Fix #2103 and update for latest ESP8266 board package

Fix H and V gradient use in sprite
New ESP8266 board package uses RDUINO_ARCH_ESP8266
old package defined ESP8266

TFT_eSPI.cpp

@@ -23,7 +23,7 @@
   #else
     #include "Processors/TFT_eSPI_ESP32.c"
   #endif
-#elif defined (ESP8266)
+#elif defined (ARDUINO_ARCH_ESP8266)
   #include "Processors/TFT_eSPI_ESP8266.c"
 #elif defined (STM32) // (_VARIANT_ARDUINO_STM32_) stm32_def.h
   #include "Processors/TFT_eSPI_STM32.c"
@@ -624,7 +624,7 @@ void TFT_eSPI::init(uint8_t tc)
     sclkpinmask = (uint32_t) digitalPinToBitMask(TFT_SCLK);
   #endif
 
-  #if defined (TFT_SPI_OVERLAP) && defined (ESP8266)
+  #if defined (TFT_SPI_OVERLAP) && defined (ARDUINO_ARCH_ESP8266)
     // Overlap mode SD0=MISO, SD1=MOSI, CLK=SCLK must use D3 as CS
     //    pins(int8_t sck, int8_t miso, int8_t mosi, int8_t ss);
     //spi.pins(        6,          7,           8,          0);
@@ -653,7 +653,7 @@ void TFT_eSPI::init(uint8_t tc)
   // Set to output once again in case MISO is used for CS
   pinMode(TFT_CS, OUTPUT);
   digitalWrite(TFT_CS, HIGH); // Chip select high (inactive)
-#elif defined (ESP8266) && !defined (TFT_PARALLEL_8_BIT) && !defined (RP2040_PIO_SPI)
+#elif defined (ARDUINO_ARCH_ESP8266) && !defined (TFT_PARALLEL_8_BIT) && !defined (RP2040_PIO_SPI)
   spi.setHwCs(1); // Use hardware SS toggling
 #endif
 
@@ -4112,21 +4112,19 @@ void TFT_eSPI::fillRectVGradient(int16_t x, int16_t y, int16_t w, int16_t h, uin
 
   if ((w < 1) || (h < 1)) return;
 
-  begin_tft_write();
+  begin_nin_write();
-
-  setWindow(x, y, x + w - 1, y + h - 1);
 
   float delta = -255.0/h;
   float alpha = 255.0;
   uint32_t color = color1;
 
   while (h--) {
-    pushBlock(color, w);
+    drawFastHLine(x, y++, w, color);
     alpha += delta;
     color = alphaBlend((uint8_t)alpha, color1, color2);
   }
 
-  end_tft_write();
+  end_nin_write();
 }
 
 
@@ -4152,7 +4150,7 @@ void TFT_eSPI::fillRectHGradient(int16_t x, int16_t y, int16_t w, int16_t h, uin
 
   if ((w < 1) || (h < 1)) return;
 
-  begin_tft_write();
+  begin_nin_write();
 
   float delta = -255.0/w;
   float alpha = 255.0;
@@ -4164,7 +4162,7 @@ void TFT_eSPI::fillRectHGradient(int16_t x, int16_t y, int16_t w, int16_t h, uin
     color = alphaBlend((uint8_t)alpha, color1, color2);
   }
 
-  end_tft_write();
+  end_nin_write();
 }
 
 
@@ -4452,7 +4450,7 @@ uint32_t TFT_eSPI::alphaBlend24(uint8_t alpha, uint32_t fgc, uint32_t bgc, uint8
 ** Description:             draw characters piped through serial stream
 ***************************************************************************************/
 /* // Not all processors support buffered write
-#ifndef ESP8266 // Avoid ESP8266 board package bug
+#ifndef ARDUINO_ARCH_ESP8266 // Avoid ESP8266 board package bug
 size_t TFT_eSPI::write(const uint8_t *buf, size_t len)
 {
   inTransaction = true;

TFT_eSPI.h

@@ -16,7 +16,7 @@
 #ifndef _TFT_eSPIH_
 #define _TFT_eSPIH_
 
-#define TFT_ESPI_VERSION "2.4.78"
+#define TFT_ESPI_VERSION "2.4.79"
 
 // Bit level feature flags
 // Bit 0 set: viewport capability
@@ -40,6 +40,14 @@
   #include "TFT_config.h"
 #endif
 
+// New ESP8266 board package uses ARDUINO_ARCH_ESP8266
+// old package defined ESP8266
+#if defined (ESP8266)
+  #ifndef ARDUINO_ARCH_ESP8266
+    #define ARDUINO_ARCH_ESP8266
+  #endif
+#endif
+
 // The following lines allow the user setup to be included in the sketch folder, see
 // "Sketch_with_tft_setup" generic example.
 #if !defined __has_include
@@ -75,7 +83,7 @@
   })
 #elif defined(__AVR__)
   #include <avr/pgmspace.h>
-#elif defined(ESP8266) || defined(ESP32)
+#elif defined(ARDUINO_ARCH_ESP8266) || defined(ESP32)
   #include <pgmspace.h>
 #else
   #define PROGMEM
@@ -88,7 +96,7 @@
   #include "Processors/TFT_eSPI_ESP32_C3.h"
 #elif defined (ESP32)
   #include "Processors/TFT_eSPI_ESP32.h"
-#elif defined (ESP8266)
+#elif defined (ARDUINO_ARCH_ESP8266)
   #include "Processors/TFT_eSPI_ESP8266.h"
 #elif defined (STM32)
   #include "Processors/TFT_eSPI_STM32.h"
@@ -678,6 +686,7 @@ class TFT_eSPI : public Print { friend class TFT_eSprite; // Sprite class has ac
 
 
   // DMA support functions - these are currently just for SPI writes when using the ESP32 or STM32 processors
+  // DMA works also on RP2040 and PIO SPI, 8 bit parallel and 16 bit parallel
            // Bear in mind DMA will only be of benefit in particular circumstances and can be tricky
            // to manage by noobs. The functions have however been designed to be noob friendly and
            // avoid a few DMA behaviour "gotchas".

library.json

@@ -1,6 +1,6 @@
 {
   "name": "TFT_eSPI",
-  "version": "2.4.78",
+  "version": "2.4.79",
   "keywords": "Arduino, tft, display, ttgo, LilyPi, WT32-SC01, ePaper, display, Pico, RP2040 Nano Connect, RP2040, STM32, ESP8266, NodeMCU, ESP32, M5Stack, ILI9341, ST7735, ILI9163, S6D02A1, ILI9481, ILI9486, ILI9488, ST7789, ST7796, RM68140, SSD1351, SSD1963, ILI9225, HX8357D, GC9A01, R61581",
   "description": "A TFT and ePaper (SPI or parallel interface) graphics library with optimisation for Raspberry Pi Pico, RP2040, ESP8266, ESP32 and STM32 processors",
   "repository":

library.properties

@@ -1,5 +1,5 @@
 name=TFT_eSPI
-version=2.4.78
+version=2.4.79
 author=Bodmer
 maintainer=Bodmer
 sentence=TFT graphics library for Arduino processors with performance optimisation for RP2040, STM32, ESP8266 and ESP32