72 lines
2.6 KiB
Swift
72 lines
2.6 KiB
Swift
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//
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// DuckedPlaceholderView.swift
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// Duckable
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//
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// Created by Shadowfacts on 11/7/22.
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//
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import UIKit
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@available(iOS 16.0, *)
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class DuckedPlaceholderViewController: UIViewController {
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private unowned let owner: DuckableContainerViewController
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private let navBar = UINavigationBar()
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var topConstraint: NSLayoutConstraint!
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init(for duckableViewController: DuckableViewController, owner: DuckableContainerViewController) {
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self.owner = owner
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super.init(nibName: nil, bundle: nil)
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let item = UINavigationItem()
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item.title = duckableViewController.navigationItem.title
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item.titleView = duckableViewController.navigationItem.titleView
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navBar.setItems([item], animated: false)
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}
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required init?(coder: NSCoder) {
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fatalError()
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}
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override func viewDidLoad() {
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super.viewDidLoad()
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setBackgroundColor()
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view.layer.cornerRadius = duckedCornerRadius
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view.layer.maskedCorners = [.layerMinXMinYCorner, .layerMaxXMinYCorner]
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view.layer.shadowColor = UIColor.black.cgColor
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view.layer.shadowOpacity = 0.05
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view.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(placeholderTapped)))
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let appearance = UINavigationBarAppearance()
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appearance.configureWithTransparentBackground()
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navBar.standardAppearance = appearance
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navBar.isUserInteractionEnabled = false
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navBar.translatesAutoresizingMaskIntoConstraints = false
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view.addSubview(navBar)
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NSLayoutConstraint.activate([
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navBar.leadingAnchor.constraint(equalTo: view.leadingAnchor),
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navBar.trailingAnchor.constraint(equalTo: view.trailingAnchor),
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navBar.topAnchor.constraint(equalTo: view.topAnchor),
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])
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}
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override func traitCollectionDidChange(_ previousTraitCollection: UITraitCollection?) {
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super.traitCollectionDidChange(previousTraitCollection)
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setBackgroundColor()
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}
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private func setBackgroundColor() {
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// when just using .systemBackground and setting the override trait collection for the placeholder VC,
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// the color doesn't change until after the dismiss animation occurs (but only when tapping the grabber to duck, not when swiping)
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view.backgroundColor = .systemBackground.resolvedColor(with: UITraitCollection(traitsFrom: [traitCollection, UITraitCollection(userInterfaceLevel: .elevated)]))
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}
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@objc private func placeholderTapped() {
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owner.unduckViewController()
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}
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}
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