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[WIP] Generate QR-code for a proxy and show it (#2394)
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130 changes: 130 additions & 0 deletions
130
deltachat-ios/Controller/Settings/Proxy/ShareProxyViewController.swift
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,130 @@ | ||
| import UIKit | ||
| import DcCore | ||
| import SDWebImageSVGKitPlugin | ||
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| class ShareProxyViewController: UIViewController { | ||
| private let dcContext: DcContext | ||
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| private let contentStackView: UIStackView | ||
| private let contentScrollView: UIScrollView | ||
| private let qrContentView: UIImageView | ||
| private let shareLinkButton: UIButton | ||
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| private let proxyUrlString: String | ||
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| var verticalCenterConstraint: NSLayoutConstraint? | ||
| var contentTopAnchor: NSLayoutConstraint? | ||
| var contentBottomAnchor: NSLayoutConstraint? | ||
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| init(dcContext: DcContext, proxyUrlString: String) { | ||
| self.dcContext = dcContext | ||
| self.proxyUrlString = proxyUrlString | ||
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| qrContentView = UIImageView() | ||
| qrContentView.contentMode = .scaleAspectFit | ||
| qrContentView.translatesAutoresizingMaskIntoConstraints = false | ||
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| shareLinkButton = UIButton(type: .system) | ||
| shareLinkButton.setTitle(String.localized("proxy_share_link"), for: .normal) | ||
| shareLinkButton.translatesAutoresizingMaskIntoConstraints = false | ||
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| contentStackView = UIStackView(arrangedSubviews: [qrContentView, shareLinkButton, UIView()]) | ||
| contentStackView.translatesAutoresizingMaskIntoConstraints = false | ||
| contentStackView.axis = .vertical | ||
| contentStackView.alignment = .center | ||
| contentStackView.spacing = 16 | ||
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| contentScrollView = UIScrollView() | ||
| contentScrollView.translatesAutoresizingMaskIntoConstraints = false | ||
| contentScrollView.addSubview(contentStackView) | ||
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| super.init(nibName: nil, bundle: nil) | ||
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| if #available(iOS 13, *) { | ||
| view.backgroundColor = .secondarySystemBackground | ||
| } else { | ||
| view.backgroundColor = DcColors.defaultBackgroundColor | ||
| } | ||
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| shareLinkButton.addTarget(self, action: #selector(ShareProxyViewController.shareInviteLink(_:)), for: .touchUpInside) | ||
| shareLinkButton.setTitleColor(DcColors.primary, for: .normal) | ||
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| let svg = dcContext.createQRSVG(for: proxyUrlString) | ||
| qrContentView.image = getQrImage(svg: svg) | ||
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| view.addSubview(contentScrollView) | ||
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| setupConstraints() | ||
| } | ||
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| required init?(coder: NSCoder) { fatalError() } | ||
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| private func setupConstraints() { | ||
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| let qrImageRatio: CGFloat | ||
| if let image = qrContentView.image { | ||
| qrImageRatio = image.size.height / image.size.width | ||
| } else { | ||
| qrImageRatio = 1 | ||
| } | ||
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| verticalCenterConstraint = contentStackView.centerYAnchor.constraint(equalTo: contentScrollView.centerYAnchor) | ||
| contentTopAnchor = contentStackView.topAnchor.constraint(equalTo: contentScrollView.topAnchor, constant: 16) | ||
| contentBottomAnchor = contentScrollView.bottomAnchor.constraint(equalTo: contentStackView.bottomAnchor, constant: 16) | ||
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| let constraints = [ | ||
| qrContentView.widthAnchor.constraint(lessThanOrEqualTo: view.safeAreaLayoutGuide.widthAnchor, multiplier: 0.75), | ||
| qrContentView.widthAnchor.constraint(lessThanOrEqualToConstant: 260), | ||
| qrContentView.heightAnchor.constraint(equalTo: qrContentView.widthAnchor, multiplier: qrImageRatio), | ||
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| contentScrollView.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor), | ||
| contentScrollView.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor), | ||
| view.safeAreaLayoutGuide.trailingAnchor.constraint(equalTo: contentScrollView.trailingAnchor), | ||
| view.safeAreaLayoutGuide.bottomAnchor.constraint(equalTo: contentScrollView.bottomAnchor), | ||
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| contentStackView.leadingAnchor.constraint(equalTo: contentScrollView.leadingAnchor), | ||
| contentScrollView.trailingAnchor.constraint(equalTo: contentStackView.trailingAnchor), | ||
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| contentStackView.centerXAnchor.constraint(equalTo: contentScrollView.centerXAnchor), | ||
| ] | ||
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| traitCollectionDidChange(traitCollection) | ||
| NSLayoutConstraint.activate(constraints) | ||
| } | ||
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| override func traitCollectionDidChange(_ previousTraitCollection: UITraitCollection?) { | ||
| let orientation = UIApplication.shared.statusBarOrientation | ||
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| switch orientation { | ||
| case .portrait, .portraitUpsideDown: | ||
| verticalCenterConstraint?.isActive = true | ||
| contentTopAnchor?.isActive = false | ||
| contentBottomAnchor?.isActive = false | ||
| case .landscapeLeft, .landscapeRight: | ||
| verticalCenterConstraint?.isActive = false | ||
| contentTopAnchor?.isActive = true | ||
| contentBottomAnchor?.isActive = true | ||
| case .unknown: | ||
| // do nothing | ||
| break | ||
| @unknown default: | ||
| break | ||
| } | ||
| } | ||
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| // MARK: - lifecycle | ||
| func getQrImage(svg: String?) -> UIImage? { | ||
| guard let svg else { return nil } | ||
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| let svgData = svg.data(using: .utf8) | ||
| let image = SDImageSVGKCoder.shared.decodedImage(with: svgData, options: [:]) | ||
| return image | ||
| } | ||
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| // MARK: - Actions | ||
| @objc private func shareInviteLink(_ sender: UIButton) { | ||
| guard let inviteLinkURL = URL(string: proxyUrlString) else { return } | ||
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| Utils.share(url: inviteLinkURL, parentViewController: self, sourceView: sender) | ||
| } | ||
| } |