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- //
- // NCViewerPDF.swift
- // Nextcloud
- //
- // Created by Marino Faggiana on 06/02/2020.
- // Copyright © 2020 Marino Faggiana. All rights reserved.
- //
- // Author Marino Faggiana <marino.faggiana@nextcloud.com>
- //
- // This program is free software: you can redistribute it and/or modify
- // it under the terms of the GNU General Public License as published by
- // the Free Software Foundation, either version 3 of the License, or
- // (at your option) any later version.
- //
- // This program is distributed in the hope that it will be useful,
- // but WITHOUT ANY WARRANTY; without even the implied warranty of
- // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- // GNU General Public License for more details.
- //
- // You should have received a copy of the GNU General Public License
- // along with this program. If not, see <http://www.gnu.org/licenses/>.
- //
- import Foundation
- import PDFKit
- @available(iOS 11, *)
- @objc class NCViewerPDF: PDFView {
-
- private let appDelegate = UIApplication.shared.delegate as! AppDelegate
- private var thumbnailViewHeight: CGFloat = 48
- private var pdfThumbnailView: PDFThumbnailView?
- required init?(coder: NSCoder) {
- super.init(coder: coder)
- }
-
- override init(frame: CGRect) {
-
- let height = frame.height - thumbnailViewHeight
- super.init(frame: CGRect(x: frame.origin.x, y: frame.origin.y, width: frame.width, height: height))
-
- NotificationCenter.default.addObserver(self, selector: #selector(self.changeTheming), name: NSNotification.Name(rawValue: k_notificationCenter_changeTheming), object: nil)
- }
-
- @objc func changeTheming() {
- guard let navigationController = appDelegate.activeDetail.navigationController else { return }
- if navigationController.isNavigationBarHidden == false {
- backgroundColor = NCBrandColor.sharedInstance.backgroundView
- }
- }
-
- @objc func setupPdfView(filePath: URL, view: UIView) {
- guard let pdfDocument = PDFDocument(url: filePath) else { return }
-
- document = pdfDocument
- backgroundColor = NCBrandColor.sharedInstance.backgroundView
- displayMode = .singlePageContinuous
- autoScales = true
- displayDirection = .horizontal
- autoresizingMask = [.flexibleWidth, .flexibleHeight, .flexibleTopMargin, .flexibleBottomMargin]
- usePageViewController(true, withViewOptions: nil)
-
- view.addSubview(self)
-
- pdfThumbnailView = PDFThumbnailView()
- pdfThumbnailView!.translatesAutoresizingMaskIntoConstraints = false
- pdfThumbnailView!.pdfView = self
- pdfThumbnailView!.layoutMode = .horizontal
- pdfThumbnailView!.thumbnailSize = CGSize(width: 40, height: thumbnailViewHeight - 2)
- //pdfThumbnailView.layer.shadowOffset.height = -5
- //pdfThumbnailView.layer.shadowOpacity = 0.25
-
- view.addSubview(pdfThumbnailView!)
-
- pdfThumbnailView!.heightAnchor.constraint(equalToConstant: thumbnailViewHeight).isActive = true
- pdfThumbnailView!.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor).isActive = true
- pdfThumbnailView!.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor).isActive = true
- pdfThumbnailView!.bottomAnchor.constraint(equalTo: view.safeAreaLayoutGuide.bottomAnchor).isActive = true
-
- let tapGesture = UITapGestureRecognizer(target: self, action: #selector(didTap(_:)))
- tapGesture.numberOfTapsRequired = 1
- view.addGestureRecognizer(tapGesture)
- }
-
- @objc func didTap(_ recognizer: UITapGestureRecognizer) {
- guard let navigationController = appDelegate.activeDetail.navigationController else { return }
-
- if navigationController.isNavigationBarHidden {
-
- navigationController.isNavigationBarHidden = false
- pdfThumbnailView!.isHidden = false
- backgroundColor = NCBrandColor.sharedInstance.backgroundView
- appDelegate.activeDetail.view.backgroundColor = backgroundColor
-
- } else {
-
- navigationController.isNavigationBarHidden = true
- pdfThumbnailView!.isHidden = true
- backgroundColor = .black
- appDelegate.activeDetail.view.backgroundColor = backgroundColor
- }
-
- DispatchQueue.main.asyncAfter(deadline: .now() + .milliseconds(150)) {
- let size = self.appDelegate.activeDetail.backgroundView!.bounds
- var height: CGFloat = 0
-
- if navigationController.isNavigationBarHidden {
- height = size.height - size.origin.y
- } else {
- height = size.height - size.origin.y - self.thumbnailViewHeight
- }
-
- self.frame = CGRect(x: 0, y: 0, width: size.width, height: height)
- }
- }
- }
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