m3_lightmeter/lib/screens/metering/screen_metering.dart
2023-05-30 17:34:37 +02:00

141 lines
5.4 KiB
Dart

import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:lightmeter/data/models/ev_source_type.dart';
import 'package:lightmeter/data/models/exposure_pair.dart';
import 'package:lightmeter/data/models/film.dart';
import 'package:lightmeter/data/models/metering_screen_layout_config.dart';
import 'package:lightmeter/environment.dart';
import 'package:lightmeter/providers/equipment_profile_provider.dart';
import 'package:lightmeter/providers/ev_source_type_provider.dart';
import 'package:lightmeter/screens/metering/bloc_metering.dart';
import 'package:lightmeter/screens/metering/components/bottom_controls/provider_bottom_controls.dart';
import 'package:lightmeter/screens/metering/components/camera_container/provider_container_camera.dart';
import 'package:lightmeter/screens/metering/components/light_sensor_container/provider_container_light_sensor.dart';
import 'package:lightmeter/screens/metering/event_metering.dart';
import 'package:lightmeter/screens/metering/state_metering.dart';
import 'package:lightmeter/utils/inherited_generics.dart';
import 'package:m3_lightmeter_resources/m3_lightmeter_resources.dart';
class MeteringScreen extends StatelessWidget {
const MeteringScreen({super.key});
@override
Widget build(BuildContext context) {
return _InheritedListeners(
child: Scaffold(
backgroundColor: Theme.of(context).colorScheme.background,
body: Column(
children: [
Expanded(
child: BlocBuilder<MeteringBloc, MeteringState>(
builder: (_, state) => _MeteringContainerBuidler(
fastest: state is MeteringDataState ? state.fastest : null,
slowest: state is MeteringDataState ? state.slowest : null,
exposurePairs: state is MeteringDataState ? state.exposurePairs : [],
film: state.film,
iso: state.iso,
nd: state.nd,
onFilmChanged: (value) =>
context.read<MeteringBloc>().add(FilmChangedEvent(value)),
onIsoChanged: (value) => context.read<MeteringBloc>().add(IsoChangedEvent(value)),
onNdChanged: (value) => context.read<MeteringBloc>().add(NdChangedEvent(value)),
),
),
),
BlocBuilder<MeteringBloc, MeteringState>(
builder: (context, state) => MeteringBottomControlsProvider(
ev: state is MeteringDataState ? state.ev : null,
isMetering:
state is LoadingState || state is MeteringDataState && state.continuousMetering,
hasError: state is MeteringDataState && state.hasError,
onSwitchEvSourceType: context.get<Environment>().hasLightSensor
? EvSourceTypeProvider.of(context).toggleType
: null,
onMeasure: () => context.read<MeteringBloc>().add(const MeasureEvent()),
onSettings: () => Navigator.pushNamed(context, 'settings'),
),
),
],
),
),
);
}
}
class _InheritedListeners extends StatelessWidget {
final Widget child;
const _InheritedListeners({required this.child});
@override
Widget build(BuildContext context) {
return InheritedWidgetListener<EquipmentProfile>(
onDidChangeDependencies: (value) {
context.read<MeteringBloc>().add(EquipmentProfileChangedEvent(value));
},
child: InheritedWidgetListener<StopType>(
onDidChangeDependencies: (value) {
context.read<MeteringBloc>().add(StopTypeChangedEvent(value));
},
child: InheritedModelAspectListener<MeteringScreenLayoutFeature, bool>(
aspect: MeteringScreenLayoutFeature.filmPicker,
onDidChangeDependencies: (value) {
if (!value) context.read<MeteringBloc>().add(const FilmChangedEvent(Film.other()));
},
child: child,
),
),
);
}
}
class _MeteringContainerBuidler extends StatelessWidget {
final ExposurePair? fastest;
final ExposurePair? slowest;
final Film film;
final IsoValue iso;
final NdValue nd;
final ValueChanged<Film> onFilmChanged;
final ValueChanged<IsoValue> onIsoChanged;
final ValueChanged<NdValue> onNdChanged;
final List<ExposurePair> exposurePairs;
const _MeteringContainerBuidler({
required this.fastest,
required this.slowest,
required this.film,
required this.iso,
required this.nd,
required this.onFilmChanged,
required this.onIsoChanged,
required this.onNdChanged,
required this.exposurePairs,
});
@override
Widget build(BuildContext context) {
return context.listen<EvSourceType>() == EvSourceType.camera
? CameraContainerProvider(
fastest: fastest,
slowest: slowest,
film: film,
iso: iso,
nd: nd,
onFilmChanged: onFilmChanged,
onIsoChanged: onIsoChanged,
onNdChanged: onNdChanged,
exposurePairs: exposurePairs,
)
: LightSensorContainerProvider(
fastest: fastest,
slowest: slowest,
film: film,
iso: iso,
nd: nd,
onFilmChanged: onFilmChanged,
onIsoChanged: onIsoChanged,
onNdChanged: onNdChanged,
exposurePairs: exposurePairs,
);
}
}