Epub阅读器0.0.1

2026-05-21 19:40:51 +08:00
commit daa36d8fe7
559 changed files with 106266 additions and 0 deletions
@@ -0,0 +1,93 @@
+import UIKit
+
+extension RDReaderController {
+    func currentEPUBTextPageSize() -> CGSize {
+        let pageWidth: CGFloat
+        if readerView.pagesPerScreen > 1 {
+            pageWidth = view.frame.width / CGFloat(readerView.pagesPerScreen) - 16 * 2
+        } else {
+            pageWidth = view.frame.width - 16 * 2
+        }
+        return CGSize(width: max(pageWidth, 1), height: max(view.frame.height - 40 * 2, 1))
+    }
+
+    func loadEPUBTextBook(
+        parser: RDEPUBParser,
+        publication: RDEPUBPublication,
+        restoreLocation: RDEPUBLocation?
+    ) {
+        let pageSize = currentEPUBTextPageSize()
+        let font = UIFont.systemFont(ofSize: RDReaderManager.shared.fontValue.currentType)
+        let lineSpacing = RDReaderManager.shared.lineSpaceType.currentType.mulitiple * 15
+
+        DispatchQueue.global(qos: .userInitiated).async { [weak self] in
+            let textBook = LegacyRDEPUBTextBookBuilder.build(
+                parser: parser,
+                publication: publication,
+                pageSize: pageSize,
+                font: font,
+                lineSpacing: lineSpacing
+            )
+            DispatchQueue.main.async {
+                self?.applyEPUBTextBook(textBook, publication: publication, restoreLocation: restoreLocation)
+            }
+        }
+    }
+
+    func applyEPUBTextBook(
+        _ textBook: LegacyRDEPUBTextBook,
+        publication: RDEPUBPublication,
+        restoreLocation: RDEPUBLocation?
+    ) {
+        epubTextBook = textBook
+        epubTOCItems = flattenedTOCItems(from: publication.tableOfContents, textBook: textBook)
+        print("[EPUB] Text book ready chapters=\(textBook.chapters.count) pages=\(textBook.pages.count) toc=\(epubTOCItems.count)")
+        let resolvedRestorePage = restoreLocation.flatMap {
+            textBook.pageNumber(
+                for: $0,
+                resolver: epubResolver ?? publicationFallbackResolver(),
+                bookIdentifier: currentEPUBBookIdentifier
+            )
+        }
+        storeEPUBPaginationValidation(
+            mode: "textReflowable",
+            stage: "final",
+            pageCount: textBook.pages.count,
+            chapterCount: textBook.chapters.count,
+            tocCount: epubTOCItems.count,
+            restoreLocation: restoreLocation,
+            resolvedRestorePage: resolvedRestorePage
+        )
+        isReaderContentReady = true
+        hideLoading()
+        readerView.reloadData()
+        restoreEPUBLocation(restoreLocation)
+        if restoreLocation == nil {
+            epubSession?.transition(to: .idle)
+        }
+    }
+
+    func flattenedTOCItems(
+        from items: [EPUBTableOfContentsItem],
+        depth: Int = 0,
+        textBook: LegacyRDEPUBTextBook? = nil
+    ) -> [EPUBTOCDisplayItem] {
+        var result: [EPUBTOCDisplayItem] = []
+        for item in items {
+            let pageNumber = textBook.flatMap { book in
+                book.pageNumber(
+                    for: RDEPUBLocation(bookIdentifier: currentEPUBBookIdentifier, href: item.href, progression: 0),
+                    resolver: epubResolver ?? publicationFallbackResolver(),
+                    bookIdentifier: currentEPUBBookIdentifier
+                )
+            }
+            result.append(EPUBTOCDisplayItem(title: item.title, href: item.href, depth: depth, pageNumber: pageNumber))
+            result.append(contentsOf: flattenedTOCItems(from: item.children, depth: depth + 1, textBook: textBook))
+        }
+        return result
+    }
+
+    func publicationFallbackResolver() -> RDEPUBResourceResolver {
+        epubPublication?.resourceResolver ?? RDEPUBResourceResolver(parser: epubParser ?? RDEPUBParser())
+    }
+}