extent property
This region's minimum and maximum extent along the main resizable axis, in logical pixels.
The minimum extent is determined by FResizableRegion.minExtent. The maximum extent is determined by the FResizable's total extent - the minimum extent of all regions.
Contract
Throws AssertionError if:
- min <= 0
- max <= min
Implementation
final ({double min, double current, double max, double total}) extent;