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.VirtualEarth |
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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.VirtualEarth = OpenLayers.Class( |
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21 | OpenLayers.Layer.EventPane, |
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22 | OpenLayers.Layer.FixedZoomLevels, { |
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23 | |
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24 | /** |
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25 | * Constant: MIN_ZOOM_LEVEL |
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26 | * {Integer} 1 |
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27 | */ |
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28 | MIN_ZOOM_LEVEL: 1, |
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29 | |
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30 | /** |
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31 | * Constant: MAX_ZOOM_LEVEL |
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32 | * {Integer} 19 |
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33 | */ |
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34 | MAX_ZOOM_LEVEL: 19, |
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35 | |
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36 | /** |
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37 | * Constant: RESOLUTIONS |
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38 | * {Array(Float)} Hardcode these resolutions so that they are more closely |
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39 | * tied with the standard wms projection |
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40 | */ |
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41 | RESOLUTIONS: [ |
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42 | 1.40625, |
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43 | 0.703125, |
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44 | 0.3515625, |
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45 | 0.17578125, |
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46 | 0.087890625, |
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47 | 0.0439453125, |
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48 | 0.02197265625, |
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49 | 0.010986328125, |
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50 | 0.0054931640625, |
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51 | 0.00274658203125, |
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52 | 0.001373291015625, |
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53 | 0.0006866455078125, |
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54 | 0.00034332275390625, |
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55 | 0.000171661376953125, |
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56 | 0.0000858306884765625, |
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57 | 0.00004291534423828125, |
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58 | 0.00002145767211914062, |
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59 | 0.00001072883605957031, |
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60 | 0.00000536441802978515 |
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61 | ], |
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62 | |
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63 | /** |
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64 | * APIProperty: type |
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65 | * {VEMapType} |
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66 | */ |
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67 | type: null, |
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68 | |
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69 | /** |
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70 | * APIProperty: wrapDateLine |
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71 | * {Boolean} Allow user to pan forever east/west. Default is true. |
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72 | * Setting this to false only restricts panning if |
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73 | * <sphericalMercator> is true. |
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74 | */ |
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75 | wrapDateLine: true, |
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76 | |
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77 | /** |
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78 | * APIProperty: sphericalMercator |
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79 | * {Boolean} Should the map act as a mercator-projected map? This will |
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80 | * cause all interactions with the map to be in the actual map |
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81 | * projection, which allows support for vector drawing, overlaying |
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82 | * other maps, etc. |
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83 | */ |
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84 | sphericalMercator: false, |
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85 | |
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86 | /** |
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87 | * APIProperty: animationEnabled |
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88 | * {Boolean} If set to true, the transition between zoom levels will be |
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89 | * animated. Set to false to match the zooming experience of other |
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90 | * layer types. Default is true. |
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91 | */ |
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92 | animationEnabled: true, |
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93 | |
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94 | /** |
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95 | * Constructor: OpenLayers.Layer.VirtualEarth |
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96 | * |
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97 | * Parameters: |
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98 | * name - {String} |
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99 | * options - {Object} |
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100 | */ |
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101 | initialize: function(name, options) { |
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102 | OpenLayers.Layer.EventPane.prototype.initialize.apply(this, arguments); |
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103 | OpenLayers.Layer.FixedZoomLevels.prototype.initialize.apply(this, |
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104 | arguments); |
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105 | if(this.sphericalMercator) { |
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106 | OpenLayers.Util.extend(this, OpenLayers.Layer.SphericalMercator); |
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107 | this.initMercatorParameters(); |
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108 | } |
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109 | }, |
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110 | |
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111 | /** |
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112 | * Method: loadMapObject |
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113 | */ |
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114 | loadMapObject:function() { |
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115 | |
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116 | // create div and set to same size as map |
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117 | var veDiv = OpenLayers.Util.createDiv(this.name); |
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118 | var sz = this.map.getSize(); |
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119 | veDiv.style.width = sz.w + "px"; |
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120 | veDiv.style.height = sz.h + "px"; |
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121 | this.div.appendChild(veDiv); |
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122 | |
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123 | try { // crash prevention |
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124 | this.mapObject = new VEMap(this.name); |
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125 | } catch (e) { } |
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126 | |
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127 | if (this.mapObject != null) { |
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128 | try { // this is to catch a Mozilla bug without falling apart |
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129 | |
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130 | // The fourth argument is whether the map is 'fixed' -- not |
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131 | // draggable. See: |
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132 | // http://blogs.msdn.com/virtualearth/archive/2007/09/28/locking-a-virtual-earth-map.aspx |
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133 | // |
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134 | this.mapObject.LoadMap(null, null, this.type, true); |
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135 | this.mapObject.AttachEvent("onmousedown", OpenLayers.Function.True); |
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136 | |
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137 | } catch (e) { } |
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138 | this.mapObject.HideDashboard(); |
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139 | if(typeof this.mapObject.SetAnimationEnabled == "function") { |
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140 | this.mapObject.SetAnimationEnabled(this.animationEnabled); |
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141 | } |
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142 | } |
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143 | |
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144 | //can we do smooth panning? this is an unpublished method, so we need |
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145 | // to be careful |
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146 | if ( !this.mapObject || |
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147 | !this.mapObject.vemapcontrol || |
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148 | !this.mapObject.vemapcontrol.PanMap || |
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149 | (typeof this.mapObject.vemapcontrol.PanMap != "function")) { |
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150 | |
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151 | this.dragPanMapObject = null; |
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152 | } |
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153 | |
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154 | }, |
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155 | |
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156 | /** |
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157 | * Method: onMapResize |
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158 | */ |
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159 | onMapResize: function() { |
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160 | this.mapObject.Resize(this.map.size.w, this.map.size.h); |
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161 | }, |
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162 | |
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163 | /** |
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164 | * APIMethod: getWarningHTML |
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165 | * |
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166 | * Returns: |
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167 | * {String} String with information on why layer is broken, how to get |
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168 | * it working. |
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169 | */ |
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170 | getWarningHTML:function() { |
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171 | return OpenLayers.i18n( |
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172 | "getLayerWarning", {'layerType':'VE', 'layerLib':'VirtualEarth'} |
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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 | |
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178 | /************************************ |
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179 | * * |
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180 | * MapObject Interface Controls * |
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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 | // Get&Set Center, Zoom |
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186 | |
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187 | /** |
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188 | * APIMethod: setMapObjectCenter |
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189 | * Set the mapObject to the specified center and zoom |
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190 | * |
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191 | * Parameters: |
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192 | * center - {Object} MapObject LonLat format |
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193 | * zoom - {int} MapObject zoom format |
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194 | */ |
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195 | setMapObjectCenter: function(center, zoom) { |
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196 | this.mapObject.SetCenterAndZoom(center, zoom); |
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197 | }, |
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198 | |
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199 | /** |
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200 | * APIMethod: getMapObjectCenter |
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201 | * |
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202 | * Returns: |
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203 | * {Object} The mapObject's current center in Map Object format |
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204 | */ |
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205 | getMapObjectCenter: function() { |
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206 | return this.mapObject.GetCenter(); |
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207 | }, |
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208 | |
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209 | /** |
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210 | * APIMethod: dragPanMapObject |
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211 | * |
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212 | * Parameters: |
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213 | * dX - {Integer} |
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214 | * dY - {Integer} |
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215 | */ |
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216 | dragPanMapObject: function(dX, dY) { |
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217 | this.mapObject.vemapcontrol.PanMap(dX, -dY); |
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218 | }, |
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219 | |
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220 | /** |
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221 | * APIMethod: getMapObjectZoom |
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222 | * |
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223 | * Returns: |
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224 | * {Integer} The mapObject's current zoom, in Map Object format |
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225 | */ |
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226 | getMapObjectZoom: function() { |
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227 | return this.mapObject.GetZoomLevel(); |
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228 | }, |
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229 | |
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230 | |
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231 | // LonLat - Pixel Translation |
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232 | |
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233 | /** |
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234 | * APIMethod: getMapObjectLonLatFromMapObjectPixel |
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235 | * |
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236 | * Parameters: |
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237 | * moPixel - {Object} MapObject Pixel format |
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238 | * |
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239 | * Returns: |
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240 | * {Object} MapObject LonLat translated from MapObject Pixel |
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241 | */ |
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242 | getMapObjectLonLatFromMapObjectPixel: function(moPixel) { |
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243 | //the conditional here is to test if we are running the v6 of VE |
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244 | return (typeof VEPixel != 'undefined') |
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245 | ? this.mapObject.PixelToLatLong(moPixel) |
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246 | : this.mapObject.PixelToLatLong(moPixel.x, moPixel.y); |
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247 | }, |
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248 | |
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249 | /** |
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250 | * APIMethod: getMapObjectPixelFromMapObjectLonLat |
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251 | * |
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252 | * Parameters: |
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253 | * moLonLat - {Object} MapObject LonLat format |
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254 | * |
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255 | * Returns: |
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256 | * {Object} MapObject Pixel transtlated from MapObject LonLat |
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257 | */ |
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258 | getMapObjectPixelFromMapObjectLonLat: function(moLonLat) { |
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259 | return this.mapObject.LatLongToPixel(moLonLat); |
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260 | }, |
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261 | |
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262 | |
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263 | /************************************ |
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264 | * * |
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265 | * MapObject Primitives * |
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266 | * * |
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267 | ************************************/ |
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268 | |
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269 | |
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270 | // LonLat |
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271 | |
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272 | /** |
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273 | * APIMethod: getLongitudeFromMapObjectLonLat |
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274 | * |
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275 | * Parameters: |
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276 | * moLonLat - {Object} MapObject LonLat format |
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277 | * |
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278 | * Returns: |
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279 | * {Float} Longitude of the given MapObject LonLat |
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280 | */ |
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281 | getLongitudeFromMapObjectLonLat: function(moLonLat) { |
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282 | return this.sphericalMercator ? |
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283 | this.forwardMercator(moLonLat.Longitude, moLonLat.Latitude).lon : |
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284 | moLonLat.Longitude; |
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285 | }, |
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286 | |
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287 | /** |
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288 | * APIMethod: getLatitudeFromMapObjectLonLat |
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289 | * |
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290 | * Parameters: |
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291 | * moLonLat - {Object} MapObject LonLat format |
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292 | * |
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293 | * Returns: |
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294 | * {Float} Latitude of the given MapObject LonLat |
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295 | */ |
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296 | getLatitudeFromMapObjectLonLat: function(moLonLat) { |
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297 | return this.sphericalMercator ? |
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298 | this.forwardMercator(moLonLat.Longitude, moLonLat.Latitude).lat : |
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299 | moLonLat.Latitude; |
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300 | }, |
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301 | |
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302 | /** |
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303 | * APIMethod: getMapObjectLonLatFromLonLat |
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304 | * |
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305 | * Parameters: |
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306 | * lon - {Float} |
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307 | * lat - {Float} |
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308 | * |
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309 | * Returns: |
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310 | * {Object} MapObject LonLat built from lon and lat params |
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311 | */ |
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312 | getMapObjectLonLatFromLonLat: function(lon, lat) { |
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313 | var veLatLong; |
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314 | if(this.sphericalMercator) { |
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315 | var lonlat = this.inverseMercator(lon, lat); |
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316 | veLatLong = new VELatLong(lonlat.lat, lonlat.lon); |
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317 | } else { |
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318 | veLatLong = new VELatLong(lat, lon); |
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319 | } |
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320 | return veLatLong; |
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321 | }, |
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322 | |
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323 | // Pixel |
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324 | |
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325 | /** |
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326 | * APIMethod: getXFromMapObjectPixel |
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327 | * |
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328 | * Parameters: |
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329 | * moPixel - {Object} MapObject Pixel format |
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330 | * |
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331 | * Returns: |
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332 | * {Integer} X value of the MapObject Pixel |
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333 | */ |
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334 | getXFromMapObjectPixel: function(moPixel) { |
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335 | return moPixel.x; |
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336 | }, |
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337 | |
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338 | /** |
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339 | * APIMethod: getYFromMapObjectPixel |
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340 | * |
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341 | * Parameters: |
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342 | * moPixel - {Object} MapObject Pixel format |
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343 | * |
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344 | * Returns: |
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345 | * {Integer} Y value of the MapObject Pixel |
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346 | */ |
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347 | getYFromMapObjectPixel: function(moPixel) { |
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348 | return moPixel.y; |
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349 | }, |
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350 | |
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351 | /** |
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352 | * APIMethod: getMapObjectPixelFromXY |
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353 | * |
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354 | * Parameters: |
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355 | * x - {Integer} |
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356 | * y - {Integer} |
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357 | * |
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358 | * Returns: |
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359 | * {Object} MapObject Pixel from x and y parameters |
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360 | */ |
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361 | getMapObjectPixelFromXY: function(x, y) { |
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362 | //the conditional here is to test if we are running the v6 of VE |
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363 | return (typeof VEPixel != 'undefined') ? new VEPixel(x, y) |
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364 | : new Msn.VE.Pixel(x, y); |
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365 | }, |
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366 | |
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367 | CLASS_NAME: "OpenLayers.Layer.VirtualEarth" |
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368 | }); |
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