Adding a setting to warp mouse pointer after Alt+Tab action completes

Author: rcalixte

data/org.cinnamon.gschema.xml

@@ -429,6 +429,11 @@
       <summary>Show all windows from all workspaces</summary>
     </key>
 
+    <key type="b" name="alttab-switcher-warp-mouse-pointer">
+      <default>false</default>
+      <summary>Warp mouse pointer to the new focused window</summary>
+    </key>
+
     <key name="bring-windows-to-current-workspace" type="b">
       <default>false</default>
       <summary>not used - lives in org.cinnamon.muffin now</summary>

files/usr/share/cinnamon/cinnamon-settings/modules/cs_windows.py

@@ -178,3 +178,6 @@ def update_setting(widget, pspec):
 
             widget = GSettingsSwitch(_("Show windows from all workspaces"), "org.cinnamon", "alttab-switcher-show-all-workspaces")
             settings.add_row(widget)
+
+            widget = GSettingsSwitch(_("Warp mouse pointer to the new focused window"), "org.cinnamon", "alttab-switcher-warp-mouse-pointer")
+            settings.add_row(widget)

js/ui/appSwitcher/appSwitcher.js

@@ -428,8 +428,17 @@ AppSwitcher.prototype = {
     },
 
     _activateSelected: function() {
-        let workspace_num = this._windows[this._currentIndex].get_workspace().index();
-        Main.activateWindow(this._windows[this._currentIndex], global.get_current_time(), workspace_num);
+        const _window = this._windows[this._currentIndex]
+        const workspace_num = _window.get_workspace().index();
+        Main.activateWindow(_window, global.get_current_time(), workspace_num);
+        this._warpMouse = global.settings.get_boolean("alttab-switcher-warp-mouse-pointer");
+        if (this._warpMouse) {
+                const rect = _window.get_frame_rect();
+                const x = rect.x + rect.width / 2;
+                const y = rect.y + rect.height / 2;
+                this._pointer = Clutter.get_default_backend().get_default_seat().create_virtual_device(Clutter.InputDeviceType.POINTER_DEVICE);
+                this._pointer.notify_absolute_motion(global.get_current_time(), x, y);
+        }
         if (!this._destroyed)
             this.destroy();
     },