doubletosinhala 0.0.1

A Flutter and Dart library to convert double and numeric values into Sinhala words, supporting currency format, decimals, and large numbers.

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:doubletosinhala/doubletosinhala.dart';

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

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Double to Sinhala Demo',
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
        useMaterial3: true,
      ),
      home: const ConversionHomePage(),
    );
  }
}

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

  @override
  State<ConversionHomePage> createState() => _ConversionHomePageState();
}

class _ConversionHomePageState extends State<ConversionHomePage> {
  final TextEditingController _controller =
      TextEditingController(text: '1250.75');
  double _currentValue = 1250.75;
  bool _includeRupeesPrefix = true;
  bool _appendOnly = true;

  @override
  void initState() {
    super.initState();
    _controller.addListener(_onTextChanged);
  }

  @override
  void dispose() {
    _controller.removeListener(_onTextChanged);
    _controller.dispose();
    super.dispose();
  }

  void _onTextChanged() {
    final parsed = double.tryParse(_controller.text.trim());
    setState(() {
      _currentValue = parsed ?? 0.0;
    });
  }

  @override
  Widget build(BuildContext context) {
    final standardWords = _currentValue.toSinhalaWords();
    final currencyWords = _currentValue.toSinhalaCurrency(
      appendOnly: _appendOnly,
      includeRupeesPrefix: _includeRupeesPrefix,
    );
    final decimalWords =
        _currentValue.toSinhalaWords(format: SinhalaFormat.decimal);

    return Scaffold(
      appBar: AppBar(
        title: const Text('Double to Sinhala Converter'),
        elevation: 2,
      ),
      body: SingleChildScrollView(
        padding: const EdgeInsets.all(20.0),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.stretch,
          children: [
            Card(
              elevation: 0,
              color: Theme.of(context).colorScheme.surfaceContainerHighest,
              child: Padding(
                padding: const EdgeInsets.all(16.0),
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    Text(
                      'Input Numeric / Double Value',
                      style: Theme.of(context).textTheme.titleMedium?.copyWith(
                            fontWeight: FontWeight.bold,
                          ),
                    ),
                    const SizedBox(height: 12),
                    TextField(
                      controller: _controller,
                      keyboardType:
                          const TextInputType.numberWithOptions(decimal: true),
                      decoration: const InputDecoration(
                        border: OutlineInputBorder(),
                        labelText: 'Enter number (e.g. 1250.75)',
                        prefixIcon: Icon(Icons.calculate),
                      ),
                    ),
                    const SizedBox(height: 12),
                    Wrap(
                      spacing: 8,
                      children: [
                        ActionChip(
                          label: const Text('100.00'),
                          onPressed: () => _controller.text = '100.00',
                        ),
                        ActionChip(
                          label: const Text('1234.50'),
                          onPressed: () => _controller.text = '1234.50',
                        ),
                        ActionChip(
                          label: const Text('50000.25'),
                          onPressed: () => _controller.text = '50000.25',
                        ),
                        ActionChip(
                          label: const Text('1000000'),
                          onPressed: () => _controller.text = '1000000',
                        ),
                      ],
                    ),
                  ],
                ),
              ),
            ),
            const SizedBox(height: 20),
            _buildResultCard(
              context,
              title: 'Standard Words (සාමාන්‍ය වචන)',
              content: standardWords,
              icon: Icons.text_fields,
            ),
            const SizedBox(height: 16),
            _buildResultCard(
              context,
              title: 'Sri Lankan Currency (රුපියල් සහ ශත)',
              content: currencyWords,
              icon: Icons.payments,
              extraControls: Row(
                children: [
                  FilterChip(
                    label: const Text('"රුපියල්" Prefix'),
                    selected: _includeRupeesPrefix,
                    onSelected: (val) =>
                        setState(() => _includeRupeesPrefix = val),
                  ),
                  const SizedBox(width: 8),
                  FilterChip(
                    label: const Text('"පමණි" Suffix'),
                    selected: _appendOnly,
                    onSelected: (val) => setState(() => _appendOnly = val),
                  ),
                ],
              ),
            ),
            const SizedBox(height: 16),
            _buildResultCard(
              context,
              title: 'Decimal Reading (දශම කියවීම)',
              content: decimalWords,
              icon: Icons.numbers,
            ),
          ],
        ),
      ),
    );
  }

  Widget _buildResultCard(
    BuildContext context, {
    required String title,
    required String content,
    required IconData icon,
    Widget? extraControls,
  }) {
    return Card(
      elevation: 2,
      child: Padding(
        padding: const EdgeInsets.all(16.0),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            Row(
              children: [
                Icon(icon, color: Theme.of(context).colorScheme.primary),
                const SizedBox(width: 8),
                Expanded(
                  child: Text(
                    title,
                    style: Theme.of(context).textTheme.titleSmall?.copyWith(
                          fontWeight: FontWeight.bold,
                        ),
                  ),
                ),
                IconButton(
                  icon: const Icon(Icons.copy, size: 18),
                  tooltip: 'Copy',
                  onPressed: () {
                    Clipboard.setData(ClipboardData(text: content));
                    ScaffoldMessenger.of(context).showSnackBar(
                      const SnackBar(
                        content: Text('Copied to clipboard!'),
                        duration: Duration(seconds: 1),
                      ),
                    );
                  },
                ),
              ],
            ),
            if (extraControls != null) ...[
              const SizedBox(height: 8),
              extraControls,
            ],
            const Divider(),
            SelectableText(
              content,
              style: Theme.of(context).textTheme.headlineSmall?.copyWith(
                    fontSize: 18,
                    fontWeight: FontWeight.w500,
                    color: Theme.of(context).colorScheme.onSurface,
                  ),
            ),
          ],
        ),
      ),
    );
  }
}