Creates an ink well.
Must have an ancestor Material widget in which to cause ink reactions.
Source
InkWell({ Key key, Widget child, GestureTapCallback onTap, GestureTapCallback onDoubleTap, GestureLongPressCallback onLongPress, ValueChanged<bool> onHighlightChanged }) : super( key: key, child: child, onTap: onTap, onDoubleTap: onDoubleTap, onLongPress: onLongPress, onHighlightChanged: onHighlightChanged, containedInkWell: true, highlightShape: BoxShape.rectangle );