Change some usage of RawKeyEvent to KeyEvent in preparation for deprecation (#136420)

## Description

This converts some usages of `RawKeyEvent` to `KeyEvent` to prepare the repo for deprecation of `RawKeyEvent`, and swaps out the `raw_keyboard.dart` manual test for `hardware_keyboard.dart`.

## Related Issues
 - https://github.com/flutter/flutter/issues/136419

## Tests
 - Just refactoring code, no semantic changes.

dev/manual_tests/lib/focus.dart

@@ -91,13 +91,14 @@ class _FocusDemoState extends State<FocusDemo> {
     super.dispose();
   }
 
-  KeyEventResult _handleKeyPress(FocusNode node, RawKeyEvent event) {
-    if (event is RawKeyDownEvent) {
+  KeyEventResult _handleKeyPress(FocusNode node, KeyEvent event) {
+    if (event is KeyDownEvent) {
       print('Scope got key event: ${event.logicalKey}, $node');
-      print('Keys down: ${RawKeyboard.instance.keysPressed}');
+      print('Keys down: ${HardwareKeyboard.instance.logicalKeysPressed}');
       if (event.logicalKey == LogicalKeyboardKey.tab) {
         debugDumpFocusTree();
-        if (event.isShiftPressed) {
+        if (HardwareKeyboard.instance.logicalKeysPressed.contains(LogicalKeyboardKey.shiftLeft)
+            || HardwareKeyboard.instance.logicalKeysPressed.contains(LogicalKeyboardKey.shiftRight)) {
           print('Moving to previous.');
           node.previousFocus();
           return KeyEventResult.handled;
@@ -135,7 +136,7 @@ class _FocusDemoState extends State<FocusDemo> {
       policy: ReadingOrderTraversalPolicy(),
       child: FocusScope(
         debugLabel: 'Scope',
-        onKey: _handleKeyPress,
+        onKeyEvent: _handleKeyPress,
         autofocus: true,
         child: DefaultTextStyle(
           style: textTheme.headlineMedium!,

dev/manual_tests/lib/raw_keyboard.dart → dev/manual_tests/lib/hardware_keyboard.dart

@@ -13,22 +13,22 @@ void main() {
         title: const Text('Hardware Key Demo'),
       ),
       body: const Center(
-        child: RawKeyboardDemo(),
+        child: HardwareKeyboardDemo(),
       ),
     ),
   ));
 }
 
-class RawKeyboardDemo extends StatefulWidget {
-  const RawKeyboardDemo({super.key});
+class HardwareKeyboardDemo extends StatefulWidget {
+  const HardwareKeyboardDemo({super.key});
 
   @override
-  State<RawKeyboardDemo> createState() => _HardwareKeyDemoState();
+  State<HardwareKeyboardDemo> createState() => _HardwareKeyboardDemoState();
 }
 
-class _HardwareKeyDemoState extends State<RawKeyboardDemo> {
+class _HardwareKeyboardDemoState extends State<HardwareKeyboardDemo> {
   final FocusNode _focusNode = FocusNode();
-  RawKeyEvent? _event;
+  KeyEvent? _event;
 
   @override
   void dispose() {
@@ -36,27 +36,19 @@ class _HardwareKeyDemoState extends State<RawKeyboardDemo> {
     super.dispose();
   }
 
-  KeyEventResult _handleKeyEvent(FocusNode node, RawKeyEvent event) {
+  KeyEventResult _handleKeyEvent(FocusNode node, KeyEvent event) {
     setState(() {
       _event = event;
     });
     return KeyEventResult.ignored;
   }
 
-  String _asHex(int value) => '0x${value.toRadixString(16)}';
-
-  String _getEnumName(dynamic enumItem) {
-    final String name = '$enumItem';
-    final int index = name.indexOf('.');
-    return index == -1 ? name : name.substring(index + 1);
-  }
-
   @override
   Widget build(BuildContext context) {
     final TextTheme textTheme = Theme.of(context).textTheme;
     return Focus(
       focusNode: _focusNode,
-      onKey: _handleKeyEvent,
+      onKeyEvent: _handleKeyEvent,
       autofocus: true,
       child: AnimatedBuilder(
         animation: _focusNode,
@@ -74,67 +66,17 @@ class _HardwareKeyDemoState extends State<RawKeyboardDemo> {
             return Text('Press a key', style: textTheme.headlineMedium);
           }
 
-          final RawKeyEventData? data = _event?.data;
-          final String? modifierList = data?.modifiersPressed.keys.map<String>(_getEnumName).join(', ').replaceAll('Modifier', '');
           final List<Widget> dataText = <Widget>[
             Text('${_event.runtimeType}'),
             if (_event?.character?.isNotEmpty ?? false) Text('character produced: "${_event?.character}"'),
-            Text('modifiers set: $modifierList'),
           ];
-          if (data is RawKeyEventDataAndroid) {
-            const int combiningCharacterMask = 0x7fffffff;
-            final String codePointChar = String.fromCharCode(combiningCharacterMask & data.codePoint);
-            dataText.add(Text('codePoint: ${data.codePoint} (${_asHex(data.codePoint)}: $codePointChar)'));
-            final String plainCodePointChar = String.fromCharCode(combiningCharacterMask & data.plainCodePoint);
-            dataText.add(Text('plainCodePoint: ${data.plainCodePoint} (${_asHex(data.plainCodePoint)}: $plainCodePointChar)'));
-            dataText.add(Text('keyCode: ${data.keyCode} (${_asHex(data.keyCode)})'));
-            dataText.add(Text('scanCode: ${data.scanCode} (${_asHex(data.scanCode)})'));
-            dataText.add(Text('metaState: ${data.metaState} (${_asHex(data.metaState)})'));
-            dataText.add(Text('source: ${data.eventSource} (${_asHex(data.eventSource)})'));
-            dataText.add(Text('vendorId: ${data.vendorId} (${_asHex(data.vendorId)})'));
-            dataText.add(Text('productId: ${data.productId} (${_asHex(data.productId)})'));
-            dataText.add(Text('flags: ${data.flags} (${_asHex(data.flags)})'));
-            dataText.add(Text('repeatCount: ${data.repeatCount} (${_asHex(data.repeatCount)})'));
-          } else if (data is RawKeyEventDataFuchsia) {
-            dataText.add(Text('codePoint: ${data.codePoint} (${_asHex(data.codePoint)})'));
-            dataText.add(Text('hidUsage: ${data.hidUsage} (${_asHex(data.hidUsage)})'));
-            dataText.add(Text('modifiers: ${data.modifiers} (${_asHex(data.modifiers)})'));
-          } else if (data is RawKeyEventDataMacOs) {
-            dataText.add(Text('keyCode: ${data.keyCode} (${_asHex(data.keyCode)})'));
-            dataText.add(Text('characters: ${data.characters}'));
-            dataText.add(Text('charactersIgnoringModifiers: ${data.charactersIgnoringModifiers}'));
-            dataText.add(Text('modifiers: ${data.modifiers} (${_asHex(data.modifiers)})'));
-          } else if (data is RawKeyEventDataLinux) {
-            dataText.add(Text('keyCode: ${data.keyCode} (${_asHex(data.keyCode)})'));
-            dataText.add(Text('scanCode: ${data.scanCode}'));
-            dataText.add(Text('unicodeScalarValues: ${data.unicodeScalarValues}'));
-            dataText.add(Text('modifiers: ${data.modifiers} (${_asHex(data.modifiers)})'));
-          } else if (data is RawKeyEventDataWindows) {
-            dataText.add(Text('keyCode: ${data.keyCode} (${_asHex(data.keyCode)})'));
-            dataText.add(Text('scanCode: ${data.scanCode}'));
-            dataText.add(Text('characterCodePoint: ${data.characterCodePoint}'));
-            dataText.add(Text('modifiers: ${data.modifiers} (${_asHex(data.modifiers)})'));
-          } else if (data is RawKeyEventDataWeb) {
-            dataText.add(Text('key: ${data.key}'));
-            dataText.add(Text('code: ${data.code}'));
-            dataText.add(Text('metaState: ${data.metaState} (${_asHex(data.metaState)})'));
-          }
           dataText.add(Text('logical: ${_event?.logicalKey}'));
           dataText.add(Text('physical: ${_event?.physicalKey}'));
           if (_event?.character != null) {
             dataText.add(Text('character: ${_event?.character}'));
           }
-          for (final ModifierKey modifier in data!.modifiersPressed.keys) {
-            for (final KeyboardSide side in KeyboardSide.values) {
-              if (data.isModifierPressed(modifier, side: side)) {
-                dataText.add(
-                  Text('${_getEnumName(side)} ${_getEnumName(modifier).replaceAll('Modifier', '')} pressed'),
-                );
-              }
-            }
-          }
           final List<String> pressed = <String>['Pressed:'];
-          for (final LogicalKeyboardKey key in RawKeyboard.instance.keysPressed) {
+          for (final LogicalKeyboardKey key in HardwareKeyboard.instance.logicalKeysPressed) {
             pressed.add(key.debugName!);
           }
           dataText.add(Text(pressed.join(' ')));

examples/api/lib/services/keyboard_key/logical_keyboard_key.0.dart

@@ -46,7 +46,7 @@ class _MyKeyExampleState extends State<MyKeyExample> {
 
   // Handles the key events from the Focus widget and updates the
   // _message.
-  KeyEventResult _handleKeyEvent(FocusNode node, RawKeyEvent event) {
+  KeyEventResult _handleKeyEvent(FocusNode node, KeyEvent event) {
     setState(() {
       if (event.logicalKey == LogicalKeyboardKey.keyQ) {
         _message = 'Pressed the "Q" key!';
@@ -73,7 +73,7 @@ class _MyKeyExampleState extends State<MyKeyExample> {
         style: textTheme.headlineMedium!,
         child: Focus(
           focusNode: _focusNode,
-          onKey: _handleKeyEvent,
+          onKeyEvent: _handleKeyEvent,
           child: ListenableBuilder(
             listenable: _focusNode,
             builder: (BuildContext context, Widget? child) {

examples/api/lib/services/keyboard_key/physical_keyboard_key.0.dart

@@ -46,7 +46,7 @@ class _MyPhysicalKeyExampleState extends State<MyPhysicalKeyExample> {
 
 // Handles the key events from the RawKeyboardListener and update the
 // _message.
-  KeyEventResult _handleKeyEvent(FocusNode node, RawKeyEvent event) {
+  KeyEventResult _handleKeyEvent(FocusNode node, KeyEvent event) {
     setState(() {
       if (event.physicalKey == PhysicalKeyboardKey.keyA) {
         _message = 'Pressed the key next to CAPS LOCK!';
@@ -73,7 +73,7 @@ class _MyPhysicalKeyExampleState extends State<MyPhysicalKeyExample> {
         style: textTheme.headlineMedium!,
         child: Focus(
           focusNode: _focusNode,
-          onKey: _handleKeyEvent,
+          onKeyEvent: _handleKeyEvent,
           child: ListenableBuilder(
             listenable: _focusNode,
             builder: (BuildContext context, Widget? child) {

examples/api/lib/widgets/focus_manager/focus_node.0.dart

@@ -41,7 +41,7 @@ class _ColorfulButtonState extends State<ColorfulButton> {
     super.initState();
     _node = FocusNode(debugLabel: 'Button');
     _node.addListener(_handleFocusChange);
-    _nodeAttachment = _node.attach(context, onKey: _handleKeyPress);
+    _nodeAttachment = _node.attach(context, onKeyEvent: _handleKeyPress);
   }
 
   void _handleFocusChange() {
@@ -52,8 +52,8 @@ class _ColorfulButtonState extends State<ColorfulButton> {
     }
   }
 
-  KeyEventResult _handleKeyPress(FocusNode node, RawKeyEvent event) {
-    if (event is RawKeyDownEvent) {
+  KeyEventResult _handleKeyPress(FocusNode node, KeyEvent event) {
+    if (event is KeyDownEvent) {
       debugPrint('Focus node ${node.debugLabel} got key event: ${event.logicalKey}');
       if (event.logicalKey == LogicalKeyboardKey.keyR) {
         debugPrint('Changing color to red.');

examples/api/lib/widgets/focus_scope/focus.0.dart

@@ -33,8 +33,8 @@ class FocusExample extends StatefulWidget {
 class _FocusExampleState extends State<FocusExample> {
   Color _color = Colors.white;
 
-  KeyEventResult _handleKeyPress(FocusNode node, RawKeyEvent event) {
-    if (event is RawKeyDownEvent) {
+  KeyEventResult _handleKeyPress(FocusNode node, KeyEvent event) {
+    if (event is KeyDownEvent) {
       debugPrint('Focus node ${node.debugLabel} got key event: ${event.logicalKey}');
       if (event.logicalKey == LogicalKeyboardKey.keyR) {
         debugPrint('Changing color to red.');
@@ -68,7 +68,7 @@ class _FocusExampleState extends State<FocusExample> {
       child: DefaultTextStyle(
         style: textTheme.headlineMedium!,
         child: Focus(
-          onKey: _handleKeyPress,
+          onKeyEvent: _handleKeyPress,
           debugLabel: 'Button',
           child: Builder(
             builder: (BuildContext context) {