started code to show gridsquare overlay

application/config/cloudlog.php

@@ -32,4 +32,17 @@ $config['show_time'] = FALSE;
 | Default is: M
 |
 */
-$config['measurement_base'] = 'M';
+$config['measurement_base'] = 'M';
+
+/*
+|--------------------------------------------------------------------------
+| Show Gridsquares on Maps
+|--------------------------------------------------------------------------
+| 
+| You can turn on whether gridsquares are shown on maps automatically else 
+| you have to turn them on via the layer control
+|
+| Default is: FALSE
+|
+*/
+$config['map_gridsquares'] = FALSE;

application/views/interface_assets/footer.php

@@ -31,6 +31,7 @@ $(document).ready(function() {
 </script>
 
 <?php if ($this->uri->segment(1) == "" || $this->uri->segment(1) == "dashboard" ) { ?>
+    <script type="text/javascript" src="<?php echo base_url();?>assets/js/leaflet/L.Maidenhead.js"></script>
     <script type="text/javascript" src="<?php echo base_url();?>assets/js/leaflet/leafembed.js"></script>
     <script type="text/javascript">
       
@@ -45,8 +46,17 @@ $(document).ready(function() {
         var qso_loc = '<?php echo site_url('dashboard/map');?>';
         var q_zoom = 2;
 
+
+
+
       $(document).ready(function(){
-            initmap();
+            <?php if ($this->config->item('map_gridsquares') != FALSE) { ?>
+              var grid = "Yes";
+            <?php } else { ?>
+              var grid = "No";
+            <?php } ?>
+            initmap(grid);
+
       });
     </script>
 <?php } ?>

assets/js/leaflet/L.Maidenhead.js

@@ -0,0 +1,113 @@
+/*
+ * L.Maidenhead displays a Maidenhead Locator of lines on the map.
+ */
+
+L.Maidenhead = L.LayerGroup.extend({
+
+	
+	options: {
+		// Line and label color
+		color: 'rgba(255, 0, 0, 0.4)',
+		// Redraw on move or moveend
+		redraw: 'move'
+	},
+
+	initialize: function (options) {
+		L.LayerGroup.prototype.initialize.call(this);
+		L.Util.setOptions(this, options);
+
+	},
+
+	onAdd: function (map) {
+		this._map = map;
+		var grid = this.redraw();
+		this._map.on('viewreset '+ this.options.redraw, function () {
+			grid.redraw();
+		});
+
+		this.eachLayer(map.addLayer, map);
+	},
+	
+	onRemove: function (map) {
+		// remove layer listeners and elements
+		map.off('viewreset '+ this.options.redraw, this.map);
+		this.eachLayer(this.removeLayer, this);
+	},
+
+	redraw: function () {
+		var d3 =         new Array(20,10,10,10,10,10,1 ,1 ,1 ,1 ,1/24,1/24,1/24,1/24,1/24,1/240,1/240,1/240,1/240,1/240/24,1/240/24 );
+		var lat_cor =    new Array(0 ,8 ,8 ,8 ,10,14,6 ,8 ,8 ,8 ,1.4 ,2.5 ,3   ,3.5 ,4   ,4    ,3.5  ,3.5  ,3    ,1.8     ,1.6      );
+		var bounds = map.getBounds();
+		var zoom = map.getZoom();
+		var unit = d3[zoom];
+		var lcor = lat_cor[zoom];
+		var w = bounds.getWest();
+		var e = bounds.getEast();
+		var n = bounds.getNorth();
+		var s = bounds.getSouth();
+		if (zoom==1) {var c = 2;} else {var c = 0.1;}
+		if (n > 85) n = 85;
+		if (s < -85) s = -85;
+		var left = Math.floor(w/(unit*2))*(unit*2);
+		var right = Math.ceil(e/(unit*2))*(unit*2);
+		var top = Math.ceil(n/unit)*unit;
+		var bottom = Math.floor(s/unit)*unit;
+		this.eachLayer(this.removeLayer, this);
+		for (var lon = left; lon < right; lon += (unit*2)) {
+			for (var lat = bottom; lat < top; lat += unit) {
+			var bounds = [[lat,lon],[lat+unit,lon+(unit*2)]];
+			this.addLayer(L.rectangle(bounds, {color: this.options.color, weight: 1, fill:false, interactive: false}));
+			//var pont = map.latLngToLayerPoint([lat,lon]);
+			//console.log(pont.x);
+			this.addLayer(this._getLabel(lon+unit-(unit/lcor),lat+(unit/2)+(unit/lcor*c)));
+			}
+		}
+		return this;
+	},
+    	
+	_getLabel: function(lon,lat) {
+	  var title_size = new Array(0 ,10,12,16,20,26,12,16,24,36,12  ,14  ,20  ,36  ,60  ,12   ,20   ,36   ,60   ,12      ,24       );
+	  var zoom = map.getZoom();
+	  var size = title_size[zoom]+'px';
+	  var title = '<span style="cursor: default;"><font style="color:'+this.options.color+'; font-size:'+size+'; font-weight: 900; ">' + this._getLocator(lon,lat) + '</font></span>';
+      var myIcon = L.divIcon({className: 'my-div-icon', html: title});
+      var marker = L.marker([lat,lon], {icon: myIcon}, clickable=false);
+      return marker;
+	},
+	
+	_getLocator: function(lon,lat) {
+	  var ydiv_arr=new Array(10, 1, 1/24, 1/240, 1/240/24);
+	  var d1 = "ABCDEFGHIJKLMNOPQR".split("");
+	  var d2 = "ABCDEFGHIJKLMNOPQRSTUVWX".split("");
+	  var d4 =         new Array(0 ,1 ,1 ,1 ,1 ,1 ,2 ,2 ,2 ,2 ,3   ,3   ,3   ,3   ,3   ,4    ,4    ,4    ,4    ,5       ,5        );
+      var locator = "";
+      var x = lon;
+      var y = lat;
+      var precision = d4[map.getZoom()];
+      while (x < -180) {x += 360;}
+      while (x > 180) {x -=360;}
+      x = x + 180;
+      y = y + 90;
+      locator = locator + d1[Math.floor(x/20)] + d1[Math.floor(y/10)];
+      for (var i=0; i<4; i=i+1) {
+		if (precision > i+1) {
+        rlon = x%(ydiv_arr[i]*2);
+        rlat = y%(ydiv_arr[i]);
+			if ((i%2)==0) {
+				locator += Math.floor(rlon/(ydiv_arr[i+1]*2)) +""+ Math.floor(rlat/(ydiv_arr[i+1]));
+			} else {
+				locator += d2[Math.floor(rlon/(ydiv_arr[i+1]*2))] +""+ d2[Math.floor(rlat/(ydiv_arr[i+1]))];	
+			}
+		}
+	  }  
+      return locator;
+	},
+
+  
+	
+
+});
+
+L.maidenhead = function (options) {
+	return new L.Maidenhead(options);
+};

assets/js/leaflet/leafembed.js

@@ -5,7 +5,7 @@ var ajaxRequest;
 var plotlist;
 var plotlayers=[];
 
-function initmap() {
+function initmap(ShowGrid = 'No') {
     // set up AJAX request
     ajaxRequest=getXmlHttpObject();
     if (ajaxRequest==null) {
@@ -27,6 +27,15 @@ function initmap() {
 
 	askForPlots();
 	map.on('moveend', onMapMove);
+
+	if(ShowGrid == "Yes") {
+		var maidenhead = L.maidenhead().addTo(map);
+	}
+	
+	var layerControl = new L.Control.Layers(null, {
+    'Gridsquares': maidenhead = L.maidenhead()
+	}).addTo(map);
+
 }
 
 function getXmlHttpObject() {