feat: show notification badges on top of app icons (closes #523)

resources/l10n/Localizable.strings

@@ -127,6 +127,9 @@
 /* No comment provided by engineer. */
 "Hidden" = "Hidden";
 
+/* No comment provided by engineer. */
+"Hide app badges:" = "Hide app badges:";
+
 /* No comment provided by engineer. */
 "Hide colored circles on mouse hover:" = "Hide colored circles on mouse hover:";
 

resources/l10n/ar.lproj/Localizable.strings

@@ -128,6 +128,9 @@
 /*No comment provided by engineer.*/
 "Hidden" = "مخفي";
 
+/*No comment provided by engineer.*/
+"Hide app badges:" = "Hide app badges:";
+
 /*No comment provided by engineer.*/
 "Hide colored circles on mouse hover:" = "Hide colored circles on mouse hover:";
 

resources/l10n/de.lproj/Localizable.strings

@@ -128,6 +128,9 @@
 /*No comment provided by engineer.*/
 "Hidden" = "Versteckt";
 
+/*No comment provided by engineer.*/
+"Hide app badges:" = "Hide app badges:";
+
 /*No comment provided by engineer.*/
 "Hide colored circles on mouse hover:" = "Bunte Kreise beim Markieren mit Maus verbergen:";
 

resources/l10n/en.lproj/Localizable.strings

@@ -128,6 +128,9 @@
 /*No comment provided by engineer.*/
 "Hidden" = "Hidden";
 
+/*No comment provided by engineer.*/
+"Hide app badges:" = "Hide app badges:";
+
 /*No comment provided by engineer.*/
 "Hide colored circles on mouse hover:" = "Hide colored circles on mouse hover:";
 

resources/l10n/es.lproj/Localizable.strings

@@ -128,6 +128,9 @@
 /*No comment provided by engineer.*/
 "Hidden" = "Ocultas";
 
+/*No comment provided by engineer.*/
+"Hide app badges:" = "Hide app badges:";
+
 /*No comment provided by engineer.*/
 "Hide colored circles on mouse hover:" = "Hide colored circles on mouse hover:";
 

resources/l10n/fi.lproj/Localizable.strings

@@ -128,6 +128,9 @@
 /*No comment provided by engineer.*/
 "Hidden" = "Piilossa";
 
+/*No comment provided by engineer.*/
+"Hide app badges:" = "Hide app badges:";
+
 /*No comment provided by engineer.*/
 "Hide colored circles on mouse hover:" = "Hide colored circles on mouse hover:";
 

resources/l10n/fr.lproj/Localizable.strings

@@ -128,6 +128,9 @@
 /*No comment provided by engineer.*/
 "Hidden" = "Cachées";
 
+/*No comment provided by engineer.*/
+"Hide app badges:" = "Hide app badges:";
+
 /*No comment provided by engineer.*/
 "Hide colored circles on mouse hover:" = "Hide colored circles on mouse hover:";
 

resources/l10n/hu.lproj/Localizable.strings

@@ -128,6 +128,9 @@
 /*No comment provided by engineer.*/
 "Hidden" = "Rejtett";
 
+/*No comment provided by engineer.*/
+"Hide app badges:" = "Hide app badges:";
+
 /*No comment provided by engineer.*/
 "Hide colored circles on mouse hover:" = "Hide colored circles on mouse hover:";
 

resources/l10n/id.lproj/Localizable.strings

@@ -128,6 +128,9 @@
 /*No comment provided by engineer.*/
 "Hidden" = "Tersembunyi";
 
+/*No comment provided by engineer.*/
+"Hide app badges:" = "Hide app badges:";
+
 /*No comment provided by engineer.*/
 "Hide colored circles on mouse hover:" = "Hide colored circles on mouse hover:";
 

resources/l10n/it.lproj/Localizable.strings

@@ -128,6 +128,9 @@
 /*No comment provided by engineer.*/
 "Hidden" = "Nascosto";
 
+/*No comment provided by engineer.*/
+"Hide app badges:" = "Hide app badges:";
+
 /*No comment provided by engineer.*/
 "Hide colored circles on mouse hover:" = "Hide colored circles on mouse hover:";
 

resources/l10n/ja.lproj/Localizable.strings

@@ -128,6 +128,9 @@
 /*No comment provided by engineer.*/
 "Hidden" = "ウィンドウをしまう";
 
+/*No comment provided by engineer.*/
+"Hide app badges:" = "Hide app badges:";
+
 /*No comment provided by engineer.*/
 "Hide colored circles on mouse hover:" = "Hide colored circles on mouse hover:";
 

resources/l10n/ko.lproj/Localizable.strings

@@ -128,6 +128,9 @@
 /*No comment provided by engineer.*/
 "Hidden" = "숨겨진 화면";
 
+/*No comment provided by engineer.*/
+"Hide app badges:" = "Hide app badges:";
+
 /*No comment provided by engineer.*/
 "Hide colored circles on mouse hover:" = "마우스를 올릴 때 색칠된 원들 숨기기:";
 

resources/l10n/lb.lproj/Localizable.strings

@@ -128,6 +128,9 @@
 /*No comment provided by engineer.*/
 "Hidden" = "Verstoppen";
 
+/*No comment provided by engineer.*/
+"Hide app badges:" = "Hide app badges:";
+
 /*No comment provided by engineer.*/
 "Hide colored circles on mouse hover:" = "Hide colored circles on mouse hover:";
 

resources/l10n/nl.lproj/Localizable.strings

@@ -128,6 +128,9 @@
 /*No comment provided by engineer.*/
 "Hidden" = "Verborgen";
 
+/*No comment provided by engineer.*/
+"Hide app badges:" = "Hide app badges:";
+
 /*No comment provided by engineer.*/
 "Hide colored circles on mouse hover:" = "Hide colored circles on mouse hover:";
 

resources/l10n/pt.lproj/Localizable.strings

@@ -128,6 +128,9 @@
 /*No comment provided by engineer.*/
 "Hidden" = "Escondido";
 
+/*No comment provided by engineer.*/
+"Hide app badges:" = "Hide app badges:";
+
 /*No comment provided by engineer.*/
 "Hide colored circles on mouse hover:" = "Esconder círculos coloridos onde o rato passar:";
 

resources/l10n/ru.lproj/Localizable.strings

@@ -128,6 +128,9 @@
 /*No comment provided by engineer.*/
 "Hidden" = "Скрытые";
 
+/*No comment provided by engineer.*/
+"Hide app badges:" = "Hide app badges:";
+
 /*No comment provided by engineer.*/
 "Hide colored circles on mouse hover:" = "Скрыть цветные круги при наведении мышью:";
 

resources/l10n/tr.lproj/Localizable.strings

@@ -128,6 +128,9 @@
 /*No comment provided by engineer.*/
 "Hidden" = "Gizli";
 
+/*No comment provided by engineer.*/
+"Hide app badges:" = "Hide app badges:";
+
 /*No comment provided by engineer.*/
 "Hide colored circles on mouse hover:" = "Hide colored circles on mouse hover:";
 

resources/l10n/zh-CN.lproj/Localizable.strings

@@ -128,6 +128,9 @@
 /*No comment provided by engineer.*/
 "Hidden" = "隐藏";
 
+/*No comment provided by engineer.*/
+"Hide app badges:" = "Hide app badges:";
+
 /*No comment provided by engineer.*/
 "Hide colored circles on mouse hover:" = "鼠标悬停时隐藏彩色圆圈：";
 

resources/l10n/zh-TW.lproj/Localizable.strings

@@ -128,6 +128,9 @@
 /*No comment provided by engineer.*/
 "Hidden" = "隱藏";
 
+/*No comment provided by engineer.*/
+"Hide app badges:" = "Hide app badges:";
+
 /*No comment provided by engineer.*/
 "Hide colored circles on mouse hover:" = "Hide colored circles on mouse hover:";
 

scripts/subset_fonticon.sh

@@ -4,4 +4,4 @@ set -exu
 
 "$(pipenv --venv)"/bin/pyftsubset resources/SF-Pro-Text-Regular-Full.otf \
   --output-file=resources/SF-Pro-Text-Regular.otf \
-  --text="􀀁􀁑􀁏􀁍􀁎􀁌􀕧􀕬􀀸􀀺􀀼􀀾􀁀􀁂􀁄􀑱􀁆􀁈􀁊􀑳􀓵􀓶􀓷􀓸􀓹􀓺􀓻􀓼􀓽􀓾􀓿􀔀􀔁􀔂􀔃􀔄􀔅􀔆􀔇􀔈􀔉􀘠􀚗􀚙􀚛􀚝􀚟􀚡􀚣􀚥􀚧􀚩􀚫􀚭􀚯􀚱􀚳􀚵􀚷􀚹􀚻"
+  --text="􀀁􀁑􀁏􀁍􀁎􀁌􀕧􀕬􀀸􀀺􀀼􀀾􀁀􀁂􀁄􀑱􀁆􀁈􀁊􀑳􀓵􀓶􀓷􀓸􀓹􀓺􀓻􀓼􀓽􀓾􀓿􀔀􀔁􀔂􀔃􀔄􀔅􀔆􀔇􀔈􀔉􀀹􀀻􀀽􀀿􀁁􀘘􀁃􀁅􀑲􀁇􀁉􀁋􀑴􀔔􀔕􀔖􀔗􀔘􀔙􀔚􀔛􀔜􀔝􀔞􀔟􀔠􀔡􀔢􀔣􀔤􀔥􀔦􀔧􀔨􀕭"

src/api-wrappers/AXUIElement.swift

@@ -116,6 +116,10 @@ extension AXUIElement {
         return try attribute(kAXParentAttribute, AXUIElement.self)
     }
 
+    func children() throws -> [AXUIElement]? {
+        return try attribute(kAXChildrenAttribute, [AXUIElement].self)
+    }
+
     func windows() throws -> [AXUIElement]? {
         return try attribute(kAXWindowsAttribute, [AXUIElement].self)
     }
@@ -140,6 +144,10 @@ extension AXUIElement {
         return try attribute(kAXSubroleAttribute, String.self)
     }
 
+    func appIsRunning() throws -> Bool? {
+        return try attribute(kAXIsApplicationRunningAttribute, Bool.self)
+    }
+
     func closeButton() throws -> AXUIElement? {
         return try attribute(kAXCloseButtonAttribute, AXUIElement.self)
     }

src/api-wrappers/PrivateApis.swift

@@ -121,8 +121,9 @@ func CGSGetWindowLevel(_ cid: CGSConnectionID, _ wid: CGWindowID, _ level: inout
 @_silgen_name("SLSRequestScreenCaptureAccess") @discardableResult
 func SLSRequestScreenCaptureAccess() -> UInt8
 
-// for some reason, this attribute is missing from AXAttributeConstants
+// for some reason, these attributes are missing from AXAttributeConstants
 let kAXFullscreenAttribute = "AXFullScreen"
+let kAXStatusLabelAttribute = "AXStatusLabel"
 
 // enables/disables a symbolic hotkeys. These are system shortcuts such as command+tab or Spotlight
 // it is possible to find all the existing hotkey IDs by using CGSGetSymbolicHotKeyValue on the first few hundred numbers

src/logic/Application.swift

@@ -7,6 +7,7 @@ class Application: NSObject {
     var axUiElement: AXUIElement?
     var axObserver: AXObserver?
     var isReallyFinishedLaunching = false
+    var dockLabel: String?
 
     static func notifications(_ app: NSRunningApplication) -> [String] {
         var n = [

src/logic/Applications.swift

@@ -73,6 +73,21 @@ class Applications {
         App.app.refreshOpenUi()
     }
 
+    static func refreshBadges() {
+        retryAxCallUntilTimeout {
+            let axDock = AXUIElementCreateApplication(Applications.list.first { $0.runningApplication.bundleIdentifier == "com.apple.dock" }!.runningApplication.processIdentifier)
+            let axList = try axDock.children()!.first { try $0.role() == "AXList" }!
+            let axAppDockItem = try axList.children()!.filter { try $0.subrole() == "AXApplicationDockItem" && ($0.appIsRunning() ?? false) }
+            try Applications.list.forEach { app in
+                if app.runningApplication.activationPolicy == .regular,
+                   let bundleId = app.runningApplication.bundleIdentifier,
+                   let url = NSWorkspace.shared.urlForApplication(withBundleIdentifier: bundleId) {
+                    app.dockLabel = try axAppDockItem.first { try $0.attribute(kAXURLAttribute, URL.self) == url }?.attribute(kAXStatusLabelAttribute, String.self)
+                }
+            }
+        }
+    }
+
     private static func isActualApplication(_ app: NSRunningApplication) -> Bool {
         return (app.activationPolicy != .prohibited || isNotXpc(app)) && notAltTab(app)
     }

src/logic/Preferences.swift

@@ -58,6 +58,7 @@ class Preferences {
         "minCellsPerRow": defaultsDependingOnScreenRatio_["minCellsPerRow"]!,
         "maxCellsPerRow": defaultsDependingOnScreenRatio_["maxCellsPerRow"]!,
         "shortcutStyle": "0",
+        "hideAppBadges": "false",
     ]
 
     // constant values
@@ -96,6 +97,7 @@ class Preferences {
     static var fadeOutAnimation: Bool { defaults.bool("fadeOutAnimation") }
     static var hideSpaceNumberLabels: Bool { defaults.bool("hideSpaceNumberLabels") }
     static var hideStatusIcons: Bool { defaults.bool("hideStatusIcons") }
+    static var hideAppBadges: Bool { defaults.bool("hideAppBadges") }
     static var startAtLogin: Bool { defaults.bool("startAtLogin") }
     static var dontShowBlacklist: [String] { blacklistStringToArray(defaults.string("dontShowBlacklist")) }
     static var disableShortcutsBlacklist: [String] { blacklistStringToArray(defaults.string("disableShortcutsBlacklist")) }

src/logic/Window.swift

@@ -4,10 +4,11 @@ class Window {
     var cgWindowId: CGWindowID
     var title: String!
     var thumbnail: NSImage?
-    var icon: NSImage?
+    var icon: NSImage? { get { application.runningApplication.icon } }
     var shouldShowTheUser = true
     var isTabbed: Bool = false
-    var isHidden: Bool
+    var isHidden: Bool { get { application.runningApplication.isHidden } }
+    var dockLabel: Int? { get { application.dockLabel.flatMap { Int($0) } } }
     var isFullscreen: Bool
     var isMinimized: Bool
     var isOnAllSpaces: Bool
@@ -35,8 +36,6 @@ class Window {
         self.cgWindowId = wid
         self.spaceId = Spaces.currentSpaceId
         self.spaceIndex = Spaces.currentSpaceIndex
-        self.icon = application.runningApplication.icon
-        self.isHidden = application.runningApplication.isHidden
         self.isFullscreen = isFullscreen
         self.isMinimized = isMinimized
         self.isOnAllSpaces = false

src/logic/events/AccessibilityEvents.swift

@@ -86,11 +86,7 @@ private func applicationHiddenOrShown(_ element: AXUIElement, _ pid: pid_t, _ ty
     DispatchQueue.main.async {
         let windows = Windows.list.filter {
             // for AXUIElement of apps, CFEqual or == don't work; looks like a Cocoa bug
-            let isFromApp = $0.application.runningApplication.processIdentifier == pid
+            return $0.application.runningApplication.processIdentifier == pid
-            if isFromApp {
-                $0.isHidden = type == kAXApplicationHiddenNotification
-            }
-            return isFromApp
         }
         App.app.refreshOpenUi(windows)
     }

src/ui/App.swift

@@ -270,6 +270,8 @@ class App: AppCenterApplication, NSApplicationDelegate {
         guard appIsBeingUsed else { return }
         Windows.refreshAllThumbnails()
         guard appIsBeingUsed else { return }
+        Applications.refreshBadges()
+        guard appIsBeingUsed else { return }
         refreshOpenUi()
         guard appIsBeingUsed else { return }
         thumbnailsPanel.show()

src/ui/main-window/ThumbnailFontIconView.swift

@@ -7,22 +7,21 @@ enum Symbols: String {
     case circledNumber0 = "􀀸"
     case circledNumber10 = "􀓵"
     case circledStar = "􀕬"
+    case filledCircledStar = "􀕭"
     case filledCircled = "􀀁"
     case filledCircledMultiplySign = "􀁑"
     case filledCircledMinusSign = "􀁏"
     case filledCircledPlusSign = "􀁍"
+    case filledCircledNumber0 = "􀀹"
+    case filledCircledNumber10 = "􀔔"
 }
 
 // Font icon using SF Symbols from the SF Pro font from Apple
 // see https://developer.apple.com/design/human-interface-guidelines/sf-symbols/overview/
 class ThumbnailFontIconView: ThumbnailTitleView {
-    convenience init(_ symbol: Symbols, _ size: CGFloat = Preferences.fontIconSize, _ color: NSColor = .white, _ isBackground: Bool = false) {
+    convenience init(_ symbol: Symbols, _ size: CGFloat = Preferences.fontIconSize, _ color: NSColor = .white, _ shadow: NSShadow? = ThumbnailView.makeShadow(.darkGray)) {
         // This helps SF symbols display vertically centered and not clipped at the bottom
-        if isBackground {
+        self.init(size, 3, shadow: shadow)
-            self.init(size, 3, shadow: nil)
-        } else {
-            self.init(size, 3)
-        }
         string = symbol.rawValue
         font = NSFont(name: "SF Pro Text", size: size)
         textColor = color
@@ -31,32 +30,39 @@ class ThumbnailFontIconView: ThumbnailTitleView {
     }
 
     // number should be in the interval [0-50]
-    func setNumber(_ number: UInt32) {
+    func setNumber(_ number: Int, _ filled: Bool) {
-        let (baseCharacter, offset) = baseCharacterAndOffset(number)
+        let (baseCharacter, offset) = baseCharacterAndOffset(number, filled)
-        assignIfDifferent(&string, String(UnicodeScalar(baseCharacter.unicodeScalars.first!.value + offset)!))
+        assignIfDifferent(&string, String(UnicodeScalar(Int(baseCharacter.unicodeScalars.first!.value) + offset)!))
+    }
+
+    private func baseCharacterAndOffset(_ number: Int, _ filled: Bool) -> (String, Int) {
+        if number <= 9 {
+            // numbers alternate between empty and full circles; we skip the full circles
+            return ((filled ? Symbols.filledCircledNumber0 : Symbols.circledNumber0).rawValue, number * 2)
+        } else {
+            return ((filled ? Symbols.filledCircledNumber10 : Symbols.circledNumber10).rawValue, number - 10)
+        }
     }
 
     func setStar() {
         assignIfDifferent(&string, Symbols.circledStar.rawValue)
     }
 
-    private func baseCharacterAndOffset(_ number: UInt32) -> (String, UInt32) {
+    func setFilledStar() {
-        if number <= 9 {
+        assignIfDifferent(&string, Symbols.filledCircledStar.rawValue)
-            // numbers alternate between empty and full circles; we skip the full circles
-            return (Symbols.circledNumber0.rawValue, number * UInt32(2))
-        } else {
-            return (Symbols.circledNumber10.rawValue, number - 10)
-        }
     }
 }
 
 class ThumbnailFilledFontIconView: NSView {
-    convenience init(_ thumbnailFontIconView: ThumbnailFontIconView, _ backgroundColor: NSColor) {
+    convenience init(_ thumbnailFontIconView: ThumbnailFontIconView, _ backgroundColor: NSColor, _ offset: Bool = false) {
         self.init(frame: .zero)
         translatesAutoresizingMaskIntoConstraints = false
-        let backgroundView = ThumbnailFontIconView(.filledCircled, thumbnailFontIconView.font!.pointSize, backgroundColor, true)
+        let backgroundView = ThumbnailFontIconView(.filledCircled, thumbnailFontIconView.font!.pointSize - (offset ? 2 : 0), backgroundColor)
         addSubview(backgroundView)
         addSubview(thumbnailFontIconView, positioned: .above, relativeTo: nil)
-        fit(backgroundView.fittingSize.width, backgroundView.fittingSize.height)
+        if offset {
+            backgroundView.leftAnchor.constraint(equalTo: backgroundView.superview!.leftAnchor, constant: 1).isActive = true
+        }
+        fit(thumbnailFontIconView.fittingSize.width, thumbnailFontIconView.fittingSize.height)
     }
 }

src/ui/main-window/ThumbnailView.swift

@@ -9,9 +9,10 @@ class ThumbnailView: NSStackView {
     var minimizedIcon = ThumbnailFontIconView(.circledMinusSign)
     var hiddenIcon = ThumbnailFontIconView(.circledSlashSign)
     var spaceIcon = ThumbnailFontIconView(.circledNumber0)
-    var closeIcon = ThumbnailFilledFontIconView(ThumbnailFontIconView(.filledCircledMultiplySign, Preferences.fontIconSize, NSColor(srgbRed: 1, green: 0.35, blue: 0.32, alpha: 1)), NSColor(srgbRed: 0.64, green: 0.03, blue: 0.02, alpha: 1))
+    var dockLabelIcon = ThumbnailFilledFontIconView(ThumbnailFontIconView(.filledCircledNumber0, (Preferences.fontIconSize * 0.7).rounded(), NSColor(srgbRed: 1, green: 0.30, blue: 0.25, alpha: 1), nil), NSColor.white, true)
-    var minimizeIcon = ThumbnailFilledFontIconView(ThumbnailFontIconView(.filledCircledMinusSign, Preferences.fontIconSize, NSColor(srgbRed: 0.91, green: 0.75, blue: 0.16, alpha: 1)), NSColor(srgbRed: 0.71, green: 0.55, blue: 0.09, alpha: 1))
+    var closeIcon = ThumbnailFilledFontIconView(ThumbnailFontIconView(.filledCircledMultiplySign, Preferences.fontIconSize, NSColor(srgbRed: 1, green: 0.35, blue: 0.32, alpha: 1), nil), NSColor(srgbRed: 0.64, green: 0.03, blue: 0.02, alpha: 1))
-    var maximizeIcon = ThumbnailFilledFontIconView(ThumbnailFontIconView(.filledCircledPlusSign, Preferences.fontIconSize, NSColor(srgbRed: 0.32, green: 0.76, blue: 0.17, alpha: 1)), NSColor(srgbRed: 0.04, green: 0.39, blue: 0.02, alpha: 1))
+    var minimizeIcon = ThumbnailFilledFontIconView(ThumbnailFontIconView(.filledCircledMinusSign, Preferences.fontIconSize, NSColor(srgbRed: 0.91, green: 0.75, blue: 0.16, alpha: 1), nil), NSColor(srgbRed: 0.71, green: 0.55, blue: 0.09, alpha: 1))
+    var maximizeIcon = ThumbnailFilledFontIconView(ThumbnailFontIconView(.filledCircledPlusSign, Preferences.fontIconSize, NSColor(srgbRed: 0.32, green: 0.76, blue: 0.17, alpha: 1), nil), NSColor(srgbRed: 0.04, green: 0.39, blue: 0.02, alpha: 1))
     var hStackView: NSStackView!
     var mouseUpCallback: (() -> Void)!
     var mouseMovedCallback: (() -> Void)!
@@ -42,9 +43,16 @@ class ThumbnailView: NSStackView {
         hStackView.spacing = Preferences.intraCellPadding
         setViews([hStackView, thumbnail], in: .leading)
         addWindowControls()
+        addDockLabelIcon()
     }
 
-    func addWindowControls() {
+    private func addDockLabelIcon() {
+        appIcon.addSubview(dockLabelIcon, positioned: .above, relativeTo: nil)
+        dockLabelIcon.topAnchor.constraint(equalTo: appIcon.topAnchor, constant: -4).isActive = true
+        dockLabelIcon.rightAnchor.constraint(equalTo: appIcon.rightAnchor, constant: 1).isActive = true
+    }
+
+    private func addWindowControls() {
         thumbnail.addSubview(closeIcon, positioned: .above, relativeTo: nil)
         thumbnail.addSubview(minimizeIcon, positioned: .above, relativeTo: nil)
         thumbnail.addSubview(maximizeIcon, positioned: .above, relativeTo: nil)
@@ -117,10 +125,19 @@ class ThumbnailView: NSStackView {
         assignIfDifferent(&minimizedIcon.isHidden, !element.isMinimized || Preferences.hideStatusIcons)
         assignIfDifferent(&spaceIcon.isHidden, Spaces.isSingleSpace || Preferences.hideSpaceNumberLabels)
         if !spaceIcon.isHidden {
-            if element.isOnAllSpaces {
+            if element.spaceIndex > 30 || element.isOnAllSpaces {
                 spaceIcon.setStar()
             } else {
-                spaceIcon.setNumber(UInt32(element.spaceIndex))
+                spaceIcon.setNumber(element.spaceIndex, false)
+            }
+        }
+        assignIfDifferent(&dockLabelIcon.isHidden, element.dockLabel == nil || Preferences.hideAppBadges || Preferences.iconSize == 0)
+        if !dockLabelIcon.isHidden, let dockLabel = element.dockLabel {
+            let view = dockLabelIcon.subviews[1] as! ThumbnailFontIconView
+            if dockLabel > 30 {
+                view.setFilledStar()
+            } else {
+                view.setNumber(dockLabel, true)
             }
         }
         assignIfDifferent(&frame.size.width, max(thumbnail.frame.size.width + Preferences.intraCellPadding * 2, ThumbnailView.widthMin(screen)))

src/ui/preferences-window/tabs/AppearanceTab.swift

@@ -24,6 +24,7 @@ class AppearanceTab: NSViewController, PreferencePane {
             LabelAndControl.makeLabelWithCheckbox(NSLocalizedString("Hide status icons:", comment: ""), "hideStatusIcons"),
             LabelAndControl.makeLabelWithCheckbox(NSLocalizedString("Show standard tabs as windows:", comment: ""), "showTabsAsWindows"),
             LabelAndControl.makeLabelWithCheckbox(NSLocalizedString("Hide colored circles on mouse hover:", comment: ""), "hideColoredCircles"),
+            LabelAndControl.makeLabelWithCheckbox(NSLocalizedString("Hide app badges:", comment: ""), "hideAppBadges"),
         ])
         grid.column(at: 0).xPlacement = .trailing
         grid.rowAlignment = .lastBaseline