feat: automatically resize focused pane

GhosttyTabs.xcodeproj/project.pbxproj

@@ -269,6 +269,7 @@
 		D1320AA0D1320AA0D1320AA1 /* AppIconDockTilePlugin.swift in Sources */ = {isa = PBXBuildFile; fileRef = D1320AA0D1320AA0D1320AA4 /* AppIconDockTilePlugin.swift */; };
 		D1320AA0D1320AA0D1320AA2 /* CmuxDockTilePlugin.plugin in Copy Dock Tile Plugin */ = {isa = PBXBuildFile; fileRef = D1320AA0D1320AA0D1320AA5 /* CmuxDockTilePlugin.plugin */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
 		D1BEF00002A1B2C3D4E5F719 /* open in Copy CLI */ = {isa = PBXBuildFile; fileRef = D1BEF00001A1B2C3D4E5F719 /* open */; };
+		D1F0C5E2A0B1C2D3E4F50001 /* FocusResizeSettingsTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = D1F0C5E2A0B1C2D3E4F50000 /* FocusResizeSettingsTests.swift */; };
 		D9FEC58D5BACCF76459F1BBE /* AuthEnvironment.swift in Sources */ = {isa = PBXBuildFile; fileRef = 43430FA5929121E2EAAB3091 /* AuthEnvironment.swift */; };
 		DA7A10CA710E000000000003 /* Localizable.xcstrings in Resources */ = {isa = PBXBuildFile; fileRef = DA7A10CA710E000000000001 /* Localizable.xcstrings */; };
 		DA7A10CA710E000000000004 /* InfoPlist.xcstrings in Resources */ = {isa = PBXBuildFile; fileRef = DA7A10CA710E000000000002 /* InfoPlist.xcstrings */; };
@@ -642,6 +643,7 @@
 		D1320AA0D1320AA0D1320AA4 /* AppIconDockTilePlugin.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AppIconDockTilePlugin.swift; sourceTree = "<group>"; };
 		D1320AA0D1320AA0D1320AA5 /* CmuxDockTilePlugin.plugin */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = CmuxDockTilePlugin.plugin; sourceTree = BUILT_PRODUCTS_DIR; };
 		D1BEF00001A1B2C3D4E5F719 /* open */ = {isa = PBXFileReference; lastKnownFileType = text.script.sh; path = Resources/bin/open; sourceTree = SOURCE_ROOT; };
+		D1F0C5E2A0B1C2D3E4F50000 /* FocusResizeSettingsTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = FocusResizeSettingsTests.swift; sourceTree = "<group>"; };
 		D2C075029771815DD5DA1332 /* NotificationAndMenuBarTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NotificationAndMenuBarTests.swift; sourceTree = "<group>"; };
 		DA7A10CA710E000000000001 /* Localizable.xcstrings */ = {isa = PBXFileReference; lastKnownFileType = text.json.xcstrings; path = Localizable.xcstrings; sourceTree = "<group>"; };
 		DA7A10CA710E000000000002 /* InfoPlist.xcstrings */ = {isa = PBXFileReference; lastKnownFileType = text.json.xcstrings; path = InfoPlist.xcstrings; sourceTree = "<group>"; };
@@ -1048,6 +1050,7 @@
 				F8000001A1B2C3D4E5F60718 /* SocketControlPasswordStoreTests.swift */,
 				F9000001A1B2C3D4E5F60718 /* GhosttyEnsureFocusWindowActivationTests.swift */,
 				F1C1AA20B7E84D10A1C10001 /* InactivePaneFirstClickFocusTests.swift */,
+				D1F0C5E2A0B1C2D3E4F50000 /* FocusResizeSettingsTests.swift */,
 				FA000001A1B2C3D4E5F60718 /* WorkspaceStressProfileTests.swift */,
 					A5008380 /* BrowserFindJavaScriptTests.swift */,
 					C2B6A97D1F2E4C71A8B9D002 /* BrowserOmnibarPerformanceSupportTests.swift */,
@@ -1593,6 +1596,7 @@
 				F8000000A1B2C3D4E5F60718 /* SocketControlPasswordStoreTests.swift in Sources */,
 				F9000000A1B2C3D4E5F60718 /* GhosttyEnsureFocusWindowActivationTests.swift in Sources */,
 				F1C1AA21B7E84D10A1C10001 /* InactivePaneFirstClickFocusTests.swift in Sources */,
+				D1F0C5E2A0B1C2D3E4F50001 /* FocusResizeSettingsTests.swift in Sources */,
 				FA000000A1B2C3D4E5F60718 /* WorkspaceStressProfileTests.swift in Sources */,
 				A5008381 /* BrowserFindJavaScriptTests.swift in Sources */,
 				A5008383 /* CommandPaletteSearchEngineTests.swift in Sources */,

Resources/Localizable.xcstrings

@@ -52627,6 +52627,75 @@
         }
       }
     },
+    "settings.app.focusResize": {
+      "extractionState": "manual",
+      "localizations": {
+        "en": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "Resize Focused Pane"
+          }
+        },
+        "ja": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "フォーカスペインのリサイズ"
+          }
+        },
+        "uk": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "Змінити розмір активної панелі"
+          }
+        }
+      }
+    },
+    "settings.app.focusResize.subtitle": {
+      "extractionState": "manual",
+      "localizations": {
+        "en": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "Automatically resizes the focused pane to take more space when switching between split panes"
+          }
+        },
+        "ja": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "分割ペインの切り替え時にフォーカスしたペインを自動的にリサイズしてスペースを広げます"
+          }
+        },
+        "uk": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "Автоматично змінює розмір активної панелі для виділення більше місця при перемиканні між розділеними панелями"
+          }
+        }
+      }
+    },
+    "settings.app.focusResizeRatio": {
+      "extractionState": "manual",
+      "localizations": {
+        "en": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "Focus Resize Amount"
+          }
+        },
+        "ja": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "フォーカスリサイズ量"
+          }
+        },
+        "uk": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "Масштаб зміни розміру"
+          }
+        }
+      }
+    },
     "settings.app.paneFirstClickFocus": {
       "extractionState": "manual",
       "localizations": {

Sources/App/WorkspaceRuntimeSettings.swift

@@ -109,6 +109,22 @@ enum TerminalScrollBarSettings {
     }
 }
 
+enum FocusResizeSettings {
+    static let enabledKey = "focusResize.enabled"
+    static let ratioKey = "focusResize.ratio"
+    static let defaultEnabled = false
+    static let defaultRatio: Double = 0.75
+
+    static func isEnabled(defaults: UserDefaults = .standard) -> Bool {
+        defaults.object(forKey: enabledKey) as? Bool ?? defaultEnabled
+    }
+
+    static func ratio(defaults: UserDefaults = .standard) -> Double {
+        let value = defaults.object(forKey: ratioKey) != nil ? defaults.double(forKey: ratioKey) : defaultRatio
+        return min(max(value, 0.5), 0.9)
+    }
+}
+
 enum UITestLaunchManifest {
     static let argumentName = "-cmuxUITestLaunchManifest"
 

Sources/KeyboardShortcutSettingsFileStore.swift

@@ -39,6 +39,8 @@ final class CmuxSettingsFileStore {
         "app.minimalMode",
         "app.keepWorkspaceOpenWhenClosingLastSurface",
         "app.focusPaneOnFirstClick",
+        "app.focusResize",
+        "app.focusResizeRatio",
         "app.preferredEditor",
         "app.openMarkdownInCmuxViewer",
         "app.iMessageMode",
@@ -435,6 +437,13 @@ final class CmuxSettingsFileStore {
         if let value = jsonBool(section["focusPaneOnFirstClick"]) {
             snapshot.managedUserDefaults[PaneFirstClickFocusSettings.enabledKey] = .bool(value)
         }
+        if let value = jsonBool(section["focusResize"]) {
+            snapshot.managedUserDefaults[FocusResizeSettings.enabledKey] = .bool(value)
+        }
+        if let value = jsonDouble(section["focusResizeRatio"]) {
+            let clamped = min(max(value, 0.5), 0.9)
+            snapshot.managedUserDefaults[FocusResizeSettings.ratioKey] = .double(clamped)
+        }
         if let value = jsonString(section["preferredEditor"]) {
             snapshot.managedUserDefaults[PreferredEditorSettings.key] = .string(value)
         }
@@ -1242,6 +1251,8 @@ final class CmuxSettingsFileStore {
                     "minimalMode": false,
                     "keepWorkspaceOpenWhenClosingLastSurface": !LastSurfaceCloseShortcutSettings.defaultValue,
                     "focusPaneOnFirstClick": PaneFirstClickFocusSettings.defaultEnabled,
+                    "focusResize": FocusResizeSettings.defaultEnabled,
+                    "focusResizeRatio": FocusResizeSettings.defaultRatio,
                     "preferredEditor": "",
                     "openMarkdownInCmuxViewer": CmdClickMarkdownRouteSettings.defaultValue,
                     "reorderOnNotification": WorkspaceAutoReorderSettings.defaultValue,