Liz Malinouskaya
91 lines
3.3 KiB
Swift
91 lines
3.3 KiB
Swift
//
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// LaunchScreenScrollView.swift
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// PrivadoVPN
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//
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// Created by Lizaveta Malinouskaya on 6/22/21.
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// Copyright © 2021 Privado LLC. All rights reserved.
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//
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import UIKit
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class LaunchScreenScrollView: UITextView {
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enum Constants {
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enum UI {
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static let font = UIFont.primary(size: 13, weight: .medium)
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static let textColor = Colors.basicText.color
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static let bgColor = Colors.Base.primaryDarkBlue.color
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static let insetHorizontal: CGFloat = 32
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static let insetVertical: CGFloat = 60
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static let lineSpacing: CGFloat = 19
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}
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enum LocalizedString {
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static let content = "launch.content"
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}
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}
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private var compactConstraints = [NSLayoutConstraint]()
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private var regularConstraints = [NSLayoutConstraint]()
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private var sharedConstraints = [NSLayoutConstraint]()
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private let isLandscapeModeEmitter = Emitter<Bool>()
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// MARK: - Init
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init() {
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super.init(frame: .zero, textContainer: nil)
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configureUI()
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self.isLandscapeModeEmitter.addReaction { [weak self] isLandscape -> ShouldContinueReceiveNotifications in
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self?.activateLayoutFor(landscape: isLandscape)
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return self.isExist
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}
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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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// MARK: - UI
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private func configureUI() {
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self.translatesAutoresizingMaskIntoConstraints = false
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self.showsVerticalScrollIndicator = false
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self.showsHorizontalScrollIndicator = false
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self.isEditable = false
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self.setContentText(with: self)
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// Self apperance
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self.font = Constants.UI.font
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self.textColor = Constants.UI.textColor
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self.backgroundColor = Constants.UI.bgColor
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self.textContainerInset = UIEdgeInsets(top: Constants.UI.insetVertical, left: Constants.UI.insetHorizontal, bottom: Constants.UI.insetVertical, right: Constants.UI.insetHorizontal)
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// Self scroll indicator
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self.isScrollEnabled = true
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self.showsVerticalScrollIndicator = true
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self.scrollIndicatorInsets = UIEdgeInsets(top: Constants.UI.insetVertical, left: 0, bottom: Constants.UI.insetVertical, right: 0)
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}
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private func setContentText(with container: UITextView) {
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let text = NSLocalizedString(Constants.LocalizedString.content, comment: "Privacy policy")
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let mutableAttributedString = NSMutableAttributedString(string: text)
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let style = NSMutableParagraphStyle()
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style.lineSpacing = Constants.UI.lineSpacing
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mutableAttributedString.addAttributes([NSAttributedString.Key.paragraphStyle: style], range: NSRange(location: 0, length: mutableAttributedString.length))
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self.attributedText = mutableAttributedString
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}
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private func activateLayoutFor(landscape: Bool) {
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if landscape {
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NSLayoutConstraint.deactivate(self.compactConstraints)
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NSLayoutConstraint.activate(self.regularConstraints)
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} else {
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NSLayoutConstraint.deactivate(self.regularConstraints)
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NSLayoutConstraint.activate(self.compactConstraints)
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}
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NSLayoutConstraint.activate(self.sharedConstraints)
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}
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}
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