Recalculates the cell geometry.
- macOS 10.0+
The reference rectangle to use when calculating the cell information.
Objects (such as controls) that manage
NSCell objects generally maintain a flag that informs them if any of their cells have been modified in such a way that the location or size of the cell should be recomputed. If so,
calc method of
NSControl is automatically invoked prior to the display of the cell, and that method invokes the
calc method of the cell.
The default implementation of this method does nothing.