flutter/dev/manual_tests/lib/hardware_keyboard.dart
Michael Goderbauer 5491c8c146
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---------

Co-authored-by: Kate Lovett <katelovett@google.com>
Co-authored-by: LongCatIsLooong <31859944+LongCatIsLooong@users.noreply.github.com>
2024-12-19 20:06:21 +00:00

91 lines
2.7 KiB
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.
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
void main() {
runApp(
MaterialApp(
title: 'Hardware Key Demo',
home: Scaffold(
appBar: AppBar(title: const Text('Hardware Key Demo')),
body: const Center(child: HardwareKeyboardDemo()),
),
),
);
}
class HardwareKeyboardDemo extends StatefulWidget {
const HardwareKeyboardDemo({super.key});
@override
State<HardwareKeyboardDemo> createState() => _HardwareKeyboardDemoState();
}
class _HardwareKeyboardDemoState extends State<HardwareKeyboardDemo> {
final FocusNode _focusNode = FocusNode();
KeyEvent? _event;
@override
void dispose() {
_focusNode.dispose();
super.dispose();
}
KeyEventResult _handleKeyEvent(FocusNode node, KeyEvent event) {
setState(() {
_event = event;
});
return KeyEventResult.ignored;
}
@override
Widget build(BuildContext context) {
final TextTheme textTheme = Theme.of(context).textTheme;
return Focus(
focusNode: _focusNode,
onKeyEvent: _handleKeyEvent,
autofocus: true,
child: AnimatedBuilder(
animation: _focusNode,
builder: (BuildContext context, Widget? child) {
if (!_focusNode.hasFocus) {
return GestureDetector(
onTap: () {
_focusNode.requestFocus();
},
child: Text('Tap to focus', style: textTheme.headlineMedium),
);
}
if (_event == null) {
return Text('Press a key', style: textTheme.headlineMedium);
}
final List<Widget> dataText = <Widget>[
Text('${_event.runtimeType}'),
if (_event?.character?.isNotEmpty ?? false)
Text('character produced: "${_event?.character}"'),
];
dataText.add(Text('logical: ${_event?.logicalKey}'));
dataText.add(Text('physical: ${_event?.physicalKey}'));
if (_event?.character != null) {
dataText.add(Text('character: ${_event?.character}'));
}
final List<String> pressed = <String>['Pressed:'];
for (final LogicalKeyboardKey key in HardwareKeyboard.instance.logicalKeysPressed) {
pressed.add(key.debugName!);
}
dataText.add(Text(pressed.join(' ')));
return DefaultTextStyle(
style: textTheme.titleMedium!,
child: Column(mainAxisAlignment: MainAxisAlignment.center, children: dataText),
);
},
),
);
}
}