updateRangeAreaTheme method
- RangeAreaTheme update(
- RangeAreaTheme current
Rebuilds ChartTheme.rangeAreaTheme from its current value.
update receives the current RangeAreaTheme and returns the replacement, so
nested configuration is edited without re-stating the enclosing config.
Implementation
ChartTheme updateRangeAreaTheme(
RangeAreaTheme Function(RangeAreaTheme current) update,
) => copyWith(rangeAreaTheme: update(rangeAreaTheme));