🧑‍💻 General 'MediaFile' type alias (MarlinFirmware#24424)

Author: rhapsodyv

Marlin/src/lcd/extui/mks_ui/wifi_module.cpp

@@ -980,8 +980,80 @@ static void wifi_gcode_exec(uint8_t * const cmd_line) {
               send_ok_to_wifi();
             }
           }
-        }
-        break;
+          break;
+
+        case 24:
+          if (strcmp_P(list_file.file_name[sel_id], PSTR("notValid")) != 0) {
+            if (uiCfg.print_state == IDLE) {
+              clear_cur_ui();
+              reset_print_time();
+              start_print_time();
+              preview_gcode_prehandle(list_file.file_name[sel_id]);
+              uiCfg.print_state = WORKING;
+              lv_draw_printing();
+
+              #if ENABLED(SDSUPPORT)
+                if (!gcode_preview_over) {
+                  char *cur_name = strrchr(list_file.file_name[sel_id], '/');
+
+                  MediaFile file;
+                  MediaFile *curDir;
+                  card.abortFilePrintNow();
+                  const char * const fname = card.diveToFile(false, curDir, cur_name);
+                  if (!fname) return;
+                  if (file.open(curDir, fname, O_READ)) {
+                    gCfgItems.curFilesize = file.fileSize();
+                    file.close();
+                    update_spi_flash();
+                  }
+                  card.openFileRead(cur_name);
+                  if (card.isFileOpen()) {
+                    //saved_feedrate_percentage = feedrate_percentage;
+                    feedrate_percentage = 100;
+                    #if HAS_EXTRUDERS
+                      planner.flow_percentage[0] = 100;
+                      planner.e_factor[0] = planner.flow_percentage[0] * 0.01f;
+                    #endif
+                    #if HAS_MULTI_EXTRUDER
+                      planner.flow_percentage[1] = 100;
+                      planner.e_factor[1] = planner.flow_percentage[1] * 0.01f;
+                    #endif
+                    card.startOrResumeFilePrinting();
+                    TERN_(POWER_LOSS_RECOVERY, recovery.prepare());
+                    once_flag = false;
+                  }
+                }
+              #endif
+            }
+            else if (uiCfg.print_state == PAUSED) {
+              uiCfg.print_state = RESUMING;
+              clear_cur_ui();
+              start_print_time();
+
+              if (gCfgItems.from_flash_pic)
+                flash_preview_begin = true;
+              else
+                default_preview_flg = true;
+              lv_draw_printing();
+            }
+            else if (uiCfg.print_state == REPRINTING) {
+              uiCfg.print_state = REPRINTED;
+              clear_cur_ui();
+              start_print_time();
+              if (gCfgItems.from_flash_pic)
+                flash_preview_begin = true;
+              else
+                default_preview_flg = true;
+              lv_draw_printing();
+            }
+          }
+          SEND_OK_TO_WIFI;
+          break;
+
+        case 25:
+          // Pause print file
+          if (uiCfg.print_state == WORKING) {
+            stop_print_time();
 
       case 24:
         if (strcmp_P(list_file.file_name[sel_id], PSTR("notValid")) != 0) {

Marlin/src/sd/cardreader.cpp

@@ -228,7 +228,7 @@ bool CardReader::is_visible_entity(const dir_t &p OPTARG(CUSTOM_FIRMWARE_UPLOAD,
 //
 // Get the number of (compliant) items in the folder
 //
-int16_t CardReader::countVisibleItems(MediaFile dir) {
+int CardReader::countItems(MediaFile dir) {
   dir_t p;
   int16_t c = 0;
   dir.rewind();
@@ -239,7 +239,7 @@ int16_t CardReader::countVisibleItems(MediaFile dir) {
 //
 // Get file/folder info for an item by index
 //
-void CardReader::selectByIndex(MediaFile dir, const int16_t index) {
+void CardReader::selectByIndex(MediaFile dir, const uint8_t index) {
   dir_t p;
   for (int16_t cnt = 0; dir.readDir(&p, longFilename) > 0;) {
     if (is_visible_entity(p)) {

Marlin/src/sd/cardreader.h

@@ -335,8 +335,8 @@ class CardReader {
   // Directory items
   //
   static bool is_visible_entity(const dir_t &p OPTARG(CUSTOM_FIRMWARE_UPLOAD, const bool onlyBin=false));
-  static int16_t countVisibleItems(MediaFile dir);
-  static void selectByIndex(MediaFile dir, const int16_t index);
+  static int countItems(MediaFile dir);
+  static void selectByIndex(MediaFile dir, const uint8_t index);
   static void selectByName(MediaFile dir, const char * const match);
   static void printListing(
     MediaFile parent, const char * const prepend, const uint8_t lsflags