#include <Adafruit_GFX.h>
#include <Adafruit_ILI9341.h>
#include<SPI.h>

#define TFT_CS    15
#define TFT_RST   22
#define TFT_DC    2
#define SWITCH_PIN 5  

Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC, TFT_RST);

int currentBox = 0;
bool switchPressed = false;

void setup() {
  // Initialize the TFT display
  tft.begin();
  tft.setRotation(0); // Set rotation to portrait mode
  tft.fillScreen(ILI9341_BLACK);
  // Draw four vertical boxes
  drawBoxes();
  
  // Initialize switch pin
  pinMode(SWITCH_PIN, INPUT_PULLUP);

  // Highlight the first box
  highlightBox(currentBox);
}

void drawBoxes() {
  
  int boxWidth = tft.width() / 4;
  for (int i = 0; i < 4; i++) {
    tft.drawRect(i * boxWidth, 0, boxWidth, tft.height(), ILI9341_WHITE);
  }
}

void highlightBox(int box) {
  int boxWidth = tft.width() / 4;
  tft.fillRect(box * boxWidth, 0, boxWidth, tft.height(), ILI9341_BLUE);
}

void moveCursor() {
  // Clear previous box
  int boxWidth = tft.width() / 4;
  tft.fillRect(currentBox * boxWidth, 0, boxWidth, tft.height(), ILI9341_BLACK);

  // Move to the next box
  currentBox = (currentBox + 1) % 4;

  // Highlight the new box
  highlightBox(currentBox);
}

void loop() {
  if (digitalRead(SWITCH_PIN) == LOW && !switchPressed) {
    delay(200); // Debounce delay
    switchPressed = true;
    moveCursor();
  } else if (digitalRead(SWITCH_PIN) == HIGH) {
    switchPressed = false;
  }
}