flutter_arc_text 0.4.0-nullsafety.0

Flutter widget that renders text along the arc with configurable radius.

example/lib/main.dart

import 'dart:math';

import 'package:flutter/material.dart';
import 'package:flutter_arc_text/flutter_arc_text.dart';
import 'package:storybook_flutter/storybook_flutter.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) => MaterialApp(
        home: Scaffold(
          body: Story(
            name: 'Arc text',
            builder: (_, k) {
              final displayCircle = k.boolean('Display circle', initial: true);
              final radius =
                  k.slider('Radius', initial: 100, max: 200, min: 50);
              final startAngle =
                  k.slider('Start angle', initial: 0, max: 360) * pi / 180;
              final stretchAngle =
                  k.slider('Stretch angle', initial: 0, max: 360) * pi / 180;
              final text = k.text(
                'Text',
                initial: 'Hello, Flutter! I am ArcText widget. '
                    'I can draw circular text.',
              );
              final alignment = k.options('Alignment',
                  options: const [
                    Option('Start', StartAngleAlignment.start),
                    Option('Center', StartAngleAlignment.center),
                    Option('End', StartAngleAlignment.end),
                  ],
                  initial: StartAngleAlignment.start);
              return Container(
                decoration: displayCircle
                    ? BoxDecoration(
                        border: Border.all(),
                        borderRadius: BorderRadius.circular(radius),
                        color: Colors.white,
                      )
                    : null,
                width: radius * 2,
                height: radius * 2,
                child: ArcText(
                  radius: radius,
                  text: text,
                  textStyle: TextStyle(fontSize: 18, color: Colors.black),
                  startAngle: startAngle,
                  startAngleAlignment: alignment,
                  placement: k.options(
                    'Placement',
                    options: const [
                      Option('Outside', Placement.outside),
                      Option('Inside', Placement.inside),
                      Option('Middle', Placement.middle),
                    ],
                    initial: Placement.outside,
                  ),
                  direction: k.boolean('Clockwise', initial: true)
                      ? Direction.clockwise
                      : Direction.counterClockwise,
                  stretchAngle: stretchAngle == 0 ? null : stretchAngle,
                ),
              );
            },
          ),
        ),
      );
}