/***************************************************
  This is a library for the ST7789 IPS SPI display.

  Originally written by Limor Fried/Ladyada for
  Adafruit Industries.

  Modified by Ananev Ilia
 ****************************************************/

#include <Adafruit_GFX.h>    // Core graphics library by Adafruit
#include <Arduino_ST7789.h> // Hardware-specific library for ST7789 (with or without CS pin)
#include <SPI.h>

// #define TFT_DC    8
// #define TFT_RST   9
// #define TFT_CS    10 // only for displays with CS pin
// #define TFT_MOSI  11   // for hardware SPI data pin (all of available pins)
// #define TFT_SCLK  13   // for hardware SPI sclk pin (all of available pins)

#define TFT_MISO -1
#define TFT_MOSI 23
#define TFT_SCLK 18
#define TFT_CS   5  // Chip select control pin
#define TFT_DC   16  // Data Command control pin
#define TFT_RST   17  // Reset pin (could connect to RST pin)

//You can use different type of hardware initialization
//using hardware SPI (11, 13 on UNO; 51, 52 on MEGA; ICSP-4, ICSP-3 on DUE and etc)
//Arduino_ST7789 tft = Arduino_ST7789(TFT_DC, TFT_RST); //for display without CS pin
//Arduino_ST7789 tft = Arduino_ST7789(TFT_DC, TFT_RST, TFT_CS); //for display with CS pin
//or you can use software SPI on all available pins (slow)
//Arduino_ST7789 tft = Arduino_ST7789(TFT_DC, TFT_RST, TFT_MOSI, TFT_SCLK); //for display without CS pin
Arduino_ST7789 tft = Arduino_ST7789(TFT_DC, TFT_RST, TFT_MOSI, TFT_SCLK, TFT_CS); //for display with CS pin
// Arduino_ST7789 tft = Arduino_ST7789(-1, TFT_RST, TFT_MOSI, TFT_SCLK, TFT_CS); //for display with CS pin and DC via 9bit SPI


float p = 3.1415926;

void setup(void)
{
    Serial.begin(9600);
    Serial.print("Hello! ST7789 TFT Test");

    tft.init(240, 320);   // initialize a ST7789 chip, 240x240 pixels
    tft.setRotation(0);
    Serial.println("Initialized");

    uint16_t time = millis();
    tft.fillScreen(BLACK);
    time = millis() - time;

    Serial.println(time, DEC);
    delay(500);

    // large block of text
    tft.fillScreen(BLACK);
    testdrawtext("Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur adipiscing ante sed nibh tincidunt feugiat. Maecenas enim massa, fringilla sed malesuada et, malesuada sit amet turpis. Sed porttitor neque ut ante pretium vitae malesuada nunc bibendum. Nullam aliquet ultrices massa eu hendrerit. Ut sed nisi lorem. In vestibulum purus a tortor imperdiet posuere. ", WHITE);
    delay(1000);

    // tft print function
    tftPrintTest();
    delay(4000);

    // a single pixel
    tft.drawPixel(tft.width() / 2, tft.height() / 2, GREEN);
    delay(500);

    // line draw test
    testlines(YELLOW);
    delay(500);

    // optimized lines
    testfastlines(RED, BLUE);
    delay(500);

    testdrawrects(GREEN);
    delay(500);

    testfillrects(YELLOW, MAGENTA);
    delay(500);

    tft.fillScreen(BLACK);
    testfillcircles(10, BLUE);
    testdrawcircles(10, WHITE);
    delay(500);

    testroundrects();
    delay(500);

    testtriangles();
    delay(500);

    mediabuttons();
    delay(500);

    Serial.println("done");
    delay(1000);
}

void loop()
{
    tft.invertDisplay(true);
    delay(500);
    tft.invertDisplay(false);
    delay(500);
}

void testlines(uint16_t color)
{
    tft.fillScreen(BLACK);
    for (int16_t x = 0; x < tft.width(); x += 6) {
        tft.drawLine(0, 0, x, tft.height() - 1, color);
    }
    for (int16_t y = 0; y < tft.height(); y += 6) {
        tft.drawLine(0, 0, tft.width() - 1, y, color);
    }

    tft.fillScreen(BLACK);
    for (int16_t x = 0; x < tft.width(); x += 6) {
        tft.drawLine(tft.width() - 1, 0, x, tft.height() - 1, color);
    }
    for (int16_t y = 0; y < tft.height(); y += 6) {
        tft.drawLine(tft.width() - 1, 0, 0, y, color);
    }

    tft.fillScreen(BLACK);
    for (int16_t x = 0; x < tft.width(); x += 6) {
        tft.drawLine(0, tft.height() - 1, x, 0, color);
    }
    for (int16_t y = 0; y < tft.height(); y += 6) {
        tft.drawLine(0, tft.height() - 1, tft.width() - 1, y, color);
    }

    tft.fillScreen(BLACK);
    for (int16_t x = 0; x < tft.width(); x += 6) {
        tft.drawLine(tft.width() - 1, tft.height() - 1, x, 0, color);
    }
    for (int16_t y = 0; y < tft.height(); y += 6) {
        tft.drawLine(tft.width() - 1, tft.height() - 1, 0, y, color);
    }
}

void testdrawtext(char *text, uint16_t color)
{
    tft.setCursor(0, 0);
    tft.setTextColor(color);
    tft.setTextWrap(true);
    tft.print(text);
}

void testfastlines(uint16_t color1, uint16_t color2)
{
    tft.fillScreen(BLACK);
    for (int16_t y = 0; y < tft.height(); y += 5) {
        tft.drawFastHLine(0, y, tft.width(), color1);
    }
    for (int16_t x = 0; x < tft.width(); x += 5) {
        tft.drawFastVLine(x, 0, tft.height(), color2);
    }
}

void testdrawrects(uint16_t color)
{
    tft.fillScreen(BLACK);
    for (int16_t x = 0; x < tft.width(); x += 6) {
        tft.drawRect(tft.width() / 2 - x / 2, tft.height() / 2 - x / 2, x, x, color);
    }
}

void testfillrects(uint16_t color1, uint16_t color2)
{
    tft.fillScreen(BLACK);
    for (int16_t x = tft.width() - 1; x > 6; x -= 6) {
        tft.fillRect(tft.width() / 2 - x / 2, tft.height() / 2 - x / 2, x, x, color1);
        tft.drawRect(tft.width() / 2 - x / 2, tft.height() / 2 - x / 2, x, x, color2);
    }
}

void testfillcircles(uint8_t radius, uint16_t color)
{
    for (int16_t x = radius; x < tft.width(); x += radius * 2) {
        for (int16_t y = radius; y < tft.height(); y += radius * 2) {
            tft.fillCircle(x, y, radius, color);
        }
    }
}

void testdrawcircles(uint8_t radius, uint16_t color)
{
    for (int16_t x = 0; x < tft.width() + radius; x += radius * 2) {
        for (int16_t y = 0; y < tft.height() + radius; y += radius * 2) {
            tft.drawCircle(x, y, radius, color);
        }
    }
}

void testtriangles()
{
    tft.fillScreen(BLACK);
    int color = 0xF800;
    int t;
    int w = tft.width() / 2;
    int x = tft.height() - 1;
    int y = 0;
    int z = tft.width();
    for (t = 0 ; t <= 15; t++) {
        tft.drawTriangle(w, y, y, x, z, x, color);
        x -= 4;
        y += 4;
        z -= 4;
        color += 100;
    }
}

void testroundrects()
{
    tft.fillScreen(BLACK);
    int color = 100;
    int i;
    int t;
    for (t = 0 ; t <= 4; t += 1) {
        int x = 0;
        int y = 0;
        int w = tft.width() - 2;
        int h = tft.height() - 2;
        for (i = 0 ; i <= 16; i += 1) {
            tft.drawRoundRect(x, y, w, h, 5, color);
            x += 2;
            y += 3;
            w -= 4;
            h -= 6;
            color += 1100;
        }
        color += 100;
    }
}

void tftPrintTest()
{
    tft.setTextWrap(false);
    tft.fillScreen(BLACK);
    tft.setCursor(0, 30);
    tft.setTextColor(RED);
    tft.setTextSize(1);
    tft.println("Hello World!");
    tft.setTextColor(YELLOW);
    tft.setTextSize(2);
    tft.println("Hello World!");
    tft.setTextColor(GREEN);
    tft.setTextSize(3);
    tft.println("Hello World!");
    tft.setTextColor(BLUE);
    tft.setTextSize(4);
    tft.print(1234.567);
    delay(1500);
    tft.setCursor(0, 0);
    tft.fillScreen(BLACK);
    tft.setTextColor(WHITE);
    tft.setTextSize(0);
    tft.println("Hello World!");
    tft.setTextSize(1);
    tft.setTextColor(GREEN);
    tft.print(p, 6);
    tft.println(" Want pi?");
    tft.println(" ");
    tft.print(8675309, HEX); // print 8,675,309 out in HEX!
    tft.println(" Print HEX!");
    tft.println(" ");
    tft.setTextColor(WHITE);
    tft.println("Sketch has been");
    tft.println("running for: ");
    tft.setTextColor(MAGENTA);
    tft.print(millis() / 1000);
    tft.setTextColor(WHITE);
    tft.print(" seconds.");
}

void mediabuttons()
{
    // play
    tft.fillScreen(BLACK);
    tft.fillRoundRect(25, 10, 78, 60, 8, WHITE);
    tft.fillTriangle(42, 20, 42, 60, 90, 40, RED);
    delay(500);
    // pause
    tft.fillRoundRect(25, 90, 78, 60, 8, WHITE);
    tft.fillRoundRect(39, 98, 20, 45, 5, GREEN);
    tft.fillRoundRect(69, 98, 20, 45, 5, GREEN);
    delay(500);
    // play color
    tft.fillTriangle(42, 20, 42, 60, 90, 40, BLUE);
    delay(50);
    // pause color
    tft.fillRoundRect(39, 98, 20, 45, 5, RED);
    tft.fillRoundRect(69, 98, 20, 45, 5, RED);
    // play color
    tft.fillTriangle(42, 20, 42, 60, 90, 40, GREEN);
}