Cancel Objects - As seen at ERRF2019 (#15590)

Marlin/src/lcd/language/language_en.h

@@ -427,6 +427,7 @@ namespace Language_en {
   PROGMEM Language_Str MSG_PAUSE_PRINT                     = _UxGT("Pause Print");
   PROGMEM Language_Str MSG_RESUME_PRINT                    = _UxGT("Resume Print");
   PROGMEM Language_Str MSG_STOP_PRINT                      = _UxGT("Stop Print");
+  PROGMEM Language_Str MSG_OBJECT_CANCEL                   = _UxGT("Cancel Object");
   PROGMEM Language_Str MSG_OUTAGE_RECOVERY                 = _UxGT("Outage Recovery");
   PROGMEM Language_Str MSG_MEDIA_MENU                      = _UxGT("Print from Media");
   PROGMEM Language_Str MSG_NO_MEDIA                        = _UxGT("No Media");

Marlin/src/lcd/menu/menu_advanced.cpp

@@ -50,6 +50,7 @@
 
 void menu_tmc();
 void menu_backlash();
+void menu_cancelobject();
 
 #if ENABLED(DAC_STEPPER_CURRENT)
 
@@ -652,6 +653,10 @@ void menu_advanced_settings() {
     SUBMENU(MSG_BACKLASH, menu_backlash);
   #endif
 
+  #if ENABLED(CANCEL_OBJECTS)
+    SUBMENU(MSG_CANCELOBJECTS, [](){ editable.int8 = -1; goto_screen(menu_cancelobject); });
+  #endif
+
   #if ENABLED(DAC_STEPPER_CURRENT)
     SUBMENU(MSG_DRIVE_STRENGTH, menu_dac);
   #endif

Marlin/src/lcd/menu/menu_cancelobject.cpp

@@ -0,0 +1,73 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2019 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/>.
+ *
+ */
+
+//
+// Cancel Object Menu
+//
+
+#include "../../inc/MarlinConfigPre.h"
+
+#if HAS_LCD_MENU && ENABLED(CANCEL_OBJECTS)
+
+#include "menu.h"
+
+#include "../../feature/cancel_object.h"
+
+//
+// TODO: Select the active object
+// upon entry to the menu and present
+// a confirmation screen.
+//
+void menu_cancelobject() {
+  START_MENU();
+  MENU_BACK(MSG_MAIN);
+
+  GCODES_ITEM(MSG_OBJECT_CANCEL, PSTR("M486 C"));
+
+  // Draw cancelable items in a loop
+  for (int8_t i = 0; i < cancelable.object_count; i++) {
+    if (!TEST(cancelable.canceled, i)) {
+      editable.int8 = i;
+      ACTION_ITEM(MSG_OBJECT_CANCEL, [](){
+        cancelable.cancel_object(editable.int8);
+        ui.quick_feedback();
+      });
+      MENU_ITEM_ADDON_START(LCD_WIDTH - 2 - (i >= 10));
+        lcd_put_int(i);
+      MENU_ITEM_ADDON_END();
+    }
+  }
+
+  /*
+  MENU_MULTIPLIER_ITEM_EDIT_CALLBACK(int3, MSG_OBJECT_CANCEL, &editable.int8, -1, 32, [](){
+    if (editable.int8 > -1) {
+      cancelable.cancel_object(editable.int8);
+      ui.quick_feedback();
+      editable.int8 = -1;
+    }
+  });
+  */
+
+  END_MENU();
+}
+
+#endif // HAS_LCD_MENU && CANCEL_OBJECTS