refactor: split reader architecture and chrome handling
This commit is contained in:
shen
@@ -0,0 +1,350 @@
|
||||
import Foundation
|
||||
|
||||
public struct RDEPUBSelection: Codable, Equatable {
|
||||
/// 书籍标识符
|
||||
public var bookIdentifier: String?
|
||||
/// 选择发生的位置
|
||||
public var location: RDEPUBLocation
|
||||
/// 选中的文本内容
|
||||
public var text: String
|
||||
/// DOM Range 信息（JSON 序列化字符串，用于精确重建选区）
|
||||
public var rangeInfo: String?
|
||||
/// 选择创建时间
|
||||
public var createdAt: Date
|
||||
|
||||
public init(
|
||||
bookIdentifier: String? = nil,
|
||||
location: RDEPUBLocation,
|
||||
text: String,
|
||||
rangeInfo: String? = nil,
|
||||
createdAt: Date = Date()
|
||||
) {
|
||||
self.bookIdentifier = bookIdentifier
|
||||
self.location = location
|
||||
self.text = text
|
||||
self.rangeInfo = rangeInfo?.nilIfEmpty
|
||||
self.createdAt = createdAt
|
||||
}
|
||||
|
||||
/// 判断是否为空选择（无文本或无范围信息）
|
||||
public var isEmpty: Bool {
|
||||
text.trimmingCharacters(in: .whitespacesAndNewlines).isEmpty || rangeInfo?.isEmpty != false
|
||||
}
|
||||
}
|
||||
|
||||
/// 高亮样式类型
|
||||
/// - highlight: 背景色高亮
|
||||
/// - underline: 下划线标记
|
||||
public enum RDEPUBHighlightStyle: String, Codable {
|
||||
case highlight
|
||||
case underline
|
||||
}
|
||||
|
||||
/// 统一标注类型，对标 WXRead 的 WRBookmark 语义分层。
|
||||
public enum RDEPUBAnnotationKind: String, Codable, Equatable {
|
||||
case bookmark
|
||||
case highlight
|
||||
case underline
|
||||
}
|
||||
|
||||
/// 标注菜单操作类型，用于用户长按选中文本后的操作选项
|
||||
public enum RDEPUBAnnotationMenuAction: Equatable {
|
||||
case copy
|
||||
case highlight
|
||||
case annotate
|
||||
}
|
||||
|
||||
/// 文本偏移范围信息，用于文本 EPUB 的高亮精确定位
|
||||
/// 使用字符偏移量而非 DOM Range，适用于 DTCoreText 渲染的纯文本内容
|
||||
public struct RDEPUBTextOffsetRangeInfo: Codable, Equatable {
|
||||
/// 类型标识符，固定为 "text-offset"
|
||||
public var kind: String
|
||||
/// 资源路径
|
||||
public var href: String
|
||||
/// 起始字符偏移量
|
||||
public var start: Int
|
||||
/// 结束字符偏移量
|
||||
public var end: Int
|
||||
|
||||
/// 初始化文本偏移范围
|
||||
/// - Parameters:
|
||||
/// - href: 资源路径
|
||||
/// - start: 起始字符偏移量
|
||||
/// - end: 结束字符偏移量
|
||||
public init(href: String, start: Int, end: Int) {
|
||||
self.kind = "text-offset"
|
||||
self.href = href
|
||||
self.start = start
|
||||
self.end = end
|
||||
}
|
||||
|
||||
/// 转换为 NSRange（用于 NSAttributedString 操作）
|
||||
public var nsRange: NSRange? {
|
||||
guard end > start else { return nil }
|
||||
return NSRange(location: start, length: end - start)
|
||||
}
|
||||
|
||||
/// 序列化为 JSON 字符串
|
||||
public func jsonString() -> String? {
|
||||
guard let data = try? JSONEncoder().encode(self) else { return nil }
|
||||
return String(data: data, encoding: .utf8)
|
||||
}
|
||||
|
||||
/// 从 JSON 字符串反序列化，校验 kind 和范围有效性
|
||||
public static func decode(from string: String?) -> RDEPUBTextOffsetRangeInfo? {
|
||||
guard let string,
|
||||
let data = string.data(using: .utf8),
|
||||
let rangeInfo = try? JSONDecoder().decode(RDEPUBTextOffsetRangeInfo.self, from: data),
|
||||
rangeInfo.kind == "text-offset",
|
||||
rangeInfo.end > rangeInfo.start else {
|
||||
return nil
|
||||
}
|
||||
return rangeInfo
|
||||
}
|
||||
}
|
||||
|
||||
/// 文本分页截断原因，描述为什么在当前位置分页
|
||||
public struct RDEPUBHighlight: Codable, Equatable {
|
||||
/// 高亮唯一标识符
|
||||
public var id: String
|
||||
/// 书籍标识符
|
||||
public var bookIdentifier: String?
|
||||
/// 高亮发生的位置
|
||||
public var location: RDEPUBLocation
|
||||
/// 高亮的文本内容
|
||||
public var text: String
|
||||
/// 范围信息（Web EPUB 为 DOM Range JSON，文本 EPUB 为字符偏移 JSON）
|
||||
public var rangeInfo: String?
|
||||
/// 高亮样式（背景色高亮或下划线）
|
||||
public var style: RDEPUBHighlightStyle
|
||||
/// 高亮颜色（CSS 颜色值，如 "#F8E16C"）
|
||||
public var color: String
|
||||
/// 用户备注
|
||||
public var note: String?
|
||||
/// 创建时间
|
||||
public var createdAt: Date
|
||||
|
||||
public init(
|
||||
id: String = UUID().uuidString,
|
||||
bookIdentifier: String? = nil,
|
||||
location: RDEPUBLocation,
|
||||
text: String,
|
||||
rangeInfo: String? = nil,
|
||||
style: RDEPUBHighlightStyle = .highlight,
|
||||
color: String = "#F8E16C",
|
||||
note: String? = nil,
|
||||
createdAt: Date = Date()
|
||||
) {
|
||||
self.id = id
|
||||
self.bookIdentifier = bookIdentifier
|
||||
self.location = location
|
||||
self.text = text
|
||||
self.rangeInfo = rangeInfo?.nilIfEmpty
|
||||
self.style = style
|
||||
self.color = color
|
||||
self.note = note?.nilIfEmpty
|
||||
self.createdAt = createdAt
|
||||
}
|
||||
|
||||
/// 是否包含用户备注
|
||||
public var hasNote: Bool {
|
||||
note?.trimmingCharacters(in: .whitespacesAndNewlines).isEmpty == false
|
||||
}
|
||||
|
||||
/// 编码键，用于 Codable 序列化/反序列化
|
||||
private enum CodingKeys: String, CodingKey {
|
||||
case id
|
||||
case bookIdentifier
|
||||
case location
|
||||
case text
|
||||
case rangeInfo
|
||||
case style
|
||||
case color
|
||||
case note
|
||||
case createdAt
|
||||
}
|
||||
|
||||
/// 自定义解码器，兼容旧版本数据格式（缺失字段使用默认值）
|
||||
public init(from decoder: Decoder) throws {
|
||||
let container = try decoder.container(keyedBy: CodingKeys.self)
|
||||
id = try container.decode(String.self, forKey: .id)
|
||||
bookIdentifier = try container.decodeIfPresent(String.self, forKey: .bookIdentifier)
|
||||
location = try container.decode(RDEPUBLocation.self, forKey: .location)
|
||||
text = try container.decode(String.self, forKey: .text)
|
||||
rangeInfo = try container.decodeIfPresent(String.self, forKey: .rangeInfo)?.nilIfEmpty
|
||||
if let rawStyle = try container.decodeIfPresent(String.self, forKey: .style),
|
||||
let decodedStyle = RDEPUBHighlightStyle(rawValue: rawStyle) {
|
||||
style = decodedStyle
|
||||
} else {
|
||||
style = .highlight
|
||||
}
|
||||
color = try container.decodeIfPresent(String.self, forKey: .color) ?? "#F8E16C"
|
||||
note = try container.decodeIfPresent(String.self, forKey: .note)?.nilIfEmpty
|
||||
createdAt = try container.decodeIfPresent(Date.self, forKey: .createdAt) ?? Date()
|
||||
}
|
||||
|
||||
/// 自定义编码器
|
||||
public func encode(to encoder: Encoder) throws {
|
||||
var container = encoder.container(keyedBy: CodingKeys.self)
|
||||
try container.encode(id, forKey: .id)
|
||||
try container.encodeIfPresent(bookIdentifier, forKey: .bookIdentifier)
|
||||
try container.encode(location, forKey: .location)
|
||||
try container.encode(text, forKey: .text)
|
||||
try container.encodeIfPresent(rangeInfo, forKey: .rangeInfo)
|
||||
try container.encode(style, forKey: .style)
|
||||
try container.encode(color, forKey: .color)
|
||||
try container.encodeIfPresent(note, forKey: .note)
|
||||
try container.encode(createdAt, forKey: .createdAt)
|
||||
}
|
||||
|
||||
public var annotation: RDEPUBAnnotation {
|
||||
RDEPUBAnnotation(highlight: self)
|
||||
}
|
||||
}
|
||||
|
||||
/// 书签模型，记录用户标记的阅读位置
|
||||
public struct RDEPUBBookmark: Codable, Equatable {
|
||||
/// 书签唯一标识符
|
||||
public var id: String
|
||||
/// 书籍标识符
|
||||
public var bookIdentifier: String?
|
||||
/// 书签位置
|
||||
public var location: RDEPUBLocation
|
||||
/// 章节标题（用于书签列表展示）
|
||||
public var chapterTitle: String?
|
||||
/// 用户备注
|
||||
public var note: String?
|
||||
/// 创建时间
|
||||
public var createdAt: Date
|
||||
|
||||
public init(
|
||||
id: String = UUID().uuidString,
|
||||
bookIdentifier: String? = nil,
|
||||
location: RDEPUBLocation,
|
||||
chapterTitle: String? = nil,
|
||||
note: String? = nil,
|
||||
createdAt: Date = Date()
|
||||
) {
|
||||
self.id = id
|
||||
self.bookIdentifier = bookIdentifier
|
||||
self.location = location
|
||||
self.chapterTitle = chapterTitle?.nilIfEmpty
|
||||
self.note = note?.nilIfEmpty
|
||||
self.createdAt = createdAt
|
||||
}
|
||||
|
||||
/// 是否包含用户备注
|
||||
public var hasNote: Bool {
|
||||
note?.trimmingCharacters(in: .whitespacesAndNewlines).isEmpty == false
|
||||
}
|
||||
|
||||
public var annotation: RDEPUBAnnotation {
|
||||
RDEPUBAnnotation(bookmark: self)
|
||||
}
|
||||
}
|
||||
|
||||
/// 统一标注模型，对标 WXRead 的 WRBookmark。
|
||||
public struct RDEPUBAnnotation: Codable, Equatable {
|
||||
public var id: String
|
||||
public var bookIdentifier: String?
|
||||
public var kind: RDEPUBAnnotationKind
|
||||
public var location: RDEPUBLocation
|
||||
public var text: String?
|
||||
public var rangeInfo: String?
|
||||
public var color: String?
|
||||
public var chapterTitle: String?
|
||||
public var note: String?
|
||||
public var createdAt: Date
|
||||
|
||||
public init(
|
||||
id: String = UUID().uuidString,
|
||||
bookIdentifier: String? = nil,
|
||||
kind: RDEPUBAnnotationKind,
|
||||
location: RDEPUBLocation,
|
||||
text: String? = nil,
|
||||
rangeInfo: String? = nil,
|
||||
color: String? = nil,
|
||||
chapterTitle: String? = nil,
|
||||
note: String? = nil,
|
||||
createdAt: Date = Date()
|
||||
) {
|
||||
self.id = id
|
||||
self.bookIdentifier = bookIdentifier
|
||||
self.kind = kind
|
||||
self.location = location
|
||||
self.text = text?.nilIfEmpty
|
||||
self.rangeInfo = rangeInfo?.nilIfEmpty
|
||||
self.color = color?.nilIfEmpty
|
||||
self.chapterTitle = chapterTitle?.nilIfEmpty
|
||||
self.note = note?.nilIfEmpty
|
||||
self.createdAt = createdAt
|
||||
}
|
||||
|
||||
public init(highlight: RDEPUBHighlight) {
|
||||
self.init(
|
||||
id: highlight.id,
|
||||
bookIdentifier: highlight.bookIdentifier,
|
||||
kind: highlight.style == .underline ? .underline : .highlight,
|
||||
location: highlight.location,
|
||||
text: highlight.text,
|
||||
rangeInfo: highlight.rangeInfo,
|
||||
color: highlight.color,
|
||||
chapterTitle: nil,
|
||||
note: highlight.note,
|
||||
createdAt: highlight.createdAt
|
||||
)
|
||||
}
|
||||
|
||||
public init(bookmark: RDEPUBBookmark) {
|
||||
self.init(
|
||||
id: bookmark.id,
|
||||
bookIdentifier: bookmark.bookIdentifier,
|
||||
kind: .bookmark,
|
||||
location: bookmark.location,
|
||||
text: nil,
|
||||
rangeInfo: nil,
|
||||
color: nil,
|
||||
chapterTitle: bookmark.chapterTitle,
|
||||
note: bookmark.note,
|
||||
createdAt: bookmark.createdAt
|
||||
)
|
||||
}
|
||||
|
||||
public var bookmark: RDEPUBBookmark? {
|
||||
guard kind == .bookmark else { return nil }
|
||||
return RDEPUBBookmark(
|
||||
id: id,
|
||||
bookIdentifier: bookIdentifier,
|
||||
location: location,
|
||||
chapterTitle: chapterTitle,
|
||||
note: note,
|
||||
createdAt: createdAt
|
||||
)
|
||||
}
|
||||
|
||||
public var highlight: RDEPUBHighlight? {
|
||||
guard kind == .highlight || kind == .underline,
|
||||
let text else {
|
||||
return nil
|
||||
}
|
||||
return RDEPUBHighlight(
|
||||
id: id,
|
||||
bookIdentifier: bookIdentifier,
|
||||
location: location,
|
||||
text: text,
|
||||
rangeInfo: rangeInfo,
|
||||
style: kind == .underline ? .underline : .highlight,
|
||||
color: color ?? "#F8E16C",
|
||||
note: note,
|
||||
createdAt: createdAt
|
||||
)
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
private extension String {
|
||||
var nilIfEmpty: String? {
|
||||
let trimmed = trimmingCharacters(in: .whitespacesAndNewlines)
|
||||
return trimmed.isEmpty ? nil : trimmed
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,229 @@
|
||||
import Foundation
|
||||
|
||||
public enum RDEPUBTextPageBreakReason: String, Codable, Equatable {
|
||||
/// 章节自然结束
|
||||
case chapterEnd
|
||||
/// 达到帧容量限制
|
||||
case frameLimit
|
||||
/// 块级元素边界（如段落、标题）
|
||||
case blockBoundary
|
||||
/// 附件（图片等）边界
|
||||
case attachmentBoundary
|
||||
/// 语义边界（如列表、引用块）
|
||||
case semanticBoundary
|
||||
}
|
||||
|
||||
/// 文本附件类型
|
||||
public enum RDEPUBTextAttachmentKind: String, Codable, Equatable {
|
||||
/// 图片附件
|
||||
case image
|
||||
/// 通用附件
|
||||
case generic
|
||||
}
|
||||
|
||||
/// 文本页元数据，记录分页时的上下文信息
|
||||
/// 用于调试分页问题和优化分页质量
|
||||
public struct RDEPUBTextPageMetadata: Codable, Equatable {
|
||||
/// 分页截断原因
|
||||
public var breakReason: RDEPUBTextPageBreakReason
|
||||
/// 本页覆盖的块级元素范围
|
||||
public var blockRange: NSRange?
|
||||
/// 本页包含的附件范围列表
|
||||
public var attachmentRanges: [NSRange]
|
||||
/// 附件类型列表
|
||||
public var attachmentKinds: [RDEPUBTextAttachmentKind]
|
||||
/// 块级元素类型列表
|
||||
public var blockKinds: [RDEPUBTextBlockKind]
|
||||
/// 语义提示信息
|
||||
public var semanticHints: [RDEPUBTextSemanticHint]
|
||||
/// 附件布局位置信息
|
||||
public var attachmentPlacements: [RDEPUBTextAttachmentPlacement]
|
||||
/// 本页末尾的 fragment ID（用于恢复位置）
|
||||
public var trailingFragmentID: String?
|
||||
/// 诊断信息列表（调试用）
|
||||
public var diagnostics: [String]
|
||||
|
||||
public init(
|
||||
breakReason: RDEPUBTextPageBreakReason,
|
||||
blockRange: NSRange? = nil,
|
||||
attachmentRanges: [NSRange] = [],
|
||||
attachmentKinds: [RDEPUBTextAttachmentKind] = [],
|
||||
blockKinds: [RDEPUBTextBlockKind] = [],
|
||||
semanticHints: [RDEPUBTextSemanticHint] = [],
|
||||
attachmentPlacements: [RDEPUBTextAttachmentPlacement] = [],
|
||||
trailingFragmentID: String? = nil,
|
||||
diagnostics: [String] = []
|
||||
) {
|
||||
self.breakReason = breakReason
|
||||
self.blockRange = blockRange
|
||||
self.attachmentRanges = attachmentRanges
|
||||
self.attachmentKinds = attachmentKinds
|
||||
self.blockKinds = blockKinds
|
||||
self.semanticHints = semanticHints
|
||||
self.attachmentPlacements = attachmentPlacements
|
||||
self.trailingFragmentID = trailingFragmentID
|
||||
self.diagnostics = diagnostics
|
||||
}
|
||||
}
|
||||
|
||||
/// 高亮模型，表示用户在阅读中标记的文本片段
|
||||
public struct EPUBChapterInfo: Codable, Equatable {
|
||||
/// 对应的 spine 索引
|
||||
public var spineIndex: Int
|
||||
/// 章节标题
|
||||
public var title: String
|
||||
/// 该章节的总页数
|
||||
public var pageCount: Int
|
||||
|
||||
public init(spineIndex: Int, title: String, pageCount: Int) {
|
||||
self.spineIndex = spineIndex
|
||||
self.title = title
|
||||
self.pageCount = pageCount
|
||||
}
|
||||
}
|
||||
|
||||
/// 页面模型，描述单页的完整信息
|
||||
/// 由 RDEPUBReadingSession 根据分页结果构建，是翻页容器层的数据单元
|
||||
public struct EPUBPage: Codable, Equatable {
|
||||
/// 对应的 spine 索引
|
||||
public var spineIndex: Int
|
||||
/// 章节索引（从 0 开始的章节序号）
|
||||
public var chapterIndex: Int
|
||||
/// 页在章节中的索引（从 0 开始）
|
||||
public var pageIndexInChapter: Int
|
||||
/// 该章节的总页数
|
||||
public var totalPagesInChapter: Int
|
||||
/// 章节标题
|
||||
public var chapterTitle: String
|
||||
/// 固定版式 Spread 数据（仅 fixed layout 书籍有值）
|
||||
public var fixedSpread: EPUBFixedSpread?
|
||||
|
||||
public init(
|
||||
spineIndex: Int,
|
||||
chapterIndex: Int,
|
||||
pageIndexInChapter: Int,
|
||||
totalPagesInChapter: Int,
|
||||
chapterTitle: String,
|
||||
fixedSpread: EPUBFixedSpread?
|
||||
) {
|
||||
self.spineIndex = spineIndex
|
||||
self.chapterIndex = chapterIndex
|
||||
self.pageIndexInChapter = pageIndexInChapter
|
||||
self.totalPagesInChapter = totalPagesInChapter
|
||||
self.chapterTitle = chapterTitle
|
||||
self.fixedSpread = fixedSpread
|
||||
}
|
||||
}
|
||||
|
||||
/// 固定版式 Spread 中的单个资源
|
||||
public struct EPUBFixedSpreadResource: Codable, Equatable {
|
||||
/// 对应的 spine 索引
|
||||
public var spineIndex: Int
|
||||
/// 资源路径
|
||||
public var href: String
|
||||
/// 资源标题
|
||||
public var title: String
|
||||
/// 在 spread 中的位置偏好
|
||||
public var pageSpread: RDEPUBPageSpread?
|
||||
|
||||
public init(spineIndex: Int, href: String, title: String, pageSpread: RDEPUBPageSpread? = nil) {
|
||||
self.spineIndex = spineIndex
|
||||
self.href = href
|
||||
self.title = title
|
||||
self.pageSpread = pageSpread
|
||||
}
|
||||
}
|
||||
|
||||
/// 固定版式 Spread（双页展开）模型
|
||||
/// 将 1-2 个 spine 资源组合为一个显示单元
|
||||
public struct EPUBFixedSpread: Codable, Equatable {
|
||||
/// 该 spread 包含的资源列表（通常 1-2 个）
|
||||
public var resources: [EPUBFixedSpreadResource]
|
||||
|
||||
public init(resources: [EPUBFixedSpreadResource]) {
|
||||
self.resources = resources
|
||||
}
|
||||
|
||||
/// 主资源（列表中的第一个），用于标识和定位
|
||||
public var primaryResource: EPUBFixedSpreadResource {
|
||||
resources.first ?? EPUBFixedSpreadResource(spineIndex: 0, href: "", title: "")
|
||||
}
|
||||
|
||||
/// 判断指定 href 的资源是否属于此 spread
|
||||
/// - Parameters:
|
||||
/// - normalizedHref: 标准化后的 href
|
||||
/// - normalizer: href 标准化函数
|
||||
/// - Returns: 是否包含该资源
|
||||
public func contains(normalizedHref: String, normalizer: (String) -> String?) -> Bool {
|
||||
resources.contains { resource in
|
||||
normalizer(resource.href) == normalizedHref
|
||||
}
|
||||
}
|
||||
|
||||
/// 根据 spine 列表和 spread 设置生成 Spread 数组
|
||||
/// 根据 pageSpread 属性（left/right/center）决定资源配对
|
||||
/// - Parameters:
|
||||
/// - spine: spine 项列表
|
||||
/// - spreadEnabled: 是否启用 spread 模式
|
||||
/// - Returns: spread 数组
|
||||
public static func makeSpreads(spine: [RDEPUBSpineItem], spreadEnabled: Bool) -> [EPUBFixedSpread] {
|
||||
let resources = spine.enumerated().map { index, item in
|
||||
EPUBFixedSpreadResource(
|
||||
spineIndex: index,
|
||||
href: item.href,
|
||||
title: item.title,
|
||||
pageSpread: item.pageSpread
|
||||
)
|
||||
}
|
||||
|
||||
guard spreadEnabled, resources.count > 1 else {
|
||||
return resources.map { EPUBFixedSpread(resources: [$0]) }
|
||||
}
|
||||
|
||||
var spreads: [EPUBFixedSpread] = []
|
||||
var cursor = 0
|
||||
|
||||
while cursor < resources.count {
|
||||
let current = resources[cursor]
|
||||
|
||||
guard cursor + 1 < resources.count else {
|
||||
spreads.append(EPUBFixedSpread(resources: [current]))
|
||||
break
|
||||
}
|
||||
|
||||
let next = resources[cursor + 1]
|
||||
if shouldPair(current: current, next: next) {
|
||||
spreads.append(EPUBFixedSpread(resources: [current, next]))
|
||||
cursor += 2
|
||||
} else {
|
||||
spreads.append(EPUBFixedSpread(resources: [current]))
|
||||
cursor += 1
|
||||
}
|
||||
}
|
||||
|
||||
return spreads
|
||||
}
|
||||
|
||||
/// 便捷方法：从 parser 构建 spread
|
||||
public static func makeSpreads(parser: RDEPUBParser, spreadEnabled: Bool) -> [EPUBFixedSpread] {
|
||||
makeSpreads(spine: parser.spine, spreadEnabled: spreadEnabled)
|
||||
}
|
||||
|
||||
/// 判断两个资源是否应该配对为一个 spread
|
||||
/// center 类型不参与配对，left+right 或 right+left 配对
|
||||
private static func shouldPair(current: EPUBFixedSpreadResource, next: EPUBFixedSpreadResource) -> Bool {
|
||||
if current.pageSpread == .center || next.pageSpread == .center {
|
||||
return false
|
||||
}
|
||||
|
||||
switch (current.pageSpread, next.pageSpread) {
|
||||
case (.left, .right), (.right, .left):
|
||||
return true
|
||||
case (.left, .left), (.right, .right):
|
||||
return false
|
||||
default:
|
||||
return true
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
@@ -0,0 +1,135 @@
|
||||
import Foundation
|
||||
|
||||
public struct RDEPUBLocation: Codable, Equatable {
|
||||
/// 书籍唯一标识符，用于隔离不同书的阅读进度
|
||||
public var bookIdentifier: String?
|
||||
/// OPF 相对路径，对应 spine 中的资源文件
|
||||
public var href: String
|
||||
/// 视口起始位置在章节中的相对进度 [0, 1]
|
||||
public var progression: Double
|
||||
/// 视口末尾位置在章节中的相对进度 [0, 1]（可选）
|
||||
public var lastProgression: Double?
|
||||
/// 锚点标识符（如 #section1），用于精确跳转
|
||||
public var fragment: String?
|
||||
/// 文本范围锚点（用于文本 EPUB 的高亮定位）
|
||||
public var rangeAnchor: RDEPUBTextRangeAnchor?
|
||||
|
||||
public init(
|
||||
bookIdentifier: String? = nil,
|
||||
href: String,
|
||||
progression: Double,
|
||||
lastProgression: Double? = nil,
|
||||
fragment: String? = nil,
|
||||
rangeAnchor: RDEPUBTextRangeAnchor? = nil
|
||||
) {
|
||||
self.bookIdentifier = bookIdentifier
|
||||
self.href = href
|
||||
self.progression = Self.clamp(progression)
|
||||
self.lastProgression = lastProgression.map(Self.clamp)
|
||||
self.fragment = fragment?.nilIfEmpty
|
||||
self.rangeAnchor = rangeAnchor
|
||||
}
|
||||
|
||||
/// 导航用的中间进度值，取 progression 和 lastProgression 的中点
|
||||
/// 用于在字号/横竖屏变化后估算最接近的页号
|
||||
public var navigationProgression: Double {
|
||||
let end = lastProgression ?? progression
|
||||
if end.isNaN || end.isInfinite {
|
||||
return progression
|
||||
}
|
||||
return Self.clamp((progression + end) / 2.0)
|
||||
}
|
||||
|
||||
/// 将进度值限制在 [0, 1] 范围内，防止越界
|
||||
private static func clamp(_ value: Double) -> Double {
|
||||
guard value.isFinite else { return 0 }
|
||||
return min(1, max(0, value))
|
||||
}
|
||||
}
|
||||
|
||||
/// 视口中的单个资源信息，表示当前屏幕可见区域覆盖的某个 spine 资源
|
||||
public struct RDEPUBViewportResource: Codable, Equatable {
|
||||
/// 资源路径（相对于 OPF 目录）
|
||||
public var href: String
|
||||
/// 对应的 spine 索引
|
||||
public var spineIndex: Int
|
||||
/// 该资源在视口中的起始进度 [0, 1]
|
||||
public var progression: Double
|
||||
/// 该资源在视口中的结束进度 [0, 1]
|
||||
public var lastProgression: Double?
|
||||
/// 锚点标识符
|
||||
public var fragment: String?
|
||||
|
||||
public init(
|
||||
href: String,
|
||||
spineIndex: Int,
|
||||
progression: Double,
|
||||
lastProgression: Double? = nil,
|
||||
fragment: String? = nil
|
||||
) {
|
||||
self.href = href
|
||||
self.spineIndex = spineIndex
|
||||
self.progression = progression
|
||||
self.lastProgression = lastProgression
|
||||
self.fragment = fragment
|
||||
}
|
||||
}
|
||||
|
||||
/// 视口模型，描述当前屏幕可见区域的完整状态
|
||||
/// 可能跨越多个 spine 资源（如分栏布局时）
|
||||
public struct RDEPUBViewport: Codable, Equatable {
|
||||
/// 当前视口覆盖的资源列表（可能有多个，如分栏或跨页场景）
|
||||
public var resources: [RDEPUBViewportResource]
|
||||
/// 当前可见的页码
|
||||
public var visiblePageNumber: Int
|
||||
/// 当前章节索引
|
||||
public var chapterIndex: Int?
|
||||
/// 是否为固定版式内容
|
||||
public var isFixedLayout: Bool
|
||||
|
||||
public init(
|
||||
resources: [RDEPUBViewportResource],
|
||||
visiblePageNumber: Int,
|
||||
chapterIndex: Int? = nil,
|
||||
isFixedLayout: Bool
|
||||
) {
|
||||
self.resources = resources
|
||||
self.visiblePageNumber = visiblePageNumber
|
||||
self.chapterIndex = chapterIndex
|
||||
self.isFixedLayout = isFixedLayout
|
||||
}
|
||||
}
|
||||
|
||||
/// 阅读上下文，聚合了位置、视口和页码等完整阅读状态
|
||||
/// 由 RDEPUBReadingSession 维护，是翻页容器层获取当前阅读状态的主要数据源
|
||||
public struct RDEPUBReadingContext: Codable, Equatable {
|
||||
/// 当前阅读位置（href + progression）
|
||||
public var location: RDEPUBLocation
|
||||
/// 当前视口状态
|
||||
public var viewport: RDEPUBViewport
|
||||
/// 当前扁平页码（跨章节累计）
|
||||
public var pageNumber: Int
|
||||
/// 当前章节索引
|
||||
public var chapterIndex: Int?
|
||||
|
||||
public init(
|
||||
location: RDEPUBLocation,
|
||||
viewport: RDEPUBViewport,
|
||||
pageNumber: Int,
|
||||
chapterIndex: Int? = nil
|
||||
) {
|
||||
self.location = location
|
||||
self.viewport = viewport
|
||||
self.pageNumber = pageNumber
|
||||
self.chapterIndex = chapterIndex
|
||||
}
|
||||
}
|
||||
|
||||
/// 文本选择模型，由 JS 桥接 ssReaderSelectionChanged 消息触发创建
|
||||
|
||||
private extension String {
|
||||
var nilIfEmpty: String? {
|
||||
let trimmed = trimmingCharacters(in: .whitespacesAndNewlines)
|
||||
return trimmed.isEmpty ? nil : trimmed
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user