From 4e214746c6d95b4b5270ab28efb1d53c376e1c34 Mon Sep 17 00:00:00 2001
From: Tom Hughes <tom@compton.nu>
Date: Mon, 23 Sep 2013 17:29:07 +0100
Subject: [PATCH 1/1] Zoom out when switching to a layer with a lower maxZoom

---
 app/assets/javascripts/index.js | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/app/assets/javascripts/index.js b/app/assets/javascripts/index.js
index 5f6a4efb7..7f4887469 100644
--- a/app/assets/javascripts/index.js
+++ b/app/assets/javascripts/index.js
@@ -73,6 +73,12 @@ $(document).ready(function () {
     updateLayers(OSM.mapParams());
   });
 
+  map.on("baselayerchange", function (e) {
+    if (map.getZoom() > e.layer.options.maxZoom) {
+      map.setView(map.getCenter(), e.layer.options.maxZoom, { reset: true });
+    }
+  });
+
   map.noteLayer = new L.LayerGroup();
   map.noteLayer.options = {code: 'N'};
 
-- 
2.43.2