graphics_arduino_gfx.h

#ifndef GRAPHICS_ARDUINO_GFX_ESP32_H
#define GRAPHICS_ARDUINO_GFX_ESP32_H

#include <Arduino_GFX_Library.h>

#include <graphics.h>
#include "colours.h"

#define RESOLUTION_X 800
#define RESOLUTION_Y 480

#define ST7796_PIN_BL 27
#define ST7796_PWM_CHANNEL_BL 12
#define ST7796_PWM_FREQ_BL 5000
#define ST7796_PWM_BITS_BL 8
#define ST7796_PWM_MAX_BL ((1 << ST7796_PWM_BITS_BL) - 1)

// extern void set_display_brightness(float brightness);

class Graphics_Arduino_GFX : public Graphics {
public:
    Graphics_Arduino_GFX();
    ~Graphics_Arduino_GFX();
    void init() override;
    void fillScreen(int color) override;
    void drawString(String text, int x, int y) override;
    void drawLine(int x0, int y0, int x1, int y1, int color) override;
    void fillRect(int x, int y, int w, int h, int color) override;
    void drawRect(int x, int y, int w, int h, int color) override;
    void drawFloat(float floatNumber, int decimal, int x, int y, int font) override;
    void drawTriangle(int x0, int y0, int x1, int y1, int x2, int y2, int color) override;
    void fillTriangle(int x0, int y0, int x1, int y1, int x2, int y2, int color) override;
    int fontHeight() override;
    int textWidth(String text) override;
    void setTextSize(int size) override;
    void setTextDatum(int datum) override;
    void setTextColor(int color, int background_colour=BLACK) override;
    int getTextSize() override;
    int getTextColor() override;
    int getTextDatum() override;

private:
    unsigned int text_color;
    int text_datum;
}; 

#endif