안드로이드 contentRegion, coveringRegion 속성 추가 (#64)

Author: QuadFlask

android/src/main/java/com/github/quadflask/react/navermap/RNNaverMapView.java

@@ -11,7 +11,10 @@
 import com.facebook.react.bridge.Arguments;
 import com.facebook.react.bridge.LifecycleEventListener;
 import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.WritableArray;
 import com.facebook.react.bridge.WritableMap;
+import com.facebook.react.bridge.WritableNativeArray;
+import com.facebook.react.bridge.WritableNativeMap;
 import com.facebook.react.uimanager.ThemedReactContext;
 import com.facebook.react.uimanager.events.RCTEventEmitter;
 import com.naver.maps.geometry.LatLng;
@@ -279,6 +282,8 @@ public void onCameraIdle() {
         param.putDouble("latitude", cameraPosition.target.latitude);
         param.putDouble("longitude", cameraPosition.target.longitude);
         param.putDouble("zoom", cameraPosition.zoom);
+        param.putArray("contentRegion", ReactUtil.toWritableArray(naverMap.getContentRegion()));
+        param.putArray("coveringRegion", ReactUtil.toWritableArray(naverMap.getCoveringRegion()));
 
         emitEvent("onCameraChange", param);
     }

android/src/main/java/com/github/quadflask/react/navermap/ReactUtil.java

@@ -9,6 +9,10 @@
 import com.facebook.react.bridge.ReactApplicationContext;
 import com.facebook.react.bridge.ReadableArray;
 import com.facebook.react.bridge.ReadableMap;
+import com.facebook.react.bridge.WritableArray;
+import com.facebook.react.bridge.WritableMap;
+import com.facebook.react.bridge.WritableNativeArray;
+import com.facebook.react.bridge.WritableNativeMap;
 import com.facebook.react.uimanager.ThemedReactContext;
 import com.naver.maps.geometry.LatLng;
 import com.naver.maps.map.overlay.Align;
@@ -56,6 +60,20 @@ public static List<LatLng> toLatLngList(ReadableArray array) {
         return coords;
     }
 
+    public static WritableMap toWritableMap(LatLng latLng) {
+        WritableMap map = new WritableNativeMap();
+        map.putDouble("latitude", latLng.latitude);
+        map.putDouble("longitude", latLng.longitude);
+        return map;
+    }
+
+    public static WritableArray toWritableArray(LatLng[] latLngs) {
+        WritableArray array = new WritableNativeArray();
+        for (LatLng latLng : latLngs)
+            array.pushMap(toWritableMap(latLng));
+        return array;
+    }
+
     public static Integer getInt(@androidx.annotation.Nullable ReadableMap option, String key, Integer defaultValue) {
         if (option != null && option.hasKey(key))
             return option.getInt(key);