e_book_reader 0.0.4

A powerful E-Book Reader for Flutter apps. Features adjustable text styles, light/dark modes, horizontal/vertical layouts, and scroll tracking. Perfect for a smooth, user-friendly reading experience.

example/lib/main.dart

import 'dart:convert';

import 'package:e_book_reader/config.dart';
import 'package:e_book_reader/e_book_reader.dart';
import 'package:e_book_reader/reader_controller.dart';
import 'package:e_book_reader/reader_pull_to_refresh.dart';
import 'package:example/const.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:shared_preferences/shared_preferences.dart';

void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  var pref = await SharedPreferences.getInstance();
  runApp(MyApp(pref: pref));
}

class MyApp extends StatelessWidget {
  final SharedPreferences pref;
  const MyApp({super.key, required this.pref});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
        useMaterial3: true,
      ),
      home: HomePage(pref: pref),
    );
  }
}

enum ScreenMode { full, more, settings }

class HomePage extends StatefulWidget {
  final SharedPreferences pref;
  const HomePage({super.key, required this.pref});

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

class _HomePageState extends State<HomePage> {
  late ReaderController _readerController;

  ScreenMode _screenMode = ScreenMode.full;
  Color color = Colors.white;

  @override
  void initState() {
    _readerController =
        ReaderController(pref: SharedConfigPrefrenceImpl(widget.pref));
    _readerController.load(longText);

    _readerController.addScrollListener(() {
      setState(() {});
    });
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return Material(
      color: color,
      child: SafeArea(
        child: Scaffold(
          backgroundColor: Colors.transparent,
          appBar: AppBar(
            title: const Text("Title"),
            backgroundColor: color,
            actions: [
              Text("${(_readerController.rate * 100).toStringAsFixed(0)}%"),
              const SizedBox(
                width: 16,
              ),
              Text(
                  "${_readerController.currentPage} / ${_readerController.totalPage}")
            ],
          ),
          extendBody: true,
          body: Stack(
            children: [
              ReaderPullToRefresh(
                onRefreshTop: () async {
                  await Future.delayed(const Duration(seconds: 2));
                  return;
                },
                onRefreshBottom: () async {
                  await Future.delayed(const Duration(seconds: 2));
                  return;
                },
                loading: const CupertinoActivityIndicator(),
                child: ReaderContent(
                  controller: _readerController,
                ),
              ),
              GestureDetector(
                behavior: HitTestBehavior.translucent,
                onTap: () {
                  if (ScreenMode.full == _screenMode) {
                    _screenMode = ScreenMode.settings;
                  } else if (ScreenMode.settings == _screenMode) {
                    _screenMode = ScreenMode.full;
                  } else if (ScreenMode.more == _screenMode) {
                    _screenMode = ScreenMode.settings;
                  }

                  setState(() {});
                },
                child: Container(),
              ),
            ],
          ),
          bottomNavigationBar: buildSheet(),
        ),
      ),
    );
  }

  Widget? buildSheet() {
    switch (_screenMode) {
      case ScreenMode.full:
        return null;

      case ScreenMode.settings:
        return IntrinsicHeight(
          child: Container(
              color: color,
              child: SafeArea(
                child: Column(
                  children: [
                    const Divider(
                      height: 1,
                    ),
                    Slider(
                      value: _readerController.rate,
                      min: 0,
                      max: 1,
                      onChanged: (value) {
                        _readerController.scrollToRate(value);
                      },
                    ),
                    if (_readerController.totalPage > 0)
                      Slider(
                        divisions: _readerController.totalPage,
                        label: _readerController.currentPage.toString(),
                        value: _readerController.currentPage.toDouble(),
                        min: 0,
                        max: _readerController.totalPage.toDouble(),
                        onChanged: (value) {
                          _readerController.scrollToPage(value.toInt());
                        },
                      ),
                    Row(
                      mainAxisAlignment: MainAxisAlignment.spaceAround,
                      children: [
                        IconButton(
                            onPressed: () {},
                            icon: const Column(
                              children: [
                                Icon(Icons.list),
                                Text("Bölümler"),
                              ],
                            )),
                        IconButton(
                            onPressed: () {
                              if (_readerController.config.backgroundColor ==
                                  Colors.black) {
                                _readerController.setColor(
                                    Colors.white, Colors.black);
                              } else {
                                _readerController.setColor(
                                    Colors.black, Colors.white);
                              }
                            },
                            icon: Column(
                              children: [
                                const Icon(Icons.light),
                                Text(_readerController.config.backgroundColor ==
                                        Colors.black
                                    ? "Light"
                                    : "Dark"),
                              ],
                            )),
                        IconButton(
                            onPressed: () {
                              _screenMode = ScreenMode.more;
                              setState(() {});
                            },
                            icon: const Column(
                              children: [
                                Icon(Icons.more_horiz),
                                Text("More"),
                              ],
                            )),
                      ],
                    )
                  ],
                ),
              )),
        );
      case ScreenMode.more:
        return Container(
          color: color,
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            mainAxisSize: MainAxisSize.min,
            children: [
              const Divider(
                height: 1,
              ),
              Padding(
                padding:
                    const EdgeInsets.symmetric(horizontal: 16, vertical: 15),
                child: Row(
                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
                  children: [
                    const Color(0xFFFFFFFF),
                    const Color(0xFFC9DDC6),
                    const Color(0xFFFADED7),
                    const Color(0xFFEBE8E1),
                    const Color(0xFFE3EAE9),
                    const Color(0xFFCBD0EE)
                  ]
                      .map(
                        (e) => InkWell(
                          onTap: () {
                            _readerController.setColor(e, Colors.black);
                          },
                          child: Container(
                            width: 32,
                            height: 32,
                            decoration: BoxDecoration(
                                color: e,
                                shape: BoxShape.circle,
                                border: Border.all()),
                          ),
                        ),
                      )
                      .toList(),
                ),
              ),
              SingleChildScrollView(
                padding: const EdgeInsets.symmetric(horizontal: 16),
                scrollDirection: Axis.horizontal,
                child: SegmentedButton(
                    showSelectedIcon: false,
                    style: SegmentedButton.styleFrom(
                      visualDensity:
                          const VisualDensity(horizontal: -3, vertical: -3),
                    ),
                    segments: TextAlign.values
                        .map(
                          (e) => ButtonSegment(
                              value: e, label: FittedBox(child: Text(e.name))),
                        )
                        .toList(),
                    onSelectionChanged: (p) {
                      _readerController.setTextAlign(p.first);
                    },
                    selected: {_readerController.config.textAlign}),
              ),
              const SizedBox(
                height: 8,
              ),
              SingleChildScrollView(
                padding: const EdgeInsets.symmetric(horizontal: 16),
                scrollDirection: Axis.horizontal,
                child: SegmentedButton<FontStyle>(
                    showSelectedIcon: false,
                    style: SegmentedButton.styleFrom(
                      visualDensity:
                          const VisualDensity(horizontal: -3, vertical: -3),
                    ),
                    segments: FontStyle.values
                        .map(
                          (e) => ButtonSegment(
                              value: e, label: FittedBox(child: Text(e.name))),
                        )
                        .toList(),
                    onSelectionChanged: (p) {
                      _readerController.setFontStyle(p.first);
                    },
                    selected: {_readerController.config.fontStyle}),
              ),
              Padding(
                padding: const EdgeInsets.symmetric(horizontal: 16),
                child: Wrap(
                  children: [
                    PopupMenuButton<String>(
                        onSelected: (v) {
                          _readerController.setFontFamily(v);
                        },
                        icon: const Icon(Icons.font_download),
                        itemBuilder: (c) => _readerController.fonts
                            .map((e) => PopupMenuItem(
                                value: e, child: Text(e.toString())))
                            .toList()),
                    IconButton(
                        onPressed: () {
                          _readerController.setAxis(
                              _readerController.config.axis == Axis.horizontal
                                  ? Axis.vertical
                                  : Axis.horizontal);
                        },
                        icon: Icon(
                            _readerController.config.axis == Axis.vertical
                                ? Icons.vertical_distribute
                                : Icons.horizontal_distribute)),
                    PopupMenuButton<int>(
                        onSelected: (v) {
                          _readerController.setFontWeight(FontWeight.values
                              .firstWhere((element) => element.value == v));
                        },
                        icon: const Icon(Icons.format_bold_rounded),
                        itemBuilder: (c) => FontWeight.values
                            .map((e) => PopupMenuItem(
                                value: e.value,
                                child: Text(e.value.toString())))
                            .toList()),
                    IconButton(
                        onPressed: () {
                          _readerController.setFontSize(
                              _readerController.config.fontSize - 1);
                        },
                        icon: const Icon(Icons.text_decrease)),
                    IconButton(
                        onPressed: () {
                          _readerController.setFontSize(
                              _readerController.config.fontSize + 1);
                        },
                        icon: const Icon(Icons.text_increase_rounded)),
                    IconButton(
                        onPressed: () {
                          _readerController.setLineHeight(
                              _readerController.config.lineHeight - 0.1);
                        },
                        icon: const Icon(Icons.text_rotate_vertical_rounded)),
                    IconButton(
                        onPressed: () {
                          _readerController.setLineHeight(
                              _readerController.config.lineHeight + 0.1);
                        },
                        icon: const Icon(Icons.text_rotate_up_outlined)),
                  ],
                ),
              )
            ],
          ),
        );
    }
  }
}

class SharedConfigPrefrenceImpl extends SharedConfigPreference {
  final SharedPreferences _pref;
  SharedConfigPrefrenceImpl(this._pref);
  @override
  ReaderConfig? load() {
    ReaderConfig? config;
    String? data = _pref.getString("ReaderConfig3");
    if (data == null) {
      return null;
    }
    try {
      config = ReaderConfig.fromJson(json.decode(data));
    } catch (e) {
      print(e);
    }
    return config;
  }

  @override
  void save(ReaderConfig config) {
    _pref.setString("ReaderConfig3", json.encode(config.toJson()));
  }
}