88 lines
2.3 KiB
Dart
88 lines
2.3 KiB
Dart
import 'package:cabo_counter/core/custom_theme.dart';
|
|
import 'package:flutter/cupertino.dart'; // Für iOS-Style
|
|
|
|
/// A custom stepper widget for incrementing and decrementing a value.
|
|
///
|
|
/// The [CustomStepper] widget allows increasing and decreasing a value
|
|
/// within a defined range ([minValue] to [maxValue]) in fixed steps.
|
|
///
|
|
/// Properties:
|
|
/// - [minValue]: The minimum value.
|
|
/// - [maxValue]: The maximum value.
|
|
/// - [initialValue]: The initial value (optional, defaults to [minValue]).
|
|
/// - [step]: The step size.
|
|
/// - [onChanged]: Callback triggered when the value changes.
|
|
class CustomStepper extends StatefulWidget {
|
|
final int minValue;
|
|
final int maxValue;
|
|
final int? initialValue;
|
|
final int step;
|
|
final ValueChanged<int> onChanged;
|
|
const CustomStepper({
|
|
super.key,
|
|
required this.minValue,
|
|
required this.maxValue,
|
|
required this.step,
|
|
required this.onChanged,
|
|
this.initialValue,
|
|
});
|
|
|
|
@override
|
|
// ignore: library_private_types_in_public_api
|
|
_CustomStepperState createState() => _CustomStepperState();
|
|
}
|
|
|
|
class _CustomStepperState extends State<CustomStepper> {
|
|
late int _value;
|
|
|
|
@override
|
|
void initState() {
|
|
super.initState();
|
|
final start = widget.initialValue ?? widget.minValue;
|
|
_value = start.clamp(widget.minValue, widget.maxValue);
|
|
}
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
return Row(
|
|
mainAxisSize: MainAxisSize.min,
|
|
mainAxisAlignment: MainAxisAlignment.end,
|
|
children: [
|
|
CupertinoButton(
|
|
padding: EdgeInsets.zero,
|
|
onPressed: _decrement,
|
|
child: const Icon(CupertinoIcons.minus),
|
|
),
|
|
Padding(
|
|
padding: const EdgeInsets.symmetric(horizontal: 12.0),
|
|
child: Text('$_value',
|
|
style: TextStyle(fontSize: 18, color: CustomTheme.white)),
|
|
),
|
|
CupertinoButton(
|
|
padding: EdgeInsets.zero,
|
|
onPressed: _increment,
|
|
child: const Icon(CupertinoIcons.add),
|
|
),
|
|
],
|
|
);
|
|
}
|
|
|
|
void _increment() {
|
|
if (_value + widget.step <= widget.maxValue) {
|
|
setState(() {
|
|
_value += widget.step;
|
|
widget.onChanged.call(_value);
|
|
});
|
|
}
|
|
}
|
|
|
|
void _decrement() {
|
|
if (_value - widget.step >= widget.minValue) {
|
|
setState(() {
|
|
_value -= widget.step;
|
|
widget.onChanged.call(_value);
|
|
});
|
|
}
|
|
}
|
|
}
|