bs_ad_calendar 1.0.0

A fully customizable Nepali (Bikram Sambat) and Gregorian calendar widget for Flutter. Dual calendar modes, AD ↔ BS date conversion, interactive monthly calendar, modal date pickers, dual locale (Engl [...]

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:bs_ad_calendar/bs_ad_calendar.dart';

void main() => runApp(const NepaliCalendarExampleApp());

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Nepali Calendar Demo',
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: const Color(0xFFE53935)),
        useMaterial3: true,
      ),
      home: const ExampleHomePage(),
    );
  }
}

class ExampleHomePage extends StatefulWidget {
  const ExampleHomePage({super.key});

  @override
  State<ExampleHomePage> createState() => _ExampleHomePageState();
}

class _ExampleHomePageState extends State<ExampleHomePage> {
  NepaliDate? _selectedDate;
  NepaliLocale _locale = NepaliLocale.english;
  bool _showEnglishDate = true;

  // Sample events
  final Map<String, List<String>> _events = {
    NepaliDateConverter.today().toFormattedString(): ['Today event'],
    NepaliDateConverter.adToBs(
            DateTime.now().add(const Duration(days: 2)))
        .toFormattedString(): ['Upcoming event 1', 'Upcoming event 2'],
  };

  @override
  Widget build(BuildContext context) {
    final today = NepaliDateConverter.today();

    return Scaffold(
      appBar: AppBar(
        title: const Text('Nepali Calendar Demo'),
        backgroundColor: const Color(0xFFE53935),
        foregroundColor: Colors.white,
      ),
      body: SingleChildScrollView(
        padding: const EdgeInsets.all(16),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            // ── Controls ────────────────────────────────────────────────────
            Row(
              children: [
                const Text('Locale: ', style: TextStyle(fontWeight: FontWeight.bold)),
                ChoiceChip(
                  label: const Text('English'),
                  selected: _locale == NepaliLocale.english,
                  onSelected: (_) =>
                      setState(() => _locale = NepaliLocale.english),
                ),
                const SizedBox(width: 8),
                ChoiceChip(
                  label: const Text('नेपाली'),
                  selected: _locale == NepaliLocale.nepali,
                  onSelected: (_) =>
                      setState(() => _locale = NepaliLocale.nepali),
                ),
              ],
            ),
            const SizedBox(height: 8),
            Row(
              children: [
                const Text('Show AD date: ',
                    style: TextStyle(fontWeight: FontWeight.bold)),
                Switch(
                  value: _showEnglishDate,
                  activeTrackColor: const Color(0xFFE53935),
                  onChanged: (v) => setState(() => _showEnglishDate = v),
                ),
              ],
            ),

            const SizedBox(height: 16),
            const Divider(),

            // ── Inline calendar ──────────────────────────────────────────────
            const Text(
              'Inline Calendar',
              style: TextStyle(fontSize: 16, fontWeight: FontWeight.bold),
            ),
            const SizedBox(height: 8),
            Card(
              elevation: 2,
              shape: RoundedRectangleBorder(
                borderRadius: BorderRadius.circular(12),
              ),
              child: Padding(
                padding: const EdgeInsets.all(8),
                child: NepaliCalendarWidget(
                  initialDate: today,
                  selectedDate: _selectedDate,
                  locale: _locale,
                  calendarStyle: NepaliCalendarStyle(
                    showEnglishDate: _showEnglishDate,
                    todayDecoration: const BoxDecoration(
                      color: Color(0xFFE53935),
                      shape: BoxShape.circle,
                    ),
                    selectedDecoration: BoxDecoration(
                      color: const Color(0xFFE53935).withValues(alpha: 0.5),
                      shape: BoxShape.circle,
                    ),
                  ),
                  headerStyle: const NepaliHeaderStyle(
                    leftChevronIcon:
                        Icon(Icons.chevron_left, color: Color(0xFFE53935)),
                    rightChevronIcon:
                        Icon(Icons.chevron_right, color: Color(0xFFE53935)),
                    titleTextStyle: TextStyle(
                      fontSize: 16,
                      fontWeight: FontWeight.bold,
                      color: Color(0xFFE53935),
                    ),
                  ),
                  eventLoader: (day) => _events[day.toFormattedString()] ?? [],
                  onDaySelected: (bsDate, adDate) {
                    setState(() => _selectedDate = bsDate);
                  },
                ),
              ),
            ),

            const SizedBox(height: 16),

            // ── Selected date info ───────────────────────────────────────────
            if (_selectedDate != null) ...[
              const Text(
                'Selected Date',
                style: TextStyle(fontSize: 16, fontWeight: FontWeight.bold),
              ),
              const SizedBox(height: 8),
              Card(
                color: const Color(0xFFE53935).withValues(alpha: 0.08),
                shape: RoundedRectangleBorder(
                    borderRadius: BorderRadius.circular(10)),
                child: Padding(
                  padding: const EdgeInsets.all(12),
                  child: Column(
                    crossAxisAlignment: CrossAxisAlignment.start,
                    children: [
                      _InfoRow(
                          label: 'BS (formatted)',
                          value: _selectedDate!.toFormattedString()),
                      _InfoRow(
                          label: 'BS (English)',
                          value: _selectedDate!.toReadableStringEn()),
                      _InfoRow(
                          label: 'BS (Nepali)',
                          value: _selectedDate!.toReadableStringNp()),
                      _InfoRow(
                          label: 'AD',
                          value: NepaliDateConverter.bsToAd(_selectedDate!)
                              .toLocal()
                              .toString()
                              .split(' ')[0]),
                    ],
                  ),
                ),
              ),
            ],

            const SizedBox(height: 16),
            const Divider(),

            // ── Date picker button ───────────────────────────────────────────
            const Text(
              'Date Picker Dialog',
              style: TextStyle(fontSize: 16, fontWeight: FontWeight.bold),
            ),
            const SizedBox(height: 8),
            ElevatedButton.icon(
              style: ElevatedButton.styleFrom(
                backgroundColor: const Color(0xFFE53935),
                foregroundColor: Colors.white,
                shape: RoundedRectangleBorder(
                    borderRadius: BorderRadius.circular(8)),
              ),
              icon: const Icon(Icons.calendar_today),
              label: const Text('Open Nepali Date Picker'),
              onPressed: () async {
                final result = await showNepaliDatePicker(
                  context: context,
                  initialDate: _selectedDate ?? today,
                  locale: _locale,
                  showEnglishDate: _showEnglishDate,
                  primaryColor: const Color(0xFFE53935),
                );
                if (result != null) {
                  setState(() => _selectedDate = result.bsDate);
                }
              },
            ),

            const SizedBox(height: 32),
            const Divider(),

            // ── Converter demo ───────────────────────────────────────────────
            const Text(
              'Converter: Today',
              style: TextStyle(fontSize: 16, fontWeight: FontWeight.bold),
            ),
            const SizedBox(height: 8),
            Card(
              shape: RoundedRectangleBorder(
                  borderRadius: BorderRadius.circular(10)),
              child: Padding(
                padding: const EdgeInsets.all(12),
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    _InfoRow(
                        label: 'AD today',
                        value: DateTime.now()
                            .toLocal()
                            .toString()
                            .split(' ')[0]),
                    _InfoRow(
                        label: 'BS today',
                        value: NepaliDateConverter.toReadableEn(DateTime.now())),
                    _InfoRow(
                        label: 'BS (Nepali)',
                        value: NepaliDateConverter.toReadableNp(DateTime.now())),
                  ],
                ),
              ),
            ),
            const SizedBox(height: 32),
          ],
        ),
      ),
    );
  }
}

class _InfoRow extends StatelessWidget {
  final String label;
  final String value;
  const _InfoRow({required this.label, required this.value});

  @override
  Widget build(BuildContext context) {
    return Padding(
      padding: const EdgeInsets.symmetric(vertical: 3),
      child: Row(
        children: [
          Text('$label: ',
              style: const TextStyle(
                  fontWeight: FontWeight.w600, color: Colors.black54)),
          Text(value,
              style: const TextStyle(fontWeight: FontWeight.bold)),
        ],
      ),
    );
  }
}