flutter/examples/api/lib/material/stepper/step_style.0.dart

// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import 'package:flutter/material.dart';

/// Flutter code sample for [StepStyle].

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

class StepStyleExampleApp extends StatelessWidget {

  const StepStyleExampleApp({ super.key });

   @override
   Widget build(BuildContext context) {
      return MaterialApp(
        home: Scaffold(
          appBar: AppBar(title: const Text('Step Style Example')),
          body: const Center(
            child: StepStyleExample(),
          ),
        ),
      );
  }
}

class StepStyleExample extends StatefulWidget {
  const StepStyleExample({ super.key });

   @override
   State<StepStyleExample> createState() => _StepStyleExampleState();
}

class _StepStyleExampleState extends State<StepStyleExample> {
  final StepStyle _stepStyle = StepStyle(
    connectorThickness: 10,
    color: Colors.white,
    connectorColor: Colors.red,
    indexStyle: const TextStyle(
      color: Colors.black,
      fontSize: 20,
    ),
    border: Border.all(
      width: 2,
    ),
  );

   @override
   Widget build(BuildContext context) {
      return Stepper(
      type: StepperType.horizontal,
      stepIconHeight: 48,
      stepIconWidth: 48,
      stepIconMargin: EdgeInsets.zero,
      steps: <Step>[
        Step(
          title: const SizedBox.shrink(),
          content: const SizedBox.shrink(),
          isActive: true,
          stepStyle: _stepStyle,
        ),
        Step(
          title: const SizedBox.shrink(),
          content: const SizedBox.shrink(),
          isActive: true,
          stepStyle: _stepStyle.copyWith(
            connectorColor: Colors.orange,
            gradient: const LinearGradient(
              colors: <Color>[
                Colors.white,
                Colors.black,
              ],
            ),
          ),
        ),
        Step(
          title: const SizedBox.shrink(),
          content: const SizedBox.shrink(),
          isActive: true,
          stepStyle: _stepStyle.copyWith(
            connectorColor: Colors.blue,
          ),
        ),
        Step(
          title: const SizedBox.shrink(),
          content: const SizedBox.shrink(),
          isActive: true,
          stepStyle: _stepStyle.merge(
            StepStyle(
              color: Colors.white,
              indexStyle: const TextStyle(
                color: Colors.black,
                fontSize: 20,
              ),
              border: Border.all(
                width: 2,
              ),
            ),
          ),
        ),
      ],
    );
  }
}