sh_pdf 1.0.0

A high-performance, optimized custom PDF viewer for Flutter with support for URLs, local files, zoom, and pagination.

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:file_picker/file_picker.dart';
import 'package:sh_pdf/sh_pdf.dart';

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

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Optimized PDF Viewer',
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.blue),
        useMaterial3: true,
      ),
      home: const MyHomePage(title: 'Custom PDF Viewer'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});
  final String title;

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

class _MyHomePageState extends State<MyHomePage> {
  final TextEditingController _urlController = TextEditingController(
    text:
        'https://www.w3.org/WAI/ER/tests/xhtml/testfiles/resources/pdf/dummy.pdf',
  );

  @override
  void dispose() {
    _urlController.dispose();
    super.dispose();
  }

  Future<void> _pickFile() async {
    FilePickerResult? result = await FilePicker.platform.pickFiles(
      type: FileType.custom,
      allowedExtensions: ['pdf'],
    );

    if (result != null && result.files.single.path != null) {
      if (mounted) {
        Navigator.push(
          context,
          MaterialPageRoute(
            builder: (context) => CustomPdfViewer.file(
              result.files.single.path!,
            ),
          ),
        );
      }
    }
  }

  void _loadFromUrl() {
    final url = _urlController.text.trim();
    if (url.isNotEmpty) {
      Navigator.push(
        context,
        MaterialPageRoute(
          builder: (context) => CustomPdfViewer.url(
            url,
          ),
        ),
      );
    } else {
      ScaffoldMessenger.of(context).showSnackBar(
        const SnackBar(content: Text('Please enter a valid URL')),
      );
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
        title: Text(widget.title),
      ),
      body: SingleChildScrollView(
        padding: const EdgeInsets.all(24.0),
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            const Icon(Icons.picture_as_pdf, size: 80, color: Colors.blue),
            const SizedBox(height: 32),
            TextField(
              controller: _urlController,
              decoration: InputDecoration(
                labelText: 'PDF URL',
                hintText: 'https://example.com/sample.pdf',
                border: OutlineInputBorder(
                  borderRadius: BorderRadius.circular(12),
                ),
                suffixIcon: IconButton(
                  icon: const Icon(Icons.clear),
                  onPressed: () => _urlController.clear(),
                ),
              ),
              keyboardType: TextInputType.url,
            ),
            const SizedBox(height: 16),
            ElevatedButton.icon(
              onPressed: _loadFromUrl,
              icon: const Icon(Icons.link),
              label: const Text('Load PDF from URL'),
              style: ElevatedButton.styleFrom(
                minimumSize: const Size(double.infinity, 56),
                shape: RoundedRectangleBorder(
                  borderRadius: BorderRadius.circular(12),
                ),
              ),
            ),
            const SizedBox(height: 16),
            const Row(
              children: [
                Expanded(child: Divider()),
                Padding(
                  padding: EdgeInsets.symmetric(horizontal: 16),
                  child: Text('OR'),
                ),
                Expanded(child: Divider()),
              ],
            ),
            const SizedBox(height: 16),
            OutlinedButton.icon(
              onPressed: _pickFile,
              icon: const Icon(Icons.storage),
              label: const Text('Pick PDF from Storage'),
              style: OutlinedButton.styleFrom(
                minimumSize: const Size(double.infinity, 56),
                shape: RoundedRectangleBorder(
                  borderRadius: BorderRadius.circular(12),
                ),
              ),
            ),
          ],
        ),
      ),
    );
  }
}