FocusTarget constructor

This returns a widget for a step in a tutorial.

params:

key: key of type GlobalKey.
keyName: key where the widget shows.
description: description of the step.
isCircle: bool to specify if circle
align: align of type ContentAlign to align button.
crossAlign: Cross align axes
skipAlignment: to give alignment of skip option
next: Functiontype, this show the next step orkey` to show the tour of.
nextCrossAlign: nextCrossAlign to give alignment of next option
isEnd: true if last step of the tour.
tutorialCoachMark: instance of tutorialCoachMark to which this focusTarget is linked.

Implementation