🎨 Apply F() to MKS UI errors, assets

Author: thinkyhead

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

@@ -33,11 +33,12 @@
 
 static lv_obj_t *scr;
 
-void lv_draw_error_message(PGM_P const msg) {
+void lv_draw_error_message(FSTR_P const fmsg) {
+  FSTR_P fhalted = F("PRINTER HALTED"), fplease = F("Please Reset");
   SPI_TFT.LCD_clear(0x0000);
-  if (msg) disp_string((TFT_WIDTH - strlen(msg) * 16) / 2, 100, msg, 0xFFFF, 0x0000);
-  disp_string((TFT_WIDTH - strlen("PRINTER HALTED") * 16) / 2, 140, "PRINTER HALTED", 0xFFFF, 0x0000);
-  disp_string((TFT_WIDTH - strlen("Please Reset") * 16) / 2, 180, "Please Reset", 0xFFFF, 0x0000);
+  if (fmsg) disp_string((TFT_WIDTH - strlen_P(FTOP(fmsg)) * 16) / 2, 100, fmsg, 0xFFFF, 0x0000);
+  disp_string((TFT_WIDTH - strlen_P(FTOP(fhalted)) * 16) / 2, 140, fhalted, 0xFFFF, 0x0000);
+  disp_string((TFT_WIDTH - strlen_P(FTOP(fplease)) * 16) / 2, 180, fplease, 0xFFFF, 0x0000);
 }
 
 void lv_clear_error_message() { lv_obj_del(scr); }

Marlin/src/lcd/extui/mks_ui/draw_error_message.h

@@ -29,7 +29,7 @@
   #define PGM_P const char *
 #endif
 
-void lv_draw_error_message(PGM_P const msg);
+void lv_draw_error_message(FSTR_P const fmsg);
 void lv_clear_error_message();
 
 #ifdef __cplusplus

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

@@ -697,24 +697,28 @@ void disp_char_1624(uint16_t x, uint16_t y, uint8_t c, uint16_t charColor, uint1
   }
 }
 
-void disp_string(uint16_t x, uint16_t y, const char * string, uint16_t charColor, uint16_t bkColor) {
-  while (*string != '\0') {
-    disp_char_1624(x, y, *string, charColor, bkColor);
-    string++;
-    x += 16;
-  }
+void disp_string(uint16_t x, uint16_t y, const char * cstr, uint16_t charColor, uint16_t bkColor) {
+  for (char c; (c = *cstr); cstr++, x += 16)
+    disp_char_1624(x, y, c, charColor, bkColor);
+}
+
+void disp_string(uint16_t x, uint16_t y, FSTR_P const fstr, uint16_t charColor, uint16_t bkColor) {
+  PGM_P pstr = FTOP(fstr);
+  for (char c; (c = pgm_read_byte(pstr)); pstr++, x += 16)
+    disp_char_1624(x, y, c, charColor, bkColor);
 }
 
 void disp_assets_update() {
   SPI_TFT.LCD_clear(0x0000);
-  disp_string(100, 140, "Assets Updating...", 0xFFFF, 0x0000);
+  disp_string(100, 140, F("Assets Updating..."), 0xFFFF, 0x0000);
 }
 
-void disp_assets_update_progress(const char *msg) {
-  char buf[30];
-  memset(buf, ' ', COUNT(buf));
-  strncpy(buf, msg, strlen(msg));
-  buf[COUNT(buf) - 1] = '\0';
+void disp_assets_update_progress(FSTR_P const fmsg) {
+  static constexpr int buflen = 30;
+  char buf[buflen];
+  memset(buf, ' ', buflen);
+  strncpy_P(buf, FTOP(fmsg), buflen - 1);
+  buf[buflen - 1] = '\0';
   disp_string(100, 165, buf, 0xFFFF, 0x0000);
 }
 

Marlin/src/lcd/extui/mks_ui/mks_hardware.h

@@ -36,6 +36,7 @@
 #endif
 
 // String display and assets
-void disp_string(uint16_t x, uint16_t y, const char * string, uint16_t charColor, uint16_t bkColor);
+void disp_string(uint16_t x, uint16_t y, const char * cstr, uint16_t charColor, uint16_t bkColor);
+void disp_string(uint16_t x, uint16_t y, FSTR_P const fstr, uint16_t charColor, uint16_t bkColor);
 void disp_assets_update();
-void disp_assets_update_progress(const char *msg);
+void disp_assets_update_progress(FSTR_P const msg);