zero constant

WindowPadding const zero = const WindowPadding._(left: 0.0, top: 0.0, right: 0.0, bottom: 0.0)

A window padding that has zeros for each edge.

Implementation 

static const WindowPadding zero = const WindowPadding._(left: 0.0, top: 0.0, right: 0.0, bottom: 0.0)