import 'package:flutter/material.dart'; class AppBarShapeBorder extends ShapeBorder { final double radius; const AppBarShapeBorder(this.radius); @override EdgeInsetsGeometry get dimensions => EdgeInsets.zero; @override Path getInnerPath(Rect rect, {TextDirection? textDirection}) { return Path(); // Define inner path if needed } @override Path getOuterPath(Rect rect, {TextDirection? textDirection}) { // Define your custom shape path here Path path = Path(); path.moveTo(rect.left, rect.top); path.lineTo(rect.left, rect.bottom - (radius * 2)); path.quadraticBezierTo( rect.left, rect.bottom - radius, rect.left + radius, rect.bottom - radius, ); path.lineTo(rect.right - radius, rect.bottom - radius); path.quadraticBezierTo( rect.right, rect.bottom - radius, rect.right, rect.bottom); path.lineTo(rect.right, rect.top); path.close(); return path; } @override void paint(Canvas canvas, Rect rect, {TextDirection? textDirection}) { // Define your painting logic here Paint paint = Paint()..color = Colors.transparent; canvas.drawPath(getOuterPath(rect), paint); } @override ShapeBorder scale(double t) { // Implement scaling if needed return this; } }