Fix Spindle/Laser Control menu (#20347)

Marlin/src/feature/spindle_laser.cpp

   // Set the spindle direction and apply immediately
   // Stop on direction change if SPINDLE_STOP_ON_DIR_CHANGE is enabled
   //
-  void SpindleLaser::set_direction(const bool reverse) {
+  void SpindleLaser::set_reverse(const bool reverse) {
     const bool dir_state = (reverse == SPINDLE_INVERT_DIR); // Forward (M3) HIGH when not inverted
     if (TERN0(SPINDLE_STOP_ON_DIR_CHANGE, enabled()) && READ(SPINDLE_DIR_PIN) != dir_state) disable();
     WRITE(SPINDLE_DIR_PIN, dir_state);

Marlin/src/feature/spindle_laser.h

   static const inline uint8_t cpwr_to_pct(const cutter_cpower_t cpwr) {
     constexpr cutter_cpower_t power_floor = TERN(CUTTER_POWER_RELATIVE, SPEED_POWER_MIN, 0),
                               power_range = SPEED_POWER_MAX - power_floor;
-    return unitPower ? round(100.0f * (cpwr - power_floor) / power_range) : 0;
+    return cpwr ? round(100.0f * (cpwr - power_floor) / power_range) : 0;
   }
 
   // Convert a cpower (e.g., SPEED_POWER_STARTUP) to unit power (upwr, upower),
   }
 
   #if ENABLED(SPINDLE_CHANGE_DIR)
-    static void set_direction(const bool reverse);
+    static void set_reverse(const bool reverse);
+    static bool is_reverse() { return READ(SPINDLE_DIR_PIN) == SPINDLE_INVERT_DIR; }
   #else
-    static inline void set_direction(const bool) {}
+    static inline void set_reverse(const bool) {}
+    static bool is_reverse() { return false; }
   #endif
 
   static inline void disable() { isReady = false; set_enabled(false); }
       else
         menuPower = cpwr_to_upwr(SPEED_POWER_STARTUP);
       unitPower = menuPower;
-      set_direction(reverse);
+      set_reverse(reverse);
       set_enabled(true);
     }
     FORCE_INLINE static void enable_forward() { enable_with_dir(false); }
     FORCE_INLINE static void enable_reverse() { enable_with_dir(true); }
+    FORCE_INLINE static void enable_same_dir() { enable_with_dir(is_reverse()); }
 
     #if ENABLED(SPINDLE_LASER_PWM)
       static inline void update_from_mpower() {

Marlin/src/gcode/control/M3-M5.cpp

   #endif
 
   planner.synchronize();   // Wait for previous movement commands (G0/G0/G2/G3) to complete before changing power
-  cutter.set_direction(is_M4);
+  cutter.set_reverse(is_M4);
 
   #if ENABLED(SPINDLE_LASER_PWM)
     if (parser.seenval('O')) {

Marlin/src/lcd/language/language_en.h

   #endif
   PROGMEM Language_Str MSG_PREHEAT_CUSTOM                  = _UxGT("Preheat Custom");
   PROGMEM Language_Str MSG_COOLDOWN                        = _UxGT("Cooldown");
+
   PROGMEM Language_Str MSG_CUTTER_FREQUENCY                = _UxGT("Frequency");
   PROGMEM Language_Str MSG_LASER_MENU                      = _UxGT("Laser Control");
-  PROGMEM Language_Str MSG_LASER_OFF                       = _UxGT("Laser Off");
-  PROGMEM Language_Str MSG_LASER_ON                        = _UxGT("Laser On");
-  PROGMEM Language_Str MSG_LASER_POWER                     = _UxGT("Laser Power");
   PROGMEM Language_Str MSG_SPINDLE_MENU                    = _UxGT("Spindle Control");
-  PROGMEM Language_Str MSG_SPINDLE_OFF                     = _UxGT("Spindle Off");
-  PROGMEM Language_Str MSG_SPINDLE_ON                      = _UxGT("Spindle On");
-  PROGMEM Language_Str MSG_SPINDLE_POWER                   = _UxGT("Spindle Power");
+  PROGMEM Language_Str MSG_LASER_POWER                     = _UxGT("Laser Power");
+  PROGMEM Language_Str MSG_SPINDLE_POWER                   = _UxGT("Spindle Pwr");
+  PROGMEM Language_Str MSG_LASER_TOGGLE                    = _UxGT("Toggle Laser");
+  PROGMEM Language_Str MSG_SPINDLE_TOGGLE                  = _UxGT("Toggle Spindle");
+  PROGMEM Language_Str MSG_SPINDLE_FORWARD                 = _UxGT("Spindle Forward");
   PROGMEM Language_Str MSG_SPINDLE_REVERSE                 = _UxGT("Spindle Reverse");
+
   PROGMEM Language_Str MSG_SWITCH_PS_ON                    = _UxGT("Switch Power On");
   PROGMEM Language_Str MSG_SWITCH_PS_OFF                   = _UxGT("Switch Power Off");
   PROGMEM Language_Str MSG_EXTRUDE                         = _UxGT("Extrude");

Marlin/src/lcd/menu/menu.h

 
 extern uint8_t screen_history_depth;
 inline void clear_menu_history() { screen_history_depth = 0; }
+
+#define STICKY_SCREEN(S) []{ ui.defer_status_screen(); ui.goto_screen(S); }

Marlin/src/lcd/menu/menu_main.cpp

   }
 
   #if HAS_CUTTER
-    SUBMENU(MSG_CUTTER(MENU), menu_spindle_laser);
+    SUBMENU(MSG_CUTTER(MENU), STICKY_SCREEN(menu_spindle_laser));
   #endif
 
   #if HAS_TEMPERATURE

Marlin/src/lcd/menu/menu_spindle_laser.cpp

   #include "../../feature/spindle_laser.h"
 
   void menu_spindle_laser() {
-
-    const bool is_enabled = cutter.enabled() && cutter.isReady;
+    bool is_enabled = cutter.enabled() && cutter.isReady;
+    #if ENABLED(SPINDLE_CHANGE_DIR)
+      bool is_rev = cutter.is_reverse();
+    #endif
 
     START_MENU();
     BACK_ITEM(MSG_MAIN);
         cutter.mpower_min(), cutter.mpower_max(), cutter.update_from_mpower);
     #endif
 
-    if (is_enabled)
-      ACTION_ITEM(MSG_CUTTER(OFF), cutter.disable);
-    else {
-      ACTION_ITEM(MSG_CUTTER(ON), cutter.enable_forward);
-      #if ENABLED(SPINDLE_CHANGE_DIR)
-        ACTION_ITEM(MSG_SPINDLE_REVERSE, cutter.enable_reverse);
-      #endif
-    }
+    editable.state = is_enabled;
+    EDIT_ITEM(bool, MSG_CUTTER(TOGGLE), &is_enabled, []{ if (editable.state) cutter.disable(); else cutter.enable_same_dir(); });
+
+    #if ENABLED(SPINDLE_CHANGE_DIR)
+      if (!is_enabled) {
+        editable.state = is_rev;
+        ACTION_ITEM_P(is_rev ? GET_TEXT(MSG_CUTTER(REVERSE)) : GET_TEXT(MSG_CUTTER(FORWARD)), []{ cutter.set_reverse(!editable.state); });
+      }
+    #endif
 
     #if BOTH(MARLIN_DEV_MODE, HAL_CAN_SET_PWM_FREQ) && defined(SPINDLE_LASER_FREQUENCY)
       EDIT_ITEM_FAST(CUTTER_MENU_FREQUENCY_TYPE, MSG_CUTTER_FREQUENCY, &cutter.frequency, 2000, 50000, cutter.refresh_frequency);
     #endif
+
     END_MENU();
   }