flutter/examples/api/lib/material/range_slider/range_slider.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.

// Template: dev/snippets/config/templates/stateful_widget_scaffold.tmpl
//
// Comment lines marked with "▼▼▼" and "▲▲▲" are used for authoring
// of samples, and may be ignored if you are just exploring the sample.

// Flutter code sample for RangeSlider
//
//***************************************************************************
//* ▼▼▼▼▼▼▼▼ description ▼▼▼▼▼▼▼▼ (do not modify or remove section marker)

// ![A range slider widget, consisting of 5 divisions and showing the default
// value indicator.](https://flutter.github.io/assets-for-api-docs/assets/material/range_slider.png)
//
// This range values are in intervals of 20 because the Range Slider has 5
// divisions, from 0 to 100. This means are values are split between 0, 20, 40,
// 60, 80, and 100. The range values are initialized with 40 and 80 in this demo.

//* ▲▲▲▲▲▲▲▲ description ▲▲▲▲▲▲▲▲ (do not modify or remove section marker)
//***************************************************************************

import 'package:flutter/material.dart';

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

/// This is the main application widget.
class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  static const String _title = 'Flutter Code Sample';

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: _title,
      home: Scaffold(
        appBar: AppBar(title: const Text(_title)),
        body: const MyStatefulWidget(),
      ),
    );
  }
}

/// This is the stateful widget that the main application instantiates.
class MyStatefulWidget extends StatefulWidget {
  const MyStatefulWidget({Key? key}) : super(key: key);

  @override
  State<MyStatefulWidget> createState() => _MyStatefulWidgetState();
}

/// This is the private State class that goes with MyStatefulWidget.
class _MyStatefulWidgetState extends State<MyStatefulWidget> {
//********************************************************************
//* ▼▼▼▼▼▼▼▼ code ▼▼▼▼▼▼▼▼ (do not modify or remove section marker)

  RangeValues _currentRangeValues = const RangeValues(40, 80);

  @override
  Widget build(BuildContext context) {
    return RangeSlider(
      values: _currentRangeValues,
      min: 0,
      max: 100,
      divisions: 5,
      labels: RangeLabels(
        _currentRangeValues.start.round().toString(),
        _currentRangeValues.end.round().toString(),
      ),
      onChanged: (RangeValues values) {
        setState(() {
          _currentRangeValues = values;
        });
      },
    );
  }

//* ▲▲▲▲▲▲▲▲ code ▲▲▲▲▲▲▲▲ (do not modify or remove section marker)
//********************************************************************

}