138 lines
4.4 KiB
Dart
Executable File
138 lines
4.4 KiB
Dart
Executable File
import 'package:filcnaplo/theme/colors/colors.dart';
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import 'package:flutter/material.dart';
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import 'package:filcnaplo/utils/format.dart';
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class HeroScrollView extends StatefulWidget {
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const HeroScrollView(
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{Key? key,
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required this.child,
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required this.title,
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required this.icon,
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this.italic = false,
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this.navBarItems = const [],
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this.onClose,
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this.iconSize = 64.0,
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this.scrollController})
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: super(key: key);
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final Widget child;
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final String title;
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final IconData? icon;
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final List<Widget> navBarItems;
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final VoidCallback? onClose;
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final double iconSize;
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final ScrollController? scrollController;
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final bool italic;
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@override
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_HeroScrollViewState createState() => _HeroScrollViewState();
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}
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class _HeroScrollViewState extends State<HeroScrollView> {
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late ScrollController _scrollController;
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bool showBarTitle = false;
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@override
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void initState() {
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super.initState();
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_scrollController = widget.scrollController ?? ScrollController();
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_scrollController.addListener(() {
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if (_scrollController.offset > 42.0) {
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if (showBarTitle == false) setState(() => showBarTitle = true);
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} else {
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if (showBarTitle == true) setState(() => showBarTitle = false);
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}
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});
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}
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@override
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void dispose() {
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super.dispose();
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_scrollController.dispose();
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}
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@override
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Widget build(BuildContext context) {
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return NestedScrollView(
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controller: _scrollController,
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physics:
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const BouncingScrollPhysics(parent: AlwaysScrollableScrollPhysics()),
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headerSliverBuilder: (context, _) => [
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SliverAppBar(
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pinned: true,
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floating: false,
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snap: false,
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centerTitle: false,
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titleSpacing: 0,
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surfaceTintColor: Theme.of(context).scaffoldBackgroundColor,
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title: AnimatedOpacity(
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opacity: showBarTitle ? 1.0 : 0.0,
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child: Row(
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children: [
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Icon(widget.icon,
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color: AppColors.of(context).text.withOpacity(.8)),
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const SizedBox(width: 8.0),
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Expanded(
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child: Text(
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widget.title.capital(),
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overflow: TextOverflow.ellipsis,
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maxLines: 2,
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style: TextStyle(
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color: AppColors.of(context).text,
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fontWeight: FontWeight.w500,
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fontStyle: widget.italic ? FontStyle.italic : null),
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),
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),
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],
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),
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duration: const Duration(milliseconds: 200)),
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leading: BackButton(
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color: AppColors.of(context).text,
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onPressed: () {
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if (widget.onClose != null) {
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widget.onClose!();
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} else {
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Navigator.of(context).pop();
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}
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}),
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actions: widget.navBarItems,
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expandedHeight: 145.69,
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stretch: true,
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flexibleSpace: FlexibleSpaceBar(
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background: Stack(
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children: [
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Center(
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child: Icon(
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widget.icon,
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size: widget.iconSize,
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color: AppColors.of(context).text.withOpacity(.15),
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),
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),
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Container(
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alignment: Alignment.center,
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margin: const EdgeInsets.only(top: 82),
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padding: const EdgeInsets.symmetric(horizontal: 12.0),
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child: Text(
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widget.title.capital(),
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maxLines: 2,
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overflow: TextOverflow.ellipsis,
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textAlign: TextAlign.center,
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style: TextStyle(
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fontSize: 36.0,
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color: AppColors.of(context).text.withOpacity(.9),
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fontStyle: widget.italic ? FontStyle.italic : null,
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fontWeight: FontWeight.bold),
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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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body: widget.child,
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);
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}
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}
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