latext 0.5.0

Efficiently display scientific LaTeX equations on Android, iOS, Web, and Desktop platforms using the flutter_math library, without relying on WebView or JavaScript.

example/lib/main.dart

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

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

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter LaTeX Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: const MyHomePage(),
    );
  }
}

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

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  final TextEditingController _laTeXInputController = TextEditingController(
    text: r'What do you think about $L'
        '\''
        r' = {L}{\sqrt{1-\frac{v^2}{c^2}}}$ ?'
        r'\n'
        r'And some display $\LaTeX$: $$\boxed{\rm{A function: } f(x) = \frac{5}{3} \cdot x}$$'
        r'\n'
        r'$\KaTeX$-Flutter provides easy processing of $LaTeX$ embedded into any text.'
        r'\n'
        r'$$\left\{\begin{array}{l}3 x-4 y=1 \\ -3 x+7 y=5\end{array}\right.$$',
  );
  late String _laTeX;

  @override
  void initState() {
    _renderLaTeX();
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
        appBar: AppBar(
          title: const Text('LaTexT Flutter Home Page'),
        ),
        body: SingleChildScrollView(
          padding: const EdgeInsets.all(8.0),
          child: Column(
            children: <Widget>[
              Padding(
                padding: const EdgeInsets.all(8.0),
                child: TextField(
                  keyboardType: TextInputType.multiline,
                  maxLines: null,
                  decoration: const InputDecoration(
                      labelText: 'Your LaTeX code here',
                      helperText:
                          'Use \$ as delimiter. Use \$\$ for display LaTeX.'),
                  controller: _laTeXInputController,
                ),
              ),
              Builder(
                builder: (context) => LaTexT(
                  laTeXCode: Text(
                    _laTeX,
                    style: Theme.of(context).textTheme.bodyMedium,
                  ),
                ),
              )
            ],
          ),
        ),
        floatingActionButton: FloatingActionButton.extended(
          onPressed: _renderLaTeX,
          tooltip: 'Render again. Only working on mobile platform.',
          label: const Text('Render LaTeX'),
          icon: const Icon(Icons.crop_rotate),
        ));
  }

  void _renderLaTeX() {
    setState(() {
      _laTeX = _laTeXInputController.text;
    });
  }
}