brightnessOf static method
Retrieves the Brightness to use for descendant macOS widgets, based
on the value of MacosThemeData.brightness in the given context
.
If no MacosTheme can be found in the given context
, or its brightness
is null, it will fall back to MediaQueryData.platformBrightness.
Throws an exception if no valid MacosTheme or MediaQuery widgets exist in the ancestry tree.
See also:
- maybeBrightnessOf, which returns null if no valid MacosTheme or MediaQuery exists, instead of throwing.
- MacosThemeData.brightness, the property takes precedence over MediaQueryData.platformBrightness for descendant Cupertino widgets.
Implementation
static Brightness brightnessOf(BuildContext context) {
final _InheritedMacosTheme? inheritedTheme =
context.dependOnInheritedWidgetOfExactType<_InheritedMacosTheme>();
return inheritedTheme?.theme.data.brightness ??
MediaQuery.of(context).platformBrightness;
}