function(){ | |
| window.infowindow.setContent(this.html); | |
| window.infowindow.open(window.map, this); | |
| }; | |
| for (var i = 0; i < window.markers.length; i++) { | |
| var position = new google.maps.LatLng(window.markers[i].point.lat, window.markers[i].point.lng); | |
| var marker = new google.maps.Marker({ | |
| position: position, | |
| map: window.map, | |
| title: window.markers[i].title, | |
| html: window.markers[i].content | |
| }); | |
| bounds.extend(position); | |
| google.maps.event.addListener(marker, 'click', setPopupContent); | |
| } | |
| overlay.setMap(window.map); | |
| var paddings = { | |
| top: parseInt(document.getElementById('overlay-top').clientHeight), | |
| right: parseInt(document.getElementById('overlay-right').clientWidth), | |
| bottom: parseInt(document.getElementById('overlay-bottom').clientHeight), | |
| left: parseInt(document.getElementById('overlay-left').clientWidth) | |
| }; | |
| google.maps.event.addListenerOnce(map, 'idle', function () { | |
| mapEnforcePaddings(window.map, window.overlay, window.markers, paddings); | |
| }); | |
| google.maps.event.addListener(map, 'resize', function () { | |
| mapEnforcePaddings(window.map, window.overlay, window.markers, paddings); | |
| }); | |
| } | |
| var mapEnforcePaddings = function (map, overlay, markers, paddings) { | |
| if (typeof(paddings.top) == 'undefined') paddings.top = 0; | |
| if (typeof(paddings.right) == 'undefined') paddings.right = 0; | |
| if (typeof(paddings.bottom) == 'undefined') paddings.bottom = 0; | |
| if (typeof(paddings.left) == 'undefined') paddings.left = 0; | |
| var projection = overlay.getProjection(); | |
| var bounds = new google.maps.LatLngBounds(map.getBounds().getSouthWest(), map.getBounds().getNorthEast()); | |
| for (var i = 0; i < markers.length; i++) { | |
| var markerLatLng = new google.maps.LatLng(markers[i].point.lat, markers[i].point.lng); | |
| var markerPixelCoordinates = projection.fromLatLngToDivPixel(markerLatLng); | |
| bounds.extend( | |
| projection.fromDivPixelToLatLng({ | |
| x: markerPixelCoordinates.x - paddings.left, | |
| y: markerPixelCoordinates.y - paddings.top | |
| }) | |
| ); | |
| bounds.extend( | |
| projection.fromDivPixelToLatLng({ | |
| x: markerPixelCoordinates.x + paddings.right, | |
| y: markerPixelCoordinates.y + paddings.bottom | |
| }) | |
| ); | |
| } | |
| map.fitBounds(bounds); | |
| map.panBy( | |
| (paddings.right - paddings.left) / 2, | |
| (paddings.bottom - paddings.top) / 2 | |
| ); | |
| }; | |
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| .map-test { | |
| /* just arbitrary dimensions */ | |
| height: 480px; | |
| width: 640px; | |
| background: #ccc; | |
| position: relative; | |
| } | |
| .overlay { | |
| line-height: 1.4; | |
| font-size: 16px; | |
| text-align: center; | |
| background: #333; | |
| background: rgba(0, 0, 0, .2); | |
| position: absolute; | |
| z-index: 500; | |
| width: 100%; | |
| height: 100%; | |
| } | |
| .top { | |
| top: 0; | |
| left: 0; | |
| height: 160px; | |
| z-index: 600; | |
| } | |
| .right { | |
| background: #0c0; | |
| background: rgba(0, 200, 0, .2); | |
| top: 0; | |
| right: 0; | |
| width: 240px; | |
| z-index: 700; | |
| } | |
| .bottom { | |
| background: #00c; | |
| background: rgba(0, 0, 200, .2); | |
| bottom: 0; | |
| left: 0; | |
| height: 60px; | |
| z-index: 800; | |
| } | |
| .left { | |
| background: #c00; | |
| background: rgba(200, 0, 0, .2); | |
| top: 0; | |
| left: 0; | |
| width: 80px; | |
| z-index: 900; | |
| } | |
| .map-canvas { | |
| min-height: 300px; | |
| width: 100%; | |
| height: 100%; | |
| } |
A Pen by Emanuele Tessore on CodePen.
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