calendar_day_view 3.1.0

This package is dedicated to calendar day view. This is a complement to calendar to make your app better

example/lib/main.dart

import 'dart:math';

import 'package:calendar_day_view/calendar_day_view.dart';
import 'package:example/tabs/category_day_view_tab.dart';
import 'package:example/tabs/event_day_view_tab.dart';
import 'package:example/tabs/in_row_day_view_tab.dart';
import 'package:example/tabs/overflow_day_view_tab.dart';
import 'package:faker/faker.dart';
import 'package:flutter/material.dart';
import 'package:flutter_hooks/flutter_hooks.dart';

final rd = Random();
void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      title: 'Flutter Demo',
      theme:
          ThemeData(colorScheme: ColorScheme.fromSeed(seedColor: Colors.white)),
      home: const CalendarDayViewExample(),
    );
  }
}

class CalendarDayViewExample extends HookWidget {
  const CalendarDayViewExample({super.key});

  @override
  Widget build(BuildContext context) {
    final dayEvents = useState<List<DayEvent<String>>>(fakeEvents());

    final categories = useState([
      EventCategory(id: "1", name: "cate 1"),
      EventCategory(id: "2", name: "cate 2"),
      EventCategory(id: "3", name: "cate 3"),
      EventCategory(id: "4", name: "cate 4"),
    ]);
    final categoryEvents = useState<List<CategorizedDayEvent<String>>>(
        genEvents(categories.value.length));

    void addCategory() {
      categories.value = [
        ...categories.value,
        EventCategory(
            id: "${categories.value.length + 1}",
            name: "cate ${categories.value.length + 1}"),
      ];
      categoryEvents.value = genEvents(categories.value.length);
    }

    final bodyItems = [
      OverflowDayViewTab(
        events: dayEvents.value
            .map(
              (e) => e.copyWith(
                end: e.start.add(const Duration(minutes: 160)),
              ),
            )
            .toList(),
        onTimeTap: (time) => dayEvents.value = [
          ...dayEvents.value,
          DayEvent(
            value: faker.conference.name(),
            start: time,
            end: time.add(const Duration(minutes: 90)),
          )
        ],
      ),
      CategoryDayViewTab(
        events: categoryEvents.value,
        categories: categories.value,
        addEventOnClick: (cate, time) {
          categoryEvents.value = [
            ...categoryEvents.value,
            CategorizedDayEvent(
                categoryId: cate.id,
                value: faker.conference.name(),
                start: time)
          ];
        },
      ),
      InRowDayViewTab(
        events: dayEvents.value,
      ),
      EventDayViewTab(events: dayEvents.value),
    ];

    final currentIndex = useState<int>(0);

    return DefaultTabController(
      length: 4,
      child: SafeArea(
        child: Scaffold(
          extendBodyBehindAppBar: true,
          backgroundColor: Theme.of(context).colorScheme.background,
          bottomNavigationBar: BottomNavigationBar(
            showUnselectedLabels: true,
            showSelectedLabels: true,
            unselectedFontSize: 14,
            unselectedItemColor: Colors.black,
            selectedItemColor: Colors.blue,
            items: const [
              BottomNavigationBarItem(
                  icon: Icon(Icons.calendar_month), label: "Overflow"),
              BottomNavigationBarItem(
                  icon: Icon(Icons.calendar_view_day), label: "Category"),
              BottomNavigationBarItem(
                  icon: Icon(Icons.calendar_today_outlined), label: "In Row"),
              BottomNavigationBarItem(
                  icon: Icon(Icons.calendar_view_month), label: "Events"),
            ],
            onTap: (value) => currentIndex.value = value,
            currentIndex: currentIndex.value,
          ),
          body: NestedScrollView(
            headerSliverBuilder: (context, innerBoxScrolled) => [
              SliverAppBar.large(
                floating: true,
                pinned: true,
                stretch: true,
                flexibleSpace: Row(
                  children: [
                    Expanded(
                      child: FlexibleSpaceBar(
                        titlePadding: const EdgeInsets.symmetric(
                            horizontal: 10, vertical: 20),
                        title: Text(
                          getTitle(currentIndex.value),
                          style: const TextStyle(color: Colors.white),
                        ),
                      ),
                    ),
                    if (currentIndex.value != 1)
                      TextButton.icon(
                        style:
                            TextButton.styleFrom(backgroundColor: Colors.white),
                        onPressed: () => dayEvents.value = fakeEvents(),
                        icon: const Icon(Icons.refresh),
                        label: const Text("events"),
                      ),
                    if (currentIndex.value == 1) ...[
                      TextButton.icon(
                        style:
                            TextButton.styleFrom(backgroundColor: Colors.white),
                        onPressed: () => categoryEvents.value =
                            genEvents(categories.value.length),
                        icon: const Icon(Icons.refresh),
                        label: const Text("events"),
                      ),
                      const SizedBox(width: 10),
                      TextButton.icon(
                        style:
                            TextButton.styleFrom(backgroundColor: Colors.white),
                        onPressed: addCategory,
                        icon: const Icon(Icons.add),
                        label: const Text("category"),
                      ),
                    ],
                    const SizedBox(width: 10),
                  ],
                ),
              ),
            ],
            body: bodyItems[currentIndex.value],
          ),
        ),
      ),
    );
  }
}

String getTitle(int index) {
  switch (index) {
    case 0:
      return "Overflow Day View";
    case 1:
      return "Category Day View";
    case 2:
      return "In Row Day View";
    case 3:
      return "Events Day View";

    default:
      return "Calendar Day View";
  }
}

List<DayEvent<String>> fakeEvents() => faker.randomGenerator.amount(
    (i) => DayEvent(
          value: faker.conference.name(),
          start: DateTime.now().copyWith(
              hour: faker.randomGenerator.integer(24, min: 0), minute: 0),
        ),
    30,
    min: 10);

List<CategorizedDayEvent<String>> genEvents(int categoryLength) =>
    faker.randomGenerator.amount(
      (i) {
        final hour = faker.randomGenerator.integer(17, min: 7);
        final start = DateTime.now().copyWith(
          hour: hour,
          minute: faker.randomGenerator.element([0, 15, 20]),
          second: 0,
        );
        return CategorizedDayEvent(
            categoryId: faker.randomGenerator
                .integer(categoryLength + 1, min: 1)
                .toString(),
            value: faker.conference.name(),
            start: start,
            end: start.add(
              Duration(minutes: faker.randomGenerator.element([90, 60])),
            )
            // end: DateTime.now().copyWith(
            //   hour: faker.randomGenerator.integer(2, min: 1) + hour,
            //   minute: faker.randomGenerator.element([0, 30]),
            //   second: 0,
            // ),
            );
      },
      categoryLength * 5,
      min: 10,
    );