Support route origin as geocoding reference point

If available, the route origin is now used as a reference point when
searching for the target of the route.

Since the target search is specifically for the purpose of finding a
point you want to reach from the origin, it is most likely to be the
best reference. This also comes with the advantage of showing an
approximate distance (as the crow flies) of the route.

Closes #29.

Author: chrisduerr

CHANGELOG.md

@@ -14,6 +14,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 ### Changed
 
 - Default zoom on GPS location changed from level 19 to 18
+- Search for the route target will now use the origin as reference point
 
 ### Fixed
 

src/ui/view/search.rs

@@ -206,7 +206,10 @@ impl SearchView {
             self.geocoder.reset();
         } else {
             // Submit background query.
-            let reference_point = self.gps.unwrap_or(self.map_center_point);
+            let reference_point = match self.route_origin {
+                Some(RouteOrigin::Gps) | None => self.gps.unwrap_or(self.map_center_point),
+                Some(RouteOrigin::GeoPoint(point)) => point,
+            };
             let mut query = SearchQuery::new(&self.last_query);
             query.set_reference(reference_point, self.map_center_zoom);
             self.geocoder.search(query);