Set max zoom to 19 and log related errors as DEBUG instead of WARN

crates/viewer/re_component_ui/src/zoom_level.rs

@@ -1,8 +1,11 @@
 use re_types::datatypes;
 use re_viewer_context::MaybeMutRef;
 
-//TODO(#7876): move this to `re_space_view_map` when the crate is no longer behind a Cargo feature.
-const MAX_ZOOM_LEVEL: f32 = 22.0;
+// TODO(#7876): move this to `re_space_view_map` when the crate is no longer behind a Cargo feature.
+// TODO(ab): currently set at 19 because that's what walkers has as hard-coded limit. In the future,
+// walkers will need to be more flexible (e.g. depend on the actually max zoom level for the map
+// provider). At that point, we will have to set some kind of "max ever" value here.
+const MAX_ZOOM_LEVEL: f32 = 19.0;
 
 /// Editor for a [`re_types::blueprint::components::ZoomLevel`].
 pub fn edit_zoom_level(

crates/viewer/re_space_view_map/src/map_space_view.rs

@@ -98,11 +98,7 @@ Displays geospatial primitives on a map.
     }
 
     fn new_state(&self) -> Box<dyn SpaceViewState> {
-        Box::<MapSpaceViewState>::new(MapSpaceViewState {
-            tiles: None,
-            map_memory: MapMemory::default(),
-            selected_provider: MapProvider::default(),
-        })
+        Box::<MapSpaceViewState>::new(MapSpaceViewState::default())
     }
 
     fn preferred_tile_aspect_ratio(&self, _state: &dyn SpaceViewState) -> Option<f32> {
@@ -201,8 +197,11 @@ Displays geospatial primitives on a map.
         let zoom_level = blueprint_zoom_level.or(default_zoom_level).unwrap_or(16.0);
 
         if state.map_memory.set_zoom(zoom_level).is_err() {
-            re_log::warn_once!(
-                "Failed to set zoom level for map. Zoom level should be between zero and 22"
+            //TODO(ab): we need a better handling of this, but requires upstream work (including
+            //accepting higher zoom level and using lower-resolution tiles.
+            re_log::debug!(
+                "Zoom level {zoom_level} rejected by walkers (probably means that it is not \
+                supported by the configured map provider)"
             );
         };