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1
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//see also https://github.com/geetarista/jquery-plugin-template/blob/master/jquery.plugin-template.js
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2
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3
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/**
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4
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* Expected dom structure:
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5
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* '<div class="ahah-content" rel="'.$cdm_proxy_url.'"><span class="loading">Loading ....</span></div>';
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6
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*/
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(function($, document, window, undefined) {
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8
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9
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$.fn.cdm_openlayers_map = function(mapserverBaseUrl, mapserverVersion, options) {
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10
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var opts = $.extend({},$.fn.cdm_openlayers_map.defaults, options);
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12
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return this.each(function(){
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this.cdmOpenlayersMap = new CdmOpenLayers.Map($(this), mapserverBaseUrl, mapserverVersion, opts);
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this.cdmOpenlayersMap.init();
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16
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}); // END each
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17
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}; // END cdm_openlayers_map
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})(jQuery, document, window, undefined);
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21
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(function($){
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$.fn.cdm_openlayers_map.defaults = { // set up default options
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legendPosition: null, // 1,2,3,4,5,6 = display a legend in the corner specified by the number
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25
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distributionOpacity: 0.75,
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legendOpacity: 0.75,
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boundingBox: "-180,-90,180,90",
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showLayerSwitcher: false,
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baseLayerNames: ["osgeo_vmap0"],
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defaultBaseLayerName: 'osgeo_vmap0',
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maxZoom: 4,
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minZoom: 0,
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33
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/**
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34
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* allows the map to display parts of the layers which are outside
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35
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* the maxExtent if the aspect ratio of the map and of the baselayer
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36
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* are not equal
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37
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*/
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displayOutsideMaxExtent: false,
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39
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customWMSBaseLayerData: {
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name: null,
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url: null,
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params: null,
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projection: null,
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max_extent: null,
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45
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units: null
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46
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}
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47
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// customWMSBaseLayerData: {
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48
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// name: "Euro+Med",
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49
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// url: "http://edit.africamuseum.be/geoserver/topp/wms",
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50
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// params: {layers: "topp:em_tiny_jan2003", format:"image/png", tiled: true},
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51
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// projection: "EPSG:7777777",
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// maxExtent: "-1600072.75, -1800000, 5600000, 5850093",
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53
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// units: 'm'
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// }
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};
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56
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})(jQuery);
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60
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/**************************************************************************
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61
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* CdmOpenLayers
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62
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**************************************************************************/
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(function() {
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64
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65
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/**
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* The CdmOpenLayers namespace definition
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*/
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window.CdmOpenLayers = (function () {
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69
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var projections = {
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epsg_4326: new OpenLayers.Projection("EPSG:4326"),
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epsg_900913: new OpenLayers.Projection("EPSG:900913"),
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epsg_3857: new OpenLayers.Projection("EPSG:3857")
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};
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var mapExtends = {
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epsg_4326: new OpenLayers.Bounds(-180, -90, 180, 90),
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epsg_900913: new OpenLayers.Bounds(-180, -90, 180, 90),
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epsg_3857: new OpenLayers.Bounds(-180, -90, 180, 90)
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};
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// transform epsg_900913 to units meter
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mapExtends.epsg_900913.transform(projections.epsg_4326, projections.epsg_900913);
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mapExtends.epsg_3857.transform(projections.epsg_4326, projections.epsg_3857);
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83
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84
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// make public by returning an object
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85
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return {
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projections: projections,
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mapExtends: mapExtends,
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88
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getLayerByName: function(layerName){} // initially empty fuction, will be populated by openlayers_layers.js
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89
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};
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90
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91
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})(); // end of namespace definition for CdmOpenLayers
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92
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93
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/**
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* The CdmOpenLayers.Map constructor
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* @param mapElement
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* @param mapserverBaseUrl
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* @param mapserverVersion
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* @param opts
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99
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* @returns
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*/
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window.CdmOpenLayers.Map = function(mapElement, mapserverBaseUrl, mapserverVersion, opts){
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102
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var mapServicePath = '/edit_wp5';
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105
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// firebug console stub (avoids errors if firebug is not active)
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106
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if(typeof console === "undefined") {
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console = { log: function() { } };
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108
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}
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109
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// sanitize given options
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111
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try {
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opts.customWMSBaseLayerData.max_extent = OpenLayers.Bounds.fromString(opts.customWMSBaseLayerData.max_extent);
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} catch(e){
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opts.customWMSBaseLayerData.max_extent = null;
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}
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116
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117
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var legendImgSrc = null;
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119
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var map = null;
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121
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var infoElement = null;
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123
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var dataBounds = null;
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125
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126
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var baseLayers = [];
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127
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var defaultBaseLayer = null;
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128
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129
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var mapHeight = mapElement.height();
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130
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var mapWidth = mapElement.width();
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131
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132
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var defaultControls = [
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133
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new OpenLayers.Control.PanZoom(),
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134
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new OpenLayers.Control.Navigation({zoomWheelEnabled: false, handleRightClicks:true, zoomBoxKeyMask: OpenLayers.Handler.MOD_CTRL})
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135
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];
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136
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137
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// var dataProj = new OpenLayers.Projection("EPSG:4326");
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138
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139
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var dataLayerOptions = {
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140
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isBaseLayer: false,
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141
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displayInLayerSwitcher: true
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142
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};
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143
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144
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var layerByNameMap = {
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145
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tdwg1: 'topp:tdwg_level_1',
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tdwg2: 'topp:tdwg_level_2',
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147
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tdwg3: 'topp:tdwg_level_3',
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148
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tdwg4: 'topp:tdwg_level_4'
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149
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};
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150
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151
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/**
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152
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*
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153
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*/
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154
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this.init = function(){ // public function
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155
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156
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createLayers(opts.baseLayerNames, opts.defaultBaseLayerName, opts.customWMSBaseLayerData);
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157
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158
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initMap();
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159
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160
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// -- Distribution Layer --
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161
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var mapServiceRequest;
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162
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var distributionQuery = mapElement.attr('distributionQuery');
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163
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164
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if(distributionQuery !== undefined){
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165
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if(typeof legendPosition == 'number'){
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166
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distributionQuery = mergeQueryStrings(distributionQuery, 'legend=1&mlp=' + opts.legendPosition);
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167
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}
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168
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169
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distributionQuery = mergeQueryStrings(distributionQuery, 'callback=?');
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var legendFormatQuery = mapElement.attr('legendFormatQuery');
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171
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if(legendFormatQuery !== undefined){
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legendImgSrc = mergeQueryStrings('/GetLegendGraphic?SERVICE=WMS&VERSION=1.1.1', legendFormatQuery);
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}
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175
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mapServiceRequest = mapserverBaseUrl + mapServicePath + '/' + mapserverVersion + '/areas.php?' + distributionQuery;
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177
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jQuery.ajax({
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url: mapServiceRequest,
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dataType: "jsonp",
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180
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success: function(data){
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181
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addDataLayer(data);
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182
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}
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183
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});
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184
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}
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185
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186
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// -- Occurrence Layer --
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187
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var occurrenceQuery = mapElement.attr('occurrenceQuery');
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188
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if(occurrenceQuery !== undefined){
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189
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// if(typeof legendPosition == 'number'){
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190
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// occurrenceQuery = mergeQueryStrings(distributionQuery, 'legend=1&mlp=' + opts.legendPosition);
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191
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// }
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192
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193
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occurrenceQuery = mergeQueryStrings(occurrenceQuery, 'callback=?');
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194
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// var legendFormatQuery = mapElement.attr('legendFormatQuery');
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195
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// if(legendFormatQuery !== undefined){
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196
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// legendImgSrc = mergeQueryStrings('/GetLegendGraphic?SERVICE=WMS&VERSION=1.1.1', legendFormatQuery);
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197
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// }
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198
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199
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mapServiceRequest = mapserverBaseUrl + mapServicePath + '/' + mapserverVersion + '/points.php?' + occurrenceQuery;
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200
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201
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jQuery.ajax({
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url: mapServiceRequest,
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203
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dataType: "jsonp",
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204
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success: function(data){
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205
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addDataLayer(data);
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206
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}
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207
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});
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208
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}
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209
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210
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211
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};
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212
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213
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/**
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214
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* public function
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215
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*/
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216
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this.registerEvents = function(events){
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217
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for (var key in events) {
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218
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if (events.hasOwnProperty(key)) {
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219
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map.events.register(key, map , events[key]);
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220
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}
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221
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}
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222
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};
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223
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224
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/**
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225
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* public function
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226
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*/
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227
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this.getMap = function(){
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228
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return map;
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229
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};
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230
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231
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/**
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232
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* Prints info on the current map into the jQuery element
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233
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* as set in the options (opts.infoElement)
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234
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* public function
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235
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*
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236
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* @param jQuery $element
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237
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*/
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238
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this.printInfo = function(){
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239
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240
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var mapExtendDegree = map.getExtent().clone();
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241
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mapExtendDegree.transform(map.baseLayer.projection, CdmOpenLayers.projections.epsg_4326);
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242
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243
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var info = "<dl>";
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244
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info += "<dt>zoom:<dt><dd>" + map.getZoom() + "</dd>";
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245
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if(opts.debug){
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246
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info += "<dt>map resolution:<dt><dd>" + map.getResolution() + "</dd>";
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247
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info += "<dt>map max resolution:<dt><dd>" + map.getMaxResolution() + "</dd>";
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248
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info += "<dt>map scale:<dt><dd>" + map.getScale() + "</dd>";
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249
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info += "<dt>map extent bbox:<dt><dd>" + map.getExtent().toBBOX() + " (" + mapExtendDegree.toBBOX() + ")</dd>";
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250
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info += "<dt>map maxExtent bbox:<dt><dd>" + map.getMaxExtent().toBBOX() + "</dd>";
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251
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info += "<dt>baselayer projection:<dt><dd>" + map.baseLayer.projection.getCode() + "</dd>";
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252
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} else {
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253
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info += "<dt>bbox:<dt><dd>" + mapExtendDegree.toBBOX() + "</dd>";
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254
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}
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255
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info += "</dl>";
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256
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257
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if(infoElement == null){
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258
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infoElement = jQuery('<div class="map_info"></div>');
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259
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mapElement.parent().after(infoElement);
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260
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}
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261
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infoElement.html(info);
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262
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};
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|
263
|
|
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264
|
/**
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265
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* Initialize the Openlayers Map with the base layer
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|
266
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*/
|
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267
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var initMap = function(){
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268
|
|
|
269
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|
270
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if(opts.showLayerSwitcher === true){
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271
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defaultControls.push(new OpenLayers.Control.LayerSwitcher({'ascending':false}));
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|
272
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}
|
|
273
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274
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// var maxExtentByAspectRatio = cropBoundsToAspectRatio(defaultBaseLayer.maxExtent, mapWidth/mapHeight);
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|
275
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var maxResolution = null;
|
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276
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// gmaps has no maxExtent at this point, need to check for null
|
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277
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if(defaultBaseLayer.maxExtent != null){
|
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278
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maxResolution = Math[(opts.displayOutsideMaxExtent ? 'max' : 'min')](
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279
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defaultBaseLayer.maxExtent.getWidth() / mapWidth,
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280
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defaultBaseLayer.maxExtent.getHeight() / mapHeight
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|
281
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);
|
|
282
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}
|
|
283
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console.log("mapOptions.maxResolution: " + maxResolution);
|
|
284
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console.log("mapOptions.restrictedExtent: " + defaultBaseLayer.maxExtent);
|
|
285
|
|
|
286
|
map = new OpenLayers.Map(
|
|
287
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"openlayers_map",
|
|
288
|
{
|
|
289
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// defines the map ui elements and interaction features
|
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290
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controls: defaultControls,
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|
291
|
|
|
292
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// maxResolution determines the lowest zoom level and thus places the map
|
|
293
|
// in its maximum extent into the available view port so that no additinal
|
|
294
|
// gutter is visible and no parts of the map are hidden
|
|
295
|
// see http://trac.osgeo.org/openlayers/wiki/SettingZoomLevels
|
|
296
|
// IMPORTANT!!!
|
|
297
|
// the maxResulution set here will be overwritten if the baselayers maxResolution
|
|
298
|
// it is set
|
|
299
|
maxResolution: maxResolution,
|
|
300
|
|
|
301
|
// setting restrictedExtent the the maxExtent prevents from panning the
|
|
302
|
// map out of its bounds
|
|
303
|
restrictedExtent: defaultBaseLayer.maxExtent,
|
|
304
|
// maxExtent: defaultBaseLayer.maxExtent,
|
|
305
|
|
|
306
|
// Setting the map.fractionalZoom property to true allows zooming to an arbitrary level
|
|
307
|
// (between the min and max resolutions).
|
|
308
|
// fractional tiles are not supported by XYZ layers like OSM so this option would
|
|
309
|
// however break the tile retrieval for OSM (e.g.: tile for frational zoom level
|
|
310
|
// 1.2933333333333332 = http://b.tile.openstreetmap.org/1.2933333333333332/1/0.png)
|
|
311
|
fractionalZoom: defaultBaseLayer.CLASS_NAME != "OpenLayers.Layer.OSM" && defaultBaseLayer.CLASS_NAME != "OpenLayers.Layer.XYZ",
|
|
312
|
|
|
313
|
eventListeners: opts.eventListeners
|
|
314
|
|
|
315
|
}
|
|
316
|
);
|
|
317
|
|
|
318
|
//add the base layers
|
|
319
|
map.addLayers(baseLayers);
|
|
320
|
map.setBaseLayer(defaultBaseLayer);
|
|
321
|
|
|
322
|
// calculate the bounds to zoom to
|
|
323
|
zoomToBounds = zoomToBoundsFor(opts.boundingBox, defaultBaseLayer);
|
|
324
|
zoomToBounds = cropBoundsToAspectRatio(zoomToBounds, map.getSize().w / map.getSize().h);
|
|
325
|
console.log("zoomToBounds: " + zoomToBounds);
|
|
326
|
|
|
327
|
// zoom to the extent of the bbox
|
|
328
|
map.zoomToExtent(zoomToBounds, true);
|
|
329
|
|
|
330
|
// readjust if the zoom level is out side of the min max
|
|
331
|
// if(map.getZoom() > opts.maxZoom){
|
|
332
|
// map.zoomTo(opts.maxZoom);
|
|
333
|
// } else if(map.getZoom() < opts.minZoom){
|
|
334
|
// map.zoomTo(opts.minZoom);
|
|
335
|
// }
|
|
336
|
|
|
337
|
};
|
|
338
|
|
|
339
|
/**
|
|
340
|
* add a distribution layer
|
|
341
|
*/
|
|
342
|
var addDataLayer = function(mapResponseObj){
|
|
343
|
|
|
344
|
var layer;
|
|
345
|
// add additional layers, get them from the mapResponseObj
|
|
346
|
if(mapResponseObj !== undefined){
|
|
347
|
if(mapResponseObj.points_sld !== undefined){
|
|
348
|
// it is a response from the points.php
|
|
349
|
|
|
350
|
var geoserverUri;
|
|
351
|
if(mapResponseObj.geoserver) {
|
|
352
|
geoserverUri = mapResponseObj.geoserver;
|
|
353
|
} else {
|
|
354
|
// it is an old servive which is not providing the corresponding geoserver URI, so we guess it
|
|
355
|
geoserverUri = mapserverBaseUrl + "/geoserver/wms";
|
|
356
|
}
|
|
357
|
|
|
358
|
//TODO points_sld should be renamed to sld in response + fill path to sld should be given
|
|
359
|
layer = new OpenLayers.Layer.WMS(
|
|
360
|
'points',
|
|
361
|
geoserverUri,
|
|
362
|
{layers: 'topp:rest_points' ,transparent:"true", format:"image/png"},
|
|
363
|
dataLayerOptions );
|
|
364
|
|
|
365
|
var sld = mapResponseObj.points_sld;
|
|
366
|
if(sld.indexOf("http://") !== 0){
|
|
367
|
// it is an old servive which is not providing the full sdl URI, so we guess it
|
|
368
|
// http://edit.africamuseum.be/synthesys/www/v1/sld/
|
|
369
|
// http://edit.br.fgov.be/synthesys/www/v1/sld/
|
|
370
|
sld = mapserverBaseUrl + "/synthesys/www/v1/sld/" + sld;
|
|
371
|
|
|
372
|
}
|
|
373
|
|
|
374
|
layer.params.SLD = sld;
|
|
375
|
map.addLayers([layer]);
|
|
376
|
|
|
377
|
} else {
|
|
378
|
// it is a response from the areas.php
|
|
379
|
for ( var i in mapResponseObj.layers) {
|
|
380
|
var layerData = mapResponseObj.layers[i];
|
|
381
|
|
|
382
|
layer = new OpenLayers.Layer.WMS(
|
|
383
|
layerData.tdwg,
|
|
384
|
mapResponseObj.geoserver + "/wms",
|
|
385
|
{layers: layerByNameMap[layerData.tdwg] ,transparent:"true", format:"image/png"},
|
|
386
|
dataLayerOptions );
|
|
387
|
layer.params.SLD = layerData.sld;
|
|
388
|
layer.setOpacity(opts.distributionOpacity);
|
|
389
|
map.addLayers([layer]);
|
|
390
|
|
|
391
|
}
|
|
392
|
|
|
393
|
}
|
|
394
|
|
|
395
|
// zoom to the required area
|
|
396
|
if(mapResponseObj.bbox !== undefined){
|
|
397
|
var newBounds = OpenLayers.Bounds.fromString( mapResponseObj.bbox );
|
|
398
|
newBounds.transform(layer.projection, map.getProjectionObject());
|
|
399
|
if(dataBounds !== null){
|
|
400
|
dataBounds.extend(newBounds);
|
|
401
|
} else if(newBounds !== undefined){
|
|
402
|
dataBounds = newBounds;
|
|
403
|
}
|
|
404
|
map.zoomToExtent(dataBounds, false);
|
|
405
|
|
|
406
|
if(map.getZoom() > opts.maxZoom){
|
|
407
|
map.zoomTo(opts.maxZoom);
|
|
408
|
} else if(map.getZoom() < opts.minZoom){
|
|
409
|
map.zoomTo(opts.minZoom);
|
|
410
|
}
|
|
411
|
}
|
|
412
|
|
|
413
|
|
|
414
|
if(opts.legendPosition !== undefined && mapResponseObj.legend !== undefined){
|
|
415
|
var legendSrcUrl = mapResponseObj.geoserver + legendImgSrc + mapResponseObj.legend;
|
|
416
|
addLegendAsElement(legendSrcUrl);
|
|
417
|
//addLegendAsLayer(legendSrcUrl, map);
|
|
418
|
}
|
|
419
|
}
|
|
420
|
|
|
421
|
};
|
|
422
|
|
|
423
|
/**
|
|
424
|
*
|
|
425
|
*/
|
|
426
|
var addLegendAsElement= function(legendSrcUrl){
|
|
427
|
|
|
428
|
mapElement.after('<div class="openlayers_legend"><img src="' + legendSrcUrl + '"></div>');
|
|
429
|
mapElement.next('.openlayers_legend').css('opacity', opts.legendOpacity).find('img').load(function () {
|
|
430
|
jQuery(this).parent()
|
|
431
|
.css('position', 'relative')
|
|
432
|
.css('z-index', '1002')
|
|
433
|
.css('top', -mapElement.height())
|
|
434
|
.css('left', mapElement.width()- jQuery(this).width())
|
|
435
|
.width(jQuery(this).width());
|
|
436
|
});
|
|
437
|
};
|
|
438
|
|
|
439
|
|
|
440
|
var addLegendAsLayer= function(legendSrcUrl, map){
|
|
441
|
var w, h;
|
|
442
|
|
|
443
|
// 1. download imge to find height and width
|
|
444
|
mapElement.after('<div class="openlayers_legend"><img src="' + legendSrcUrl + '"></div>');
|
|
445
|
mapElement.next('.openlayers_legend').css('display', 'none').css('opacity', opts.legendOpacity).find('img').load(function () {
|
|
446
|
|
|
447
|
w = mapElement.next('.openlayers_legend').find('img').width();
|
|
448
|
h = mapElement.next('.openlayers_legend').find('img').height();
|
|
449
|
mapElement.next('.openlayers_legend').remove();
|
|
450
|
|
|
451
|
// createLegendLayer();
|
|
452
|
// // 2. create the Legend Layer
|
|
453
|
//TODO createLegendLayer as inner fiinction seems like an error
|
|
454
|
// var createLegendLayer = function(){
|
|
455
|
//
|
|
456
|
//
|
|
457
|
// var legendLayerOptions={
|
|
458
|
// maxResolution: '.$maxRes.',
|
|
459
|
// maxExtent: new OpenLayers.Bounds(0, 0, w, h)
|
|
460
|
// };
|
|
461
|
//
|
|
462
|
// var legendLayer = new OpenLayers.Layer.Image(
|
|
463
|
// 'Legend',
|
|
464
|
// legendSrcUrl,
|
|
465
|
// new OpenLayers.Bounds(0, 0, w, h),
|
|
466
|
// new OpenLayers.Size(w, h),
|
|
467
|
// imageLayerOptions);
|
|
468
|
// };
|
|
469
|
});
|
|
470
|
|
|
471
|
|
|
472
|
};
|
|
473
|
|
|
474
|
/**
|
|
475
|
* merge 2 Url query strings
|
|
476
|
*/
|
|
477
|
var mergeQueryStrings = function(queryStr1, queryStr2){
|
|
478
|
if(queryStr1.charAt(queryStr1.length - 1) != '&'){
|
|
479
|
queryStr1 += '&';
|
|
480
|
}
|
|
481
|
if(queryStr2.charAt(0) == '&'){
|
|
482
|
return queryStr1 + queryStr2.substr(1);
|
|
483
|
} else {
|
|
484
|
return queryStr1 + queryStr2;
|
|
485
|
}
|
|
486
|
|
|
487
|
};
|
|
488
|
|
|
489
|
/**
|
|
490
|
*
|
|
491
|
*/
|
|
492
|
var createLayers = function( baseLayerNames, defaultBaseLayerName, customWMSBaseLayerData){
|
|
493
|
|
|
494
|
for(var i = 0; i < baseLayerNames.length; i++) {
|
|
495
|
// create the layer
|
|
496
|
if (baseLayerNames[i] == "custom_wms_base_layer_1"){
|
|
497
|
baseLayers[i] = createWMSBaseLayer(
|
|
498
|
customWMSBaseLayerData.name,
|
|
499
|
customWMSBaseLayerData.url,
|
|
500
|
customWMSBaseLayerData.params,
|
|
501
|
customWMSBaseLayerData.projection,
|
|
502
|
customWMSBaseLayerData.units,
|
|
503
|
customWMSBaseLayerData.max_extent
|
|
504
|
);
|
|
505
|
} else {
|
|
506
|
baseLayers[i] = window.CdmOpenLayers.getLayerByName(baseLayerNames[i]);
|
|
507
|
}
|
|
508
|
// set default baselayer
|
|
509
|
if(baseLayerNames[i] == defaultBaseLayerName){
|
|
510
|
defaultBaseLayer = baseLayers[i];
|
|
511
|
}
|
|
512
|
|
|
513
|
}
|
|
514
|
};
|
|
515
|
|
|
516
|
/**
|
|
517
|
* returns the intersction of the bounds b1 and b2.
|
|
518
|
* The b1 and b2 do not intersect b1 will be returned.
|
|
519
|
*
|
|
520
|
* @param OpenLayers.Bounds b1
|
|
521
|
* @param OpenLayers.Bounds b2
|
|
522
|
*
|
|
523
|
* @return the bounds of the intersection between both rectangles
|
|
524
|
*/
|
|
525
|
var intersectionOfBounds = function (b1, b2){
|
|
526
|
|
|
527
|
if(b1.intersectsBounds(b2)){
|
|
528
|
|
|
529
|
var left = Math.max(b1.left, b2.left);
|
|
530
|
var bottom = Math.max(b1.bottom, b2.bottom);
|
|
531
|
var right = Math.min(b1.right, b2.right);
|
|
532
|
var top = Math.min(b1.top, b2.top);
|
|
533
|
|
|
534
|
return new OpenLayers.Bounds(left, bottom, right, top);
|
|
535
|
|
|
536
|
} else {
|
|
537
|
return b1;
|
|
538
|
}
|
|
539
|
};
|
|
540
|
|
|
541
|
/**
|
|
542
|
*
|
|
543
|
* @param OpenLayers.Bounds b
|
|
544
|
* @param float aspectRatio width/height
|
|
545
|
*
|
|
546
|
* @return the bounds croped to the given aspectRatio
|
|
547
|
*/
|
|
548
|
var cropBoundsToAspectRatio = function (b, aspectRatio){
|
|
549
|
|
|
550
|
var cropedB = b.clone();
|
|
551
|
|
|
552
|
if(aspectRatio == 1){
|
|
553
|
return cropedB;
|
|
554
|
}
|
|
555
|
|
|
556
|
/*
|
|
557
|
* LonLat:
|
|
558
|
* lon {Float} The x-axis coodinate in map units
|
|
559
|
* lat {Float} The y-axis coordinate in map units
|
|
560
|
*/
|
|
561
|
var center = cropedB.getCenterLonLat();
|
|
562
|
if(aspectRatio < 1){
|
|
563
|
var dist = (b.getHeight() / 2) * aspectRatio;
|
|
564
|
cropedB.top = center.lat + dist;
|
|
565
|
cropedB.cropedBottom = center.lat - dist;
|
|
566
|
} else if(aspectRatio > 1){
|
|
567
|
var dist = (b.getWidth() / 2) / aspectRatio;
|
|
568
|
cropedB.left = center.lon - dist;
|
|
569
|
cropedB.right = center.lon + dist;
|
|
570
|
}
|
|
571
|
return cropedB;
|
|
572
|
};
|
|
573
|
|
|
574
|
/**
|
|
575
|
* returns the zoom to bounds.
|
|
576
|
*
|
|
577
|
* @param bboxString
|
|
578
|
* a string representation of the bounds in degree
|
|
579
|
* @param layer
|
|
580
|
* the Openlayers.Layer
|
|
581
|
*
|
|
582
|
* @return the bboxstring projected onto the layer and intersected with the maximum extent of the layer
|
|
583
|
*/
|
|
584
|
var zoomToBoundsFor = function(bboxString, layer){
|
|
585
|
var zoomToBounds;
|
|
586
|
if(typeof bboxString == 'string' && bboxString.length > 6) {
|
|
587
|
zoomToBounds = OpenLayers.Bounds.fromString(bboxString);
|
|
588
|
// transform bounding box given in degree values to the projection of the base layer
|
|
589
|
zoomToBounds.transform(CdmOpenLayers.projections.epsg_4326, layer.projection);
|
|
590
|
} else if(layer.maxExtent) {
|
|
591
|
zoomToBounds = layer.maxExtent;
|
|
592
|
// no need to transform since the bounds are obtained from the layer
|
|
593
|
} else {
|
|
594
|
zoomToBounds = new OpenLayers.Bounds(-180, -90, 180, 90);
|
|
595
|
// transform bounding box given in degree values to the projection of the base layer
|
|
596
|
zoomToBounds.transform(CdmOpenLayers.projections.epsg_4326, layer.projection);
|
|
597
|
}
|
|
598
|
|
|
599
|
zoomToBounds = intersectionOfBounds(layer.maxExtent, zoomToBounds);
|
|
600
|
|
|
601
|
return zoomToBounds;
|
|
602
|
};
|
|
603
|
|
|
604
|
|
|
605
|
|
|
606
|
/**
|
|
607
|
* returns the version number contained in the version string:
|
|
608
|
* v1.1 --> 1.1
|
|
609
|
* v1.2_dev --> 1.2
|
|
610
|
*/
|
|
611
|
var mapServerVersionNumber = function() {
|
|
612
|
var pattern = /v([\d\.]+).*$/;
|
|
613
|
var result;
|
|
614
|
if (result = mapserverVersion.match(pattern) !== null) {
|
|
615
|
return result[0];
|
|
616
|
} else {
|
|
617
|
return null;
|
|
618
|
}
|
|
619
|
};
|
|
620
|
|
|
621
|
/**
|
|
622
|
* Creates a WMS Base layer
|
|
623
|
* @param String name
|
|
624
|
* A name for the layer
|
|
625
|
* @param String url
|
|
626
|
* Base url for the WMS (e.g. http://wms.jpl.nasa.gov/wms.cgi)
|
|
627
|
* @param Object params
|
|
628
|
* An object with key/value pairs representing the GetMap query string parameters and parameter values.
|
|
629
|
* @param Object projection
|
|
630
|
* A OpenLayers.Projection object
|
|
631
|
*/
|
|
632
|
var createWMSBaseLayer= function(name, url, params, projection, units, maxExtent){
|
|
633
|
|
|
634
|
if(maxExtent == null){
|
|
635
|
maxExtent = CdmOpenLayers.mapExtends.epsg_4326.clone();
|
|
636
|
maxExtent.transform(CdmOpenLayers.projections.epsg_4326, projection);
|
|
637
|
}
|
|
638
|
|
|
639
|
return new OpenLayers.Layer.WMS(
|
|
640
|
name,
|
|
641
|
url,
|
|
642
|
params,
|
|
643
|
{
|
|
644
|
maxExtent: maxExtent,
|
|
645
|
projection: projection,
|
|
646
|
units: units,
|
|
647
|
isBaseLayer: true,
|
|
648
|
displayInLayerSwitcher: true
|
|
649
|
}
|
|
650
|
);
|
|
651
|
};
|
|
652
|
|
|
653
|
}; // end of CdmOpenLayers.Map
|
|
654
|
})();
|
|
655
|
|
|
656
|
|
|
657
|
|
|
658
|
|
|
659
|
|
|
660
|
|