From 6dd356dc53d581aeb75588a1faf39aabd2578873 Mon Sep 17 00:00:00 2001
From: Himadri Bhattacharjee <107522312+lavafroth@users.noreply.github.com>
Date: Wed, 26 Mar 2025 09:11:12 +0530
Subject: [PATCH] add option for moving cursor to the focused window (#89)

---
 package/contents/ui/config.ui | 10 ++++++++++
 package/contents/ui/main.qml  |  9 +++++++++
 src/extern/global.d.ts        |  1 +
 src/lib/config/config.ts      |  1 +
 src/lib/config/definition.ts  |  5 +++++
 src/lib/extern/dbuscall.ts    |  3 +++
 src/lib/world/World.ts        |  9 +++++++++
 src/tests/utils/global.ts     |  1 +
 8 files changed, 39 insertions(+)
 create mode 100644 src/lib/extern/dbuscall.ts

diff --git a/package/contents/ui/config.ui b/package/contents/ui/config.ui
index 6ac6e65..f0f9edc 100644
--- a/package/contents/ui/config.ui
+++ b/package/contents/ui/config.ui
@@ -29,6 +29,16 @@
                                                 </property>
                                             </widget>
                                         </item>
+                                        <item>
+                                            <widget class="QCheckBox" name="kcfg_cursorFollowsFocus">
+                                                <property name="text">
+                                                    <string>Cursor follows focus</string>
+                                                </property>
+                                                <property name="toolTip">
+                                                    <string>When a window gains focus, move the cursor to it</string>
+                                                </property>
+                                            </widget>
+                                        </item>
                                         <item>
                                             <widget class="QCheckBox" name="kcfg_stackColumnsByDefault">
                                                 <property name="text">
diff --git a/package/contents/ui/main.qml b/package/contents/ui/main.qml
index d4cd1a2..2e0cdbd 100644
--- a/package/contents/ui/main.qml
+++ b/package/contents/ui/main.qml
@@ -51,4 +51,13 @@ Item {
         onCancelled: qmlBase.karouselInstance.gestureScrollFinish()
         onProgressChanged: qmlBase.karouselInstance.gestureScroll(progress)
     }
+
+    DBusCall {
+        id: moveCursorToFocus
+
+        service: "org.kde.kglobalaccel"
+        path: "/component/kwin"
+        method: "invokeShortcut"
+        arguments: ["MoveMouseToFocus"]
+    }
 }
diff --git a/src/extern/global.d.ts b/src/extern/global.d.ts
index 14c21af..247bb7b 100644
--- a/src/extern/global.d.ts
+++ b/src/extern/global.d.ts
@@ -4,3 +4,4 @@ declare const Workspace: Workspace;
 declare const qmlBase: QmlObject;
 declare const notificationInvalidWindowRules: Notification;
 declare const notificationInvalidPresetWidths: Notification;
+declare const moveCursorToFocus: DBusCall;
diff --git a/src/lib/config/config.ts b/src/lib/config/config.ts
index f6a63e0..2d717c1 100644
--- a/src/lib/config/config.ts
+++ b/src/lib/config/config.ts
@@ -11,6 +11,7 @@ type Config = {
     presetWidths: string;
     offScreenOpacity: number;
     untileOnDrag: boolean;
+    cursorFollowsFocus: boolean;
     stackColumnsByDefault: boolean;
     resizeNeighborColumn: boolean;
     reMaximize: boolean;
diff --git a/src/lib/config/definition.ts b/src/lib/config/definition.ts
index 15c2a8a..62d6b50 100644
--- a/src/lib/config/definition.ts
+++ b/src/lib/config/definition.ts
@@ -114,6 +114,11 @@ const configDef = [
         type: "Bool",
         default: true,
     },
+    {
+        name: "cursorFollowsFocus",
+        type: "Bool",
+        default: false,
+    },
     {
         name: "stackColumnsByDefault",
         type: "Bool",
diff --git a/src/lib/extern/dbuscall.ts b/src/lib/extern/dbuscall.ts
new file mode 100644
index 0000000..f0bc73c
--- /dev/null
+++ b/src/lib/extern/dbuscall.ts
@@ -0,0 +1,3 @@
+type DBusCall = QmlObject & {
+    call(): void;
+};
diff --git a/src/lib/world/World.ts b/src/lib/world/World.ts
index 2db41cf..c76a47a 100644
--- a/src/lib/world/World.ts
+++ b/src/lib/world/World.ts
@@ -5,9 +5,11 @@ class World {
     private readonly workspaceSignalManager: SignalManager;
     private readonly shortcutActions: ShortcutAction[];
     private readonly screenResizedDelayer: Delayer;
+    private readonly cursorFollowsFocus: boolean;
 
     constructor(config: Config) {
         this.workspaceSignalManager = initWorkspaceSignalHandlers(this);
+        this.cursorFollowsFocus = config.cursorFollowsFocus;
 
         let presetWidths = {
             next: (currentWidth: number, minWidth: number, maxWidth: number) => currentWidth,
@@ -97,6 +99,13 @@ class World {
 
     private update() {
         this.desktopManager.getCurrentDesktop().arrange();
+        this.moveCursorToFocus();
+    }
+
+    private moveCursorToFocus() {
+        if (this.cursorFollowsFocus && moveCursorToFocus !== undefined) {
+            moveCursorToFocus.call();
+        }
     }
 
     public do(f: (clientManager: ClientManager, desktopManager: DesktopManager) => void) {
diff --git a/src/tests/utils/global.ts b/src/tests/utils/global.ts
index 2daa880..a4d4039 100644
--- a/src/tests/utils/global.ts
+++ b/src/tests/utils/global.ts
@@ -4,6 +4,7 @@ let Workspace: Workspace;
 let qmlBase: QmlObject;
 let notificationInvalidWindowRules: Notification;
 let notificationInvalidPresetWidths: Notification;
+let moveCursorToFocus: DBusCall;
 
 let screen: MockQmlRect;
 let tilingArea: MockQmlRect;