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import 'dart:math';
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import 'package:flutter/material.dart';
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import 'package:flutter_bloc/flutter_bloc.dart';
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import 'package:lightmeter/data/models/exposure_pair.dart';
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import 'package:lightmeter/generated/l10n.dart';
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import 'package:lightmeter/res/dimens.dart';
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import 'package:lightmeter/screens/timer/bloc_timer.dart';
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import 'package:lightmeter/screens/timer/components/text/widget_text_timer.dart';
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import 'package:lightmeter/screens/timer/components/timeline/widget_timeline_timer.dart';
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import 'package:lightmeter/screens/timer/event_timer.dart';
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import 'package:lightmeter/screens/timer/state_timer.dart';
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import 'package:material_color_utilities/material_color_utilities.dart';
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class TimerScreen extends StatefulWidget {
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final ExposurePair exposurePair;
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const TimerScreen({required this.exposurePair, super.key});
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@override
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State<TimerScreen> createState() => _TimerScreenState();
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}
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class _TimerScreenState extends State<TimerScreen> with TickerProviderStateMixin {
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late AnimationController timelineController;
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late Animation<double> timelineAnimation;
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late AnimationController startStopIconController;
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late Animation<double> startStopIconAnimation;
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@override
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void initState() {
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super.initState();
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timelineController = AnimationController(
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vsync: this,
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duration: Duration(seconds: widget.exposurePair.shutterSpeed.value.toInt()),
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);
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timelineAnimation = Tween<double>(begin: 1, end: 0).animate(timelineController);
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startStopIconController = AnimationController(vsync: this, duration: Dimens.durationS);
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startStopIconAnimation = Tween<double>(begin: 0, end: 1).animate(startStopIconController);
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}
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@override
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void didChangeDependencies() {
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super.didChangeDependencies();
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context.read<TimerBloc>().add(const StartTimerEvent());
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}
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@override
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void dispose() {
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timelineController.dispose();
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startStopIconController.dispose();
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super.dispose();
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}
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@override
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Widget build(BuildContext context) {
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// TODO (@vodemn): split build in timer/components folder
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return BlocListener<TimerBloc, TimerState>(
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listenWhen: (previous, current) => previous.runtimeType != current.runtimeType,
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listener: (context, state) => _updateAnimations(state),
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child: Scaffold(
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appBar: AppBar(
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automaticallyImplyLeading: false,
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centerTitle: true,
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elevation: 0,
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title: Text(
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widget.exposurePair.toString(),
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style: TextStyle(
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color: Theme.of(context).colorScheme.onSurface,
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fontSize: Dimens.grid24,
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),
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),
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actions: [if (Navigator.of(context).canPop()) const CloseButton()],
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),
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body: SafeArea(
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child: Center(
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child: Padding(
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padding: const EdgeInsets.all(Dimens.paddingL),
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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const Spacer(),
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SizedBox.fromSize(
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size: Size.square(MediaQuery.sizeOf(context).width - Dimens.paddingL * 4),
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child: ValueListenableBuilder(
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valueListenable: timelineAnimation,
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builder: (_, value, child) => TimerTimeline(
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progress: value,
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child: child!,
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),
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child: BlocBuilder<TimerBloc, TimerState>(
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buildWhen: (previous, current) => previous.timeLeft != current.timeLeft,
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builder: (_, state) => TimerText(
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timeLeft: state.timeLeft,
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duration: state.duration,
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),
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),
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),
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),
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const Spacer(),
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Row(
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children: [
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Expanded(
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child: Center(
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child: IconButton(
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onPressed: () {
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context.read<TimerBloc>().add(const ResetTimerEvent());
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},
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icon: const Icon(Icons.restore),
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),
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),
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),
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SizedBox.fromSize(
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size: const Size.square(Dimens.grid72),
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child: BlocBuilder<TimerBloc, TimerState>(
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builder: (_, state) => FloatingActionButton(
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shape: state is TimerResumedState ? null : const CircleBorder(),
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onPressed: state.timeLeft.inSeconds == 0
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? null
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: () {
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final event =
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state is TimerStoppedState ? const StartTimerEvent() : const StopTimerEvent();
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context.read<TimerBloc>().add(event);
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},
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child: AnimatedIcon(
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icon: AnimatedIcons.play_pause,
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progress: startStopIconAnimation,
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),
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),
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),
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),
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const Spacer(),
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],
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),
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],
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),
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),
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),
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),
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),
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);
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}
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void _updateAnimations(TimerState state) {
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switch (state) {
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case TimerResetState():
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startStopIconController.reverse();
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timelineController.stop();
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timelineController.animateTo(0, duration: Dimens.durationS);
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case TimerResumedState():
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startStopIconController.forward();
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timelineController.forward();
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case TimerStoppedState():
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startStopIconController.reverse();
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timelineController.stop();
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}
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}
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}
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