Space-separate scrolling Status Message (#21523)

Co-authored-by: Scott Lahteine <github@thinkyhead.com>

Marlin/src/lcd/HD44780/marlinui_HD44780.cpp

@@ -684,12 +684,15 @@ void MarlinUI::draw_status_message(const bool blink) {
 
       // If the remaining string doesn't completely fill the screen
       if (rlen < LCD_WIDTH) {
-        lcd_put_wchar('.');                   // Always at 1+ spaces left, draw a dot
         uint8_t chars = LCD_WIDTH - rlen;     // Amount of space left in characters
-        if (--chars) {                        // Draw a second dot if there's space
+        lcd_put_wchar(' ');                   // Always at 1+ spaces left, draw a space
-          lcd_put_wchar('.');
+        if (--chars) {                        // Draw a second space if there's room
-          if (--chars)
+          lcd_put_wchar(' ');
-            lcd_put_u8str_max(status_message, chars); // Print a second copy of the message
+          if (--chars) {                      // Draw a third space if there's room
+            lcd_put_wchar(' ');
+            if (--chars)
+              lcd_put_u8str_max(status_message, chars); // Print a second copy of the message
+          }
         }
       }
       if (last_blink != blink) {

Marlin/src/lcd/TFTGLCD/marlinui_TFTGLCD.cpp

@@ -581,12 +581,15 @@ void MarlinUI::draw_status_message(const bool blink) {
 
       // If the remaining string doesn't completely fill the screen
       if (rlen < LCD_WIDTH) {
-        lcd.write('.');                       // Always at 1+ spaces left, draw a dot
         uint8_t chars = LCD_WIDTH - rlen;     // Amount of space left in characters
-        if (--chars) {                        // Draw a second dot if there's space
+        lcd.write(' ');                       // Always at 1+ spaces left, draw a space
-          lcd.write('.');
+        if (--chars) {                        // Draw a second space if there's room
-          if (--chars)
+          lcd.write(' ');
-            lcd_put_u8str_max(status_message, chars); // Print a second copy of the message
+          if (--chars) {                      // Draw a third space if there's room
+            lcd.write(' ');
+            if (--chars)
+              lcd_put_u8str_max(status_message, chars); // Print a second copy of the message
+          }
         }
       }
       if (last_blink != blink) {

Marlin/src/lcd/dogm/status_screen_DOGM.cpp

@@ -959,13 +959,16 @@ void MarlinUI::draw_status_message(const bool blink) {
 
       // If the remaining string doesn't completely fill the screen
       if (rlen < lcd_width) {
-        lcd_put_wchar('.');                     // Always at 1+ spaces left, draw a dot
         uint8_t chars = lcd_width - rlen;       // Amount of space left in characters
-        if (--chars) {                          // Draw a second dot if there's space
+        lcd_put_wchar(' ');                     // Always at 1+ spaces left, draw a space
-          lcd_put_wchar('.');
+        if (--chars) {                          // Draw a second space if there's room
-          if (--chars) {                        // Print a second copy of the message
+          lcd_put_wchar(' ');
-            lcd_put_u8str_max(status_message, pixel_width - (rlen + 2) * (MENU_FONT_WIDTH));
+          if (--chars) {                        // Draw a third space if there's room
             lcd_put_wchar(' ');
+            if (--chars) {                      // Print a second copy of the message
+              lcd_put_u8str_max(status_message, pixel_width - (rlen + 2) * (MENU_FONT_WIDTH));
+              lcd_put_wchar(' ');
+            }
           }
         }
       }

Marlin/src/lcd/dogm/status_screen_lite_ST7920.cpp

@@ -642,11 +642,14 @@ void ST7920_Lite_Status_Screen::draw_status_message() {
 
       // If the remaining string doesn't completely fill the screen
       if (rlen < TEXT_MODE_LCD_WIDTH) {
-        write_byte('.');                        // Always at 1+ spaces left, draw a dot
+        uint8_t chars = TEXT_MODE_LCD_WIDTH - rlen; // Amount of space left in characters
-        uint8_t chars = TEXT_MODE_LCD_WIDTH - rlen;       // Amount of space left in characters
+        write_byte(' ');                        // Always at 1+ spaces left, draw a space
-        if (--chars) {                          // Draw a second dot if there's space
+        if (--chars) {                          // Draw a second space if there's room
-          write_byte('.');
+          write_byte(' ');
-          if (--chars) write_str(str, chars);   // Print a second copy of the message
+          if (--chars) {                        // Draw a third space if there's room
+            write_byte(' ');
+            if (--chars) write_str(str, chars); // Print a second copy of the message
+          }
         }
       }
       ui.advance_status_scroll();