generated from dellevin/template
基础epub阅读功能
This commit is contained in:
DelLevin-Home
117
lib/utils/reader/book_annotation_dao.dart
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117
lib/utils/reader/book_annotation_dao.dart
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@@ -0,0 +1,117 @@
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import 'package:sqflite/sqflite.dart';
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import '../../models/book_annotation.dart';
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import '../database_helper.dart';
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/// 书籍批注数据访问对象
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class BookAnnotationDao {
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final DatabaseHelper _dbHelper = DatabaseHelper.instance;
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Future<Database> get _db async => await _dbHelper.database;
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/// 插入批注，返回插入的 id
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Future<int> insert(BookAnnotation annotation) async {
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final db = await _db;
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return await db.insert('book_annotations', annotation.toMap()..remove('id'));
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}
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/// 更新批注
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Future<void> update(BookAnnotation annotation) async {
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final db = await _db;
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await db.update(
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'book_annotations',
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annotation.toMap(),
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where: 'id = ?',
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whereArgs: [annotation.id],
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);
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}
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/// 保存（有 id 则更新，无 id 则插入）
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Future<BookAnnotation> save(BookAnnotation annotation) async {
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if (annotation.id != null) {
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await update(annotation);
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return annotation;
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}
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final id = await insert(annotation);
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return annotation.copyWith(id: id);
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}
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/// 根据 id 删除
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Future<void> deleteById(int id) async {
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final db = await _db;
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await db.delete('book_annotations', where: 'id = ?', whereArgs: [id]);
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}
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/// 根据 CFI 删除（用于删除高亮/下划线）
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Future<void> deleteByCfi(String bookId, String cfi) async {
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final db = await _db;
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await db.delete(
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'book_annotations',
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where: 'book_id = ? AND cfi = ?',
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whereArgs: [bookId, cfi],
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);
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}
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/// 查询某本书的所有批注
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Future<List<BookAnnotation>> getByBookId(String bookId) async {
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final db = await _db;
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final maps = await db.query(
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'book_annotations',
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where: 'book_id = ?',
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whereArgs: [bookId],
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orderBy: 'created_at DESC',
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);
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return maps.map((m) => BookAnnotation.fromMap(m)).toList();
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}
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/// 查询某本书的某种类型批注
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Future<List<BookAnnotation>> getByBookIdAndType(String bookId, String type) async {
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final db = await _db;
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final maps = await db.query(
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'book_annotations',
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where: 'book_id = ? AND type = ?',
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whereArgs: [bookId, type],
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orderBy: 'created_at DESC',
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);
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return maps.map((m) => BookAnnotation.fromMap(m)).toList();
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}
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/// 查询某本书的所有书签
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Future<List<BookAnnotation>> getBookmarks(String bookId) async {
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return getByBookIdAndType(bookId, 'bookmark');
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}
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/// 查询某本书的所有高亮/下划线
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Future<List<BookAnnotation>> getAnnotations(String bookId) async {
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final db = await _db;
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final maps = await db.query(
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'book_annotations',
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where: "book_id = ? AND type IN ('highlight', 'underline')",
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whereArgs: [bookId],
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orderBy: 'created_at DESC',
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);
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return maps.map((m) => BookAnnotation.fromMap(m)).toList();
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}
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/// 根据 id 查询
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Future<BookAnnotation?> getById(int id) async {
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final db = await _db;
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final maps = await db.query(
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'book_annotations',
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where: 'id = ?',
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whereArgs: [id],
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limit: 1,
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);
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if (maps.isEmpty) return null;
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return BookAnnotation.fromMap(maps.first);
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}
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/// 获取某本书的批注数量
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Future<int> getCount(String bookId) async {
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final db = await _db;
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final result = await db.rawQuery(
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'SELECT COUNT(*) as cnt FROM book_annotations WHERE book_id = ?',
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[bookId],
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);
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return Sqflite.firstIntValue(result) ?? 0;
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}
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}
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12
lib/utils/reader/coordinates_to_part.dart
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12
lib/utils/reader/coordinates_to_part.dart
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@@ -0,0 +1,12 @@
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/// 将归一化坐标 (0-1) 映射到 3x3 九宫格区域 (0-8)
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///
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/// ```
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/// 0 1 2
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/// 3 4 5
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/// 6 7 8
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/// ```
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int coordinatesToPart(double x, double y) {
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final col = x < 0.33 ? 0 : (x < 0.66 ? 1 : 2);
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final row = y < 0.33 ? 0 : (y < 0.66 ? 1 : 2);
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return row * 3 + col;
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}
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@@ -1,6 +1,5 @@
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import 'dart:convert';
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import '../../service/book_server.dart';
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import '../color_converter.dart';
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/// 生成 foliate-js 阅读器 URL
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String generateReaderUrl({
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@@ -12,11 +11,11 @@ String generateReaderUrl({
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}) {
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final indexHtmlPath = 'http://127.0.0.1:${Server().port}/foliate-js/index.html';
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final jsBg = convertDartColorToJs(backgroundColor);
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final jsTc = convertDartColorToJs(textColor);
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final jsBg = _convertDartColorToJs(backgroundColor);
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final jsTc = _convertDartColorToJs(textColor);
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final style = {
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'fontSize': 100, // 100 = base 100%
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'fontSize': 100,
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'fontName': '',
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'fontPath': '',
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'fontWeight': 400,
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@@ -28,7 +27,7 @@ String generateReaderUrl({
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'backgroundColor': '#$jsBg',
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'topMargin': 25,
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'bottomMargin': 25,
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'sideMargin': 15,
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'sideMargin': 3,
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'justify': true,
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'hyphenate': false,
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'pageTurnStyle': 'slide',
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@@ -48,17 +47,11 @@ String generateReaderUrl({
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'codeHighlightTheme': 'atom-one-light',
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};
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final readingRules = {
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'convertChineseMode': 'none',
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'bionicReadingMode': false,
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};
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final params = {
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'importing': false,
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'url': fileUrl,
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'initialCfi': cfi,
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'style': style,
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'readingRules': readingRules,
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};
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final queryParts = params.entries
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@@ -67,3 +60,14 @@ String generateReaderUrl({
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return '$indexHtmlPath?$queryParts';
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}
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/// 将 Dart 的 ARGB hex (FFRRGGBB) 转成 CSS 的 #RRGGBB 格式
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String _convertDartColorToJs(String dartColor) {
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if (dartColor.startsWith('#')) {
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dartColor = dartColor.substring(1);
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}
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if (dartColor.length == 8) {
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return '#${dartColor.substring(2)}';
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}
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return '#$dartColor';
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}
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