m3_lightmeter/lib/screens/metering/screen_metering.dart

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import 'package:flutter/material.dart';
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import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:lightmeter/data/models/photography_values/photography_value.dart';
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import 'package:lightmeter/res/dimens.dart';
import 'package:lightmeter/screens/settings/screen_settings.dart';
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import 'components/bottom_controls/widget_bottom_controls.dart';
import 'components/camera/widget_exposure_slider.dart';
import 'components/camera/widget_zoom_camera.dart';
import 'components/exposure_pairs_list/widget_list_exposure_pairs.dart';
import 'components/topbar/widget_topbar.dart';
import 'bloc_metering.dart';
import 'event_metering.dart';
import 'state_metering.dart';
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class MeteringScreen extends StatefulWidget {
const MeteringScreen({super.key});
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@override
State<MeteringScreen> createState() => _MeteringScreenState();
}
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class _MeteringScreenState extends State<MeteringScreen> {
double topBarOverflow = 0.0;
@override
void didChangeDependencies() {
super.didChangeDependencies();
context.read<MeteringBloc>().add(StopTypeChangedEvent(context.watch<StopType>()));
}
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@override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Theme.of(context).colorScheme.background,
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body: BlocBuilder<MeteringBloc, MeteringState>(
builder: (context, state) {
return Stack(
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children: [
Column(
children: [
MeteringTopBar(
fastest: state.fastest,
slowest: state.slowest,
ev: state.ev,
iso: state.iso,
nd: state.nd,
onIsoChanged: (value) => context.read<MeteringBloc>().add(IsoChangedEvent(value)),
onNdChanged: (value) => context.read<MeteringBloc>().add(NdChangedEvent(value)),
onCutoutLayout: (value) => topBarOverflow = value,
),
Expanded(
child: LayoutBuilder(
builder: (context, constraints) => OverflowBox(
alignment: Alignment.bottomCenter,
maxHeight: constraints.maxHeight + topBarOverflow.abs(),
maxWidth: constraints.maxWidth,
child: Padding(
padding: const EdgeInsets.symmetric(horizontal: Dimens.paddingM),
child: Row(
children: [
Expanded(
child: Padding(
padding: topBarOverflow >= 0 ? EdgeInsets.only(top: topBarOverflow) : EdgeInsets.zero,
child: ExposurePairsList(state.exposurePairs),
),
),
const SizedBox(width: Dimens.grid8),
Expanded(
child: Padding(
padding: const EdgeInsets.symmetric(vertical: Dimens.paddingM).add(
topBarOverflow <= 0 ? EdgeInsets.only(top: -topBarOverflow) : EdgeInsets.zero),
child: Column(
children: const [
Expanded(child: CameraExposureSlider()),
SizedBox(height: Dimens.grid24),
CameraZoomSlider(),
],
),
),
),
],
),
),
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),
),
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),
MeteringBottomControls(
onMeasure: () => context.read<MeteringBloc>().add(const MeasureEvent()),
onSettings: () {
Navigator.push(context, MaterialPageRoute(builder: (context) => const SettingsScreen()));
},
),
],
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),
],
);
},
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),
);
}
}