367 lines
16 KiB
Swift
367 lines
16 KiB
Swift
//
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// Copyright 2025 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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//
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import SignalServiceKit
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import SignalUI
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class OutgoingLinkPreviewView: UIView {
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init(state: LinkPreviewFetchState.State) {
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super.init(frame: .zero)
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directionalLayoutMargins = .init(top: 0, leading: 12, bottom: 0, trailing: 0)
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translatesAutoresizingMaskIntoConstraints = false
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addConstraint(heightConstraint)
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addSubview(backgroundView)
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backgroundView.translatesAutoresizingMaskIntoConstraints = false
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addConstraints([
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backgroundView.topAnchor.constraint(equalTo: topAnchor),
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backgroundView.leadingAnchor.constraint(equalTo: leadingAnchor),
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backgroundView.trailingAnchor.constraint(equalTo: trailingAnchor),
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backgroundView.bottomAnchor.constraint(equalTo: bottomAnchor),
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])
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addSubview(contentView)
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contentView.translatesAutoresizingMaskIntoConstraints = false
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addConstraints([
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contentView.topAnchor.constraint(equalTo: layoutMarginsGuide.topAnchor),
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contentView.leadingAnchor.constraint(equalTo: layoutMarginsGuide.leadingAnchor),
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contentView.trailingAnchor.constraint(equalTo: layoutMarginsGuide.trailingAnchor),
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contentView.bottomAnchor.constraint(equalTo: layoutMarginsGuide.bottomAnchor),
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])
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configure(withState: state)
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}
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override var bounds: CGRect {
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didSet {
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// Mask to round corners.
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let maskLayer = CAShapeLayer()
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maskLayer.path = UIBezierPath(roundedRect: bounds, cornerRadius: 12).cgPath
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layer.mask = maskLayer
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if oldValue.width != bounds.width {
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updateHeight()
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}
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}
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}
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override func layoutMarginsDidChange() {
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super.layoutMarginsDidChange()
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updateHeight()
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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: Layout
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private static let dateFormatter: DateFormatter = {
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let formatter = DateFormatter()
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formatter.dateStyle = .medium
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formatter.timeStyle = .none
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return formatter
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}()
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private let backgroundView: UIView = {
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let view = UIView()
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view.backgroundColor = .Signal.secondaryFill
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return view
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}()
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private let contentView = UIView()
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private let imageView: UIImageView = {
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let imageView = UIImageView()
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imageView.contentMode = .scaleAspectFill
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imageView.clipsToBounds = true
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imageView.translatesAutoresizingMaskIntoConstraints = false
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imageView.setContentHuggingVerticalHigh()
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return imageView
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}()
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private static let imageSize = CGSize(width: 77, height: 77)
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// (X) button.
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let cancelButton: UIButton = {
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let cancelButton = UIButton(configuration: .bordered())
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cancelButton.configuration?.image = UIImage(imageLiteralResourceName: "x-compact-bold")
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cancelButton.configuration?.baseBackgroundColor = .init(dynamicProvider: { traitCollection in
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traitCollection.userInterfaceStyle == .dark
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? UIColor(rgbHex: 0x787880, alpha: 0.4)
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: UIColor(rgbHex: 0xF5F5F5, alpha: 0.9)
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})
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cancelButton.configuration?.background.visualEffect = UIBlurEffect(style: .systemUltraThinMaterial)
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cancelButton.tintColor = .Signal.label
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cancelButton.configuration?.cornerStyle = .capsule
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cancelButton.translatesAutoresizingMaskIntoConstraints = false
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cancelButton.addConstraints([
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cancelButton.widthAnchor.constraint(equalToConstant: 24),
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cancelButton.heightAnchor.constraint(equalToConstant: 24),
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])
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return cancelButton
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}()
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private lazy var heightConstraint = heightAnchor.constraint(equalToConstant: 0)
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private func updateHeight() {
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guard layoutMarginsGuide.layoutFrame.width > 0 else { return }
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let size = contentView.systemLayoutSizeFitting(
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CGSize(width: layoutMarginsGuide.layoutFrame.width, height: .greatestFiniteMagnitude),
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withHorizontalFittingPriority: .required,
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verticalFittingPriority: .fittingSizeLevel
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)
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heightConstraint.constant = size.height + directionalLayoutMargins.totalHeight
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}
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func resetContent() {
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contentView.removeAllSubviews()
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imageView.image = nil
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}
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func configure(withState state: LinkPreviewFetchState.State) {
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resetContent()
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switch state {
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case .loading:
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configureAsLoading()
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case .loaded(let linkPreviewDraft):
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let draft = LinkPreviewDraft(linkPreviewDraft: linkPreviewDraft)
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if CallLink(url: linkPreviewDraft.url) != nil {
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configureAsCallLinkPreviewDraft(draft: draft)
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} else {
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configureAsLinkPreviewDraft(draft: draft)
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}
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default:
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owsFailBeta("Invalid link preview state: [\(state)]")
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}
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updateHeight()
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}
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private func configureAsLoading() {
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let activityIndicator = UIActivityIndicatorView(style: .medium)
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activityIndicator.tintColor = .Signal.secondaryLabel
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activityIndicator.translatesAutoresizingMaskIntoConstraints = false
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contentView.addSubview(activityIndicator)
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contentView.addConstraints([
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activityIndicator.centerXAnchor.constraint(equalTo: contentView.centerXAnchor),
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activityIndicator.centerYAnchor.constraint(equalTo: contentView.centerYAnchor),
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activityIndicator.centerYAnchor.constraint(equalTo: contentView.topAnchor, constant: 0.5 * Self.imageSize.height),
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])
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activityIndicator.startAnimating()
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}
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private func configureAsLinkPreviewDraft(draft: LinkPreviewDraft) {
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// Text
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let textStack = UIStackView()
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textStack.axis = .vertical
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textStack.alignment = .leading
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textStack.directionalLayoutMargins = .zero
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textStack.isLayoutMarginsRelativeArrangement = true
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if let text = draft.title?.nilIfEmpty {
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let label = UILabel()
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label.text = text
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label.textColor = .Signal.label
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label.numberOfLines = 2
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label.font = .dynamicTypeFootnote.semibold()
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label.lineBreakMode = .byTruncatingTail
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label.setContentHuggingVerticalHigh()
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textStack.addArrangedSubview(label)
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textStack.setCustomSpacing(2, after: label)
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}
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if let text = draft.previewDescription?.nilIfEmpty {
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let label = UILabel()
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label.text = text
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label.textColor = .Signal.label
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label.numberOfLines = 2
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label.font = .dynamicTypeFootnote
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label.lineBreakMode = .byTruncatingTail
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label.setContentHuggingVerticalHigh()
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textStack.addArrangedSubview(label)
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}
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if let displayDomain = draft.displayDomain?.nilIfEmpty {
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var text = displayDomain.lowercased()
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if let date = draft.date {
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text.append(" ⋅ \(Self.dateFormatter.string(from: date))")
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}
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let label = UILabel()
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label.text = text
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label.textColor = .Signal.secondaryLabel
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label.numberOfLines = 1
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label.font = .dynamicTypeCaption1
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label.lineBreakMode = .byTruncatingTail
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label.setContentHuggingVerticalHigh()
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textStack.addArrangedSubview(label)
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}
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let textStackContainer = UIView.container()
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textStackContainer.addSubview(textStack)
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textStack.translatesAutoresizingMaskIntoConstraints = false
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textStackContainer.addConstraints([
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textStack.topAnchor.constraint(greaterThanOrEqualTo: textStackContainer.topAnchor, constant: 12),
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textStack.centerYAnchor.constraint(equalTo: textStackContainer.centerYAnchor),
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textStack.leadingAnchor.constraint(equalTo: textStackContainer.leadingAnchor),
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textStack.trailingAnchor.constraint(equalTo: textStackContainer.trailingAnchor),
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{
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let c = textStack.topAnchor.constraint(equalTo: textStackContainer.topAnchor)
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c.priority = .defaultHigh
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return c
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}()
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])
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let horizontalStack = UIStackView(arrangedSubviews: [textStackContainer])
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horizontalStack.axis = .horizontal
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horizontalStack.translatesAutoresizingMaskIntoConstraints = false
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contentView.addSubview(horizontalStack)
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contentView.addConstraints([
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horizontalStack.topAnchor.constraint(equalTo: contentView.topAnchor),
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horizontalStack.leadingAnchor.constraint(equalTo: contentView.leadingAnchor),
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horizontalStack.trailingAnchor.constraint(equalTo: contentView.trailingAnchor),
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horizontalStack.bottomAnchor.constraint(equalTo: contentView.bottomAnchor),
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])
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// Image
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let cancelButtonPadding: CGFloat = 8 // around all edges
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if draft.imageState == .loaded {
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textStack.directionalLayoutMargins.trailing = 12 // spacing between text and image
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imageView.contentMode = .scaleAspectFill
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draft.imageAsync(thumbnailQuality: .small) { [weak self] image in
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DispatchMainThreadSafe {
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guard let self else { return }
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self.imageView.image = image
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}
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}
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horizontalStack.addArrangedSubview(imageView)
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horizontalStack.addSubview(cancelButton)
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horizontalStack.addConstraints([
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imageView.widthAnchor.constraint(equalToConstant: Self.imageSize.width),
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imageView.heightAnchor.constraint(greaterThanOrEqualToConstant: Self.imageSize.height),
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cancelButton.topAnchor.constraint(equalTo: imageView.topAnchor, constant: cancelButtonPadding),
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cancelButton.trailingAnchor.constraint(equalTo: imageView.trailingAnchor, constant: -cancelButtonPadding),
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])
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} else {
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textStack.directionalLayoutMargins.trailing = 0 // `cancelButtonContainer` has enough spacing between cancel button and text
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let cancelButtonContainer = UIView.container()
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cancelButtonContainer.addSubview(cancelButton)
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cancelButtonContainer.addConstraints([
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cancelButton.topAnchor.constraint(equalTo: cancelButtonContainer.topAnchor, constant: cancelButtonPadding),
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cancelButton.leadingAnchor.constraint(equalTo: cancelButtonContainer.leadingAnchor, constant: cancelButtonPadding),
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cancelButton.trailingAnchor.constraint(equalTo: cancelButtonContainer.trailingAnchor, constant: -cancelButtonPadding),
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cancelButton.bottomAnchor.constraint(lessThanOrEqualTo: cancelButtonContainer.bottomAnchor, constant: -cancelButtonPadding),
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])
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horizontalStack.addArrangedSubview(cancelButtonContainer)
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}
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}
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private func configureAsCallLinkPreviewDraft(draft: LinkPreviewDraft) {
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// Image
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let imageSize: CGFloat = 27
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let cameraIcon = UIImageView(image: UIImage(imageLiteralResourceName: "video"))
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cameraIcon.tintColor = .init(rgbHex: 0x4F4F69)
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let circleSize: CGFloat = 48
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let circleView = CircleView()
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circleView.backgroundColor = .init(rgbHex: 0xD2D2DA)
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circleView.addSubview(cameraIcon)
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let imageContainer = UIView.container()
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imageContainer.addSubview(circleView)
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cameraIcon.translatesAutoresizingMaskIntoConstraints = false
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circleView.translatesAutoresizingMaskIntoConstraints = false
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imageContainer.addConstraints([
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cameraIcon.widthAnchor.constraint(equalToConstant: imageSize),
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cameraIcon.heightAnchor.constraint(equalToConstant: imageSize),
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cameraIcon.centerXAnchor.constraint(equalTo: circleView.centerXAnchor),
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cameraIcon.centerYAnchor.constraint(equalTo: circleView.centerYAnchor),
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circleView.widthAnchor.constraint(equalToConstant: circleSize),
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circleView.heightAnchor.constraint(equalToConstant: circleSize),
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circleView.topAnchor.constraint(equalTo: imageContainer.topAnchor, constant: 4),
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circleView.leadingAnchor.constraint(equalTo: imageContainer.leadingAnchor),
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circleView.trailingAnchor.constraint(equalTo: imageContainer.trailingAnchor),
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circleView.bottomAnchor.constraint(lessThanOrEqualTo: imageContainer.bottomAnchor),
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])
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// Text
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let textStack = UIStackView(arrangedSubviews: [ ])
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textStack.axis = .vertical
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textStack.alignment = .leading
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textStack.spacing = 2
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textStack.isLayoutMarginsRelativeArrangement = true
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textStack.directionalLayoutMargins = .init(hMargin: 0, vMargin: 4)
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let titleLabel = UILabel()
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titleLabel.text = CallStrings.signalCall
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titleLabel.textColor = .Signal.label
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titleLabel.numberOfLines = 2
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titleLabel.font = .dynamicTypeFootnote.semibold()
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titleLabel.lineBreakMode = .byTruncatingTail
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titleLabel.setContentHuggingVerticalHigh()
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textStack.addArrangedSubview(titleLabel)
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let subtitleLabel = UILabel()
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subtitleLabel.text = CallStrings.callLinkDescription
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subtitleLabel.textColor = .Signal.label
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subtitleLabel.numberOfLines = 2
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subtitleLabel.font = .dynamicTypeFootnote
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subtitleLabel.lineBreakMode = .byTruncatingTail
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subtitleLabel.setContentHuggingVerticalHigh()
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textStack.addArrangedSubview(subtitleLabel)
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if let displayDomain = draft.displayDomain?.nilIfEmpty {
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var text = displayDomain.lowercased()
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if let date = draft.date {
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text.append(" ⋅ \(Self.dateFormatter.string(from: date))")
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}
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let label = UILabel()
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label.text = text
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label.textColor = .Signal.secondaryLabel
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label.numberOfLines = 1
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label.font = .dynamicTypeCaption1
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label.lineBreakMode = .byTruncatingTail
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label.setContentHuggingVerticalHigh()
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textStack.addArrangedSubview(label)
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}
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// Cancel button
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let cancelButtonContainer = UIView.container()
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cancelButtonContainer.addSubview(cancelButton)
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cancelButtonContainer.addConstraints([
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cancelButton.topAnchor.constraint(equalTo: cancelButtonContainer.topAnchor),
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cancelButton.leadingAnchor.constraint(equalTo: cancelButtonContainer.leadingAnchor, constant: 6),
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cancelButton.trailingAnchor.constraint(equalTo: cancelButtonContainer.trailingAnchor, constant: -8),
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cancelButton.bottomAnchor.constraint(lessThanOrEqualTo: cancelButtonContainer.bottomAnchor),
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])
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let horizontalStack = UIStackView(arrangedSubviews: [ imageContainer, textStack, cancelButtonContainer ])
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horizontalStack.axis = .horizontal
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horizontalStack.setCustomSpacing(12, after: imageContainer)
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horizontalStack.isLayoutMarginsRelativeArrangement = true
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horizontalStack.directionalLayoutMargins = .init(hMargin: 0, vMargin: 8)
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horizontalStack.translatesAutoresizingMaskIntoConstraints = false
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contentView.addSubview(horizontalStack)
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contentView.addConstraints([
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horizontalStack.topAnchor.constraint(equalTo: contentView.topAnchor),
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horizontalStack.leadingAnchor.constraint(equalTo: contentView.leadingAnchor),
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horizontalStack.trailingAnchor.constraint(equalTo: contentView.trailingAnchor),
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horizontalStack.bottomAnchor.constraint(equalTo: contentView.bottomAnchor),
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])
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}
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}
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