table_calendar 1.1.2

Highly customizable, feature-packed Flutter Calendar with gestures, animations and multiple formats.

example/lib/main.dart

//  Copyright (c) 2019 Aleksander Woźniak
//  Licensed under Apache License v2.0

import 'package:date_utils/date_utils.dart';
import 'package:flutter/material.dart';
import 'package:intl/date_symbol_data_local.dart';
import 'package:table_calendar/table_calendar.dart';

void main() {
  initializeDateFormatting().then((_) => runApp(MyApp()));
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Table Calendar Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(title: 'Table Calendar Demo'),
    );
  }
}

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

  final String title;

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

class _MyHomePageState extends State<MyHomePage> with TickerProviderStateMixin {
  DateTime _selectedDay;
  Map<DateTime, List> _events;
  Map<DateTime, List> _visibleEvents;
  List _selectedEvents;
  AnimationController _controller;

  @override
  void initState() {
    super.initState();
    _selectedDay = DateTime.now();
    _events = {
      _selectedDay.subtract(Duration(days: 30)): ['Event A0', 'Event B0', 'Event C0'],
      _selectedDay.subtract(Duration(days: 27)): ['Event A1'],
      _selectedDay.subtract(Duration(days: 20)): ['Event A2', 'Event B2', 'Event C2', 'Event D2'],
      _selectedDay.subtract(Duration(days: 16)): ['Event A3', 'Event B3'],
      _selectedDay.subtract(Duration(days: 10)): ['Event A4', 'Event B4', 'Event C4'],
      _selectedDay.subtract(Duration(days: 4)): ['Event A5', 'Event B5', 'Event C5'],
      _selectedDay.subtract(Duration(days: 2)): ['Event A6', 'Event B6'],
      _selectedDay: ['Event A7', 'Event B7', 'Event C7', 'Event D7'],
      _selectedDay.add(Duration(days: 1)): ['Event A8', 'Event B8', 'Event C8', 'Event D8'],
      _selectedDay.add(Duration(days: 3)): Set.from(['Event A9', 'Event A9', 'Event B9']).toList(),
      _selectedDay.add(Duration(days: 7)): ['Event A10', 'Event B10', 'Event C10'],
      _selectedDay.add(Duration(days: 11)): ['Event A11', 'Event B11'],
      _selectedDay.add(Duration(days: 17)): ['Event A12', 'Event B12', 'Event C12', 'Event D12'],
      _selectedDay.add(Duration(days: 22)): ['Event A13', 'Event B13'],
      _selectedDay.add(Duration(days: 26)): ['Event A14', 'Event B14', 'Event C14'],
    };
    _selectedEvents = _events[_selectedDay] ?? [];
    _visibleEvents = _events;

    _controller = AnimationController(
      vsync: this,
      duration: const Duration(milliseconds: 400),
    );

    _controller.forward();
  }

  void _onDaySelected(DateTime day, List events) {
    setState(() {
      _selectedDay = day;
      _selectedEvents = events;
    });

    print('Selected day: $day');
  }

  void _onVisibleDaysChanged(DateTime first, DateTime last, CalendarFormat format) {
    setState(() {
      _visibleEvents = Map.fromEntries(
        _events.entries.where(
          (entry) =>
              entry.key.isAfter(first.subtract(const Duration(days: 1))) &&
              entry.key.isBefore(last.add(const Duration(days: 1))),
        ),
      );
    });

    print('First visible day: $first');
    print('Last visible day: $last');
    print('Current format: $format');
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Column(
        mainAxisSize: MainAxisSize.max,
        children: <Widget>[
          // Switch out 2 lines below to play with TableCalendar's settings
          //-----------------------
          _buildTableCalendar(),
          // _buildTableCalendarWithBuilders(),
          const SizedBox(height: 8.0),
          Expanded(child: _buildEventList()),
        ],
      ),
    );
  }

  // Simple TableCalendar configuration (using Styles)
  Widget _buildTableCalendar() {
    return TableCalendar(
      locale: 'en_US',
      events: _visibleEvents,
      initialCalendarFormat: CalendarFormat.week,
      formatAnimation: FormatAnimation.slide,
      startingDayOfWeek: StartingDayOfWeek.monday,
      availableGestures: AvailableGestures.all,
      availableCalendarFormats: const {
        CalendarFormat.month: 'Month',
        CalendarFormat.twoWeeks: '2 weeks',
        CalendarFormat.week: 'Week',
      },
      calendarStyle: CalendarStyle(
        selectedColor: Colors.deepOrange[400],
        todayColor: Colors.deepOrange[200],
        markersColor: Colors.brown[700],
      ),
      headerStyle: HeaderStyle(
        formatButtonTextStyle: TextStyle().copyWith(color: Colors.white, fontSize: 15.0),
        formatButtonDecoration: BoxDecoration(
          color: Colors.deepOrange[400],
          borderRadius: BorderRadius.circular(16.0),
        ),
      ),
      onDaySelected: _onDaySelected,
      onVisibleDaysChanged: _onVisibleDaysChanged,
    );
  }

  // More advanced TableCalendar configuration (using Builders & Styles)
  Widget _buildTableCalendarWithBuilders() {
    return TableCalendar(
      locale: 'pl_PL',
      events: _visibleEvents,
      initialCalendarFormat: CalendarFormat.month,
      formatAnimation: FormatAnimation.slide,
      startingDayOfWeek: StartingDayOfWeek.sunday,
      availableGestures: AvailableGestures.all,
      availableCalendarFormats: const {
        CalendarFormat.month: '',
        CalendarFormat.week: '',
      },
      calendarStyle: CalendarStyle(
        outsideDaysVisible: false,
        weekendStyle: TextStyle().copyWith(color: Colors.blue[800]),
        outsideWeekendStyle: TextStyle().copyWith(color: Colors.blue[800].withAlpha(127)),
      ),
      daysOfWeekStyle: DaysOfWeekStyle(
        weekendStyle: TextStyle().copyWith(color: Colors.blue[600]),
      ),
      headerStyle: HeaderStyle(
        centerHeaderTitle: true,
        formatButtonVisible: false,
      ),
      builders: CalendarBuilders(
        selectedDayBuilder: (context, date, _) {
          return FadeTransition(
            opacity: Tween(begin: 0.0, end: 1.0).animate(_controller),
            child: Container(
              margin: const EdgeInsets.all(4.0),
              padding: const EdgeInsets.only(top: 5.0, left: 6.0),
              color: Colors.deepOrange[300],
              width: 100,
              height: 100,
              child: Text(
                '${date.day}',
                style: TextStyle().copyWith(fontSize: 16.0),
              ),
            ),
          );
        },
        todayDayBuilder: (context, date, _) {
          return Container(
            margin: const EdgeInsets.all(4.0),
            padding: const EdgeInsets.only(top: 5.0, left: 6.0),
            color: Colors.amber[400],
            width: 100,
            height: 100,
            child: Text(
              '${date.day}',
              style: TextStyle().copyWith(fontSize: 16.0),
            ),
          );
        },
        markersBuilder: (context, date, events) {
          return Positioned(
            right: 1,
            bottom: 1,
            child: AnimatedContainer(
              duration: const Duration(milliseconds: 400),
              decoration: BoxDecoration(
                shape: BoxShape.rectangle,
                color: Utils.isSameDay(date, _selectedDay)
                    ? Colors.brown[400]
                    : Utils.isSameDay(date, DateTime.now()) ? Colors.brown[300] : Colors.blue[400],
              ),
              width: 16.0,
              height: 16.0,
              child: Center(
                child: Text(
                  '${events.length}',
                  style: TextStyle().copyWith(
                    color: Colors.white,
                    fontSize: 12.0,
                  ),
                ),
              ),
            ),
          );
        },
      ),
      onDaySelected: (date, events) {
        _onDaySelected(date, events);
        _controller.forward(from: 0.0);
      },
      onVisibleDaysChanged: _onVisibleDaysChanged,
    );
  }

  Widget _buildEventList() {
    return ListView(
      children: _selectedEvents
          .map((event) => Container(
                decoration: BoxDecoration(
                  border: Border.all(width: 0.8),
                  borderRadius: BorderRadius.circular(12.0),
                ),
                margin: const EdgeInsets.symmetric(horizontal: 8.0, vertical: 4.0),
                child: ListTile(
                  title: Text(event.toString()),
                  onTap: () => print('$event tapped!'),
                ),
              ))
          .toList(),
    );
  }
}