macos: cycle through our icons in the About view

Clicking on the icon immediately advances to the next one. Hovering on
the icon pauses the automatic cycling, and the "help" tooltip displays
the icon's configuration name (for `macos-icon`).

macos/Ghostty.xcodeproj/project.pbxproj

@@ -72,6 +72,7 @@
 				Features/About/About.xib,
 				Features/About/AboutController.swift,
 				Features/About/AboutView.swift,
+				Features/About/CyclingIconView.swift,
 				"Features/App Intents/CloseTerminalIntent.swift",
 				"Features/App Intents/CommandPaletteIntent.swift",
 				"Features/App Intents/Entities/CommandEntity.swift",

macos/Sources/App/macOS/AppDelegate.swift

@@ -946,33 +946,8 @@ class AppDelegate: NSObject,
         var appIconName: String? = config.macosIcon.rawValue
 
         switch (config.macosIcon) {
-        case .official:
-            // Discard saved icon name
-            appIconName = nil
-            break
-        case .blueprint:
-            appIcon = NSImage(named: "BlueprintImage")!
-
-        case .chalkboard:
-            appIcon = NSImage(named: "ChalkboardImage")!
-
-        case .glass:
-            appIcon = NSImage(named: "GlassImage")!
-
-        case .holographic:
-            appIcon = NSImage(named: "HolographicImage")!
-
-        case .microchip:
-            appIcon = NSImage(named: "MicrochipImage")!
-
-        case .paper:
-            appIcon = NSImage(named: "PaperImage")!
-
-        case .retro:
-            appIcon = NSImage(named: "RetroImage")!
-
-        case .xray:
-            appIcon = NSImage(named: "XrayImage")!
+        case let icon where icon.assetName != nil:
+            appIcon = NSImage(named: icon.assetName!)!
 
         case .custom:
             if let userIcon = NSImage(contentsOfFile: config.macosCustomIcon) {
@@ -982,6 +957,7 @@ class AppDelegate: NSObject,
                 appIcon = nil // Revert back to official icon if invalid location
                 appIconName = nil // Discard saved icon name
             }
+
         case .customStyle:
             // Discard saved icon name
             // if no valid colours were found
@@ -997,6 +973,10 @@ class AppDelegate: NSObject,
             let colorStrings = ([ghostColor] + screenColors).compactMap(\.hexString)
             appIconName = (colorStrings + [config.macosIconFrame.rawValue])
                 .joined(separator: "_")
+
+        default:
+            // Discard saved icon name
+            appIconName = nil
         }
 
         // Only change the icon if it has actually changed from the current one,

macos/Sources/Features/About/AboutView.swift

@@ -44,10 +44,7 @@ struct AboutView: View {
 
     var body: some View {
         VStack(alignment: .center) {
-            ghosttyIconImage()
-                .resizable()
-                .aspectRatio(contentMode: .fit)
-                .frame(height: 128)
+            CyclingIconView()
 
             VStack(alignment: .center, spacing: 32) {
                 VStack(alignment: .center, spacing: 8) {

macos/Sources/Features/About/CyclingIconView.swift

@@ -0,0 +1,62 @@
+import SwiftUI
+import GhosttyKit
+
+/// A view that cycles through Ghostty's official icon variants.
+struct CyclingIconView: View {
+    @State private var currentIcon: Ghostty.MacOSIcon = .official
+    @State private var isHovering: Bool = false
+
+    private let icons: [Ghostty.MacOSIcon] = [
+        .official,
+        .blueprint,
+        .chalkboard,
+        .microchip,
+        .glass,
+        .holographic,
+        .paper,
+        .retro,
+        .xray,
+    ]
+    private let timerPublisher = Timer.publish(every: 3, on: .main, in: .common)
+
+    var body: some View {
+        ZStack {
+            iconView(for: currentIcon)
+                .id(currentIcon)
+        }
+        .animation(.easeInOut(duration: 0.5), value: currentIcon)
+        .frame(height: 128)
+        .onReceive(timerPublisher.autoconnect()) { _ in
+            if !isHovering {
+                advanceToNextIcon()
+            }
+        }
+        .onHover { hovering in
+            isHovering = hovering
+        }
+        .onTapGesture {
+            advanceToNextIcon()
+        }
+        .help("macos-icon = \(currentIcon.rawValue)")
+        .accessibilityLabel("Ghostty Application Icon")
+        .accessibilityHint("Click to cycle through icon variants")
+    }
+
+    @ViewBuilder
+    private func iconView(for icon: Ghostty.MacOSIcon) -> some View {
+        let iconImage: Image = switch icon.assetName {
+        case let assetName?: Image(assetName)
+        case nil: ghosttyIconImage()
+        }
+
+        iconImage
+            .resizable()
+            .aspectRatio(contentMode: .fit)
+    }
+
+    private func advanceToNextIcon() {
+        let currentIndex = icons.firstIndex(of: currentIcon) ?? 0
+        let nextIndex = icons.indexWrapping(after: currentIndex)
+        currentIcon = icons[nextIndex]
+    }
+}

macos/Sources/Ghostty/Package.swift

@@ -330,6 +330,22 @@ extension Ghostty {
         case xray
         case custom
         case customStyle = "custom-style"
+
+        /// Bundled asset name for built-in icons
+        var assetName: String? {
+            switch self {
+            case .official: return nil
+            case .blueprint: return "BlueprintImage"
+            case .chalkboard: return "ChalkboardImage"
+            case .microchip: return "MicrochipImage"
+            case .glass: return "GlassImage"
+            case .holographic: return "HolographicImage"
+            case .paper: return "PaperImage"
+            case .retro: return "RetroImage"
+            case .xray: return "XrayImage"
+            case .custom, .customStyle: return nil
+            }
+        }
     }
 
     /// macos-icon-frame