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xue-ndxue-nd
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add PDFViewer
1 parent dfdee4a commit 02776a8

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-10
lines changed

‎Source/XUI/Collection View Layout/InfiniteCollectionViewLayout.swift‎

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//
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// InfiniteCollectionViewLayout.swift
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// Pods
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// XUI
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//
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// Created by xueqooy on 2023/8/21.
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//

‎Source/XUI/Collection View Layout/SnapToCenterCollectionViewLayout.swift‎

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//
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// SnapToCenterCollectionViewLayout.swift
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// Pods
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// XUI
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//
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// Created by xueqooy on 2023/8/21.
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//

‎Source/XUI/Extensions/TimeInterval+MediaTime.swift‎

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//
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// TimeInterval+MediaTime.swift
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// Pods
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// XUI
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//
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// Created by xueqooy on 2024/12/2.
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//

‎Source/XUI/Gizmos/ImageView.swift‎

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//
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// ImageView.swift
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// Pods
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// XUI
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//
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// Created by xueqooy on 2024/12/4.
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//

‎Source/XUI/PDF Viewer/PDFControlBar.swift‎

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//
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// PDFControlBar.swift
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// XUI
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//
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// Created by xueqooy on 2024/12/26.
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//
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import UIKit
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class PDFControlBar: UIView {
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var numberOfPages: Int = 0 {
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didSet {
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guard oldValue != numberOfPages else { return }
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updatePageLabel()
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updatePageSlider()
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}
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}
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var currentPageIndex: Int = 0 {
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didSet {
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guard oldValue != currentPageIndex else { return }
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updatePageLabel()
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if !pageSliderDragging {
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updatePageSlider()
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}
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}
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}
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var minScaleFactor: CGFloat = 0 {
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didSet {
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guard oldValue != minScaleFactor else { return }
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scaleFactorSlider.minimumValue = Float(minScaleFactor)
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}
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}
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var maxScaleFactor: CGFloat = 0 {
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didSet {
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guard oldValue != maxScaleFactor else { return }
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scaleFactorSlider.maximumValue = Float(maxScaleFactor)
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}
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}
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var currentScaleFactor: CGFloat = 0 {
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didSet {
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guard oldValue != currentScaleFactor, !scaleFactorSliderDragging else { return }
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scaleFactorSlider.value = Float(currentScaleFactor)
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}
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}
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var goPageHandler: ((Int) -> Void)?
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var updateScaleFactorHandler: ((CGFloat) -> Void)?
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var fullscreenHandler: (() -> Void)?
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override var intrinsicContentSize: CGSize {
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CGSize(width: UIView.noIntrinsicMetric, height: 31)
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}
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private let pageLabel = UILabel(textColor: .white, font: Fonts.caption)
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private let pageSlider = PDFControlSlider(type: .page)
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private let scaleFactorSlider = PDFControlSlider(type: .scaleFactor)
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private let fullscreenButton = Button(image: Icons.expand, imageSize: .square(14), foregroundColor: .white)
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private var hapticFeedback: HapticFeedback?
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private var pageSliderDragging = false
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private var scaleFactorSliderDragging = false
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override init(frame: CGRect) {
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super.init(frame: frame)
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initialize()
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}
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@available(*, unavailable)
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required init?(coder: NSCoder) {
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fatalError("init(coder:) has not been implemented")
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}
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private func initialize() {
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backgroundColor = Colors.darkTeal
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let stackView = HStackView(alignment: .center, spacing: .XUI.spacing2) {
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pageLabel
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pageSlider
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scaleFactorSlider
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fullscreenButton
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}
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addSubview(stackView) { make in
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make.left.right.equalToSuperview().inset(CGFloat.XUI.spacing2)
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make.top.bottom.equalToSuperview()
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}
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pageSlider.addTarget(self, action: #selector(Self.startDragging(_:)), for: .touchDown)
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pageSlider.addTarget(self, action: #selector(Self.endDragging(_:)), for: [.touchUpInside, .touchUpOutside, .touchCancel])
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pageSlider.addTarget(self, action: #selector(Self.valueChanged(_:)), for: .valueChanged)
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scaleFactorSlider.addTarget(self, action: #selector(Self.startDragging(_:)), for: .touchDown)
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scaleFactorSlider.addTarget(self, action: #selector(Self.endDragging(_:)), for: [.touchUpInside, .touchUpOutside, .touchCancel])
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scaleFactorSlider.addTarget(self, action: #selector(Self.valueChanged(_:)), for: .valueChanged)
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fullscreenButton.touchUpInsideAction = { [weak self] _ in
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self?.fullscreenHandler?()
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}
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}
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private func updatePageLabel() {
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pageLabel.text = "\(currentPageIndex + 1) / \(numberOfPages)"
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}
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private func updatePageSlider() {
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if numberOfPages <= 2 {
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pageSlider.isEnabled = false
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pageSlider.maximumValue = 1
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pageSlider.value = 1
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} else {
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pageSlider.isEnabled = true
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// numberOfPages: 3 4 5 6 7 8 9 10
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// maximumValue : 1 1 2 2 3 3 4 4
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pageSlider.maximumValue = Float((numberOfPages - 1) / 2)
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// currentPageIndex: 0 1 2 3 4 5 6 7
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// value : 0 0 1 1 2 2 3 3
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pageSlider.value = Float(currentPageIndex / 2)
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}
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}
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@objc private func startDragging(_ slider: PDFControlSlider) {
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if slider === pageSlider {
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pageSliderDragging = true
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hapticFeedback = HapticFeedback(type: .light)
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hapticFeedback!.prepare()
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} else if slider === scaleFactorSlider {
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scaleFactorSliderDragging = true
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}
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}
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@objc private func valueChanged(_ slider: PDFControlSlider) {
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if slider === pageSlider {
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let expectedPageIndex = Int(round(pageSlider.value)) * 2
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if currentPageIndex != expectedPageIndex {
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currentPageIndex = expectedPageIndex
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hapticFeedback?.trigger()
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goPageHandler?(expectedPageIndex)
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}
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} else if slider === scaleFactorSlider {
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updateScaleFactorHandler?(CGFloat(slider.value))
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}
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}
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@objc private func endDragging(_ slider: PDFControlSlider) {
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if slider === pageSlider {
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pageSliderDragging = false
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hapticFeedback = nil
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let expectedPageIndex = Int(round(pageSlider.value)) * 2
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pageSlider.value = Float(expectedPageIndex / 2)
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} else if slider === scaleFactorSlider {
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scaleFactorSliderDragging = false
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}
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}
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}

‎Source/XUI/PDF Viewer/PDFFullscreenControlBar.swift‎

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//
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// PDFFullscreenControlBar.swift
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// XUI
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//
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// Created by xueqooy on 2024/12/26.
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//
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import UIKit
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import PDFKit
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class PDFFullscreenControlBar: UIView {
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var exitHandler: (() -> Void)?
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var updateDisplayModeHandler: ((PDFDisplayMode) -> Void)?
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var displayMode: PDFDisplayMode = .twoUpContinuous {
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didSet {
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updateModeButtonImage()
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}
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}
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var numberOfPages: Int = 0 {
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didSet {
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guard oldValue != numberOfPages else { return }
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pageChanged()
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}
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}
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var currentPageIndex: Int = 0 {
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didSet {
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guard oldValue != currentPageIndex else { return }
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pageChanged()
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}
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}
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private lazy var modeButton: Button = {
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let button = Button(configuration: .init(imageTransform: CGAffineTransform(rotationAngle: .pi / 2), foregroundColor: .white)) { [weak self] button in
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guard let self else { return }
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self.displayMode = displayMode == .singlePageContinuous ? .twoUpContinuous : .singlePageContinuous
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button.configuration.image = displayMode == .singlePageContinuous ? singleColumnImage : doubleColumnImage
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self.updateDisplayModeHandler?(displayMode)
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}
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button.imageTransition = [.fade, .scale]
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button.hitTestSlop = .init(top: -10, left: -6, bottom: -10, right: -6)
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return button
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}()
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private let pageLabel = UILabel(textColor: .white, font: Fonts.body3Bold, textAlignment: .center)
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private lazy var exitButton: Button = {
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let button = Button(image: Icons.collapse, imageSize: .square(20), foregroundColor: .white) { [weak self] _ in
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self?.exitHandler?()
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}
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button.hitTestSlop = .init(top: -10, left: -6, bottom: -10, right: -6)
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return button
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}()
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private let doubleColumnImage = UIImage(systemName: "rectangle.grid.2x2", withConfiguration: UIImage.SymbolConfiguration(pointSize: 20, weight: .medium))!
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private let singleColumnImage = UIImage(systemName: "rectangle.grid.1x2", withConfiguration: UIImage.SymbolConfiguration(pointSize: 20, weight: .medium))!
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init() {
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super.init(frame: .zero)
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let colors = [Colors.darkTeal.withAlphaComponent(0.8), Colors.darkTeal.withAlphaComponent(0)]
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let gradient = BackgroundConfiguration.Gradient(colors: colors, startPoint: .init(x: 0.5, y: 0), endPoint: CGPoint(x: 0.5, y: 1))
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let backgroundView = BackgroundView(configuration: .init(gradient: gradient))
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addSubview(backgroundView) { make in
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make.edges.equalToSuperview()
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}
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let stackView = HStackView(alignment: .center, spacing: .XUI.spacing3) {
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modeButton
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HSpacerView.flexible()
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exitButton
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}
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addSubview(stackView) { make in
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make.left.right.equalTo(self.safeAreaLayoutGuide).inset(CGFloat.XUI.spacing3)
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make.top.equalTo(self.safeAreaLayoutGuide)
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make.bottom.equalToSuperview()
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make.height.equalTo(44)
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}
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addSubview(pageLabel) { make in
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make.center.equalTo(stackView)
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}
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updateModeButtonImage()
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}
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required init?(coder: NSCoder) {
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fatalError("init(coder:) has not been implemented")
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}
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private func updateModeButtonImage() {
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modeButton.configuration.image = displayMode == .singlePageContinuous ? singleColumnImage : doubleColumnImage
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}
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private func pageChanged() {
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modeButton.isHidden = numberOfPages <= 1
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if numberOfPages > 1 {
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pageLabel.isHidden = false
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pageLabel.text = "\(currentPageIndex + 1) / \(numberOfPages)"
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} else {
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pageLabel.isHidden = true
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}
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}
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}

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