import 'package:flutter/material.dart'; class ControlButton extends StatelessWidget { final VoidCallback _onTap; final IconData iconData; ControlButton(this.iconData, this._onTap); @override Widget build(BuildContext context) { return new IconButton( onPressed: _onTap, iconSize: 50.0, icon: new Icon(iconData), color: Theme.of(context).buttonColor, ); } }