styled_text 3.0.0-beta+1

Text widget with formatted text using tags. Makes it easier to use formatted text in multilingual applications.

example/lib/main.dart

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

void main() => runApp(MyApp());

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

class DemoPage extends StatelessWidget {
  void _alert(BuildContext context, {String text = 'Tapped'}) {
    showDialog<void>(
      context: context,
      builder: (BuildContext context) {
        return AlertDialog(
          content: Text(text),
          actions: <Widget>[
            TextButton(
              child: Text('OK'),
              onPressed: () {
                Navigator.of(context).pop();
              },
            ),
          ],
        );
      },
    );
  }

  void _openLink(BuildContext context, Map<String?, String?> attrs) {
    final String? link = attrs['href'];

    showDialog<void>(
      context: context,
      builder: (BuildContext context) {
        return AlertDialog(
          title: Text('Open Link'),
          content: Text(link ?? 'Unknown link'),
          actions: <Widget>[
            TextButton(
              child: Text('Ok'),
              onPressed: () {
                Navigator.of(context).pop();
              },
            ),
          ],
        );
      },
    );
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('StyledText Demo'),
      ),
      body: Center(
        child: SingleChildScrollView(
          padding: const EdgeInsets.symmetric(vertical: 32),
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: <Widget>[
              // Simple formatted text
              StyledText(
                text: 'Test: <b>bold</b> text.',
                tags: {
                  'b': StyledTextTag(
                      style: TextStyle(fontWeight: FontWeight.bold)),
                },
              ),

              // Nested multiple styles
              StyledText(
                text: 'Test: <b>bold <i>italic</i> bold</b> text.',
                tags: {
                  'b': StyledTextTag(
                      style: TextStyle(fontWeight: FontWeight.bold)),
                  'i': StyledTextTag(
                      style: TextStyle(fontStyle: FontStyle.italic)),
                },
              ),

              // Text with quotes
              StyledText(
                text: 'Quote test: <b>&quot;bold&quot;</b> text.',
                tags: {
                  'b': StyledTextTag(
                      style: TextStyle(fontWeight: FontWeight.bold)),
                },
              ),

              // Multiline text without breaks
              const SizedBox(height: 20),
              StyledText(
                newLineAsBreaks: false,
                text: """Multiline text 
(wo breaks)""",
                tags: {
                  'b': StyledTextTag(
                      style: TextStyle(fontWeight: FontWeight.bold)),
                },
              ),

              // Multiline text with breaks
              const SizedBox(height: 20),
              StyledText(
                text: """Multiline text
(with breaks)""",
                tags: {
                  'b': StyledTextTag(
                      style: TextStyle(fontWeight: FontWeight.bold)),
                },
              ),

              // Text with icon
              const SizedBox(height: 20),
              StyledText(
                text: 'Text with alarm <alarm/> icon.',
                tags: {
                  'alarm': StyledTextIconTag(
                    Icons.alarm,
                    color: Colors.teal,
                    size: 18,
                    onTap: (text, attributes) =>
                        _alert(context, text: 'Alarm Tapped'),
                  ),
                },
              ),

              // Text with icon inside styled text
              const SizedBox(height: 20),
              StyledText(
                text: 'Text with <red>alarm <alarm/> icon</red>.',
                tags: {
                  'red': StyledTextTag(style: TextStyle(color: Colors.red)),
                  'alarm': StyledTextIconTag(
                    Icons.alarm,
                    color: Colors.teal,
                    size: 18,
                    onTap: (text, attributes) =>
                        _alert(context, text: 'Alarm Tapped'),
                  ),
                },
              ),

              // Text with link
              const SizedBox(height: 20),
              StyledText(
                text:
                    'Text with <link href="https://flutter.dev">link</link> inside.',
                tags: {
                  'link': StyledTextActionTag(
                    (_, attrs) => _openLink(context, attrs),
                    style: TextStyle(decoration: TextDecoration.underline),
                  ),
                },
              ),

              // Text with action
              const SizedBox(height: 20),
              StyledText(
                text:
                    'Text with <action><red>red</red> action</action> inside.',
                tags: {
                  'red': StyledTextTag(style: TextStyle(color: Colors.red)),
                  'action': StyledTextActionTag(
                    (text, attributes) => _alert(context),
                    style: TextStyle(decoration: TextDecoration.underline),
                  ),
                },
              ),

              // Text with widget
              const SizedBox(height: 20),
              StyledText(
                text: 'Text with <input/> inside.',
                tags: {
                  'input': StyledTextWidgetTag(
                    TextField(
                      decoration: InputDecoration(
                        hintText: 'Input',
                      ),
                    ),
                    size: Size.fromWidth(200),
                    constraints: BoxConstraints.tight(Size(100, 50)),
                  ),
                },
              ),

              const Divider(height: 40),

              // Selectable text
              StyledText.selectable(
                text: 'Test: selectable <b>bold</b> text.',
                tags: {
                  'b': StyledTextTag(
                      style: TextStyle(fontWeight: FontWeight.bold)),
                },
              ),

              const Divider(height: 40),

              // Text with custom color tag
              StyledText(
                text:
                    'Text with custom <color text="#ff5500">color</color> text.',
                tags: {
                  'color': StyledTextCustomTag(
                      baseStyle: TextStyle(fontStyle: FontStyle.italic),
                      parse: (baseStyle, attributes) {
                        if (attributes.containsKey('text') &&
                            (attributes['text']!.substring(0, 1) == '#') &&
                            attributes['text']!.length >= 6) {
                          final String hexColor =
                              attributes['text']!.substring(1);
                          final String alphaChannel = (hexColor.length == 8)
                              ? hexColor.substring(6, 8)
                              : 'FF';
                          final Color color = Color(int.parse(
                              '0x$alphaChannel' + hexColor.substring(0, 6)));
                          return baseStyle?.copyWith(color: color);
                        } else {
                          return baseStyle;
                        }
                      }),
                },
              ),
            ],
          ),
        ),
      ),
    );
  }
}