ruler_picker_bn 0.0.3

Flutter package for ruler type value picker. You can get horizontal and vertical ruler view with the package.

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:ruler_picker_bn/ruler_picker_bn.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Ruler Picker Example',
      theme: ThemeData(
        // This is the theme of your application.
        //
        // Try running your application with "flutter run". You'll see the
        // application has a blue toolbar. Then, without quitting the app, try
        // changing the primarySwatch below to Colors.green and then invoke
        // "hot reload" (press "r" in the console where you ran "flutter run",
        // or simply save your changes to "hot reload" in a Flutter IDE).
        // Notice that the counter didn't reset back to zero; the application
        // is not restarted.
        primarySwatch: Colors.blue,
      ),
      home: const MyHomePage(title: 'Flutter Ruler Picker Example'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({Key? key, required this.title}) : super(key: key);

  // This widget is the home page of your application. It is stateful, meaning
  // that it has a State object (defined below) that contains fields that affect
  // how it looks.

  // This class is the configuration for the state. It holds the values (in this
  // case the title) provided by the parent (in this case the App widget) and
  // used by the build method of the State. Fields in a Widget subclass are
  // always marked "final".

  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int valueKG = 0;
  int valueCM = 0;
  @override
  Widget build(BuildContext context) {
    // This method is rerun every time setState is called, for instance as done
    // by the _incrementCounter method above.
    //
    // The Flutter framework has been optimized to make rerunning build methods
    // fast, so that you can just rebuild anything that needs updating rather
    // than having to individually change instances of widgets.
    return Scaffold(
      appBar: AppBar(
        // Here we take the value from the MyHomePage object that was created by
        // the App.build method, and use it to set our appbar title.
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          crossAxisAlignment: CrossAxisAlignment.center,
          children: [
            Row(
              mainAxisAlignment: MainAxisAlignment.start,
              crossAxisAlignment: CrossAxisAlignment.center,
              mainAxisSize: MainAxisSize.min,
              children: [
                Padding(
                  padding: const EdgeInsets.only(right: 8.0),
                  child: Text('${valueKG.toString().padLeft(3, '0')} kg'),
                ),
                SizedBox(
                  width: 200,
                  height: 75,
                  child: RulerPicker(
                    onChange: (val) {
                      setState(() {
                        valueKG = val;
                      });
                    },
                    background: Colors.white,
                    lineColor: Colors.black,
                    direction: Axis.horizontal,
                    startValue: 70,
                    maxValue: 200,
                  ),
                ),
              ],
            ),
            Row(
              mainAxisAlignment: MainAxisAlignment.start,
              crossAxisAlignment: CrossAxisAlignment.center,
              mainAxisSize: MainAxisSize.min,
              children: [
                Padding(
                  padding: const EdgeInsets.only(right: 8.0),
                  child: Text('${valueCM.toString().padLeft(3, '0')} cm'),
                ),
                SizedBox(
                  width: 75,
                  height: 200,
                  child: RulerPicker(
                    onChange: (val) {
                      setState(() {
                        valueCM = val;
                      });
                    },
                    background: Colors.white,
                    lineColor: Colors.black,
                    direction: Axis.vertical,
                  ),
                ),
              ],
            ),
          ],
        ),
      ),
    );
  }
}