79 lines
2.6 KiB
Swift
79 lines
2.6 KiB
Swift
//
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// AltViewController.swift
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// Mastodon
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//
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// Created by Jed Fox on 2022-11-26.
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//
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import SwiftUI
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class AltViewController: UIViewController {
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private var alt: String
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let label = UITextView()
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init(alt: String, sourceView: UIView?) {
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self.alt = alt
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super.init(nibName: nil, bundle: nil)
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self.modalPresentationStyle = .popover
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self.popoverPresentationController?.delegate = self
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self.popoverPresentationController?.permittedArrowDirections = .up
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self.popoverPresentationController?.sourceView = sourceView
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self.overrideUserInterfaceStyle = .dark
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}
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@MainActor required dynamic init?(coder aDecoder: 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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label.translatesAutoresizingMaskIntoConstraints = false
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label.textContainer.maximumNumberOfLines = 0
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label.textContainer.lineBreakMode = .byWordWrapping
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label.textContainerInset = UIEdgeInsets(
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top: 8,
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left: 0,
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bottom: -label.textContainer.lineFragmentPadding,
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right: 0
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)
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label.font = .preferredFont(forTextStyle: .callout)
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label.isScrollEnabled = false
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label.backgroundColor = .clear
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label.isOpaque = false
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label.isEditable = false
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label.tintColor = .white
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label.text = alt
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view.translatesAutoresizingMaskIntoConstraints = false
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view.addSubview(label)
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NSLayoutConstraint.activate(
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NSLayoutConstraint.constraints(withVisualFormat: "V:|-[label]-|", metrics: nil, views: ["label": label])
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)
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NSLayoutConstraint.activate(
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NSLayoutConstraint.constraints(withVisualFormat: "H:|-(8)-[label]-(8)-|", metrics: nil, views: ["label": label])
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)
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NSLayoutConstraint.activate([
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label.widthAnchor.constraint(lessThanOrEqualToConstant: 400),
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])
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}
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override func viewDidLayoutSubviews() {
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super.viewDidLayoutSubviews()
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UIView.performWithoutAnimation {
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preferredContentSize = CGSize(
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width: label.intrinsicContentSize.width + 16,
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height: label.intrinsicContentSize.height + view.layoutMargins.top + view.layoutMargins.bottom
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)
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}
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}
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}
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// MARK: UIPopoverPresentationControllerDelegate
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extension AltViewController: UIPopoverPresentationControllerDelegate {
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func adaptivePresentationStyle(for controller: UIPresentationController, traitCollection: UITraitCollection) -> UIModalPresentationStyle {
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.none
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}
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}
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