[windows] Adds support for keyboard mapping. (#54227)

dev/manual_tests/lib/raw_keyboard.dart

@@ -109,6 +109,11 @@ class _HardwareKeyDemoState extends State<RawKeyboardDemo> {
             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)})'));
           }
           dataText.add(Text('logical: ${_event.logicalKey}'));
           dataText.add(Text('physical: ${_event.physicalKey}'));

dev/tools/gen_keycodes/bin/gen_keycodes.dart

@@ -18,8 +18,8 @@ import 'package:gen_keycodes/utils.dart';
 /// Get contents of the file that contains the key code mapping in Chromium
 /// source.
 Future<String> getChromiumConversions() async {
-  final Uri keyCodeMapUri = Uri.parse('https://cs.chromium.org/codesearch/f/chromium/src/ui/events/keycodes/dom/dom_code_data.inc');
-  return await http.read(keyCodeMapUri);
+  final Uri keyCodesUri = Uri.parse('https://chromium.googlesource.com/codesearch/chromium/src/+/refs/heads/master/ui/events/keycodes/dom/dom_code_data.inc?format=TEXT');
+  return utf8.decode(base64.decode(await http.read(keyCodesUri)));
 }
 
 /// Get contents of the file that contains the key codes in Android source.

dev/tools/gen_keycodes/data/key_data.json

@@ -191,29 +191,6 @@
       "windows": null
     }
   },
-  "privacyScreenToggle": {
-    "names": {
-      "domkey": "PrivacyScreenToggle",
-      "android": null,
-      "english": "Privacy Screen Toggle",
-      "chromium": "privacyScreenToggle",
-      "glfw": null,
-      "windows": null
-    },
-    "scanCodes": {
-      "android": null,
-      "usb": 23,
-      "linux": 633,
-      "xkb": 641,
-      "windows": null,
-      "macos": null
-    },
-    "keyCodes": {
-      "android": null,
-      "glfw": null,
-      "windows": null
-    }
-  },
   "sleep": {
     "names": {
       "domkey": "Sleep",
@@ -3080,7 +3057,9 @@
       "glfw": [
         "RIGHT"
       ],
-      "windows": null
+      "windows": [
+        "RIGHT"
+      ]
     },
     "scanCodes": {
       "android": [
@@ -3099,7 +3078,9 @@
       "glfw": [
         262
       ],
-      "windows": null
+      "windows": [
+        39
+      ]
     }
   },
   "arrowLeft": {
@@ -3113,7 +3094,9 @@
       "glfw": [
         "LEFT"
       ],
-      "windows": null
+      "windows": [
+        "LEFT"
+      ]
     },
     "scanCodes": {
       "android": [
@@ -3132,7 +3115,9 @@
       "glfw": [
         263
       ],
-      "windows": null
+      "windows": [
+        37
+      ]
     }
   },
   "arrowDown": {
@@ -3146,7 +3131,9 @@
       "glfw": [
         "DOWN"
       ],
-      "windows": null
+      "windows": [
+        "DOWN"
+      ]
     },
     "scanCodes": {
       "android": [
@@ -3165,7 +3152,9 @@
       "glfw": [
         264
       ],
-      "windows": null
+      "windows": [
+        40
+      ]
     }
   },
   "arrowUp": {
@@ -3179,7 +3168,9 @@
       "glfw": [
         "UP"
       ],
-      "windows": null
+      "windows": [
+        "UP"
+      ]
     },
     "scanCodes": {
       "android": [
@@ -3198,7 +3189,9 @@
       "glfw": [
         265
       ],
-      "windows": null
+      "windows": [
+        38
+      ]
     }
   },
   "numLock": {

dev/tools/gen_keycodes/data/key_name_to_windows_name.json

@@ -31,10 +31,10 @@
   "next": ["NEXT"],
   "end": ["END"],
   "home": ["HOME"],
-  "leftArrow": ["LEFT"],
-  "upArrow": ["UP"],
-  "rightArrow": ["RIGHT"],
-  "downArrow": ["DOWN"],
+  "arrowLeft": ["LEFT"],
+  "arrowUp": ["UP"],
+  "arrowRight": ["RIGHT"],
+  "arrowDown": ["DOWN"],
   "select": ["SELECT"],
   "print": ["PRINT"],
   "execute": ["EXECUTE"],

dev/tools/gen_keycodes/data/keyboard_key.tmpl

@@ -19,7 +19,7 @@ import 'package:flutter/foundation.dart';
 ///    that are returned from [RawKeyEvent.physicalKey].
 ///  * [LogicalKeyboardKey], a class with static values that describe the keys
 ///    that are returned from [RawKeyEvent.logicalKey].
-abstract class KeyboardKey extends Diagnosticable {
+abstract class KeyboardKey with Diagnosticable {
   /// A const constructor so that subclasses may be const.
   const KeyboardKey();
 }

dev/tools/gen_keycodes/data/keyboard_maps.tmpl

@@ -92,3 +92,20 @@ const Map<String, PhysicalKeyboardKey> kWebToPhysicalKey = <String, PhysicalKeyb
 const Map<String, LogicalKeyboardKey> kWebNumPadMap = <String, LogicalKeyboardKey>{
 @@@WEB_NUMPAD_MAP@@@
 };
+
+/// Maps Windows KeyboardEvent codes to the matching [LogicalKeyboardKey].
+const Map<int, LogicalKeyboardKey> kWindowsToLogicalKey = <int, LogicalKeyboardKey>{
+@@@WINDOWS_LOGICAL_KEY_MAP@@@
+};
+
+/// Maps Windows KeyboardEvent codes to the matching [PhysicalKeyboardKey].
+const Map<int, PhysicalKeyboardKey> kWindowsToPhysicalKey = <int, PhysicalKeyboardKey>{
+@@@WINDOWS_PHYSICAL_KEY_MAP@@@
+};
+
+/// A map of Windows KeyboardEvent codes which have printable representations, but appear
+/// on the number pad. Used to provide different key objects for keys like
+/// KEY_EQUALS and NUMPAD_EQUALS.
+const Map<int, LogicalKeyboardKey> kWindowsNumPadMap = <int, LogicalKeyboardKey>{
+@@@WINDOWS_NUMPAD_MAP@@@
+};

dev/tools/gen_keycodes/lib/dart_code_gen.dart

@@ -225,6 +225,43 @@ $otherComments  static const LogicalKeyboardKey $constantName = LogicalKeyboardK
     return androidScanCodeMap.toString().trimRight();
   }
 
+  /// This generates the map of Windows scan codes to physical keys.
+  String get windowsScanCodeMap {
+    final StringBuffer windowsScanCodeMap = StringBuffer();
+    for (final Key entry in keyData.data) {
+      if (entry.windowsScanCode != null) {
+        windowsScanCodeMap.writeln('  ${toHex(entry.windowsScanCode)}: PhysicalKeyboardKey.${entry.constantName},');
+      }
+    }
+    return windowsScanCodeMap.toString().trimRight();
+  }
+
+  /// This generates the map of Windows number pad key codes to logical keys.
+  String get windowsNumpadMap {
+    final StringBuffer windowsNumPadMap = StringBuffer();
+    for (final Key entry in numpadKeyData) {
+      if (entry.windowsKeyCodes != null){
+        for (final int code in entry.windowsKeyCodes) {
+          windowsNumPadMap.writeln('  $code: LogicalKeyboardKey.${entry.constantName},');
+        }
+      }
+    }
+    return windowsNumPadMap.toString().trimRight();
+  }
+
+  /// This generates the map of Windows key codes to logical keys.
+  String get windowsKeyCodeMap {
+    final StringBuffer windowsKeyCodeMap = StringBuffer();
+    for (final Key entry in keyData.data) {
+      if (entry.windowsKeyCodes != null) {
+        for (final int code in entry.windowsKeyCodes) {
+          windowsKeyCodeMap.writeln('  $code: LogicalKeyboardKey.${entry.constantName},');
+        }
+      }
+    }
+    return windowsKeyCodeMap.toString().trimRight();
+  }
+
   /// This generates the map of macOS key codes to physical keys.
   String get macOsScanCodeMap {
     final StringBuffer macOsScanCodeMap = StringBuffer();
@@ -381,6 +418,9 @@ $otherComments  static const LogicalKeyboardKey $constantName = LogicalKeyboardK
       'WEB_LOGICAL_KEY_MAP': webLogicalKeyMap,
       'WEB_PHYSICAL_KEY_MAP': webPhysicalKeyMap,
       'WEB_NUMPAD_MAP': webNumpadMap,
+      'WINDOWS_LOGICAL_KEY_MAP': windowsKeyCodeMap,
+      'WINDOWS_PHYSICAL_KEY_MAP': windowsScanCodeMap,
+      'WINDOWS_NUMPAD_MAP': windowsNumpadMap,
     };
 
     final String template = File(path.join(flutterRoot.path, 'dev', 'tools', 'gen_keycodes', 'data', 'keyboard_maps.tmpl')).readAsStringSync();

packages/flutter/lib/services.dart

@@ -29,6 +29,7 @@ export 'src/services/raw_keyboard_fuchsia.dart';
 export 'src/services/raw_keyboard_linux.dart';
 export 'src/services/raw_keyboard_macos.dart';
 export 'src/services/raw_keyboard_web.dart';
+export 'src/services/raw_keyboard_windows.dart';
 export 'src/services/system_channels.dart';
 export 'src/services/system_chrome.dart';
 export 'src/services/system_navigator.dart';

packages/flutter/lib/src/services/raw_keyboard.dart

@@ -14,6 +14,7 @@ import 'raw_keyboard_fuchsia.dart';
 import 'raw_keyboard_linux.dart';
 import 'raw_keyboard_macos.dart';
 import 'raw_keyboard_web.dart';
+import 'raw_keyboard_windows.dart';
 import 'system_channels.dart';
 
 /// An enum describing the side of the keyboard that a key is on, to allow
@@ -296,6 +297,14 @@ abstract class RawKeyEvent with Diagnosticable {
           metaState: message['metaState'] as int,
         );
         break;
+      case 'windows':
+        data = RawKeyEventDataWindows(
+          keyCode: message['keyCode'] as int,
+          scanCode: message['scanCode'] as int,
+          characterCodePoint: message['characterCodePoint'] as int,
+          modifiers: message['modifiers'] as int,
+        );
+        break;
       default:
         // Raw key events are not yet implemented  on iOS or other platforms,
         // but this exception isn't hit, because the engine never sends these

packages/flutter_test/lib/src/event_simulation.dart

@@ -40,6 +40,7 @@ class KeyEventSimulator {
       case 'macos':
       case 'linux':
       case 'web':
+      case 'windows':
         return true;
     }
     return false;
@@ -62,6 +63,9 @@ class KeyEventSimulator {
       case 'linux':
         map = kLinuxToPhysicalKey;
         break;
+      case 'windows':
+        map = kWindowsToPhysicalKey;
+        break;
       case 'web':
       // web doesn't have int type code
         return null;
@@ -95,6 +99,9 @@ class KeyEventSimulator {
       case 'linux':
         map = kGlfwToLogicalKey;
         break;
+      case 'windows':
+        map = kWindowsToLogicalKey;
+        break;
     }
     for (final int code in map.keys) {
       if (key.keyId == map[code].keyId) {
@@ -132,6 +139,9 @@ class KeyEventSimulator {
       case 'web':
         map = kWebToPhysicalKey;
         break;
+      case 'windows':
+        map = kWindowsToPhysicalKey;
+        break;
     }
     for (final PhysicalKeyboardKey physicalKey in map.values) {
       if (key.debugName == physicalKey.debugName) {
@@ -195,6 +205,12 @@ class KeyEventSimulator {
         result['code'] = _getWebKeyCode(key);
         result['key'] = '';
         result['metaState'] = _getWebModifierFlags(key, isDown);
+        break;
+      case 'windows':
+        result['keyCode'] = keyCode;
+        result['scanCode'] = scanCode;
+        result['characterCodePoint'] = key.keyLabel?.codeUnitAt(0) ?? 0;
+        result['modifiers'] = _getWindowsModifierFlags(key, isDown);
     }
     return result;
   }
@@ -272,6 +288,59 @@ class KeyEventSimulator {
     return result;
   }
 
+  static int _getWindowsModifierFlags(LogicalKeyboardKey newKey, bool isDown) {
+    int result = 0;
+    final Set<LogicalKeyboardKey> pressed = RawKeyboard.instance.keysPressed;
+    if (isDown) {
+      pressed.add(newKey);
+    } else {
+      pressed.remove(newKey);
+    }
+    if (pressed.contains(LogicalKeyboardKey.shift)) {
+      result |= RawKeyEventDataWindows.modifierShift;
+    }
+    if (pressed.contains(LogicalKeyboardKey.shiftLeft)) {
+      result |= RawKeyEventDataWindows.modifierLeftShift;
+    }
+    if (pressed.contains(LogicalKeyboardKey.shiftRight)) {
+      result |= RawKeyEventDataWindows.modifierRightShift;
+    }
+    if (pressed.contains(LogicalKeyboardKey.metaLeft)) {
+      result |= RawKeyEventDataWindows.modifierLeftMeta;
+    }
+    if (pressed.contains(LogicalKeyboardKey.metaRight)) {
+      result |= RawKeyEventDataWindows.modifierRightMeta;
+    }
+    if (pressed.contains(LogicalKeyboardKey.control)) {
+      result |= RawKeyEventDataWindows.modifierControl;
+    }
+    if (pressed.contains(LogicalKeyboardKey.controlLeft)) {
+      result |= RawKeyEventDataWindows.modifierLeftControl;
+    }
+    if (pressed.contains(LogicalKeyboardKey.controlRight)) {
+      result |= RawKeyEventDataWindows.modifierRightControl;
+    }
+    if (pressed.contains(LogicalKeyboardKey.alt)) {
+      result |= RawKeyEventDataWindows.modifierAlt;
+    }
+    if (pressed.contains(LogicalKeyboardKey.altLeft)) {
+      result |= RawKeyEventDataWindows.modifierLeftAlt;
+    }
+    if (pressed.contains(LogicalKeyboardKey.altRight)) {
+      result |= RawKeyEventDataWindows.modifierRightAlt;
+    }
+    if (pressed.contains(LogicalKeyboardKey.capsLock)) {
+      result |= RawKeyEventDataWindows.modifierCaps;
+    }
+    if (pressed.contains(LogicalKeyboardKey.numLock)) {
+      result |= RawKeyEventDataWindows.modifierNumLock;
+    }
+    if (pressed.contains(LogicalKeyboardKey.scrollLock)) {
+      result |= RawKeyEventDataWindows.modifierScrollLock;
+    }
+    return result;
+  }
+
   static int _getFuchsiaModifierFlags(LogicalKeyboardKey newKey, bool isDown) {
     int result = 0;
     final Set<LogicalKeyboardKey> pressed = RawKeyboard.instance.keysPressed;