[76] | 1 | /* Copyright (c) 2006-2010 by OpenLayers Contributors (see authors.txt for |
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| 2 | * full list of contributors). Published under the Clear BSD license. |
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| 3 | * See http://svn.openlayers.org/trunk/openlayers/license.txt for the |
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| 4 | * full text of the license. */ |
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| 5 | |
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| 6 | |
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| 7 | /** |
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| 8 | * @requires OpenLayers/Layer/SphericalMercator.js |
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| 9 | * @requires OpenLayers/Layer/EventPane.js |
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| 10 | * @requires OpenLayers/Layer/FixedZoomLevels.js |
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| 11 | */ |
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| 12 | |
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| 13 | /** |
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| 14 | * Class: OpenLayers.Layer.Yahoo |
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| 15 | * |
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| 16 | * Inherits from: |
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| 17 | * - <OpenLayers.Layer.EventPane> |
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| 18 | * - <OpenLayers.Layer.FixedZoomLevels> |
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| 19 | */ |
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| 20 | OpenLayers.Layer.Yahoo = OpenLayers.Class( |
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| 21 | OpenLayers.Layer.EventPane, OpenLayers.Layer.FixedZoomLevels, { |
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| 22 | |
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| 23 | /** |
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| 24 | * Constant: MIN_ZOOM_LEVEL |
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| 25 | * {Integer} 0 |
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| 26 | */ |
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| 27 | MIN_ZOOM_LEVEL: 0, |
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| 28 | |
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| 29 | /** |
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| 30 | * Constant: MAX_ZOOM_LEVEL |
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| 31 | * {Integer} 17 |
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| 32 | */ |
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| 33 | MAX_ZOOM_LEVEL: 17, |
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| 34 | |
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| 35 | /** |
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| 36 | * Constant: RESOLUTIONS |
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| 37 | * {Array(Float)} Hardcode these resolutions so that they are more closely |
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| 38 | * tied with the standard wms projection |
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| 39 | */ |
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| 40 | RESOLUTIONS: [ |
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| 41 | 1.40625, |
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| 42 | 0.703125, |
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| 43 | 0.3515625, |
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| 44 | 0.17578125, |
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| 45 | 0.087890625, |
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| 46 | 0.0439453125, |
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| 47 | 0.02197265625, |
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| 48 | 0.010986328125, |
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| 49 | 0.0054931640625, |
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| 50 | 0.00274658203125, |
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| 51 | 0.001373291015625, |
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| 52 | 0.0006866455078125, |
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| 53 | 0.00034332275390625, |
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| 54 | 0.000171661376953125, |
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| 55 | 0.0000858306884765625, |
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| 56 | 0.00004291534423828125, |
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| 57 | 0.00002145767211914062, |
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| 58 | 0.00001072883605957031 |
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| 59 | ], |
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| 60 | |
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| 61 | /** |
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| 62 | * APIProperty: type |
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| 63 | * {YahooMapType} |
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| 64 | */ |
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| 65 | type: null, |
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| 66 | |
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| 67 | /** |
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| 68 | * APIProperty: wrapDateLine |
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| 69 | * {Boolean} Allow user to pan forever east/west. Default is true. |
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| 70 | * Setting this to false only restricts panning if |
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| 71 | * <sphericalMercator> is true. |
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| 72 | */ |
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| 73 | wrapDateLine: true, |
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| 74 | |
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| 75 | /** |
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| 76 | * APIProperty: sphericalMercator |
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| 77 | * {Boolean} Should the map act as a mercator-projected map? This will |
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| 78 | * cause all interactions with the map to be in the actual map projection, |
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| 79 | * which allows support for vector drawing, overlaying other maps, etc. |
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| 80 | */ |
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| 81 | sphericalMercator: false, |
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| 82 | |
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| 83 | /** |
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| 84 | * Constructor: OpenLayers.Layer.Yahoo |
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| 85 | * |
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| 86 | * Parameters: |
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| 87 | * name - {String} |
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| 88 | * options - {Object} |
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| 89 | */ |
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| 90 | initialize: function(name, options) { |
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| 91 | OpenLayers.Layer.EventPane.prototype.initialize.apply(this, arguments); |
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| 92 | OpenLayers.Layer.FixedZoomLevels.prototype.initialize.apply(this, |
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| 93 | arguments); |
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| 94 | if(this.sphericalMercator) { |
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| 95 | OpenLayers.Util.extend(this, OpenLayers.Layer.SphericalMercator); |
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| 96 | this.initMercatorParameters(); |
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| 97 | } |
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| 98 | }, |
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| 99 | |
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| 100 | /** |
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| 101 | * Method: loadMapObject |
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| 102 | */ |
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| 103 | loadMapObject:function() { |
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| 104 | try { //do not crash! |
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| 105 | var size = this.getMapObjectSizeFromOLSize(this.map.getSize()); |
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| 106 | this.mapObject = new YMap(this.div, this.type, size); |
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| 107 | this.mapObject.disableKeyControls(); |
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| 108 | this.mapObject.disableDragMap(); |
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| 109 | |
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| 110 | //can we do smooth panning? (moveByXY is not an API function) |
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| 111 | if ( !this.mapObject.moveByXY || |
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| 112 | (typeof this.mapObject.moveByXY != "function" ) ) { |
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| 113 | |
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| 114 | this.dragPanMapObject = null; |
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| 115 | } |
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| 116 | } catch(e) {} |
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| 117 | }, |
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| 118 | |
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| 119 | /** |
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| 120 | * Method: onMapResize |
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| 121 | * |
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| 122 | */ |
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| 123 | onMapResize: function() { |
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| 124 | try { |
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| 125 | var size = this.getMapObjectSizeFromOLSize(this.map.getSize()); |
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| 126 | this.mapObject.resizeTo(size); |
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| 127 | } catch(e) {} |
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| 128 | }, |
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| 129 | |
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| 130 | |
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| 131 | /** |
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| 132 | * APIMethod: setMap |
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| 133 | * Overridden from EventPane because we need to remove this yahoo event |
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| 134 | * pane which prohibits our drag and drop, and we can only do this |
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| 135 | * once the map has been loaded and centered. |
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| 136 | * |
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| 137 | * Parameters: |
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| 138 | * map - {<OpenLayers.Map>} |
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| 139 | */ |
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| 140 | setMap: function(map) { |
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| 141 | OpenLayers.Layer.EventPane.prototype.setMap.apply(this, arguments); |
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| 142 | |
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| 143 | this.map.events.register("moveend", this, this.fixYahooEventPane); |
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| 144 | }, |
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| 145 | |
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| 146 | /** |
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| 147 | * Method: fixYahooEventPane |
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| 148 | * The map has been centered, so the mysterious yahoo eventpane has been |
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| 149 | * added. we remove it so that it doesnt mess with *our* event pane. |
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| 150 | */ |
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| 151 | fixYahooEventPane: function() { |
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| 152 | var yahooEventPane = OpenLayers.Util.getElement("ygddfdiv"); |
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| 153 | if (yahooEventPane != null) { |
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| 154 | if (yahooEventPane.parentNode != null) { |
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| 155 | yahooEventPane.parentNode.removeChild(yahooEventPane); |
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| 156 | } |
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| 157 | this.map.events.unregister("moveend", this, |
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| 158 | this.fixYahooEventPane); |
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| 159 | } |
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| 160 | }, |
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| 161 | |
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| 162 | /** |
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| 163 | * APIMethod: getWarningHTML |
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| 164 | * |
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| 165 | * Returns: |
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| 166 | * {String} String with information on why layer is broken, how to get |
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| 167 | * it working. |
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| 168 | */ |
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| 169 | getWarningHTML:function() { |
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| 170 | return OpenLayers.i18n( |
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| 171 | "getLayerWarning", {'layerType':'Yahoo', 'layerLib':'Yahoo'} |
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| 172 | ); |
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| 173 | }, |
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| 174 | |
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| 175 | /********************************************************/ |
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| 176 | /* */ |
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| 177 | /* Translation Functions */ |
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| 178 | /* */ |
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| 179 | /* The following functions translate GMaps and OL */ |
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| 180 | /* formats for Pixel, LonLat, Bounds, and Zoom */ |
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| 181 | /* */ |
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| 182 | /********************************************************/ |
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| 183 | |
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| 184 | |
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| 185 | // |
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| 186 | // TRANSLATION: MapObject Zoom <-> OpenLayers Zoom |
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| 187 | // |
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| 188 | |
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| 189 | /** |
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| 190 | * APIMethod: getOLZoomFromMapObjectZoom |
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| 191 | * |
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| 192 | * Parameters: |
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| 193 | * gZoom - {Integer} |
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| 194 | * |
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| 195 | * Returns: |
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| 196 | * {Integer} An OpenLayers Zoom level, translated from the passed in gZoom |
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| 197 | * Returns null if null value is passed in. |
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| 198 | */ |
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| 199 | getOLZoomFromMapObjectZoom: function(moZoom) { |
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| 200 | var zoom = null; |
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| 201 | if (moZoom != null) { |
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| 202 | zoom = OpenLayers.Layer.FixedZoomLevels.prototype.getOLZoomFromMapObjectZoom.apply(this, [moZoom]); |
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| 203 | zoom = 18 - zoom; |
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| 204 | } |
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| 205 | return zoom; |
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| 206 | }, |
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| 207 | |
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| 208 | /** |
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| 209 | * APIMethod: getMapObjectZoomFromOLZoom |
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| 210 | * |
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| 211 | * Parameters: |
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| 212 | * olZoom - {Integer} |
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| 213 | * |
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| 214 | * Returns: |
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| 215 | * {Integer} A MapObject level, translated from the passed in olZoom |
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| 216 | * Returns null if null value is passed in |
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| 217 | */ |
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| 218 | getMapObjectZoomFromOLZoom: function(olZoom) { |
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| 219 | var zoom = null; |
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| 220 | if (olZoom != null) { |
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| 221 | zoom = OpenLayers.Layer.FixedZoomLevels.prototype.getMapObjectZoomFromOLZoom.apply(this, [olZoom]); |
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| 222 | zoom = 18 - zoom; |
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| 223 | } |
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| 224 | return zoom; |
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| 225 | }, |
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| 226 | |
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| 227 | /************************************ |
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| 228 | * * |
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| 229 | * MapObject Interface Controls * |
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| 230 | * * |
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| 231 | ************************************/ |
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| 232 | |
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| 233 | |
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| 234 | // Get&Set Center, Zoom |
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| 235 | |
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| 236 | /** |
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| 237 | * APIMethod: setMapObjectCenter |
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| 238 | * Set the mapObject to the specified center and zoom |
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| 239 | * |
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| 240 | * Parameters: |
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| 241 | * center - {Object} MapObject LonLat format |
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| 242 | * zoom - {int} MapObject zoom format |
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| 243 | */ |
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| 244 | setMapObjectCenter: function(center, zoom) { |
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| 245 | this.mapObject.drawZoomAndCenter(center, zoom); |
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| 246 | }, |
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| 247 | |
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| 248 | /** |
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| 249 | * APIMethod: getMapObjectCenter |
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| 250 | * |
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| 251 | * Returns: |
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| 252 | * {Object} The mapObject's current center in Map Object format |
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| 253 | */ |
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| 254 | getMapObjectCenter: function() { |
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| 255 | return this.mapObject.getCenterLatLon(); |
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| 256 | }, |
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| 257 | |
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| 258 | /** |
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| 259 | * APIMethod: dragPanMapObject |
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| 260 | * |
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| 261 | * Parameters: |
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| 262 | * dX - {Integer} |
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| 263 | * dY - {Integer} |
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| 264 | */ |
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| 265 | dragPanMapObject: function(dX, dY) { |
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| 266 | this.mapObject.moveByXY({ |
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| 267 | 'x': -dX, |
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| 268 | 'y': dY |
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| 269 | }); |
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| 270 | }, |
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| 271 | |
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| 272 | /** |
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| 273 | * APIMethod: getMapObjectZoom |
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| 274 | * |
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| 275 | * Returns: |
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| 276 | * {Integer} The mapObject's current zoom, in Map Object format |
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| 277 | */ |
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| 278 | getMapObjectZoom: function() { |
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| 279 | return this.mapObject.getZoomLevel(); |
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| 280 | }, |
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| 281 | |
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| 282 | |
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| 283 | // LonLat - Pixel Translation |
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| 284 | |
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| 285 | /** |
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| 286 | * APIMethod: getMapObjectLonLatFromMapObjectPixel |
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| 287 | * |
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| 288 | * Parameters: |
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| 289 | * moPixel - {Object} MapObject Pixel format |
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| 290 | * |
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| 291 | * Returns: |
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| 292 | * {Object} MapObject LonLat translated from MapObject Pixel |
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| 293 | */ |
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| 294 | getMapObjectLonLatFromMapObjectPixel: function(moPixel) { |
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| 295 | return this.mapObject.convertXYLatLon(moPixel); |
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| 296 | }, |
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| 297 | |
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| 298 | /** |
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| 299 | * APIMethod: getMapObjectPixelFromMapObjectLonLat |
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| 300 | * |
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| 301 | * Parameters: |
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| 302 | * moLonLat - {Object} MapObject LonLat format |
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| 303 | * |
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| 304 | * Returns: |
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| 305 | * {Object} MapObject Pixel transtlated from MapObject LonLat |
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| 306 | */ |
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| 307 | getMapObjectPixelFromMapObjectLonLat: function(moLonLat) { |
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| 308 | return this.mapObject.convertLatLonXY(moLonLat); |
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| 309 | }, |
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| 310 | |
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| 311 | |
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| 312 | /************************************ |
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| 313 | * * |
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| 314 | * MapObject Primitives * |
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| 315 | * * |
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| 316 | ************************************/ |
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| 317 | |
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| 318 | |
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| 319 | // LonLat |
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| 320 | |
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| 321 | /** |
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| 322 | * APIMethod: getLongitudeFromMapObjectLonLat |
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| 323 | * |
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| 324 | * Parameters: |
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| 325 | * moLonLat - {Object} MapObject LonLat format |
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| 326 | * |
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| 327 | * Returns: |
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| 328 | * {Float} Longitude of the given MapObject LonLat |
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| 329 | */ |
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| 330 | getLongitudeFromMapObjectLonLat: function(moLonLat) { |
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| 331 | return this.sphericalMercator ? |
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| 332 | this.forwardMercator(moLonLat.Lon, moLonLat.Lat).lon : |
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| 333 | moLonLat.Lon; |
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| 334 | }, |
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| 335 | |
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| 336 | /** |
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| 337 | * APIMethod: getLatitudeFromMapObjectLonLat |
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| 338 | * |
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| 339 | * Parameters: |
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| 340 | * moLonLat - {Object} MapObject LonLat format |
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| 341 | * |
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| 342 | * Returns: |
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| 343 | * {Float} Latitude of the given MapObject LonLat |
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| 344 | */ |
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| 345 | getLatitudeFromMapObjectLonLat: function(moLonLat) { |
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| 346 | return this.sphericalMercator ? |
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| 347 | this.forwardMercator(moLonLat.Lon, moLonLat.Lat).lat : |
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| 348 | moLonLat.Lat; |
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| 349 | }, |
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| 350 | |
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| 351 | /** |
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| 352 | * APIMethod: getMapObjectLonLatFromLonLat |
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| 353 | * |
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| 354 | * Parameters: |
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| 355 | * lon - {Float} |
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| 356 | * lat - {Float} |
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| 357 | * |
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| 358 | * Returns: |
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| 359 | * {Object} MapObject LonLat built from lon and lat params |
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| 360 | */ |
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| 361 | getMapObjectLonLatFromLonLat: function(lon, lat) { |
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| 362 | var yLatLong; |
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| 363 | if(this.sphericalMercator) { |
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| 364 | var lonlat = this.inverseMercator(lon, lat); |
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| 365 | yLatLong = new YGeoPoint(lonlat.lat, lonlat.lon); |
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| 366 | } else { |
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| 367 | yLatLong = new YGeoPoint(lat, lon); |
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| 368 | } |
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| 369 | return yLatLong; |
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| 370 | }, |
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| 371 | |
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| 372 | // Pixel |
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| 373 | |
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| 374 | /** |
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| 375 | * APIMethod: getXFromMapObjectPixel |
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| 376 | * |
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| 377 | * Parameters: |
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| 378 | * moPixel - {Object} MapObject Pixel format |
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| 379 | * |
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| 380 | * Returns: |
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| 381 | * {Integer} X value of the MapObject Pixel |
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| 382 | */ |
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| 383 | getXFromMapObjectPixel: function(moPixel) { |
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| 384 | return moPixel.x; |
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| 385 | }, |
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| 386 | |
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| 387 | /** |
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| 388 | * APIMethod: getYFromMapObjectPixel |
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| 389 | * |
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| 390 | * Parameters: |
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| 391 | * moPixel - {Object} MapObject Pixel format |
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| 392 | * |
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| 393 | * Returns: |
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| 394 | * {Integer} Y value of the MapObject Pixel |
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| 395 | */ |
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| 396 | getYFromMapObjectPixel: function(moPixel) { |
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| 397 | return moPixel.y; |
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| 398 | }, |
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| 399 | |
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| 400 | /** |
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| 401 | * APIMethod: getMapObjectPixelFromXY |
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| 402 | * |
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| 403 | * Parameters: |
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| 404 | * x - {Integer} |
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| 405 | * y - {Integer} |
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| 406 | * |
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| 407 | * Returns: |
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| 408 | * {Object} MapObject Pixel from x and y parameters |
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| 409 | */ |
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| 410 | getMapObjectPixelFromXY: function(x, y) { |
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| 411 | return new YCoordPoint(x, y); |
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| 412 | }, |
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| 413 | |
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| 414 | // Size |
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| 415 | |
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| 416 | /** |
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| 417 | * APIMethod: getMapObjectSizeFromOLSize |
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| 418 | * |
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| 419 | * Parameters: |
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| 420 | * olSize - {<OpenLayers.Size>} |
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| 421 | * |
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| 422 | * Returns: |
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| 423 | * {Object} MapObject Size from olSize parameter |
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| 424 | */ |
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| 425 | getMapObjectSizeFromOLSize: function(olSize) { |
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| 426 | return new YSize(olSize.w, olSize.h); |
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| 427 | }, |
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| 428 | |
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| 429 | CLASS_NAME: "OpenLayers.Layer.Yahoo" |
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| 430 | }); |
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