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[rails.git] / public / javascripts / map.js

diff --git a/public/javascripts/map.js b/public/javascripts/map.js
index 3e6d687b0faac740c10d212c637e4ca9870af9e4..c63461fe203be6c6559464f2c06f649e935ada0d 100644 (file)
--- a/public/javascripts/map.js
+++ b/public/javascripts/map.js
@@ -1,6 +1,7 @@
 var epsg4326 = new OpenLayers.Projection("EPSG:4326");
 var map;
 var markers;
 var epsg4326 = new OpenLayers.Projection("EPSG:4326");
 var map;
 var markers;

+var vectors;

 var popup;
 
 var nonamekeys = {
 var popup;
 
 var nonamekeys = {


@@ -13,7 +14,9 @@ var nonamekeys = {
 };
 
 OpenLayers._getScriptLocation = function () {
 };
 
 OpenLayers._getScriptLocation = function () {

-   return "openlayers/";
+  // Should really have this file as an erb, so that this can return 
+  // the real rails root
+   return "/openlayers/";

 }
 
 function createMap(divName, options) {
 }
 
 function createMap(divName, options) {


@@ -30,7 +33,8 @@ function createMap(divName, options) {
       ],
       units: "m",
       maxResolution: 156543.0339,
       ],
       units: "m",
       maxResolution: 156543.0339,

-      numZoomLevels: 20
+      numZoomLevels: 20,
+      displayProjection: new OpenLayers.Projection("EPSG:4326")

    });
 
    var mapnik = new OpenLayers.Layer.OSM.Mapnik("Mapnik", {
    });
 
    var mapnik = new OpenLayers.Layer.OSM.Mapnik("Mapnik", {


@@ -53,9 +57,9 @@ function createMap(divName, options) {
 
    var nonamekey = nonamekeys[document.domain];
    var noname = new OpenLayers.Layer.OSM("NoName", [
 
    var nonamekey = nonamekeys[document.domain];
    var noname = new OpenLayers.Layer.OSM("NoName", [

-      "http://a.tile.cloudmade.com/" + nonamekey + "/3/256/",
-      "http://b.tile.cloudmade.com/" + nonamekey + "/3/256/",
-      "http://c.tile.cloudmade.com/" + nonamekey + "/3/256/"
+      "http://a.tile.cloudmade.com/" + nonamekey + "/3/256/${z}/${x}/${y}.png",
+      "http://b.tile.cloudmade.com/" + nonamekey + "/3/256/${z}/${x}/${y}.png",
+      "http://c.tile.cloudmade.com/" + nonamekey + "/3/256/${z}/${x}/${y}.png"

    ], {
       displayOutsideMaxExtent: true,
       wrapDateLine: true,
    ], {
       displayOutsideMaxExtent: true,
       wrapDateLine: true,


@@ -70,6 +74,7 @@ function createMap(divName, options) {
    map.addLayer(maplint);
 
    var numZoomLevels = Math.max(mapnik.numZoomLevels, osmarender.numZoomLevels);
    map.addLayer(maplint);
 
    var numZoomLevels = Math.max(mapnik.numZoomLevels, osmarender.numZoomLevels);

+

    markers = new OpenLayers.Layer.Markers("Markers", {
       displayInLayerSwitcher: false,
       numZoomLevels: numZoomLevels,
    markers = new OpenLayers.Layer.Markers("Markers", {
       displayInLayerSwitcher: false,
       numZoomLevels: numZoomLevels,


@@ -103,6 +108,62 @@ function addMarkerToMap(position, icon, description) {
    return marker;
 }
 
    return marker;
 }
 

+function addObjectToMap(url, zoom, callback) {
+   var layer = new OpenLayers.Layer.GML("Objects", url, {
+      format: OpenLayers.Format.OSM,
+      projection: new OpenLayers.Projection("EPSG:4326"),
+      displayInLayerSwitcher: false
+   });
+
+   layer.events.register("loadend", layer, function() {
+      var extent;
+
+      if (this.features.length) {
+         extent = this.features[0].geometry.getBounds();
+
+         for (var i = 1; i < this.features.length; i++) {
+            extent.extend(this.features[i].geometry.getBounds());
+         }
+
+         if (zoom) {
+            if (extent) {
+               this.map.zoomToExtent(extent);
+            } else {
+               this.map.zoomToMaxExtent();
+            }
+         }
+      }
+
+      if (callback) {
+         callback(extent);
+      }
+   });
+  
+   map.addLayer(layer);
+
+   layer.loadGML();
+}
+
+function addBoxToMap(boxbounds) {
+   if(!vectors) {
+     // Be aware that IE requires Vector layers be initialised on page load, and not under deferred script conditions
+     vectors = new OpenLayers.Layer.Vector("Box Layer", {
+        displayInLayerSwitcher: false
+     });
+     map.addLayer(vectors);
+   }
+   var geometry = boxbounds.toGeometry().transform(epsg4326, map.getProjectionObject());
+   var box = new OpenLayers.Feature.Vector(geometry, {}, {
+      strokeWidth: 2,
+      strokeColor: '#ee9900',
+      fillOpacity: 0
+   });
+   
+   vectors.addFeatures(box);
+
+   return box;
+}
+

 function openMapPopup(marker, description) {
    closeMapPopup();
 
 function openMapPopup(marker, description) {
    closeMapPopup();
 


@@ -126,11 +187,18 @@ function removeMarkerFromMap(marker){
    markers.removeMarker(marker);
 }
 
    markers.removeMarker(marker);
 }
 

+function removeBoxFromMap(box){
+   vectors.removeFeature(box);
+}
+

 function getMapCenter(center, zoom) {
    return map.getCenter().clone().transform(map.getProjectionObject(), epsg4326);
 }
 
 function setMapCenter(center, zoom) {
 function getMapCenter(center, zoom) {
    return map.getCenter().clone().transform(map.getProjectionObject(), epsg4326);
 }
 
 function setMapCenter(center, zoom) {

+   zoom = parseInt(zoom);
+   var numzoom = map.getNumZoomLevels();
+   if (zoom >= numzoom) zoom = numzoom - 1;

    map.setCenter(center.clone().transform(epsg4326, map.getProjectionObject()), zoom);
 }
 
    map.setCenter(center.clone().transform(epsg4326, map.getProjectionObject()), zoom);
 }
 


@@ -138,7 +206,7 @@ function setMapExtent(extent) {
    map.zoomToExtent(extent.clone().transform(epsg4326, map.getProjectionObject()));
 }
 
    map.zoomToExtent(extent.clone().transform(epsg4326, map.getProjectionObject()));
 }
 

-function getMapExtent(extent) {
+function getMapExtent() {

    return map.getExtent().clone().transform(map.getProjectionObject(), epsg4326);
 }
 
    return map.getExtent().clone().transform(map.getProjectionObject(), epsg4326);
 }