feat: macOS Zoom cursor tracking prototype (SPC z w)

config.el

@@ -937,7 +937,67 @@ Keeps the status bar and tab bar fully visible at any zoom level.")
        :desc "Readable (32pt)"     "r" #'my/zoom-readable
        :desc "Toggle magnifier"    "m" #'my/mag-toggle
        :desc "Mag zoom in"         "M" #'my/mag-zoom-in
-       :desc "Mag zoom out"        "N" #'my/mag-zoom-out))
+       :desc "Mag zoom out"        "N" #'my/mag-zoom-out
+       :desc "Cursor warp (macOS Zoom)" "w" #'my/cursor-warp-toggle))
+
+
+;;; ============================================================
+;;; ACCESSIBILITY — MACOS ZOOM CURSOR TRACKING (SPC z w)
+;;; ============================================================
+;; Prototype pro macOS Zoom "Follow mouse cursor" mode.
+;;
+;; Princip: po každém klávesovém příkazu přesune myš na pozici textového
+;; kurzoru. macOS Zoom v "Follow mouse" módu pak sleduje kurzor.
+;; Myš je neviditelná při psaní (make-pointer-invisible) → žádné vizuální
+;; rušení. Při pohybu myší se viewport nepohybuje (warp se přeskočí).
+;;
+;; SETUP (jednorázové nastavení macOS):
+;;   System Settings → Accessibility → Zoom → Zoom style: Full Screen
+;;   "When zoomed in, the screen image moves: Continuously with pointer"
+;;   Zoom level: dle potřeby (např. 4-16×)
+;;   Pak zapni SPC z w pro aktivaci cursor trackingu.
+;;
+;; SPC z w   toggle cursor warp on/off
+;; SPC z +/- font scaling (volitelné, pro jemné doladění)
+
+(defvar my/cursor-warp-enabled nil
+  "When non-nil, mouse is warped to text cursor on each keyboard command.")
+
+;; Hide mouse pointer while typing (standard Emacs feature).
+(setq make-pointer-invisible t)
+
+(defun my/last-input-was-mouse-p ()
+  "Return non-nil if last input event was a mouse or scroll event."
+  (and last-input-event
+       (or (mouse-event-p last-input-event)
+           (mouse-movement-p last-input-event)
+           (and (listp last-input-event)
+                (memq (car last-input-event)
+                      '(wheel-up wheel-down wheel-left wheel-right
+                        mouse-4 mouse-5 mouse-6 mouse-7))))))
+
+(defun my/warp-mouse-to-cursor ()
+  "Move mouse pointer to current text cursor position.
+Skips if last input was a mouse event (let user pan freely with mouse)."
+  (when (and my/cursor-warp-enabled
+             (display-graphic-p)
+             (not (my/last-input-was-mouse-p))
+             (not (window-minibuffer-p (selected-window))))
+    (when-let* ((pos (window-absolute-pixel-position))
+                (x   (car pos))
+                ;; Place mouse at vertical center of cursor line.
+                (y   (+ (cdr pos) (/ (line-pixel-height) 2))))
+      (set-mouse-pixel-position (selected-frame) x y))))
+
+(add-hook 'post-command-hook #'my/warp-mouse-to-cursor)
+
+(defun my/cursor-warp-toggle ()
+  "Toggle macOS Zoom cursor tracking on/off."
+  (interactive)
+  (setq my/cursor-warp-enabled (not my/cursor-warp-enabled))
+  (if my/cursor-warp-enabled
+      (message "Cursor warp ON — macOS Zoom will follow text cursor")
+    (message "Cursor warp OFF")))
 
 
 ;;; ============================================================