Added support for Google road map with traffic layer by @d-m-wilson

iitc-project/ingress-intel-total-conversion#1070
#2

code/boot.js

@@ -142,6 +142,7 @@ function createDefaultBaseMapLayers() {
   };
   baseLayers['Google Default Ingress Map'] = new L.Google('ROADMAP',{maxZoom:21, mapOptions:ingressGMapOptions});
   baseLayers['Google Roads'] = new L.Google('ROADMAP',{maxZoom:21});
+  baseLayers['Google Roads + Traffic'] = new L.GoogleTraffic('ROADMAP',{maxZoom:21});
   baseLayers['Google Satellite'] = new L.Google('SATELLITE',{maxZoom:21});
   baseLayers['Google Hybrid'] = new L.Google('HYBRID',{maxZoom:21});
   baseLayers['Google Terrain'] = new L.Google('TERRAIN',{maxZoom:15});
@@ -705,6 +706,7 @@ try { console.log('Loading included JS now'); } catch(e) {}
 // modified version of https://github.com/shramov/leaflet-plugins. Also
 // contains the default Ingress map style.
 @@INCLUDERAW:external/Google.js@@
+@@INCLUDERAW:external/GoogleTraffic.js@@
 @@INCLUDERAW:external/autolink.js@@
 @@INCLUDERAW:external/oms.min.js@@
 

external/GoogleTraffic.js

@@ -0,0 +1,204 @@
+/*
+ * Google layer using Google Maps API
+ * Source: https://github.com/qtrandev/LeafletTransit
+ * Author: Quyen Tran https://github.com/qtrandev
+ * License: https://github.com/codeforamerica/ceviche-cms/blob/master/LICENCE.md
+ */
+
+/* global google: true */
+
+L.GoogleTraffic = L.Class.extend({
+	includes: L.Mixin.Events,
+
+	options: {
+		minZoom: 0,
+		maxZoom: 18,
+		tileSize: 256,
+		subdomains: 'abc',
+		errorTileUrl: '',
+		attribution: '',
+		opacity: 1,
+		continuousWorld: false,
+		noWrap: false,
+		mapOptions: {
+			backgroundColor: '#dddddd'
+		}
+	},
+
+	// Possible types: SATELLITE, ROADMAP, HYBRID, TERRAIN
+	initialize: function(type, options) {
+		L.Util.setOptions(this, options);
+
+		this._ready = google.maps.Map !== undefined;
+		if (!this._ready) L.GoogleTraffic.asyncWait.push(this);
+
+		this._type = type || 'ROADMAP';
+	},
+
+	onAdd: function(map, insertAtTheBottom) {
+		this._map = map;
+		this._insertAtTheBottom = insertAtTheBottom;
+
+		// create a container div for tiles
+		this._initContainer();
+		this._initMapObject();
+
+		// set up events
+		map.on('viewreset', this._resetCallback, this);
+
+		this._limitedUpdate = L.Util.limitExecByInterval(this._update, 150, this);
+		map.on('move', this._update, this);
+
+		map.on('zoomanim', this._handleZoomAnim, this);
+
+		//20px instead of 1em to avoid a slight overlap with google's attribution
+		map._controlCorners.bottomright.style.marginBottom = '20px';
+
+		this._reset();
+		this._update();
+	},
+
+	onRemove: function(map) {
+		map._container.removeChild(this._container);
+
+		map.off('viewreset', this._resetCallback, this);
+
+		map.off('move', this._update, this);
+
+		map.off('zoomanim', this._handleZoomAnim, this);
+
+		map._controlCorners.bottomright.style.marginBottom = '0em';
+	},
+
+	getAttribution: function() {
+		return this.options.attribution;
+	},
+
+	setOpacity: function(opacity) {
+		this.options.opacity = opacity;
+		if (opacity < 1) {
+			L.DomUtil.setOpacity(this._container, opacity);
+		}
+	},
+
+	setElementSize: function(e, size) {
+		e.style.width = size.x + 'px';
+		e.style.height = size.y + 'px';
+	},
+
+	_initContainer: function() {
+		var tilePane = this._map._container,
+			first = tilePane.firstChild;
+
+		if (!this._container) {
+			this._container = L.DomUtil.create('div', 'leaflet-google-layer leaflet-top leaflet-left');
+			this._container.id = '_GMapContainer_' + L.Util.stamp(this);
+			this._container.style.zIndex = 'auto';
+		}
+
+		tilePane.insertBefore(this._container, first);
+
+		this.setOpacity(this.options.opacity);
+		this.setElementSize(this._container, this._map.getSize());
+	},
+
+	_initMapObject: function() {
+		if (!this._ready) return;
+		this._google_center = new google.maps.LatLng(0, 0);
+		var map = new google.maps.Map(this._container, {
+			center: this._google_center,
+			zoom: 0,
+			tilt: 0,
+			mapTypeId: google.maps.MapTypeId[this._type],
+			disableDefaultUI: true,
+			keyboardShortcuts: false,
+			draggable: false,
+			disableDoubleClickZoom: true,
+			scrollwheel: false,
+			streetViewControl: false,
+			styles: this.options.mapOptions.styles,
+			backgroundColor: this.options.mapOptions.backgroundColor
+		});
+		var trafficLayer = new google.maps.TrafficLayer();
+		trafficLayer.setMap(map);
+
+		var _this = this;
+		this._reposition = google.maps.event.addListenerOnce(map, 'center_changed',
+			function() { _this.onReposition(); });
+		this._google = map;
+
+		google.maps.event.addListenerOnce(map, 'idle',
+			function() { _this._checkZoomLevels(); });
+		//Reporting that map-object was initialized.
+		this.fire('MapObjectInitialized', { mapObject: map });
+	},
+
+	_checkZoomLevels: function() {
+		//setting the zoom level on the Google map may result in a different zoom level than the one requested
+		//(it won't go beyond the level for which they have data).
+		// verify and make sure the zoom levels on both Leaflet and Google maps are consistent
+		if (this._google.getZoom() !== this._map.getZoom()) {
+			//zoom levels are out of sync. Set the leaflet zoom level to match the google one
+			this._map.setZoom( this._google.getZoom() );
+		}
+	},
+
+	_resetCallback: function(e) {
+		this._reset(e.hard);
+	},
+
+	_reset: function(clearOldContainer) {
+		this._initContainer();
+	},
+
+	_update: function(e) {
+		if (!this._google) return;
+		this._resize();
+
+		var center = this._map.getCenter();
+		var _center = new google.maps.LatLng(center.lat, center.lng);
+
+		this._google.setCenter(_center);
+		this._google.setZoom(Math.round(this._map.getZoom()));
+
+		this._checkZoomLevels();
+	},
+
+	_resize: function() {
+		var size = this._map.getSize();
+		if (this._container.style.width === size.x &&
+				this._container.style.height === size.y)
+			return;
+		this.setElementSize(this._container, size);
+		this.onReposition();
+	},
+
+
+	_handleZoomAnim: function (e) {
+		var center = e.center;
+		var _center = new google.maps.LatLng(center.lat, center.lng);
+
+		this._google.setCenter(_center);
+		this._google.setZoom(Math.round(e.zoom));
+	},
+
+
+	onReposition: function() {
+		if (!this._google) return;
+		google.maps.event.trigger(this._google, 'resize');
+	}
+});
+
+L.GoogleTraffic.asyncWait = [];
+L.GoogleTraffic.asyncInitialize = function() {
+	var i;
+	for (i = 0; i < L.GoogleTraffic.asyncWait.length; i++) {
+		var o = L.GoogleTraffic.asyncWait[i];
+		o._ready = true;
+		if (o._container) {
+			o._initMapObject();
+			o._update();
+		}
+	}
+	L.GoogleTraffic.asyncWait = [];
+};