7c2a8a0cab
of data up to our last backup. In the previous subversion repository, this was r1694->r1777. I'm sorry to all those of you who might have checked out that code, as this will surely cause problems for you. We're currently working to figure out what went wrong, and how to prevent it in the future. git-svn-id: http://svn.openlayers.org/trunk/openlayers@1695 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
384 lines
11 KiB
JavaScript
384 lines
11 KiB
JavaScript
/* Copyright (c) 2006 MetaCarta, Inc., published under the BSD license.
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* See http://svn.openlayers.org/trunk/openlayers/license.txt for the full
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* text of the license. */
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/**
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* @class
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*
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* @requires OpenLayers/Layer/EventPane.js
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* @requires OpenLayers/Layer/FixedZoomLevels.js
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*/
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OpenLayers.Layer.Google = OpenLayers.Class.create();
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OpenLayers.Layer.Google.prototype =
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OpenLayers.Class.inherit( OpenLayers.Layer.EventPane,
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OpenLayers.Layer.FixedZoomLevels, {
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/** @final @type int */
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MIN_ZOOM_LEVEL: 0,
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/** @final @type int */
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MAX_ZOOM_LEVEL: 17,
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/** Hardcode these resolutions so that they are more closely
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* tied with the standard wms projection
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*
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* @final @type Array(float) */
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RESOLUTIONS: [1.40625,0.703125,0.3515625,0.17578125,0.087890625,0.0439453125,0.02197265625,0.010986328125,0.0054931640625,0.00274658203125,0.001373291015625,0.0006866455078125,0.00034332275390625,0.000171661376953125,0.0000858306884765625,0.00004291534423828125],
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/** @type GMapType */
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type: null,
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/**
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* @constructor
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*
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* @param {String} name
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*/
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initialize: function(name, options) {
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OpenLayers.Layer.EventPane.prototype.initialize.apply(this, arguments);
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OpenLayers.Layer.FixedZoomLevels.prototype.initialize.apply(this,
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arguments);
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this.addContainerPxFunction();
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},
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/** Load the GMap and register appropriate event listeners. If we can't
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* load GMap2, then display a warning message.
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*
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* @private
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*/
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loadMapObject:function() {
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//has gmaps library has been loaded?
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try {
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// create GMap, hide nav controls
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this.mapObject = new GMap2( this.div );
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// move the ToS and branding stuff up to the pane
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// thanks a *mil* Erik for thinking of this
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var poweredBy = this.div.lastChild;
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this.div.removeChild(poweredBy);
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this.pane.appendChild(poweredBy);
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poweredBy.className = "olLayerGooglePoweredBy gmnoprint";
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poweredBy.style.left = "";
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poweredBy.style.bottom = "";
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var termsOfUse = this.div.lastChild;
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this.div.removeChild(termsOfUse);
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this.pane.appendChild(termsOfUse);
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termsOfUse.className = "olLayerGoogleCopyright";
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termsOfUse.style.right = "";
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termsOfUse.style.bottom = "";
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} catch (e) {
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// do not crash
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}
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},
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/** Overridden from EventPane because if a map type has been specified,
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* we need to attach a listener for the first moveend -- this is how
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* we will know that the map has been centered. Only once the map has
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* been centered is it safe to change the gmap object's map type.
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*
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* @param {OpenLayers.Map} map
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*/
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setMap: function(map) {
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OpenLayers.Layer.EventPane.prototype.setMap.apply(this, arguments);
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if (this.type != null) {
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this.map.events.register("moveend", this, this.setMapType);
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}
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},
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/** The map has been centered, and a map type was specified, so we
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* set the map type on the gmap object, then unregister the listener
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* so that we dont keep doing this every time the map moves.
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*
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* @private
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*/
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setMapType: function() {
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if (this.mapObject.getCenter() != null) {
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this.mapObject.setMapType(this.type);
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this.map.events.unregister("moveend", this, this.setMapType);
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}
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},
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/**
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* @param {Event} evt
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*/
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onMapResize: function() {
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this.mapObject.checkResize();
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},
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/**
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* @param {OpenLayers.Bounds} bounds
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*
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* @returns Corresponding zoom level for a specified Bounds.
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* If mapObject is not loaded or not centered, returns null
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* @type int
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*
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getZoomForExtent: function (bounds) {
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var zoom = null;
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if (this.mapObject != null) {
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var moBounds = this.getMapObjectBoundsFromOLBounds(bounds);
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var moZoom = this.getMapObjectZoomFromMapObjectBounds(moBounds);
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//make sure zoom is within bounds
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var moZoom = Math.min(Math.max(moZoom, this.minZoomLevel),
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this.maxZoomLevel);
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zoom = this.getOLZoomFromMapObjectZoom(moZoom);
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}
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return zoom;
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},
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*/
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//
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// TRANSLATION: MapObject Bounds <-> OpenLayers.Bounds
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//
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/**
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* @param {Object} moBounds
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*
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* @returns An OpenLayers.Bounds, translated from the passed-in
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* MapObject Bounds
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* Returns null if null value is passed in
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* @type OpenLayers.Bounds
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*/
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getOLBoundsFromMapObjectBounds: function(moBounds) {
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var olBounds = null;
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if (moBounds != null) {
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var sw = moBounds.getSouthWest();
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var ne = moBounds.getNorthEast();
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olBounds = new OpenLayers.Bounds(sw.lng(),
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sw.lat(),
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ne.lng(),
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ne.lat() );
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}
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return olBounds;
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},
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/**
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* @param {OpenLayers.Bounds} olBounds
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*
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* @returns A MapObject Bounds, translated from olBounds
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* Returns null if null value is passed in
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* @type Object
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*/
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getMapObjectBoundsFromOLBounds: function(olBounds) {
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var moBounds = null;
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if (olBounds != null) {
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var sw = new GLatLng(olBounds.bottom, olBounds.left);
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var ne = new GLatLng(olBounds.top, olBounds.right);
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moBounds = new GLatLngBounds(sw, ne);
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}
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return moBounds;
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},
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/** Hack-on function because GMAPS does not give it to us
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*
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* @param {GLatLng} gLatLng
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*
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* @returns A GPoint specifying gLatLng translated into "Container" coords
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* @type GPoint
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*/
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addContainerPxFunction: function() {
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if (typeof GMap2 != "undefined" && !GMap2.fromLatLngToContainerPixel) {
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GMap2.prototype.fromLatLngToContainerPixel = function(gLatLng) {
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// first we translate into "DivPixel"
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var gPoint = this.fromLatLngToDivPixel(gLatLng);
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// locate the sliding "Div" div
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// it seems like "b" is the main div
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var div = this.b.firstChild.firstChild;
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// adjust by the offset of "Div" and voila!
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gPoint.x += div.offsetLeft;
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gPoint.y += div.offsetTop;
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return gPoint;
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};
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}
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},
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/**
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* @return String with information on why layer is broken, how to get
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* it working.
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* @type String
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*/
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getWarningHTML:function() {
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var html = "";
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html += "The Google Layer was unable to load correctly.<br>";
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html += "<br>";
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html += "To get rid of this message, select a new BaseLayer "
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html += "in the layer switcher in the upper-right corner.<br>";
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html += "<br>";
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html += "Most likely, this is because the Google Maps library";
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html += " script was either not included, or does not contain the";
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html += " correct API key for your site.<br>";
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html += "<br>";
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html += "Developers: For help getting this working correctly, ";
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html += "<a href='http://trac.openlayers.org/wiki/GoogleMapsLayer' "
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html += "target='_blank'>";
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html += "click here";
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html += "</a>";
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return html;
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},
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/************************************
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* *
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* MapObject Interface Controls *
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* *
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************************************/
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// Get&Set Center, Zoom
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/** Set the mapObject to the specified center and zoom
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*
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* @param {Object} center MapObject LonLat format
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* @param {int} zoom MapObject zoom format
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*/
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setMapObjectCenter: function(center, zoom) {
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this.mapObject.setCenter(center, zoom);
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},
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/**
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* @returns the mapObject's current center in Map Object format
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* @type Object
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*/
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getMapObjectCenter: function() {
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return this.mapObject.getCenter();
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},
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/**
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* @returns the mapObject's current zoom, in Map Object format
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* @type int
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*/
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getMapObjectZoom: function() {
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return this.mapObject.getZoom();
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},
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// LonLat - Pixel Translation
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/**
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* @param {Object} moPixel MapObject Pixel format
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*
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* @returns MapObject LonLat translated from MapObject Pixel
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* @type Object
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*/
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getMapObjectLonLatFromMapObjectPixel: function(moPixel) {
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return this.mapObject.fromContainerPixelToLatLng(moPixel);
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},
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/**
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* @param {Object} moPixel MapObject Pixel format
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*
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* @returns MapObject Pixel translated from MapObject LonLat
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* @type Object
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*/
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getMapObjectPixelFromMapObjectLonLat: function(moLonLat) {
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return this.mapObject.fromLatLngToContainerPixel(moLonLat);
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},
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// Bounds
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/**
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* @param {Object} moBounds MapObject Bounds format
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*
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* @returns MapObject Zoom for specified MapObject Bounds
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* @type Object
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*/
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getMapObjectZoomFromMapObjectBounds: function(moBounds) {
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return this.mapObject.getBoundsZoomLevel(moBounds);
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},
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/************************************
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* *
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* MapObject Primitives *
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* *
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************************************/
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// LonLat
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/**
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* @param {Object} moLonLat MapObject LonLat format
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*
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* @returns Longitude of the given MapObject LonLat
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* @type float
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*/
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getLongitudeFromMapObjectLonLat: function(moLonLat) {
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return moLonLat.lng();
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},
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/**
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* @param {Object} moLonLat MapObject LonLat format
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*
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* @returns Latitude of the given MapObject LonLat
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* @type float
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*/
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getLatitudeFromMapObjectLonLat: function(moLonLat) {
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return moLonLat.lat();
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},
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/**
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* @param {int} lon float
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* @param {int} lat float
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*
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* @returns MapObject LonLat built from lon and lat params
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* @type Object
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*/
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getMapObjectLonLatFromLonLat: function(lon, lat) {
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return new GLatLng(lat, lon);
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},
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// Pixel
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/**
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* @param {Object} moPixel MapObject Pixel format
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*
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* @returns X value of the MapObject Pixel
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* @type int
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*/
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getXFromMapObjectPixel: function(moPixel) {
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return moPixel.x;
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},
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/**
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* @param {Object} moPixel MapObject Pixel format
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*
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* @returns Y value of the MapObject Pixel
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* @type int
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*/
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getYFromMapObjectPixel: function(moPixel) {
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return moPixel.y;
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},
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/**
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* @param {int} x
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* @param {int} y
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*
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* @returns MapObject Pixel from x and y parameters
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* @type Object
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*/
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getMapObjectPixelFromXY: function(x, y) {
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return new GPoint(x, y);
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},
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/** @final @type String */
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CLASS_NAME: "OpenLayers.Layer.Google"
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});
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