Fix compass / orient north button (#2958)

app/src/google/java/com/geeksville/mesh/ui/map/MapView.kt

@@ -642,6 +642,21 @@ fun MapView(
                         isLocationTrackingEnabled = !isLocationTrackingEnabled
                     }
                 },
+                onOrientNorth = {
+                    coroutineScope.launch {
+                        try {
+                            val currentPosition = cameraPositionState.position
+                            val newCameraPosition =
+                                CameraPosition.Builder(currentPosition)
+                                    .bearing(0f) // Orient to north
+                                    .build()
+                            cameraPositionState.animate(CameraUpdateFactory.newCameraPosition(newCameraPosition))
+                            debug("Oriented map to north")
+                        } catch (e: IllegalStateException) {
+                            debug("Error orienting map to north: ${e.message}")
+                        }
+                    }
+                },
             )
         }
         if (showLayersBottomSheet) {

app/src/google/java/com/geeksville/mesh/ui/map/components/MapControlsOverlay.kt

@@ -20,6 +20,7 @@ package com.geeksville.mesh.ui.map.components
 import androidx.compose.foundation.layout.Box
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.LocationDisabled
+import androidx.compose.material.icons.outlined.Explore
 import androidx.compose.material.icons.outlined.Layers
 import androidx.compose.material.icons.outlined.Map
 import androidx.compose.material.icons.outlined.MyLocation
@@ -52,6 +53,7 @@ fun MapControlsOverlay(
     hasLocationPermission: Boolean = false,
     isLocationTrackingEnabled: Boolean = false,
     onToggleLocationTracking: () -> Unit = {},
+    onOrientNorth: () -> Unit = {},
 ) {
     VerticalFloatingToolbar(
         modifier = modifier,
@@ -95,6 +97,8 @@ fun MapControlsOverlay(
                 onClick = onManageLayersClicked,
             )
 
+            CompassButton(onOrientNorth = onOrientNorth)
+
             // Location tracking button
             if (hasLocationPermission) {
                 MapButton(
@@ -111,3 +115,12 @@ fun MapControlsOverlay(
         },
     )
 }
+
+@Composable
+private fun CompassButton(onOrientNorth: () -> Unit) {
+    MapButton(
+        icon = Icons.Outlined.Explore,
+        contentDescription = stringResource(id = R.string.orient_north),
+        onClick = onOrientNorth,
+    )
+}

app/src/main/res/values/strings.xml

@@ -331,6 +331,7 @@
     <string name="udp_config">UDP Config</string>
     <string name="map_node_popup_details"><![CDATA[%1$s<br>Last heard: %2$s<br>Last position: %3$s<br>Battery: %4$s]]></string>
     <string name="toggle_my_position">Toggle my position</string>
+    <string name="orient_north">Orient north</string>
     <string name="user">User</string>
     <string name="channels">Channels</string>
     <string name="device">Device</string>