FontFeature.tabularFigures constructor Null safety

const FontFeature.tabularFigures()

Use tabular (monospace) figures. (tnum)

For fonts that have both proportional (varying width) and tabular figures, this enables the tabular figures. Tabular figures are monospaced (all the same width), so that they align in tables of figures.

This is mutually exclusive with FontFeature.proportionalFigures.

The default behavior varies from font to font.

link
The Piazzolla font supports the tnum feature. It causes the digits to become uniformly-sized, rather than having variable widths. In this font this is especially noticeable with the digit "1"; with tabular figures enabled, the "1" digit is more widely spaced.

To create a local project with this code sample, run:
flutter create --sample=dart.dart_ui.FontFeature.tabularFigures.1 mysample 
import 'dart:ui';

import 'package:flutter/widgets.dart';

void main() => runApp(const ExampleApp());

class ExampleApp extends StatelessWidget {
  const ExampleApp({super.key});

  @override
  Widget build(BuildContext context) {
    return WidgetsApp(
      builder: (BuildContext context, Widget? navigator) =>
          const ExampleWidget(),
      color: const Color(0xffffffff),
    );
  }
}

class ExampleWidget extends StatelessWidget {
  const ExampleWidget({super.key});

  @override
  Widget build(BuildContext context) {
    // The Piazzolla font can be downloaded from Google Fonts (https://www.google.com/fonts).
    return const Text(
      'Call 311-555-2368 now!',
      style: TextStyle(
        fontFamily: 'Piazzolla',
        fontFeatures: <FontFeature>[
          FontFeature.tabularFigures(),
        ],
      ),
    );
  }
}

See also:

Implementation

const FontFeature.tabularFigures() : feature = 'tnum', value = 1;