#include <TFT_eSPI.h>
#include <SPI.h>       // this is needed for display
#include <Wire.h>      // this is needed for FT6206
#include <Adafruit_GFX.h>
#include <Adafruit_ILI9341.h>
#include <Adafruit_FT6206.h>
Adafruit_FT6206 ctp = Adafruit_FT6206();
// The display also uses hardware SPI, plus #9 & #10
#define TFT_CS 5
#define TFT_DC 17
#define TFT_MOSI 23
#define TFT_MISO 19
#define TFT_SCLK 18
#define TFT_SCL 22
#define TFT_SDA 21

//color
#define BLACK 0x0000 // Use black for chart background.
#define BLUE 0x001F // Define up to 7 "standard" colors for pie slices.
#define RED 0xF800 // More than 7 slices stretches use of this small display!
#define GREEN 0x07E0
#define CYAN 0x07FF
#define MAGENTA 0xF81F
#define YELLOW 0xFFE0
#define WHITE 0xFFFF
#define GRAY 0xc658


//page postion 
int page_no =0;

int x_pos = 0; // X position  
int y_pos = 50; // Y position  
int width = 100; // Width of the rectangle  
int height = 30; // Height of the rectangle  
uint16_t fillColor = TFT_BLUE; // Fill color of the rectangle  
uint16_t textColor = TFT_WHITE; // Text color  
int textSize = 1; // Text size  

Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC);
//TFT_eSPI tft = TFT_eSPI();

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  
  tft.begin();
  tft.setRotation(0);
  //String text = "MENU";
  //btn_1(x_pos, y_pos, width, height, text);
  page_0();
  if (! ctp.begin(40)) {  // pass in 'sensitivity' coefficient
    Serial.println("Couldn't start FT6206 touchscreen controller");
    while (1);
  }
  
}

void loop() {
  // Check if the touchscreen is pressed  
  if (ctp.touched()) {
    // Retrieve a point  
    TS_Point p = ctp.getPoint();

    p.x = map(p.x, 0, 240, 240, 0);
    p.y = map(p.y, 0, 320, 320, 0);

    tft.fillCircle(p.x, p.y, 2, TFT_WHITE);
    Serial.print("x,y = ");
    Serial.print(p.x);
    Serial.print(",");
    Serial.println(p.y);

    if(page_no ==0 && p.x >= 0 && p.x <=100 && p.y >=50 && p.y <=80 ){
      clearScreen();
      String text = "New Position";
      btn_1(x_pos, y_pos, width, height, text);

    }//test check pos
  }//check touch screen scope

  
  delay(100); // Small delay to avoid flooding the serial monitor 
}

void btn_1(int x, int y, int width, int height, String txt){
  // Fill the rectangle  
  tft.fillRect(x, y_pos, width, height, fillColor);  

  // Set text properties  
  tft.setTextColor(textColor); // Set text color  
  tft.setTextSize(textSize);   // Set text size  
  tft.setCursor(x_pos+5, y_pos+5); // Set cursor position inside the rectangle  

  // Draw text inside the filled rectangle  
  tft.println(txt); // Print text

}//btn 1 scope

void btn_p1(){
// Fill the rectangle  
  int x_pos = 10; // X position  
  int y_pos = 100; // Y position  
  int width = 100; // Width of the rectangle  
  int height = 30; // Height of the rectangle  
  uint16_t fillColor = GRAY; // Fill color of the rectangle  
  uint16_t textColor = BLACK; // Text color  
  int textSize = 2; // Text size  
  String txt = "PAGE 1";
  // Fill the rectangle  
  tft.fillRect(x_pos, y_pos, width, height, fillColor);  
  // Set text properties  
  tft.setTextColor(textColor); // Set text color  
  tft.setTextSize(textSize);   // Set text size  
  tft.setCursor(x_pos, y_pos); // Set cursor position inside the rectangle
  tft.println(txt);//print text

}//btn page 2 scope

void btn_p2(){
// Fill the rectangle  
  int x_pos = 120; // X position  
  int y_pos = 100; // Y position  
  int width = 100; // Width of the rectangle  
  int height = 30; // Height of the rectangle  
  uint16_t fillColor = GRAY; // Fill color of the rectangle  
  uint16_t textColor = BLACK; // Text color  
  int textSize = 2; // Text size  
  String txt = "PAGE 2";
  // Fill the rectangle  
  tft.fillRect(x_pos, y_pos, width, height, fillColor);  
  // Set text properties  
  tft.setTextColor(textColor); // Set text color  
  tft.setTextSize(textSize);   // Set text size  
  tft.setCursor(x_pos+10, y_pos+10); // Set cursor position inside the rectangle
  tft.println(txt);//print text

}//btn page 2 scope

//page 0 - main menu function
void page_0(){
  int x_pos = 50; // X position  
  int y_pos = 0; // Y position  
  int width = 100; // Width of the rectangle  
  int height = 30; // Height of the rectangle  
  uint16_t fillColor = GRAY; // Fill color of the rectangle  
  uint16_t textColor = YELLOW; // Text color  
  int textSize = 2; // Text size  
  String txt = "Main Menu";
  
  // Set text properties  
  tft.setTextColor(textColor); // Set text color  
  tft.setTextSize(textSize);   // Set text size  
  tft.setCursor(x_pos, y_pos); // Set cursor position inside the rectangle
  tft.println(txt);//print text
  //draw btn
  btn_p1();
  btn_p2();
}//page 0 main menu scope

//clearScreen function
void clearScreen() {  
  tft.fillScreen(ILI9341_BLACK); // Fill the screen with a black color  
  // Optionally, you can choose other colors like ILI9341_WHITE, ILI9341_RED, etc.  
}