wrmap.js

   1 "use strict";
   2
   3 function init_wrmap(i, jq_map) {
   4         // define constants
   5         var EPSG4326 = new OpenLayers.Projection("EPSG:4326"); // lon/lat
   6         var EPSG3857 = new OpenLayers.Projection("EPSG:3857"); // google
   7
   8         // extract geojson from map element and clear map element's content
   9         jq_map = $(jq_map);
  10         OpenLayers.ImgPath = jq_map.attr('data-img-path'); // e.g. "/mediawiki/extensions/wrmap/openlayers/img/"
  11         var json_string = jq_map.text();
  12         jq_map.empty(); // once parsed, remove geojson string from the map element.
  13         var format_json = new OpenLayers.Format.JSON();
  14         var json_js = format_json.read(json_string);
  15         var format_geojson = new OpenLayers.Format.GeoJSON();
  16         var features_all = format_geojson.read(json_js);
  17
  18         // extract, tranform and split features to layers
  19         var features_path = new Array();
  20         var features_point = new Array();
  21         for (var i = 0; i != features_all.length; ++i) {
  22                 var feature = features_all[i];
  23                 feature.geometry.transform(EPSG4326, EPSG3857);
  24                 if (feature.geometry instanceof OpenLayers.Geometry.Point) features_point.push(feature);
  25                 else features_path.push(feature);
  26         }
  27
  28
  29         // background layer
  30         // ----------------
  31         var layer_map = new OpenLayers.Layer.Google("Google Physical", {
  32                 type: google.maps.MapTypeId.TERRAIN
  33         });
  34
  35         // // Alternative: OSM map
  36         // var layer_map = new OpenLayers.Layer.OSM();
  37
  38         // // Alternative: Microsoft Bing Maps
  39         // var layer_map = new OpenLayers.Layer.Bing({
  40         //     type: "Road",
  41         //     key: "AgPH3SlIXAwajrJKf0FORQyhTqsP8KIlvtN6RKfvxe6fOB6q6-HFmg8EOFm7LSOA"});
  42
  43         // // Alternative: Dummy base layer
  44         // var layer_map = new OpenLayers.Layer.Vector("Base Layer", {
  45         //     isBaseLayer: true});
  46
  47
  48         // path layer
  49         // ----------
  50         var layer_path = new OpenLayers.Layer.Vector("Path", {
  51                 styleMap: new OpenLayers.StyleMap(new OpenLayers.Style({
  52                                 strokeColor: '${getStrokeColor}',
  53                                 strokeWidth: '${getStrokeWidth}'
  54                         }, {
  55                                 context: {
  56                                         getStrokeColor: function(feature) {
  57                                                 if (feature.attributes.strokeColor !== undefined) return feature.attributes.strokeColor;
  58                                                 if (feature.attributes.type == 'rodelbahn') return '#014e9a';
  59                                                 if (feature.attributes.type == 'gehweg') return '#e98401';
  60                                                 if (feature.attributes.type == 'alternative') return '#7f7fff';
  61                                                 if (feature.attributes.type == 'lift') return '#000000';
  62                                                 if (feature.attributes.type == 'anfahrt') return '#e1e100';
  63                                                 return '#ee9900';
  64                                         },
  65                                         getStrokeWidth: function(feature) {
  66                                                 if (feature.attributes.strokeWidth !== undefined) return feature.attributes.strokeWidth;
  67                                                 if (feature.attributes.type == 'lift' || feature.attributes.type == 'anfahrt') return 3;
  68                                                 return 6;
  69                                         }
  70                                 }
  71                         }))
  72         });
  73
  74
  75         // point layer
  76         // -----------
  77         var filter_point_sledrun = new OpenLayers.Filter.Comparison({
  78                 type: OpenLayers.Filter.Comparison.EQUAL_TO,
  79                 property: 'type',
  80                 value: 'sledrun'
  81         });
  82
  83         var layer_point = new OpenLayers.Layer.Vector("Point", {
  84                 styleMap: new OpenLayers.StyleMap({
  85                         'default': new OpenLayers.Style({
  86                                         graphicZIndex: 12,
  87                                         backgroundGraphicZIndex: 11,
  88                                 }, {
  89                                         context: {
  90                                                 // the following context functions should only be available in the rule that uses them,
  91                                                 // but the rule dependent contexts are ignored by OpenLayers (I think that's a bug)
  92                                                 getCondition: function(feature) {
  93                                                         if (feature.condition === undefined) return 0;
  94                                                         return feature.condition;
  95                                                 },
  96                                                 getSymbol: function(feature) {
  97                                                         var name = feature.attributes.type;
  98                                                         return name;
  99                                                 }
 100                                         },
 101                                         rules: [
 102                                                 new OpenLayers.Rule({
 103                                                         filter: filter_point_sledrun,
 104                                                         symbolizer: {
 105                                                                 externalGraphic: '/vorlagen/bahnzustand${getCondition}_0.png',
 106                                                                 graphicWidth: 17,
 107                                                                 graphicHeight: 17,
 108                                                                 graphicXOffset: -8,
 109                                                                 graphicYOffset: -8,
 110                                                                 backgroundGraphic: "/vorlagen/gmap_rodelbahn_c_s.png",
 111                                                                 backgroundWidth: 23,
 112                                                                 backgroundHeight: 23,
 113                                                                 backgroundXOffset: -8,
 114                                                                 backgroundYOffset: -8,
 115                                                         }
 116                                                 }),
 117                                                 new OpenLayers.Rule({
 118                                                         elseFilter: true,
 119                                                         symbolizer: {
 120                                                                 externalGraphic: '/vorlagen/gmap_${getSymbol}.png',
 121                                                                 graphicWidth: 20,
 122                                                                 graphicHeight: 34,
 123                                                                 graphicXOffset: -10,
 124                                                                 graphicYOffset: -33,
 125                                                         }
 126                                                 })
 127                                         ]
 128                                 }),
 129                         highlight: new OpenLayers.Style({
 130                                         label: "${getTitle}",
 131                                         labelOutlineColor: "white",
 132                                         fontWeight: "bold"
 133                                 }, {
 134                                         context: {
 135                                                 getTitle: function(feature) {
 136                                                         var title = '';
 137                                                         if (feature.attributes.type != 'point') {
 138                                                                 title = feature.attributes.type;
 139                                                                 title = title.charAt(0).toUpperCase() + title.slice(1); // First letter uppercase
 140                                                                 if (feature.attributes.name !== undefined) title += ': ';
 141                                                         }
 142                                                         if (feature.attributes.name !== undefined) title += feature.attributes.name;
 143                                                         return title;
 144                                                 }
 145                                         },
 146                                         rules: [
 147                                                 new OpenLayers.Rule({
 148                                                         filter: filter_point_sledrun,
 149                                                         symbolizer: {
 150                                                                 label: "${name}",
 151                                                                 labelYOffset: 14
 152                                                         }
 153                                                 }),
 154                                                 new OpenLayers.Rule({
 155                                                         elseFilter: true,
 156                                                         symbolizer: {
 157                                                                 labelYOffset: 40
 158                                                         }
 159                                                 })
 160                                         ]
 161                                 })
 162                 }),
 163                 rendererOptions: {yOrdering: true}
 164         });
 165
 166
 167         // map itself
 168         // ----------
 169         var lon = json_js.properties.lon;
 170         var lat = json_js.properties.lat;
 171         var zoom = json_js.properties.zoom;
 172         var width = json_js.properties.width;
 173         var height = json_js.properties.height;
 174         if (zoom === undefined) zoom = 10; // default zoom
 175         if (width === undefined) width = '100%'; // default width
 176         if (height === undefined) height = 450;  // default: 450 pixel
 177         jq_map.width(width);
 178         jq_map.height(height);
 179         var map = new OpenLayers.Map(jq_map.context, {
 180                 projection: EPSG3857,
 181                 displayProjection: EPSG4326,
 182                 units: "m",
 183                 theme: null,
 184                 layers: [layer_map, layer_path, layer_point],
 185                 center: new OpenLayers.LonLat(lon, lat).transform(EPSG4326, EPSG3857),
 186                 zoom: zoom
 187         });
 188
 189
 190         // add features
 191         // if this would be done before the layer is added to the map, the features are not added
 192         layer_path.addFeatures(features_path);
 193         layer_point.addFeatures(features_point);
 194
 195         // disable mouse wheel zoom
 196         var navigation_control = map.getControlsByClass('OpenLayers.Control.Navigation')[0];
 197         navigation_control.disableZoomWheel();
 198
 199         // layer switcher
 200         // map.addControl(new OpenLayers.Control.LayerSwitcher());
 201
 202         // print sledrun name when mouse moves over it
 203         map.addControl(new OpenLayers.Control.SelectFeature(layer_point, {
 204                 hover: true,
 205                 highlightOnly: true,
 206                 autoActivate: true,
 207                 renderIntent: "highlight"
 208         }));
 209
 210         // show popup when user clicks on a sledrun icon
 211         map.addControl(new OpenLayers.Control.SelectFeature(layer_point, {
 212                 autoActivate: true,
 213                 toggle: true,
 214                 onSelect: function(feature) {
 215                         var popup_text = '';
 216                         if (feature.attributes.type == 'sledrun') {
 217                                 popup_text += "<h2>" + feature.attributes.name + '</h2>\n' +
 218                                 '<ul>\n' +
 219                                 '<li><a href="' + feature.attributes.wiki + '">Details zur Rodelbahn</a></li>\n' +
 220                                 '<li>Rodelbahnzustand<br/>';
 221                                 if (feature.attributes.condition !== undefined) {
 222                                         var condition_text = {1: 'Sehr gut', 2: 'Gut', 3: 'Mittelm&auml;&szlig;ig', 4: 'Schlecht', 5: 'Geht nicht'};
 223                                         var year_month_day = feature.attributes.date_report.split('-');
 224                                         popup_text += '<a href="' + feature.attributes.wiki + '#Eintr.C3.A4ge">' + condition_text[feature.attributes.condition] + '</a> ' +
 225                                         '<small>' + year_month_day[2] + '.' + year_month_day[1] + '.</small> ' +
 226                                         '<em><a href="' + feature.attributes.wiki + '#Eintragen">Neu</a></em>';
 227                                 } else {
 228                                         popup_text += '<em><a href="' + feature.attributes.wiki + '#Eintragen">Bitte eintragen</a></em>';
 229                                 }
 230                                 popup_text += '</li>\n</ul>\n';
 231                         } else if (feature.attributes.wiki !== undefined) {
 232                                 if (feature.attributes.name != undefined) popup_text += '<h2>' + feature.attributes.name + '</h2>\n';
 233                                 popup_text += '<p><a href="' + feature.attributes.wiki + '">Details</a></p>\n';
 234                         } else return;
 235
 236                         // Open popup
 237                         var selectFeatureControl = this;
 238                         var popup = new OpenLayers.Popup.FramedCloud('sledruninfopopup_' + feature.attributes.wiki,
 239                         feature.geometry.getBounds().getCenterLonLat(),
 240                         null,
 241                         popup_text,
 242                         null, true, function(event) {
 243                                 // onPopupClose
 244                                 selectFeatureControl.unselectAll();
 245                         });
 246                         feature.popup = popup;
 247                         map.addPopup(popup);
 248                 },
 249                 onUnselect: function(feature) {
 250                         if (feature.popup === null) return;
 251
 252                         // Close popup
 253                         map.removePopup(feature.popup);
 254                         feature.popup.destroy();
 255                         feature.popup = null;
 256                 }
 257         }));
 258 }
 259
 260
 261 function init_wrmaps() {
 262         var jq_maps = $('.wrmap'); // all wrmap <div> elements
 263         jq_maps.each(init_wrmap);
 264 }
 265
 266
 267 $(document).ready(init_wrmaps);
 268