WindowPadding padding

The number of physical pixels on each side of the display rectangle into which the application can render, but over which the operating system will likely place system UI (such as the Android system notification area), or which might be rendered outside of the physical display (e.g. overscan regions on television screens).

See also:

WidgetsBindingObserver, for a mechanism at the widgets layer to observe when this value changes. MediaQuery.of, a simpler mechanism for the same. Scaffold, which automatically applies the padding in material design applications.

Source

WindowPadding get padding => _padding;