Factor out javascript code to support OpenLayers maps into a common file
that is shared by both the (current) pages that display maps.
This commit is contained in:
Tom Hughes
parent
9ec1b1bea5
commit
9619dfdb4b
4 changed files with 172 additions and 211 deletions
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@ -7,10 +7,6 @@
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<% lon = params['mlon'] %>
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<% lat = params['mlat'] %>
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<% zoom = params['zoom'] || '12' %>
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<script type="text/javascript">
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var mlat = <%= lat %>;
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var mlon = <%= lon %>;
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</script>
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<% elsif @user and params['lon'].nil? and params['lat'].nil? %>
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<% lon = @user.home_lon %>
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<% lat = @user.home_lat %>
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@ -21,89 +17,42 @@
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<% zoom = params['zoom'] || '4' %>
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<% end %>
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<script type="text/javascript">
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var lat = <%= lat %>;
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var lon = <%= lon %>;
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var zoom = <%= zoom %>;
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var PI = 3.14159265358979323846;
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<% if params['scale'] and params['scale'].length > 0 then %>
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zoom = Math.log(360.0/(( <% print params['scale'].to_f() %> ) * 512.0)) / Math.log(2.0);
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<% end %>
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zoom = zoom;
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lon = lon * 20037508.34 / 180;
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lat = Math.log(Math.tan( (90 + lat) * PI / 360)) / (PI / 180);
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lat = lat * 20037508.34 / 180;
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<% if marker %>
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mlon = mlon * 20037508.34 / 180;
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mlat = Math.log(Math.tan( (90 + mlat) * PI / 360)) / (PI / 180);
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mlat = mlat * 20037508.34 / 180;
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<%end%>
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</script>
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<script type="text/javascript" src="/openlayers/OpenLayers.js"></script>
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<%= javascript_include_tag '/openlayers/OpenLayers.js' %>
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<%= javascript_include_tag 'map.js' %>
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<script type="text/javascript">
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<!--
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var map, layer, markers;
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var ie6 = ! ( window.addEventListener || window.XMLHttpRequest );
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var map;
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function init(){
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var centre = lonLatToMercator(new OpenLayers.LonLat(<%= lon %>, <%= lat %>));
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var zoom = <%= zoom %>;
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OpenLayers.Util.onImageLoadError = function() {
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this.src = OpenLayers.Util.getImagesLocation() + "404.png";
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}
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map = new OpenLayers.Map( "map",
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{maxExtent: new OpenLayers.Bounds(-20037508.34,-20037508.34,20037508.34,20037508.34), numZoomLevels:19, maxResolution:156543, units:'m', projection: "EPSG:41001"} );
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layer = new OpenLayers.Layer.TMS( "Mapnik", "http://tile.openstreetmap.org/", {type:'png', getURL:getTileURL} );
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map.addLayer(layer);
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layer = new OpenLayers.Layer.TMS( "Osmarender", "http://dev.openstreetmap.org/~ojw/Tiles/tile.php/", {type:'png', getURL:getTileURL} );
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map.addLayer(layer);
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//Marker stuff
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<% if marker %>
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markers = new OpenLayers.Layer.Markers("markers");
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map.addLayer(markers);
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marker = new OpenLayers.Marker(new OpenLayers.LonLat(mlon,mlat));
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markers.addMarker(marker);
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<% if params['scale'] and params['scale'].length > 0 then %>
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zoom = scaleToZoom(<%= params['scale'].to_f() %>);
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<% end %>
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map.setOptions({theme:''});
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map.addControl(new OpenLayers.Control.LayerSwitcher());
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map.setCenter(new OpenLayers.LonLat(lon, lat), zoom);
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var map = createMap("map", centre, zoom);
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<% if marker %>
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addMarkerToMap(lonLatToMercator(new OpenLayers.LonLat(<%= mlon %>, <%= mlat %>)));
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<% end %>
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map.events.register("moveend", map, updateLocation);
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updateLocation();
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document.getElementById('map_OpenLayers_ViewPort').style.position = 'absolute';
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if ( ie6 ) {
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handleResize();
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}
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updateLocation();
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}
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function getTileURL( bounds ) {
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var res = this.map.getResolution();
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var x = Math.round ((bounds.left - this.maxExtent.left) / (res * this.tileSize.w));
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var y = Math.round ((this.maxExtent.top - bounds.top) / (res * this.tileSize.h));
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var z = this.map.getZoom();
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return this.url + z + "/" + x + "/" + y + "." + this.type;
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}
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function updateLocation() {
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var lonlat = map.getCenter();
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var lon_deg = (lonlat.lon / 20037508.34) * 180;
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var lat_deg = (lonlat.lat / 20037508.34) * 180;
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var PI = 3.14159265358979323846;
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lat_deg = 180/PI * (2 * Math.atan(Math.exp(lat_deg * PI / 180)) - PI / 2);
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var lonlat = mercatorToLonLat(map.getCenter());
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var zoom = map.getZoom();
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updatelinks(lon_deg,lat_deg,zoom);
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updatelinks(lonlat.lon, lonlat.lat, zoom);
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}
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function getStyle( el, property ) {
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@ -169,6 +118,7 @@
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if ( ie6 ) {
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window.onresize = handleResize;
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}
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window.onload = init;
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// -->
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</script>
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@ -43,158 +43,63 @@
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<% lon = @user.home_lon %>
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<% lat = @user.home_lat %>
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<% zoom = '12' %>
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<script type="text/javascript">
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var mlat = <%= mlat %>;
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var mlon = <%= mlon %>;
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</script>
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<% else %>
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<% lon = params['lon'] || '-0.1' %>
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<% lat = params['lat'] || '51.5' %>
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<% zoom = params['zoom'] || '4' %>
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<% end %>
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<script type="text/javascript">
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var lat = <%= lat %>;
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var lon = <%= lon %>;
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var zoom = <%= zoom %>;
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var PI = 3.14159265358979323846;
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<% if params['scale'] and params['scale'].length > 0 then %>
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zoom = Math.log(360.0/(( <% print params['scale'].to_f() %> ) * 512.0)) / Math.log(2.0);
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<% end %>
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zoom = zoom;
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lon = lon * 20037508.34 / 180;
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lat = Math.log(Math.tan( (90 + lat) * PI / 360)) / (PI / 180);
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lat = lat * 20037508.34 / 180;
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<% if marker %>
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mlon = mlon * 20037508.34 / 180;
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mlat = Math.log(Math.tan( (90 + mlat) * PI / 360)) / (PI / 180);
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mlat = mlat * 20037508.34 / 180;
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<%end%>
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</script>
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<script type="text/javascript" src="/openlayers/OpenLayers.js"></script>
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<%= javascript_include_tag '/openlayers/OpenLayers.js' %>
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<%= javascript_include_tag 'map.js' %>
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<script type="text/javascript">
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<!--
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var map, layer, markers, marker, popup;
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function mercator2lonlat( merc ) {
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var lon_deg = (merc.lon / 20037508.34) * 180;
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var lat_deg = (merc.lat / 20037508.34) * 180;
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var PI = 3.14159265358979323846;
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lat_deg = 180/PI * (2 * Math.atan(Math.exp(lat_deg * PI / 180)) - PI / 2);
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return new OpenLayers.LonLat(lon_deg,lat_deg);
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}
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function lonlat2mercator( ll ) {
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var lon = ll.lon * 20037508.34 / 180;
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var lat = Math.log(Math.tan( (90 + ll.lat) * PI / 360)) / (PI / 180);
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lat = lat * 20037508.34 / 180;
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return new OpenLayers.LonLat(lon,lat);
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}
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var marker;
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function init(){
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var centre = lonLatToMercator(new OpenLayers.LonLat(<%= lon %>, <%= lat %>));
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var zoom = <%= zoom %>;
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OpenLayers.Util.onImageLoadError = function() {
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this.src = OpenLayers.Util.getImagesLocation() + "404.png";
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}
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map = new OpenLayers.Map( "map",
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{maxExtent: new OpenLayers.Bounds(-20037508.34,-20037508.34,20037508.34,20037508.34), maxZoomLevel:18, maxResolution:156543, units:'m', projection: "EPSG:41001"} );
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layer = new OpenLayers.Layer.TMS( "Mapnik", "http://tile.openstreetmap.org/", {type:'png', getURL:getTileURL} );
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map.addLayer(layer);
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layer = new OpenLayers.Layer.TMS( "Osmarender", "http://dev.openstreetmap.org/~ojw/Tiles/tile.php/", {type:'png', getURL:getTileURL} );
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map.addLayer(layer);
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<% if params['scale'] and params['scale'].length > 0 then %>
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zoom = scaleToZoom(<%= params['scale'].to_f() %>);
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<% end %>
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//Marker stuff
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markers = new OpenLayers.Layer.Markers("markers");
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map.addLayer(markers);
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var map = createMap("map", centre, zoom);
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<% if marker %>
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marker = new OpenLayers.Marker(new OpenLayers.LonLat(mlon,mlat));
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marker.events.register("click", "marker", markerOnClick );
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markers.addMarker(marker);
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marker = addMarkerToMap(lonLatToMercator(new OpenLayers.LonLat(<%= mlon %>, <%= mlat %>)), null, "Your location");
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<% end %>
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var near_icon = OpenLayers.Marker.defaultIcon();
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near_icon.url = OpenLayers.Util.getImagesLocation() + "marker-green.png";;
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var i = nearest.length;
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while( i-- ) {
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var nearmarker = new OpenLayers.Marker( lonlat2mercator( new OpenLayers.LonLat( nearest[i].home_lon, nearest[i].home_lat ) ), near_icon.clone() );
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markers.addMarker( nearmarker );
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nearmarker.events.register("click", "nearmarker", makeMarkerFunction( i ) );
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var description = 'Nearby mapper: <a href="/user/'+nearest[i].display_name+'">'+nearest[i].display_name+'</a>'
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var nearmarker = addMarkerToMap(lonLatToMercator(new OpenLayers.LonLat(nearest[i].home_lon, nearest[i].home_lat)), near_icon.clone(), description);
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}
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map.addControl(new OpenLayers.Control.LayerSwitcher());
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map.setCenter(new OpenLayers.LonLat(lon, lat), zoom);
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map.events.register("click", map, setHome);
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}
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function getTileURL( bounds ) {
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var res = this.map.getResolution();
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var x = Math.round ((bounds.left - this.maxExtent.left) / (res * this.tileSize.w));
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var y = Math.round ((this.maxExtent.top - bounds.top) / (res * this.tileSize.h));
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var z = this.map.getZoom();
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return this.url + z + "/" + x + "/" + y + "." + this.type;
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}
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function makeMarkerFunction( i ) {
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return function() { markerOnClick( i ); };
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}
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function markerOnClick( i ) {
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var html, position;
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if( typeof( i ) == 'number' ) {
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html = '<p>Nearby mapper: <a href="/user/'+nearest[i].display_name+'">'+nearest[i].display_name+'</a></p>';
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html += '<p style="text-align:right">(<a href="#" onclick="return closePopup();">close</a>)</p>';
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position = lonlat2mercator( new OpenLayers.LonLat( nearest[i].home_lon, nearest[i].home_lat ) );
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} else {
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html = '<p>Your location (<a href="#" onclick="return closePopup()">close</a>)</p>';
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position = new OpenLayers.LonLat(mlon,mlat);
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}
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var box = document.getElementById( 'highlightinfo' );
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box.innerHTML = html;
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closePopup();
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popup = new OpenLayers.Popup.AnchoredBubble( 'popup', position, new OpenLayers.Size( box.offsetWidth, box.offsetHeight ), html, OpenLayers.Marker.defaultIcon(), true );
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map.addPopup( popup );
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}
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function closePopup() {
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if( popup ) {
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map.removePopup( popup );
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delete popup;
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}
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return false;
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}
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function setHome( e ) {
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closePopup();
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if( ! document.getElementById( 'updatehome' ).checked )
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return;
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var lonlat = map.getLonLatFromViewPortPx(e.xy)
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closeMapPopup();
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if (document.getElementById('updatehome').checked) {
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var merc = map.getLonLatFromViewPortPx(e.xy);
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var lonlat = mercatorToLonLat(merc);
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document.getElementById('homerow').className = '';
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document.getElementById('home_lat').value = lonlat.lat;
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document.getElementById('home_lon').value = lonlat.lon;
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var lon_deg = (lonlat.lon / 20037508.34) * 180;
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var lat_deg = (lonlat.lat / 20037508.34) * 180;
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var PI = 3.14159265358979323846;
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lat_deg = 180/PI * (2 * Math.atan(Math.exp(lat_deg * PI / 180)) - PI / 2);
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var homerow = document.getElementById( 'homerow' );
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var home_lat = document.getElementById( 'home_lat' );
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var home_lon = document.getElementById( 'home_lon' );
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homerow.className = '';
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home_lat.value = lat_deg;
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home_lon.value = lon_deg;
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if (marker) {
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markers.removeMarker(marker);
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removeMarkerFromMap(marker);
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}
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marker = new OpenLayers.Marker(lonlat);
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markers.addMarker(marker);
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marker = addMarkerToMap(merc, null, "Your location");
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}
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}
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window.onload = init;
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// -->
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</script>
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110
public/javascripts/map.js
Normal file
110
public/javascripts/map.js
Normal file
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@ -0,0 +1,110 @@
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var map;
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var markers;
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var popup;
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function createMap(divName, centre, zoom) {
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OpenLayers.Util.onImageLoadError = function() {
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this.src = OpenLayers.Util.getImagesLocation() + "404.png";
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}
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map = new OpenLayers.Map(divName,
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{ maxExtent: new OpenLayers.Bounds(-20037508.34,-20037508.34,20037508.34,20037508.34),
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numZoomLevels: 19,
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maxResolution: 156543,
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units: 'm',
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projection: "EPSG:41001" });
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var mapnik = new OpenLayers.Layer.TMS("Mapnik",
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"http://tile.openstreetmap.org/",
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{ type: 'png', getURL: getTileURL });
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map.addLayer(mapnik);
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var osmarender = new OpenLayers.Layer.TMS("Osmarender",
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"http://dev.openstreetmap.org/~ojw/Tiles/tile.php/",
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{ type: 'png', getURL: getTileURL });
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map.addLayer(osmarender);
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map.addControl(new OpenLayers.Control.LayerSwitcher());
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map.setCenter(centre, zoom);
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return map;
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}
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function getTileURL(bounds) {
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var res = this.map.getResolution();
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var x = Math.round((bounds.left - this.maxExtent.left) / (res * this.tileSize.w));
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var y = Math.round((this.maxExtent.top - bounds.top) / (res * this.tileSize.h));
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var z = this.map.getZoom();
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return this.url + z + "/" + x + "/" + y + "." + this.type;
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}
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function addMarkerToMap(position, icon, description) {
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if (markers == null) {
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markers = new OpenLayers.Layer.Markers("markers");
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map.addLayer(markers);
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}
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var marker = new OpenLayers.Marker(position, icon);
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markers.addMarker(marker);
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if (description) {
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marker.events.register("click", marker, function() { openMapPopup(marker, description) });
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}
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return marker;
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}
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function openMapPopup(marker, description) {
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// var box = document.createElement("div");
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// box.innerHTML = description;
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// box.style.display = 'none';
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// box.style.width = "200px";
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// document.body.appendChild(box);
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closeMapPopup();
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popup = new OpenLayers.Popup.AnchoredBubble("popup", marker.lonlat,
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new OpenLayers.Size(200, 50),
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"<p>" + description + "</p>",
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marker.icon, true);
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popup.setBackgroundColor("#E3FFC5");
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map.addPopup(popup);
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return popup;
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}
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function closeMapPopup() {
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if (popup) {
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map.removePopup(popup);
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delete popup;
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}
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}
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function removeMarkerFromMap(marker){
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markers.removeMarker(marker);
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}
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function mercatorToLonLat(merc) {
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var lon = (merc.lon / 20037508.34) * 180;
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var lat = (merc.lat / 20037508.34) * 180;
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var PI = 3.14159265358979323846;
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lat = 180/PI * (2 * Math.atan(Math.exp(lat * PI / 180)) - PI / 2);
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return new OpenLayers.LonLat(lon, lat);
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}
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function lonLatToMercator(ll) {
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var lon = ll.lon * 20037508.34 / 180;
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var lat = Math.log(Math.tan((90 + ll.lat) * PI / 360)) / (PI / 180);
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lat = lat * 20037508.34 / 180;
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return new OpenLayers.LonLat(lon, lat);
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}
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function scaleToZoom(scale) {
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return Math.log(360.0/(scale * 512.0)) / Math.log(2.0);
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}
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@ -470,10 +470,6 @@ input {
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padding : 2px;
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}
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#popup p, #popup span {
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background-color : #E3FFC5 !important;
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}
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#map p#highlightinfo p, #popup p {
|
||||
margin : 0;
|
||||
padding : 2px;
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue