Merge pull request #382 from martinRenou/max_min_native_zoom

Add min_native_zoom and max_native_zoom for TileLayer

Author: martinRenou

docs/source/api_reference/tile_layer.rst

@@ -52,6 +52,8 @@ Attribute          Default Value
 url                "https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png"
 min_zoom           0
 max_zoom           18
+min_native_zoom    0
+max_native_zoom    18
 tile_size          256
 attribution        "Map data (c) <a href=\'https://openstreetmap.org\'>OpenStreetMap</a> contributors"
 detect_retina      False

ipyleaflet/leaflet.py

@@ -235,6 +235,8 @@ class TileLayer(RasterLayer):
     url = Unicode('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png').tag(sync=True)
     min_zoom = Int(0).tag(sync=True, o=True)
     max_zoom = Int(18).tag(sync=True, o=True)
+    min_native_zoom = Int(0).tag(sync=True, o=True)
+    max_native_zoom = Int(18).tag(sync=True, o=True)
     tile_size = Int(256).tag(sync=True, o=True)
     attribution = Unicode('Map data (c) <a href="https://openstreetmap.org">OpenStreetMap</a> contributors').tag(sync=True, o=True)
     detect_retina = Bool(False).tag(sync=True, o=True)