45aac312a8
Phase 1c+1d of the ux.camera plan (see ~/banlu/plans/ux_camera.md).
lib/src/camera/camera.dart — UxCameraController (ValueNotifier),
UxCameraValue, UxCameraDescription,
enums, UxCameraException,
uxAvailableCameras().
lib/src/camera/camera_backend.dart — abstract UxCameraBackend +
UxCameraCreateResult + sealed
UxCameraEvent variants.
lib/src/camera/camera_channel.dart — MethodChannelUxCameraBackend over
ux/camera + ux/camera/events. Per-
handle event demux. Maps
PlatformException → UxCameraException.
lib/src/camera/camera_preview.dart — UxCameraPreview: Texture-backed,
Hero-flightable preview widget.
lib/src/testing/fake_camera.dart — FakeUxCameraBackend with per-method
call lists + emitXxx event injection.
Exported from package:ux/testing.dart.
test/camera/camera_controller_test — 16 tests covering init/dispose,
orientation events, takePicture
(explicit + UxSensor fallback),
startVideoRecording / stop,
flip, flash, lock/unlock,
multi-instance, error propagation.
test/camera/camera_channel_test — 10 tests pinning the wire format
for every method + PlatformException
mapping.
Orientation snapshot for capture is computed Dart-side and passed in as an
explicit arg to takePicture / startVideoRecording (default falls back to
UxSensor.orientation at call time). Native never queries UIDevice itself
for the snapshot — Dart-side fakes drive orientation deterministically.
Native plugin code lands in Phase 2+; today every channel call throws
MissingPluginException at runtime, which is fine — the controller is only
mounted from the camera page once Phase 5 cuts over. The test backend
already exercises the full controller surface.
30 lines
1001 B
Dart
30 lines
1001 B
Dart
import 'package:flutter/widgets.dart';
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import 'camera.dart' show UxCameraController, UxCameraValue;
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/// Renders the live preview for [controller] into a [Texture]. Sizes
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/// itself to the parent — wrap in `AspectRatio` / `FittedBox` / `Hero`
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/// to control framing.
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///
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/// While the controller is not yet initialized, this falls back to a
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/// transparent placeholder. The widget rebuilds on every
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/// `UxCameraValue` change, so once the native session starts
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/// producing frames the texture appears automatically.
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class UxCameraPreview extends StatelessWidget {
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const UxCameraPreview({super.key, required this.controller});
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final UxCameraController controller;
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@override
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Widget build(BuildContext context) {
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return ValueListenableBuilder<UxCameraValue>(
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valueListenable: controller,
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builder: (context, _, __) {
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final id = controller.textureId;
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if (id == null) return const SizedBox.expand();
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return Texture(textureId: id);
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},
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);
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}
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}
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