From cfc36684aacf0ed9443e039d714de0410f52f7d2 Mon Sep 17 00:00:00 2001
From: yufanyufan <yufanyufan@gmail.com>
Date: Sun, 19 Jul 2020 14:35:15 -0700
Subject: [PATCH] More customizable DGUSDisplay (#18700)

---
 Marlin/src/lcd/extui/lib/dgus/DGUSDisplay.cpp | 1144 +----------------
 Marlin/src/lcd/extui/lib/dgus/DGUSDisplay.h   |  217 ----
 .../src/lcd/extui/lib/dgus/DGUSDisplayDef.h   |    4 +
 .../lcd/extui/lib/dgus/DGUSScreenHandler.cpp  | 1144 +++++++++++++++++
 .../lcd/extui/lib/dgus/DGUSScreenHandler.h    |  246 ++++
 .../src/lcd/extui/lib/dgus/DGUSVPVariable.h   |    2 +
 .../extui/lib/dgus/fysetc/DGUSDisplayDef.cpp  |  169 +--
 .../extui/lib/dgus/hiprecy/DGUSDisplayDef.cpp |  163 +--
 .../extui/lib/dgus/origin/DGUSDisplayDef.cpp  |  159 +--
 Marlin/src/lcd/extui_dgus_lcd.cpp             |    1 +
 buildroot/tests/FYSETC_F6_13-tests            |    3 +-
 11 files changed, 1669 insertions(+), 1583 deletions(-)
 create mode 100644 Marlin/src/lcd/extui/lib/dgus/DGUSScreenHandler.cpp
 create mode 100644 Marlin/src/lcd/extui/lib/dgus/DGUSScreenHandler.h

diff --git a/Marlin/src/lcd/extui/lib/dgus/DGUSDisplay.cpp b/Marlin/src/lcd/extui/lib/dgus/DGUSDisplay.cpp
index 1cef323926..989a06623a 100644
--- a/Marlin/src/lcd/extui/lib/dgus/DGUSDisplay.cpp
+++ b/Marlin/src/lcd/extui/lib/dgus/DGUSDisplay.cpp
@@ -59,1095 +59,8 @@ constexpr uint8_t DGUS_CMD_READVAR = 0x83;
   bool dguslcd_local_debug; // = false;
 #endif
 
-#if ENABLED(DGUS_FILAMENT_LOADUNLOAD)
-  typedef struct  {
-    ExtUI::extruder_t extruder; // which extruder to operate
-    uint8_t action; // load or unload
-    bool heated; // heating done ?
-    float purge_length; // the length to extrude before unload, prevent filament jam
-  } filament_data_t;
-  static filament_data_t filament_data;
-#endif
-
-uint16_t DGUSScreenVariableHandler::ConfirmVP;
-
-#if ENABLED(SDSUPPORT)
-  int16_t DGUSScreenVariableHandler::top_file = 0;
-  int16_t DGUSScreenVariableHandler::file_to_print = 0;
-  static ExtUI::FileList filelist;
-#endif
-
-void (*DGUSScreenVariableHandler::confirm_action_cb)() = nullptr;
-
-//DGUSScreenVariableHandler ScreenHandler;
-
-DGUSLCD_Screens DGUSScreenVariableHandler::current_screen;
-DGUSLCD_Screens DGUSScreenVariableHandler::past_screens[NUM_PAST_SCREENS];
-uint8_t DGUSScreenVariableHandler::update_ptr;
-uint16_t DGUSScreenVariableHandler::skipVP;
-bool DGUSScreenVariableHandler::ScreenComplete;
-
-//DGUSDisplay dgusdisplay;
-
-rx_datagram_state_t DGUSDisplay::rx_datagram_state = DGUS_IDLE;
-uint8_t DGUSDisplay::rx_datagram_len = 0;
-bool DGUSDisplay::Initialized = false;
-bool DGUSDisplay::no_reentrance = false;
-
 #define dgusserial DGUS_SERIAL
 
-// endianness swap
-uint16_t swap16(const uint16_t value) { return (value & 0xffU) << 8U | (value >> 8U); }
-
-bool populate_VPVar(const uint16_t VP, DGUS_VP_Variable * const ramcopy) {
-  // DEBUG_ECHOPAIR("populate_VPVar ", VP);
-  const DGUS_VP_Variable *pvp = DGUSLCD_FindVPVar(VP);
-  // DEBUG_ECHOLNPAIR(" pvp ", (uint16_t )pvp);
-  if (!pvp) return false;
-  memcpy_P(ramcopy, pvp, sizeof(DGUS_VP_Variable));
-  return true;
-}
-
-void DGUSScreenVariableHandler::sendinfoscreen(const char* line1, const char* line2, const char* line3, const char* line4, bool l1inflash, bool l2inflash, bool l3inflash, bool l4inflash) {
-  DGUS_VP_Variable ramcopy;
-  if (populate_VPVar(VP_MSGSTR1, &ramcopy)) {
-    ramcopy.memadr = (void*) line1;
-    l1inflash ? DGUSScreenVariableHandler::DGUSLCD_SendStringToDisplayPGM(ramcopy) : DGUSScreenVariableHandler::DGUSLCD_SendStringToDisplay(ramcopy);
-  }
-  if (populate_VPVar(VP_MSGSTR2, &ramcopy)) {
-    ramcopy.memadr = (void*) line2;
-    l2inflash ? DGUSScreenVariableHandler::DGUSLCD_SendStringToDisplayPGM(ramcopy) : DGUSScreenVariableHandler::DGUSLCD_SendStringToDisplay(ramcopy);
-  }
-  if (populate_VPVar(VP_MSGSTR3, &ramcopy)) {
-    ramcopy.memadr = (void*) line3;
-    l3inflash ? DGUSScreenVariableHandler::DGUSLCD_SendStringToDisplayPGM(ramcopy) : DGUSScreenVariableHandler::DGUSLCD_SendStringToDisplay(ramcopy);
-  }
-  if (populate_VPVar(VP_MSGSTR4, &ramcopy)) {
-    ramcopy.memadr = (void*) line4;
-    l4inflash ? DGUSScreenVariableHandler::DGUSLCD_SendStringToDisplayPGM(ramcopy) : DGUSScreenVariableHandler::DGUSLCD_SendStringToDisplay(ramcopy);
-  }
-}
-
-void DGUSScreenVariableHandler::HandleUserConfirmationPopUp(uint16_t VP, const char* line1, const char* line2, const char* line3, const char* line4, bool l1, bool l2, bool l3, bool l4) {
-  if (current_screen == DGUSLCD_SCREEN_CONFIRM) {
-    // Already showing a pop up, so we need to cancel that first.
-    PopToOldScreen();
-  }
-
-  ConfirmVP = VP;
-  sendinfoscreen(line1, line2, line3, line4, l1, l2, l3, l4);
-  ScreenHandler.GotoScreen(DGUSLCD_SCREEN_CONFIRM);
-}
-
-void DGUSScreenVariableHandler::setstatusmessage(const char *msg) {
-  DGUS_VP_Variable ramcopy;
-  if (populate_VPVar(VP_M117, &ramcopy)) {
-    ramcopy.memadr = (void*) msg;
-    DGUSLCD_SendStringToDisplay(ramcopy);
-  }
-}
-
-void DGUSScreenVariableHandler::setstatusmessagePGM(PGM_P const msg) {
-  DGUS_VP_Variable ramcopy;
-  if (populate_VPVar(VP_M117, &ramcopy)) {
-    ramcopy.memadr = (void*) msg;
-    DGUSLCD_SendStringToDisplayPGM(ramcopy);
-  }
-}
-
-// Send an 8 bit or 16 bit value to the display.
-void DGUSScreenVariableHandler::DGUSLCD_SendWordValueToDisplay(DGUS_VP_Variable &var) {
-  if (var.memadr) {
-    //DEBUG_ECHOPAIR(" DGUS_LCD_SendWordValueToDisplay ", var.VP);
-    //DEBUG_ECHOLNPAIR(" data ", *(uint16_t *)var.memadr);
-    uint8_t *tmp = (uint8_t *) var.memadr;
-    uint16_t data_to_send = (tmp[0] << 8);
-    if (var.size >= 1) data_to_send |= tmp[1];
-    dgusdisplay.WriteVariable(var.VP, data_to_send);
-  }
-}
-
-// Send an uint8_t between 0 and 255 to the display, but scale to a percentage (0..100)
-void DGUSScreenVariableHandler::DGUSLCD_SendPercentageToDisplay(DGUS_VP_Variable &var) {
-  if (var.memadr) {
-    //DEBUG_ECHOPAIR(" DGUS_LCD_SendWordValueToDisplay ", var.VP);
-    //DEBUG_ECHOLNPAIR(" data ", *(uint16_t *)var.memadr);
-    uint16_t tmp = *(uint8_t *) var.memadr +1 ; // +1 -> avoid rounding issues for the display.
-    tmp = map(tmp, 0, 255, 0, 100);
-    uint16_t data_to_send = swap16(tmp);
-    dgusdisplay.WriteVariable(var.VP, data_to_send);
-  }
-}
-
-// Send the current print progress to the display.
-void DGUSScreenVariableHandler::DGUSLCD_SendPrintProgressToDisplay(DGUS_VP_Variable &var) {
-  //DEBUG_ECHOPAIR(" DGUSLCD_SendPrintProgressToDisplay ", var.VP);
-  uint16_t tmp = ExtUI::getProgress_percent();
-  //DEBUG_ECHOLNPAIR(" data ", tmp);
-  uint16_t data_to_send = swap16(tmp);
-  dgusdisplay.WriteVariable(var.VP, data_to_send);
-}
-
-// Send the current print time to the display.
-// It is using a hex display for that: It expects BSD coded data in the format xxyyzz
-void DGUSScreenVariableHandler::DGUSLCD_SendPrintTimeToDisplay(DGUS_VP_Variable &var) {
-  duration_t elapsed = print_job_timer.duration();
-  char buf[32];
-  elapsed.toString(buf);
-  dgusdisplay.WriteVariable(VP_PrintTime, buf, var.size, true);
-}
-
-// Send an uint8_t between 0 and 100 to a variable scale to 0..255
-void DGUSScreenVariableHandler::DGUSLCD_PercentageToUint8(DGUS_VP_Variable &var, void *val_ptr) {
-  if (var.memadr) {
-    uint16_t value = swap16(*(uint16_t*)val_ptr);
-    *(uint8_t*)var.memadr = map(constrain(value, 0, 100), 0, 100, 0, 255);
-  }
-}
-
-// Sends a (RAM located) string to the DGUS Display
-// (Note: The DGUS Display does not clear after the \0, you have to
-// overwrite the remainings with spaces.// var.size has the display buffer size!
-void DGUSScreenVariableHandler::DGUSLCD_SendStringToDisplay(DGUS_VP_Variable &var) {
-  char *tmp = (char*) var.memadr;
-  dgusdisplay.WriteVariable(var.VP, tmp, var.size, true);
-}
-
-// Sends a (flash located) string to the DGUS Display
-// (Note: The DGUS Display does not clear after the \0, you have to
-// overwrite the remainings with spaces.// var.size has the display buffer size!
-void DGUSScreenVariableHandler::DGUSLCD_SendStringToDisplayPGM(DGUS_VP_Variable &var) {
-  char *tmp = (char*) var.memadr;
-  dgusdisplay.WriteVariablePGM(var.VP, tmp, var.size, true);
-}
-
-#if HAS_PID_HEATING
-  void DGUSScreenVariableHandler::DGUSLCD_SendTemperaturePID(DGUS_VP_Variable &var) {
-    float value = *(float *)var.memadr;
-    float valuesend = 0;
-    switch (var.VP) {
-      default: return;
-      #if HOTENDS >= 1
-        case VP_E0_PID_P: valuesend = value; break;
-        case VP_E0_PID_I: valuesend = unscalePID_i(value); break;
-        case VP_E0_PID_D: valuesend = unscalePID_d(value); break;
-      #endif
-      #if HOTENDS >= 2
-        case VP_E1_PID_P: valuesend = value; break;
-        case VP_E1_PID_I: valuesend = unscalePID_i(value); break;
-        case VP_E1_PID_D: valuesend = unscalePID_d(value); break;
-      #endif
-      #if HAS_HEATED_BED
-        case VP_BED_PID_P: valuesend = value; break;
-        case VP_BED_PID_I: valuesend = unscalePID_i(value); break;
-        case VP_BED_PID_D: valuesend = unscalePID_d(value); break;
-      #endif
-    }
-
-    valuesend *= cpow(10, 1);
-    union { int16_t i; char lb[2]; } endian;
-
-    char tmp[2];
-    endian.i = valuesend;
-    tmp[0] = endian.lb[1];
-    tmp[1] = endian.lb[0];
-    dgusdisplay.WriteVariable(var.VP, tmp, 2);
-  }
-#endif
-
-#if ENABLED(PRINTCOUNTER)
-
-  // Send the accumulate print time to the display.
-  // It is using a hex display for that: It expects BSD coded data in the format xxyyzz
-  void DGUSScreenVariableHandler::DGUSLCD_SendPrintAccTimeToDisplay(DGUS_VP_Variable &var) {
-    printStatistics state = print_job_timer.getStats();
-    char buf[21];
-    duration_t elapsed = state.printTime;
-    elapsed.toString(buf);
-    dgusdisplay.WriteVariable(VP_PrintAccTime, buf, var.size, true);
-  }
-
-  void DGUSScreenVariableHandler::DGUSLCD_SendPrintsTotalToDisplay(DGUS_VP_Variable &var) {
-    printStatistics state = print_job_timer.getStats();
-    char buf[21];
-    sprintf_P(buf, PSTR("%u"), state.totalPrints);
-    dgusdisplay.WriteVariable(VP_PrintsTotal, buf, var.size, true);
-  }
-
-#endif
-
-// Send fan status value to the display.
-#if HAS_FAN
-  void DGUSScreenVariableHandler::DGUSLCD_SendFanStatusToDisplay(DGUS_VP_Variable &var) {
-    if (var.memadr) {
-      DEBUG_ECHOPAIR(" DGUSLCD_SendFanStatusToDisplay ", var.VP);
-      DEBUG_ECHOLNPAIR(" data ", *(uint8_t *)var.memadr);
-      uint16_t data_to_send = 0;
-      if (*(uint8_t *) var.memadr) data_to_send = 1;
-      data_to_send = swap16(data_to_send);
-      dgusdisplay.WriteVariable(var.VP, data_to_send);
-    }
-  }
-#endif
-
-// Send heater status value to the display.
-void DGUSScreenVariableHandler::DGUSLCD_SendHeaterStatusToDisplay(DGUS_VP_Variable &var) {
-  if (var.memadr) {
-    DEBUG_ECHOPAIR(" DGUSLCD_SendHeaterStatusToDisplay ", var.VP);
-    DEBUG_ECHOLNPAIR(" data ", *(int16_t *)var.memadr);
-    uint16_t data_to_send = 0;
-    if (*(int16_t *) var.memadr) data_to_send = 1;
-    data_to_send = swap16(data_to_send);
-    dgusdisplay.WriteVariable(var.VP, data_to_send);
-  }
-}
-
-#if ENABLED(DGUS_UI_WAITING)
-  void DGUSScreenVariableHandler::DGUSLCD_SendWaitingStatusToDisplay(DGUS_VP_Variable &var) {
-    // In FYSETC UI design there are 10 statuses to loop
-    static uint16_t period = 0;
-    static uint16_t index = 0;
-    //DEBUG_ECHOPAIR(" DGUSLCD_SendWaitingStatusToDisplay ", var.VP);
-    //DEBUG_ECHOLNPAIR(" data ", swap16(index));
-    if (period++ > DGUS_UI_WAITING_STATUS_PERIOD) {
-      dgusdisplay.WriteVariable(var.VP, swap16(index));
-      //DEBUG_ECHOLNPAIR(" data ", swap16(index));
-      if (++index >= DGUS_UI_WAITING_STATUS) index = 0;
-      period = 0;
-    }
-  }
-#endif
-
-#if ENABLED(SDSUPPORT)
-
-  void DGUSScreenVariableHandler::ScreenChangeHookIfSD(DGUS_VP_Variable &var, void *val_ptr) {
-    // default action executed when there is a SD card, but not printing
-    if (ExtUI::isMediaInserted() && !ExtUI::isPrintingFromMedia()) {
-      ScreenChangeHook(var, val_ptr);
-      dgusdisplay.RequestScreen(current_screen);
-      return;
-    }
-
-    // if we are printing, we jump to two screens after the requested one.
-    // This should host e.g a print pause / print abort / print resume dialog.
-    // This concept allows to recycle this hook for other file
-    if (ExtUI::isPrintingFromMedia() && !card.flag.abort_sd_printing) {
-      GotoScreen(DGUSLCD_SCREEN_SDPRINTMANIPULATION);
-      return;
-    }
-
-    // Don't let the user in the dark why there is no reaction.
-    if (!ExtUI::isMediaInserted()) {
-      setstatusmessagePGM(GET_TEXT(MSG_NO_MEDIA));
-      return;
-    }
-    if (card.flag.abort_sd_printing) {
-      setstatusmessagePGM(GET_TEXT(MSG_MEDIA_ABORTING));
-      return;
-    }
-  }
-
-  void DGUSScreenVariableHandler::DGUSLCD_SD_ScrollFilelist(DGUS_VP_Variable& var, void *val_ptr) {
-    auto old_top = top_file;
-    const int16_t scroll = (int16_t)swap16(*(uint16_t*)val_ptr);
-    if (scroll) {
-      top_file += scroll;
-      DEBUG_ECHOPAIR("new topfile calculated:", top_file);
-      if (top_file < 0) {
-        top_file = 0;
-        DEBUG_ECHOLNPGM("Top of filelist reached");
-      }
-      else {
-        int16_t max_top = filelist.count() -  DGUS_SD_FILESPERSCREEN;
-        NOLESS(max_top, 0);
-        NOMORE(top_file, max_top);
-      }
-      DEBUG_ECHOPAIR("new topfile adjusted:", top_file);
-    }
-    else if (!filelist.isAtRootDir()) {
-      filelist.upDir();
-      top_file = 0;
-      ForceCompleteUpdate();
-    }
-
-    if (old_top != top_file) ForceCompleteUpdate();
-  }
-
-  void DGUSScreenVariableHandler::DGUSLCD_SD_FileSelected(DGUS_VP_Variable &var, void *val_ptr) {
-    uint16_t touched_nr = (int16_t)swap16(*(uint16_t*)val_ptr) + top_file;
-    if (touched_nr > filelist.count()) return;
-    if (!filelist.seek(touched_nr)) return;
-    if (filelist.isDir()) {
-      filelist.changeDir(filelist.filename());
-      top_file = 0;
-      ForceCompleteUpdate();
-      return;
-    }
-
-    #if ENABLED(DGUS_PRINT_FILENAME)
-      // Send print filename
-      dgusdisplay.WriteVariable(VP_SD_Print_Filename, filelist.filename(), VP_SD_FileName_LEN, true);
-    #endif
-
-    // Setup Confirmation screen
-    file_to_print = touched_nr;
-    HandleUserConfirmationPopUp(VP_SD_FileSelectConfirm, nullptr, PSTR("Print file"), filelist.filename(), PSTR("from SD Card?"), true, true, false, true);
-  }
-
-  void DGUSScreenVariableHandler::DGUSLCD_SD_StartPrint(DGUS_VP_Variable &var, void *val_ptr) {
-    if (!filelist.seek(file_to_print)) return;
-    ExtUI::printFile(filelist.shortFilename());
-    ScreenHandler.GotoScreen(
-      #if ENABLED(DGUS_LCD_UI_ORIGIN)
-        DGUSLCD_SCREEN_STATUS
-      #else
-        DGUSLCD_SCREEN_SDPRINTMANIPULATION
-      #endif
-    );
-  }
-
-  void DGUSScreenVariableHandler::DGUSLCD_SD_ResumePauseAbort(DGUS_VP_Variable &var, void *val_ptr) {
-    if (!ExtUI::isPrintingFromMedia()) return; // avoid race condition when user stays in this menu and printer finishes.
-    switch (swap16(*(uint16_t*)val_ptr)) {
-      case 0:  // Resume
-        if (ExtUI::isPrintingFromMediaPaused()) ExtUI::resumePrint();
-        break;
-      case 1:  // Pause
-        if (!ExtUI::isPrintingFromMediaPaused()) ExtUI::pausePrint();
-        break;
-      case 2:  // Abort
-        ScreenHandler.HandleUserConfirmationPopUp(VP_SD_AbortPrintConfirmed, nullptr, PSTR("Abort printing"), filelist.filename(), PSTR("?"), true, true, false, true);
-        break;
-    }
-  }
-
-  void DGUSScreenVariableHandler::DGUSLCD_SD_ReallyAbort(DGUS_VP_Variable &var, void *val_ptr) {
-    ExtUI::stopPrint();
-    GotoScreen(DGUSLCD_SCREEN_MAIN);
-  }
-
-  void DGUSScreenVariableHandler::DGUSLCD_SD_PrintTune(DGUS_VP_Variable &var, void *val_ptr) {
-    if (!ExtUI::isPrintingFromMedia()) return; // avoid race condition when user stays in this menu and printer finishes.
-    GotoScreen(DGUSLCD_SCREEN_SDPRINTTUNE);
-  }
-
-  void DGUSScreenVariableHandler::DGUSLCD_SD_SendFilename(DGUS_VP_Variable& var) {
-    uint16_t target_line = (var.VP - VP_SD_FileName0) / VP_SD_FileName_LEN;
-    if (target_line > DGUS_SD_FILESPERSCREEN) return;
-    char tmpfilename[VP_SD_FileName_LEN + 1] = "";
-    var.memadr = (void*)tmpfilename;
-    if (filelist.seek(top_file + target_line))
-      snprintf_P(tmpfilename, VP_SD_FileName_LEN, PSTR("%s%c"), filelist.filename(), filelist.isDir() ? '/' : 0);
-    DGUSLCD_SendStringToDisplay(var);
-  }
-
-  void DGUSScreenVariableHandler::SDCardInserted() {
-    top_file = 0;
-    filelist.refresh();
-    auto cs = ScreenHandler.getCurrentScreen();
-    if (cs == DGUSLCD_SCREEN_MAIN || cs == DGUSLCD_SCREEN_STATUS)
-      ScreenHandler.GotoScreen(DGUSLCD_SCREEN_SDFILELIST);
-  }
-
-  void DGUSScreenVariableHandler::SDCardRemoved() {
-    if (current_screen == DGUSLCD_SCREEN_SDFILELIST
-        || (current_screen == DGUSLCD_SCREEN_CONFIRM && (ConfirmVP == VP_SD_AbortPrintConfirmed || ConfirmVP == VP_SD_FileSelectConfirm))
-        || current_screen == DGUSLCD_SCREEN_SDPRINTMANIPULATION
-    ) ScreenHandler.GotoScreen(DGUSLCD_SCREEN_MAIN);
-  }
-
-  void DGUSScreenVariableHandler::SDCardError() {
-    DGUSScreenVariableHandler::SDCardRemoved();
-    ScreenHandler.sendinfoscreen(PSTR("NOTICE"), nullptr, PSTR("SD card error"), nullptr, true, true, true, true);
-    ScreenHandler.SetupConfirmAction(nullptr);
-    ScreenHandler.GotoScreen(DGUSLCD_SCREEN_POPUP);
-  }
-
-#endif // SDSUPPORT
-
-void DGUSScreenVariableHandler::ScreenConfirmedOK(DGUS_VP_Variable &var, void *val_ptr) {
-  DGUS_VP_Variable ramcopy;
-  if (!populate_VPVar(ConfirmVP, &ramcopy)) return;
-  if (ramcopy.set_by_display_handler) ramcopy.set_by_display_handler(ramcopy, val_ptr);
-}
-
-const uint16_t* DGUSLCD_FindScreenVPMapList(uint8_t screen) {
-  const uint16_t *ret;
-  const struct VPMapping *map = VPMap;
-  while (ret = (uint16_t*) pgm_read_ptr(&(map->VPList))) {
-    if (pgm_read_byte(&(map->screen)) == screen) return ret;
-    map++;
-  }
-  return nullptr;
-}
-
-const DGUS_VP_Variable* DGUSLCD_FindVPVar(const uint16_t vp) {
-  const DGUS_VP_Variable *ret = ListOfVP;
-  do {
-    const uint16_t vpcheck = pgm_read_word(&(ret->VP));
-    if (vpcheck == 0) break;
-    if (vpcheck == vp) return ret;
-    ++ret;
-  } while (1);
-
-  DEBUG_ECHOLNPAIR("FindVPVar NOT FOUND ", vp);
-  return nullptr;
-}
-
-void DGUSScreenVariableHandler::ScreenChangeHookIfIdle(DGUS_VP_Variable &var, void *val_ptr) {
-  if (!ExtUI::isPrinting()) {
-    ScreenChangeHook(var, val_ptr);
-    dgusdisplay.RequestScreen(current_screen);
-  }
-}
-
-void DGUSScreenVariableHandler::ScreenChangeHook(DGUS_VP_Variable &var, void *val_ptr) {
-  uint8_t *tmp = (uint8_t*)val_ptr;
-
-  // The keycode in target is coded as <from-frame><to-frame>, so 0x0100A means
-  // from screen 1 (main) to 10 (temperature). DGUSLCD_SCREEN_POPUP is special,
-  // meaning "return to previous screen"
-  DGUSLCD_Screens target = (DGUSLCD_Screens)tmp[1];
-
-  if (target == DGUSLCD_SCREEN_POPUP) {
-    // special handling for popup is to return to previous menu
-    if (current_screen == DGUSLCD_SCREEN_POPUP && confirm_action_cb) confirm_action_cb();
-    PopToOldScreen();
-    return;
-  }
-
-  UpdateNewScreen(target);
-
-  #ifdef DEBUG_DGUSLCD
-    if (!DGUSLCD_FindScreenVPMapList(target)) DEBUG_ECHOLNPAIR("WARNING: No screen Mapping found for ", target);
-  #endif
-}
-
-void DGUSScreenVariableHandler::HandleAllHeatersOff(DGUS_VP_Variable &var, void *val_ptr) {
-  thermalManager.disable_all_heaters();
-  ScreenHandler.ForceCompleteUpdate(); // hint to send all data.
-}
-
-void DGUSScreenVariableHandler::HandleTemperatureChanged(DGUS_VP_Variable &var, void *val_ptr) {
-  uint16_t newvalue = swap16(*(uint16_t*)val_ptr);
-  uint16_t acceptedvalue;
-
-  switch (var.VP) {
-    default: return;
-    #if HOTENDS >= 1
-      case VP_T_E0_Set:
-        thermalManager.setTargetHotend(newvalue, 0);
-        acceptedvalue = thermalManager.temp_hotend[0].target;
-        break;
-    #endif
-    #if HOTENDS >= 2
-      case VP_T_E1_Set:
-        thermalManager.setTargetHotend(newvalue, 1);
-        acceptedvalue = thermalManager.temp_hotend[1].target;
-      break;
-    #endif
-    #if HAS_HEATED_BED
-      case VP_T_Bed_Set:
-        thermalManager.setTargetBed(newvalue);
-        acceptedvalue = thermalManager.temp_bed.target;
-        break;
-    #endif
-  }
-
-  // reply to display the new value to update the view if the new value was rejected by the Thermal Manager.
-  if (newvalue != acceptedvalue && var.send_to_display_handler) var.send_to_display_handler(var);
-  ScreenHandler.skipVP = var.VP; // don't overwrite value the next update time as the display might autoincrement in parallel
-}
-
-void DGUSScreenVariableHandler::HandleFlowRateChanged(DGUS_VP_Variable &var, void *val_ptr) {
-  #if EXTRUDERS
-    uint16_t newvalue = swap16(*(uint16_t*)val_ptr);
-    uint8_t target_extruder;
-    switch (var.VP) {
-      default: return;
-      #if HOTENDS >= 1
-        case VP_Flowrate_E0: target_extruder = 0; break;
-      #endif
-      #if HOTENDS >= 2
-        case VP_Flowrate_E1: target_extruder = 1; break;
-      #endif
-    }
-
-    planner.set_flow(target_extruder, newvalue);
-    ScreenHandler.skipVP = var.VP; // don't overwrite value the next update time as the display might autoincrement in parallel
-  #else
-    UNUSED(var); UNUSED(val_ptr);
-  #endif
-}
-
-void DGUSScreenVariableHandler::HandleManualExtrude(DGUS_VP_Variable &var, void *val_ptr) {
-  DEBUG_ECHOLNPGM("HandleManualExtrude");
-
-  int16_t movevalue = swap16(*(uint16_t*)val_ptr);
-  float target = movevalue * 0.01f;
-  ExtUI::extruder_t target_extruder;
-
-  switch (var.VP) {
-    #if HOTENDS >= 1
-      case VP_MOVE_E0: target_extruder = ExtUI::extruder_t::E0; break;
-    #endif
-    #if HOTENDS >= 2
-      case VP_MOVE_E1: target_extruder = ExtUI::extruder_t::E1; break;
-    #endif
-    default: return;
-  }
-
-  target += ExtUI::getAxisPosition_mm(target_extruder);
-  ExtUI::setAxisPosition_mm(target, target_extruder);
-  skipVP = var.VP;
-}
-
-#if ENABLED(DGUS_UI_MOVE_DIS_OPTION)
-  void DGUSScreenVariableHandler::HandleManualMoveOption(DGUS_VP_Variable &var, void *val_ptr) {
-    DEBUG_ECHOLNPGM("HandleManualMoveOption");
-    *(uint16_t*)var.memadr = swap16(*(uint16_t*)val_ptr);
-  }
-#endif
-
-void DGUSScreenVariableHandler::HandleManualMove(DGUS_VP_Variable &var, void *val_ptr) {
-  DEBUG_ECHOLNPGM("HandleManualMove");
-
-  int16_t movevalue = swap16(*(uint16_t*)val_ptr);
-  #if ENABLED(DGUS_UI_MOVE_DIS_OPTION)
-    if (movevalue) {
-      const uint16_t choice = *(uint16_t*)var.memadr;
-      movevalue = movevalue < 0 ? -choice : choice;
-    }
-  #endif
-  char axiscode;
-  unsigned int speed = 1500;  //FIXME: get default feedrate for manual moves, dont hardcode.
-
-  switch (var.VP) {
-    default: return;
-
-    case VP_MOVE_X:
-      axiscode = 'X';
-      if (!ExtUI::canMove(ExtUI::axis_t::X)) goto cannotmove;
-      break;
-
-    case VP_MOVE_Y:
-      axiscode = 'Y';
-      if (!ExtUI::canMove(ExtUI::axis_t::Y)) goto cannotmove;
-      break;
-
-    case VP_MOVE_Z:
-      axiscode = 'Z';
-      speed = 300; // default to 5mm/s
-      if (!ExtUI::canMove(ExtUI::axis_t::Z)) goto cannotmove;
-      break;
-
-    case VP_HOME_ALL: // only used for homing
-      axiscode = '\0';
-      movevalue = 0; // ignore value sent from display, this VP is _ONLY_ for homing.
-      break;
-  }
-
-  if (!movevalue) {
-    // homing
-    DEBUG_ECHOPAIR(" homing ", axiscode);
-    char buf[6] = "G28 X";
-    buf[4] = axiscode;
-    //DEBUG_ECHOPAIR(" ", buf);
-    queue.enqueue_one_now(buf);
-    //DEBUG_ECHOLNPGM(" ✓");
-    ScreenHandler.ForceCompleteUpdate();
-    return;
-  }
-  else {
-    //movement
-    DEBUG_ECHOPAIR(" move ", axiscode);
-    bool old_relative_mode = relative_mode;
-    if (!relative_mode) {
-      //DEBUG_ECHOPGM(" G91");
-      queue.enqueue_now_P(PSTR("G91"));
-      //DEBUG_ECHOPGM(" ✓ ");
-    }
-    char buf[32];  // G1 X9999.99 F12345
-    unsigned int backup_speed = MMS_TO_MMM(feedrate_mm_s);
-    char sign[]="\0";
-    int16_t value = movevalue / 100;
-    if (movevalue < 0) { value = -value; sign[0] = '-'; }
-    int16_t fraction = ABS(movevalue) % 100;
-    snprintf_P(buf, 32, PSTR("G0 %c%s%d.%02d F%d"), axiscode, sign, value, fraction, speed);
-    //DEBUG_ECHOPAIR(" ", buf);
-    queue.enqueue_one_now(buf);
-    //DEBUG_ECHOLNPGM(" ✓ ");
-    if (backup_speed != speed) {
-      snprintf_P(buf, 32, PSTR("G0 F%d"), backup_speed);
-      queue.enqueue_one_now(buf);
-      //DEBUG_ECHOPAIR(" ", buf);
-    }
-    //while (!enqueue_and_echo_command(buf)) idle();
-    //DEBUG_ECHOLNPGM(" ✓ ");
-    if (!old_relative_mode) {
-      //DEBUG_ECHOPGM("G90");
-      queue.enqueue_now_P(PSTR("G90"));
-      //DEBUG_ECHOPGM(" ✓ ");
-    }
-  }
-
-  ScreenHandler.ForceCompleteUpdate();
-  DEBUG_ECHOLNPGM("manmv done.");
-  return;
-
-  cannotmove:
-  DEBUG_ECHOLNPAIR(" cannot move ", axiscode);
-  return;
-}
-
-void DGUSScreenVariableHandler::HandleMotorLockUnlock(DGUS_VP_Variable &var, void *val_ptr) {
-  DEBUG_ECHOLNPGM("HandleMotorLockUnlock");
-
-  char buf[4];
-  const int16_t lock = swap16(*(uint16_t*)val_ptr);
-  strcpy_P(buf, lock ? PSTR("M18") : PSTR("M17"));
-
-  //DEBUG_ECHOPAIR(" ", buf);
-  queue.enqueue_one_now(buf);
-}
-
-#if ENABLED(POWER_LOSS_RECOVERY)
-
-  void DGUSScreenVariableHandler::HandlePowerLossRecovery(DGUS_VP_Variable &var, void *val_ptr) {
-    uint16_t value = swap16(*(uint16_t*)val_ptr);
-    if (value) {
-      queue.inject_P(PSTR("M1000"));
-      ScreenHandler.GotoScreen(DGUSLCD_SCREEN_SDPRINTMANIPULATION);
-    }
-    else {
-      recovery.cancel();
-      ScreenHandler.GotoScreen(DGUSLCD_SCREEN_STATUS);
-    }
-  }
-
-#endif
-
-void DGUSScreenVariableHandler::HandleSettings(DGUS_VP_Variable &var, void *val_ptr) {
-  DEBUG_ECHOLNPGM("HandleSettings");
-  uint16_t value = swap16(*(uint16_t*)val_ptr);
-  switch (value) {
-    default: break;
-    case 1:
-      TERN_(PRINTCOUNTER, print_job_timer.initStats());
-      queue.inject_P(PSTR("M502\nM500"));
-      break;
-    case 2: queue.inject_P(PSTR("M501")); break;
-    case 3: queue.inject_P(PSTR("M500")); break;
-  }
-}
-
-void DGUSScreenVariableHandler::HandleStepPerMMChanged(DGUS_VP_Variable &var, void *val_ptr) {
-  DEBUG_ECHOLNPGM("HandleStepPerMMChanged");
-
-  uint16_t value_raw = swap16(*(uint16_t*)val_ptr);
-  DEBUG_ECHOLNPAIR("value_raw:", value_raw);
-  float value = (float)value_raw/10;
-  ExtUI::axis_t axis;
-  switch (var.VP) {
-    case VP_X_STEP_PER_MM: axis = ExtUI::axis_t::X; break;
-    case VP_Y_STEP_PER_MM: axis = ExtUI::axis_t::Y; break;
-    case VP_Z_STEP_PER_MM: axis = ExtUI::axis_t::Z; break;
-    default: return;
-  }
-  DEBUG_ECHOLNPAIR_F("value:", value);
-  ExtUI::setAxisSteps_per_mm(value, axis);
-  DEBUG_ECHOLNPAIR_F("value_set:", ExtUI::getAxisSteps_per_mm(axis));
-  ScreenHandler.skipVP = var.VP; // don't overwrite value the next update time as the display might autoincrement in parallel
-  return;
-}
-
-void DGUSScreenVariableHandler::HandleStepPerMMExtruderChanged(DGUS_VP_Variable &var, void *val_ptr) {
-  DEBUG_ECHOLNPGM("HandleStepPerMMExtruderChanged");
-
-  uint16_t value_raw = swap16(*(uint16_t*)val_ptr);
-  DEBUG_ECHOLNPAIR("value_raw:", value_raw);
-  float value = (float)value_raw/10;
-  ExtUI::extruder_t extruder;
-  switch (var.VP) {
-    default: return;
-    #if HOTENDS >= 1
-      case VP_E0_STEP_PER_MM: extruder = ExtUI::extruder_t::E0; break;
-    #endif
-    #if HOTENDS >= 2
-      case VP_E1_STEP_PER_MM: extruder = ExtUI::extruder_t::E1; break;
-    #endif
-  }
-  DEBUG_ECHOLNPAIR_F("value:", value);
-  ExtUI::setAxisSteps_per_mm(value,extruder);
-  DEBUG_ECHOLNPAIR_F("value_set:", ExtUI::getAxisSteps_per_mm(extruder));
-  ScreenHandler.skipVP = var.VP; // don't overwrite value the next update time as the display might autoincrement in parallel
-  return;
-}
-
-#if HAS_PID_HEATING
-  void DGUSScreenVariableHandler::HandleTemperaturePIDChanged(DGUS_VP_Variable &var, void *val_ptr) {
-    uint16_t rawvalue = swap16(*(uint16_t*)val_ptr);
-    DEBUG_ECHOLNPAIR("V1:", rawvalue);
-    float value = (float)rawvalue / 10;
-    DEBUG_ECHOLNPAIR("V2:", value);
-    float newvalue = 0;
-
-    switch (var.VP) {
-      default: return;
-      #if HOTENDS >= 1
-        case VP_E0_PID_P: newvalue = value; break;
-        case VP_E0_PID_I: newvalue = scalePID_i(value); break;
-        case VP_E0_PID_D: newvalue = scalePID_d(value); break;
-      #endif
-      #if HOTENDS >= 2
-        case VP_E1_PID_P: newvalue = value; break;
-        case VP_E1_PID_I: newvalue = scalePID_i(value); break;
-        case VP_E1_PID_D: newvalue = scalePID_d(value); break;
-      #endif
-      #if HAS_HEATED_BED
-        case VP_BED_PID_P: newvalue = value; break;
-        case VP_BED_PID_I: newvalue = scalePID_i(value); break;
-        case VP_BED_PID_D: newvalue = scalePID_d(value); break;
-      #endif
-    }
-
-    DEBUG_ECHOLNPAIR_F("V3:", newvalue);
-    *(float *)var.memadr = newvalue;
-    ScreenHandler.skipVP = var.VP; // don't overwrite value the next update time as the display might autoincrement in parallel
-  }
-
-  void DGUSScreenVariableHandler::HandlePIDAutotune(DGUS_VP_Variable &var, void *val_ptr) {
-    DEBUG_ECHOLNPGM("HandlePIDAutotune");
-
-    char buf[32] = {0};
-
-    switch (var.VP) {
-      default: break;
-      #if ENABLED(PIDTEMP)
-        #if HOTENDS >= 1
-          case VP_PID_AUTOTUNE_E0: // Autotune Extruder 0
-            sprintf(buf, "M303 E%d C5 S210 U1", ExtUI::extruder_t::E0);
-            break;
-        #endif
-        #if HOTENDS >= 2
-          case VP_PID_AUTOTUNE_E1:
-            sprintf(buf, "M303 E%d C5 S210 U1", ExtUI::extruder_t::E1);
-            break;
-        #endif
-      #endif
-      #if ENABLED(PIDTEMPBED)
-        case VP_PID_AUTOTUNE_BED:
-          sprintf(buf, "M303 E-1 C5 S70 U1");
-          break;
-      #endif
-    }
-
-    if (buf[0]) queue.enqueue_one_now(buf);
-
-    #if ENABLED(DGUS_UI_WAITING)
-      sendinfoscreen(PSTR("PID is autotuning"), PSTR("please wait"), NUL_STR, NUL_STR, true, true, true, true);
-      GotoScreen(DGUSLCD_SCREEN_WAITING);
-    #endif
-  }
-#endif
-
-#if HAS_BED_PROBE
-  void DGUSScreenVariableHandler::HandleProbeOffsetZChanged(DGUS_VP_Variable &var, void *val_ptr) {
-    DEBUG_ECHOLNPGM("HandleProbeOffsetZChanged");
-
-    const float offset = float(int16_t(swap16(*(uint16_t*)val_ptr))) / 100.0f;
-    ExtUI::setZOffset_mm(offset);
-    ScreenHandler.skipVP = var.VP; // don't overwrite value the next update time as the display might autoincrement in parallel
-    return;
-  }
-#endif
-
-#if ENABLED(BABYSTEPPING)
-  void DGUSScreenVariableHandler::HandleLiveAdjustZ(DGUS_VP_Variable &var, void *val_ptr) {
-    DEBUG_ECHOLNPGM("HandleLiveAdjustZ");
-
-    int16_t flag = swap16(*(uint16_t*)val_ptr);
-    int16_t steps = flag ? -20 : 20;
-    ExtUI::smartAdjustAxis_steps(steps, ExtUI::axis_t::Z, true);
-    ScreenHandler.ForceCompleteUpdate();
-    return;
-  }
-#endif
-
-#if HAS_FAN
-  void DGUSScreenVariableHandler::HandleFanControl(DGUS_VP_Variable &var, void *val_ptr) {
-    DEBUG_ECHOLNPGM("HandleFanControl");
-    *(uint8_t*)var.memadr = *(uint8_t*)var.memadr > 0 ? 0 : 255;
-  }
-#endif
-
-void DGUSScreenVariableHandler::HandleHeaterControl(DGUS_VP_Variable &var, void *val_ptr) {
-  DEBUG_ECHOLNPGM("HandleHeaterControl");
-
-  uint8_t preheat_temp = 0;
-  switch (var.VP) {
-    #if HOTENDS >= 1
-      case VP_E0_CONTROL:
-    #endif
-    #if HOTENDS >= 2
-      case VP_E1_CONTROL:
-    #endif
-    #if HOTENDS >= 3
-      case VP_E2_CONTROL:
-    #endif
-      preheat_temp = PREHEAT_1_TEMP_HOTEND;
-      break;
-
-    case VP_BED_CONTROL:
-      preheat_temp = PREHEAT_1_TEMP_BED;
-      break;
-  }
-
-  *(int16_t*)var.memadr = *(int16_t*)var.memadr > 0 ? 0 : preheat_temp;
-}
-
-#if ENABLED(DGUS_PREHEAT_UI)
-
-  void DGUSScreenVariableHandler::HandlePreheat(DGUS_VP_Variable &var, void *val_ptr) {
-    DEBUG_ECHOLNPGM("HandlePreheat");
-
-    uint8_t e_temp = 0;
-    TERN_(HAS_HEATED_BED, uint8_t bed_temp = 0);
-    const uint16_t preheat_option = swap16(*(uint16_t*)val_ptr);
-    switch (preheat_option) {
-      default:
-      case 0: // Preheat PLA
-        #if defined(PREHEAT_1_TEMP_HOTEND) && defined(PREHEAT_1_TEMP_BED)
-          e_temp = PREHEAT_1_TEMP_HOTEND;
-          TERN_(HAS_HEATED_BED, bed_temp = PREHEAT_1_TEMP_BED);
-        #endif
-        break;
-      case 1: // Preheat ABS
-        #if defined(PREHEAT_2_TEMP_HOTEND) && defined(PREHEAT_2_TEMP_BED)
-          e_temp = PREHEAT_2_TEMP_HOTEND;
-          TERN_(HAS_HEATED_BED, bed_temp = PREHEAT_2_TEMP_BED);
-        #endif
-        break;
-      case 2: // Preheat PET
-        #if defined(PREHEAT_3_TEMP_HOTEND) && defined(PREHEAT_3_TEMP_BED)
-          e_temp = PREHEAT_3_TEMP_HOTEND;
-          TERN_(HAS_HEATED_BED, bed_temp = PREHEAT_3_TEMP_BED);
-        #endif
-        break;
-      case 3: // Preheat FLEX
-        #if defined(PREHEAT_4_TEMP_HOTEND) && defined(PREHEAT_4_TEMP_BED)
-          e_temp = PREHEAT_4_TEMP_HOTEND;
-          TERN_(HAS_HEATED_BED, bed_temp = PREHEAT_4_TEMP_BED);
-        #endif
-        break;
-      case 7: break; // Custom preheat
-      case 9: break; // Cool down
-    }
-
-    switch (var.VP) {
-      default: return;
-      #if HOTENDS >= 1
-        case VP_E0_BED_PREHEAT:
-          thermalManager.setTargetHotend(e_temp, 0);
-          TERN_(HAS_HEATED_BED, thermalManager.setTargetBed(bed_temp));
-          break;
-      #endif
-      #if HOTENDS >= 2
-        case VP_E1_BED_PREHEAT:
-          thermalManager.setTargetHotend(e_temp, 1);
-          TERN_(HAS_HEATED_BED, thermalManager.setTargetBed(bed_temp));
-        break;
-      #endif
-    }
-
-    // Go to the preheat screen to show the heating progress
-    GotoScreen(DGUSLCD_SCREEN_PREHEAT);
-  }
-
-#endif
-
-#if ENABLED(DGUS_FILAMENT_LOADUNLOAD)
-  void DGUSScreenVariableHandler::HandleFilamentOption(DGUS_VP_Variable &var, void *val_ptr) {
-    DEBUG_ECHOLNPGM("HandleFilamentOption");
-
-    uint8_t e_temp = 0;
-    filament_data.heated = false;
-    uint16_t preheat_option = swap16(*(uint16_t*)val_ptr);
-    if (preheat_option <= 8)          // Load filament type
-      filament_data.action = 1;
-    else if (preheat_option >= 10) {  // Unload filament type
-      preheat_option -= 10;
-      filament_data.action = 2;
-      filament_data.purge_length = DGUS_FILAMENT_PURGE_LENGTH;
-    }
-    else                              // Cancel filament operation
-      filament_data.action = 0;
-
-    switch (preheat_option) {
-      case 0: // Load PLA
-        #ifdef PREHEAT_1_TEMP_HOTEND
-          e_temp = PREHEAT_1_TEMP_HOTEND;
-        #endif
-        break;
-      case 1: // Load ABS
-        TERN_(PREHEAT_2_TEMP_HOTEND, e_temp = PREHEAT_2_TEMP_HOTEND);
-        break;
-      case 2: // Load PET
-        #ifdef PREHEAT_3_TEMP_HOTEND
-          e_temp = PREHEAT_3_TEMP_HOTEND;
-        #endif
-        break;
-      case 3: // Load FLEX
-        #ifdef PREHEAT_4_TEMP_HOTEND
-          e_temp = PREHEAT_4_TEMP_HOTEND;
-        #endif
-        break;
-      case 9: // Cool down
-      default:
-        e_temp = 0;
-        break;
-    }
-
-    if (filament_data.action == 0) { // Go back to utility screen
-      #if HOTENDS >= 1
-        thermalManager.setTargetHotend(e_temp, ExtUI::extruder_t::E0);
-      #endif
-      #if HOTENDS >= 2
-        thermalManager.setTargetHotend(e_temp, ExtUI::extruder_t::E1);
-      #endif
-      GotoScreen(DGUSLCD_SCREEN_UTILITY);
-    }
-    else { // Go to the preheat screen to show the heating progress
-      switch (var.VP) {
-        default: return;
-        #if HOTENDS >= 1
-          case VP_E0_FILAMENT_LOAD_UNLOAD:
-            filament_data.extruder = ExtUI::extruder_t::E0;
-            thermalManager.setTargetHotend(e_temp, filament_data.extruder);
-            break;
-        #endif
-        #if HOTENDS >= 2
-          case VP_E1_FILAMENT_LOAD_UNLOAD:
-            filament_data.extruder = ExtUI::extruder_t::E1;
-            thermalManager.setTargetHotend(e_temp, filament_data.extruder);
-          break;
-        #endif
-      }
-      GotoScreen(DGUSLCD_SCREEN_FILAMENT_HEATING);
-    }
-  }
-
-  void DGUSScreenVariableHandler::HandleFilamentLoadUnload(DGUS_VP_Variable &var) {
-    DEBUG_ECHOLNPGM("HandleFilamentLoadUnload");
-    if (filament_data.action <= 0) return;
-
-    // If we close to the target temperature, we can start load or unload the filament
-    if (thermalManager.hotEnoughToExtrude(filament_data.extruder) && \
-       thermalManager.targetHotEnoughToExtrude(filament_data.extruder)) {
-      float movevalue = DGUS_FILAMENT_LOAD_LENGTH_PER_TIME;
-
-      if (filament_data.action == 1) { // load filament
-        if (!filament_data.heated) {
-          GotoScreen(DGUSLCD_SCREEN_FILAMENT_LOADING);
-          filament_data.heated = true;
-        }
-        movevalue = ExtUI::getAxisPosition_mm(filament_data.extruder)+movevalue;
-      }
-      else { // unload filament
-        if (!filament_data.heated) {
-          GotoScreen(DGUSLCD_SCREEN_FILAMENT_UNLOADING);
-          filament_data.heated = true;
-        }
-        // Before unloading extrude to prevent jamming
-        if (filament_data.purge_length >= 0) {
-          movevalue = ExtUI::getAxisPosition_mm(filament_data.extruder) + movevalue;
-          filament_data.purge_length -= movevalue;
-        }
-        else
-          movevalue = ExtUI::getAxisPosition_mm(filament_data.extruder) - movevalue;
-      }
-      ExtUI::setAxisPosition_mm(movevalue, filament_data.extruder);
-    }
-  }
-#endif
-
-void DGUSScreenVariableHandler::UpdateNewScreen(DGUSLCD_Screens newscreen, bool popup) {
-  DEBUG_ECHOLNPAIR("SetNewScreen: ", newscreen);
-
-  if (!popup) {
-    memmove(&past_screens[1], &past_screens[0], sizeof(past_screens) - 1);
-    past_screens[0] = current_screen;
-  }
-
-  current_screen = newscreen;
-  skipVP = 0;
-  ForceCompleteUpdate();
-}
-
-void DGUSScreenVariableHandler::PopToOldScreen() {
-  DEBUG_ECHOLNPAIR("PopToOldScreen s=", past_screens[0]);
-  GotoScreen(past_screens[0], true);
-  memmove(&past_screens[0], &past_screens[1], sizeof(past_screens) - 1);
-  past_screens[sizeof(past_screens) - 1] = DGUSLCD_SCREEN_MAIN;
-}
-
-void DGUSScreenVariableHandler::UpdateScreenVPData() {
-  DEBUG_ECHOPAIR(" UpdateScreenVPData Screen: ", current_screen);
-
-  const uint16_t *VPList = DGUSLCD_FindScreenVPMapList(current_screen);
-  if (!VPList) {
-    DEBUG_ECHOLNPAIR(" NO SCREEN FOR: ", current_screen);
-    ScreenComplete = true;
-    return;  // nothing to do, likely a bug or boring screen.
-  }
-
-  // Round-robin updating of all VPs.
-  VPList += update_ptr;
-
-  bool sent_one = false;
-  do {
-    uint16_t VP = pgm_read_word(VPList);
-    DEBUG_ECHOPAIR(" VP: ", VP);
-    if (!VP) {
-      update_ptr = 0;
-      DEBUG_ECHOLNPGM(" UpdateScreenVPData done");
-      ScreenComplete = true;
-      return;  // Screen completed.
-    }
-
-    if (VP == skipVP) { skipVP = 0; continue; }
-
-    DGUS_VP_Variable rcpy;
-    if (populate_VPVar(VP, &rcpy)) {
-      uint8_t expected_tx = 6 + rcpy.size;  // expected overhead is 6 bytes + payload.
-      // Send the VP to the display, but try to avoid overrunning the Tx Buffer.
-      // But send at least one VP, to avoid getting stalled.
-      if (rcpy.send_to_display_handler && (!sent_one || expected_tx <= dgusdisplay.GetFreeTxBuffer())) {
-        //DEBUG_ECHOPAIR(" calling handler for ", rcpy.VP);
-        sent_one = true;
-        rcpy.send_to_display_handler(rcpy);
-      }
-      else {
-        //auto x=dgusdisplay.GetFreeTxBuffer();
-        //DEBUG_ECHOLNPAIR(" tx almost full: ", x);
-        //DEBUG_ECHOPAIR(" update_ptr ", update_ptr);
-        ScreenComplete = false;
-        return;  // please call again!
-      }
-    }
-
-  } while (++update_ptr, ++VPList, true);
-}
-
-void DGUSDisplay::loop() {
-  // protect against recursion… ProcessRx() may indirectly call idle() when injecting gcode commands.
-  if (!no_reentrance) {
-    no_reentrance = true;
-    ProcessRx();
-    no_reentrance = false;
-  }
-}
-
 void DGUSDisplay::InitDisplay() {
   dgusserial.begin(DGUS_BAUDRATE);
 
@@ -1199,40 +112,6 @@ void DGUSDisplay::WriteVariablePGM(uint16_t adr, const void* values, uint8_t val
   }
 }
 
-void DGUSScreenVariableHandler::GotoScreen(DGUSLCD_Screens screen, bool ispopup) {
-  dgusdisplay.RequestScreen(screen);
-  UpdateNewScreen(screen, ispopup);
-}
-
-bool DGUSScreenVariableHandler::loop() {
-  dgusdisplay.loop();
-
-  const millis_t ms = millis();
-  static millis_t next_event_ms = 0;
-
-  if (!IsScreenComplete() || ELAPSED(ms, next_event_ms)) {
-    next_event_ms = ms + DGUS_UPDATE_INTERVAL_MS;
-    UpdateScreenVPData();
-  }
-
-  #if ENABLED(SHOW_BOOTSCREEN)
-    static bool booted = false;
-    if (!booted && TERN0(POWER_LOSS_RECOVERY, recovery.valid()))
-      booted = true;
-    if (!booted && ELAPSED(ms, BOOTSCREEN_TIMEOUT)) {
-      booted = true;
-      GotoScreen(DGUSLCD_SCREEN_MAIN);
-    }
-  #endif
-  return IsScreenComplete();
-}
-
-void DGUSDisplay::RequestScreen(DGUSLCD_Screens screen) {
-  DEBUG_ECHOLNPAIR("GotoScreen ", screen);
-  const unsigned char gotoscreen[] = { 0x5A, 0x01, (unsigned char) (screen >> 8U), (unsigned char) (screen & 0xFFU) };
-  WriteVariable(0x84, gotoscreen, sizeof(gotoscreen));
-}
-
 void DGUSDisplay::ProcessRx() {
 
   #if ENABLED(DGUS_SERIAL_STATS_RX_BUFFER_OVERRUNS)
@@ -1340,7 +219,30 @@ void DGUSDisplay::WritePGM(const char str[], uint8_t len) {
   while (len--) dgusserial.write(pgm_read_byte(str++));
 }
 
+void DGUSDisplay::loop() {
+  // protect against recursion… ProcessRx() may indirectly call idle() when injecting gcode commands.
+  if (!no_reentrance) {
+    no_reentrance = true;
+    ProcessRx();
+    no_reentrance = false;
+  }
+}
+
+rx_datagram_state_t DGUSDisplay::rx_datagram_state = DGUS_IDLE;
+uint8_t DGUSDisplay::rx_datagram_len = 0;
+bool DGUSDisplay::Initialized = false;
+bool DGUSDisplay::no_reentrance = false;
+
 // A SW memory barrier, to ensure GCC does not overoptimize loops
 #define sw_barrier() asm volatile("": : :"memory");
 
+bool populate_VPVar(const uint16_t VP, DGUS_VP_Variable * const ramcopy) {
+  // DEBUG_ECHOPAIR("populate_VPVar ", VP);
+  const DGUS_VP_Variable *pvp = DGUSLCD_FindVPVar(VP);
+  // DEBUG_ECHOLNPAIR(" pvp ", (uint16_t )pvp);
+  if (!pvp) return false;
+  memcpy_P(ramcopy, pvp, sizeof(DGUS_VP_Variable));
+  return true;
+}
+
 #endif // HAS_DGUS_LCD
diff --git a/Marlin/src/lcd/extui/lib/dgus/DGUSDisplay.h b/Marlin/src/lcd/extui/lib/dgus/DGUSDisplay.h
index fea33c73d4..fd83451228 100644
--- a/Marlin/src/lcd/extui/lib/dgus/DGUSDisplay.h
+++ b/Marlin/src/lcd/extui/lib/dgus/DGUSDisplay.h
@@ -90,223 +90,6 @@ extern DGUSDisplay dgusdisplay;
 // compile-time x^y
 constexpr float cpow(const float x, const int y) { return y == 0 ? 1.0 : x * cpow(x, y - 1); }
 
-class DGUSScreenVariableHandler {
-public:
-  DGUSScreenVariableHandler() = default;
-
-  static bool loop();
-
-  /// Send all 4 strings that are displayed on the infoscreen, confirmation screen and kill screen
-  /// The bools specifing whether the strings are in RAM or FLASH.
-  static void sendinfoscreen(const char* line1, const char* line2, const char* line3, const char* line4, bool l1inflash, bool l2inflash, bool l3inflash, bool liinflash);
-
-  static void HandleUserConfirmationPopUp(uint16_t ConfirmVP, const char* line1, const char* line2, const char* line3, const char* line4, bool l1inflash, bool l2inflash, bool l3inflash, bool liinflash);
-
-  /// "M117" Message -- msg is a RAM ptr.
-  static void setstatusmessage(const char* msg);
-  /// The same for messages from Flash
-  static void setstatusmessagePGM(PGM_P const msg);
-  // Callback for VP "Display wants to change screen on idle printer"
-  static void ScreenChangeHookIfIdle(DGUS_VP_Variable &var, void *val_ptr);
-  // Callback for VP "Screen has been changed"
-  static void ScreenChangeHook(DGUS_VP_Variable &var, void *val_ptr);
-  // Callback for VP "All Heaters Off"
-  static void HandleAllHeatersOff(DGUS_VP_Variable &var, void *val_ptr);
-  // Hook for "Change this temperature"
-  static void HandleTemperatureChanged(DGUS_VP_Variable &var, void *val_ptr);
-  // Hook for "Change Flowrate"
-  static void HandleFlowRateChanged(DGUS_VP_Variable &var, void *val_ptr);
-  #if ENABLED(DGUS_UI_MOVE_DIS_OPTION)
-    // Hook for manual move option
-    static void HandleManualMoveOption(DGUS_VP_Variable &var, void *val_ptr);
-  #endif
-  // Hook for manual move.
-  static void HandleManualMove(DGUS_VP_Variable &var, void *val_ptr);
-  // Hook for manual extrude.
-  static void HandleManualExtrude(DGUS_VP_Variable &var, void *val_ptr);
-  // Hook for motor lock and unlook
-  static void HandleMotorLockUnlock(DGUS_VP_Variable &var, void *val_ptr);
-  #if ENABLED(POWER_LOSS_RECOVERY)
-    // Hook for power loss recovery.
-    static void HandlePowerLossRecovery(DGUS_VP_Variable &var, void *val_ptr);
-  #endif
-  // Hook for settings
-  static void HandleSettings(DGUS_VP_Variable &var, void *val_ptr);
-  static void HandleStepPerMMChanged(DGUS_VP_Variable &var, void *val_ptr);
-  static void HandleStepPerMMExtruderChanged(DGUS_VP_Variable &var, void *val_ptr);
-  #if HAS_PID_HEATING
-    // Hook for "Change this temperature PID para"
-    static void HandleTemperaturePIDChanged(DGUS_VP_Variable &var, void *val_ptr);
-    // Hook for PID autotune
-    static void HandlePIDAutotune(DGUS_VP_Variable &var, void *val_ptr);
-  #endif
-  #if HAS_BED_PROBE
-    // Hook for "Change probe offset z"
-    static void HandleProbeOffsetZChanged(DGUS_VP_Variable &var, void *val_ptr);
-  #endif
-  #if ENABLED(BABYSTEPPING)
-    // Hook for live z adjust action
-    static void HandleLiveAdjustZ(DGUS_VP_Variable &var, void *val_ptr);
-  #endif
-  #if HAS_FAN
-    // Hook for fan control
-    static void HandleFanControl(DGUS_VP_Variable &var, void *val_ptr);
-  #endif
-  // Hook for heater control
-  static void HandleHeaterControl(DGUS_VP_Variable &var, void *val_ptr);
-  #if ENABLED(DGUS_PREHEAT_UI)
-    // Hook for preheat
-    static void HandlePreheat(DGUS_VP_Variable &var, void *val_ptr);
-  #endif
-  #if ENABLED(DGUS_FILAMENT_LOADUNLOAD)
-    // Hook for filament load and unload filament option
-    static void HandleFilamentOption(DGUS_VP_Variable &var, void *val_ptr);
-    // Hook for filament load and unload
-    static void HandleFilamentLoadUnload(DGUS_VP_Variable &var);
-  #endif
-
-  #if ENABLED(SDSUPPORT)
-    // Callback for VP "Display wants to change screen when there is a SD card"
-    static void ScreenChangeHookIfSD(DGUS_VP_Variable &var, void *val_ptr);
-    /// Scroll buttons on the file listing screen.
-    static void DGUSLCD_SD_ScrollFilelist(DGUS_VP_Variable &var, void *val_ptr);
-    /// File touched.
-    static void DGUSLCD_SD_FileSelected(DGUS_VP_Variable &var, void *val_ptr);
-    /// start print after confirmation received.
-    static void DGUSLCD_SD_StartPrint(DGUS_VP_Variable &var, void *val_ptr);
-    /// User hit the pause, resume or abort button.
-    static void DGUSLCD_SD_ResumePauseAbort(DGUS_VP_Variable &var, void *val_ptr);
-    /// User confirmed the abort action
-    static void DGUSLCD_SD_ReallyAbort(DGUS_VP_Variable &var, void *val_ptr);
-    /// User hit the tune button
-    static void DGUSLCD_SD_PrintTune(DGUS_VP_Variable &var, void *val_ptr);
-    /// Send a single filename to the display.
-    static void DGUSLCD_SD_SendFilename(DGUS_VP_Variable &var);
-    /// Marlin informed us that a new SD has been inserted.
-    static void SDCardInserted();
-    /// Marlin informed us that the SD Card has been removed().
-    static void SDCardRemoved();
-    /// Marlin informed us about a bad SD Card.
-    static void SDCardError();
-  #endif
-
-  // OK Button the Confirm screen.
-  static void ScreenConfirmedOK(DGUS_VP_Variable &var, void *val_ptr);
-
-  // Update data after went to new screen (by display or by GotoScreen)
-  // remember: store the last-displayed screen, so it can get returned to.
-  // (e.g for pop up messages)
-  static void UpdateNewScreen(DGUSLCD_Screens newscreen, bool popup=false);
-
-  // Recall the remembered screen.
-  static void PopToOldScreen();
-
-  // Make the display show the screen and update all VPs in it.
-  static void GotoScreen(DGUSLCD_Screens screen, bool ispopup = false);
-
-  static void UpdateScreenVPData();
-
-  // Helpers to convert and transfer data to the display.
-  static void DGUSLCD_SendWordValueToDisplay(DGUS_VP_Variable &var);
-  static void DGUSLCD_SendStringToDisplay(DGUS_VP_Variable &var);
-  static void DGUSLCD_SendStringToDisplayPGM(DGUS_VP_Variable &var);
-  static void DGUSLCD_SendTemperaturePID(DGUS_VP_Variable &var);
-  static void DGUSLCD_SendPercentageToDisplay(DGUS_VP_Variable &var);
-  static void DGUSLCD_SendPrintProgressToDisplay(DGUS_VP_Variable &var);
-  static void DGUSLCD_SendPrintTimeToDisplay(DGUS_VP_Variable &var);
-  #if ENABLED(PRINTCOUNTER)
-    static void DGUSLCD_SendPrintAccTimeToDisplay(DGUS_VP_Variable &var);
-    static void DGUSLCD_SendPrintsTotalToDisplay(DGUS_VP_Variable &var);
-  #endif
-  #if HAS_FAN
-    static void DGUSLCD_SendFanStatusToDisplay(DGUS_VP_Variable &var);
-  #endif
-  static void DGUSLCD_SendHeaterStatusToDisplay(DGUS_VP_Variable &var);
-  #if ENABLED(DGUS_UI_WAITING)
-    static void DGUSLCD_SendWaitingStatusToDisplay(DGUS_VP_Variable &var);
-  #endif
-
-  /// Send a value from 0..100 to a variable with a range from 0..255
-  static void DGUSLCD_PercentageToUint8(DGUS_VP_Variable &var, void *val_ptr);
-
-  template<typename T>
-  static void DGUSLCD_SetValueDirectly(DGUS_VP_Variable &var, void *val_ptr) {
-    if (!var.memadr) return;
-    union { unsigned char tmp[sizeof(T)]; T t; } x;
-    unsigned char *ptr = (unsigned char*)val_ptr;
-    LOOP_L_N(i, sizeof(T)) x.tmp[i] = ptr[sizeof(T) - i - 1];
-    *(T*)var.memadr = x.t;
-  }
-
-  /// Send a float value to the display.
-  /// Display will get a 4-byte integer scaled to the number of digits:
-  /// Tell the display the number of digits and it cheats by displaying a dot between...
-  template<unsigned int decimals>
-  static void DGUSLCD_SendFloatAsLongValueToDisplay(DGUS_VP_Variable &var) {
-    if (var.memadr) {
-      float f = *(float *)var.memadr;
-      f *= cpow(10, decimals);
-      union { long l; char lb[4]; } endian;
-
-      char tmp[4];
-      endian.l = f;
-      tmp[0] = endian.lb[3];
-      tmp[1] = endian.lb[2];
-      tmp[2] = endian.lb[1];
-      tmp[3] = endian.lb[0];
-      dgusdisplay.WriteVariable(var.VP, tmp, 4);
-    }
-  }
-
-  /// Send a float value to the display.
-  /// Display will get a 2-byte integer scaled to the number of digits:
-  /// Tell the display the number of digits and it cheats by displaying a dot between...
-  template<unsigned int decimals>
-  static void DGUSLCD_SendFloatAsIntValueToDisplay(DGUS_VP_Variable &var) {
-    if (var.memadr) {
-      float f = *(float *)var.memadr;
-      DEBUG_ECHOLNPAIR_F(" >> ", f, 6);
-      f *= cpow(10, decimals);
-      union { int16_t i; char lb[2]; } endian;
-
-      char tmp[2];
-      endian.i = f;
-      tmp[0] = endian.lb[1];
-      tmp[1] = endian.lb[0];
-      dgusdisplay.WriteVariable(var.VP, tmp, 2);
-    }
-  }
-
-  /// Force an update of all VP on the current screen.
-  static inline void ForceCompleteUpdate() { update_ptr = 0; ScreenComplete = false; }
-  /// Has all VPs sent to the screen
-  static inline bool IsScreenComplete() { return ScreenComplete; }
-
-  static inline DGUSLCD_Screens getCurrentScreen() { return current_screen; }
-
-  static inline void SetupConfirmAction( void (*f)()) { confirm_action_cb = f; }
-
-private:
-  static DGUSLCD_Screens current_screen;  ///< currently on screen
-  static constexpr uint8_t NUM_PAST_SCREENS = 4;
-  static DGUSLCD_Screens past_screens[NUM_PAST_SCREENS]; ///< LIFO with past screens for the "back" button.
-
-  static uint8_t update_ptr;    ///< Last sent entry in the VPList for the actual screen.
-  static uint16_t skipVP;       ///< When updating the screen data, skip this one, because the user is interacting with it.
-  static bool ScreenComplete;   ///< All VPs sent to screen?
-
-  static uint16_t ConfirmVP;    ///< context for confirm screen (VP that will be emulated-sent on "OK").
-
-  #if ENABLED(SDSUPPORT)
-    static int16_t top_file;    ///< file on top of file chooser
-    static int16_t file_to_print; ///< touched file to be confirmed
-  #endif
-
-  static void (*confirm_action_cb)();
-};
-
-extern DGUSScreenVariableHandler ScreenHandler;
-
 /// Find the flash address of a DGUS_VP_Variable for the VP.
 extern const DGUS_VP_Variable* DGUSLCD_FindVPVar(const uint16_t vp);
 
diff --git a/Marlin/src/lcd/extui/lib/dgus/DGUSDisplayDef.h b/Marlin/src/lcd/extui/lib/dgus/DGUSDisplayDef.h
index 7af1ffefa7..39ed3174f0 100644
--- a/Marlin/src/lcd/extui/lib/dgus/DGUSDisplayDef.h
+++ b/Marlin/src/lcd/extui/lib/dgus/DGUSDisplayDef.h
@@ -25,6 +25,8 @@
 
 #include "DGUSVPVariable.h"
 
+#include <stdint.h>
+
 // This file defines the interaction between Marlin and the display firmware.
 
 // information on which screen which VP is displayed
@@ -41,6 +43,8 @@ extern const struct VPMapping VPMap[];
 // List of VPs handled by Marlin / The Display.
 extern const struct DGUS_VP_Variable ListOfVP[];
 
+#include "../../../../inc/MarlinConfig.h"
+
 #if ENABLED(DGUS_LCD_UI_ORIGIN)
   #include "origin/DGUSDisplayDef.h"
 #elif ENABLED(DGUS_LCD_UI_FYSETC)
diff --git a/Marlin/src/lcd/extui/lib/dgus/DGUSScreenHandler.cpp b/Marlin/src/lcd/extui/lib/dgus/DGUSScreenHandler.cpp
new file mode 100644
index 0000000000..6ff5788326
--- /dev/null
+++ b/Marlin/src/lcd/extui/lib/dgus/DGUSScreenHandler.cpp
@@ -0,0 +1,1144 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "../../../../inc/MarlinConfigPre.h"
+
+#if HAS_DGUS_LCD
+
+#include "DGUSScreenHandler.h"
+#include "DGUSDisplay.h"
+#include "DGUSVPVariable.h"
+#include "DGUSDisplayDef.h"
+
+#include "../../ui_api.h"
+#include "../../../../MarlinCore.h"
+#include "../../../../module/temperature.h"
+#include "../../../../module/motion.h"
+#include "../../../../gcode/queue.h"
+#include "../../../../module/planner.h"
+#include "../../../../sd/cardreader.h"
+#include "../../../../libs/duration_t.h"
+#include "../../../../module/printcounter.h"
+
+#if ENABLED(POWER_LOSS_RECOVERY)
+  #include "../../../../feature/powerloss.h"
+#endif
+
+uint16_t DGUSScreenHandler::ConfirmVP;
+
+#if ENABLED(SDSUPPORT)
+  int16_t DGUSScreenHandler::top_file = 0;
+  int16_t DGUSScreenHandler::file_to_print = 0;
+  static ExtUI::FileList filelist;
+#endif
+
+void (*DGUSScreenHandler::confirm_action_cb)() = nullptr;
+
+//DGUSScreenHandler ScreenHandler;
+
+DGUSLCD_Screens DGUSScreenHandler::current_screen;
+DGUSLCD_Screens DGUSScreenHandler::past_screens[NUM_PAST_SCREENS];
+uint8_t DGUSScreenHandler::update_ptr;
+uint16_t DGUSScreenHandler::skipVP;
+bool DGUSScreenHandler::ScreenComplete;
+
+//DGUSDisplay dgusdisplay;
+
+// endianness swap
+uint16_t swap16(const uint16_t value) { return (value & 0xffU) << 8U | (value >> 8U); }
+
+void DGUSScreenHandler::sendinfoscreen(const char* line1, const char* line2, const char* line3, const char* line4, bool l1inflash, bool l2inflash, bool l3inflash, bool l4inflash) {
+  DGUS_VP_Variable ramcopy;
+  if (populate_VPVar(VP_MSGSTR1, &ramcopy)) {
+    ramcopy.memadr = (void*) line1;
+    l1inflash ? DGUSScreenHandler::DGUSLCD_SendStringToDisplayPGM(ramcopy) : DGUSScreenHandler::DGUSLCD_SendStringToDisplay(ramcopy);
+  }
+  if (populate_VPVar(VP_MSGSTR2, &ramcopy)) {
+    ramcopy.memadr = (void*) line2;
+    l2inflash ? DGUSScreenHandler::DGUSLCD_SendStringToDisplayPGM(ramcopy) : DGUSScreenHandler::DGUSLCD_SendStringToDisplay(ramcopy);
+  }
+  if (populate_VPVar(VP_MSGSTR3, &ramcopy)) {
+    ramcopy.memadr = (void*) line3;
+    l3inflash ? DGUSScreenHandler::DGUSLCD_SendStringToDisplayPGM(ramcopy) : DGUSScreenHandler::DGUSLCD_SendStringToDisplay(ramcopy);
+  }
+  if (populate_VPVar(VP_MSGSTR4, &ramcopy)) {
+    ramcopy.memadr = (void*) line4;
+    l4inflash ? DGUSScreenHandler::DGUSLCD_SendStringToDisplayPGM(ramcopy) : DGUSScreenHandler::DGUSLCD_SendStringToDisplay(ramcopy);
+  }
+}
+
+void DGUSScreenHandler::HandleUserConfirmationPopUp(uint16_t VP, const char* line1, const char* line2, const char* line3, const char* line4, bool l1, bool l2, bool l3, bool l4) {
+  if (current_screen == DGUSLCD_SCREEN_CONFIRM) {
+    // Already showing a pop up, so we need to cancel that first.
+    PopToOldScreen();
+  }
+
+  ConfirmVP = VP;
+  sendinfoscreen(line1, line2, line3, line4, l1, l2, l3, l4);
+  ScreenHandler.GotoScreen(DGUSLCD_SCREEN_CONFIRM);
+}
+
+void DGUSScreenHandler::setstatusmessage(const char *msg) {
+  DGUS_VP_Variable ramcopy;
+  if (populate_VPVar(VP_M117, &ramcopy)) {
+    ramcopy.memadr = (void*) msg;
+    DGUSLCD_SendStringToDisplay(ramcopy);
+  }
+}
+
+void DGUSScreenHandler::setstatusmessagePGM(PGM_P const msg) {
+  DGUS_VP_Variable ramcopy;
+  if (populate_VPVar(VP_M117, &ramcopy)) {
+    ramcopy.memadr = (void*) msg;
+    DGUSLCD_SendStringToDisplayPGM(ramcopy);
+  }
+}
+
+// Send an 8 bit or 16 bit value to the display.
+void DGUSScreenHandler::DGUSLCD_SendWordValueToDisplay(DGUS_VP_Variable &var) {
+  if (var.memadr) {
+    //DEBUG_ECHOPAIR(" DGUS_LCD_SendWordValueToDisplay ", var.VP);
+    //DEBUG_ECHOLNPAIR(" data ", *(uint16_t *)var.memadr);
+    uint8_t *tmp = (uint8_t *) var.memadr;
+    uint16_t data_to_send = (tmp[0] << 8);
+    if (var.size >= 1) data_to_send |= tmp[1];
+    dgusdisplay.WriteVariable(var.VP, data_to_send);
+  }
+}
+
+// Send an uint8_t between 0 and 255 to the display, but scale to a percentage (0..100)
+void DGUSScreenHandler::DGUSLCD_SendPercentageToDisplay(DGUS_VP_Variable &var) {
+  if (var.memadr) {
+    //DEBUG_ECHOPAIR(" DGUS_LCD_SendWordValueToDisplay ", var.VP);
+    //DEBUG_ECHOLNPAIR(" data ", *(uint16_t *)var.memadr);
+    uint16_t tmp = *(uint8_t *) var.memadr +1 ; // +1 -> avoid rounding issues for the display.
+    tmp = map(tmp, 0, 255, 0, 100);
+    uint16_t data_to_send = swap16(tmp);
+    dgusdisplay.WriteVariable(var.VP, data_to_send);
+  }
+}
+
+// Send the current print progress to the display.
+void DGUSScreenHandler::DGUSLCD_SendPrintProgressToDisplay(DGUS_VP_Variable &var) {
+  //DEBUG_ECHOPAIR(" DGUSLCD_SendPrintProgressToDisplay ", var.VP);
+  uint16_t tmp = ExtUI::getProgress_percent();
+  //DEBUG_ECHOLNPAIR(" data ", tmp);
+  uint16_t data_to_send = swap16(tmp);
+  dgusdisplay.WriteVariable(var.VP, data_to_send);
+}
+
+// Send the current print time to the display.
+// It is using a hex display for that: It expects BSD coded data in the format xxyyzz
+void DGUSScreenHandler::DGUSLCD_SendPrintTimeToDisplay(DGUS_VP_Variable &var) {
+  duration_t elapsed = print_job_timer.duration();
+  char buf[32];
+  elapsed.toString(buf);
+  dgusdisplay.WriteVariable(VP_PrintTime, buf, var.size, true);
+}
+
+// Send an uint8_t between 0 and 100 to a variable scale to 0..255
+void DGUSScreenHandler::DGUSLCD_PercentageToUint8(DGUS_VP_Variable &var, void *val_ptr) {
+  if (var.memadr) {
+    uint16_t value = swap16(*(uint16_t*)val_ptr);
+    *(uint8_t*)var.memadr = map(constrain(value, 0, 100), 0, 100, 0, 255);
+  }
+}
+
+// Sends a (RAM located) string to the DGUS Display
+// (Note: The DGUS Display does not clear after the \0, you have to
+// overwrite the remainings with spaces.// var.size has the display buffer size!
+void DGUSScreenHandler::DGUSLCD_SendStringToDisplay(DGUS_VP_Variable &var) {
+  char *tmp = (char*) var.memadr;
+  dgusdisplay.WriteVariable(var.VP, tmp, var.size, true);
+}
+
+// Sends a (flash located) string to the DGUS Display
+// (Note: The DGUS Display does not clear after the \0, you have to
+// overwrite the remainings with spaces.// var.size has the display buffer size!
+void DGUSScreenHandler::DGUSLCD_SendStringToDisplayPGM(DGUS_VP_Variable &var) {
+  char *tmp = (char*) var.memadr;
+  dgusdisplay.WriteVariablePGM(var.VP, tmp, var.size, true);
+}
+
+#if HAS_PID_HEATING
+  void DGUSScreenHandler::DGUSLCD_SendTemperaturePID(DGUS_VP_Variable &var) {
+    float value = *(float *)var.memadr;
+    float valuesend = 0;
+    switch (var.VP) {
+      default: return;
+      #if HOTENDS >= 1
+        case VP_E0_PID_P: valuesend = value; break;
+        case VP_E0_PID_I: valuesend = unscalePID_i(value); break;
+        case VP_E0_PID_D: valuesend = unscalePID_d(value); break;
+      #endif
+      #if HOTENDS >= 2
+        case VP_E1_PID_P: valuesend = value; break;
+        case VP_E1_PID_I: valuesend = unscalePID_i(value); break;
+        case VP_E1_PID_D: valuesend = unscalePID_d(value); break;
+      #endif
+      #if HAS_HEATED_BED
+        case VP_BED_PID_P: valuesend = value; break;
+        case VP_BED_PID_I: valuesend = unscalePID_i(value); break;
+        case VP_BED_PID_D: valuesend = unscalePID_d(value); break;
+      #endif
+    }
+
+    valuesend *= cpow(10, 1);
+    union { int16_t i; char lb[2]; } endian;
+
+    char tmp[2];
+    endian.i = valuesend;
+    tmp[0] = endian.lb[1];
+    tmp[1] = endian.lb[0];
+    dgusdisplay.WriteVariable(var.VP, tmp, 2);
+  }
+#endif
+
+#if ENABLED(PRINTCOUNTER)
+
+  // Send the accumulate print time to the display.
+  // It is using a hex display for that: It expects BSD coded data in the format xxyyzz
+  void DGUSScreenHandler::DGUSLCD_SendPrintAccTimeToDisplay(DGUS_VP_Variable &var) {
+    printStatistics state = print_job_timer.getStats();
+    char buf[21];
+    duration_t elapsed = state.printTime;
+    elapsed.toString(buf);
+    dgusdisplay.WriteVariable(VP_PrintAccTime, buf, var.size, true);
+  }
+
+  void DGUSScreenHandler::DGUSLCD_SendPrintsTotalToDisplay(DGUS_VP_Variable &var) {
+    printStatistics state = print_job_timer.getStats();
+    char buf[21];
+    sprintf_P(buf, PSTR("%u"), state.totalPrints);
+    dgusdisplay.WriteVariable(VP_PrintsTotal, buf, var.size, true);
+  }
+
+#endif
+
+// Send fan status value to the display.
+#if HAS_FAN
+  void DGUSScreenHandler::DGUSLCD_SendFanStatusToDisplay(DGUS_VP_Variable &var) {
+    if (var.memadr) {
+      DEBUG_ECHOPAIR(" DGUSLCD_SendFanStatusToDisplay ", var.VP);
+      DEBUG_ECHOLNPAIR(" data ", *(uint8_t *)var.memadr);
+      uint16_t data_to_send = 0;
+      if (*(uint8_t *) var.memadr) data_to_send = 1;
+      data_to_send = swap16(data_to_send);
+      dgusdisplay.WriteVariable(var.VP, data_to_send);
+    }
+  }
+#endif
+
+// Send heater status value to the display.
+void DGUSScreenHandler::DGUSLCD_SendHeaterStatusToDisplay(DGUS_VP_Variable &var) {
+  if (var.memadr) {
+    DEBUG_ECHOPAIR(" DGUSLCD_SendHeaterStatusToDisplay ", var.VP);
+    DEBUG_ECHOLNPAIR(" data ", *(int16_t *)var.memadr);
+    uint16_t data_to_send = 0;
+    if (*(int16_t *) var.memadr) data_to_send = 1;
+    data_to_send = swap16(data_to_send);
+    dgusdisplay.WriteVariable(var.VP, data_to_send);
+  }
+}
+
+#if ENABLED(DGUS_UI_WAITING)
+  void DGUSScreenHandler::DGUSLCD_SendWaitingStatusToDisplay(DGUS_VP_Variable &var) {
+    // In FYSETC UI design there are 10 statuses to loop
+    static uint16_t period = 0;
+    static uint16_t index = 0;
+    //DEBUG_ECHOPAIR(" DGUSLCD_SendWaitingStatusToDisplay ", var.VP);
+    //DEBUG_ECHOLNPAIR(" data ", swap16(index));
+    if (period++ > DGUS_UI_WAITING_STATUS_PERIOD) {
+      dgusdisplay.WriteVariable(var.VP, swap16(index));
+      //DEBUG_ECHOLNPAIR(" data ", swap16(index));
+      if (++index >= DGUS_UI_WAITING_STATUS) index = 0;
+      period = 0;
+    }
+  }
+#endif
+
+#if ENABLED(SDSUPPORT)
+
+  void DGUSScreenHandler::ScreenChangeHookIfSD(DGUS_VP_Variable &var, void *val_ptr) {
+    // default action executed when there is a SD card, but not printing
+    if (ExtUI::isMediaInserted() && !ExtUI::isPrintingFromMedia()) {
+      ScreenChangeHook(var, val_ptr);
+      dgusdisplay.RequestScreen(current_screen);
+      return;
+    }
+
+    // if we are printing, we jump to two screens after the requested one.
+    // This should host e.g a print pause / print abort / print resume dialog.
+    // This concept allows to recycle this hook for other file
+    if (ExtUI::isPrintingFromMedia() && !card.flag.abort_sd_printing) {
+      GotoScreen(DGUSLCD_SCREEN_SDPRINTMANIPULATION);
+      return;
+    }
+
+    // Don't let the user in the dark why there is no reaction.
+    if (!ExtUI::isMediaInserted()) {
+      setstatusmessagePGM(GET_TEXT(MSG_NO_MEDIA));
+      return;
+    }
+    if (card.flag.abort_sd_printing) {
+      setstatusmessagePGM(GET_TEXT(MSG_MEDIA_ABORTING));
+      return;
+    }
+  }
+
+  void DGUSScreenHandler::DGUSLCD_SD_ScrollFilelist(DGUS_VP_Variable& var, void *val_ptr) {
+    auto old_top = top_file;
+    const int16_t scroll = (int16_t)swap16(*(uint16_t*)val_ptr);
+    if (scroll) {
+      top_file += scroll;
+      DEBUG_ECHOPAIR("new topfile calculated:", top_file);
+      if (top_file < 0) {
+        top_file = 0;
+        DEBUG_ECHOLNPGM("Top of filelist reached");
+      }
+      else {
+        int16_t max_top = filelist.count() -  DGUS_SD_FILESPERSCREEN;
+        NOLESS(max_top, 0);
+        NOMORE(top_file, max_top);
+      }
+      DEBUG_ECHOPAIR("new topfile adjusted:", top_file);
+    }
+    else if (!filelist.isAtRootDir()) {
+      filelist.upDir();
+      top_file = 0;
+      ForceCompleteUpdate();
+    }
+
+    if (old_top != top_file) ForceCompleteUpdate();
+  }
+
+  void DGUSScreenHandler::DGUSLCD_SD_FileSelected(DGUS_VP_Variable &var, void *val_ptr) {
+    uint16_t touched_nr = (int16_t)swap16(*(uint16_t*)val_ptr) + top_file;
+    if (touched_nr > filelist.count()) return;
+    if (!filelist.seek(touched_nr)) return;
+    if (filelist.isDir()) {
+      filelist.changeDir(filelist.filename());
+      top_file = 0;
+      ForceCompleteUpdate();
+      return;
+    }
+
+    #if ENABLED(DGUS_PRINT_FILENAME)
+      // Send print filename
+      dgusdisplay.WriteVariable(VP_SD_Print_Filename, filelist.filename(), VP_SD_FileName_LEN, true);
+    #endif
+
+    // Setup Confirmation screen
+    file_to_print = touched_nr;
+    HandleUserConfirmationPopUp(VP_SD_FileSelectConfirm, nullptr, PSTR("Print file"), filelist.filename(), PSTR("from SD Card?"), true, true, false, true);
+  }
+
+  void DGUSScreenHandler::DGUSLCD_SD_StartPrint(DGUS_VP_Variable &var, void *val_ptr) {
+    if (!filelist.seek(file_to_print)) return;
+    ExtUI::printFile(filelist.shortFilename());
+    ScreenHandler.GotoScreen(
+      #if ENABLED(DGUS_LCD_UI_ORIGIN)
+        DGUSLCD_SCREEN_STATUS
+      #else
+        DGUSLCD_SCREEN_SDPRINTMANIPULATION
+      #endif
+    );
+  }
+
+  void DGUSScreenHandler::DGUSLCD_SD_ResumePauseAbort(DGUS_VP_Variable &var, void *val_ptr) {
+    if (!ExtUI::isPrintingFromMedia()) return; // avoid race condition when user stays in this menu and printer finishes.
+    switch (swap16(*(uint16_t*)val_ptr)) {
+      case 0:  // Resume
+        if (ExtUI::isPrintingFromMediaPaused()) ExtUI::resumePrint();
+        break;
+      case 1:  // Pause
+        if (!ExtUI::isPrintingFromMediaPaused()) ExtUI::pausePrint();
+        break;
+      case 2:  // Abort
+        ScreenHandler.HandleUserConfirmationPopUp(VP_SD_AbortPrintConfirmed, nullptr, PSTR("Abort printing"), filelist.filename(), PSTR("?"), true, true, false, true);
+        break;
+    }
+  }
+
+  void DGUSScreenHandler::DGUSLCD_SD_ReallyAbort(DGUS_VP_Variable &var, void *val_ptr) {
+    ExtUI::stopPrint();
+    GotoScreen(DGUSLCD_SCREEN_MAIN);
+  }
+
+  void DGUSScreenHandler::DGUSLCD_SD_PrintTune(DGUS_VP_Variable &var, void *val_ptr) {
+    if (!ExtUI::isPrintingFromMedia()) return; // avoid race condition when user stays in this menu and printer finishes.
+    GotoScreen(DGUSLCD_SCREEN_SDPRINTTUNE);
+  }
+
+  void DGUSScreenHandler::DGUSLCD_SD_SendFilename(DGUS_VP_Variable& var) {
+    uint16_t target_line = (var.VP - VP_SD_FileName0) / VP_SD_FileName_LEN;
+    if (target_line > DGUS_SD_FILESPERSCREEN) return;
+    char tmpfilename[VP_SD_FileName_LEN + 1] = "";
+    var.memadr = (void*)tmpfilename;
+    if (filelist.seek(top_file + target_line))
+      snprintf_P(tmpfilename, VP_SD_FileName_LEN, PSTR("%s%c"), filelist.filename(), filelist.isDir() ? '/' : 0);
+    DGUSLCD_SendStringToDisplay(var);
+  }
+
+  void DGUSScreenHandler::SDCardInserted() {
+    top_file = 0;
+    filelist.refresh();
+    auto cs = ScreenHandler.getCurrentScreen();
+    if (cs == DGUSLCD_SCREEN_MAIN || cs == DGUSLCD_SCREEN_STATUS)
+      ScreenHandler.GotoScreen(DGUSLCD_SCREEN_SDFILELIST);
+  }
+
+  void DGUSScreenHandler::SDCardRemoved() {
+    if (current_screen == DGUSLCD_SCREEN_SDFILELIST
+        || (current_screen == DGUSLCD_SCREEN_CONFIRM && (ConfirmVP == VP_SD_AbortPrintConfirmed || ConfirmVP == VP_SD_FileSelectConfirm))
+        || current_screen == DGUSLCD_SCREEN_SDPRINTMANIPULATION
+    ) ScreenHandler.GotoScreen(DGUSLCD_SCREEN_MAIN);
+  }
+
+  void DGUSScreenHandler::SDCardError() {
+    DGUSScreenHandler::SDCardRemoved();
+    ScreenHandler.sendinfoscreen(PSTR("NOTICE"), nullptr, PSTR("SD card error"), nullptr, true, true, true, true);
+    ScreenHandler.SetupConfirmAction(nullptr);
+    ScreenHandler.GotoScreen(DGUSLCD_SCREEN_POPUP);
+  }
+
+#endif // SDSUPPORT
+
+void DGUSScreenHandler::ScreenConfirmedOK(DGUS_VP_Variable &var, void *val_ptr) {
+  DGUS_VP_Variable ramcopy;
+  if (!populate_VPVar(ConfirmVP, &ramcopy)) return;
+  if (ramcopy.set_by_display_handler) ramcopy.set_by_display_handler(ramcopy, val_ptr);
+}
+
+const uint16_t* DGUSLCD_FindScreenVPMapList(uint8_t screen) {
+  const uint16_t *ret;
+  const struct VPMapping *map = VPMap;
+  while (ret = (uint16_t*) pgm_read_ptr(&(map->VPList))) {
+    if (pgm_read_byte(&(map->screen)) == screen) return ret;
+    map++;
+  }
+  return nullptr;
+}
+
+const DGUS_VP_Variable* DGUSLCD_FindVPVar(const uint16_t vp) {
+  const DGUS_VP_Variable *ret = ListOfVP;
+  do {
+    const uint16_t vpcheck = pgm_read_word(&(ret->VP));
+    if (vpcheck == 0) break;
+    if (vpcheck == vp) return ret;
+    ++ret;
+  } while (1);
+
+  DEBUG_ECHOLNPAIR("FindVPVar NOT FOUND ", vp);
+  return nullptr;
+}
+
+void DGUSScreenHandler::ScreenChangeHookIfIdle(DGUS_VP_Variable &var, void *val_ptr) {
+  if (!ExtUI::isPrinting()) {
+    ScreenChangeHook(var, val_ptr);
+    dgusdisplay.RequestScreen(current_screen);
+  }
+}
+
+void DGUSScreenHandler::ScreenChangeHook(DGUS_VP_Variable &var, void *val_ptr) {
+  uint8_t *tmp = (uint8_t*)val_ptr;
+
+  // The keycode in target is coded as <from-frame><to-frame>, so 0x0100A means
+  // from screen 1 (main) to 10 (temperature). DGUSLCD_SCREEN_POPUP is special,
+  // meaning "return to previous screen"
+  DGUSLCD_Screens target = (DGUSLCD_Screens)tmp[1];
+
+  if (target == DGUSLCD_SCREEN_POPUP) {
+    // special handling for popup is to return to previous menu
+    if (current_screen == DGUSLCD_SCREEN_POPUP && confirm_action_cb) confirm_action_cb();
+    PopToOldScreen();
+    return;
+  }
+
+  UpdateNewScreen(target);
+
+  #ifdef DEBUG_DGUSLCD
+    if (!DGUSLCD_FindScreenVPMapList(target)) DEBUG_ECHOLNPAIR("WARNING: No screen Mapping found for ", target);
+  #endif
+}
+
+void DGUSScreenHandler::HandleAllHeatersOff(DGUS_VP_Variable &var, void *val_ptr) {
+  thermalManager.disable_all_heaters();
+  ScreenHandler.ForceCompleteUpdate(); // hint to send all data.
+}
+
+void DGUSScreenHandler::HandleTemperatureChanged(DGUS_VP_Variable &var, void *val_ptr) {
+  uint16_t newvalue = swap16(*(uint16_t*)val_ptr);
+  uint16_t acceptedvalue;
+
+  switch (var.VP) {
+    default: return;
+    #if HOTENDS >= 1
+      case VP_T_E0_Set:
+        thermalManager.setTargetHotend(newvalue, 0);
+        acceptedvalue = thermalManager.temp_hotend[0].target;
+        break;
+    #endif
+    #if HOTENDS >= 2
+      case VP_T_E1_Set:
+        thermalManager.setTargetHotend(newvalue, 1);
+        acceptedvalue = thermalManager.temp_hotend[1].target;
+      break;
+    #endif
+    #if HAS_HEATED_BED
+      case VP_T_Bed_Set:
+        thermalManager.setTargetBed(newvalue);
+        acceptedvalue = thermalManager.temp_bed.target;
+        break;
+    #endif
+  }
+
+  // reply to display the new value to update the view if the new value was rejected by the Thermal Manager.
+  if (newvalue != acceptedvalue && var.send_to_display_handler) var.send_to_display_handler(var);
+  ScreenHandler.skipVP = var.VP; // don't overwrite value the next update time as the display might autoincrement in parallel
+}
+
+void DGUSScreenHandler::HandleFlowRateChanged(DGUS_VP_Variable &var, void *val_ptr) {
+  #if EXTRUDERS
+    uint16_t newvalue = swap16(*(uint16_t*)val_ptr);
+    uint8_t target_extruder;
+    switch (var.VP) {
+      default: return;
+      #if HOTENDS >= 1
+        case VP_Flowrate_E0: target_extruder = 0; break;
+      #endif
+      #if HOTENDS >= 2
+        case VP_Flowrate_E1: target_extruder = 1; break;
+      #endif
+    }
+
+    planner.set_flow(target_extruder, newvalue);
+    ScreenHandler.skipVP = var.VP; // don't overwrite value the next update time as the display might autoincrement in parallel
+  #else
+    UNUSED(var); UNUSED(val_ptr);
+  #endif
+}
+
+void DGUSScreenHandler::HandleManualExtrude(DGUS_VP_Variable &var, void *val_ptr) {
+  DEBUG_ECHOLNPGM("HandleManualExtrude");
+
+  int16_t movevalue = swap16(*(uint16_t*)val_ptr);
+  float target = movevalue * 0.01f;
+  ExtUI::extruder_t target_extruder;
+
+  switch (var.VP) {
+    #if HOTENDS >= 1
+      case VP_MOVE_E0: target_extruder = ExtUI::extruder_t::E0; break;
+    #endif
+    #if HOTENDS >= 2
+      case VP_MOVE_E1: target_extruder = ExtUI::extruder_t::E1; break;
+    #endif
+    default: return;
+  }
+
+  target += ExtUI::getAxisPosition_mm(target_extruder);
+  ExtUI::setAxisPosition_mm(target, target_extruder);
+  skipVP = var.VP;
+}
+
+#if ENABLED(DGUS_UI_MOVE_DIS_OPTION)
+  void DGUSScreenHandler::HandleManualMoveOption(DGUS_VP_Variable &var, void *val_ptr) {
+    DEBUG_ECHOLNPGM("HandleManualMoveOption");
+    *(uint16_t*)var.memadr = swap16(*(uint16_t*)val_ptr);
+  }
+#endif
+
+void DGUSScreenHandler::HandleManualMove(DGUS_VP_Variable &var, void *val_ptr) {
+  DEBUG_ECHOLNPGM("HandleManualMove");
+
+  int16_t movevalue = swap16(*(uint16_t*)val_ptr);
+  #if ENABLED(DGUS_UI_MOVE_DIS_OPTION)
+    if (movevalue) {
+      const uint16_t choice = *(uint16_t*)var.memadr;
+      movevalue = movevalue < 0 ? -choice : choice;
+    }
+  #endif
+  char axiscode;
+  unsigned int speed = 1500;  //FIXME: get default feedrate for manual moves, dont hardcode.
+
+  switch (var.VP) {
+    default: return;
+
+    case VP_MOVE_X:
+      axiscode = 'X';
+      if (!ExtUI::canMove(ExtUI::axis_t::X)) goto cannotmove;
+      break;
+
+    case VP_MOVE_Y:
+      axiscode = 'Y';
+      if (!ExtUI::canMove(ExtUI::axis_t::Y)) goto cannotmove;
+      break;
+
+    case VP_MOVE_Z:
+      axiscode = 'Z';
+      speed = 300; // default to 5mm/s
+      if (!ExtUI::canMove(ExtUI::axis_t::Z)) goto cannotmove;
+      break;
+
+    case VP_HOME_ALL: // only used for homing
+      axiscode = '\0';
+      movevalue = 0; // ignore value sent from display, this VP is _ONLY_ for homing.
+      break;
+  }
+
+  if (!movevalue) {
+    // homing
+    DEBUG_ECHOPAIR(" homing ", axiscode);
+    char buf[6] = "G28 X";
+    buf[4] = axiscode;
+    //DEBUG_ECHOPAIR(" ", buf);
+    queue.enqueue_one_now(buf);
+    //DEBUG_ECHOLNPGM(" ✓");
+    ScreenHandler.ForceCompleteUpdate();
+    return;
+  }
+  else {
+    //movement
+    DEBUG_ECHOPAIR(" move ", axiscode);
+    bool old_relative_mode = relative_mode;
+    if (!relative_mode) {
+      //DEBUG_ECHOPGM(" G91");
+      queue.enqueue_now_P(PSTR("G91"));
+      //DEBUG_ECHOPGM(" ✓ ");
+    }
+    char buf[32];  // G1 X9999.99 F12345
+    unsigned int backup_speed = MMS_TO_MMM(feedrate_mm_s);
+    char sign[]="\0";
+    int16_t value = movevalue / 100;
+    if (movevalue < 0) { value = -value; sign[0] = '-'; }
+    int16_t fraction = ABS(movevalue) % 100;
+    snprintf_P(buf, 32, PSTR("G0 %c%s%d.%02d F%d"), axiscode, sign, value, fraction, speed);
+    //DEBUG_ECHOPAIR(" ", buf);
+    queue.enqueue_one_now(buf);
+    //DEBUG_ECHOLNPGM(" ✓ ");
+    if (backup_speed != speed) {
+      snprintf_P(buf, 32, PSTR("G0 F%d"), backup_speed);
+      queue.enqueue_one_now(buf);
+      //DEBUG_ECHOPAIR(" ", buf);
+    }
+    //while (!enqueue_and_echo_command(buf)) idle();
+    //DEBUG_ECHOLNPGM(" ✓ ");
+    if (!old_relative_mode) {
+      //DEBUG_ECHOPGM("G90");
+      queue.enqueue_now_P(PSTR("G90"));
+      //DEBUG_ECHOPGM(" ✓ ");
+    }
+  }
+
+  ScreenHandler.ForceCompleteUpdate();
+  DEBUG_ECHOLNPGM("manmv done.");
+  return;
+
+  cannotmove:
+  DEBUG_ECHOLNPAIR(" cannot move ", axiscode);
+  return;
+}
+
+void DGUSScreenHandler::HandleMotorLockUnlock(DGUS_VP_Variable &var, void *val_ptr) {
+  DEBUG_ECHOLNPGM("HandleMotorLockUnlock");
+
+  char buf[4];
+  const int16_t lock = swap16(*(uint16_t*)val_ptr);
+  strcpy_P(buf, lock ? PSTR("M18") : PSTR("M17"));
+
+  //DEBUG_ECHOPAIR(" ", buf);
+  queue.enqueue_one_now(buf);
+}
+
+#if ENABLED(POWER_LOSS_RECOVERY)
+
+  void DGUSScreenHandler::HandlePowerLossRecovery(DGUS_VP_Variable &var, void *val_ptr) {
+    uint16_t value = swap16(*(uint16_t*)val_ptr);
+    if (value) {
+      queue.inject_P(PSTR("M1000"));
+      ScreenHandler.GotoScreen(DGUSLCD_SCREEN_SDPRINTMANIPULATION);
+    }
+    else {
+      recovery.cancel();
+      ScreenHandler.GotoScreen(DGUSLCD_SCREEN_STATUS);
+    }
+  }
+
+#endif
+
+void DGUSScreenHandler::HandleSettings(DGUS_VP_Variable &var, void *val_ptr) {
+  DEBUG_ECHOLNPGM("HandleSettings");
+  uint16_t value = swap16(*(uint16_t*)val_ptr);
+  switch (value) {
+    default: break;
+    case 1:
+      TERN_(PRINTCOUNTER, print_job_timer.initStats());
+      queue.inject_P(PSTR("M502\nM500"));
+      break;
+    case 2: queue.inject_P(PSTR("M501")); break;
+    case 3: queue.inject_P(PSTR("M500")); break;
+  }
+}
+
+void DGUSScreenHandler::HandleStepPerMMChanged(DGUS_VP_Variable &var, void *val_ptr) {
+  DEBUG_ECHOLNPGM("HandleStepPerMMChanged");
+
+  uint16_t value_raw = swap16(*(uint16_t*)val_ptr);
+  DEBUG_ECHOLNPAIR("value_raw:", value_raw);
+  float value = (float)value_raw/10;
+  ExtUI::axis_t axis;
+  switch (var.VP) {
+    case VP_X_STEP_PER_MM: axis = ExtUI::axis_t::X; break;
+    case VP_Y_STEP_PER_MM: axis = ExtUI::axis_t::Y; break;
+    case VP_Z_STEP_PER_MM: axis = ExtUI::axis_t::Z; break;
+    default: return;
+  }
+  DEBUG_ECHOLNPAIR_F("value:", value);
+  ExtUI::setAxisSteps_per_mm(value, axis);
+  DEBUG_ECHOLNPAIR_F("value_set:", ExtUI::getAxisSteps_per_mm(axis));
+  ScreenHandler.skipVP = var.VP; // don't overwrite value the next update time as the display might autoincrement in parallel
+  return;
+}
+
+void DGUSScreenHandler::HandleStepPerMMExtruderChanged(DGUS_VP_Variable &var, void *val_ptr) {
+  DEBUG_ECHOLNPGM("HandleStepPerMMExtruderChanged");
+
+  uint16_t value_raw = swap16(*(uint16_t*)val_ptr);
+  DEBUG_ECHOLNPAIR("value_raw:", value_raw);
+  float value = (float)value_raw/10;
+  ExtUI::extruder_t extruder;
+  switch (var.VP) {
+    default: return;
+    #if HOTENDS >= 1
+      case VP_E0_STEP_PER_MM: extruder = ExtUI::extruder_t::E0; break;
+    #endif
+    #if HOTENDS >= 2
+      case VP_E1_STEP_PER_MM: extruder = ExtUI::extruder_t::E1; break;
+    #endif
+  }
+  DEBUG_ECHOLNPAIR_F("value:", value);
+  ExtUI::setAxisSteps_per_mm(value,extruder);
+  DEBUG_ECHOLNPAIR_F("value_set:", ExtUI::getAxisSteps_per_mm(extruder));
+  ScreenHandler.skipVP = var.VP; // don't overwrite value the next update time as the display might autoincrement in parallel
+  return;
+}
+
+#if HAS_PID_HEATING
+  void DGUSScreenHandler::HandleTemperaturePIDChanged(DGUS_VP_Variable &var, void *val_ptr) {
+    uint16_t rawvalue = swap16(*(uint16_t*)val_ptr);
+    DEBUG_ECHOLNPAIR("V1:", rawvalue);
+    float value = (float)rawvalue / 10;
+    DEBUG_ECHOLNPAIR("V2:", value);
+    float newvalue = 0;
+
+    switch (var.VP) {
+      default: return;
+      #if HOTENDS >= 1
+        case VP_E0_PID_P: newvalue = value; break;
+        case VP_E0_PID_I: newvalue = scalePID_i(value); break;
+        case VP_E0_PID_D: newvalue = scalePID_d(value); break;
+      #endif
+      #if HOTENDS >= 2
+        case VP_E1_PID_P: newvalue = value; break;
+        case VP_E1_PID_I: newvalue = scalePID_i(value); break;
+        case VP_E1_PID_D: newvalue = scalePID_d(value); break;
+      #endif
+      #if HAS_HEATED_BED
+        case VP_BED_PID_P: newvalue = value; break;
+        case VP_BED_PID_I: newvalue = scalePID_i(value); break;
+        case VP_BED_PID_D: newvalue = scalePID_d(value); break;
+      #endif
+    }
+
+    DEBUG_ECHOLNPAIR_F("V3:", newvalue);
+    *(float *)var.memadr = newvalue;
+    ScreenHandler.skipVP = var.VP; // don't overwrite value the next update time as the display might autoincrement in parallel
+  }
+
+  void DGUSScreenHandler::HandlePIDAutotune(DGUS_VP_Variable &var, void *val_ptr) {
+    DEBUG_ECHOLNPGM("HandlePIDAutotune");
+
+    char buf[32] = {0};
+
+    switch (var.VP) {
+      default: break;
+      #if ENABLED(PIDTEMP)
+        #if HOTENDS >= 1
+          case VP_PID_AUTOTUNE_E0: // Autotune Extruder 0
+            sprintf(buf, "M303 E%d C5 S210 U1", ExtUI::extruder_t::E0);
+            break;
+        #endif
+        #if HOTENDS >= 2
+          case VP_PID_AUTOTUNE_E1:
+            sprintf(buf, "M303 E%d C5 S210 U1", ExtUI::extruder_t::E1);
+            break;
+        #endif
+      #endif
+      #if ENABLED(PIDTEMPBED)
+        case VP_PID_AUTOTUNE_BED:
+          sprintf(buf, "M303 E-1 C5 S70 U1");
+          break;
+      #endif
+    }
+
+    if (buf[0]) queue.enqueue_one_now(buf);
+
+    #if ENABLED(DGUS_UI_WAITING)
+      sendinfoscreen(PSTR("PID is autotuning"), PSTR("please wait"), NUL_STR, NUL_STR, true, true, true, true);
+      GotoScreen(DGUSLCD_SCREEN_WAITING);
+    #endif
+  }
+#endif
+
+#if HAS_BED_PROBE
+  void DGUSScreenHandler::HandleProbeOffsetZChanged(DGUS_VP_Variable &var, void *val_ptr) {
+    DEBUG_ECHOLNPGM("HandleProbeOffsetZChanged");
+
+    const float offset = float(int16_t(swap16(*(uint16_t*)val_ptr))) / 100.0f;
+    ExtUI::setZOffset_mm(offset);
+    ScreenHandler.skipVP = var.VP; // don't overwrite value the next update time as the display might autoincrement in parallel
+    return;
+  }
+#endif
+
+#if ENABLED(BABYSTEPPING)
+  void DGUSScreenHandler::HandleLiveAdjustZ(DGUS_VP_Variable &var, void *val_ptr) {
+    DEBUG_ECHOLNPGM("HandleLiveAdjustZ");
+
+    int16_t flag = swap16(*(uint16_t*)val_ptr);
+    int16_t steps = flag ? -20 : 20;
+    ExtUI::smartAdjustAxis_steps(steps, ExtUI::axis_t::Z, true);
+    ScreenHandler.ForceCompleteUpdate();
+    return;
+  }
+#endif
+
+#if HAS_FAN
+  void DGUSScreenHandler::HandleFanControl(DGUS_VP_Variable &var, void *val_ptr) {
+    DEBUG_ECHOLNPGM("HandleFanControl");
+    *(uint8_t*)var.memadr = *(uint8_t*)var.memadr > 0 ? 0 : 255;
+  }
+#endif
+
+void DGUSScreenHandler::HandleHeaterControl(DGUS_VP_Variable &var, void *val_ptr) {
+  DEBUG_ECHOLNPGM("HandleHeaterControl");
+
+  uint8_t preheat_temp = 0;
+  switch (var.VP) {
+    #if HOTENDS >= 1
+      case VP_E0_CONTROL:
+    #endif
+    #if HOTENDS >= 2
+      case VP_E1_CONTROL:
+    #endif
+    #if HOTENDS >= 3
+      case VP_E2_CONTROL:
+    #endif
+      preheat_temp = PREHEAT_1_TEMP_HOTEND;
+      break;
+
+    case VP_BED_CONTROL:
+      preheat_temp = PREHEAT_1_TEMP_BED;
+      break;
+  }
+
+  *(int16_t*)var.memadr = *(int16_t*)var.memadr > 0 ? 0 : preheat_temp;
+}
+
+#if ENABLED(DGUS_PREHEAT_UI)
+
+  void DGUSScreenHandler::HandlePreheat(DGUS_VP_Variable &var, void *val_ptr) {
+    DEBUG_ECHOLNPGM("HandlePreheat");
+
+    uint8_t e_temp = 0;
+    TERN_(HAS_HEATED_BED, uint8_t bed_temp = 0);
+    const uint16_t preheat_option = swap16(*(uint16_t*)val_ptr);
+    switch (preheat_option) {
+      default:
+      case 0: // Preheat PLA
+        #if defined(PREHEAT_1_TEMP_HOTEND) && defined(PREHEAT_1_TEMP_BED)
+          e_temp = PREHEAT_1_TEMP_HOTEND;
+          TERN_(HAS_HEATED_BED, bed_temp = PREHEAT_1_TEMP_BED);
+        #endif
+        break;
+      case 1: // Preheat ABS
+        #if defined(PREHEAT_2_TEMP_HOTEND) && defined(PREHEAT_2_TEMP_BED)
+          e_temp = PREHEAT_2_TEMP_HOTEND;
+          TERN_(HAS_HEATED_BED, bed_temp = PREHEAT_2_TEMP_BED);
+        #endif
+        break;
+      case 2: // Preheat PET
+        #if defined(PREHEAT_3_TEMP_HOTEND) && defined(PREHEAT_3_TEMP_BED)
+          e_temp = PREHEAT_3_TEMP_HOTEND;
+          TERN_(HAS_HEATED_BED, bed_temp = PREHEAT_3_TEMP_BED);
+        #endif
+        break;
+      case 3: // Preheat FLEX
+        #if defined(PREHEAT_4_TEMP_HOTEND) && defined(PREHEAT_4_TEMP_BED)
+          e_temp = PREHEAT_4_TEMP_HOTEND;
+          TERN_(HAS_HEATED_BED, bed_temp = PREHEAT_4_TEMP_BED);
+        #endif
+        break;
+      case 7: break; // Custom preheat
+      case 9: break; // Cool down
+    }
+
+    switch (var.VP) {
+      default: return;
+      #if HOTENDS >= 1
+        case VP_E0_BED_PREHEAT:
+          thermalManager.setTargetHotend(e_temp, 0);
+          TERN_(HAS_HEATED_BED, thermalManager.setTargetBed(bed_temp));
+          break;
+      #endif
+      #if HOTENDS >= 2
+        case VP_E1_BED_PREHEAT:
+          thermalManager.setTargetHotend(e_temp, 1);
+          TERN_(HAS_HEATED_BED, thermalManager.setTargetBed(bed_temp));
+        break;
+      #endif
+    }
+
+    // Go to the preheat screen to show the heating progress
+    GotoScreen(DGUSLCD_SCREEN_PREHEAT);
+  }
+
+#endif
+
+#if ENABLED(DGUS_FILAMENT_LOADUNLOAD)
+
+  typedef struct  {
+    ExtUI::extruder_t extruder; // which extruder to operate
+    uint8_t action; // load or unload
+    bool heated; // heating done ?
+    float purge_length; // the length to extrude before unload, prevent filament jam
+  } filament_data_t;
+
+  static filament_data_t filament_data;
+
+  void DGUSScreenHandler::HandleFilamentOption(DGUS_VP_Variable &var, void *val_ptr) {
+    DEBUG_ECHOLNPGM("HandleFilamentOption");
+
+    uint8_t e_temp = 0;
+    filament_data.heated = false;
+    uint16_t preheat_option = swap16(*(uint16_t*)val_ptr);
+    if (preheat_option <= 8)          // Load filament type
+      filament_data.action = 1;
+    else if (preheat_option >= 10) {  // Unload filament type
+      preheat_option -= 10;
+      filament_data.action = 2;
+      filament_data.purge_length = DGUS_FILAMENT_PURGE_LENGTH;
+    }
+    else                              // Cancel filament operation
+      filament_data.action = 0;
+
+    switch (preheat_option) {
+      case 0: // Load PLA
+        #ifdef PREHEAT_1_TEMP_HOTEND
+          e_temp = PREHEAT_1_TEMP_HOTEND;
+        #endif
+        break;
+      case 1: // Load ABS
+        TERN_(PREHEAT_2_TEMP_HOTEND, e_temp = PREHEAT_2_TEMP_HOTEND);
+        break;
+      case 2: // Load PET
+        #ifdef PREHEAT_3_TEMP_HOTEND
+          e_temp = PREHEAT_3_TEMP_HOTEND;
+        #endif
+        break;
+      case 3: // Load FLEX
+        #ifdef PREHEAT_4_TEMP_HOTEND
+          e_temp = PREHEAT_4_TEMP_HOTEND;
+        #endif
+        break;
+      case 9: // Cool down
+      default:
+        e_temp = 0;
+        break;
+    }
+
+    if (filament_data.action == 0) { // Go back to utility screen
+      #if HOTENDS >= 1
+        thermalManager.setTargetHotend(e_temp, ExtUI::extruder_t::E0);
+      #endif
+      #if HOTENDS >= 2
+        thermalManager.setTargetHotend(e_temp, ExtUI::extruder_t::E1);
+      #endif
+      GotoScreen(DGUSLCD_SCREEN_UTILITY);
+    }
+    else { // Go to the preheat screen to show the heating progress
+      switch (var.VP) {
+        default: return;
+        #if HOTENDS >= 1
+          case VP_E0_FILAMENT_LOAD_UNLOAD:
+            filament_data.extruder = ExtUI::extruder_t::E0;
+            thermalManager.setTargetHotend(e_temp, filament_data.extruder);
+            break;
+        #endif
+        #if HOTENDS >= 2
+          case VP_E1_FILAMENT_LOAD_UNLOAD:
+            filament_data.extruder = ExtUI::extruder_t::E1;
+            thermalManager.setTargetHotend(e_temp, filament_data.extruder);
+          break;
+        #endif
+      }
+      GotoScreen(DGUSLCD_SCREEN_FILAMENT_HEATING);
+    }
+  }
+
+  void DGUSScreenHandler::HandleFilamentLoadUnload(DGUS_VP_Variable &var) {
+    DEBUG_ECHOLNPGM("HandleFilamentLoadUnload");
+    if (filament_data.action <= 0) return;
+
+    // If we close to the target temperature, we can start load or unload the filament
+    if (thermalManager.hotEnoughToExtrude(filament_data.extruder) && \
+       thermalManager.targetHotEnoughToExtrude(filament_data.extruder)) {
+      float movevalue = DGUS_FILAMENT_LOAD_LENGTH_PER_TIME;
+
+      if (filament_data.action == 1) { // load filament
+        if (!filament_data.heated) {
+          GotoScreen(DGUSLCD_SCREEN_FILAMENT_LOADING);
+          filament_data.heated = true;
+        }
+        movevalue = ExtUI::getAxisPosition_mm(filament_data.extruder)+movevalue;
+      }
+      else { // unload filament
+        if (!filament_data.heated) {
+          GotoScreen(DGUSLCD_SCREEN_FILAMENT_UNLOADING);
+          filament_data.heated = true;
+        }
+        // Before unloading extrude to prevent jamming
+        if (filament_data.purge_length >= 0) {
+          movevalue = ExtUI::getAxisPosition_mm(filament_data.extruder) + movevalue;
+          filament_data.purge_length -= movevalue;
+        }
+        else
+          movevalue = ExtUI::getAxisPosition_mm(filament_data.extruder) - movevalue;
+      }
+      ExtUI::setAxisPosition_mm(movevalue, filament_data.extruder);
+    }
+  }
+#endif
+
+void DGUSScreenHandler::UpdateNewScreen(DGUSLCD_Screens newscreen, bool popup) {
+  DEBUG_ECHOLNPAIR("SetNewScreen: ", newscreen);
+
+  if (!popup) {
+    memmove(&past_screens[1], &past_screens[0], sizeof(past_screens) - 1);
+    past_screens[0] = current_screen;
+  }
+
+  current_screen = newscreen;
+  skipVP = 0;
+  ForceCompleteUpdate();
+}
+
+void DGUSScreenHandler::PopToOldScreen() {
+  DEBUG_ECHOLNPAIR("PopToOldScreen s=", past_screens[0]);
+  GotoScreen(past_screens[0], true);
+  memmove(&past_screens[0], &past_screens[1], sizeof(past_screens) - 1);
+  past_screens[sizeof(past_screens) - 1] = DGUSLCD_SCREEN_MAIN;
+}
+
+void DGUSScreenHandler::UpdateScreenVPData() {
+  DEBUG_ECHOPAIR(" UpdateScreenVPData Screen: ", current_screen);
+
+  const uint16_t *VPList = DGUSLCD_FindScreenVPMapList(current_screen);
+  if (!VPList) {
+    DEBUG_ECHOLNPAIR(" NO SCREEN FOR: ", current_screen);
+    ScreenComplete = true;
+    return;  // nothing to do, likely a bug or boring screen.
+  }
+
+  // Round-robin updating of all VPs.
+  VPList += update_ptr;
+
+  bool sent_one = false;
+  do {
+    uint16_t VP = pgm_read_word(VPList);
+    DEBUG_ECHOPAIR(" VP: ", VP);
+    if (!VP) {
+      update_ptr = 0;
+      DEBUG_ECHOLNPGM(" UpdateScreenVPData done");
+      ScreenComplete = true;
+      return;  // Screen completed.
+    }
+
+    if (VP == skipVP) { skipVP = 0; continue; }
+
+    DGUS_VP_Variable rcpy;
+    if (populate_VPVar(VP, &rcpy)) {
+      uint8_t expected_tx = 6 + rcpy.size;  // expected overhead is 6 bytes + payload.
+      // Send the VP to the display, but try to avoid overrunning the Tx Buffer.
+      // But send at least one VP, to avoid getting stalled.
+      if (rcpy.send_to_display_handler && (!sent_one || expected_tx <= dgusdisplay.GetFreeTxBuffer())) {
+        //DEBUG_ECHOPAIR(" calling handler for ", rcpy.VP);
+        sent_one = true;
+        rcpy.send_to_display_handler(rcpy);
+      }
+      else {
+        //auto x=dgusdisplay.GetFreeTxBuffer();
+        //DEBUG_ECHOLNPAIR(" tx almost full: ", x);
+        //DEBUG_ECHOPAIR(" update_ptr ", update_ptr);
+        ScreenComplete = false;
+        return;  // please call again!
+      }
+    }
+
+  } while (++update_ptr, ++VPList, true);
+}
+
+void DGUSScreenHandler::GotoScreen(DGUSLCD_Screens screen, bool ispopup) {
+  dgusdisplay.RequestScreen(screen);
+  UpdateNewScreen(screen, ispopup);
+}
+
+bool DGUSScreenHandler::loop() {
+  dgusdisplay.loop();
+
+  const millis_t ms = millis();
+  static millis_t next_event_ms = 0;
+
+  if (!IsScreenComplete() || ELAPSED(ms, next_event_ms)) {
+    next_event_ms = ms + DGUS_UPDATE_INTERVAL_MS;
+    UpdateScreenVPData();
+  }
+
+  #if ENABLED(SHOW_BOOTSCREEN)
+    static bool booted = false;
+    if (!booted && TERN0(POWER_LOSS_RECOVERY, recovery.valid()))
+      booted = true;
+    if (!booted && ELAPSED(ms, BOOTSCREEN_TIMEOUT)) {
+      booted = true;
+      GotoScreen(DGUSLCD_SCREEN_MAIN);
+    }
+  #endif
+  return IsScreenComplete();
+}
+
+void DGUSDisplay::RequestScreen(DGUSLCD_Screens screen) {
+  DEBUG_ECHOLNPAIR("GotoScreen ", screen);
+  const unsigned char gotoscreen[] = { 0x5A, 0x01, (unsigned char) (screen >> 8U), (unsigned char) (screen & 0xFFU) };
+  WriteVariable(0x84, gotoscreen, sizeof(gotoscreen));
+}
+
+#endif // HAS_DGUS_LCD
diff --git a/Marlin/src/lcd/extui/lib/dgus/DGUSScreenHandler.h b/Marlin/src/lcd/extui/lib/dgus/DGUSScreenHandler.h
new file mode 100644
index 0000000000..d5b1450e2f
--- /dev/null
+++ b/Marlin/src/lcd/extui/lib/dgus/DGUSScreenHandler.h
@@ -0,0 +1,246 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#include "DGUSDisplay.h"
+#include "DGUSVPVariable.h"
+
+#include "../../../../inc/MarlinConfig.h"
+
+enum DGUSLCD_Screens : uint8_t;
+
+class DGUSScreenHandler {
+public:
+  DGUSScreenHandler() = default;
+
+  static bool loop();
+
+  /// Send all 4 strings that are displayed on the infoscreen, confirmation screen and kill screen
+  /// The bools specifing whether the strings are in RAM or FLASH.
+  static void sendinfoscreen(const char* line1, const char* line2, const char* line3, const char* line4, bool l1inflash, bool l2inflash, bool l3inflash, bool liinflash);
+
+  static void HandleUserConfirmationPopUp(uint16_t ConfirmVP, const char* line1, const char* line2, const char* line3, const char* line4, bool l1inflash, bool l2inflash, bool l3inflash, bool liinflash);
+
+  /// "M117" Message -- msg is a RAM ptr.
+  static void setstatusmessage(const char* msg);
+  /// The same for messages from Flash
+  static void setstatusmessagePGM(PGM_P const msg);
+  // Callback for VP "Display wants to change screen on idle printer"
+  static void ScreenChangeHookIfIdle(DGUS_VP_Variable &var, void *val_ptr);
+  // Callback for VP "Screen has been changed"
+  static void ScreenChangeHook(DGUS_VP_Variable &var, void *val_ptr);
+  // Callback for VP "All Heaters Off"
+  static void HandleAllHeatersOff(DGUS_VP_Variable &var, void *val_ptr);
+  // Hook for "Change this temperature"
+  static void HandleTemperatureChanged(DGUS_VP_Variable &var, void *val_ptr);
+  // Hook for "Change Flowrate"
+  static void HandleFlowRateChanged(DGUS_VP_Variable &var, void *val_ptr);
+  #if ENABLED(DGUS_UI_MOVE_DIS_OPTION)
+    // Hook for manual move option
+    static void HandleManualMoveOption(DGUS_VP_Variable &var, void *val_ptr);
+  #endif
+  // Hook for manual move.
+  static void HandleManualMove(DGUS_VP_Variable &var, void *val_ptr);
+  // Hook for manual extrude.
+  static void HandleManualExtrude(DGUS_VP_Variable &var, void *val_ptr);
+  // Hook for motor lock and unlook
+  static void HandleMotorLockUnlock(DGUS_VP_Variable &var, void *val_ptr);
+  #if ENABLED(POWER_LOSS_RECOVERY)
+    // Hook for power loss recovery.
+    static void HandlePowerLossRecovery(DGUS_VP_Variable &var, void *val_ptr);
+  #endif
+  // Hook for settings
+  static void HandleSettings(DGUS_VP_Variable &var, void *val_ptr);
+  static void HandleStepPerMMChanged(DGUS_VP_Variable &var, void *val_ptr);
+  static void HandleStepPerMMExtruderChanged(DGUS_VP_Variable &var, void *val_ptr);
+  #if HAS_PID_HEATING
+    // Hook for "Change this temperature PID para"
+    static void HandleTemperaturePIDChanged(DGUS_VP_Variable &var, void *val_ptr);
+    // Hook for PID autotune
+    static void HandlePIDAutotune(DGUS_VP_Variable &var, void *val_ptr);
+  #endif
+  #if HAS_BED_PROBE
+    // Hook for "Change probe offset z"
+    static void HandleProbeOffsetZChanged(DGUS_VP_Variable &var, void *val_ptr);
+  #endif
+  #if ENABLED(BABYSTEPPING)
+    // Hook for live z adjust action
+    static void HandleLiveAdjustZ(DGUS_VP_Variable &var, void *val_ptr);
+  #endif
+  #if HAS_FAN
+    // Hook for fan control
+    static void HandleFanControl(DGUS_VP_Variable &var, void *val_ptr);
+  #endif
+  // Hook for heater control
+  static void HandleHeaterControl(DGUS_VP_Variable &var, void *val_ptr);
+  #if ENABLED(DGUS_PREHEAT_UI)
+    // Hook for preheat
+    static void HandlePreheat(DGUS_VP_Variable &var, void *val_ptr);
+  #endif
+  #if ENABLED(DGUS_FILAMENT_LOADUNLOAD)
+    // Hook for filament load and unload filament option
+    static void HandleFilamentOption(DGUS_VP_Variable &var, void *val_ptr);
+    // Hook for filament load and unload
+    static void HandleFilamentLoadUnload(DGUS_VP_Variable &var);
+  #endif
+
+  #if ENABLED(SDSUPPORT)
+    // Callback for VP "Display wants to change screen when there is a SD card"
+    static void ScreenChangeHookIfSD(DGUS_VP_Variable &var, void *val_ptr);
+    /// Scroll buttons on the file listing screen.
+    static void DGUSLCD_SD_ScrollFilelist(DGUS_VP_Variable &var, void *val_ptr);
+    /// File touched.
+    static void DGUSLCD_SD_FileSelected(DGUS_VP_Variable &var, void *val_ptr);
+    /// start print after confirmation received.
+    static void DGUSLCD_SD_StartPrint(DGUS_VP_Variable &var, void *val_ptr);
+    /// User hit the pause, resume or abort button.
+    static void DGUSLCD_SD_ResumePauseAbort(DGUS_VP_Variable &var, void *val_ptr);
+    /// User confirmed the abort action
+    static void DGUSLCD_SD_ReallyAbort(DGUS_VP_Variable &var, void *val_ptr);
+    /// User hit the tune button
+    static void DGUSLCD_SD_PrintTune(DGUS_VP_Variable &var, void *val_ptr);
+    /// Send a single filename to the display.
+    static void DGUSLCD_SD_SendFilename(DGUS_VP_Variable &var);
+    /// Marlin informed us that a new SD has been inserted.
+    static void SDCardInserted();
+    /// Marlin informed us that the SD Card has been removed().
+    static void SDCardRemoved();
+    /// Marlin informed us about a bad SD Card.
+    static void SDCardError();
+  #endif
+
+  // OK Button the Confirm screen.
+  static void ScreenConfirmedOK(DGUS_VP_Variable &var, void *val_ptr);
+
+  // Update data after went to new screen (by display or by GotoScreen)
+  // remember: store the last-displayed screen, so it can get returned to.
+  // (e.g for pop up messages)
+  static void UpdateNewScreen(DGUSLCD_Screens newscreen, bool popup=false);
+
+  // Recall the remembered screen.
+  static void PopToOldScreen();
+
+  // Make the display show the screen and update all VPs in it.
+  static void GotoScreen(DGUSLCD_Screens screen, bool ispopup = false);
+
+  static void UpdateScreenVPData();
+
+  // Helpers to convert and transfer data to the display.
+  static void DGUSLCD_SendWordValueToDisplay(DGUS_VP_Variable &var);
+  static void DGUSLCD_SendStringToDisplay(DGUS_VP_Variable &var);
+  static void DGUSLCD_SendStringToDisplayPGM(DGUS_VP_Variable &var);
+  static void DGUSLCD_SendTemperaturePID(DGUS_VP_Variable &var);
+  static void DGUSLCD_SendPercentageToDisplay(DGUS_VP_Variable &var);
+  static void DGUSLCD_SendPrintProgressToDisplay(DGUS_VP_Variable &var);
+  static void DGUSLCD_SendPrintTimeToDisplay(DGUS_VP_Variable &var);
+  #if ENABLED(PRINTCOUNTER)
+    static void DGUSLCD_SendPrintAccTimeToDisplay(DGUS_VP_Variable &var);
+    static void DGUSLCD_SendPrintsTotalToDisplay(DGUS_VP_Variable &var);
+  #endif
+  #if HAS_FAN
+    static void DGUSLCD_SendFanStatusToDisplay(DGUS_VP_Variable &var);
+  #endif
+  static void DGUSLCD_SendHeaterStatusToDisplay(DGUS_VP_Variable &var);
+  #if ENABLED(DGUS_UI_WAITING)
+    static void DGUSLCD_SendWaitingStatusToDisplay(DGUS_VP_Variable &var);
+  #endif
+
+  /// Send a value from 0..100 to a variable with a range from 0..255
+  static void DGUSLCD_PercentageToUint8(DGUS_VP_Variable &var, void *val_ptr);
+
+  template<typename T>
+  static void DGUSLCD_SetValueDirectly(DGUS_VP_Variable &var, void *val_ptr) {
+    if (!var.memadr) return;
+    union { unsigned char tmp[sizeof(T)]; T t; } x;
+    unsigned char *ptr = (unsigned char*)val_ptr;
+    LOOP_L_N(i, sizeof(T)) x.tmp[i] = ptr[sizeof(T) - i - 1];
+    *(T*)var.memadr = x.t;
+  }
+
+  /// Send a float value to the display.
+  /// Display will get a 4-byte integer scaled to the number of digits:
+  /// Tell the display the number of digits and it cheats by displaying a dot between...
+  template<unsigned int decimals>
+  static void DGUSLCD_SendFloatAsLongValueToDisplay(DGUS_VP_Variable &var) {
+    if (var.memadr) {
+      float f = *(float *)var.memadr;
+      f *= cpow(10, decimals);
+      union { long l; char lb[4]; } endian;
+
+      char tmp[4];
+      endian.l = f;
+      tmp[0] = endian.lb[3];
+      tmp[1] = endian.lb[2];
+      tmp[2] = endian.lb[1];
+      tmp[3] = endian.lb[0];
+      dgusdisplay.WriteVariable(var.VP, tmp, 4);
+    }
+  }
+
+  /// Send a float value to the display.
+  /// Display will get a 2-byte integer scaled to the number of digits:
+  /// Tell the display the number of digits and it cheats by displaying a dot between...
+  template<unsigned int decimals>
+  static void DGUSLCD_SendFloatAsIntValueToDisplay(DGUS_VP_Variable &var) {
+    if (var.memadr) {
+      float f = *(float *)var.memadr;
+      DEBUG_ECHOLNPAIR_F(" >> ", f, 6);
+      f *= cpow(10, decimals);
+      union { int16_t i; char lb[2]; } endian;
+
+      char tmp[2];
+      endian.i = f;
+      tmp[0] = endian.lb[1];
+      tmp[1] = endian.lb[0];
+      dgusdisplay.WriteVariable(var.VP, tmp, 2);
+    }
+  }
+
+  /// Force an update of all VP on the current screen.
+  static inline void ForceCompleteUpdate() { update_ptr = 0; ScreenComplete = false; }
+  /// Has all VPs sent to the screen
+  static inline bool IsScreenComplete() { return ScreenComplete; }
+
+  static inline DGUSLCD_Screens getCurrentScreen() { return current_screen; }
+
+  static inline void SetupConfirmAction( void (*f)()) { confirm_action_cb = f; }
+
+private:
+  static DGUSLCD_Screens current_screen;  ///< currently on screen
+  static constexpr uint8_t NUM_PAST_SCREENS = 4;
+  static DGUSLCD_Screens past_screens[NUM_PAST_SCREENS]; ///< LIFO with past screens for the "back" button.
+
+  static uint8_t update_ptr;    ///< Last sent entry in the VPList for the actual screen.
+  static uint16_t skipVP;       ///< When updating the screen data, skip this one, because the user is interacting with it.
+  static bool ScreenComplete;   ///< All VPs sent to screen?
+
+  static uint16_t ConfirmVP;    ///< context for confirm screen (VP that will be emulated-sent on "OK").
+
+  #if ENABLED(SDSUPPORT)
+    static int16_t top_file;    ///< file on top of file chooser
+    static int16_t file_to_print; ///< touched file to be confirmed
+  #endif
+
+  static void (*confirm_action_cb)();
+};
+
+extern DGUSScreenHandler ScreenHandler;
diff --git a/Marlin/src/lcd/extui/lib/dgus/DGUSVPVariable.h b/Marlin/src/lcd/extui/lib/dgus/DGUSVPVariable.h
index 30555bbb9f..58621cfd57 100644
--- a/Marlin/src/lcd/extui/lib/dgus/DGUSVPVariable.h
+++ b/Marlin/src/lcd/extui/lib/dgus/DGUSVPVariable.h
@@ -21,6 +21,8 @@
  */
 #pragma once
 
+#include <stdint.h>
+
 /**
  * DGUSVPVariable.h
  *
diff --git a/Marlin/src/lcd/extui/lib/dgus/fysetc/DGUSDisplayDef.cpp b/Marlin/src/lcd/extui/lib/dgus/fysetc/DGUSDisplayDef.cpp
index 71ae604344..e5826a9180 100644
--- a/Marlin/src/lcd/extui/lib/dgus/fysetc/DGUSDisplayDef.cpp
+++ b/Marlin/src/lcd/extui/lib/dgus/fysetc/DGUSDisplayDef.cpp
@@ -28,6 +28,7 @@
 
 #include "../DGUSDisplayDef.h"
 #include "../DGUSDisplay.h"
+#include "../DGUSScreenHandler.h"
 
 #include "../../../../../module/temperature.h"
 #include "../../../../../module/motion.h"
@@ -325,159 +326,159 @@ const char MarlinVersion[] PROGMEM = SHORT_BUILD_VERSION;
 
 const struct DGUS_VP_Variable ListOfVP[] PROGMEM = {
   // Helper to detect touch events
-  VPHELPER(VP_SCREENCHANGE, nullptr, DGUSScreenVariableHandler::ScreenChangeHook, nullptr),
-  VPHELPER(VP_SCREENCHANGE_ASK, nullptr, DGUSScreenVariableHandler::ScreenChangeHookIfIdle, nullptr),
+  VPHELPER(VP_SCREENCHANGE, nullptr, ScreenHandler.ScreenChangeHook, nullptr),
+  VPHELPER(VP_SCREENCHANGE_ASK, nullptr, ScreenHandler.ScreenChangeHookIfIdle, nullptr),
   #if ENABLED(SDSUPPORT)
-    VPHELPER(VP_SCREENCHANGE_WHENSD, nullptr, DGUSScreenVariableHandler::ScreenChangeHookIfSD, nullptr),
+    VPHELPER(VP_SCREENCHANGE_WHENSD, nullptr, ScreenHandler.ScreenChangeHookIfSD, nullptr),
   #endif
-  VPHELPER(VP_CONFIRMED, nullptr, DGUSScreenVariableHandler::ScreenConfirmedOK, nullptr),
+  VPHELPER(VP_CONFIRMED, nullptr, ScreenHandler.ScreenConfirmedOK, nullptr),
 
-  VPHELPER(VP_TEMP_ALL_OFF, nullptr, &DGUSScreenVariableHandler::HandleAllHeatersOff, nullptr),
+  VPHELPER(VP_TEMP_ALL_OFF, nullptr, &ScreenHandler.HandleAllHeatersOff, nullptr),
   #if ENABLED(DGUS_UI_MOVE_DIS_OPTION)
-    VPHELPER(VP_MOVE_OPTION, &distanceToMove, &DGUSScreenVariableHandler::HandleManualMoveOption, nullptr),
+    VPHELPER(VP_MOVE_OPTION, &distanceToMove, &ScreenHandler.HandleManualMoveOption, nullptr),
   #endif
   #if ENABLED(DGUS_UI_MOVE_DIS_OPTION)
-    VPHELPER(VP_MOVE_X, &distanceToMove, &DGUSScreenVariableHandler::HandleManualMove, nullptr),
-    VPHELPER(VP_MOVE_Y, &distanceToMove, &DGUSScreenVariableHandler::HandleManualMove, nullptr),
-    VPHELPER(VP_MOVE_Z, &distanceToMove, &DGUSScreenVariableHandler::HandleManualMove, nullptr),
-    VPHELPER(VP_HOME_ALL, &distanceToMove, &DGUSScreenVariableHandler::HandleManualMove, nullptr),
+    VPHELPER(VP_MOVE_X, &distanceToMove, &ScreenHandler.HandleManualMove, nullptr),
+    VPHELPER(VP_MOVE_Y, &distanceToMove, &ScreenHandler.HandleManualMove, nullptr),
+    VPHELPER(VP_MOVE_Z, &distanceToMove, &ScreenHandler.HandleManualMove, nullptr),
+    VPHELPER(VP_HOME_ALL, &distanceToMove, &ScreenHandler.HandleManualMove, nullptr),
   #else
-    VPHELPER(VP_MOVE_X, nullptr, &DGUSScreenVariableHandler::HandleManualMove, nullptr),
-    VPHELPER(VP_MOVE_Y, nullptr, &DGUSScreenVariableHandler::HandleManualMove, nullptr),
-    VPHELPER(VP_MOVE_Z, nullptr, &DGUSScreenVariableHandler::HandleManualMove, nullptr),
-    VPHELPER(VP_HOME_ALL, nullptr, &DGUSScreenVariableHandler::HandleManualMove, nullptr),
+    VPHELPER(VP_MOVE_X, nullptr, &ScreenHandler.HandleManualMove, nullptr),
+    VPHELPER(VP_MOVE_Y, nullptr, &ScreenHandler.HandleManualMove, nullptr),
+    VPHELPER(VP_MOVE_Z, nullptr, &ScreenHandler.HandleManualMove, nullptr),
+    VPHELPER(VP_HOME_ALL, nullptr, &ScreenHandler.HandleManualMove, nullptr),
   #endif
-  VPHELPER(VP_MOTOR_LOCK_UNLOK, nullptr, &DGUSScreenVariableHandler::HandleMotorLockUnlock, nullptr),
+  VPHELPER(VP_MOTOR_LOCK_UNLOK, nullptr, &ScreenHandler.HandleMotorLockUnlock, nullptr),
   #if ENABLED(POWER_LOSS_RECOVERY)
-    VPHELPER(VP_POWER_LOSS_RECOVERY, nullptr, &DGUSScreenVariableHandler::HandlePowerLossRecovery, nullptr),
+    VPHELPER(VP_POWER_LOSS_RECOVERY, nullptr, &ScreenHandler.HandlePowerLossRecovery, nullptr),
   #endif
-  VPHELPER(VP_SETTINGS, nullptr, &DGUSScreenVariableHandler::HandleSettings, nullptr),
+  VPHELPER(VP_SETTINGS, nullptr, &ScreenHandler.HandleSettings, nullptr),
   #if ENABLED(SINGLE_Z_CALIBRATION)
-    VPHELPER(VP_Z_CALIBRATE, nullptr, &DGUSScreenVariableHandler::HandleZCalibration, nullptr),
+    VPHELPER(VP_Z_CALIBRATE, nullptr, &ScreenHandler.HandleZCalibration, nullptr),
   #endif
 
   #if ENABLED(FIRST_LAYER_CAL)
-    VPHELPER(VP_Z_FIRST_LAYER_CAL, nullptr, &DGUSScreenVariableHandler::HandleFirstLayerCal, nullptr),
+    VPHELPER(VP_Z_FIRST_LAYER_CAL, nullptr, &ScreenHandler.HandleFirstLayerCal, nullptr),
   #endif
 
-  { .VP = VP_MARLIN_VERSION, .memadr = (void*)MarlinVersion, .size = VP_MARLIN_VERSION_LEN, .set_by_display_handler = nullptr, .send_to_display_handler =&DGUSScreenVariableHandler::DGUSLCD_SendStringToDisplayPGM },
+  { .VP = VP_MARLIN_VERSION, .memadr = (void*)MarlinVersion, .size = VP_MARLIN_VERSION_LEN, .set_by_display_handler = nullptr, .send_to_display_handler =&ScreenHandler.DGUSLCD_SendStringToDisplayPGM },
   // M117 LCD String (We don't need the string in memory but "just" push it to the display on demand, hence the nullptr
-  { .VP = VP_M117, .memadr = nullptr, .size = VP_M117_LEN, .set_by_display_handler = nullptr, .send_to_display_handler =&DGUSScreenVariableHandler::DGUSLCD_SendStringToDisplay },
+  { .VP = VP_M117, .memadr = nullptr, .size = VP_M117_LEN, .set_by_display_handler = nullptr, .send_to_display_handler =&ScreenHandler.DGUSLCD_SendStringToDisplay },
 
   // Temperature Data
   #if HOTENDS >= 1
-    VPHELPER(VP_T_E0_Is, &thermalManager.temp_hotend[0].celsius, nullptr, DGUSScreenVariableHandler::DGUSLCD_SendFloatAsLongValueToDisplay<0>),
-    VPHELPER(VP_T_E0_Set, &thermalManager.temp_hotend[0].target, DGUSScreenVariableHandler::HandleTemperatureChanged, &DGUSScreenVariableHandler::DGUSLCD_SendWordValueToDisplay),
-    VPHELPER(VP_Flowrate_E0, &planner.flow_percentage[ExtUI::extruder_t::E0], DGUSScreenVariableHandler::HandleFlowRateChanged, &DGUSScreenVariableHandler::DGUSLCD_SendWordValueToDisplay),
-    VPHELPER(VP_EPos, &destination.e, nullptr, DGUSScreenVariableHandler::DGUSLCD_SendFloatAsLongValueToDisplay<2>),
-    VPHELPER(VP_MOVE_E0, nullptr, &DGUSScreenVariableHandler::HandleManualExtrude, nullptr),
-    VPHELPER(VP_E0_CONTROL, &thermalManager.temp_hotend[0].target, &DGUSScreenVariableHandler::HandleHeaterControl, nullptr),
-    VPHELPER(VP_E0_STATUS, &thermalManager.temp_hotend[0].target, nullptr, &DGUSScreenVariableHandler::DGUSLCD_SendHeaterStatusToDisplay),
+    VPHELPER(VP_T_E0_Is, &thermalManager.temp_hotend[0].celsius, nullptr, ScreenHandler.DGUSLCD_SendFloatAsLongValueToDisplay<0>),
+    VPHELPER(VP_T_E0_Set, &thermalManager.temp_hotend[0].target, ScreenHandler.HandleTemperatureChanged, &ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_Flowrate_E0, &planner.flow_percentage[ExtUI::extruder_t::E0], ScreenHandler.HandleFlowRateChanged, &ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_EPos, &destination.e, nullptr, ScreenHandler.DGUSLCD_SendFloatAsLongValueToDisplay<2>),
+    VPHELPER(VP_MOVE_E0, nullptr, &ScreenHandler.HandleManualExtrude, nullptr),
+    VPHELPER(VP_E0_CONTROL, &thermalManager.temp_hotend[0].target, &ScreenHandler.HandleHeaterControl, nullptr),
+    VPHELPER(VP_E0_STATUS, &thermalManager.temp_hotend[0].target, nullptr, &ScreenHandler.DGUSLCD_SendHeaterStatusToDisplay),
     #if ENABLED(DGUS_PREHEAT_UI)
-      VPHELPER(VP_E0_BED_PREHEAT, nullptr, &DGUSScreenVariableHandler::HandlePreheat, nullptr),
+      VPHELPER(VP_E0_BED_PREHEAT, nullptr, &ScreenHandler.HandlePreheat, nullptr),
     #endif
     #if ENABLED(PIDTEMP)
-      VPHELPER(VP_E0_PID_P, &thermalManager.temp_hotend[0].pid.Kp, DGUSScreenVariableHandler::HandleTemperaturePIDChanged, DGUSScreenVariableHandler::DGUSLCD_SendTemperaturePID),
-      VPHELPER(VP_E0_PID_I, &thermalManager.temp_hotend[0].pid.Ki, DGUSScreenVariableHandler::HandleTemperaturePIDChanged, DGUSScreenVariableHandler::DGUSLCD_SendTemperaturePID),
-      VPHELPER(VP_E0_PID_D, &thermalManager.temp_hotend[0].pid.Kd, DGUSScreenVariableHandler::HandleTemperaturePIDChanged, DGUSScreenVariableHandler::DGUSLCD_SendTemperaturePID),
-      VPHELPER(VP_PID_AUTOTUNE_E0, nullptr, &DGUSScreenVariableHandler::HandlePIDAutotune, nullptr),
+      VPHELPER(VP_E0_PID_P, &thermalManager.temp_hotend[0].pid.Kp, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_E0_PID_I, &thermalManager.temp_hotend[0].pid.Ki, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_E0_PID_D, &thermalManager.temp_hotend[0].pid.Kd, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_PID_AUTOTUNE_E0, nullptr, &ScreenHandler.HandlePIDAutotune, nullptr),
     #endif
     #if ENABLED(DGUS_FILAMENT_LOADUNLOAD)
-      VPHELPER(VP_E0_FILAMENT_LOAD_UNLOAD, nullptr, &DGUSScreenVariableHandler::HandleFilamentOption, &DGUSScreenVariableHandler::HandleFilamentLoadUnload),
+      VPHELPER(VP_E0_FILAMENT_LOAD_UNLOAD, nullptr, &ScreenHandler.HandleFilamentOption, &ScreenHandler.HandleFilamentLoadUnload),
     #endif
   #endif
   #if HOTENDS >= 2
-    VPHELPER(VP_T_E1_Is, &thermalManager.temp_hotend[1].celsius, nullptr, DGUSScreenVariableHandler::DGUSLCD_SendFloatAsLongValueToDisplay<0>),
-    VPHELPER(VP_T_E1_Set, &thermalManager.temp_hotend[1].target, DGUSScreenVariableHandler::HandleTemperatureChanged, &DGUSScreenVariableHandler::DGUSLCD_SendWordValueToDisplay),
-    VPHELPER(VP_Flowrate_E1, &planner.flow_percentage[ExtUI::extruder_t::E1], DGUSScreenVariableHandler::HandleFlowRateChanged, &DGUSScreenVariableHandler::DGUSLCD_SendWordValueToDisplay),
-    VPHELPER(VP_MOVE_E1, nullptr, &DGUSScreenVariableHandler::HandleManualExtrude, nullptr),
-    VPHELPER(VP_E1_CONTROL, &thermalManager.temp_hotend[1].target, &DGUSScreenVariableHandler::HandleHeaterControl, nullptr),
-    VPHELPER(VP_E1_STATUS, &thermalManager.temp_hotend[1].target, nullptr, &DGUSScreenVariableHandler::DGUSLCD_SendHeaterStatusToDisplay),
+    VPHELPER(VP_T_E1_Is, &thermalManager.temp_hotend[1].celsius, nullptr, ScreenHandler.DGUSLCD_SendFloatAsLongValueToDisplay<0>),
+    VPHELPER(VP_T_E1_Set, &thermalManager.temp_hotend[1].target, ScreenHandler.HandleTemperatureChanged, &ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_Flowrate_E1, &planner.flow_percentage[ExtUI::extruder_t::E1], ScreenHandler.HandleFlowRateChanged, &ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_MOVE_E1, nullptr, &ScreenHandler.HandleManualExtrude, nullptr),
+    VPHELPER(VP_E1_CONTROL, &thermalManager.temp_hotend[1].target, &ScreenHandler.HandleHeaterControl, nullptr),
+    VPHELPER(VP_E1_STATUS, &thermalManager.temp_hotend[1].target, nullptr, &ScreenHandler.DGUSLCD_SendHeaterStatusToDisplay),
     #if ENABLED(PIDTEMP)
-      VPHELPER(VP_PID_AUTOTUNE_E1, nullptr, &DGUSScreenVariableHandler::HandlePIDAutotune, nullptr),
+      VPHELPER(VP_PID_AUTOTUNE_E1, nullptr, &ScreenHandler.HandlePIDAutotune, nullptr),
     #endif
-    VPHELPER(VP_E1_FILAMENT_LOAD_UNLOAD, nullptr, &DGUSScreenVariableHandler::HandleFilamentOption, &DGUSScreenVariableHandler::HandleFilamentLoadUnload),
+    VPHELPER(VP_E1_FILAMENT_LOAD_UNLOAD, nullptr, &ScreenHandler.HandleFilamentOption, &ScreenHandler.HandleFilamentLoadUnload),
   #endif
   #if HAS_HEATED_BED
-    VPHELPER(VP_T_Bed_Is, &thermalManager.temp_bed.celsius, nullptr, DGUSScreenVariableHandler::DGUSLCD_SendFloatAsLongValueToDisplay<0>),
-    VPHELPER(VP_T_Bed_Set, &thermalManager.temp_bed.target, DGUSScreenVariableHandler::HandleTemperatureChanged, &DGUSScreenVariableHandler::DGUSLCD_SendWordValueToDisplay),
-    VPHELPER(VP_BED_CONTROL, &thermalManager.temp_bed.target, &DGUSScreenVariableHandler::HandleHeaterControl, nullptr),
-    VPHELPER(VP_BED_STATUS, &thermalManager.temp_bed.target, nullptr, &DGUSScreenVariableHandler::DGUSLCD_SendHeaterStatusToDisplay),
+    VPHELPER(VP_T_Bed_Is, &thermalManager.temp_bed.celsius, nullptr, ScreenHandler.DGUSLCD_SendFloatAsLongValueToDisplay<0>),
+    VPHELPER(VP_T_Bed_Set, &thermalManager.temp_bed.target, ScreenHandler.HandleTemperatureChanged, &ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_BED_CONTROL, &thermalManager.temp_bed.target, &ScreenHandler.HandleHeaterControl, nullptr),
+    VPHELPER(VP_BED_STATUS, &thermalManager.temp_bed.target, nullptr, &ScreenHandler.DGUSLCD_SendHeaterStatusToDisplay),
     #if ENABLED(PIDTEMPBED)
-      VPHELPER(VP_BED_PID_P, &thermalManager.temp_bed.pid.Kp, DGUSScreenVariableHandler::HandleTemperaturePIDChanged, DGUSScreenVariableHandler::DGUSLCD_SendTemperaturePID),
-      VPHELPER(VP_BED_PID_I, &thermalManager.temp_bed.pid.Ki, DGUSScreenVariableHandler::HandleTemperaturePIDChanged, DGUSScreenVariableHandler::DGUSLCD_SendTemperaturePID),
-      VPHELPER(VP_BED_PID_D, &thermalManager.temp_bed.pid.Kd, DGUSScreenVariableHandler::HandleTemperaturePIDChanged, DGUSScreenVariableHandler::DGUSLCD_SendTemperaturePID),
-      VPHELPER(VP_PID_AUTOTUNE_BED, nullptr, &DGUSScreenVariableHandler::HandlePIDAutotune, nullptr),
+      VPHELPER(VP_BED_PID_P, &thermalManager.temp_bed.pid.Kp, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_BED_PID_I, &thermalManager.temp_bed.pid.Ki, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_BED_PID_D, &thermalManager.temp_bed.pid.Kd, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_PID_AUTOTUNE_BED, nullptr, &ScreenHandler.HandlePIDAutotune, nullptr),
     #endif
   #endif
 
   // Fan Data
   #if HAS_FAN
     #define FAN_VPHELPER(N) \
-      VPHELPER(VP_Fan##N##_Percentage, &thermalManager.fan_speed[N], DGUSScreenVariableHandler::DGUSLCD_PercentageToUint8, &DGUSScreenVariableHandler::DGUSLCD_SendPercentageToDisplay), \
-      VPHELPER(VP_FAN##N##_CONTROL, &thermalManager.fan_speed[N], &DGUSScreenVariableHandler::HandleFanControl, nullptr), \
-      VPHELPER(VP_FAN##N##_STATUS, &thermalManager.fan_speed[N], nullptr, &DGUSScreenVariableHandler::DGUSLCD_SendFanStatusToDisplay),
+      VPHELPER(VP_Fan##N##_Percentage, &thermalManager.fan_speed[N], ScreenHandler.DGUSLCD_PercentageToUint8, &ScreenHandler.DGUSLCD_SendPercentageToDisplay), \
+      VPHELPER(VP_FAN##N##_CONTROL, &thermalManager.fan_speed[N], &ScreenHandler.HandleFanControl, nullptr), \
+      VPHELPER(VP_FAN##N##_STATUS, &thermalManager.fan_speed[N], nullptr, &ScreenHandler.DGUSLCD_SendFanStatusToDisplay),
     REPEAT(FAN_COUNT, FAN_VPHELPER)
   #endif
 
   // Feedrate
-  VPHELPER(VP_Feedrate_Percentage, &feedrate_percentage, DGUSScreenVariableHandler::DGUSLCD_SetValueDirectly<int16_t>, &DGUSScreenVariableHandler::DGUSLCD_SendWordValueToDisplay ),
+  VPHELPER(VP_Feedrate_Percentage, &feedrate_percentage, ScreenHandler.DGUSLCD_SetValueDirectly<int16_t>, &ScreenHandler.DGUSLCD_SendWordValueToDisplay ),
 
   // Position Data
-  VPHELPER(VP_XPos, &current_position.x, nullptr, DGUSScreenVariableHandler::DGUSLCD_SendFloatAsLongValueToDisplay<2>),
-  VPHELPER(VP_YPos, &current_position.y, nullptr, DGUSScreenVariableHandler::DGUSLCD_SendFloatAsLongValueToDisplay<2>),
-  VPHELPER(VP_ZPos, &current_position.z, nullptr, DGUSScreenVariableHandler::DGUSLCD_SendFloatAsLongValueToDisplay<2>),
+  VPHELPER(VP_XPos, &current_position.x, nullptr, ScreenHandler.DGUSLCD_SendFloatAsLongValueToDisplay<2>),
+  VPHELPER(VP_YPos, &current_position.y, nullptr, ScreenHandler.DGUSLCD_SendFloatAsLongValueToDisplay<2>),
+  VPHELPER(VP_ZPos, &current_position.z, nullptr, ScreenHandler.DGUSLCD_SendFloatAsLongValueToDisplay<2>),
 
   // Print Progress
-  VPHELPER(VP_PrintProgress_Percentage, nullptr, nullptr, DGUSScreenVariableHandler::DGUSLCD_SendPrintProgressToDisplay ),
+  VPHELPER(VP_PrintProgress_Percentage, nullptr, nullptr, ScreenHandler.DGUSLCD_SendPrintProgressToDisplay ),
 
   // Print Time
-  VPHELPER_STR(VP_PrintTime, nullptr, VP_PrintTime_LEN, nullptr, DGUSScreenVariableHandler::DGUSLCD_SendPrintTimeToDisplay),
+  VPHELPER_STR(VP_PrintTime, nullptr, VP_PrintTime_LEN, nullptr, ScreenHandler.DGUSLCD_SendPrintTimeToDisplay),
   #if ENABLED(PRINTCOUNTER)
-    VPHELPER_STR(VP_PrintAccTime, nullptr, VP_PrintAccTime_LEN, nullptr, DGUSScreenVariableHandler::DGUSLCD_SendPrintAccTimeToDisplay),
-    VPHELPER_STR(VP_PrintsTotal, nullptr, VP_PrintsTotal_LEN, nullptr, DGUSScreenVariableHandler::DGUSLCD_SendPrintsTotalToDisplay),
+    VPHELPER_STR(VP_PrintAccTime, nullptr, VP_PrintAccTime_LEN, nullptr, ScreenHandler.DGUSLCD_SendPrintAccTimeToDisplay),
+    VPHELPER_STR(VP_PrintsTotal, nullptr, VP_PrintsTotal_LEN, nullptr, ScreenHandler.DGUSLCD_SendPrintsTotalToDisplay),
   #endif
 
-  VPHELPER(VP_X_STEP_PER_MM, &planner.settings.axis_steps_per_mm[X_AXIS], DGUSScreenVariableHandler::HandleStepPerMMChanged, DGUSScreenVariableHandler::DGUSLCD_SendFloatAsIntValueToDisplay<1>),
-  VPHELPER(VP_Y_STEP_PER_MM, &planner.settings.axis_steps_per_mm[Y_AXIS], DGUSScreenVariableHandler::HandleStepPerMMChanged, DGUSScreenVariableHandler::DGUSLCD_SendFloatAsIntValueToDisplay<1>),
-  VPHELPER(VP_Z_STEP_PER_MM, &planner.settings.axis_steps_per_mm[Z_AXIS], DGUSScreenVariableHandler::HandleStepPerMMChanged, DGUSScreenVariableHandler::DGUSLCD_SendFloatAsIntValueToDisplay<1>),
+  VPHELPER(VP_X_STEP_PER_MM, &planner.settings.axis_steps_per_mm[X_AXIS], ScreenHandler.HandleStepPerMMChanged, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<1>),
+  VPHELPER(VP_Y_STEP_PER_MM, &planner.settings.axis_steps_per_mm[Y_AXIS], ScreenHandler.HandleStepPerMMChanged, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<1>),
+  VPHELPER(VP_Z_STEP_PER_MM, &planner.settings.axis_steps_per_mm[Z_AXIS], ScreenHandler.HandleStepPerMMChanged, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<1>),
   #if HOTENDS >= 1
-    VPHELPER(VP_E0_STEP_PER_MM, &planner.settings.axis_steps_per_mm[E_AXIS_N(0)], DGUSScreenVariableHandler::HandleStepPerMMExtruderChanged, DGUSScreenVariableHandler::DGUSLCD_SendFloatAsIntValueToDisplay<1>),
+    VPHELPER(VP_E0_STEP_PER_MM, &planner.settings.axis_steps_per_mm[E_AXIS_N(0)], ScreenHandler.HandleStepPerMMExtruderChanged, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<1>),
   #endif
   #if HOTENDS >= 2
-    VPHELPER(VP_E1_STEP_PER_MM, &planner.settings.axis_steps_per_mm[E_AXIS_N(1)], DGUSScreenVariableHandler::HandleStepPerMMExtruderChanged, DGUSScreenVariableHandler::DGUSLCD_SendFloatAsIntValueToDisplay<1>),
+    VPHELPER(VP_E1_STEP_PER_MM, &planner.settings.axis_steps_per_mm[E_AXIS_N(1)], ScreenHandler.HandleStepPerMMExtruderChanged, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<1>),
   #endif
 
   // SDCard File listing.
   #if ENABLED(SDSUPPORT)
-    VPHELPER(VP_SD_ScrollEvent, nullptr, DGUSScreenVariableHandler::DGUSLCD_SD_ScrollFilelist, nullptr),
-    VPHELPER(VP_SD_FileSelected, nullptr, DGUSScreenVariableHandler::DGUSLCD_SD_FileSelected, nullptr),
-    VPHELPER(VP_SD_FileSelectConfirm, nullptr, DGUSScreenVariableHandler::DGUSLCD_SD_StartPrint, nullptr),
-    VPHELPER_STR(VP_SD_FileName0, nullptr, VP_SD_FileName_LEN, nullptr, DGUSScreenVariableHandler::DGUSLCD_SD_SendFilename),
-    VPHELPER_STR(VP_SD_FileName1, nullptr, VP_SD_FileName_LEN, nullptr, DGUSScreenVariableHandler::DGUSLCD_SD_SendFilename),
-    VPHELPER_STR(VP_SD_FileName2, nullptr, VP_SD_FileName_LEN, nullptr, DGUSScreenVariableHandler::DGUSLCD_SD_SendFilename),
-    VPHELPER_STR(VP_SD_FileName3, nullptr, VP_SD_FileName_LEN, nullptr, DGUSScreenVariableHandler::DGUSLCD_SD_SendFilename),
-    VPHELPER_STR(VP_SD_FileName4, nullptr, VP_SD_FileName_LEN, nullptr, DGUSScreenVariableHandler::DGUSLCD_SD_SendFilename),
-    VPHELPER(VP_SD_ResumePauseAbort, nullptr, DGUSScreenVariableHandler::DGUSLCD_SD_ResumePauseAbort, nullptr),
-    VPHELPER(VP_SD_AbortPrintConfirmed, nullptr, DGUSScreenVariableHandler::DGUSLCD_SD_ReallyAbort, nullptr),
-    VPHELPER(VP_SD_Print_Setting, nullptr, DGUSScreenVariableHandler::DGUSLCD_SD_PrintTune, nullptr),
+    VPHELPER(VP_SD_ScrollEvent, nullptr, ScreenHandler.DGUSLCD_SD_ScrollFilelist, nullptr),
+    VPHELPER(VP_SD_FileSelected, nullptr, ScreenHandler.DGUSLCD_SD_FileSelected, nullptr),
+    VPHELPER(VP_SD_FileSelectConfirm, nullptr, ScreenHandler.DGUSLCD_SD_StartPrint, nullptr),
+    VPHELPER_STR(VP_SD_FileName0, nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename),
+    VPHELPER_STR(VP_SD_FileName1, nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename),
+    VPHELPER_STR(VP_SD_FileName2, nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename),
+    VPHELPER_STR(VP_SD_FileName3, nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename),
+    VPHELPER_STR(VP_SD_FileName4, nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename),
+    VPHELPER(VP_SD_ResumePauseAbort, nullptr, ScreenHandler.DGUSLCD_SD_ResumePauseAbort, nullptr),
+    VPHELPER(VP_SD_AbortPrintConfirmed, nullptr, ScreenHandler.DGUSLCD_SD_ReallyAbort, nullptr),
+    VPHELPER(VP_SD_Print_Setting, nullptr, ScreenHandler.DGUSLCD_SD_PrintTune, nullptr),
     #if HAS_BED_PROBE
-      VPHELPER(VP_SD_Print_ProbeOffsetZ, &probe.offset.z, DGUSScreenVariableHandler::HandleProbeOffsetZChanged, &DGUSScreenVariableHandler::DGUSLCD_SendFloatAsIntValueToDisplay<2>),
+      VPHELPER(VP_SD_Print_ProbeOffsetZ, &probe.offset.z, ScreenHandler.HandleProbeOffsetZChanged, &ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<2>),
       #if ENABLED(BABYSTEPPING)
-        VPHELPER(VP_SD_Print_LiveAdjustZ, nullptr, DGUSScreenVariableHandler::HandleLiveAdjustZ, nullptr),
+        VPHELPER(VP_SD_Print_LiveAdjustZ, nullptr, ScreenHandler.HandleLiveAdjustZ, nullptr),
       #endif
     #endif
   #endif
 
   #if ENABLED(DGUS_UI_WAITING)
-    VPHELPER(VP_WAITING_STATUS, nullptr, nullptr, DGUSScreenVariableHandler::DGUSLCD_SendWaitingStatusToDisplay),
+    VPHELPER(VP_WAITING_STATUS, nullptr, nullptr, ScreenHandler.DGUSLCD_SendWaitingStatusToDisplay),
   #endif
 
   // Messages for the User, shared by the popup and the kill screen. They cant be autouploaded as we do not buffer content.
-  { .VP = VP_MSGSTR1, .memadr = nullptr, .size = VP_MSGSTR1_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &DGUSScreenVariableHandler::DGUSLCD_SendStringToDisplayPGM },
-  { .VP = VP_MSGSTR2, .memadr = nullptr, .size = VP_MSGSTR2_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &DGUSScreenVariableHandler::DGUSLCD_SendStringToDisplayPGM },
-  { .VP = VP_MSGSTR3, .memadr = nullptr, .size = VP_MSGSTR3_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &DGUSScreenVariableHandler::DGUSLCD_SendStringToDisplayPGM },
-  { .VP = VP_MSGSTR4, .memadr = nullptr, .size = VP_MSGSTR4_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &DGUSScreenVariableHandler::DGUSLCD_SendStringToDisplayPGM },
+  { .VP = VP_MSGSTR1, .memadr = nullptr, .size = VP_MSGSTR1_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &ScreenHandler.DGUSLCD_SendStringToDisplayPGM },
+  { .VP = VP_MSGSTR2, .memadr = nullptr, .size = VP_MSGSTR2_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &ScreenHandler.DGUSLCD_SendStringToDisplayPGM },
+  { .VP = VP_MSGSTR3, .memadr = nullptr, .size = VP_MSGSTR3_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &ScreenHandler.DGUSLCD_SendStringToDisplayPGM },
+  { .VP = VP_MSGSTR4, .memadr = nullptr, .size = VP_MSGSTR4_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &ScreenHandler.DGUSLCD_SendStringToDisplayPGM },
 
   VPHELPER(0, 0, 0, 0)  // must be last entry.
 };
diff --git a/Marlin/src/lcd/extui/lib/dgus/hiprecy/DGUSDisplayDef.cpp b/Marlin/src/lcd/extui/lib/dgus/hiprecy/DGUSDisplayDef.cpp
index 62cd67d2cb..d5ac981e5b 100644
--- a/Marlin/src/lcd/extui/lib/dgus/hiprecy/DGUSDisplayDef.cpp
+++ b/Marlin/src/lcd/extui/lib/dgus/hiprecy/DGUSDisplayDef.cpp
@@ -28,6 +28,7 @@
 
 #include "../DGUSDisplayDef.h"
 #include "../DGUSDisplay.h"
+#include "../DGUSScreenHandler.h"
 
 #include "../../../../../module/temperature.h"
 #include "../../../../../module/motion.h"
@@ -328,155 +329,155 @@ const char MarlinVersion[] PROGMEM = SHORT_BUILD_VERSION;
 
 const struct DGUS_VP_Variable ListOfVP[] PROGMEM = {
   // Helper to detect touch events
-  VPHELPER(VP_SCREENCHANGE, nullptr, DGUSScreenVariableHandler::ScreenChangeHook, nullptr),
-  VPHELPER(VP_SCREENCHANGE_ASK, nullptr, DGUSScreenVariableHandler::ScreenChangeHookIfIdle, nullptr),
+  VPHELPER(VP_SCREENCHANGE, nullptr, ScreenHandler.ScreenChangeHook, nullptr),
+  VPHELPER(VP_SCREENCHANGE_ASK, nullptr, ScreenHandler.ScreenChangeHookIfIdle, nullptr),
   #if ENABLED(SDSUPPORT)
-    VPHELPER(VP_SCREENCHANGE_WHENSD, nullptr, DGUSScreenVariableHandler::ScreenChangeHookIfSD, nullptr),
+    VPHELPER(VP_SCREENCHANGE_WHENSD, nullptr, ScreenHandler.ScreenChangeHookIfSD, nullptr),
   #endif
-  VPHELPER(VP_CONFIRMED, nullptr, DGUSScreenVariableHandler::ScreenConfirmedOK, nullptr),
+  VPHELPER(VP_CONFIRMED, nullptr, ScreenHandler.ScreenConfirmedOK, nullptr),
 
-  VPHELPER(VP_TEMP_ALL_OFF, nullptr, &DGUSScreenVariableHandler::HandleAllHeatersOff, nullptr),
+  VPHELPER(VP_TEMP_ALL_OFF, nullptr, &ScreenHandler.HandleAllHeatersOff, nullptr),
 
   #if ENABLED(DGUS_UI_MOVE_DIS_OPTION)
-    VPHELPER(VP_MOVE_OPTION, &distanceToMove, &DGUSScreenVariableHandler::HandleManualMoveOption, nullptr),
+    VPHELPER(VP_MOVE_OPTION, &distanceToMove, &ScreenHandler.HandleManualMoveOption, nullptr),
   #endif
   #if ENABLED(DGUS_UI_MOVE_DIS_OPTION)
-    VPHELPER(VP_MOVE_X, &distanceToMove, &DGUSScreenVariableHandler::HandleManualMove, nullptr),
-    VPHELPER(VP_MOVE_Y, &distanceToMove, &DGUSScreenVariableHandler::HandleManualMove, nullptr),
-    VPHELPER(VP_MOVE_Z, &distanceToMove, &DGUSScreenVariableHandler::HandleManualMove, nullptr),
-    VPHELPER(VP_HOME_ALL, &distanceToMove, &DGUSScreenVariableHandler::HandleManualMove, nullptr),
+    VPHELPER(VP_MOVE_X, &distanceToMove, &ScreenHandler.HandleManualMove, nullptr),
+    VPHELPER(VP_MOVE_Y, &distanceToMove, &ScreenHandler.HandleManualMove, nullptr),
+    VPHELPER(VP_MOVE_Z, &distanceToMove, &ScreenHandler.HandleManualMove, nullptr),
+    VPHELPER(VP_HOME_ALL, &distanceToMove, &ScreenHandler.HandleManualMove, nullptr),
   #else
-    VPHELPER(VP_MOVE_X, nullptr, &DGUSScreenVariableHandler::HandleManualMove, nullptr),
-    VPHELPER(VP_MOVE_Y, nullptr, &DGUSScreenVariableHandler::HandleManualMove, nullptr),
-    VPHELPER(VP_MOVE_Z, nullptr, &DGUSScreenVariableHandler::HandleManualMove, nullptr),
-    VPHELPER(VP_HOME_ALL, nullptr, &DGUSScreenVariableHandler::HandleManualMove, nullptr),
+    VPHELPER(VP_MOVE_X, nullptr, &ScreenHandler.HandleManualMove, nullptr),
+    VPHELPER(VP_MOVE_Y, nullptr, &ScreenHandler.HandleManualMove, nullptr),
+    VPHELPER(VP_MOVE_Z, nullptr, &ScreenHandler.HandleManualMove, nullptr),
+    VPHELPER(VP_HOME_ALL, nullptr, &ScreenHandler.HandleManualMove, nullptr),
   #endif
-  VPHELPER(VP_MOTOR_LOCK_UNLOK, nullptr, &DGUSScreenVariableHandler::HandleMotorLockUnlock, nullptr),
+  VPHELPER(VP_MOTOR_LOCK_UNLOK, nullptr, &ScreenHandler.HandleMotorLockUnlock, nullptr),
   #if ENABLED(POWER_LOSS_RECOVERY)
-    VPHELPER(VP_POWER_LOSS_RECOVERY, nullptr, &DGUSScreenVariableHandler::HandlePowerLossRecovery, nullptr),
+    VPHELPER(VP_POWER_LOSS_RECOVERY, nullptr, &ScreenHandler.HandlePowerLossRecovery, nullptr),
   #endif
-  VPHELPER(VP_SETTINGS, nullptr, &DGUSScreenVariableHandler::HandleSettings, nullptr),
+  VPHELPER(VP_SETTINGS, nullptr, &ScreenHandler.HandleSettings, nullptr),
   #if ENABLED(SINGLE_Z_CALIBRATION)
-    VPHELPER(VP_Z_CALIBRATE, nullptr, &DGUSScreenVariableHandler::HandleZCalibration, nullptr),
+    VPHELPER(VP_Z_CALIBRATE, nullptr, &ScreenHandler.HandleZCalibration, nullptr),
   #endif
   #if ENABLED(FIRST_LAYER_CAL)
-    VPHELPER(VP_Z_FIRST_LAYER_CAL, nullptr, &DGUSScreenVariableHandler::HandleFirstLayerCal, nullptr),
+    VPHELPER(VP_Z_FIRST_LAYER_CAL, nullptr, &ScreenHandler.HandleFirstLayerCal, nullptr),
   #endif
 
-  { .VP = VP_MARLIN_VERSION, .memadr = (void*)MarlinVersion, .size = VP_MARLIN_VERSION_LEN, .set_by_display_handler = nullptr, .send_to_display_handler =&DGUSScreenVariableHandler::DGUSLCD_SendStringToDisplayPGM },
+  { .VP = VP_MARLIN_VERSION, .memadr = (void*)MarlinVersion, .size = VP_MARLIN_VERSION_LEN, .set_by_display_handler = nullptr, .send_to_display_handler =&ScreenHandler.DGUSLCD_SendStringToDisplayPGM },
   // M117 LCD String (We don't need the string in memory but "just" push it to the display on demand, hence the nullptr
-  { .VP = VP_M117, .memadr = nullptr, .size = VP_M117_LEN, .set_by_display_handler = nullptr, .send_to_display_handler =&DGUSScreenVariableHandler::DGUSLCD_SendStringToDisplay },
+  { .VP = VP_M117, .memadr = nullptr, .size = VP_M117_LEN, .set_by_display_handler = nullptr, .send_to_display_handler =&ScreenHandler.DGUSLCD_SendStringToDisplay },
 
   // Temperature Data
   #if HOTENDS >= 1
-    VPHELPER(VP_T_E0_Is, &thermalManager.temp_hotend[0].celsius, nullptr, DGUSScreenVariableHandler::DGUSLCD_SendFloatAsLongValueToDisplay<0>),
-    VPHELPER(VP_T_E0_Set, &thermalManager.temp_hotend[0].target, DGUSScreenVariableHandler::HandleTemperatureChanged, &DGUSScreenVariableHandler::DGUSLCD_SendWordValueToDisplay),
-    VPHELPER(VP_Flowrate_E0, &planner.flow_percentage[ExtUI::extruder_t::E0], DGUSScreenVariableHandler::HandleFlowRateChanged, &DGUSScreenVariableHandler::DGUSLCD_SendWordValueToDisplay),
-    VPHELPER(VP_EPos, &destination.e, nullptr, DGUSScreenVariableHandler::DGUSLCD_SendFloatAsLongValueToDisplay<2>),
-    VPHELPER(VP_MOVE_E0, nullptr, &DGUSScreenVariableHandler::HandleManualExtrude, nullptr),
-    VPHELPER(VP_E0_CONTROL, &thermalManager.temp_hotend[0].target, &DGUSScreenVariableHandler::HandleHeaterControl, nullptr),
-    VPHELPER(VP_E0_STATUS, &thermalManager.temp_hotend[0].target, nullptr, &DGUSScreenVariableHandler::DGUSLCD_SendHeaterStatusToDisplay),
+    VPHELPER(VP_T_E0_Is, &thermalManager.temp_hotend[0].celsius, nullptr, ScreenHandler.DGUSLCD_SendFloatAsLongValueToDisplay<0>),
+    VPHELPER(VP_T_E0_Set, &thermalManager.temp_hotend[0].target, ScreenHandler.HandleTemperatureChanged, &ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_Flowrate_E0, &planner.flow_percentage[ExtUI::extruder_t::E0], ScreenHandler.HandleFlowRateChanged, &ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_EPos, &destination.e, nullptr, ScreenHandler.DGUSLCD_SendFloatAsLongValueToDisplay<2>),
+    VPHELPER(VP_MOVE_E0, nullptr, &ScreenHandler.HandleManualExtrude, nullptr),
+    VPHELPER(VP_E0_CONTROL, &thermalManager.temp_hotend[0].target, &ScreenHandler.HandleHeaterControl, nullptr),
+    VPHELPER(VP_E0_STATUS, &thermalManager.temp_hotend[0].target, nullptr, &ScreenHandler.DGUSLCD_SendHeaterStatusToDisplay),
     #if ENABLED(DGUS_PREHEAT_UI)
-      VPHELPER(VP_E0_BED_PREHEAT, nullptr, &DGUSScreenVariableHandler::HandlePreheat, nullptr),
+      VPHELPER(VP_E0_BED_PREHEAT, nullptr, &ScreenHandler.HandlePreheat, nullptr),
     #endif
     #if ENABLED(DGUS_FILAMENT_LOADUNLOAD)
-      VPHELPER(VP_E0_FILAMENT_LOAD_UNLOAD, nullptr, &DGUSScreenVariableHandler::HandleFilamentOption, &DGUSScreenVariableHandler::HandleFilamentLoadUnload),
+      VPHELPER(VP_E0_FILAMENT_LOAD_UNLOAD, nullptr, &ScreenHandler.HandleFilamentOption, &ScreenHandler.HandleFilamentLoadUnload),
     #endif
     #if ENABLED(PIDTEMP)
-      VPHELPER(VP_E0_PID_P, &thermalManager.temp_hotend[0].pid.Kp, DGUSScreenVariableHandler::HandleTemperaturePIDChanged, DGUSScreenVariableHandler::DGUSLCD_SendTemperaturePID),
-      VPHELPER(VP_E0_PID_I, &thermalManager.temp_hotend[0].pid.Ki, DGUSScreenVariableHandler::HandleTemperaturePIDChanged, DGUSScreenVariableHandler::DGUSLCD_SendTemperaturePID),
-      VPHELPER(VP_E0_PID_D, &thermalManager.temp_hotend[0].pid.Kd, DGUSScreenVariableHandler::HandleTemperaturePIDChanged, DGUSScreenVariableHandler::DGUSLCD_SendTemperaturePID),
-      VPHELPER(VP_PID_AUTOTUNE_E0, nullptr, &DGUSScreenVariableHandler::HandlePIDAutotune, nullptr),
+      VPHELPER(VP_E0_PID_P, &thermalManager.temp_hotend[0].pid.Kp, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_E0_PID_I, &thermalManager.temp_hotend[0].pid.Ki, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_E0_PID_D, &thermalManager.temp_hotend[0].pid.Kd, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_PID_AUTOTUNE_E0, nullptr, &ScreenHandler.HandlePIDAutotune, nullptr),
     #endif
   #endif
   #if HOTENDS >= 2
     VPHELPER(VP_T_E1_Is, &thermalManager.temp_hotend[1].celsius, nullptr, DGUSLCD_SendFloatAsLongValueToDisplay<0>),
-    VPHELPER(VP_T_E1_Set, &thermalManager.temp_hotend[1].target, DGUSScreenVariableHandler::HandleTemperatureChanged, &DGUSScreenVariableHandler::DGUSLCD_SendWordValueToDisplay),
-    VPHELPER(VP_Flowrate_E1, nullptr, DGUSScreenVariableHandler::HandleFlowRateChanged, &DGUSScreenVariableHandler::DGUSLCD_SendWordValueToDisplay),
-    VPHELPER(VP_MOVE_E1, nullptr, &DGUSScreenVariableHandler::HandleManualExtrude, nullptr),
-    VPHELPER(VP_E1_CONTROL, &thermalManager.temp_hotend[1].target, &DGUSScreenVariableHandler::HandleHeaterControl, nullptr),
-    VPHELPER(VP_E1_STATUS, &thermalManager.temp_hotend[1].target, nullptr, &DGUSScreenVariableHandler::DGUSLCD_SendHeaterStatusToDisplay),
+    VPHELPER(VP_T_E1_Set, &thermalManager.temp_hotend[1].target, ScreenHandler.HandleTemperatureChanged, &ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_Flowrate_E1, nullptr, ScreenHandler.HandleFlowRateChanged, &ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_MOVE_E1, nullptr, &ScreenHandler.HandleManualExtrude, nullptr),
+    VPHELPER(VP_E1_CONTROL, &thermalManager.temp_hotend[1].target, &ScreenHandler.HandleHeaterControl, nullptr),
+    VPHELPER(VP_E1_STATUS, &thermalManager.temp_hotend[1].target, nullptr, &ScreenHandler.DGUSLCD_SendHeaterStatusToDisplay),
   #endif
   #if HAS_HEATED_BED
-    VPHELPER(VP_T_Bed_Is, &thermalManager.temp_bed.celsius, nullptr, DGUSScreenVariableHandler::DGUSLCD_SendFloatAsLongValueToDisplay<0>),
-    VPHELPER(VP_T_Bed_Set, &thermalManager.temp_bed.target, DGUSScreenVariableHandler::HandleTemperatureChanged, &DGUSScreenVariableHandler::DGUSLCD_SendWordValueToDisplay),
-    VPHELPER(VP_BED_CONTROL, &thermalManager.temp_bed.target, &DGUSScreenVariableHandler::HandleHeaterControl, nullptr),
-    VPHELPER(VP_BED_STATUS, &thermalManager.temp_bed.target, nullptr, &DGUSScreenVariableHandler::DGUSLCD_SendHeaterStatusToDisplay),
+    VPHELPER(VP_T_Bed_Is, &thermalManager.temp_bed.celsius, nullptr, ScreenHandler.DGUSLCD_SendFloatAsLongValueToDisplay<0>),
+    VPHELPER(VP_T_Bed_Set, &thermalManager.temp_bed.target, ScreenHandler.HandleTemperatureChanged, &ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_BED_CONTROL, &thermalManager.temp_bed.target, &ScreenHandler.HandleHeaterControl, nullptr),
+    VPHELPER(VP_BED_STATUS, &thermalManager.temp_bed.target, nullptr, &ScreenHandler.DGUSLCD_SendHeaterStatusToDisplay),
     #if ENABLED(PIDTEMP)
-      VPHELPER(VP_BED_PID_P, &thermalManager.temp_bed.pid.Kp, DGUSScreenVariableHandler::HandleTemperaturePIDChanged, DGUSScreenVariableHandler::DGUSLCD_SendTemperaturePID),
-      VPHELPER(VP_BED_PID_I, &thermalManager.temp_bed.pid.Ki, DGUSScreenVariableHandler::HandleTemperaturePIDChanged, DGUSScreenVariableHandler::DGUSLCD_SendTemperaturePID),
-      VPHELPER(VP_BED_PID_D, &thermalManager.temp_bed.pid.Kd, DGUSScreenVariableHandler::HandleTemperaturePIDChanged, DGUSScreenVariableHandler::DGUSLCD_SendTemperaturePID),
-      VPHELPER(VP_PID_AUTOTUNE_BED, nullptr, &DGUSScreenVariableHandler::HandlePIDAutotune, nullptr),
+      VPHELPER(VP_BED_PID_P, &thermalManager.temp_bed.pid.Kp, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_BED_PID_I, &thermalManager.temp_bed.pid.Ki, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_BED_PID_D, &thermalManager.temp_bed.pid.Kd, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_PID_AUTOTUNE_BED, nullptr, &ScreenHandler.HandlePIDAutotune, nullptr),
     #endif
   #endif
 
   // Fan Data
   #if HAS_FAN
     #define FAN_VPHELPER(N) \
-      VPHELPER(VP_Fan##N##_Percentage, &thermalManager.fan_speed[N], DGUSScreenVariableHandler::DGUSLCD_PercentageToUint8, &DGUSScreenVariableHandler::DGUSLCD_SendPercentageToDisplay), \
-      VPHELPER(VP_FAN##N##_CONTROL, &thermalManager.fan_speed[N], &DGUSScreenVariableHandler::HandleFanControl, nullptr), \
-      VPHELPER(VP_FAN##N##_STATUS, &thermalManager.fan_speed[N], nullptr, &DGUSScreenVariableHandler::DGUSLCD_SendFanStatusToDisplay),
+      VPHELPER(VP_Fan##N##_Percentage, &thermalManager.fan_speed[N], ScreenHandler.DGUSLCD_PercentageToUint8, &ScreenHandler.DGUSLCD_SendPercentageToDisplay), \
+      VPHELPER(VP_FAN##N##_CONTROL, &thermalManager.fan_speed[N], &ScreenHandler.HandleFanControl, nullptr), \
+      VPHELPER(VP_FAN##N##_STATUS, &thermalManager.fan_speed[N], nullptr, &ScreenHandler.DGUSLCD_SendFanStatusToDisplay),
     REPEAT(FAN_COUNT, FAN_VPHELPER)
   #endif
 
   // Feedrate
-  VPHELPER(VP_Feedrate_Percentage, &feedrate_percentage, DGUSScreenVariableHandler::DGUSLCD_SetValueDirectly<int16_t>, &DGUSScreenVariableHandler::DGUSLCD_SendWordValueToDisplay ),
+  VPHELPER(VP_Feedrate_Percentage, &feedrate_percentage, ScreenHandler.DGUSLCD_SetValueDirectly<int16_t>, &ScreenHandler.DGUSLCD_SendWordValueToDisplay ),
 
   // Position Data
-  VPHELPER(VP_XPos, &current_position.x, nullptr, DGUSScreenVariableHandler::DGUSLCD_SendFloatAsLongValueToDisplay<2>),
-  VPHELPER(VP_YPos, &current_position.y, nullptr, DGUSScreenVariableHandler::DGUSLCD_SendFloatAsLongValueToDisplay<2>),
-  VPHELPER(VP_ZPos, &current_position.z, nullptr, DGUSScreenVariableHandler::DGUSLCD_SendFloatAsLongValueToDisplay<2>),
+  VPHELPER(VP_XPos, &current_position.x, nullptr, ScreenHandler.DGUSLCD_SendFloatAsLongValueToDisplay<2>),
+  VPHELPER(VP_YPos, &current_position.y, nullptr, ScreenHandler.DGUSLCD_SendFloatAsLongValueToDisplay<2>),
+  VPHELPER(VP_ZPos, &current_position.z, nullptr, ScreenHandler.DGUSLCD_SendFloatAsLongValueToDisplay<2>),
 
   // Print Progress
-  VPHELPER(VP_PrintProgress_Percentage, nullptr, nullptr, DGUSScreenVariableHandler::DGUSLCD_SendPrintProgressToDisplay ),
+  VPHELPER(VP_PrintProgress_Percentage, nullptr, nullptr, ScreenHandler.DGUSLCD_SendPrintProgressToDisplay ),
 
   // Print Time
-  VPHELPER_STR(VP_PrintTime, nullptr, VP_PrintTime_LEN, nullptr, DGUSScreenVariableHandler::DGUSLCD_SendPrintTimeToDisplay ),
+  VPHELPER_STR(VP_PrintTime, nullptr, VP_PrintTime_LEN, nullptr, ScreenHandler.DGUSLCD_SendPrintTimeToDisplay ),
   #if ENABLED(PRINTCOUNTER)
-    VPHELPER_STR(VP_PrintAccTime, nullptr, VP_PrintAccTime_LEN, nullptr, DGUSScreenVariableHandler::DGUSLCD_SendPrintAccTimeToDisplay ),
-    VPHELPER_STR(VP_PrintsTotal, nullptr, VP_PrintsTotal_LEN, nullptr, DGUSScreenVariableHandler::DGUSLCD_SendPrintsTotalToDisplay ),
+    VPHELPER_STR(VP_PrintAccTime, nullptr, VP_PrintAccTime_LEN, nullptr, ScreenHandler.DGUSLCD_SendPrintAccTimeToDisplay ),
+    VPHELPER_STR(VP_PrintsTotal, nullptr, VP_PrintsTotal_LEN, nullptr, ScreenHandler.DGUSLCD_SendPrintsTotalToDisplay ),
   #endif
 
-  VPHELPER(VP_X_STEP_PER_MM, &planner.settings.axis_steps_per_mm[X_AXIS], DGUSScreenVariableHandler::HandleStepPerMMChanged, DGUSScreenVariableHandler::DGUSLCD_SendFloatAsIntValueToDisplay<1>),
-  VPHELPER(VP_Y_STEP_PER_MM, &planner.settings.axis_steps_per_mm[Y_AXIS], DGUSScreenVariableHandler::HandleStepPerMMChanged, DGUSScreenVariableHandler::DGUSLCD_SendFloatAsIntValueToDisplay<1>),
-  VPHELPER(VP_Z_STEP_PER_MM, &planner.settings.axis_steps_per_mm[Z_AXIS], DGUSScreenVariableHandler::HandleStepPerMMChanged, DGUSScreenVariableHandler::DGUSLCD_SendFloatAsIntValueToDisplay<1>),
+  VPHELPER(VP_X_STEP_PER_MM, &planner.settings.axis_steps_per_mm[X_AXIS], ScreenHandler.HandleStepPerMMChanged, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<1>),
+  VPHELPER(VP_Y_STEP_PER_MM, &planner.settings.axis_steps_per_mm[Y_AXIS], ScreenHandler.HandleStepPerMMChanged, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<1>),
+  VPHELPER(VP_Z_STEP_PER_MM, &planner.settings.axis_steps_per_mm[Z_AXIS], ScreenHandler.HandleStepPerMMChanged, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<1>),
   #if HOTENDS >= 1
-    VPHELPER(VP_E0_STEP_PER_MM, &planner.settings.axis_steps_per_mm[E_AXIS_N(0)], DGUSScreenVariableHandler::HandleStepPerMMExtruderChanged, DGUSScreenVariableHandler::DGUSLCD_SendFloatAsIntValueToDisplay<1>),
+    VPHELPER(VP_E0_STEP_PER_MM, &planner.settings.axis_steps_per_mm[E_AXIS_N(0)], ScreenHandler.HandleStepPerMMExtruderChanged, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<1>),
   #endif
   #if HOTENDS >= 2
-    VPHELPER(VP_E1_STEP_PER_MM, &planner.settings.axis_steps_per_mm[E_AXIS_N(1)], DGUSScreenVariableHandler::HandleStepPerMMExtruderChanged, DGUSScreenVariableHandler::DGUSLCD_SendFloatAsIntValueToDisplay<1>),
+    VPHELPER(VP_E1_STEP_PER_MM, &planner.settings.axis_steps_per_mm[E_AXIS_N(1)], ScreenHandler.HandleStepPerMMExtruderChanged, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<1>),
   #endif
 
   // SDCard File listing.
   #if ENABLED(SDSUPPORT)
-    VPHELPER(VP_SD_ScrollEvent, nullptr, DGUSScreenVariableHandler::DGUSLCD_SD_ScrollFilelist, nullptr),
-    VPHELPER(VP_SD_FileSelected, nullptr, DGUSScreenVariableHandler::DGUSLCD_SD_FileSelected, nullptr),
-    VPHELPER(VP_SD_FileSelectConfirm, nullptr, DGUSScreenVariableHandler::DGUSLCD_SD_StartPrint, nullptr),
-    VPHELPER_STR(VP_SD_FileName0,  nullptr, VP_SD_FileName_LEN, nullptr, DGUSScreenVariableHandler::DGUSLCD_SD_SendFilename ),
-    VPHELPER_STR(VP_SD_FileName1,  nullptr, VP_SD_FileName_LEN, nullptr, DGUSScreenVariableHandler::DGUSLCD_SD_SendFilename ),
-    VPHELPER_STR(VP_SD_FileName2,  nullptr, VP_SD_FileName_LEN, nullptr, DGUSScreenVariableHandler::DGUSLCD_SD_SendFilename ),
-    VPHELPER_STR(VP_SD_FileName3,  nullptr, VP_SD_FileName_LEN, nullptr, DGUSScreenVariableHandler::DGUSLCD_SD_SendFilename ),
-    VPHELPER_STR(VP_SD_FileName4,  nullptr, VP_SD_FileName_LEN, nullptr, DGUSScreenVariableHandler::DGUSLCD_SD_SendFilename ),
-    VPHELPER(VP_SD_ResumePauseAbort, nullptr, DGUSScreenVariableHandler::DGUSLCD_SD_ResumePauseAbort, nullptr),
-    VPHELPER(VP_SD_AbortPrintConfirmed, nullptr, DGUSScreenVariableHandler::DGUSLCD_SD_ReallyAbort, nullptr),
-    VPHELPER(VP_SD_Print_Setting, nullptr, DGUSScreenVariableHandler::DGUSLCD_SD_PrintTune, nullptr),
+    VPHELPER(VP_SD_ScrollEvent, nullptr, ScreenHandler.DGUSLCD_SD_ScrollFilelist, nullptr),
+    VPHELPER(VP_SD_FileSelected, nullptr, ScreenHandler.DGUSLCD_SD_FileSelected, nullptr),
+    VPHELPER(VP_SD_FileSelectConfirm, nullptr, ScreenHandler.DGUSLCD_SD_StartPrint, nullptr),
+    VPHELPER_STR(VP_SD_FileName0,  nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename ),
+    VPHELPER_STR(VP_SD_FileName1,  nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename ),
+    VPHELPER_STR(VP_SD_FileName2,  nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename ),
+    VPHELPER_STR(VP_SD_FileName3,  nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename ),
+    VPHELPER_STR(VP_SD_FileName4,  nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename ),
+    VPHELPER(VP_SD_ResumePauseAbort, nullptr, ScreenHandler.DGUSLCD_SD_ResumePauseAbort, nullptr),
+    VPHELPER(VP_SD_AbortPrintConfirmed, nullptr, ScreenHandler.DGUSLCD_SD_ReallyAbort, nullptr),
+    VPHELPER(VP_SD_Print_Setting, nullptr, ScreenHandler.DGUSLCD_SD_PrintTune, nullptr),
     #if HAS_BED_PROBE
-      VPHELPER(VP_SD_Print_ProbeOffsetZ, &probe.offset.z, DGUSScreenVariableHandler::HandleProbeOffsetZChanged, &DGUSScreenVariableHandler::DGUSLCD_SendFloatAsIntValueToDisplay<2>),
+      VPHELPER(VP_SD_Print_ProbeOffsetZ, &probe.offset.z, ScreenHandler.HandleProbeOffsetZChanged, &ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<2>),
       #if ENABLED(BABYSTEPPING)
-        VPHELPER(VP_SD_Print_LiveAdjustZ, nullptr, DGUSScreenVariableHandler::HandleLiveAdjustZ, nullptr),
+        VPHELPER(VP_SD_Print_LiveAdjustZ, nullptr, ScreenHandler.HandleLiveAdjustZ, nullptr),
       #endif
     #endif
   #endif
 
   #if ENABLED(DGUS_UI_WAITING)
-    VPHELPER(VP_WAITING_STATUS, nullptr, nullptr, DGUSScreenVariableHandler::DGUSLCD_SendWaitingStatusToDisplay),
+    VPHELPER(VP_WAITING_STATUS, nullptr, nullptr, ScreenHandler.DGUSLCD_SendWaitingStatusToDisplay),
   #endif
 
   // Messages for the User, shared by the popup and the kill screen. They cant be autouploaded as we do not buffer content.
-  { .VP = VP_MSGSTR1, .memadr = nullptr, .size = VP_MSGSTR1_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &DGUSScreenVariableHandler::DGUSLCD_SendStringToDisplayPGM },
-  { .VP = VP_MSGSTR2, .memadr = nullptr, .size = VP_MSGSTR2_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &DGUSScreenVariableHandler::DGUSLCD_SendStringToDisplayPGM },
-  { .VP = VP_MSGSTR3, .memadr = nullptr, .size = VP_MSGSTR3_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &DGUSScreenVariableHandler::DGUSLCD_SendStringToDisplayPGM },
-  { .VP = VP_MSGSTR4, .memadr = nullptr, .size = VP_MSGSTR4_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &DGUSScreenVariableHandler::DGUSLCD_SendStringToDisplayPGM },
+  { .VP = VP_MSGSTR1, .memadr = nullptr, .size = VP_MSGSTR1_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &ScreenHandler.DGUSLCD_SendStringToDisplayPGM },
+  { .VP = VP_MSGSTR2, .memadr = nullptr, .size = VP_MSGSTR2_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &ScreenHandler.DGUSLCD_SendStringToDisplayPGM },
+  { .VP = VP_MSGSTR3, .memadr = nullptr, .size = VP_MSGSTR3_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &ScreenHandler.DGUSLCD_SendStringToDisplayPGM },
+  { .VP = VP_MSGSTR4, .memadr = nullptr, .size = VP_MSGSTR4_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &ScreenHandler.DGUSLCD_SendStringToDisplayPGM },
 
   VPHELPER(0, 0, 0, 0)  // must be last entry.
 };
diff --git a/Marlin/src/lcd/extui/lib/dgus/origin/DGUSDisplayDef.cpp b/Marlin/src/lcd/extui/lib/dgus/origin/DGUSDisplayDef.cpp
index b6a7fca903..73ee1a62d3 100644
--- a/Marlin/src/lcd/extui/lib/dgus/origin/DGUSDisplayDef.cpp
+++ b/Marlin/src/lcd/extui/lib/dgus/origin/DGUSDisplayDef.cpp
@@ -28,6 +28,7 @@
 
 #include "../DGUSDisplayDef.h"
 #include "../DGUSDisplay.h"
+#include "../DGUSScreenHandler.h"
 
 #include "../../../../../module/temperature.h"
 #include "../../../../../module/motion.h"
@@ -153,152 +154,152 @@ const char MarlinVersion[] PROGMEM = SHORT_BUILD_VERSION;
 
 const struct DGUS_VP_Variable ListOfVP[] PROGMEM = {
   // Helper to detect touch events
-  VPHELPER(VP_SCREENCHANGE, nullptr, DGUSScreenVariableHandler::ScreenChangeHook, nullptr),
-  VPHELPER(VP_SCREENCHANGE_ASK, nullptr, DGUSScreenVariableHandler::ScreenChangeHookIfIdle, nullptr),
+  VPHELPER(VP_SCREENCHANGE, nullptr, ScreenHandler.ScreenChangeHook, nullptr),
+  VPHELPER(VP_SCREENCHANGE_ASK, nullptr, ScreenHandler.ScreenChangeHookIfIdle, nullptr),
   #if ENABLED(SDSUPPORT)
-    VPHELPER(VP_SCREENCHANGE_WHENSD, nullptr, DGUSScreenVariableHandler::ScreenChangeHookIfSD, nullptr),
+    VPHELPER(VP_SCREENCHANGE_WHENSD, nullptr, ScreenHandler.ScreenChangeHookIfSD, nullptr),
   #endif
-  VPHELPER(VP_CONFIRMED, nullptr, DGUSScreenVariableHandler::ScreenConfirmedOK, nullptr),
+  VPHELPER(VP_CONFIRMED, nullptr, ScreenHandler.ScreenConfirmedOK, nullptr),
 
-  VPHELPER(VP_TEMP_ALL_OFF, nullptr, &DGUSScreenVariableHandler::HandleAllHeatersOff, nullptr),
+  VPHELPER(VP_TEMP_ALL_OFF, nullptr, &ScreenHandler.HandleAllHeatersOff, nullptr),
 
   #if ENABLED(DGUS_UI_MOVE_DIS_OPTION)
-    VPHELPER(VP_MOVE_OPTION, &distanceToMove, &DGUSScreenVariableHandler::HandleManualMoveOption, nullptr),
+    VPHELPER(VP_MOVE_OPTION, &distanceToMove, &ScreenHandler.HandleManualMoveOption, nullptr),
   #endif
   #if ENABLED(DGUS_UI_MOVE_DIS_OPTION)
-    VPHELPER(VP_MOVE_X, &distanceToMove, &DGUSScreenVariableHandler::HandleManualMove, nullptr),
-    VPHELPER(VP_MOVE_Y, &distanceToMove, &DGUSScreenVariableHandler::HandleManualMove, nullptr),
-    VPHELPER(VP_MOVE_Z, &distanceToMove, &DGUSScreenVariableHandler::HandleManualMove, nullptr),
-    VPHELPER(VP_HOME_ALL, &distanceToMove, &DGUSScreenVariableHandler::HandleManualMove, nullptr),
+    VPHELPER(VP_MOVE_X, &distanceToMove, &ScreenHandler.HandleManualMove, nullptr),
+    VPHELPER(VP_MOVE_Y, &distanceToMove, &ScreenHandler.HandleManualMove, nullptr),
+    VPHELPER(VP_MOVE_Z, &distanceToMove, &ScreenHandler.HandleManualMove, nullptr),
+    VPHELPER(VP_HOME_ALL, &distanceToMove, &ScreenHandler.HandleManualMove, nullptr),
   #else
-    VPHELPER(VP_MOVE_X, nullptr, &DGUSScreenVariableHandler::HandleManualMove, nullptr),
-    VPHELPER(VP_MOVE_Y, nullptr, &DGUSScreenVariableHandler::HandleManualMove, nullptr),
-    VPHELPER(VP_MOVE_Z, nullptr, &DGUSScreenVariableHandler::HandleManualMove, nullptr),
-    VPHELPER(VP_HOME_ALL, nullptr, &DGUSScreenVariableHandler::HandleManualMove, nullptr),
+    VPHELPER(VP_MOVE_X, nullptr, &ScreenHandler.HandleManualMove, nullptr),
+    VPHELPER(VP_MOVE_Y, nullptr, &ScreenHandler.HandleManualMove, nullptr),
+    VPHELPER(VP_MOVE_Z, nullptr, &ScreenHandler.HandleManualMove, nullptr),
+    VPHELPER(VP_HOME_ALL, nullptr, &ScreenHandler.HandleManualMove, nullptr),
   #endif
 
-  VPHELPER(VP_MOTOR_LOCK_UNLOK, nullptr, &DGUSScreenVariableHandler::HandleMotorLockUnlock, nullptr),
+  VPHELPER(VP_MOTOR_LOCK_UNLOK, nullptr, &ScreenHandler.HandleMotorLockUnlock, nullptr),
   #if ENABLED(POWER_LOSS_RECOVERY)
-    VPHELPER(VP_POWER_LOSS_RECOVERY, nullptr, &DGUSScreenVariableHandler::HandlePowerLossRecovery, nullptr),
+    VPHELPER(VP_POWER_LOSS_RECOVERY, nullptr, &ScreenHandler.HandlePowerLossRecovery, nullptr),
   #endif
-  VPHELPER(VP_SETTINGS, nullptr, &DGUSScreenVariableHandler::HandleSettings, nullptr),
+  VPHELPER(VP_SETTINGS, nullptr, &ScreenHandler.HandleSettings, nullptr),
 
-  { .VP = VP_MARLIN_VERSION, .memadr = (void*)MarlinVersion, .size = VP_MARLIN_VERSION_LEN, .set_by_display_handler = nullptr, .send_to_display_handler =&DGUSScreenVariableHandler::DGUSLCD_SendStringToDisplayPGM },
+  { .VP = VP_MARLIN_VERSION, .memadr = (void*)MarlinVersion, .size = VP_MARLIN_VERSION_LEN, .set_by_display_handler = nullptr, .send_to_display_handler =&ScreenHandler.DGUSLCD_SendStringToDisplayPGM },
   // M117 LCD String (We don't need the string in memory but "just" push it to the display on demand, hence the nullptr
-  { .VP = VP_M117, .memadr = nullptr, .size = VP_M117_LEN, .set_by_display_handler = nullptr, .send_to_display_handler =&DGUSScreenVariableHandler::DGUSLCD_SendStringToDisplay },
+  { .VP = VP_M117, .memadr = nullptr, .size = VP_M117_LEN, .set_by_display_handler = nullptr, .send_to_display_handler =&ScreenHandler.DGUSLCD_SendStringToDisplay },
 
   // Temperature Data
   #if HOTENDS >= 1
-    VPHELPER(VP_T_E0_Is, &thermalManager.temp_hotend[0].celsius, nullptr, DGUSScreenVariableHandler::DGUSLCD_SendFloatAsLongValueToDisplay<0>),
-    VPHELPER(VP_T_E0_Set, &thermalManager.temp_hotend[0].target, DGUSScreenVariableHandler::HandleTemperatureChanged, &DGUSScreenVariableHandler::DGUSLCD_SendWordValueToDisplay),
-    VPHELPER(VP_Flowrate_E0, nullptr, DGUSScreenVariableHandler::HandleFlowRateChanged, &DGUSScreenVariableHandler::DGUSLCD_SendWordValueToDisplay),
-    VPHELPER(VP_EPos, &destination.e, nullptr, DGUSScreenVariableHandler::DGUSLCD_SendFloatAsLongValueToDisplay<2>),
-    VPHELPER(VP_MOVE_E0, nullptr, &DGUSScreenVariableHandler::HandleManualExtrude, nullptr),
-    VPHELPER(VP_E0_CONTROL, &thermalManager.temp_hotend[0].target, &DGUSScreenVariableHandler::HandleHeaterControl, nullptr),
-    VPHELPER(VP_E0_STATUS, &thermalManager.temp_hotend[0].target, nullptr, &DGUSScreenVariableHandler::DGUSLCD_SendHeaterStatusToDisplay),
+    VPHELPER(VP_T_E0_Is, &thermalManager.temp_hotend[0].celsius, nullptr, ScreenHandler.DGUSLCD_SendFloatAsLongValueToDisplay<0>),
+    VPHELPER(VP_T_E0_Set, &thermalManager.temp_hotend[0].target, ScreenHandler.HandleTemperatureChanged, &ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_Flowrate_E0, nullptr, ScreenHandler.HandleFlowRateChanged, &ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_EPos, &destination.e, nullptr, ScreenHandler.DGUSLCD_SendFloatAsLongValueToDisplay<2>),
+    VPHELPER(VP_MOVE_E0, nullptr, &ScreenHandler.HandleManualExtrude, nullptr),
+    VPHELPER(VP_E0_CONTROL, &thermalManager.temp_hotend[0].target, &ScreenHandler.HandleHeaterControl, nullptr),
+    VPHELPER(VP_E0_STATUS, &thermalManager.temp_hotend[0].target, nullptr, &ScreenHandler.DGUSLCD_SendHeaterStatusToDisplay),
     #if ENABLED(DGUS_PREHEAT_UI)
-      VPHELPER(VP_E0_BED_PREHEAT, nullptr, &DGUSScreenVariableHandler::HandlePreheat, nullptr),
+      VPHELPER(VP_E0_BED_PREHEAT, nullptr, &ScreenHandler.HandlePreheat, nullptr),
     #endif
     #if ENABLED(PIDTEMP)
-      VPHELPER(VP_E0_PID_P, &thermalManager.temp_hotend[0].pid.Kp, DGUSScreenVariableHandler::HandleTemperaturePIDChanged, DGUSScreenVariableHandler::DGUSLCD_SendTemperaturePID),
-      VPHELPER(VP_E0_PID_I, &thermalManager.temp_hotend[0].pid.Ki, DGUSScreenVariableHandler::HandleTemperaturePIDChanged, DGUSScreenVariableHandler::DGUSLCD_SendTemperaturePID),
-      VPHELPER(VP_E0_PID_D, &thermalManager.temp_hotend[0].pid.Kd, DGUSScreenVariableHandler::HandleTemperaturePIDChanged, DGUSScreenVariableHandler::DGUSLCD_SendTemperaturePID),
-      VPHELPER(VP_PID_AUTOTUNE_E0, nullptr, &DGUSScreenVariableHandler::HandlePIDAutotune, nullptr),
+      VPHELPER(VP_E0_PID_P, &thermalManager.temp_hotend[0].pid.Kp, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_E0_PID_I, &thermalManager.temp_hotend[0].pid.Ki, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_E0_PID_D, &thermalManager.temp_hotend[0].pid.Kd, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_PID_AUTOTUNE_E0, nullptr, &ScreenHandler.HandlePIDAutotune, nullptr),
     #endif
     #if ENABLED(DGUS_FILAMENT_LOADUNLOAD)
-      VPHELPER(VP_E0_FILAMENT_LOAD_UNLOAD, nullptr, &DGUSScreenVariableHandler::HandleFilamentOption, &DGUSScreenVariableHandler::HandleFilamentLoadUnload),
+      VPHELPER(VP_E0_FILAMENT_LOAD_UNLOAD, nullptr, &ScreenHandler.HandleFilamentOption, &ScreenHandler.HandleFilamentLoadUnload),
     #endif
   #endif
   #if HOTENDS >= 2
     VPHELPER(VP_T_E1_Is, &thermalManager.temp_hotend[1].celsius, nullptr, DGUSLCD_SendFloatAsLongValueToDisplay<0>),
-    VPHELPER(VP_T_E1_Set, &thermalManager.temp_hotend[1].target, DGUSScreenVariableHandler::HandleTemperatureChanged, &DGUSScreenVariableHandler::DGUSLCD_SendWordValueToDisplay),
-    VPHELPER(VP_Flowrate_E1, nullptr, DGUSScreenVariableHandler::HandleFlowRateChanged, &DGUSScreenVariableHandler::DGUSLCD_SendWordValueToDisplay),
-    VPHELPER(VP_MOVE_E1, nullptr, &DGUSScreenVariableHandler::HandleManualExtrude, nullptr),
-    VPHELPER(VP_E1_CONTROL, &thermalManager.temp_hotend[1].target, &DGUSScreenVariableHandler::HandleHeaterControl, nullptr),
-    VPHELPER(VP_E1_STATUS, &thermalManager.temp_hotend[1].target, nullptr, &DGUSScreenVariableHandler::DGUSLCD_SendHeaterStatusToDisplay),
+    VPHELPER(VP_T_E1_Set, &thermalManager.temp_hotend[1].target, ScreenHandler.HandleTemperatureChanged, &ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_Flowrate_E1, nullptr, ScreenHandler.HandleFlowRateChanged, &ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_MOVE_E1, nullptr, &ScreenHandler.HandleManualExtrude, nullptr),
+    VPHELPER(VP_E1_CONTROL, &thermalManager.temp_hotend[1].target, &ScreenHandler.HandleHeaterControl, nullptr),
+    VPHELPER(VP_E1_STATUS, &thermalManager.temp_hotend[1].target, nullptr, &ScreenHandler.DGUSLCD_SendHeaterStatusToDisplay),
     #if ENABLED(PIDTEMP)
-      VPHELPER(VP_PID_AUTOTUNE_E1, nullptr, &DGUSScreenVariableHandler::HandlePIDAutotune, nullptr),
+      VPHELPER(VP_PID_AUTOTUNE_E1, nullptr, &ScreenHandler.HandlePIDAutotune, nullptr),
     #endif
   #endif
   #if HAS_HEATED_BED
-    VPHELPER(VP_T_Bed_Is, &thermalManager.temp_bed.celsius, nullptr, DGUSScreenVariableHandler::DGUSLCD_SendFloatAsLongValueToDisplay<0>),
-    VPHELPER(VP_T_Bed_Set, &thermalManager.temp_bed.target, DGUSScreenVariableHandler::HandleTemperatureChanged, &DGUSScreenVariableHandler::DGUSLCD_SendWordValueToDisplay),
-    VPHELPER(VP_BED_CONTROL, &thermalManager.temp_bed.target, &DGUSScreenVariableHandler::HandleHeaterControl, nullptr),
-    VPHELPER(VP_BED_STATUS, &thermalManager.temp_bed.target, nullptr, &DGUSScreenVariableHandler::DGUSLCD_SendHeaterStatusToDisplay),
+    VPHELPER(VP_T_Bed_Is, &thermalManager.temp_bed.celsius, nullptr, ScreenHandler.DGUSLCD_SendFloatAsLongValueToDisplay<0>),
+    VPHELPER(VP_T_Bed_Set, &thermalManager.temp_bed.target, ScreenHandler.HandleTemperatureChanged, &ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_BED_CONTROL, &thermalManager.temp_bed.target, &ScreenHandler.HandleHeaterControl, nullptr),
+    VPHELPER(VP_BED_STATUS, &thermalManager.temp_bed.target, nullptr, &ScreenHandler.DGUSLCD_SendHeaterStatusToDisplay),
     #if ENABLED(PIDTEMPBED)
-      VPHELPER(VP_BED_PID_P, &thermalManager.temp_bed.pid.Kp, DGUSScreenVariableHandler::HandleTemperaturePIDChanged, DGUSScreenVariableHandler::DGUSLCD_SendTemperaturePID),
-      VPHELPER(VP_BED_PID_I, &thermalManager.temp_bed.pid.Ki, DGUSScreenVariableHandler::HandleTemperaturePIDChanged, DGUSScreenVariableHandler::DGUSLCD_SendTemperaturePID),
-      VPHELPER(VP_BED_PID_D, &thermalManager.temp_bed.pid.Kd, DGUSScreenVariableHandler::HandleTemperaturePIDChanged, DGUSScreenVariableHandler::DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_BED_PID_P, &thermalManager.temp_bed.pid.Kp, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_BED_PID_I, &thermalManager.temp_bed.pid.Ki, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_BED_PID_D, &thermalManager.temp_bed.pid.Kd, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
     #endif
   #endif
 
   // Fan Data
   #if HAS_FAN
     #define FAN_VPHELPER(N) \
-      VPHELPER(VP_Fan##N##_Percentage, &thermalManager.fan_speed[N], DGUSScreenVariableHandler::DGUSLCD_PercentageToUint8, &DGUSScreenVariableHandler::DGUSLCD_SendPercentageToDisplay), \
-      VPHELPER(VP_FAN##N##_CONTROL, &thermalManager.fan_speed[N], &DGUSScreenVariableHandler::HandleFanControl, nullptr), \
-      VPHELPER(VP_FAN##N##_STATUS, &thermalManager.fan_speed[N], nullptr, &DGUSScreenVariableHandler::DGUSLCD_SendFanStatusToDisplay),
+      VPHELPER(VP_Fan##N##_Percentage, &thermalManager.fan_speed[N], ScreenHandler.DGUSLCD_PercentageToUint8, &ScreenHandler.DGUSLCD_SendPercentageToDisplay), \
+      VPHELPER(VP_FAN##N##_CONTROL, &thermalManager.fan_speed[N], &ScreenHandler.HandleFanControl, nullptr), \
+      VPHELPER(VP_FAN##N##_STATUS, &thermalManager.fan_speed[N], nullptr, &ScreenHandler.DGUSLCD_SendFanStatusToDisplay),
     REPEAT(FAN_COUNT, FAN_VPHELPER)
   #endif
 
   // Feedrate
-  VPHELPER(VP_Feedrate_Percentage, &feedrate_percentage, DGUSScreenVariableHandler::DGUSLCD_SetValueDirectly<int16_t>, &DGUSScreenVariableHandler::DGUSLCD_SendWordValueToDisplay ),
+  VPHELPER(VP_Feedrate_Percentage, &feedrate_percentage, ScreenHandler.DGUSLCD_SetValueDirectly<int16_t>, &ScreenHandler.DGUSLCD_SendWordValueToDisplay ),
 
   // Position Data
-  VPHELPER(VP_XPos, &current_position.x, nullptr, DGUSScreenVariableHandler::DGUSLCD_SendFloatAsLongValueToDisplay<2>),
-  VPHELPER(VP_YPos, &current_position.y, nullptr, DGUSScreenVariableHandler::DGUSLCD_SendFloatAsLongValueToDisplay<2>),
-  VPHELPER(VP_ZPos, &current_position.z, nullptr, DGUSScreenVariableHandler::DGUSLCD_SendFloatAsLongValueToDisplay<2>),
+  VPHELPER(VP_XPos, &current_position.x, nullptr, ScreenHandler.DGUSLCD_SendFloatAsLongValueToDisplay<2>),
+  VPHELPER(VP_YPos, &current_position.y, nullptr, ScreenHandler.DGUSLCD_SendFloatAsLongValueToDisplay<2>),
+  VPHELPER(VP_ZPos, &current_position.z, nullptr, ScreenHandler.DGUSLCD_SendFloatAsLongValueToDisplay<2>),
 
   // Print Progress
-  VPHELPER(VP_PrintProgress_Percentage, nullptr, nullptr, DGUSScreenVariableHandler::DGUSLCD_SendPrintProgressToDisplay ),
+  VPHELPER(VP_PrintProgress_Percentage, nullptr, nullptr, ScreenHandler.DGUSLCD_SendPrintProgressToDisplay ),
 
   // Print Time
-  VPHELPER_STR(VP_PrintTime, nullptr, VP_PrintTime_LEN, nullptr, DGUSScreenVariableHandler::DGUSLCD_SendPrintTimeToDisplay ),
+  VPHELPER_STR(VP_PrintTime, nullptr, VP_PrintTime_LEN, nullptr, ScreenHandler.DGUSLCD_SendPrintTimeToDisplay ),
   #if ENABLED(PRINTCOUNTER)
-    VPHELPER_STR(VP_PrintAccTime, nullptr, VP_PrintAccTime_LEN, nullptr, DGUSScreenVariableHandler::DGUSLCD_SendPrintAccTimeToDisplay ),
-    VPHELPER_STR(VP_PrintsTotal, nullptr, VP_PrintsTotal_LEN, nullptr, DGUSScreenVariableHandler::DGUSLCD_SendPrintsTotalToDisplay ),
+    VPHELPER_STR(VP_PrintAccTime, nullptr, VP_PrintAccTime_LEN, nullptr, ScreenHandler.DGUSLCD_SendPrintAccTimeToDisplay ),
+    VPHELPER_STR(VP_PrintsTotal, nullptr, VP_PrintsTotal_LEN, nullptr, ScreenHandler.DGUSLCD_SendPrintsTotalToDisplay ),
   #endif
 
-  VPHELPER(VP_X_STEP_PER_MM, &planner.settings.axis_steps_per_mm[X_AXIS], DGUSScreenVariableHandler::HandleStepPerMMChanged, DGUSScreenVariableHandler::DGUSLCD_SendFloatAsIntValueToDisplay<1>),
-  VPHELPER(VP_Y_STEP_PER_MM, &planner.settings.axis_steps_per_mm[Y_AXIS], DGUSScreenVariableHandler::HandleStepPerMMChanged, DGUSScreenVariableHandler::DGUSLCD_SendFloatAsIntValueToDisplay<1>),
-  VPHELPER(VP_Z_STEP_PER_MM, &planner.settings.axis_steps_per_mm[Z_AXIS], DGUSScreenVariableHandler::HandleStepPerMMChanged, DGUSScreenVariableHandler::DGUSLCD_SendFloatAsIntValueToDisplay<1>),
+  VPHELPER(VP_X_STEP_PER_MM, &planner.settings.axis_steps_per_mm[X_AXIS], ScreenHandler.HandleStepPerMMChanged, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<1>),
+  VPHELPER(VP_Y_STEP_PER_MM, &planner.settings.axis_steps_per_mm[Y_AXIS], ScreenHandler.HandleStepPerMMChanged, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<1>),
+  VPHELPER(VP_Z_STEP_PER_MM, &planner.settings.axis_steps_per_mm[Z_AXIS], ScreenHandler.HandleStepPerMMChanged, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<1>),
   #if HOTENDS >= 1
-    VPHELPER(VP_E0_STEP_PER_MM, &planner.settings.axis_steps_per_mm[E_AXIS_N(0)], DGUSScreenVariableHandler::HandleStepPerMMExtruderChanged, DGUSScreenVariableHandler::DGUSLCD_SendFloatAsIntValueToDisplay<1>),
+    VPHELPER(VP_E0_STEP_PER_MM, &planner.settings.axis_steps_per_mm[E_AXIS_N(0)], ScreenHandler.HandleStepPerMMExtruderChanged, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<1>),
   #endif
   #if HOTENDS >= 2
-    VPHELPER(VP_E1_STEP_PER_MM, &planner.settings.axis_steps_per_mm[E_AXIS_N(1)], DGUSScreenVariableHandler::HandleStepPerMMExtruderChanged, DGUSScreenVariableHandler::DGUSLCD_SendFloatAsIntValueToDisplay<1>),
+    VPHELPER(VP_E1_STEP_PER_MM, &planner.settings.axis_steps_per_mm[E_AXIS_N(1)], ScreenHandler.HandleStepPerMMExtruderChanged, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<1>),
   #endif
 
   // SDCard File listing.
   #if ENABLED(SDSUPPORT)
-    VPHELPER(VP_SD_ScrollEvent, nullptr, DGUSScreenVariableHandler::DGUSLCD_SD_ScrollFilelist, nullptr),
-    VPHELPER(VP_SD_FileSelected, nullptr, DGUSScreenVariableHandler::DGUSLCD_SD_FileSelected, nullptr),
-    VPHELPER(VP_SD_FileSelectConfirm, nullptr, DGUSScreenVariableHandler::DGUSLCD_SD_StartPrint, nullptr),
-    VPHELPER_STR(VP_SD_FileName0,  nullptr, VP_SD_FileName_LEN, nullptr, DGUSScreenVariableHandler::DGUSLCD_SD_SendFilename ),
-    VPHELPER_STR(VP_SD_FileName1,  nullptr, VP_SD_FileName_LEN, nullptr, DGUSScreenVariableHandler::DGUSLCD_SD_SendFilename ),
-    VPHELPER_STR(VP_SD_FileName2,  nullptr, VP_SD_FileName_LEN, nullptr, DGUSScreenVariableHandler::DGUSLCD_SD_SendFilename ),
-    VPHELPER_STR(VP_SD_FileName3,  nullptr, VP_SD_FileName_LEN, nullptr, DGUSScreenVariableHandler::DGUSLCD_SD_SendFilename ),
-    VPHELPER_STR(VP_SD_FileName4,  nullptr, VP_SD_FileName_LEN, nullptr, DGUSScreenVariableHandler::DGUSLCD_SD_SendFilename ),
-    VPHELPER(VP_SD_ResumePauseAbort, nullptr, DGUSScreenVariableHandler::DGUSLCD_SD_ResumePauseAbort, nullptr),
-    VPHELPER(VP_SD_AbortPrintConfirmed, nullptr, DGUSScreenVariableHandler::DGUSLCD_SD_ReallyAbort, nullptr),
-    VPHELPER(VP_SD_Print_Setting, nullptr, DGUSScreenVariableHandler::DGUSLCD_SD_PrintTune, nullptr),
+    VPHELPER(VP_SD_ScrollEvent, nullptr, ScreenHandler.DGUSLCD_SD_ScrollFilelist, nullptr),
+    VPHELPER(VP_SD_FileSelected, nullptr, ScreenHandler.DGUSLCD_SD_FileSelected, nullptr),
+    VPHELPER(VP_SD_FileSelectConfirm, nullptr, ScreenHandler.DGUSLCD_SD_StartPrint, nullptr),
+    VPHELPER_STR(VP_SD_FileName0,  nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename ),
+    VPHELPER_STR(VP_SD_FileName1,  nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename ),
+    VPHELPER_STR(VP_SD_FileName2,  nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename ),
+    VPHELPER_STR(VP_SD_FileName3,  nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename ),
+    VPHELPER_STR(VP_SD_FileName4,  nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename ),
+    VPHELPER(VP_SD_ResumePauseAbort, nullptr, ScreenHandler.DGUSLCD_SD_ResumePauseAbort, nullptr),
+    VPHELPER(VP_SD_AbortPrintConfirmed, nullptr, ScreenHandler.DGUSLCD_SD_ReallyAbort, nullptr),
+    VPHELPER(VP_SD_Print_Setting, nullptr, ScreenHandler.DGUSLCD_SD_PrintTune, nullptr),
     #if HAS_BED_PROBE
-      VPHELPER(VP_SD_Print_ProbeOffsetZ, &probe.offset.z, DGUSScreenVariableHandler::HandleProbeOffsetZChanged, &DGUSScreenVariableHandler::DGUSLCD_SendFloatAsIntValueToDisplay<2>),
+      VPHELPER(VP_SD_Print_ProbeOffsetZ, &probe.offset.z, ScreenHandler.HandleProbeOffsetZChanged, &ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<2>),
       #if ENABLED(BABYSTEPPING)
-        VPHELPER(VP_SD_Print_LiveAdjustZ, nullptr, DGUSScreenVariableHandler::HandleLiveAdjustZ, nullptr),
+        VPHELPER(VP_SD_Print_LiveAdjustZ, nullptr, ScreenHandler.HandleLiveAdjustZ, nullptr),
       #endif
     #endif
   #endif
 
   #if ENABLED(DGUS_UI_WAITING)
-    VPHELPER(VP_WAITING_STATUS, nullptr, nullptr, DGUSScreenVariableHandler::DGUSLCD_SendWaitingStatusToDisplay),
+    VPHELPER(VP_WAITING_STATUS, nullptr, nullptr, ScreenHandler.DGUSLCD_SendWaitingStatusToDisplay),
   #endif
 
   // Messages for the User, shared by the popup and the kill screen. They cant be autouploaded as we do not buffer content.
-  { .VP = VP_MSGSTR1, .memadr = nullptr, .size = VP_MSGSTR1_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &DGUSScreenVariableHandler::DGUSLCD_SendStringToDisplayPGM },
-  { .VP = VP_MSGSTR2, .memadr = nullptr, .size = VP_MSGSTR2_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &DGUSScreenVariableHandler::DGUSLCD_SendStringToDisplayPGM },
-  { .VP = VP_MSGSTR3, .memadr = nullptr, .size = VP_MSGSTR3_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &DGUSScreenVariableHandler::DGUSLCD_SendStringToDisplayPGM },
-  { .VP = VP_MSGSTR4, .memadr = nullptr, .size = VP_MSGSTR4_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &DGUSScreenVariableHandler::DGUSLCD_SendStringToDisplayPGM },
+  { .VP = VP_MSGSTR1, .memadr = nullptr, .size = VP_MSGSTR1_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &ScreenHandler.DGUSLCD_SendStringToDisplayPGM },
+  { .VP = VP_MSGSTR2, .memadr = nullptr, .size = VP_MSGSTR2_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &ScreenHandler.DGUSLCD_SendStringToDisplayPGM },
+  { .VP = VP_MSGSTR3, .memadr = nullptr, .size = VP_MSGSTR3_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &ScreenHandler.DGUSLCD_SendStringToDisplayPGM },
+  { .VP = VP_MSGSTR4, .memadr = nullptr, .size = VP_MSGSTR4_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &ScreenHandler.DGUSLCD_SendStringToDisplayPGM },
 
   VPHELPER(0, 0, 0, 0)  // must be last entry.
 };
diff --git a/Marlin/src/lcd/extui_dgus_lcd.cpp b/Marlin/src/lcd/extui_dgus_lcd.cpp
index 56308f08d6..e2d307d535 100644
--- a/Marlin/src/lcd/extui_dgus_lcd.cpp
+++ b/Marlin/src/lcd/extui_dgus_lcd.cpp
@@ -33,6 +33,7 @@
 #include "extui/ui_api.h"
 #include "extui/lib/dgus/DGUSDisplay.h"
 #include "extui/lib/dgus/DGUSDisplayDef.h"
+#include "extui/lib/dgus/DGUSScreenHandler.h"
 
 extern const char NUL_STR[];
 
diff --git a/buildroot/tests/FYSETC_F6_13-tests b/buildroot/tests/FYSETC_F6_13-tests
index 5ddbac554e..631a117785 100644
--- a/buildroot/tests/FYSETC_F6_13-tests
+++ b/buildroot/tests/FYSETC_F6_13-tests
@@ -11,7 +11,8 @@ set -e
 #
 restore_configs
 opt_set MOTHERBOARD BOARD_FYSETC_F6_13
-exec_test $1 $2 "Default Configuration"
+opt_enable DGUS_LCD_UI_FYSETC
+exec_test $1 $2 "FYSETC F6 1.3 with DGUS"
 
 # clean up
 restore_configs
-- 
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