379 lines
17 KiB
Swift
379 lines
17 KiB
Swift
//
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// WelcomeViewController.swift
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// Mastodon
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//
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// Created by BradGao on 2021/2/20.
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//
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import os.log
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import UIKit
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import Combine
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import MastodonAsset
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import MastodonCore
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import MastodonLocalization
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final class WelcomeViewController: UIViewController, NeedsDependency {
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let logger = Logger(subsystem: "WelcomeViewController", category: "ViewController")
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weak var context: AppContext! { willSet { precondition(!isViewLoaded) } }
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weak var coordinator: SceneCoordinator! { willSet { precondition(!isViewLoaded) } }
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var disposeBag = Set<AnyCancellable>()
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var observations = Set<NSKeyValueObservation>()
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private(set) lazy var viewModel = WelcomeViewModel(context: context)
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let welcomeIllustrationView = WelcomeIllustrationView()
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var welcomeIllustrationViewBottomAnchorLayoutConstraint: NSLayoutConstraint?
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private(set) lazy var dismissBarButtonItem = UIBarButtonItem(barButtonSystemItem: .close, target: self, action: #selector(WelcomeViewController.dismissBarButtonItemDidPressed(_:)))
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private(set) lazy var logoImageView: UIImageView = {
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let image = Asset.Scene.Welcome.mastodonLogo.image
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let imageView = UIImageView(image: image)
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imageView.translatesAutoresizingMaskIntoConstraints = false
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return imageView
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}()
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private(set) lazy var sloganLabel: UILabel = {
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let label = UILabel()
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label.font = UIFontMetrics(forTextStyle: .largeTitle).scaledFont(for: .systemFont(ofSize: 34, weight: .bold))
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label.textColor = Asset.Colors.Label.primary.color
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label.text = L10n.Scene.Welcome.slogan
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label.adjustsFontForContentSizeCategory = true
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label.translatesAutoresizingMaskIntoConstraints = false
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label.numberOfLines = 0
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return label
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}()
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let buttonContainer = UIStackView()
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private(set) lazy var signUpButton: PrimaryActionButton = {
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let button = PrimaryActionButton()
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button.adjustsBackgroundImageWhenUserInterfaceStyleChanges = false
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button.contentEdgeInsets = WelcomeViewController.actionButtonPadding
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button.titleLabel?.adjustsFontForContentSizeCategory = true
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button.titleLabel?.font = UIFontMetrics(forTextStyle: .headline).scaledFont(for: .systemFont(ofSize: 17, weight: .semibold))
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button.setTitle(L10n.Common.Controls.Actions.signUp, for: .normal)
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let backgroundImageColor: UIColor = .white
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let backgroundImageHighlightedColor: UIColor = UIColor(white: 0.8, alpha: 1.0)
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button.setBackgroundImage(.placeholder(color: backgroundImageColor), for: .normal)
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button.setBackgroundImage(.placeholder(color: backgroundImageHighlightedColor), for: .highlighted)
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button.setTitleColor(.black, for: .normal)
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return button
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}()
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let signUpButtonShadowView = UIView()
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private(set) lazy var signInButton: PrimaryActionButton = {
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let button = PrimaryActionButton()
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button.adjustsBackgroundImageWhenUserInterfaceStyleChanges = false
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button.contentEdgeInsets = WelcomeViewController.actionButtonPadding
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button.titleLabel?.adjustsFontForContentSizeCategory = true
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button.titleLabel?.font = UIFontMetrics(forTextStyle: .headline).scaledFont(for: .systemFont(ofSize: 17, weight: .semibold))
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button.setTitle(L10n.Scene.Welcome.logIn, for: .normal)
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let backgroundImageColor = Asset.Scene.Welcome.signInButtonBackground.color
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let backgroundImageHighlightedColor = Asset.Scene.Welcome.signInButtonBackground.color.withAlphaComponent(0.8)
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button.setBackgroundImage(.placeholder(color: backgroundImageColor), for: .normal)
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button.setBackgroundImage(.placeholder(color: backgroundImageHighlightedColor), for: .highlighted)
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let titleColor: UIColor = UIColor.white.withAlphaComponent(0.9)
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button.setTitleColor(titleColor, for: .normal)
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return button
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}()
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let signInButtonShadowView = UIView()
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deinit {
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os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s", ((#file as NSString).lastPathComponent), #line, #function)
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}
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}
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extension WelcomeViewController {
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override func viewDidLoad() {
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super.viewDidLoad()
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definesPresentationContext = true
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preferredContentSize = CGSize(width: 547, height: 678)
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navigationController?.navigationBar.prefersLargeTitles = true
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navigationItem.largeTitleDisplayMode = .never
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view.overrideUserInterfaceStyle = .light
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setupOnboardingAppearance()
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setupIllustrationLayout()
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buttonContainer.axis = .vertical
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buttonContainer.spacing = 12
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buttonContainer.isLayoutMarginsRelativeArrangement = true
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buttonContainer.translatesAutoresizingMaskIntoConstraints = false
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view.addSubview(buttonContainer)
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NSLayoutConstraint.activate([
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buttonContainer.leadingAnchor.constraint(equalTo: view.readableContentGuide.leadingAnchor),
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buttonContainer.trailingAnchor.constraint(equalTo: view.readableContentGuide.trailingAnchor),
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view.layoutMarginsGuide.bottomAnchor.constraint(equalTo: buttonContainer.bottomAnchor),
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])
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signUpButton.translatesAutoresizingMaskIntoConstraints = false
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buttonContainer.addArrangedSubview(signUpButton)
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NSLayoutConstraint.activate([
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signUpButton.heightAnchor.constraint(greaterThanOrEqualToConstant: WelcomeViewController.actionButtonHeight).priority(.required - 1),
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])
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signInButton.translatesAutoresizingMaskIntoConstraints = false
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buttonContainer.addArrangedSubview(signInButton)
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NSLayoutConstraint.activate([
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signInButton.heightAnchor.constraint(greaterThanOrEqualToConstant: WelcomeViewController.actionButtonHeight).priority(.required - 1),
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])
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signUpButtonShadowView.translatesAutoresizingMaskIntoConstraints = false
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buttonContainer.addSubview(signUpButtonShadowView)
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buttonContainer.sendSubviewToBack(signUpButtonShadowView)
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signUpButtonShadowView.pinTo(to: signUpButton)
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signInButtonShadowView.translatesAutoresizingMaskIntoConstraints = false
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buttonContainer.addSubview(signInButtonShadowView)
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buttonContainer.sendSubviewToBack(signInButtonShadowView)
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signInButtonShadowView.pinTo(to: signInButton)
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signUpButton.addTarget(self, action: #selector(signUpButtonDidClicked(_:)), for: .touchUpInside)
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signInButton.addTarget(self, action: #selector(signInButtonDidClicked(_:)), for: .touchUpInside)
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viewModel.$needsShowDismissEntry
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.receive(on: DispatchQueue.main)
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.sink { [weak self] needsShowDismissEntry in
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guard let self = self else { return }
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self.navigationItem.leftBarButtonItem = needsShowDismissEntry ? self.dismissBarButtonItem : nil
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}
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.store(in: &disposeBag)
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}
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override func viewDidLayoutSubviews() {
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super.viewDidLayoutSubviews()
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setupButtonShadowView()
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}
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override func viewSafeAreaInsetsDidChange() {
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super.viewSafeAreaInsetsDidChange()
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var overlap: CGFloat = 5
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// shift illustration down for non-notch phone
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if view.safeAreaInsets.bottom == 0 {
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overlap += 56
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}
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welcomeIllustrationViewBottomAnchorLayoutConstraint?.constant = overlap
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}
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override func traitCollectionDidChange(_ previousTraitCollection: UITraitCollection?) {
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super.traitCollectionDidChange(previousTraitCollection)
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view.layoutIfNeeded()
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setupIllustrationLayout()
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setupButtonShadowView()
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}
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}
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extension WelcomeViewController {
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private func setupButtonShadowView() {
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signUpButtonShadowView.layer.setupShadow(
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color: .black,
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alpha: 0.25,
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x: 0,
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y: 1,
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blur: 2,
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spread: 0,
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roundedRect: signUpButtonShadowView.bounds,
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byRoundingCorners: .allCorners,
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cornerRadii: CGSize(width: 10, height: 10)
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)
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signInButtonShadowView.layer.setupShadow(
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color: .black,
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alpha: 0.25,
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x: 0,
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y: 1,
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blur: 2,
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spread: 0,
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roundedRect: signInButtonShadowView.bounds,
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byRoundingCorners: .allCorners,
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cornerRadii: CGSize(width: 10, height: 10)
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)
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}
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private func updateButtonContainerLayoutMargins(traitCollection: UITraitCollection) {
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switch traitCollection.userInterfaceIdiom {
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case .phone:
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buttonContainer.layoutMargins = UIEdgeInsets(
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top: 0,
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left: WelcomeViewController.actionButtonMargin,
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bottom: WelcomeViewController.viewBottomPaddingHeight,
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right: WelcomeViewController.actionButtonMargin
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)
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default:
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let margin = traitCollection.horizontalSizeClass == .regular ? WelcomeViewController.actionButtonMarginExtend : WelcomeViewController.actionButtonMargin
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buttonContainer.layoutMargins = UIEdgeInsets(
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top: 0,
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left: margin,
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bottom: WelcomeViewController.viewBottomPaddingHeightExtend,
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right: margin
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)
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}
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}
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private func setupIllustrationLayout() {
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welcomeIllustrationView.layout = {
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switch traitCollection.userInterfaceIdiom {
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case .phone:
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return .compact
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default:
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return .regular
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}
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}()
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// set logo
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if logoImageView.superview == nil {
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view.addSubview(logoImageView)
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NSLayoutConstraint.activate([
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logoImageView.topAnchor.constraint(equalTo: view.layoutMarginsGuide.topAnchor),
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logoImageView.leadingAnchor.constraint(equalTo: view.readableContentGuide.leadingAnchor, constant: 35),
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view.readableContentGuide.trailingAnchor.constraint(equalTo: logoImageView.trailingAnchor, constant: 35),
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logoImageView.heightAnchor.constraint(equalTo: logoImageView.widthAnchor, multiplier: 75.0/269.0),
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])
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logoImageView.setContentHuggingPriority(.defaultHigh, for: .vertical)
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}
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// set illustration
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guard welcomeIllustrationView.superview == nil else {
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return
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}
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welcomeIllustrationView.contentMode = .scaleAspectFit
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welcomeIllustrationView.translatesAutoresizingMaskIntoConstraints = false
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welcomeIllustrationViewBottomAnchorLayoutConstraint = welcomeIllustrationView.bottomAnchor.constraint(equalTo: view.bottomAnchor, constant: 5)
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view.addSubview(welcomeIllustrationView)
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NSLayoutConstraint.activate([
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view.leftAnchor.constraint(equalTo: welcomeIllustrationView.leftAnchor, constant: 15),
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welcomeIllustrationView.rightAnchor.constraint(equalTo: view.rightAnchor, constant: 15),
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welcomeIllustrationViewBottomAnchorLayoutConstraint!.priority(.required - 1),
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])
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welcomeIllustrationView.cloudBaseImageView.addMotionEffect(
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UIInterpolatingMotionEffect.motionEffect(minX: -5, maxX: 5, minY: -5, maxY: 5)
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)
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welcomeIllustrationView.rightHillImageView.addMotionEffect(
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UIInterpolatingMotionEffect.motionEffect(minX: -15, maxX: 25, minY: -10, maxY: 10)
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)
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welcomeIllustrationView.leftHillImageView.addMotionEffect(
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UIInterpolatingMotionEffect.motionEffect(minX: -25, maxX: 15, minY: -15, maxY: 15)
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)
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welcomeIllustrationView.centerHillImageView.addMotionEffect(
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UIInterpolatingMotionEffect.motionEffect(minX: -14, maxX: 14, minY: -5, maxY: 25)
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)
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let topPaddingView = UIView()
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topPaddingView.translatesAutoresizingMaskIntoConstraints = false
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view.addSubview(topPaddingView)
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NSLayoutConstraint.activate([
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topPaddingView.topAnchor.constraint(equalTo: logoImageView.bottomAnchor),
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topPaddingView.leadingAnchor.constraint(equalTo: logoImageView.leadingAnchor),
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topPaddingView.trailingAnchor.constraint(equalTo: logoImageView.trailingAnchor),
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])
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welcomeIllustrationView.elephantOnAirplaneWithContrailImageView.translatesAutoresizingMaskIntoConstraints = false
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view.addSubview(welcomeIllustrationView.elephantOnAirplaneWithContrailImageView)
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NSLayoutConstraint.activate([
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view.leftAnchor.constraint(equalTo: welcomeIllustrationView.elephantOnAirplaneWithContrailImageView.leftAnchor, constant: 12), // add 12pt bleeding
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welcomeIllustrationView.elephantOnAirplaneWithContrailImageView.topAnchor.constraint(equalTo: topPaddingView.bottomAnchor),
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// make a little bit large
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welcomeIllustrationView.elephantOnAirplaneWithContrailImageView.widthAnchor.constraint(equalTo: view.widthAnchor, multiplier: 0.84),
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welcomeIllustrationView.elephantOnAirplaneWithContrailImageView.heightAnchor.constraint(equalTo: welcomeIllustrationView.elephantOnAirplaneWithContrailImageView.widthAnchor, multiplier: 105.0/318.0),
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])
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let bottomPaddingView = UIView()
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bottomPaddingView.translatesAutoresizingMaskIntoConstraints = false
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view.addSubview(bottomPaddingView)
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NSLayoutConstraint.activate([
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bottomPaddingView.topAnchor.constraint(equalTo: welcomeIllustrationView.elephantOnAirplaneWithContrailImageView.bottomAnchor),
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bottomPaddingView.leadingAnchor.constraint(equalTo: logoImageView.leadingAnchor),
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bottomPaddingView.trailingAnchor.constraint(equalTo: logoImageView.trailingAnchor),
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bottomPaddingView.bottomAnchor.constraint(equalTo: view.centerYAnchor),
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bottomPaddingView.heightAnchor.constraint(equalTo: topPaddingView.heightAnchor, multiplier: 4),
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])
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welcomeIllustrationView.elephantOnAirplaneWithContrailImageView.addMotionEffect(
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UIInterpolatingMotionEffect.motionEffect(minX: -20, maxX: 12, minY: -20, maxY: 12) // maxX should not larger then the bleeding (12pt)
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)
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view.bringSubviewToFront(logoImageView)
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view.bringSubviewToFront(sloganLabel)
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}
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}
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extension WelcomeViewController {
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@objc
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private func signUpButtonDidClicked(_ sender: UIButton) {
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_ = coordinator.present(scene: .mastodonPickServer(viewMode: MastodonPickServerViewModel(context: context)), from: self, transition: .show)
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}
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@objc
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private func signInButtonDidClicked(_ sender: UIButton) {
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_ = coordinator.present(scene: .mastodonLogin, from: self, transition: .show)
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}
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@objc
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private func dismissBarButtonItemDidPressed(_ sender: UIButton) {
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dismiss(animated: true, completion: nil)
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}
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}
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// MARK: - OnboardingViewControllerAppearance
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extension WelcomeViewController: OnboardingViewControllerAppearance {
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func setupNavigationBarAppearance() {
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// always transparent
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let barAppearance = UINavigationBarAppearance()
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barAppearance.configureWithTransparentBackground()
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navigationItem.standardAppearance = barAppearance
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navigationItem.compactAppearance = barAppearance
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navigationItem.scrollEdgeAppearance = barAppearance
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navigationItem.compactScrollEdgeAppearance = barAppearance
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}
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}
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// MARK: - UIAdaptivePresentationControllerDelegate
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extension WelcomeViewController: UIAdaptivePresentationControllerDelegate {
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func adaptivePresentationStyle(for controller: UIPresentationController, traitCollection: UITraitCollection) -> UIModalPresentationStyle {
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logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public)")
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// update button layout
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updateButtonContainerLayoutMargins(traitCollection: traitCollection)
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let navigationController = navigationController as? OnboardingNavigationController
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switch traitCollection.userInterfaceIdiom {
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case .phone:
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navigationController?.gradientBorderView.isHidden = true
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// make underneath view controller alive to fix layout issue due to view life cycle
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return .fullScreen
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default:
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switch traitCollection.horizontalSizeClass {
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case .compact:
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navigationController?.gradientBorderView.isHidden = true
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return .fullScreen
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default:
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navigationController?.gradientBorderView.isHidden = false
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return .formSheet
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}
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}
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}
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func presentationController(_ controller: UIPresentationController, viewControllerForAdaptivePresentationStyle style: UIModalPresentationStyle) -> UIViewController? {
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return nil
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}
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func presentationControllerShouldDismiss(_ presentationController: UIPresentationController) -> Bool {
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return false
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}
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}
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