🚸 MarlinUI:: clear_for_drawing

Marlin/src/inc/Conditionals_LCD.h

@@ -1099,6 +1099,9 @@
    *  - poweroff        (for PSU_CONTROL and HAS_MARLINUI_MENU)
    *
    *  ...and implements these MarlinUI methods:
+   *  - init_lcd
+   *  - clear_lcd
+   *  - clear_for_drawing
    *  - zoffset_overlay (if BABYSTEP_GFX_OVERLAY or MESH_EDIT_GFX_OVERLAY are supported)
    *  - draw_kill_screen
    *  - kill_screen

Marlin/src/inc/Conditionals_post.h

@@ -557,8 +557,8 @@
     #endif
   #endif
 
-  #if HAS_SD_DETECT && NONE(HAS_GRAPHICAL_TFT, LCD_USE_DMA_FSMC, HAS_FSMC_GRAPHICAL_TFT, HAS_SPI_GRAPHICAL_TFT, IS_DWIN_MARLINUI, EXTENSIBLE_UI, HAS_DWIN_E3V2, HAS_U8GLIB_I2C_OLED)
-    #define REINIT_NOISY_SPI_LCD 1  // Have LCDs with shared SPI re-init on SD insertion
+  #if HAS_SD_DETECT && NONE(HAS_GRAPHICAL_TFT, LCD_USE_DMA_FSMC, HAS_FSMC_GRAPHICAL_TFT, HAS_SPI_GRAPHICAL_TFT, IS_DWIN_MARLINUI, EXTENSIBLE_UI, HAS_DWIN_E3V2)
+    #define REINIT_NOISY_LCD 1  // Have the LCD re-init on SD insertion
   #endif
 
 #endif // HAS_MEDIA

Marlin/src/lcd/HD44780/marlinui_HD44780.cpp

@@ -467,6 +467,7 @@ bool MarlinUI::detected() {
 #endif
 
 void MarlinUI::clear_lcd() { lcd.clear(); }
+void MarlinUI::clear_for_drawing() { clear_lcd(); }
 
 #if ENABLED(SHOW_BOOTSCREEN)
 
@@ -1515,7 +1516,7 @@ void MarlinUI::draw_status_screen() {
         lower_right.column = 0;
         lower_right.row    = 0;
 
-        clear_lcd();
+        clear_for_drawing();
 
         x_map_pixels = (HD44780_CHAR_WIDTH) * (MESH_MAP_COLS) - 2;          // Minus 2 because we are drawing a box around the map
         y_map_pixels = (HD44780_CHAR_HEIGHT) * (MESH_MAP_ROWS) - 2;

Marlin/src/lcd/TFTGLCD/marlinui_TFTGLCD.cpp

@@ -376,6 +376,8 @@ void MarlinUI::clear_lcd() {
   lcd.clear_buffer();
 }
 
+void MarlinUI::clear_for_drawing() { clear_lcd(); }
+
 #if HAS_LCD_CONTRAST
   void MarlinUI::_set_contrast() { lcd.setContrast(contrast); }
 #endif

Marlin/src/lcd/dogm/marlinui_DOGM.cpp

@@ -374,7 +374,19 @@ void MarlinUI::draw_kill_screen() {
   } while (u8g.nextPage());
 }
 
-void MarlinUI::clear_lcd() { } // Automatically cleared by Picture Loop
+// Erase the LCD contents by drawing an empty box.
+void MarlinUI::clear_lcd() {
+  u8g.setColorIndex(0);
+  u8g.firstPage();
+  do {
+    u8g.drawBox(0, 0, u8g.getWidth(), u8g.getHeight());
+  } while (u8g.nextPage());
+}
+
+// U8G displays are drawn over multiple loops so must do their own clearing.
+void MarlinUI::clear_for_drawing() {
+  // Automatically cleared by Picture Loop
+}
 
 #if HAS_DISPLAY_SLEEP
   void MarlinUI::sleep_display(const bool sleep/*=true*/) {

Marlin/src/lcd/e3v2/creality/dwin.cpp

@@ -1816,6 +1816,8 @@ void hmiSDCardInit() { card.cdroot(); }
 // Initialize or re-initialize the LCD
 void MarlinUI::init_lcd() { dwinStartup(); }
 
+void MarlinUI::clear_lcd() {}
+
 void MarlinUI::update() {
   eachMomentUpdate(); // Status update
   hmiSDCardUpdate();  // SD card update

Marlin/src/lcd/e3v2/jyersui/dwin.cpp

@@ -5155,6 +5155,8 @@ void MarlinUI::init_lcd() {
   jyersDWIN.redrawScreen();
 }
 
+void MarlinUI::clear_lcd() {}
+
 #if ENABLED(ADVANCED_PAUSE_FEATURE)
   void MarlinUI::pause_show_message(const PauseMessage message, const PauseMode mode/*=PAUSE_MODE_SAME*/, const uint8_t extruder/*=active_extruder*/) {
     if (mode != PAUSE_MODE_SAME) pause_mode = mode;

Marlin/src/lcd/e3v2/marlinui/ui_common.cpp

@@ -90,6 +90,8 @@ void MarlinUI::clear_lcd() {
   did_first_redraw = false;
 }
 
+void MarlinUI::clear_for_drawing() { clear_lcd(); }
+
 #if ENABLED(SHOW_BOOTSCREEN)
 
   void MarlinUI::show_bootscreen() {
@@ -111,7 +113,7 @@ void MarlinUI::clear_lcd() {
 
     dwinDrawString(false, font10x20, COLOR_YELLOW, COLOR_BG_BLACK, INFO_CENTER - (dwin_string.length * 10) / 2, VERSION_Y, S(dwin_string.string()));
     TERN_(SHOW_CUSTOM_BOOTSCREEN, safe_delay(CUSTOM_BOOTSCREEN_TIMEOUT));
-    clear_lcd();
+    clear_for_drawing();
 
     dwinIconShow(BOOT_ICON, ICON_MarlinBoot, LOGO_CENTER - 266 / 2,  15);
     #if ENABLED(DWIN_MARLINUI_PORTRAIT)
@@ -132,7 +134,7 @@ void MarlinUI::clear_lcd() {
 
   void MarlinUI::bootscreen_completion(const millis_t sofar) {
     if ((BOOTSCREEN_TIMEOUT) > sofar) safe_delay((BOOTSCREEN_TIMEOUT) - sofar);
-    clear_lcd();
+    clear_for_drawing();
   }
 
 #endif

Marlin/src/lcd/e3v2/proui/dwin.cpp

@@ -1913,6 +1913,8 @@ void MarlinUI::init_lcd() {
   dwinJPGCacheTo1(Language_English);
 }
 
+void MarlinUI::clear_lcd() {}
+
 void dwinInitScreen() {
   dwinSetColorDefaults();
   hmiInit();   // Draws boot screen

Marlin/src/lcd/e3v2/proui/proui_extui.cpp

@@ -195,6 +195,7 @@ namespace ExtUI {
     void onPIDTuning(const pidresult_t rst) {
       // Called for temperature PID tuning result
       switch (rst) {
+        default: break;
         #if ENABLED(PIDTEMP)
           case PID_STARTED:       dwinPIDTuning(PIDTEMP_START);                     break;
         #endif

Marlin/src/lcd/extui/ui_api.cpp

@@ -1279,6 +1279,9 @@ namespace ExtUI {
 #if DISABLED(HAS_DWIN_E3V2)
   void MarlinUI::init_lcd() { ExtUI::onStartup(); }
 
+  void MarlinUI::clear_lcd() {}
+  void MarlinUI::clear_for_drawing() {}
+
   void MarlinUI::update() { ExtUI::onIdle(); }
 
   void MarlinUI::kill_screen(FSTR_P const error, FSTR_P const component) {

Marlin/src/lcd/marlinui.cpp

@@ -226,6 +226,7 @@ void MarlinUI::init() {
   #endif
 
   init_lcd();
+  clear_lcd();
 
   #if BUTTON_EXISTS(EN1)
     SET_INPUT_PULLUP(BTN_EN1);
@@ -1204,7 +1205,7 @@ void MarlinUI::init() {
       // Change state of drawing flag between screen updates
       if (!drawing_screen) switch (lcdDrawUpdate) {
         case LCDVIEW_CLEAR_CALL_REDRAW:
-          clear_lcd(); break;
+          clear_for_drawing(); break;
         case LCDVIEW_REDRAW_NOW:
           refresh(LCDVIEW_NONE);
         case LCDVIEW_NONE:

Marlin/src/lcd/marlinui.h

@@ -207,11 +207,14 @@ public:
 
   #if HAS_DISPLAY || HAS_DWIN_E3V2
     static void init_lcd();
+    // Erase the LCD contents. Do the lowest-level thing required to clear the LCD.
+    static void clear_lcd();
   #else
     static void init_lcd() {}
+    static void clear_lcd() {}
   #endif
 
-  static void reinit_lcd() { TERN_(REINIT_NOISY_SPI_LCD, init_lcd()); }
+  static void reinit_lcd() { TERN_(REINIT_NOISY_LCD, init_lcd()); }
 
   #if HAS_WIRED_LCD
     static bool detected();
@@ -246,9 +249,6 @@ public:
     static void update_indicators();
   #endif
 
-  // LCD implementations
-  static void clear_lcd();
-
   #if ALL(HAS_MARLINUI_MENU, TOUCH_SCREEN_CALIBRATION)
     static void check_touch_calibration() {
       if (touch_calibration.need_calibration()) currentScreen = touch_calibration_screen;
@@ -520,6 +520,9 @@ public:
 
   #if HAS_DISPLAY
 
+    // Clear the LCD before new drawing. Some LCDs do nothing because they redraw frequently.
+    static void clear_for_drawing();
+
     static void abort_print();
     static void pause_print();
     static void resume_print();
@@ -630,6 +633,7 @@ public:
 
   #else // No LCD
 
+    static void clear_for_drawing() {}
     static void kill_screen(FSTR_P const, FSTR_P const) {}
 
   #endif

Marlin/src/lcd/menu/menu.cpp

@@ -209,7 +209,7 @@ void MarlinUI::goto_screen(screenFunc_t screen, const uint16_t encoder/*=0*/, co
       TERN_(AUTO_BED_LEVELING_UBL, bedlevel.lcd_map_control = false);
     }
 
-    clear_lcd();
+    clear_for_drawing();
 
     // Re-initialize custom characters that may be re-used
     #if HAS_MARLINUI_HD44780

Marlin/src/lcd/menu/menu_ubl.cpp

@@ -96,7 +96,7 @@ void _lcd_mesh_fine_tune(FSTR_P const fmsg) {
 // To capture encoder events UBL will also call ui.capture and ui.release.
 //
 void MarlinUI::ubl_mesh_edit_start(const_float_t initial) {
-  TERN_(HAS_GRAPHICAL_TFT, clear_lcd());
+  TERN_(HAS_GRAPHICAL_TFT, clear_for_drawing());
   mesh_edit_accumulator = initial;
   goto_screen([]{ _lcd_mesh_fine_tune(GET_TEXT_F(MSG_MESH_EDIT_Z)); });
 }

Marlin/src/lcd/tft/touch.cpp

@@ -184,7 +184,7 @@ void Touch::touch(touch_control_t *control) {
     case HEATER:
       int8_t heater;
       heater = control->data;
-      ui.clear_lcd();
+      ui.clear_for_drawing();
       #if HAS_HOTEND
         if (heater >= 0) { // HotEnd
           #if HOTENDS == 1
@@ -213,20 +213,20 @@ void Touch::touch(touch_control_t *control) {
 
       break;
     case FAN:
-      ui.clear_lcd();
+      ui.clear_for_drawing();
       static uint8_t fan, fan_speed;
       fan = 0;
       fan_speed = thermalManager.fan_speed[fan];
       MenuItem_percent::action(GET_TEXT_F(MSG_FIRST_FAN_SPEED), &fan_speed, 0, 255, []{ thermalManager.set_fan_speed(fan, fan_speed); TERN_(LASER_SYNCHRONOUS_M106_M107, planner.buffer_sync_block(BLOCK_BIT_SYNC_FANS));});
       break;
     case FEEDRATE:
-      ui.clear_lcd();
+      ui.clear_for_drawing();
       MenuItem_int3::action(GET_TEXT_F(MSG_SPEED), &feedrate_percentage, SPEED_EDIT_MIN, SPEED_EDIT_MAX);
       break;
 
     #if HAS_EXTRUDERS
       case FLOWRATE:
-        ui.clear_lcd();
+        ui.clear_for_drawing();
         MenuItemBase::itemIndex = control->data;
         #if EXTRUDERS == 1
           MenuItem_int3::action(GET_TEXT_F(MSG_FLOW), &planner.flow_percentage[MenuItemBase::itemIndex], FLOW_EDIT_MIN, FLOW_EDIT_MAX, []{ planner.refresh_e_factor(MenuItemBase::itemIndex); });

Marlin/src/lcd/tft/ui_color_ui.cpp

@@ -79,7 +79,7 @@ void MarlinUI::tft_idle() {
 
   void MarlinUI::bootscreen_completion(const millis_t sofar) {
     if ((BOOTSCREEN_TIMEOUT) > sofar) safe_delay((BOOTSCREEN_TIMEOUT) - sofar);
-    clear_lcd();
+    clear_for_drawing();
   }
 #endif
 

Marlin/src/lcd/tft/ui_common.cpp

@@ -199,7 +199,7 @@ void moveAxis(const AxisEnum axis, const int8_t direction) {
       tft.queue.reset();
       if (!sleepCleared) {
         sleepCleared = true;
-        ui.clear_lcd();
+        ui.clear_for_drawing();
         tft.queue.async();
       }
       touch.idle();
@@ -407,7 +407,7 @@ void MarlinUI::init_lcd() {
     tft.add_glyphs(EXTRA_FONT_NAME);
   #endif
   TERN_(TOUCH_SCREEN, touch.init());
-  clear_lcd();
+  clear_for_drawing();
 }
 
 void MarlinUI::clear_lcd() {
@@ -421,6 +421,8 @@ void MarlinUI::clear_lcd() {
   cursor.set(0, 0);
 }
 
+void MarlinUI::clear_for_drawing() { clear_lcd(); }
+
 #if HAS_LCD_BRIGHTNESS
 
   void MarlinUI::_set_brightness() {
@@ -441,7 +443,7 @@ void MarlinUI::clear_lcd() {
 
     if (stage == CALIBRATION_NONE) {
       defer_status_screen(true);
-      clear_lcd();
+      clear_for_drawing();
       stage = touch_calibration.calibration_start();
     }
     else {

Marlin/src/lcd/tft/ui_move_axis_screen_1024.cpp

@@ -133,7 +133,7 @@ void MarlinUI::move_axis_screen() {
   motionAxisState.blocked = false;
   TERN_(TOUCH_SCREEN, touch.enable());
 
-  ui.clear_lcd();
+  ui.clear_for_drawing();
 
   TERN_(TOUCH_SCREEN, touch.clear());
 

Marlin/src/lcd/tft/ui_move_axis_screen_320.cpp

@@ -146,7 +146,7 @@ void MarlinUI::move_axis_screen() {
   motionAxisState.blocked = false;
   TERN_(TOUCH_SCREEN, touch.enable());
 
-  ui.clear_lcd();
+  ui.clear_for_drawing();
 
   TERN_(TOUCH_SCREEN, touch.clear());
 

Marlin/src/lcd/tft/ui_move_axis_screen_480.cpp

@@ -146,7 +146,7 @@ void MarlinUI::move_axis_screen() {
   motionAxisState.blocked = false;
   TERN_(TOUCH_SCREEN, touch.enable());
 
-  ui.clear_lcd();
+  ui.clear_for_drawing();
 
   TERN_(TOUCH_SCREEN, touch.clear());