scrollable subtitle for conversation screen

Session/Conversations/Views & Modals/ConversationTitleView.swift

@@ -31,7 +31,7 @@ final class ConversationTitleView: UIView {
     
     private lazy var pagedScrollView: PagedScrollView = {
         let result = PagedScrollView()
-        
+        result.set(.width, to: 320)
         return result
     }()
 
@@ -44,6 +44,24 @@ final class ConversationTitleView: UIView {
         return result
     }()
     
+    private lazy var userCountLabel: UILabel = {
+        let result: UILabel = UILabel()
+        result.font = .systemFont(ofSize: 13)
+        result.themeTextColor = .textPrimary
+        result.lineBreakMode = .byTruncatingTail
+        
+        return result
+    }()
+    
+    private lazy var notificationSettingsLabel: UILabel = {
+        let result: UILabel = UILabel()
+        result.font = .systemFont(ofSize: 13)
+        result.themeTextColor = .textPrimary
+        result.lineBreakMode = .byTruncatingTail
+        
+        return result
+    }()
+    
     private lazy var disappearingMessageSettingLabel: UILabel = {
         let result: UILabel = UILabel()
         result.font = .systemFont(ofSize: 13)
@@ -67,12 +85,14 @@ final class ConversationTitleView: UIView {
     }()
     
     private lazy var stackView: UIStackView = {
-        let result = UIStackView(arrangedSubviews: [ titleLabel, subtitleLabel, disappearingMessageSettingsStackView ])
+        let result = UIStackView(arrangedSubviews: [ titleLabel, pagedScrollView ])
         result.axis = .vertical
         result.alignment = .center
         
         return result
     }()
+    
+    private var slides: [UIView] = []
 
     // MARK: - Initialization
     
@@ -111,6 +131,8 @@ final class ConversationTitleView: UIView {
     override func layoutSubviews() {
         super.layoutSubviews()
         
+        self.pagedScrollView.update(with: slides, slideSize: CGSize(width: bounds.size.width, height: 20), shouldAutoScroll: false)
+        
         // There is an annoying issue where pushing seems to update the width of this
         // view resulting in the content shifting to the right during
         guard self.oldSize != .zero, self.oldSize != bounds.size else {
@@ -159,11 +181,13 @@ final class ConversationTitleView: UIView {
             )
         )
         
-        ThemeManager.onThemeChange(observer: self.subtitleLabel) { [weak subtitleLabel] theme, _ in
+        ThemeManager.onThemeChange(observer: self.subtitleLabel) { [weak self] theme, _ in
             guard let textPrimary: UIColor = theme.color(for: .textPrimary) else { return }
             
-            guard Date().timeIntervalSince1970 > (mutedUntilTimestamp ?? 0) else {
-                subtitleLabel?.attributedText = NSAttributedString(
+            var slides: [UIView?] = []
+            
+            if Date().timeIntervalSince1970 <= (mutedUntilTimestamp ?? 0) {
+                self?.notificationSettingsLabel.attributedText = NSAttributedString(
                     string: "\u{e067}  ",
                     attributes: [
                         .font: UIFont.ows_elegantIconsFont(10),
@@ -171,9 +195,9 @@ final class ConversationTitleView: UIView {
                     ]
                 )
                 .appending(string: "Muted")
-                return
-            }
-            guard !onlyNotifyForMentions else {
+                self?.notificationSettingsLabel.isHidden = false
+                slides.append(self?.notificationSettingsLabel)
+            } else if onlyNotifyForMentions{
                 let imageAttachment = NSTextAttachment()
                 imageAttachment.image = UIImage(named: "NotifyMentions.png")?.withTint(textPrimary)
                 imageAttachment.bounds = CGRect(
@@ -183,26 +207,32 @@ final class ConversationTitleView: UIView {
                     height: Values.smallFontSize
                 )
                 
-                subtitleLabel?.attributedText = NSAttributedString(attachment: imageAttachment)
+                self?.notificationSettingsLabel.attributedText = NSAttributedString(attachment: imageAttachment)
                     .appending(string: "  ")
                     .appending(string: "view_conversation_title_notify_for_mentions_only".localized())
-                return
+                self?.notificationSettingsLabel.isHidden = false
+                slides.append(self?.notificationSettingsLabel)
             }
-            guard let userCount: Int = userCount else { return }
             
-            switch threadVariant {
-                case .contact: break
-                    
-                case .closedGroup:
-                    subtitleLabel?.attributedText = NSAttributedString(
-                        string: "\(userCount) member\(userCount == 1 ? "" : "s")"
-                    )
-                    
-                case .openGroup:
-                    subtitleLabel?.attributedText = NSAttributedString(
-                        string: "\(userCount) active member\(userCount == 1 ? "" : "s")"
-                    )
+            if let userCount: Int = userCount {
+                switch threadVariant {
+                    case .contact: break
+                        
+                    case .closedGroup:
+                        self?.userCountLabel.attributedText = NSAttributedString(
+                            string: "\(userCount) member\(userCount == 1 ? "" : "s")"
+                        )
+                        
+                    case .openGroup:
+                        self?.userCountLabel.attributedText = NSAttributedString(
+                            string: "\(userCount) active member\(userCount == 1 ? "" : "s")"
+                        )
+                }
+                slides.append(self?.userCountLabel)
             }
+            
+            // TODO: Disappearing message settings
+            self?.slides = slides.compactMap{ $0 }
         }
         
         // Contact threads also have the call button to compensate for

Session/Conversations/Views & Modals/PagedScrollView.swift

@@ -4,12 +4,15 @@ import UIKit
 import SessionUIKit
 
 final class PagedScrollView: UIView {
-    private static let autoScrollingTimeInterval: TimeInterval = 3
+    private static let autoScrollingTimeInterval: TimeInterval = 10
     private var slides: [UIView] = []
     private var slideSize: CGSize = .zero
     private var shouldAutoScroll: Bool = false
     private var timer: Timer?
     
+    private lazy var contentWidth = stackView.set(.width, to: 0)
+    private lazy var contentHeight = stackView.set(.height, to: 0)
+    
     // MARK: - UI Components
     
     private lazy var scrollView: UIScrollView = {
@@ -30,7 +33,11 @@ final class PagedScrollView: UIView {
     
     private lazy var pageControl: UIPageControl = {
         let result = UIPageControl(frame: .zero)
-        
+        result.currentPageIndicatorTintColor = .black
+        result.pageIndicatorTintColor = .gray
+        result.themeTintColor = .textPrimary
+        result.set(.height, to: 5)
+        result.transform = CGAffineTransform(scaleX: 0.5, y: 0.5)
         return result
     }()
     
@@ -57,6 +64,11 @@ final class PagedScrollView: UIView {
         pageControl.currentPage = 0
         pageControl.isHidden = (slides.count == 1)
         
+        let contentSize = CGSize(width: slideSize.width * CGFloat(slides.count), height: slideSize.height)
+        scrollView.contentSize = contentSize
+        contentWidth.constant = contentSize.width
+        contentHeight.constant = contentSize.height
+        
         stackView.arrangedSubviews.forEach { $0.removeFromSuperview() }
         
         self.slides.forEach {
@@ -79,15 +91,15 @@ final class PagedScrollView: UIView {
         
         addSubview(pageControl)
         pageControl.center(.horizontal, in: self)
-        pageControl.pin(.bottom, to: .bottom, of: self)
+        pageControl.pin(.bottom, to: .bottom, of: self, withInset: -1)
         
         scrollView.addSubview(stackView)
-        stackView.pin([ UIView.HorizontalEdge.leading, UIView.VerticalEdge.top ], to: scrollView)
     }
     
     private func startScrolling() {
         timer?.invalidate()
         timer = Timer.scheduledTimerOnMainThread(withTimeInterval: Self.autoScrollingTimeInterval, repeats: true) { _ in
+            guard self.slides.count != 0 else { return }
             let targetPage = (self.pageControl.currentPage + 1) % self.slides.count
             self.scrollView.scrollRectToVisible(
                 CGRect(