RenderPositionedBox constructor

RenderPositionedBox({RenderBox child, double widthFactor, double heightFactor, AlignmentGeometry alignment: Alignment.center, TextDirection textDirection })

Creates a render object that positions its child.

Implementation 

RenderPositionedBox({
  RenderBox child,
  double widthFactor,
  double heightFactor,
  AlignmentGeometry alignment = Alignment.center,
  TextDirection textDirection,
}) : assert(widthFactor == null || widthFactor >= 0.0),
     assert(heightFactor == null || heightFactor >= 0.0),
     _widthFactor = widthFactor,
     _heightFactor = heightFactor,
     super(child: child, alignment: alignment, textDirection: textDirection);