NCViewerPDF.swift 4.8 KB

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  1. //
  2. // NCViewerPDF.swift
  3. // Nextcloud
  4. //
  5. // Created by Marino Faggiana on 06/02/2020.
  6. // Copyright © 2020 Marino Faggiana. All rights reserved.
  7. //
  8. // Author Marino Faggiana <marino.faggiana@nextcloud.com>
  9. //
  10. // This program is free software: you can redistribute it and/or modify
  11. // it under the terms of the GNU General Public License as published by
  12. // the Free Software Foundation, either version 3 of the License, or
  13. // (at your option) any later version.
  14. //
  15. // This program is distributed in the hope that it will be useful,
  16. // but WITHOUT ANY WARRANTY; without even the implied warranty of
  17. // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  18. // GNU General Public License for more details.
  19. //
  20. // You should have received a copy of the GNU General Public License
  21. // along with this program. If not, see <http://www.gnu.org/licenses/>.
  22. //
  23. import Foundation
  24. import PDFKit
  25. @available(iOS 11, *)
  26. @objc class NCViewerPDF: PDFView {
  27. private let appDelegate = UIApplication.shared.delegate as! AppDelegate
  28. private var thumbnailViewHeight: CGFloat = 48
  29. private var pdfThumbnailView: PDFThumbnailView?
  30. required init?(coder: NSCoder) {
  31. super.init(coder: coder)
  32. }
  33. override init(frame: CGRect) {
  34. let height = frame.height - thumbnailViewHeight
  35. super.init(frame: CGRect(x: frame.origin.x, y: frame.origin.y, width: frame.width, height: height))
  36. NotificationCenter.default.addObserver(self, selector: #selector(self.changeTheming), name: NSNotification.Name(rawValue: k_notificationCenter_changeTheming), object: nil)
  37. }
  38. @objc func changeTheming() {
  39. guard let navigationController = appDelegate.activeDetail.navigationController else { return }
  40. if navigationController.isNavigationBarHidden == false {
  41. backgroundColor = NCBrandColor.sharedInstance.backgroundView
  42. }
  43. }
  44. @objc func setupPdfView(filePath: URL, view: UIView) {
  45. guard let pdfDocument = PDFDocument(url: filePath) else { return }
  46. document = pdfDocument
  47. backgroundColor = NCBrandColor.sharedInstance.backgroundView
  48. displayMode = .singlePageContinuous
  49. autoScales = true
  50. displayDirection = .horizontal
  51. autoresizingMask = [.flexibleWidth, .flexibleHeight, .flexibleTopMargin, .flexibleBottomMargin]
  52. usePageViewController(true, withViewOptions: nil)
  53. view.addSubview(self)
  54. pdfThumbnailView = PDFThumbnailView()
  55. pdfThumbnailView!.translatesAutoresizingMaskIntoConstraints = false
  56. pdfThumbnailView!.pdfView = self
  57. pdfThumbnailView!.layoutMode = .horizontal
  58. pdfThumbnailView!.thumbnailSize = CGSize(width: 40, height: thumbnailViewHeight - 2)
  59. //pdfThumbnailView.layer.shadowOffset.height = -5
  60. //pdfThumbnailView.layer.shadowOpacity = 0.25
  61. view.addSubview(pdfThumbnailView!)
  62. pdfThumbnailView!.heightAnchor.constraint(equalToConstant: thumbnailViewHeight).isActive = true
  63. pdfThumbnailView!.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor).isActive = true
  64. pdfThumbnailView!.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor).isActive = true
  65. pdfThumbnailView!.bottomAnchor.constraint(equalTo: view.safeAreaLayoutGuide.bottomAnchor).isActive = true
  66. let tapGesture = UITapGestureRecognizer(target: self, action: #selector(didTap(_:)))
  67. tapGesture.numberOfTapsRequired = 1
  68. view.addGestureRecognizer(tapGesture)
  69. }
  70. @objc func didTap(_ recognizer: UITapGestureRecognizer) {
  71. guard let navigationController = appDelegate.activeDetail.navigationController else { return }
  72. if navigationController.isNavigationBarHidden {
  73. navigationController.isNavigationBarHidden = false
  74. pdfThumbnailView!.isHidden = false
  75. backgroundColor = NCBrandColor.sharedInstance.backgroundView
  76. appDelegate.activeDetail.view.backgroundColor = backgroundColor
  77. } else {
  78. navigationController.isNavigationBarHidden = true
  79. pdfThumbnailView!.isHidden = true
  80. backgroundColor = .black
  81. appDelegate.activeDetail.view.backgroundColor = backgroundColor
  82. }
  83. DispatchQueue.main.asyncAfter(deadline: .now() + .milliseconds(150)) {
  84. let size = self.appDelegate.activeDetail.backgroundView!.bounds
  85. var height: CGFloat = 0
  86. if navigationController.isNavigationBarHidden {
  87. height = size.height - size.origin.y
  88. } else {
  89. height = size.height - size.origin.y - self.thumbnailViewHeight
  90. }
  91. self.frame = CGRect(x: 0, y: 0, width: size.width, height: height)
  92. }
  93. }
  94. }