TopBarWidget constructor
Implementation
const TopBarWidget({
  super.key,
  required this.child,
  required this.height,
  required this.width,
  required this.grad1,
  required this.grad2,
  required this.grad3,
  required this.grad4,
});
const TopBarWidget({
  super.key,
  required this.child,
  required this.height,
  required this.width,
  required this.grad1,
  required this.grad2,
  required this.grad3,
  required this.grad4,
});