custompaint.dart

import 'package:flutter/material.dart';

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

  @override
  Widget build(BuildContext context) {
    return Scaffold(
        appBar: AppBar(
          title: const Text("CustomPaint"),
        ),
        body: Padding(
          padding: const EdgeInsets.all(20.0),
          child: Center(
              child: CustomPaint(
            painter: DemoPainter(),
            child: const Text(
              'This is Pac man',
              style: TextStyle(
                  color: Colors.black,
                  backgroundColor: Colors.white,
                  fontSize: 30.0),
            ),
          )),
        ));
  }
}

class DemoPainter extends CustomPainter {
  @override
  void paint(Canvas canvas, Size size) {
    var center = size / 2;
    var paint = Paint()..color = Colors.yellow;
    canvas.drawArc(
        Rect.fromCenter(
            center: Offset(center.width, center.height),
            width: 250,
            height: 250),
        0.4,
        2 * 3.14 - 0.8,
        true,
        paint);
  }

  @override
  bool shouldRepaint(DemoPainter oldDelegate) => false;

  @override
  bool shouldRebuildSemantics(DemoPainter oldDelegate) => false;
}