getViewPosition static method

void getViewPosition(String listenerId, String clientElementId, double pixelRatio, int screenWidth, int screenHeight,)

Implementation

static void getViewPosition(String listenerId, String clientElementId,
    double pixelRatio, int screenWidth, int screenHeight) {
  BuildContext? element = findViewByKey(clientElementId, _ctx);
  if (element != null) {
    RenderBox box = element.findRenderObject() as RenderBox;
    Offset position = box.localToGlobal(Offset.zero);
    if (isWithinBounds(
        element, position, pixelRatio, screenWidth, screenHeight)) {
      Map<String, int?> positionMap = {
        "x": (position.dx * pixelRatio).round(),
        "y": (position.dy * pixelRatio).round(),
        "width": ((element.size?.width ?? 0) * pixelRatio).round(),
        "height": ((element.size?.height ?? 0) * pixelRatio).round()
      };
      _channel.invokeMethod('getViewPosition', <String, dynamic>{
        "listenerId": listenerId,
        "position": positionMap
      });
      return;
    }
  }

  // Passing values which make the object get ignored
  Map<String, int?> positionMapDefault = {
    "x": -1,
    "y": -1,
    "width": -1,
    "height": -1
  };
  _channel.invokeMethod('getViewPosition', <String, dynamic>{
    "listenerId": listenerId,
    "position": positionMapDefault
  });
}