indicatorPadding property
Padding for indicator. This property will now no longer be ignored even if indicator is declared or provided by TabBarTheme
For isScrollable tab bars, specifying kTabLabelPadding will align the indicator with the tab's text for Tab widgets and all but the shortest Tab.text values.
The default value of indicatorPadding is EdgeInsets.zero.
Implementation
final EdgeInsetsGeometry indicatorPadding;