horizontalScreenEdgePadding property
final
The padding on either edge of the screen that any part of the magnifier cannot exist past.
This includes any part of the magnifier, not just the center; for example, the left edge of the magnifier cannot be outside the horizontalScreenEdgePadding.v
If the screen has width w, then the magnifier is bound to
_kHorizontalScreenEdgePadding, w - _kHorizontalScreenEdgePadding.
Implementation
final double horizontalScreenEdgePadding;