feat: preference to hide colored circles on mouse hover (closes #460)

src/logic/Preferences.swift

@@ -27,6 +27,7 @@ class Preferences {
         "showHiddenWindows": "true",
         "showHiddenWindows2": "true",
         "showTabsAsWindows": "false",
+        "hideColoredCircles": "false",
         "windowDisplayDelay": "0",
         "theme": "0",
         "showOnScreen": "0",
@@ -79,6 +80,7 @@ class Preferences {
     static var showMinimizedWindows: [Bool] { ["showMinimizedWindows", "showMinimizedWindows2"].map { defaults.bool($0) } }
     static var showHiddenWindows: [Bool] { ["showHiddenWindows", "showHiddenWindows2"].map { defaults.bool($0) } }
     static var showTabsAsWindows: Bool { defaults.bool("showTabsAsWindows") }
+    static var hideColoredCircles: Bool { defaults.bool("hideColoredCircles") }
     static var windowDisplayDelay: DispatchTimeInterval { DispatchTimeInterval.milliseconds(defaults.int("windowDisplayDelay")) }
     static var fadeOutAnimation: Bool { defaults.bool("fadeOutAnimation") }
     static var hideSpaceNumberLabels: Bool { defaults.bool("hideSpaceNumberLabels") }

src/ui/main-window/ThumbnailView.swift

@@ -62,7 +62,7 @@ class ThumbnailView: NSStackView {
         if let shouldShowWindowControls = shouldShowWindowControls_ {
             self.shouldShowWindowControls = shouldShowWindowControls
         }
-        let shouldShow = shouldShowWindowControls && isHighlighted
+        let shouldShow = shouldShowWindowControls && isHighlighted && !Preferences.hideColoredCircles
         if isShowingWindowControls != shouldShow {
             isShowingWindowControls = shouldShow
             [closeIcon, minimizeIcon, maximizeIcon].forEach { $0.isHidden = !shouldShow }

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

@@ -22,6 +22,7 @@ class AppearanceTab: NSViewController, PreferencePane {
             LabelAndControl.makeLabelWithCheckbox(NSLocalizedString("Fade out animation:", comment: ""), "fadeOutAnimation", extraAction: { _ in App.app.thumbnailsPanel.updateFadeOutAnimation() }),
             LabelAndControl.makeLabelWithCheckbox(NSLocalizedString("Hide space number labels:", comment: ""), "hideSpaceNumberLabels"),
             LabelAndControl.makeLabelWithCheckbox(NSLocalizedString("Show standard tabs as windows:", comment: ""), "showTabsAsWindows"),
+            LabelAndControl.makeLabelWithCheckbox(NSLocalizedString("Hide colored circles on mouse hover:", comment: ""), "hideColoredCircles"),
         ])
         grid.column(at: 0).xPlacement = .trailing
         grid.rowAlignment = .lastBaseline