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mastodon-app-ufficiale-ipho.../MastodonSDK/Sources/MastodonUI/View/Content/NewsView.swift

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Swift
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//
// NewsView.swift
//
//
// Created by MainasuK on 2022-4-13.
//
import UIKit
import Combine
import MastodonAsset
public final class NewsView: UIView {
static let imageViewWidth: CGFloat = 132
var disposeBag = Set<AnyCancellable>()
let container = UIStackView()
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let providerFaviconImageView: UIImageView = {
let imageView = UIImageView()
imageView.contentMode = .scaleAspectFit
imageView.layer.masksToBounds = true
imageView.layer.cornerRadius = 2
imageView.layer.cornerCurve = .continuous
return imageView
}()
let providerNameLabel: UILabel = {
let label = UILabel()
label.font = UIFontMetrics(forTextStyle: .footnote).scaledFont(for: .systemFont(ofSize: 13, weight: .semibold))
label.textColor = Asset.Colors.Label.primary.color
return label
}()
let headlineLabel: UILabel = {
let label = UILabel()
label.font = UIFontMetrics(forTextStyle: .headline).scaledFont(for: .systemFont(ofSize: 17, weight: .semibold))
label.textColor = Asset.Colors.Label.primary.color
label.numberOfLines = 0
return label
}()
let footnoteLabel: UILabel = {
let label = UILabel()
label.font = UIFontMetrics(forTextStyle: .caption1).scaledFont(for: .systemFont(ofSize: 12, weight: .medium))
label.textColor = Asset.Colors.Label.secondary.color
return label
}()
let imageView = MediaView()
// let imageView = UIImageView()
// var imageViewMediaConfiguration: MediaView.Configuration?
public func prepareForReuse() {
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providerFaviconImageView.tag = (0..<Int.max).randomElement() ?? -1
imageView.prepareForReuse()
disposeBag.removeAll()
}
override init(frame: CGRect) {
super.init(frame: frame)
_init()
}
required init?(coder: NSCoder) {
super.init(coder: coder)
_init()
}
}
extension NewsView {
private func _init() {
// container: H - [ textContainer | imageView ]
container.distribution = .fill
container.axis = .horizontal
container.spacing = 8
container.translatesAutoresizingMaskIntoConstraints = false
addSubview(container)
container.pinToParent()
// textContainer: V - [ providerContainer | headlineLabel | (spacer) | footnoteLabel ]
let textContainer = UIStackView()
textContainer.axis = .vertical
textContainer.spacing = 4
container.addArrangedSubview(textContainer)
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// providerContainer: H - [ providerFaviconImageView | providerNameLabel | (spacer) ]
let providerContainer = UIStackView()
providerContainer.axis = .horizontal
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providerContainer.spacing = 4
textContainer.addArrangedSubview(providerContainer)
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providerFaviconImageView.translatesAutoresizingMaskIntoConstraints = false
providerContainer.addArrangedSubview(providerFaviconImageView)
providerContainer.addArrangedSubview(providerNameLabel)
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NSLayoutConstraint.activate([
providerFaviconImageView.heightAnchor.constraint(equalTo: providerNameLabel.heightAnchor, multiplier: 1.0).priority(.required - 10),
providerFaviconImageView.widthAnchor.constraint(equalTo: providerNameLabel.heightAnchor, multiplier: 1.0).priority(.required - 10),
])
// low priority for intrinsic size hugging
providerFaviconImageView.setContentHuggingPriority(.defaultLow - 10, for: .vertical)
providerFaviconImageView.setContentHuggingPriority(.defaultLow - 10, for: .horizontal)
// high priority but lower then layout constraint for size compression
providerFaviconImageView.setContentCompressionResistancePriority(.required - 11, for: .vertical)
providerFaviconImageView.setContentCompressionResistancePriority(.required - 11, for: .horizontal)
providerNameLabel.setContentCompressionResistancePriority(.required - 1, for: .vertical)
providerNameLabel.setContentHuggingPriority(.required - 1, for: .vertical)
// headlineLabel
textContainer.addArrangedSubview(headlineLabel)
let spacer = UIView()
spacer.translatesAutoresizingMaskIntoConstraints = false
textContainer.addArrangedSubview(spacer)
NSLayoutConstraint.activate([
spacer.heightAnchor.constraint(equalToConstant: 24).priority(.required - 1),
])
// footnoteLabel
textContainer.addArrangedSubview(footnoteLabel)
// imageView
imageView.translatesAutoresizingMaskIntoConstraints = false
container.addArrangedSubview(imageView)
NSLayoutConstraint.activate([
imageView.widthAnchor.constraint(equalToConstant: 132).priority(.required - 1),
])
imageView.setContentHuggingPriority(.defaultLow - 100, for: .vertical)
imageView.setContentCompressionResistancePriority(.defaultLow - 100, for: .vertical)
imageView.imageView.setContentHuggingPriority(.defaultLow - 100, for: .vertical)
imageView.imageView.setContentCompressionResistancePriority(.defaultLow - 100, for: .vertical)
imageView.blurhashImageView.setContentHuggingPriority(.defaultLow - 100, for: .vertical)
imageView.blurhashImageView.setContentCompressionResistancePriority(.defaultLow - 100, for: .vertical)
imageView.isUserInteractionEnabled = false
}
}