add option for moving cursor to the focused window (#89)

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">

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"]
+    }
 }

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;

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;

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",

src/lib/extern/dbuscall.ts

@@ -0,0 +1,3 @@
+type DBusCall = QmlObject & {
+    call(): void;
+};

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) {

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;