feat: add preference: fade out animation for the main ui (closes #234)

resources/l10n/Localizable.strings

@@ -64,6 +64,9 @@
 /* No comment provided by engineer. */
 "Don’t check for updates periodically" = "Don’t check for updates periodically";
 
+/* No comment provided by engineer. */
+"Fade out animation:" = "Fade out animation:";
+
 /* No comment provided by engineer. */
 "General" = "General";
 

src/logic/Preferences.swift

@@ -32,6 +32,7 @@ class Preferences {
         "appsToShow": "0",
         "spacesToShow": "0",
         "screensToShow": "0",
+        "fadeOutAnimation": "false",
         "hideSpaceNumberLabels": "false",
         "startAtLogin": "true",
     ]
@@ -66,6 +67,7 @@ class Preferences {
     static var showHiddenWindows: Bool { defaults.bool("showHiddenWindows") }
     static var showTabsAsWindows: Bool { defaults.bool("showTabsAsWindows") }
     static var windowDisplayDelay: DispatchTimeInterval { DispatchTimeInterval.milliseconds(defaults.int("windowDisplayDelay")) }
+    static var fadeOutAnimation: Bool { defaults.bool("fadeOutAnimation") }
     static var hideSpaceNumberLabels: Bool { defaults.bool("hideSpaceNumberLabels") }
     static var startAtLogin: Bool { defaults.bool("startAtLogin") }
 

src/ui/main-window/ThumbnailsPanel.swift

@@ -6,7 +6,7 @@ class ThumbnailsPanel: NSPanel {
     convenience init() {
         self.init(contentRect: .zero, styleMask: .utilityWindow, backing: .buffered, defer: true)
         isFloatingPanel = true
-        animationBehavior = .none
+        updateFadeOutAnimation()
         hidesOnDeactivate = false
         hasShadow = false
         titleVisibility = .hidden
@@ -20,6 +20,10 @@ class ThumbnailsPanel: NSPanel {
         setAccessibilitySubrole(.unknown)
     }
 
+    func updateFadeOutAnimation() {
+        animationBehavior = Preferences.fadeOutAnimation ? .utilityWindow : .none
+    }
+
     func show() {
         makeKeyAndOrderFront(nil)
         thumbnailsView.scrollView.flashScrollers()

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

@@ -18,6 +18,7 @@ class AppearanceTab: NSViewController, PreferencePane {
             LabelAndControl.makeLabelWithSlider(NSLocalizedString("Window title font size:", comment: ""), "fontHeight", 0, 64, 11, false, "px"),
             LabelAndControl.makeLabelWithDropdown(NSLocalizedString("Show on:", comment: ""), "showOnScreen", ShowOnScreenPreference.allCases),
             LabelAndControl.makeLabelWithSlider(NSLocalizedString("Apparition delay:", comment: ""), "windowDisplayDelay", 0, 2000, 11, false, "ms"),
+            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"),
         ])