feat: default layout based on screen aspect ratio (closes #436)

src/logic/Preferences.swift

@@ -7,9 +7,6 @@ class Preferences {
     // default values
     static var defaultValues: [String: String] = [
         "maxScreenUsage": "80",
-        "minCellsPerRow": "5",
-        "maxCellsPerRow": "10",
-        "rowsCount": "3",
         "iconSize": "32",
         "fontHeight": "15",
         "holdShortcut": "⌥",
@@ -41,7 +38,7 @@ class Preferences {
         "dontShowBlacklist": "",
         "disableShortcutsBlacklist": ["com.realvnc.vncviewer", "com.microsoft.rdc.macos", "com.teamviewer.TeamViewer", "org.virtualbox.app.VirtualBoxVM", "com.parallels.vm", "com.citrix.XenAppViewer"].joined(separator: "\n"),
         "disableShortcutsBlacklistOnlyFullscreen": "true",
-    ]
+    ].merging(defaultsDependingOnScreenRatio()) { (_, new) in new }
 
     // constant values
     // not exposed as preferences now but may be in the future, probably through macro preferences
@@ -147,6 +144,21 @@ class Preferences {
     static func blacklistStringToArray(_ blacklist: String) -> [String] {
         return blacklist.components(separatedBy: "\n").map { $0.trimmingCharacters(in: .whitespaces) }
     }
+
+    static func defaultsDependingOnScreenRatio() -> [String: String] {
+        let ratio = Screen.mainScreenRatio()
+        // landscape
+        if ratio > 1 {
+            // 15/10 and wider; tested with 16/10 and 16/9
+            if ratio > (15 / 10) {
+                return ["rowsCount": "4", "minCellsPerRow": "4", "maxCellsPerRow": "7"]
+            }
+            // narrower than 15/10; tested with 4/3
+            return ["rowsCount": "3", "minCellsPerRow": "4", "maxCellsPerRow": "7"]
+        }
+        // vertical; tested with 10/16
+        return ["rowsCount": "6", "minCellsPerRow": "3", "maxCellsPerRow": "4"]
+    }
 }
 
 // MacroPreference are collection of values derived from a single key

src/logic/Screen.swift

@@ -1,6 +1,11 @@
 import Cocoa
 
 class Screen {
+    static func mainScreenRatio() -> CGFloat {
+        let mainScreen = NSScreen.main!.frame
+        return mainScreen.width / mainScreen.height
+    }
+
     static func preferred() -> NSScreen {
         switch Preferences.showOnScreen {
             case .includingMouse: return withMouse() ?? NSScreen.main! // .main as fall-back

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

@@ -11,9 +11,9 @@ class AppearanceTab: NSViewController, PreferencePane {
             LabelAndControl.makeLabelWithDropdown(NSLocalizedString("Theme:", comment: ""), "theme", ThemePreference.allCases),
             LabelAndControl.makeLabelWithDropdown(NSLocalizedString("Align windows:", comment: ""), "alignThumbnails", AlignThumbnailsPreference.allCases),
             LabelAndControl.makeLabelWithSlider(NSLocalizedString("Max size on screen:", comment: ""), "maxScreenUsage", 10, 100, 10, true, "%"),
+            LabelAndControl.makeLabelWithSlider(NSLocalizedString("Rows of windows:", comment: ""), "rowsCount", 1, 20, 20, true),
             LabelAndControl.makeLabelWithSlider(NSLocalizedString("Min windows per row:", comment: ""), "minCellsPerRow", 1, 20, 20, true),
             LabelAndControl.makeLabelWithSlider(NSLocalizedString("Max windows per row:", comment: ""), "maxCellsPerRow", 1, 40, 20, true),
-            LabelAndControl.makeLabelWithSlider(NSLocalizedString("Rows of windows:", comment: ""), "rowsCount", 1, 20, 20, true),
             LabelAndControl.makeLabelWithSlider(NSLocalizedString("Window app icon size:", comment: ""), "iconSize", 0, 64, 11, false, "px"),
             LabelAndControl.makeLabelWithSlider(NSLocalizedString("Window title font size:", comment: ""), "fontHeight", 0, 64, 11, false, "px"),
             LabelAndControl.makeLabelWithDropdown(NSLocalizedString("Window title truncation:", comment: ""), "titleTruncation", TitleTruncationPreference.allCases),