1422461224
SDK 化收尾： - 新增 RDPDFReaderView 本地 pod（阅读容器、成品控制器、划线/注释、画笔、 目录/设置面板、主题与持久化契约），Demo 精简为 PDFKit 页面提供者 + 持久化宿主 - Podfile/工程接入 RDPDFReaderView 与 SnapKit，示例书改用 PDF 阅读器示例文件 手机横屏单页竖滑修复： - cell 高度改为宽度适配后的纸张高度（sizeForItemAt + 宿主按页提供纵横比）， 纵向超出一屏的内容由外层 collectionView 连续滚动承接，不再被裁掉 - 页面内部不再开启同向嵌套的兜底竖向拖动，修复外层滚动被吞、无法滚到下一页 - 修复 applyContentSize 先评估拖动开关后写 contentSize 的顺序缺陷 - 页码按视口中心命中 cell 计算，补 didEndDragging 兜底；旋转重锚点与 transitionToPage 改用真实布局位置 - 横竖屏同为竖滑时也重建 cell 并刷新全部可见页的适配配置 - 横屏单页点击不再跳页，只显隐工具栏；翻页交给连续竖滑 Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
67 lines
3.2 KiB
Swift
67 lines
3.2 KiB
Swift
import UIKit
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extension RDPDFReaderView: UICollectionViewDataSource, UICollectionViewDelegateFlowLayout {
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public func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
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pageCount()
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}
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public func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
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let view = dataSource?.pageContentView(readerView: self, pageNum: indexPath.item) ?? UIView()
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view.tag = indexPath.item
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configureSpreadAlignment(for: view, page: indexPath.item)
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configureInteraction(for: view)
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if let cell = view.superview?.superview as? RDPDFReaderContentCell { return cell }
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let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "fallback", for: indexPath) as! RDPDFReaderContentCell
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cell.hostedView = view
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return cell
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}
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public func collectionView(
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_ collectionView: UICollectionView,
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layout collectionViewLayout: UICollectionViewLayout,
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sizeForItemAt indexPath: IndexPath
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) -> CGSize {
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// 手机横屏竖滑：cell 高度=宽度适配后的纸张高度，超出一屏的内容由
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// collectionView 自身的连续滚动承接；页面未加载时先按一屏高占位。
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if usesWidthFitVerticalScroll,
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let height = verticalScrollWidthFitPageHeightProvider?(indexPath.item, bounds.width),
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height > 0 {
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return CGSize(width: bounds.width, height: height)
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}
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return usesLandscapeSpread
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? CGSize(width: bounds.width / 2, height: bounds.height)
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: bounds.size
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}
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public func scrollViewDidEndDecelerating(_ scrollView: UIScrollView) {
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updateCurrentPageAfterScroll(scrollView)
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}
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public func scrollViewDidEndDragging(_ scrollView: UIScrollView, willDecelerate decelerate: Bool) {
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// 竖滑是连续滚动（isPagingEnabled = false），轻推后直接停下不会触发
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// 减速回调；此处兜底，否则页码停留在旧值。
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if !decelerate { updateCurrentPageAfterScroll(scrollView) }
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}
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private func updateCurrentPageAfterScroll(_ scrollView: UIScrollView) {
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guard currentDisplayType != .pageCurl else { return }
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if currentDisplayType == .verticalScroll {
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// 宽度适配下各 cell 高度不同，页码取视口中心命中的 cell。
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// 顶部/底部回弹时中心点会越出内容范围，钳制回内容内再取 cell。
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let centerY = scrollView.contentOffset.y + scrollView.bounds.height / 2
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let center = CGPoint(
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x: scrollView.bounds.width / 2,
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y: min(max(0, centerY), max(0, collectionView.contentSize.height - 1))
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)
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if let indexPath = collectionView.indexPathForItem(at: center) {
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currentPage = indexPath.item
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} else if let first = collectionView.indexPathsForVisibleItems.min(by: { $0.item < $1.item }) {
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currentPage = first.item
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}
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return
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}
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let value = scrollView.contentOffset.x / max(bounds.width, 1)
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currentPage = Int(value.rounded()) * (usesLandscapeSpread ? 2 : 1)
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}
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}
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