camera.dart

 Widget captureControlRowWidget() {
    return Row(
      mainAxisAlignment: MainAxisAlignment.spaceEvenly,
      mainAxisSize: MainAxisSize.max,
      children: <Widget>[
        IconButton(
          icon: const Icon(Icons.camera_alt),
          color: Colors.blue,
          onPressed: controller != null && controller.value.isInitialized
              ? onTakePictureButtonPressed
              : null,
        ),
      ],
    );
  }