192 lines
7.4 KiB
Swift
192 lines
7.4 KiB
Swift
//
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// TravelAlbumCodeDialogViewController.swift
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// suixinkan
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//
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import Kingfisher
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import SnapKit
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import UIKit
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/// 相册码弹窗，对齐 Android `TravelAlbumCodeDialog`。
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final class TravelAlbumCodeDialogViewController: UIViewController {
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var onClose: (() -> Void)?
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var onDownload: (() -> Void)?
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private let state: TravelAlbumEntryViewModel.AlbumCodeState
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private let dimView = UIView()
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private let cardView = UIView()
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private let titleLabel = UILabel()
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private let closeButton = UIButton(type: .system)
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private let albumNameLabel = UILabel()
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private let qrImageView = UIImageView()
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private let loadingIndicator = UIActivityIndicatorView(style: .medium)
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private let hintLabel = TravelAlbumCodeHintLabel(
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contentInsets: UIEdgeInsets(top: 8, left: 16, bottom: 8, right: 16)
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)
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private let downloadButton = UIButton(type: .system)
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init(state: TravelAlbumEntryViewModel.AlbumCodeState) {
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self.state = state
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super.init(nibName: nil, bundle: nil)
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modalPresentationStyle = .overFullScreen
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modalTransitionStyle = .crossDissolve
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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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override func viewDidLoad() {
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super.viewDidLoad()
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setupUI()
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setupConstraints()
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applyState()
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}
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private func setupUI() {
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dimView.backgroundColor = UIColor.black.withAlphaComponent(0.35)
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cardView.backgroundColor = .white
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cardView.layer.cornerRadius = 16
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cardView.clipsToBounds = true
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titleLabel.text = "相册码"
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titleLabel.font = .systemFont(ofSize: 18, weight: .bold)
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titleLabel.textColor = AppColor.textPrimary
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titleLabel.textAlignment = .center
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closeButton.setImage(UIImage(systemName: "xmark"), for: .normal)
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closeButton.tintColor = AppColor.textSecondary
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albumNameLabel.font = .systemFont(ofSize: 18, weight: .medium)
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albumNameLabel.textColor = AppColor.textPrimary
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albumNameLabel.textAlignment = .center
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qrImageView.contentMode = .scaleAspectFit
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qrImageView.layer.cornerRadius = 8
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qrImageView.clipsToBounds = true
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hintLabel.textAlignment = .center
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hintLabel.font = .systemFont(ofSize: 13)
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hintLabel.textColor = AppColor.textSecondary
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hintLabel.backgroundColor = AppColor.primary.withAlphaComponent(0.06)
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hintLabel.layer.cornerRadius = 8
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hintLabel.layer.borderWidth = 1
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hintLabel.layer.borderColor = AppColor.primary.withAlphaComponent(0.35).cgColor
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hintLabel.clipsToBounds = true
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let hint = NSMutableAttributedString(string: "微信", attributes: [.foregroundColor: AppColor.textSecondary])
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hint.append(NSAttributedString(string: "扫一扫", attributes: [.foregroundColor: AppColor.primary, .font: UIFont.systemFont(ofSize: 13, weight: .medium)]))
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hint.append(NSAttributedString(string: "，查看下载照片", attributes: [.foregroundColor: AppColor.textSecondary]))
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hintLabel.attributedText = hint
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downloadButton.setTitle("下载图片", for: .normal)
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downloadButton.setTitleColor(.white, for: .normal)
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downloadButton.titleLabel?.font = .systemFont(ofSize: 16, weight: .medium)
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downloadButton.backgroundColor = AppColor.primary
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downloadButton.layer.cornerRadius = 23
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view.addSubview(dimView)
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view.addSubview(cardView)
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[titleLabel, closeButton, albumNameLabel, qrImageView, loadingIndicator, hintLabel, downloadButton].forEach(cardView.addSubview)
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closeButton.addTarget(self, action: #selector(closeTapped), for: .touchUpInside)
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downloadButton.addTarget(self, action: #selector(downloadTapped), for: .touchUpInside)
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}
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private func setupConstraints() {
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dimView.snp.makeConstraints { make in
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make.edges.equalToSuperview()
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}
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cardView.snp.makeConstraints { make in
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make.center.equalToSuperview()
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make.width.equalToSuperview().multipliedBy(0.78)
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}
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titleLabel.snp.makeConstraints { make in
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make.top.equalToSuperview().offset(18)
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make.leading.trailing.equalToSuperview().inset(48)
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}
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closeButton.snp.makeConstraints { make in
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make.centerY.equalTo(titleLabel)
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make.trailing.equalToSuperview().offset(-20)
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make.size.equalTo(28)
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}
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albumNameLabel.snp.makeConstraints { make in
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make.top.equalTo(titleLabel.snp.bottom).offset(18)
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make.leading.trailing.equalToSuperview().inset(20)
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}
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qrImageView.snp.makeConstraints { make in
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make.top.equalTo(albumNameLabel.snp.bottom).offset(18)
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make.centerX.equalToSuperview()
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make.size.equalTo(190)
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}
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loadingIndicator.snp.makeConstraints { make in
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make.center.equalTo(qrImageView)
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}
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hintLabel.snp.makeConstraints { make in
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make.top.equalTo(qrImageView.snp.bottom).offset(18)
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make.centerX.equalToSuperview()
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make.leading.greaterThanOrEqualToSuperview().offset(20)
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make.trailing.lessThanOrEqualToSuperview().offset(-20)
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}
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downloadButton.snp.makeConstraints { make in
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make.top.equalTo(hintLabel.snp.bottom).offset(20)
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make.leading.trailing.equalToSuperview().inset(20)
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make.height.equalTo(46)
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make.bottom.equalToSuperview().offset(-18)
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}
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}
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private func applyState() {
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albumNameLabel.text = state.albumName.isEmpty ? "未命名相册" : state.albumName
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if state.isLoading {
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loadingIndicator.startAnimating()
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qrImageView.image = nil
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} else {
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loadingIndicator.stopAnimating()
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if let url = URL(string: state.qrImageUrl), !state.qrImageUrl.isEmpty {
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qrImageView.kf.setImage(with: url)
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} else {
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qrImageView.image = UIImage(systemName: "qrcode")
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qrImageView.tintColor = AppColor.textSecondary
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}
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}
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downloadButton.isEnabled = !state.isLoading && !state.qrImageUrl.isEmpty
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downloadButton.alpha = downloadButton.isEnabled ? 1 : 0.5
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}
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func updateDownloading(_ isDownloading: Bool) {
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downloadButton.setTitle(isDownloading ? "保存中..." : "下载图片", for: .normal)
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downloadButton.isEnabled = !isDownloading
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}
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@objc private func closeTapped() {
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onClose?()
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dismiss(animated: true)
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}
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@objc private func downloadTapped() {
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onDownload?()
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}
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}
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/// 为相册码提示文案提供与 Android 弹窗一致的内容留白。
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private final class TravelAlbumCodeHintLabel: UILabel {
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private let contentInsets: UIEdgeInsets
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init(contentInsets: UIEdgeInsets) {
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self.contentInsets = contentInsets
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super.init(frame: .zero)
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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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override func drawText(in rect: CGRect) {
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super.drawText(in: rect.inset(by: contentInsets))
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}
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override var intrinsicContentSize: CGSize {
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let size = super.intrinsicContentSize
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return CGSize(
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width: size.width + contentInsets.left + contentInsets.right,
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height: size.height + contentInsets.top + contentInsets.bottom
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)
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}
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}
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