mastodon-ios/Mastodon/Scene/Onboarding/Welcome/WelcomeViewController.swift

379 lines
17 KiB
Swift

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