94 lines
2.7 KiB
Dart
94 lines
2.7 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:cpd_2022_energy/variables.dart';
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import 'package:provider/provider.dart';
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class InputForm extends StatelessWidget {
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const InputForm({super.key});
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@override
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Widget build(BuildContext context) {
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double _startH = 0;
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double _endH = 0;
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double _startG = 0;
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double _endG = 0;
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double _masse = 0;
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final formKey = GlobalKey<FormState>();
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final data = Provider.of<variables>(context);
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// wird bei onPressed mit Button ausgelöst
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void _anzeigen() {
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data.setStartH(_startH);
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data.setEndH(_endH);
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data.setStartGes(_startG);
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data.setEndGes(_endG);
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data.setMasse(_masse);
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}
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return Container(
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padding: EdgeInsets.symmetric(vertical: 20, horizontal: 30),
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child: Form(
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key: formKey,
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child: Column(
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mainAxisAlignment: MainAxisAlignment.start,
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children: <Widget>[
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TextFormField(
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decoration: const InputDecoration(
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labelText: 'Starthöhe',
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hintText: 'in Meter',
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),
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onChanged: (eingabe) {
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_startH = eingabe as double;
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},
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),
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TextFormField(
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decoration: const InputDecoration(
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labelText: 'Endhöhe',
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hintText: 'in Meter',
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),
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onChanged: (eingabe) {
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_endH = double.parse(eingabe);
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},
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),
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TextFormField(
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decoration: const InputDecoration(
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labelText: 'Startgeschwindigkeit',
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hintText: 'in Meter pro Sekunde',
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),
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onChanged: (eingabe) {
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_startG = double.parse(eingabe);
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},
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),
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TextFormField(
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decoration: const InputDecoration(
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labelText: 'Endgeschwindigkeit',
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hintText: 'in Meter pro Sekunde',
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),
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onChanged: (eingabe) {
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_endG = double.parse(eingabe);
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},
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),
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TextFormField(
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decoration: const InputDecoration(
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labelText: 'Masse',
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hintText: 'in KG',
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),
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onChanged: (eingabe) {
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_masse = double.parse(eingabe);
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},
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),
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TextButton(
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onPressed: () => _anzeigen(),
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child: Text('Berechnen'),
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style: TextButton.styleFrom(
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foregroundColor: Colors.white,
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backgroundColor: 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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);
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}
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}
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