81 lines
1.7 KiB
Dart
81 lines
1.7 KiB
Dart
import 'package:flutter/material.dart';
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class CounterInput extends StatefulWidget {
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final double initialValue;
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final ValueChanged<double> onChanged;
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const CounterInput({
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super.key,
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this.initialValue = 0,
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required this.onChanged,
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});
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@override
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CounterInputState createState() => CounterInputState();
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}
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class CounterInputState extends State<CounterInput> {
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late double _value;
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@override
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void initState() {
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super.initState();
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_value = widget.initialValue;
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}
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void _increment() {
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setState(() {
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_value += 0.25;
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});
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widget.onChanged(_value);
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}
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void _decrement() {
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if (_value > 0.25) {
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setState(() {
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_value -= 0.25;
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});
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widget.onChanged(_value);
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}
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}
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void _onChanged(String text) {
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double? parsedValue = double.tryParse(text);
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if (parsedValue != null && parsedValue >= 0) {
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setState(() {
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_value = parsedValue;
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});
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widget.onChanged(_value);
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}
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}
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@override
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Widget build(BuildContext context) {
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return Row(
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children: [
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IconButton(
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onPressed: _decrement,
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icon: Icon(Icons.remove),
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color: Colors.red,
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),
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SizedBox(
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width: 60,
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child: TextField(
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onChanged: _onChanged,
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controller: TextEditingController(text: _value.toStringAsFixed(2)),
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keyboardType: TextInputType.numberWithOptions(decimal: true),
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textAlign: TextAlign.center,
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decoration: InputDecoration(border: OutlineInputBorder()),
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),
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),
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IconButton(
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onPressed: _increment,
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icon: Icon(Icons.add),
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color: Colors.green,
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),
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],
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);
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}
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}
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