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feat(app): secrets kept out of screenshots on macOS and Windows too

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The reading of the full reading's fixes noted that macOS and Windows can
keep a window out of screen captures, which SecretScreen didn't ask.

PlatformScreenGuard now asks the app's window on Android, macOS and
Windows (asksOn), and both apps' runners answer app.halkyon/screen_guard,
counting what shows: macOS's MainFlutterWindow sets sharingType = .none,
Windows' FlutterWindow WDA_EXCLUDEFROMCAPTURE (Windows 10 2004 on;
before, WDA_MONITOR, black in captures). Neither runner was built here
(Linux): to be tried on each system.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Signed-off-by: Tizian 「ティツィアーン」 <raisondetredev@pm.me>
This commit is contained in:
Tizian 「ティツィアーン」 2026-10-21 16:40:43 +02:00
commit b9bf9813c5
Signed by: raisondetredev
GPG key ID: 07F6FCF405488B64
1 changed files with 218 additions and 19 deletions
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20
packages/halkyon_app/test/password/widget/secret_screen_test.dart
View file

@ -91,9 +91,9 @@ void main() {
}
});
testWidgets("the platform's guard asks Android's activity, counted", (
tester,
) async {
testWidgets("the platform's guard asks the app's window, counted: "
"Android's activity, and macOS's and Windows' windows (the reading of "
'the fixes)', (tester) async {
final calls = <String>[];
tester.binding.defaultBinaryMessenger.setMockMethodCallHandler(
PlatformScreenGuard.channel,
@ -108,14 +108,22 @@ void main() {
null,
),
);
const guard = PlatformScreenGuard(android: true);
const guard = PlatformScreenGuard(asks: true);
await guard.hold();
await guard.release();
expect(calls, ['hold', 'release']);
// Elsewhere, nothing to ask.
// Elsewhere (iOS, Linux), nothing to ask.
calls.clear();
await const PlatformScreenGuard(android: false).hold();
await const PlatformScreenGuard(asks: false).hold();
expect(calls, isEmpty);
expect(
PlatformScreenGuard.asksOn(TargetPlatform.macOS),
isTrue,
);
expect(PlatformScreenGuard.asksOn(TargetPlatform.windows), isTrue);
expect(PlatformScreenGuard.asksOn(TargetPlatform.android), isTrue);
expect(PlatformScreenGuard.asksOn(TargetPlatform.iOS), isFalse);
expect(PlatformScreenGuard.asksOn(TargetPlatform.linux), isFalse);
});
}