selfprivacy.org.app/lib/ui/components/pre_styled_buttons/flash_fab.dart

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import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:ionicons/ionicons.dart';
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import 'package:selfprivacy/logic/cubit/client_jobs/client_jobs_cubit.dart';
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import 'package:selfprivacy/ui/components/brand_bottom_sheet/brand_bottom_sheet.dart';
import 'package:selfprivacy/ui/components/jobs_content/jobs_content.dart';
import 'package:selfprivacy/ui/helpers/modals.dart';
class BrandFab extends StatefulWidget {
const BrandFab({final super.key});
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@override
State<BrandFab> createState() => _BrandFabState();
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}
class _BrandFabState extends State<BrandFab>
with SingleTickerProviderStateMixin {
late AnimationController _animationController;
late Animation _colorTween;
@override
void initState() {
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_animationController = AnimationController(
vsync: this,
duration: const Duration(milliseconds: 800),
);
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super.initState();
}
@override
void dispose() {
_animationController.dispose();
super.dispose();
}
bool wasPrevStateIsEmpty = true;
@override
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Widget build(final BuildContext context) {
_colorTween = ColorTween(
begin: Theme.of(context).colorScheme.onPrimaryContainer,
end: Theme.of(context).colorScheme.primary,
).animate(_animationController);
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return BlocListener<JobsCubit, JobsState>(
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listener: (final BuildContext context, final JobsState state) {
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if (wasPrevStateIsEmpty && state is! JobsStateEmpty) {
wasPrevStateIsEmpty = false;
_animationController.forward();
} else if (!wasPrevStateIsEmpty && state is JobsStateEmpty) {
wasPrevStateIsEmpty = true;
_animationController.reverse();
}
},
child: FloatingActionButton(
onPressed: () {
showBrandBottomSheet(
context: context,
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builder: (final BuildContext context) => const BrandBottomSheet(
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isExpended: true,
child: JobsContent(),
),
);
},
child: AnimatedBuilder(
animation: _colorTween,
builder: (final BuildContext context, final Widget? child) {
final double v = _animationController.value;
final IconData icon =
v > 0.5 ? Ionicons.flash : Ionicons.flash_outline;
return Transform.scale(
scale: 1 + (v < 0.5 ? v : 1 - v) * 2,
child: Icon(
icon,
color: _colorTween.value,
),
);
},
),
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),
);
}
}