27 lines
1.0 KiB
Swift
27 lines
1.0 KiB
Swift
import CoreText
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import UIKit
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#if canImport(DTCoreText)
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import DTCoreText
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#endif
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/// CoreText 分页引擎 Facade：将富文本按页面尺寸拆分为多帧（每帧对应一页）。
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///
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/// 内部委托给三个组件：
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/// - RDEPUBCoreTextPageFrameFactory — 帧创建、属性查询、诊断
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/// - RDEPUBPageBreakPolicy — 分页规则（语义保护、keepWithNext）
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/// - RDEPUBChapterPageCounter — 顶层分页循环编排
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struct RDEPUBTextLayouter {
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private let counter: RDEPUBChapterPageCounter
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init(attributedString: NSAttributedString, pageSize: CGSize, config: RDEPUBTextLayoutConfig = .default) {
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let factory = RDEPUBCoreTextPageFrameFactory(attributedString: attributedString, pageSize: pageSize, config: config)
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self.counter = RDEPUBChapterPageCounter(factory: factory)
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}
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/// 执行分页，返回布局帧列表（每帧对应一页）。
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func layoutFrames(fragmentOffsets: [String: Int] = [:]) -> [RDEPUBTextLayoutFrame] {
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counter.layoutFrames(fragmentOffsets: fragmentOffsets)
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}
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}
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