408a7aee84
API changes have made working with the Yahoo! API more painful (more errors) but have also made available a function to change that, which we now use. (Pullup #1052) git-svn-id: http://svn.openlayers.org/trunk/openlayers@4793 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
410 lines
11 KiB
JavaScript
410 lines
11 KiB
JavaScript
/* Copyright (c) 2006-2007 MetaCarta, Inc., published under a modified BSD license.
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* See http://svn.openlayers.org/trunk/openlayers/repository-license.txt
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* for the full text of the license. */
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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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* Class: OpenLayers.Layer.Yahoo
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*
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* Inherits from:
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* - <OpenLayers.Layer.EventPane>
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* - <OpenLayers.Layer.FixedZoomLevels>
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*/
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OpenLayers.Layer.Yahoo = OpenLayers.Class(
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OpenLayers.Layer.EventPane, OpenLayers.Layer.FixedZoomLevels, {
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/**
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* Constant: MIN_ZOOM_LEVEL
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* {Integer} 0
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*/
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MIN_ZOOM_LEVEL: 0,
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/**
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* Constant: MAX_ZOOM_LEVEL
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* {Integer} 15
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*/
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MAX_ZOOM_LEVEL: 15,
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/**
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* Constant: RESOLUTIONS
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* {Array(Float)} 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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RESOLUTIONS: [
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1.40625,
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0.703125,
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0.3515625,
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0.17578125,
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0.087890625,
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0.0439453125,
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0.02197265625,
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0.010986328125,
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0.0054931640625,
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0.00274658203125,
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0.001373291015625,
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0.0006866455078125,
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0.00034332275390625,
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0.000171661376953125,
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0.0000858306884765625,
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0.00004291534423828125
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],
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/**
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* APIProperty: type
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* {YahooMapType}
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*/
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type: null,
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/**
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* APIProperty: sphericalMercator
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* {Boolean} Should the map act as a mercator-projected map? This will
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* cause all interactions with the map to be in the actual map projection,
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* which allows support for vector drawing, overlaying other maps, etc.
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*/
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sphericalMercator: false,
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/**
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* Constructor: OpenLayers.Layer.Yahoo
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*
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* Parameters:
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* name - {String}
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* options - {Object}
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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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if(this.sphericalMercator) {
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OpenLayers.Util.extend(this, OpenLayers.Layer.SphericalMercator);
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this.initMercatorParameters();
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}
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},
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/**
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* Method: loadMapObject
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*/
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loadMapObject:function() {
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try { //do not crash!
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var size = this.getMapObjectSizeFromOLSize(this.map.getSize());
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this.mapObject = new YMap(this.div, this.type, size);
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this.mapObject.disableKeyControls();
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this.mapObject.disableDragMap();
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} catch(e) {}
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},
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/**
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* Method: onMapResize
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*
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*/
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onMapResize: function() {
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try {
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var size = this.getMapObjectSizeFromOLSize(this.map.getSize());
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this.mapObject.resizeTo(size);
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} catch(e) {}
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},
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/**
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* APIMethod: setMap
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* Overridden from EventPane because we need to remove this yahoo event
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* pane which prohibits our drag and drop, and we can only do this
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* once the map has been loaded and centered.
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*
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* Parameters:
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* map - {<OpenLayers.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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this.map.events.register("moveend", this, this.fixYahooEventPane);
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},
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/**
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* Method: fixYahooEventPane
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* The map has been centered, so the mysterious yahoo eventpane has been
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* added. we remove it so that it doesnt mess with *our* event pane.
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*/
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fixYahooEventPane: function() {
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var yahooEventPane = OpenLayers.Util.getElement("ygddfdiv");
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if (yahooEventPane != null) {
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if (yahooEventPane.parentNode != null)
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yahooEventPane.parentNode.removeChild(yahooEventPane);
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this.map.events.unregister("moveend", this,
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this.fixYahooEventPane);
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}
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},
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/**
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* APIMethod: getWarningHTML
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*
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* Returns:
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* {String} String with information on why layer is broken, how to get
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* it working.
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*/
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getWarningHTML:function() {
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var html = "";
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html += "The Yahoo 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 Yahoo library";
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html += " script was either not correctly included.<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/Yahoo' "
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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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/* Translation Functions */
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/* */
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/* The following functions translate GMaps and OL */
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/* formats for Pixel, LonLat, Bounds, and Zoom */
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/* */
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/********************************************************/
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//
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// TRANSLATION: MapObject Zoom <-> OpenLayers Zoom
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//
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/**
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* APIMethod: getOLZoomFromMapObjectZoom
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*
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* Parameters:
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* gZoom - {Integer}
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*
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* Returns:
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* {Integer} An OpenLayers Zoom level, translated from the passed in gZoom
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* Returns null if null value is passed in.
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*/
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getOLZoomFromMapObjectZoom: function(moZoom) {
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var zoom = null;
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if (moZoom != null) {
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zoom = OpenLayers.Layer.FixedZoomLevels.prototype.getOLZoomFromMapObjectZoom.apply(this, [moZoom]);
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zoom = 18 - zoom;
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}
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return zoom;
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},
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/**
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* APIMethod: getMapObjectZoomFromOLZoom
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*
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* Parameters:
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* olZoom - {Integer}
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*
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* Returns:
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* {Integer} A MapObject level, translated from the passed in olZoom
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* Returns null if null value is passed in
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*/
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getMapObjectZoomFromOLZoom: function(olZoom) {
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var zoom = null;
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if (olZoom != null) {
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zoom = OpenLayers.Layer.FixedZoomLevels.prototype.getMapObjectZoomFromOLZoom.apply(this, [olZoom]);
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zoom = 18 - zoom;
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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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* MapObject Interface Controls *
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* *
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************************************/
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// Get&Set Center, Zoom
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/**
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* APIMethod: setMapObjectCenter
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* Set the mapObject to the specified center and zoom
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*
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* Parameters:
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* center - {Object} MapObject LonLat format
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* zoom - {int} MapObject zoom format
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*/
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setMapObjectCenter: function(center, zoom) {
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this.mapObject.drawZoomAndCenter(center, zoom);
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},
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/**
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* APIMethod: getMapObjectCenter
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*
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* Returns:
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* {Object} The mapObject's current center in Map Object format
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*/
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getMapObjectCenter: function() {
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return this.mapObject.getCenterLatLon();
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},
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/**
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* APIMethod: getMapObjectZoom
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*
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* Returns:
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* {Integer} The mapObject's current zoom, in Map Object format
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*/
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getMapObjectZoom: function() {
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return this.mapObject.getZoomLevel();
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},
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// LonLat - Pixel Translation
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/**
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* APIMethod: getMapObjectLonLatFromMapObjectPixel
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*
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* Parameters:
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* moPixel - {Object} MapObject Pixel format
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*
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* Returns:
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* {Object} MapObject LonLat translated from MapObject Pixel
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*/
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getMapObjectLonLatFromMapObjectPixel: function(moPixel) {
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return this.mapObject.convertXYLatLon(moPixel);
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},
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/**
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* APIMethod: getMapObjectPixelFromMapObjectLonLat
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*
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* Parameters:
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* moLonLat - {Object} MapObject LonLat format
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*
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* Returns:
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* {Object} MapObject Pixel transtlated from MapObject LonLat
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*/
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getMapObjectPixelFromMapObjectLonLat: function(moLonLat) {
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return this.mapObject.convertLatLonXY(moLonLat);
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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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* APIMethod: getLongitudeFromMapObjectLonLat
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*
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* Parameters:
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* moLonLat - {Object} MapObject LonLat format
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*
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* Returns:
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* {Float} Longitude of the given MapObject LonLat
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*/
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getLongitudeFromMapObjectLonLat: function(moLonLat) {
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return this.sphericalMercator ?
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this.forwardMercator(moLonLat.Lon, moLonLat.Lat).lon :
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moLonLat.Lon;
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},
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/**
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* APIMethod: getLatitudeFromMapObjectLonLat
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*
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* Parameters:
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* moLonLat - {Object} MapObject LonLat format
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*
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* Returns:
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* {Float} Latitude of the given MapObject LonLat
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*/
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getLatitudeFromMapObjectLonLat: function(moLonLat) {
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return this.sphericalMercator ?
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this.forwardMercator(moLonLat.Lon, moLonLat.Lat).lat :
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moLonLat.Lat;
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},
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/**
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* APIMethod: getMapObjectLonLatFromLonLat
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*
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* Parameters:
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* lon - {Float}
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* lat - {Float}
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*
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* Returns:
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* {Object} MapObject LonLat built from lon and lat params
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*/
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getMapObjectLonLatFromLonLat: function(lon, lat) {
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var yLatLong;
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if(this.sphericalMercator) {
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var lonlat = this.inverseMercator(lon, lat);
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yLatLong = new YGeoPoint(lonlat.lat, lonlat.lon);
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} else {
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yLatLong = new YGeoPoint(lat, lon);
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}
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return yLatLong;
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},
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// Pixel
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/**
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* APIMethod: getXFromMapObjectPixel
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*
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* Parameters:
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* moPixel - {Object} MapObject Pixel format
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*
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* Returns:
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* {Integer} X value of the MapObject Pixel
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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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* APIMethod: getYFromMapObjectPixel
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*
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* Parameters:
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* moPixel - {Object} MapObject Pixel format
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*
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* Returns:
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* {Integer} Y value of the MapObject Pixel
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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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* APIMethod: getMapObjectPixelFromXY
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*
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* Parameters:
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* x - {Integer}
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* y - {Integer}
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*
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* Returns:
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* {Object} MapObject Pixel from x and y parameters
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*/
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getMapObjectPixelFromXY: function(x, y) {
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return new YCoordPoint(x, y);
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},
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// Size
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/**
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* APIMethod: getMapObjectSizeFromOLSize
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*
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* Parameters:
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* olSize - {<OpenLayers.Size>}
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*
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* Returns:
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* {Object} MapObject Size from olSize parameter
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*/
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getMapObjectSizeFromOLSize: function(olSize) {
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return new YSize(olSize.w, olSize.h);
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},
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CLASS_NAME: "OpenLayers.Layer.Yahoo"
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});
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