ExtUI homing / leveling additions

Marlin/src/gcode/bedlevel/abl/G29.cpp

@@ -177,6 +177,8 @@ G29_TYPE GcodeSuite::G29() {
     if (DISABLED(PROBE_MANUALLY) && seenQ) G29_RETURN(false);
   #endif
 
+  TERN_(EXTENSIBLE_UI, ExtUI::onMeshLevelingStart());
+
   const bool seenA = TERN0(PROBE_MANUALLY, parser.seen('A')),
          no_action = seenA || seenQ,
               faux = ENABLED(DEBUG_LEVELING_FEATURE) && DISABLED(PROBE_MANUALLY) ? parser.boolval('C') : no_action;

Marlin/src/gcode/calibrate/G28.cpp

@@ -50,6 +50,10 @@
   #include "../../lcd/dwin/e3v2/dwin.h"
 #endif
 
+#if ENABLED(EXTENSIBLE_UI)
+  #include "../../lcd/extui/ui_api.h"
+#endif
+
 #if HAS_L64XX                         // set L6470 absolute position registers to counts
   #include "../../libs/L64XX/L64XX_Marlin.h"
 #endif
@@ -209,6 +213,8 @@ void GcodeSuite::G28() {
 
   TERN_(DWIN_CREALITY_LCD, HMI_flag.home_flag = true);
 
+  TERN_(EXTENSIBLE_UI, ExtUI::onHomingStart());
+
   #if ENABLED(DUAL_X_CARRIAGE)
     bool IDEX_saved_duplication_state = extruder_duplication_enabled;
     DualXMode IDEX_saved_mode = dual_x_carriage_mode;
@@ -462,6 +468,8 @@ void GcodeSuite::G28() {
 
   TERN_(DWIN_CREALITY_LCD, DWIN_CompletedHoming());
 
+  TERN_(EXTENSIBLE_UI, ExtUI::onHomingComplete());
+
   report_current_position();
 
   if (ENABLED(NANODLP_Z_SYNC) && (doZ || ENABLED(NANODLP_ALL_AXIS)))

Marlin/src/gcode/sd/M1001.cpp

@@ -96,6 +96,8 @@ void GcodeSuite::M1001() {
     queue.inject_P(PSTR(SD_FINISHED_RELEASECOMMAND));
   #endif
 
+  TERN_(EXTENSIBLE_UI, ExtUI::onPrintFinished());
+
   // Re-select the last printed file in the UI
   TERN_(SD_REPRINT_LAST_SELECTED_FILE, ui.reselect_last_file());
 }