Limit Osmarender zoom to 17 levels.

[rails.git] / app / views / site / index.rhtml

diff --git a/app/views/site/index.rhtml b/app/views/site/index.rhtml
index a79ea10c39f867705bac09a1365f2dec46c7d259..b8fcf579ee2c6071d78257eb204210052ad97456 100644 (file)
--- a/app/views/site/index.rhtml
+++ b/app/views/site/index.rhtml
@@ -21,64 +21,70 @@
 </div> 
 
 <div id="attribution">
-<table width="100%">
-<tr>
-<td align="left">http://creativecommons.org/licenses/by-sa/2.0/</td>
-<td align="right">http://openstreetmap.org/</td>
-</tr>
-<tr>
-<td colspan="2" align="center">
-Licensed under the Creative Commons Attribution-Share Alike 2.0 license
-by the OpenStreetMap project and its contributors.
-</td>
-</table>
+  <table width="100%">
+    <tr>
+      <td align="left">http://creativecommons.org/licenses/by-sa/2.0/</td>
+      <td align="right">http://openstreetmap.org/</td>
+    </tr>
+    <tr>
+      <td colspan="2" align="center">Licensed under the Creative Commons Attribution-Share Alike 2.0 license by the OpenStreetMap project and its contributors.</td>
+    </tr>
+  </table>
 </div>
 
-<% if params['mlon'] and params['mlat'] %>
-<% marker = true %>
-<% mlon = h(params['mlon']) %> 
-<% mlat = h(params['mlat']) %>
-<% end %>
-
-<% if params['minlon'] and params['minlat'] and params['maxlon'] and params['maxlat'] %>
-<% bbox = true %>
-<% minlon = h(params['minlon']) %>
-<% minlat = h(params['minlat']) %>
-<% maxlon = h(params['maxlon']) %>
-<% maxlat = h(params['maxlat']) %>
-<% end %>
-
-<% if params['lon'] and params['lat'] %>
-<% lon =  h(params['lon']) %>
-<% lat =  h(params['lat']) %>
-<% zoom =  h(params['zoom'] || '5') %>
-<% layers = h(params['layers']) %>
-<% elsif params['mlon'] and params['mlat'] %>
-<% lon = h(params['mlon']) %> 
-<% lat = h(params['mlat']) %>
-<% zoom =  h(params['zoom'] || '12') %>
-<% layers = h(params['layers']) %>
-<% elsif cookies.key?("_osm_location") %>
-<% lon,lat,zoom,layers = cookies["_osm_location"].split("|") %>
-<% elsif @user and !@user.home_lon.nil? and !@user.home_lat.nil? %> 
-<% lon =  @user.home_lon %>
-<% lat =  @user.home_lat %>
-<% zoom = '10' %>
-<% else %>
-<% session[:location] = OSM::IPLocation(request.env['REMOTE_ADDR']) unless session[:location] %>
-<% if session[:location] %>
-<% bbox = true %>
-<% minlon = session[:location][:minlon] %>
-<% minlat = session[:location][:minlat] %>
-<% maxlon = session[:location][:maxlon] %>
-<% maxlat = session[:location][:maxlat] %>
-<% else %>
-<% lon =  '-0.1' %>
-<% lat =  '51.5' %>
-<% zoom =  h(params['zoom'] || '5') %>
-<% end %>
-<% layers = h(params['layers']) %>
-<% end %>
+<%
+if params['mlon'] and params['mlat'] 
+       marker = true
+       mlon = h(params['mlon'])
+       mlat = h(params['mlat'])
+end
+
+if params['minlon'] and params['minlat'] and params['maxlon'] and params['maxlat']
+       bbox = true
+       minlon = h(params['minlon'])
+       minlat = h(params['minlat'])
+       maxlon = h(params['maxlon'])
+       maxlat = h(params['maxlat'])
+       box = true if params['box']=="yes" 
+end
+
+# Decide on a lat lon to initialise the map with. Various ways of doing this
+if params['lon'] and params['lat'] 
+       lon =  h(params['lon'])
+       lat =  h(params['lat'])
+       zoom =  h(params['zoom'] || '5')
+       layers = h(params['layers'])
+       
+elsif params['mlon'] and params['mlat']
+       lon = h(params['mlon']) 
+       lat = h(params['mlat'])
+       zoom =  h(params['zoom'] || '12')
+       layers = h(params['layers'])
+       
+elsif cookies.key?("_osm_location")
+       lon,lat,zoom,layers = cookies["_osm_location"].split("|")
+       
+elsif @user and !@user.home_lon.nil? and !@user.home_lat.nil? 
+       lon =  @user.home_lon
+       lat =  @user.home_lat
+       zoom = '10'
+else
+       session[:location] = OSM::IPLocation(request.env['REMOTE_ADDR']) unless session[:location]
+
+       if session[:location]
+               bbox = true
+               minlon = session[:location][:minlon]
+               minlat = session[:location][:minlat]
+               maxlon = session[:location][:maxlon]
+               maxlat = session[:location][:maxlat]
+       else
+               lon =  '-0.1' 
+               lat =  '51.5' 
+               zoom =  h(params['zoom'] || '5') 
+       end
+       layers = h(params['layers']) 
+end
+%>
 
 <%= javascript_include_tag '/openlayers/OpenLayers.js' %>
 <%= javascript_include_tag '/openlayers/OpenStreetMap.js' %>
@@ -94,17 +100,27 @@ by the OpenStreetMap project and its contributors.
   function mapInit(){
     map = createMap("map");
 
+    <% unless OSM_STATUS == :api_offline or OSM_STATUS == :database_offline %>
+    map.dataLayer = new OpenLayers.Layer("Data", { "visibility": false });
+    map.dataLayer.events.register("visibilitychanged", map.dataLayer, toggleData);
+    map.addLayer(map.dataLayer);
+    <% end %>
+
     <% if bbox %>
     var bbox = new OpenLayers.Bounds(<%= minlon %>, <%= minlat %>, <%= maxlon %>, <%= maxlat %>);
 
     setMapExtent(bbox);
+    <%    if box %>
+    // IE requires Vector layers be initialised on page load, and not under deferred script conditions
+    Event.observe(window, 'load', function() {addBoxToMap(bbox)});
+    <%    end %>
     <% else %>
     var centre = new OpenLayers.LonLat(<%= lon %>, <%= lat %>);
     var zoom = <%= zoom %>;
 
-    <% if params['scale'] and params['scale'].length > 0 then %>
+    <%    if params['scale'] and params['scale'].length > 0 then %>
     zoom = scaleToZoom(<%= params['scale'].to_f() %>);
-    <% end %>
+    <%    end %>
 
     setMapCenter(centre, zoom);
     <% end %>
@@ -126,6 +142,14 @@ by the OpenStreetMap project and its contributors.
     handleResize();
   }
 
+  function toggleData() {
+    if (map.dataLayer.visibility) {
+      <%= remote_function :url => { :controller => 'browse', :action => 'start' } %>
+    } else {
+      closeSidebar();
+    }
+  }
+
   function getPosition() {
     return getMapCenter();
   }
@@ -145,9 +169,10 @@ by the OpenStreetMap project and its contributors.
     var lonlat = getMapCenter();
     var zoom = map.getZoom();
     var layers = getMapLayers();
+    var extents = getMapExtent();
 
-    updatelinks(lonlat.lon, lonlat.lat, zoom, layers);
-
+    updatelinks(lonlat.lon, lonlat.lat, zoom, layers, extents.left, extents.bottom, extents.right, extents.top);
+      
     document.cookie = "_osm_location=" + lonlat.lon + "|" + lonlat.lat + "|" + zoom + "|" + layers;
   }