はじめてのPDFKit.pdf

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1. ͸͡ΊͯͷPDFKit Ճ౻঵ਅ
2. 2 גࣜձࣾZOZO Ճ౻ ঵ਅ • X: @shoma10170806 • 2023೥4݄: ZOZOೖࣾʢ3೥໨ʣ • γϣοϓελοϑͷൢചαϙʔτπʔϧ
 ʮFAANSʯͷiOSΞϓϦΛ։ൃ • ത࢜ޙظ՝ఔʹࡏֶதɹը૾ॲཧͳͲͷݚڀʹैࣄ
3. 3 FAANSͷ৽ػೳ ɾPDFͷදࣔػೳ - ໾ཱͭ৘ใͷදࣔ - ֦େɾॖখ - ϖʔδ൪߸ͷදࣔ
4. 4 FAANSͷ৽ػೳ ɾPDFͷදࣔػೳ - ໾ཱͭ৘ใͷදࣔ - ֦େɾॖখ - ϖʔδ൪߸ͷදࣔ
5. 5 FAANSͷ৽ػೳ ɾPDFͷදࣔػೳ - ໾ཱͭ৘ใͷදࣔ - ֦େɾॖখ - ϖʔδ൪߸ͷදࣔ
6. 6 FAANSͷ৽ػೳ PDFදࣔ: PDFKit ɾPDFͷදࣔػೳ - ໾ཱͭ৘ใͷදࣔ - ֦େɾॖখ - ϖʔδ൪߸ͷදࣔ
7. 7 Section1: PDFKitΛ༻͍ͨදࣔ Section2: ϖʔδ൪߸ͷߋ৽
8. 8 Section1: PDFKitΛ༻͍ͨදࣔ Section2: ϖʔδ൪߸ͷߋ৽
9. 9 PDFDocumentͷಡΈࠐΈ Section1: PDFKitΛ༻͍ͨදࣔ extension URLSession { func data(with url: URL) async throws -> (Data, URLResponse) { try await data(from: url) } } private func loadPdfDocument() async { var pdfDocument: PDFDocument? do { let (data, _) = try await URLSession.shared.data(with: pdfUrl) if let document = PDFDocument(data: data), document.pageCount > 0 { self.pdfDocument = document } } catch { // ಡΈࠐΈΤϥʔͷ৔߹ } }
10. private func loadPdfDocument() async { var pdfDocument: PDFDocument? do { let (data, _) = try await URLSession.shared.data(with: pdfUrl) if let document = PDFDocument(data: data), document.pageCount > 0 { self.pdfDocument = document } } catch { // ಡΈࠐΈΤϥʔͷ৔߹ } } 10 PDFDocumentͷಡΈࠐΈ Section1: PDFKitΛ༻͍ͨදࣔ pdfUrl: https:// xxx.pdf extension URLSession { func data(with url: URL) async throws -> (Data, URLResponse) { try await data(from: url) } }
11. private func loadPdfDocument() async { var pdfDocument: PDFDocument? do { let (data, _) = try await URLSession.shared.data(with: pdfUrl) if let document = PDFDocument(data: data), document.pageCount > 0 { self.pdfDocument = document } } catch { // ಡΈࠐΈΤϥʔͷ৔߹ } } extension URLSession { func data(with url: URL) async throws -> (Data, URLResponse) { try await data(from: url) } } 11 PDFDocumentͷಡΈࠐΈ Section1: PDFKitΛ༻͍ͨදࣔ ɾdata͔ΒPDFDocumentΛੜ੒ ɾϖʔδ਺: 1Ҏ্
12. 12 PDFͷදࣔ let pdfView = PDFView() pdfView.document = document pdfView.displayMode = .singlePageContinuous pdfView.displayDirection = .vertical pdfView.autoScales = true pdfView.minScaleFactor = pdfView.scaleFactor ① PDFViewʹPDFDocumentͷૠೖ Section1: PDFKitΛ༻͍ͨදࣔ
13. 13 PDFͷදࣔ ① PDFViewʹPDFDocumentͷૠೖ ② දࣔํ๏ͷઃఆ let pdfView = PDFView() pdfView.document = document pdfView.displayMode = .singlePageContinuous pdfView.displayDirection = .vertical pdfView.autoScales = true pdfView.minScaleFactor = pdfView.scaleFactor Section1: PDFKitΛ༻͍ͨදࣔ
14. let pdfView = PDFView() pdfView.document = document pdfView.displayMode = .singlePageContinuous pdfView.displayDirection = .vertical pdfView.autoScales = true pdfView.minScaleFactor = pdfView.scaleFactor 14 PDFͷදࣔ ① PDFViewʹPDFDocumentͷૠೖ ② දࣔํ๏ͷઃఆ ③ PDFͷαΠζΛࣗಈͰௐ੔ Section1: PDFKitΛ༻͍ͨදࣔ
15. let pdfView = PDFView() pdfView.document = document pdfView.displayMode = .singlePageContinuous pdfView.displayDirection = .vertical pdfView.autoScales = true pdfView.minScaleFactor = pdfView.scaleFactor 15 PDFͷදࣔ ① PDFViewʹPDFDocumentͷૠೖ ② දࣔํ๏ͷઃఆ ④ ॖখαΠζͷ࠷খ஋ͷܾఆ ③ PDFͷαΠζΛࣗಈͰௐ੔ Section1: PDFKitΛ༻͍ͨදࣔ
16. let pdfView = PDFView() pdfView.document = document pdfView.displayMode = .singlePageContinuous pdfView.displayDirection = .vertical pdfView.autoScales = true pdfView.minScaleFactor = pdfView.scaleFactor 16 PDFͷදࣔ ① PDFViewʹPDFDocumentͷૠೖ ② දࣔํ๏ͷઃఆ ④ ॖখαΠζͷ࠷খ஋ͷܾఆ ③ PDFͷαΠζΛࣗಈͰௐ੔ Section1: PDFKitΛ༻͍ͨදࣔ
17. 17 ॳظঢ়ଶʹ͓͚ΔPDFදࣔҐஔͷζϨ ॳظදࣔʢζϨʣ ਖ਼ৗ ζϨ Section1: PDFKitΛ༻͍ͨදࣔ
18. 18 ζϨ ɾζϨͷݪҼ - PDFͷαΠζ - தԝἧ͑ Section1: PDFKitΛ༻͍ͨදࣔ ॳظঢ়ଶʹ͓͚ΔPDFදࣔҐஔͷζϨ ਖ਼ৗ ॳظදࣔʢζϨʣ
19. 19 ζϨ ɾζϨͷݪҼ - PDFͷαΠζ - தԝἧ͑ Section1: PDFKitΛ༻͍ͨදࣔ ॳظঢ়ଶʹ͓͚ΔPDFදࣔҐஔͷζϨ ॳظঢ়ଶ: PDFࠨ্͕ը໘಺ ਖ਼ৗ ॳظදࣔʢζϨʣ
20. 20 ζϨͷվળํ๏ if let firstPage = document.page(at: 0) { pdfView.go( to: firstPage.bounds(for: pdfView.displayBox), on: firstPage ) } Section1: PDFKitΛ༻͍ͨදࣔ
21. 21 if let firstPage = document.page(at: 0) { pdfView.go( to: firstPage.bounds(for: pdfView.displayBox), on: firstPage ) } ① PDFDocumentͷ1ϖʔδΛऔಘ ② 1ϖʔδ໨ͷࠨ্͕දࣔ͞ΕΔΑ͏ʹҠಈ Section1: PDFKitΛ༻͍ͨදࣔ ζϨͷվળํ๏
22. 22 Section1: PDFKitΛ༻͍ͨදࣔ Section2: ϖʔδ൪߸ͷߋ৽
23. 23 ϖʔδ൪߸ͷදࣔ ࠨଆ: ݱࡏͷϖʔδ൪߸ ӈଆ: ૯ϖʔδ਺
24. 24 ϖʔδ൪߸ͷऔಘํ๏ let document: PDFDocument? let pdfView = PDFView() let totalPage = document.pageCount NotificationCenter.default .addObserver(forName: .PDFViewPageChanged, object: pdfView, queue: .main) { _ in Task { @MainActor in let pageNumber = pdfView.currentPage?.pageRef?.pageNumber } } ࠨଆ: ݱࡏͷϖʔδ൪߸ ӈଆ: ૯ϖʔδ਺ ① ૯ϖʔδ਺ͷऔಘ
25. 25 ϖʔδ൪߸ͷऔಘํ๏ let document: PDFDocument? let pdfView = PDFView() let totalPage = document.pageCount NotificationCenter.default .addObserver(forName: .PDFViewPageChanged, object: pdfView, queue: .main) { _ in Task { @MainActor in let pageNumber = pdfView.currentPage?.pageRef?.pageNumber } } ࠨଆ: ݱࡏͷϖʔδ൪߸ ӈଆ: ૯ϖʔδ਺ ① ૯ϖʔδ਺ͷऔಘ ② ϖʔδͷมߋ؂ࢹɾ൪߸औಘ
26. 26 ϖʔδ൪߸ͷऔಘํ๏ let document: PDFDocument? let pdfView = PDFView() let totalPage = document.pageCount NotificationCenter.default .addObserver(forName: .PDFViewPageChanged, object: pdfView, queue: .main) { _ in Task { @MainActor in let pageNumber = pdfView.currentPage?.pageRef?.pageNumber } } ࠨଆ: ݱࡏͷϖʔδ൪߸ ӈଆ: ૯ϖʔδ਺ ① ૯ϖʔδ਺ͷऔಘ ② ϖʔδͷมߋ؂ࢹɾ൪߸औಘ
27. 27 ϖʔδ൪߸औಘͷ໰୊఺ ɾԣ௕ͷPDF - ը໘্ʹෳ਺ຕͷPDF - ϖʔδ൪߸: 2͔Βදࣔ͞ΕΔ ॳظঢ়ଶ: ϖʔδ൪߸Λ1ʹ͢Δ ※ Πϝʔδը૾
28. 28 ॳظঢ়ଶͷ൑ఆํ๏ ɾoffset͕0: ϖʔδ൪߸1 PDFView: offset͸औಘͰ͖ͳ͍
29. 29 ॳظঢ়ଶͷ൑ఆํ๏ UIScrollView extension PDFView { func scrollView() -> UIScrollView? { return self.subviews.compactMap { $0 as? UIScrollView }.first } } ɾoffset͕0: ϖʔδ൪߸1 PDFView: offset͸औಘͰ͖ͳ͍ ϫʔΫΞϥ΢ϯυ
30. 30 ॳظঢ়ଶͷ൑ఆํ๏ if let scrollView = pdfView.scrollView() { scrollView.publisher(for: \.contentOffset) .sink { [weak pdfView] contentOffset in Task { @MainActor in guard let pdfView = pdfView else { return } if contentOffset.y <= 0.0 { currentPage = 1 } else if let pageNumber = pdfView.currentPage?.pageRef?.pageNumber, pageNumber != currentPage { NotificationCenter.default.post( name: .PDFViewPageChanged, object: pdfView ) } } } } ① UIScrollViewͷݕग़ ② offSetͷpublisherΛൃߦ
31. if let scrollView = pdfView.scrollView() { scrollView.publisher(for: \.contentOffset) .sink { [weak pdfView] contentOffset in Task { @MainActor in guard let pdfView = pdfView else { return } if contentOffset.y <= 0.0 { currentPage = 1 } else if let pageNumber = pdfView.currentPage?.pageRef?.pageNumber, pageNumber != currentPage { NotificationCenter.default.post( name: .PDFViewPageChanged, object: pdfView ) } } } } 31 ॳظঢ়ଶͷ൑ఆํ๏ ③ ϖʔδ൪߸ͷߋ৽ ① UIScrollViewͷݕग़ ② offSetͷpublisherΛൃߦ
32. if let scrollView = pdfView.scrollView() { scrollView.publisher(for: \.contentOffset) .sink { [weak pdfView] contentOffset in Task { @MainActor in guard let pdfView = pdfView else { return } if contentOffset.y <= 0.0 { currentPage = 1 } else if let pageNumber = pdfView.currentPage?.pageRef?.pageNumber, pageNumber != currentPage { NotificationCenter.default.post( name: .PDFViewPageChanged, object: pdfView ) } } } } 32 ॳظঢ়ଶͷ൑ఆํ๏ ③ ϖʔδ൪߸ͷߋ৽ ① UIScrollViewͷݕग़ ② offSetͷpublisherΛൃߦ
33. if let scrollView = pdfView.scrollView() { scrollView.publisher(for: \.contentOffset) .sink { [weak pdfView] contentOffset in Task { @MainActor in guard let pdfView = pdfView else { return } if contentOffset.y <= 0.0 { currentPage = 1 } else if let pageNumber = pdfView.currentPage?.pageRef?.pageNumber, pageNumber != currentPage { NotificationCenter.default.post( name: .PDFViewPageChanged, object: pdfView ) } } } } 33 ॳظঢ়ଶͷ൑ఆํ๏ ③ ϖʔδ൪߸ͷߋ৽ ① UIScrollViewͷݕग़ ② offSetͷpublisherΛൃߦ
34. 34 ϖʔδ൪߸ͷදࣔ݁Ռ ※දࣔ͞Ε͍ͯΔPDF͸ΠϝʔδͰ͢
35. 35 ·ͱΊ ɾPDFKitͷ࢖͍ํ ɹ- PDFKitΛ༻͍ͨPDFදࣔ ɹ- ϖʔδ൪߸ͷߋ৽