- iOS impl

Author: tuyen-vuduc

src/libs/Mapbox.Maui/Platforms/iOS/AdditionalExtensions.cs

@@ -369,5 +369,10 @@ internal static NSValue ToNSValue(this ScreenPosition screenPosition)
     {
         return NSValue.FromCGPoint(screenPosition.ToNative());
     }
+
+    internal static NSNumber ToNSNumber(this double value)
+    {
+        return NSNumber.FromDouble(value);
+    }
 }
 

src/libs/Mapbox.Maui/Platforms/iOS/MapboxViewHandler.Controller.cs

@@ -42,4 +42,85 @@ public ScreenPosition GetScreenPosition(IPosition position)
         var coords = mapView.MapboxMap().PointFor(position.ToCoords());
         return coords.ToPoint();
     }
+
+    /**
+    * Convenience method that returns the [CameraOptions] object for given parameters.
+    *
+    * Note: if the render thread did not yet calculate the size of the map (due to initialization or map resizing) - empty [CameraOptions] will be returned.
+    *  Emptiness could be checked with [CameraOptions.isEmpty]. Consider using asynchronous overloaded method.
+    *
+    * @param coordinates The `coordinates` representing the bounds of the camera.
+    * @param camera The [CameraOptions] which will be applied before calculating the camera for the coordinates. If any of the fields in [CameraOptions] are not provided then the current value from the map for that field will be used.
+    * @param coordinatesPadding The amount of padding in pixels to add to the given `coordinates`.
+    *                           Note: This padding is not applied to the map but to the coordinates provided. If you want to apply padding to the map use param `camera`.
+    * @param maxZoom The maximum zoom level allowed in the returned camera options.
+    * @param offset The center of the given bounds relative to map center in pixels.
+    *
+    * @return The [CameraOptions] object representing the provided parameters if the map size was calculated and empty [CameraOptions] otherwise, see [CameraOptions.isEmpty].
+    *  Also empty [CameraOptions] are returned in case of an internal error.
+    */
+    public CameraOptions? CameraForCoordinates(
+        IEnumerable<MapPosition> coordinates,
+        CameraOptions? cameraOptions = null,
+        Thickness? coordinatesPadding = null,
+        double? maxZoom = null,
+        ScreenPosition? offset = null)
+    {
+        var mapView = PlatformView.MapView;
+
+        if (mapView == null) return default;
+
+        TMBCameraOptions? xresult = null;
+        mapView.MapboxMap().CameraFor(
+            coordinates?.Select(x => x.ToNSValue()).ToArray(),
+            cameraOptions?.ToNative(),
+            coordinatesPadding?.ToNSValue(),
+            maxZoom?.ToNSNumber(),
+            offset?.ToNSValue(),
+            (result, _) =>
+            {
+                xresult = result;
+            });
+        return xresult?.ToX();
+    }
+
+    /**
+    * Convenience method that returns the [CameraOptions] object for given parameters.
+    *
+    * @param coordinates The `coordinates` representing the bounds of the camera.
+    * @param camera The [CameraOptions] which will be applied before calculating the camera for the coordinates. If any of the fields in [CameraOptions] are not provided then the current value from the map for that field will be used.
+    * @param coordinatesPadding The amount of padding in pixels to add to the given `coordinates`.
+    *                           Note: This padding is not applied to the map but to the coordinates provided. If you want to apply padding to the map use param `camera`.
+    * @param maxZoom The maximum zoom level allowed in the returned camera options.
+    * @param offset The center of the given bounds relative to map center in pixels.
+    * @param completion Callback returning the [CameraOptions] object representing the provided parameters. Those [CameraOptions] always take into account actual MapView size and may return empty ([CameraOptions.isEmpty]) options only if an internal error has occurred.
+    */
+    public void CameraForCoordinates(
+        IEnumerable<MapPosition> coordinates,
+        Action<CameraOptions?> completion,
+        CameraOptions? cameraOptions = null,
+        Thickness? coordinatesPadding = null,
+        double? maxZoom = null,
+        ScreenPosition? offset = null)
+    {
+
+        var mapView = PlatformView.MapView;
+
+        if (mapView == null)
+        {
+            completion(null);
+            return;
+        }
+
+        mapView.MapboxMap().CameraFor(
+            coordinates?.Select(x => x.ToNSValue()).ToArray(),
+            cameraOptions?.ToNative(),
+            coordinatesPadding?.ToNSValue(),
+            maxZoom?.ToNSNumber(),
+            offset?.ToNSValue(),
+            (result, _) =>
+            {
+                completion(result?.ToX());
+            });
+    }
 }