spinnerRect method

Rect spinnerRect()

获取当前筛选框头部的坐标信息

Implementation

Rect spinnerRect() {
  final render = targetKey.currentContext!.findRenderObject() as RenderBox;
  final topLeft = render.localToGlobal(Offset.zero);
  return Rect.fromPoints(
    topLeft,
    Offset(
      topLeft.dx + render.size.width,
      topLeft.dy + render.size.height,
    ),
  );
}