MarlinUI multi-language support (#20725)

Marlin/src/lcd/dogm/marlinui_DOGM.cpp

@@ -54,6 +54,7 @@
 #include "../../sd/cardreader.h"
 #include "../../module/temperature.h"
 #include "../../module/printcounter.h"
+#include "../../MarlinCore.h"
 
 #if ENABLED(SDSUPPORT)
   #include "../../libs/duration_t.h"
@@ -455,20 +456,22 @@ void MarlinUI::clear_lcd() { } // Automatically cleared by Picture Loop
   inline void draw_boxed_string(const u8g_uint_t x, const u8g_uint_t y, PGM_P const pstr, const bool inv) {
     const u8g_uint_t len = utf8_strlen_P(pstr),
                       by = (y + 1) * (MENU_FONT_HEIGHT);
-    const pixel_len_t bw = len * (MENU_FONT_WIDTH), bx = x * (MENU_FONT_WIDTH);
+    const u8g_uint_t prop = USE_WIDE_GLYPH ? 2 : 1;
+    const pixel_len_t bw = len * prop * (MENU_FONT_WIDTH), bx = x * prop * (MENU_FONT_WIDTH);
     if (inv) {
       u8g.setColorIndex(1);
-      u8g.drawBox(bx - 1, by - (MENU_FONT_ASCENT) + 1, bw + 2, MENU_FONT_HEIGHT - 1);
+      u8g.drawBox(bx / prop - 1, by - (MENU_FONT_ASCENT) + 1, bw / prop + 2, MENU_FONT_HEIGHT - 1);
       u8g.setColorIndex(0);
     }
-    lcd_put_u8str_P(bx, by, pstr);
+    lcd_put_u8str_P(bx / prop, by, pstr);
     if (inv) u8g.setColorIndex(1);
   }
 
   void MenuItem_confirm::draw_select_screen(PGM_P const yes, PGM_P const no, const bool yesno, PGM_P const pref, const char * const string/*=nullptr*/, PGM_P const suff/*=nullptr*/) {
     ui.draw_select_screen_prompt(pref, string, suff);
     draw_boxed_string(1, LCD_HEIGHT - 1, no, !yesno);
-    draw_boxed_string(LCD_WIDTH - (utf8_strlen_P(yes) + 1), LCD_HEIGHT - 1, yes, yesno);
+    const u8g_uint_t xpos = (LCD_WIDTH) / (USE_WIDE_GLYPH ? 2 : 1);
+    draw_boxed_string(xpos - (utf8_strlen_P(yes) + 1), LCD_HEIGHT - 1, yes, yesno);
   }
 
   #if ENABLED(SDSUPPORT)

Marlin/src/lcd/extui/lib/mks_ui/pic_manager.cpp

@@ -64,7 +64,6 @@ static const char assets[][LONG_FILENAME_LENGTH] = {
   "bmp_speed255.bin",
   "bmp_speed127.bin",
   "bmp_speed0.bin",
-  "bmp_speed0.bin",
 
   "bmp_bed.bin",
   "bmp_step1_degree.bin",

Marlin/src/lcd/lcdprint.cpp

@@ -28,6 +28,7 @@
 
 #if HAS_WIRED_LCD && !HAS_GRAPHICAL_TFT
 
+#include "marlinui.h"
 #include "lcdprint.h"
 
 /**

Marlin/src/lcd/marlinui.cpp

@@ -78,6 +78,10 @@ constexpr uint8_t epps = ENCODER_PULSES_PER_STEP;
   #endif
 #endif
 
+#if HAS_MULTI_LANGUAGE
+  uint8_t MarlinUI::language; // Initialized by settings.load()
+#endif
+
 #if ENABLED(SOUND_MENU_ITEM)
   bool MarlinUI::buzzer_enabled = true;
 #endif

Marlin/src/lcd/marlinui.h

@@ -178,6 +178,17 @@ public:
     TERN_(HAS_LCD_MENU, currentScreen = status_screen);
   }
 
+  #if HAS_MULTI_LANGUAGE
+    static uint8_t language;
+    static inline void set_language(const uint8_t lang) {
+      if (lang < NUM_LANGUAGES) {
+        language = lang;
+        return_to_status();
+        refresh();
+      }
+    }
+  #endif
+
   #if ENABLED(SOUND_MENU_ITEM)
     static bool buzzer_enabled; // Initialized by settings.load()
   #else

Marlin/src/lcd/menu/menu_language.cpp

@@ -0,0 +1,59 @@
+/**
+ * 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 <https://www.gnu.org/licenses/>.
+ *
+ */
+
+//
+// Language Selection Menu
+//
+
+#include "../../inc/MarlinConfig.h"
+
+#if HAS_MULTI_LANGUAGE
+
+#include "menu_item.h"
+#include "../../MarlinCore.h"
+#include "../../module/settings.h"
+
+static void set_lcd_language(const uint8_t inlang) {
+  ui.set_language(inlang);
+  (void)settings.save();
+}
+
+void menu_language() {
+  START_MENU();
+  BACK_ITEM(MSG_MAIN);
+
+  MENU_ITEM_P(function, GET_LANG(LCD_LANGUAGE  )::LANGUAGE, []{ set_lcd_language(0); });
+  MENU_ITEM_P(function, GET_LANG(LCD_LANGUAGE_2)::LANGUAGE, []{ set_lcd_language(1); });
+  #if NUM_LANGUAGES > 2
+    MENU_ITEM_P(function, GET_LANG(LCD_LANGUAGE_3)::LANGUAGE, []{ set_lcd_language(2); });
+    #if NUM_LANGUAGES > 3
+      MENU_ITEM_P(function, GET_LANG(LCD_LANGUAGE_4)::LANGUAGE, []{ set_lcd_language(3); });
+      #if NUM_LANGUAGES > 4
+        MENU_ITEM_P(function, GET_LANG(LCD_LANGUAGE_5)::LANGUAGE, []{ set_lcd_language(4); });
+      #endif
+    #endif
+  #endif
+
+  END_MENU();
+}
+
+#endif // HAS_MULTI_LANGUAGE

Marlin/src/lcd/menu/menu_main.cpp

@@ -97,6 +97,10 @@ void menu_configuration();
   void menu_spindle_laser();
 #endif
 
+#if HAS_MULTI_LANGUAGE
+  void menu_language();
+#endif
+
 extern const char M21_STR[];
 
 void menu_main() {
@@ -325,6 +329,10 @@ void menu_main() {
     }
   #endif
 
+  #if HAS_MULTI_LANGUAGE
+    SUBMENU(LANGUAGE, menu_language);
+  #endif
+
   END_MENU();
 }