Allow drawFloat with decimal places = 0

See #1639

TFT_eSPI.cpp

@@ -5105,6 +5105,7 @@ int16_t TFT_eSPI::drawFloat(float floatNumber, uint8_t dp, int32_t poX, int32_t
   uint8_t ptr = 0;            // Initialise pointer for array
   int8_t  digits = 1;         // Count the digits to avoid array overflow
   float rounding = 0.5;       // Round up down delta
+  bool negative = false;
 
   if (dp > 7) dp = 7; // Limit the size of decimal portion
 
@@ -5116,10 +5117,16 @@ int16_t TFT_eSPI::drawFloat(float floatNumber, uint8_t dp, int32_t poX, int32_t
     str[ptr] = 0; // Put a null in the array as a precaution
     digits = 0;   // Set digits to 0 to compensate so pointer value can be used later
     floatNumber = -floatNumber; // Make positive
+    negative = true;
   }
 
   floatNumber += rounding; // Round up or down
 
+  if (dp == 0) {
+    if (negative) floatNumber = -floatNumber;
+    return drawNumber((long)floatNumber, poX, poY, font);
+  }
+
   // For error put ... in string and return (all TFT_eSPI library fonts contain . character)
   if (floatNumber >= 2147483647) {
     strcpy(str, "...");

TFT_eSPI.h

@@ -16,7 +16,7 @@
 #ifndef _TFT_eSPIH_
 #define _TFT_eSPIH_
 
-#define TFT_ESPI_VERSION "2.4.38"
+#define TFT_ESPI_VERSION "2.4.39"
 
 // Bit level feature flags
 // Bit 0 set: viewport capability

library.json

 {
   "name": "TFT_eSPI",
-  "version": "2.4.38",
+  "version": "2.4.39",
   "keywords": "Arduino, tft, ePaper, display, Pico, RP2040, STM32, ESP8266, NodeMCU, ESP32, M5Stack, ILI9341, ST7735, ILI9163, S6D02A1, ILI9481, ILI9486, ILI9488, ST7789, RM68140, SSD1351, SSD1963, ILI9225, HX8357D",
   "description": "A TFT and ePaper SPI graphics library with optimisation for Raspberry Pi Pico, ESP8266, ESP32 and STM32",
   "repository":

library.properties

 name=TFT_eSPI
-version=2.4.38
+version=2.4.39
 author=Bodmer
 maintainer=Bodmer
 sentence=TFT graphics library for Arduino processors with performance optimisation for RP2040, STM32, ESP8266 and ESP32