kmpdfkit_demo/example/lib/main.dart

///
///  Copyright © 2014-2024 PDF Technologies, Inc. All Rights Reserved.
///
///  THIS SOURCE CODE AND ANY ACCOMPANYING DOCUMENTATION ARE PROTECTED BY INTERNATIONAL COPYRIGHT LAW
///  AND MAY NOT BE RESOLD OR REDISTRIBUTED. USAGE IS BOUND TO THE ComPDFKit LICENSE AGREEMENT.
///  UNAUTHORIZED REPRODUCTION OR DISTRIBUTION IS SUBJECT TO CIVIL AND CRIMINAL PENALTIES.
///  This notice may not be removed from this file.
///

import 'dart:io';

import 'package:compdfkit_flutter/compdfkit.dart';
import 'package:compdfkit_flutter/cpdf_configuration.dart';
import 'package:compdfkit_flutter_example/cpdf_reader_widget_example.dart';
import 'package:compdfkit_flutter_example/page/settings_page.dart';
import 'package:compdfkit_flutter_example/theme/themes.dart';
import 'package:compdfkit_flutter_example/utils/file_util.dart';
import 'package:file_picker/file_picker.dart';

import 'package:flutter/material.dart';
import 'package:flutter_svg/svg.dart';

import 'cpdf_fun_item.dart';

const String DOCUMENT_PATH = 'pdfs/PDF_Document.pdf';

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

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'ComPDFKit SDK for Flutter',
      theme: lightTheme,
      darkTheme: darkTheme,
      themeMode: ThemeMode.system,
      home: const HomePage(),
    );
  }
}

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

  @override
  State<HomePage> createState() => _HomePageState();
}

class _HomePageState extends State<HomePage> {
  @override
  void initState() {
    super.initState();
    _init();
  }

  void _init() async {
    // online license auth
    // Please replace it with your ComPDFKit license
    // ComPDFKit.initialize(androidOnlineLicense: 'IVTAsbJCW0X45qIy5cTEuzxZzKpYIpJe6WPY7uCPIiI=',iosOnlineLicense: 'lkw3Gr0HuD5pV1/+DVRSxp7qBlvK+Izo3mOKyAEHXz4=');

    // offline license auth
    ComPDFKit.init(
        '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');
  }

  void showDocument() async {
    File document = await extractAsset(context, DOCUMENT_PATH);
    ComPDFKit.openDocument(document.path,
        password: '', configuration: CPDFConfiguration());
  }

  void pickDocument() async {
    FilePickerResult? result = await FilePicker.platform.pickFiles(
      type: FileType.custom,
      allowedExtensions: ['pdf'],
    );
    if (result != null) {
      ComPDFKit.openDocument(result.files.first.path!,
          password: '', configuration: CPDFConfiguration());
    }
  }

  void showCPDFReaderWidget() async {
    File document = await extractAsset(context, DOCUMENT_PATH, shouldOverwrite: false);
    Navigator.push(context, MaterialPageRoute(builder: (context) {
      return CPDFReaderWidgetExample(documentPath: document.path);
    }));
  }

  @override
  Widget build(BuildContext context) {
    final exampleList = <Widget>[
      Text(
        'Modal View Examples',
        style: Theme.of(context).textTheme.bodyMedium,
      ),
      FeatureItem(
          title: 'Basic Example',
          description: 'Open sample pdf document',
          onTap: () => showDocument()),
      FeatureItem(
          title: 'Select External Files',
          description: 'Select pdf document from system file manager',
          onTap: () => pickDocument()),
      FeatureItem(
          title: 'Show CPDFReaderWidget',
          description: 'Display PDF view in flutter widget',
          onTap: () => showCPDFReaderWidget())
    ];

    return Scaffold(
        appBar: const CAppBar(), body: ExampleListView(widgets: exampleList));
  }
}

class ExampleListView extends StatelessWidget {
  final List<Widget> widgets;

  const ExampleListView({super.key, required this.widgets});

  @override
  Widget build(BuildContext context) {
    return Padding(
        padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
        child: ListView.builder(
            itemCount: widgets.length,
            itemBuilder: (context, index) {
              return widgets[index];
            }));
  }
}

class CAppBar extends StatelessWidget implements PreferredSizeWidget {
  const CAppBar({super.key});

  @override
  Widget build(BuildContext context) {
    return AppBar(
      title: const Text('ComPDFKit SDK for Flutter'),
      actions: [
        IconButton(
            padding: const EdgeInsets.all(16),
            onPressed: () {
              Navigator.push(context, MaterialPageRoute(builder: (context) {
                return const SettingsPage();
              }));
            },
            icon: SvgPicture.asset(
              'images/ic_home_setting.svg',
              width: 24,
              height: 24,
              color: Theme.of(context).colorScheme.onPrimary,
            ))
      ],
    );
  }

  @override
  Size get preferredSize => const Size(double.infinity, 56);
}