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Create sidebar_with_scroll #1

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205 changes: 205 additions & 0 deletions lib/sidebar_with_scroll
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Original file line number Diff line number Diff line change
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import 'dart:async';
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:rxdart/rxdart.dart';
import '../bloc.navigation_bloc/navigation_bloc.dart';
import '../sidebar/menu_item.dart';

class SideBar extends StatefulWidget {
@override
_SideBarState createState() => _SideBarState();
}

class _SideBarState extends State<SideBar> with SingleTickerProviderStateMixin<SideBar> {
AnimationController _animationController;
StreamController<bool> isSidebarOpenedStreamController;
Stream<bool> isSidebarOpenedStream;
StreamSink<bool> isSidebarOpenedSink;
final _animationDuration = const Duration(milliseconds: 500);

@override
void initState() {
super.initState();
_animationController = AnimationController(vsync: this, duration: _animationDuration);
isSidebarOpenedStreamController = PublishSubject<bool>();
isSidebarOpenedStream = isSidebarOpenedStreamController.stream;
isSidebarOpenedSink = isSidebarOpenedStreamController.sink;
}

@override
void dispose() {
_animationController.dispose();
isSidebarOpenedStreamController.close();
isSidebarOpenedSink.close();
super.dispose();
}

void onIconPressed() {
final animationStatus = _animationController.status;
final isAnimationCompleted = animationStatus == AnimationStatus.completed;

if (isAnimationCompleted) {
isSidebarOpenedSink.add(false);
_animationController.reverse();
} else {
isSidebarOpenedSink.add(true);
_animationController.forward();
}
}

@override
Widget build(BuildContext context) {
final screenWidth = MediaQuery.of(context).size.width;

return StreamBuilder<bool>(
initialData: false,
stream: isSidebarOpenedStream,
builder: (context, isSideBarOpenedAsync) {
return AnimatedPositioned(
duration: _animationDuration,
top: 0,
bottom: 0,
left: isSideBarOpenedAsync.data ? 0 : -screenWidth,
right: isSideBarOpenedAsync.data ? 0 : screenWidth - 45,
child: Row(
children: <Widget>[
Expanded(
child: Container(
padding: const EdgeInsets.symmetric(horizontal: 20),
color: const Color(0xFF262AAA),
child: SingleChildScrollView(
child: Column(
children: <Widget>[
SizedBox(
height: 100,
),
ListTile(
title: Text(
"Prateek",
style: TextStyle(color: Colors.white, fontSize: 30, fontWeight: FontWeight.w800),
),
subtitle: Text(
"www.techieblossom.com",
style: TextStyle(
color: Color(0xFF1BB5FD),
fontSize: 18,
),
),
leading: CircleAvatar(
child: Icon(
Icons.perm_identity,
color: Colors.white,
),
radius: 40,
),
),
Divider(
height: 64,
thickness: 0.5,
color: Colors.white.withOpacity(0.3),
indent: 32,
endIndent: 32,
),
MenuItem(
icon: Icons.home,
title: "Home",
onTap: () {
onIconPressed();
BlocProvider.of<NavigationBloc>(context).add(NavigationEvents.HomePageClickedEvent);
},
),
MenuItem(
icon: Icons.person,
title: "My Account",
onTap: () {
onIconPressed();
BlocProvider.of<NavigationBloc>(context).add(NavigationEvents.MyAccountClickedEvent);
},
),
MenuItem(
icon: Icons.shopping_basket,
title: "My Orders",
onTap: () {
onIconPressed();
BlocProvider.of<NavigationBloc>(context).add(NavigationEvents.MyOrdersClickedEvent);
},
),
MenuItem(
icon: Icons.card_giftcard,
title: "Wishlist",
),
Divider(
height: 64,
thickness: 0.5,
color: Colors.white.withOpacity(0.3),
indent: 32,
endIndent: 32,
),
MenuItem(
icon: Icons.settings,
title: "Settings",
),
MenuItem(
icon: Icons.exit_to_app,
title: "Logout",
),
],
),
),
),
),
Align(
alignment: Alignment(0, -0.9),
child: GestureDetector(
onTap: () {
onIconPressed();
},
child: ClipPath(
clipper: CustomMenuClipper(),
child: Container(
width: 35,
height: 110,
color: Color(0xFF262AAA),
alignment: Alignment.centerLeft,
child: AnimatedIcon(
progress: _animationController.view,
icon: AnimatedIcons.menu_close,
color: Color(0xFF1BB5FD),
size: 25,
),
),
),
),
),
],
),
);
},
);
}
}

class CustomMenuClipper extends CustomClipper<Path> {
@override
Path getClip(Size size) {
Paint paint = Paint();
paint.color = Colors.white;

final width = size.width;
final height = size.height;

Path path = Path();
path.moveTo(0, 0);
path.quadraticBezierTo(0, 8, 10, 16);
path.quadraticBezierTo(width - 1, height / 2 - 20, width, height / 2);
path.quadraticBezierTo(width + 1, height / 2 + 20, 10, height - 16);
path.quadraticBezierTo(0, height - 8, 0, height);
path.close();
return path;
}

@override
bool shouldReclip(CustomClipper<Path> oldClipper) {
return true;
}
}