TooltipTheme(
data: TooltipThemeData(
decoration: BoxDecoration(
color: Colors.white,
borderRadius: BorderRadius.zero,
),
),
child: Tooltip(
message: 'Add Button',
textStyle: TextStyle(
color: Colors.black,
fontWeight: FontWeight.bold
),
child: IconButton(
iconSize: 40,
icon: const Icon(Icons.add, color: Colors.white,),
onPressed: () {},
),
),
),