curved_animation_controller 1.1.0+1

The easy way to use AnimationController with Curve. Apply animation in Flutter with a more straightforward code.

example/lib/main.dart

import 'package:example/flip_drawer.dart';
import 'package:example/page.dart';
import 'package:example/shared.dart';
import 'package:example/slide_drawer.dart';
import 'package:flutter/material.dart';

void main() {
  runApp(App());
}

class App extends StatefulWidget {
  static _AppState? of(BuildContext context) =>
      context.findAncestorStateOfType<_AppState>();

  @override
  _AppState createState() => _AppState();
}

class _AppState extends State<App> {
  String _title = 'Curved Animation';
  Key _key = UniqueKey();

  restart() {
    setState(() {
      _key = UniqueKey();
    });
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      key: _key,
      title: 'Curved Animation Controller Demo',
      theme: ThemeData(
        primarySwatch: Colors.teal,
        visualDensity: VisualDensity.adaptivePlatformDensity,
      ),
      home: isFlipDrawer
          ? FlipDrawer(title: _title, drawer: MenuDrawer(), child: HomePage())
          : SlideDrawer(drawer: MenuDrawer(), child: HomePage(title: _title)),
    );
  }
}

class MenuDrawer extends StatelessWidget {
  BoxDecoration get _gradient => BoxDecoration(
        gradient: LinearGradient(
          begin: Alignment.topLeft,
          end: Alignment.bottomRight,
          stops: [0.0, 1.0],
          colors: [
            Color(0xFF43CEA2),
            Color(0xFF1D6DBD),
          ],
        ),
      );

  BoxDecoration get _color => BoxDecoration(
        color: Colors.teal[500],
      );

  @override
  Widget build(BuildContext context) {
    return Material(
      shadowColor: Colors.transparent,
      borderOnForeground: false,
      child: Container(
        decoration: isSlideDrawer ? _gradient : _color,
        child: SafeArea(
          child: Theme(
            data: ThemeData(brightness: Brightness.dark),
            child: Column(
              mainAxisAlignment: MainAxisAlignment.center,
              crossAxisAlignment: CrossAxisAlignment.start,
              mainAxisSize: MainAxisSize.max,
              children: [
                if (!isSlideDrawer)
                  ListTile(
                    leading: Icon(Icons.adjust),
                    title: Text('Slide Drawer'),
                    onTap: () {
                      type = DrawerType.slide;
                      App.of(context)!.restart();
                    },
                  ),
                if (!isFlipDrawer)
                  ListTile(
                    leading: Icon(Icons.adjust),
                    title: Text('Flip Drawer'),
                    onTap: () {
                      type = DrawerType.flip;
                      App.of(context)!.restart();
                    },
                  ),
                ListTile(
                  leading: Icon(Icons.rss_feed),
                  title: Text('News'),
                ),
                ListTile(
                  leading: Icon(Icons.favorite_border),
                  title: Text('Favourites'),
                ),
                ListTile(
                  leading: Icon(Icons.map),
                  title: Text('Map'),
                ),
                ListTile(
                  leading: Icon(Icons.settings),
                  title: Text('Settings'),
                ),
                ListTile(
                  leading: Icon(Icons.person_outline),
                  title: Text('Profile'),
                ),
              ],
            ),
          ),
        ),
      ),
    );
  }
}