record lux_fast and lux _slow

lib/light_sensor_event.dart

@@ -3,9 +3,13 @@ import 'dart:ffi';
 class LightSensorEvent {
   final double lux;
   final int timestamp;
-  LightSensorEvent(this.lux, this.timestamp);
+  final double lux_fast;
+  final double lux_slow;
+  LightSensorEvent(this.lux, this.timestamp, this.lux_fast, this.lux_slow);
   Map<String, dynamic> toJson() => {
-        'lux': lux,
         'timestamp': timestamp,
+        'lux': lux,
+        'lux_fast': lux_fast,
+        'lux_slow': lux_slow,
       };
 }

lib/main.dart

@@ -174,8 +174,8 @@ class _MyHomePageState extends State<MyHomePage> {
 
   Stream<LightSensorEvent> streamSensorEventFromNative() {
     const eventChannel = EventChannel('tw.moonjuice.light_sensor.stream');
-    return eventChannel
-        .receiveBroadcastStream()
-        .map((event) => LightSensorEvent(event['lux'], event['timestamp']));
+    return eventChannel.receiveBroadcastStream().map((event) =>
+        LightSensorEvent(event['lux'], event['timestamp'], event['lux_fast'],
+            event['lux_slow']));
   }
 }