Configure maxZoom in conf.php

conf.php-dist

@@ -17,6 +17,9 @@ $config['defaultView'] = array('lat' => 51.505, 'lon' => -0.09, 'zoom' => 18);
 // Shall the initial map view be retrieved via IP location? (default: true)
 $config['checkIpLocation'] = true;
 
+// maxZoom (tiles will be scaled if higher than native zoom level). Default: 19.
+$config['maxZoom'] = 19;
+
 // Available base maps; first is default
 $config['baseMaps'] = array(
   array(

src/mapLayers.js

@@ -2,7 +2,7 @@ register_hook('init', function () {
   if (!config.baseMaps) {
     var osm_mapnik = L.tileLayer('//{s}.tile.openstreetmap.org/{z}/{x}/{y}.png',
       {
-        maxZoom: 19,
+        maxZoom: config.maxZoom || 19,
         attribution: '&copy; <a href="http://www.openstreetmap.org/copyright">OpenStreetMap</a>'
       }
     )
@@ -21,7 +21,7 @@ register_hook('init', function () {
       {
         attribution: def.attribution,
         maxNativeZoom: def.maxZoom,
-        maxZoom: 19
+        maxZoom: config.maxZoom || 19
       }
     )