nested_side_sheet 1.1.2

Flutter package which enables the display of multiple side sheets on top of each other with the ability to perform typical navigation actions like push, replace, pop and popUntil.

example/lib/main.dart

import 'package:example/view/color.dart';
import 'package:example/view/theme.dart';
import 'package:example/view/widget/home_card.dart';
import 'package:example/view/widget/sheet.dart';
import 'package:flutter/material.dart';
import 'package:flutter_svg/svg.dart';
import 'package:nested_side_sheet/nested_side_sheet.dart';
import 'package:url_launcher/url_launcher.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) => MaterialApp(
        title: 'Nested Side Sheet',
        theme: lightTheme(),
        debugShowCheckedModeBanner: false,
        home: Material(
          color: accentColor,
          // Side sheets will be placed above the NestedSideSheet's child
          child: NestedSideSheet(
            child: MyHomePage(title: 'Nested Side Sheet'),
          ),
        ),
      );
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({Key? key, required this.title}) : super(key: key);

  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  @override
  Widget build(BuildContext context) => HomeCard(
        shadows: kElevationToShadow[8],
        child: Scaffold(
          body: Stack(
            children: [
              buildInfoCard(),
              ...buildButtons(),
            ],
          ),
        ),
      );

  Widget buildInfoCard() => Center(
        child: Container(
          width: 300,
          height: 150,
          decoration: ShapeDecoration(
            shape: RoundedRectangleBorder(
              borderRadius: BorderRadius.circular(10),
              side: BorderSide(color: accentColor),
            ),
          ),
          child: Center(
            child: Row(
              mainAxisAlignment: MainAxisAlignment.center,
              children: [
                GestureDetector(
                  onTap: () => launchUrl(Uri.https('krootl.com')),
                  child: MouseRegion(
                    cursor: SystemMouseCursors.click,
                    child: ClipRRect(
                      borderRadius: BorderRadius.circular(2),
                      child: SvgPicture.asset(
                        'assets/krootl_logo.svg',
                        height: 28,
                      ),
                    ),
                  ),
                ),
                const SizedBox(width: 8),
                Text(
                  widget.title,
                  style: Theme.of(context).appBarTheme.titleTextStyle,
                ),
              ],
            ),
          ),
        ),
      );

  List<Widget> buildButtons() => [
        Align(
          alignment: Alignment.center,
          child: Padding(
            padding: const EdgeInsets.only(right: 300),
            child: FloatingActionButton(
              onPressed: openLeftSheet,
              child: Icon(Icons.arrow_back_rounded),
            ),
          ),
        ),
        Align(
          alignment: Alignment.center,
          child: Padding(
            padding: const EdgeInsets.only(bottom: 150),
            child: FloatingActionButton(
              onPressed: openTopSheet,
              child: Icon(Icons.arrow_upward_rounded),
            ),
          ),
        ),
        Align(
          alignment: Alignment.center,
          child: Padding(
            padding: const EdgeInsets.only(left: 300),
            child: FloatingActionButton(
              onPressed: openRightSheet,
              child: Icon(Icons.arrow_forward_rounded),
            ),
          ),
        ),
        Align(
          alignment: Alignment.center,
          child: Padding(
            padding: const EdgeInsets.only(top: 150),
            child: FloatingActionButton(
              onPressed: openBottomSheet,
              child: Icon(Icons.arrow_downward_rounded),
            ),
          ),
        ),
      ];

  void openLeftSheet() async {
    ScaffoldMessenger.of(context).clearSnackBars();

    final result = await NestedSideSheet.of(context).push(
      Sheet(
        size: Size(376, MediaQuery.of(context).size.height),
      ),
      transitionBuilder: leftSideSheetTransition,
      position: SideSheetPosition.left,
    );

    if (result is String) showSnackBar(result);
  }

  void openTopSheet() async {
    ScaffoldMessenger.of(context).clearSnackBars();

    final decorationBuilder = (child) => HomeCard(child: child);
    final result = await NestedSideSheet.of(context).push(
      Sheet(
        size: Size(MediaQuery.of(context).size.width, 400),
      ),
      transitionBuilder: topSideSheetTransition,
      position: SideSheetPosition.top,
      decorationBuilder: decorationBuilder,
    );

    if (result is String) showSnackBar(result);
  }

  void openRightSheet() async {
    ScaffoldMessenger.of(context).clearSnackBars();

    final decorationBuilder = (child) => HomeCard(child: child);
    final result = await NestedSideSheet.of(context).push(
      Sheet(
        size: Size(
          MediaQuery.of(context).size.width * (1 / 3),
          MediaQuery.of(context).size.height,
        ),
      ),
      transitionBuilder: rightSideSheetTransition,
      position: SideSheetPosition.right,
      decorationBuilder: decorationBuilder,
      dismissible: true,
    );

    if (result is String) showSnackBar(result);
  }

  void openBottomSheet() async {
    ScaffoldMessenger.of(context).clearSnackBars();

    final result = await NestedSideSheet.of(context).push(
      Sheet(
        size: Size(MediaQuery.of(context).size.width, 400),
      ),
      transitionBuilder: bottomSideSheetTransition,
      position: SideSheetPosition.bottom,
    );

    if (result is String) showSnackBar(result);
  }

  void showSnackBar(String result) =>
      ScaffoldMessenger.of(context).showSnackBar(
        SnackBar(
          content: Text(result, textAlign: TextAlign.center),
          width: 300,
          behavior: SnackBarBehavior.floating,
        ),
      );
}