FlutterでCircle Buttonを作る

Material(
  shape: CircleBorder(
    side: BorderSide(color: Constants.lineColor, width: Constants.lineWidth),
  ),
  clipBehavior: Clip.hardEdge,
  color: Constants.appBackgroundColor,
  child: IconButton(
    padding: EdgeInsets.zero,
    onPressed: () {},
    iconSize: areaHeight*0.8,
    color: Constants.playButtonColor,
    icon: Icon(
      Icons.play_arrow_rounded,
    ),
  )
)