of static method
从最近的 TxTipTheme 祖先返回配置 data。
如果没有祖先,则返回 ThemeData.extension<TxTipThemeData>(); 如果它也为null,则返回默认TxTipThemeData
Implementation
static TxTipThemeData of(BuildContext context) {
final TxTipTheme? radioTheme =
context.dependOnInheritedWidgetOfExactType<TxTipTheme>();
return radioTheme?.data ??
Theme.of(context).extension<TxTipThemeData>() ??
const TxTipThemeData();
}