//ESC
//  Project: Creating a Paint Application on ILI9341 Touch Screen Display
#include <Adafruit_GFX.h>
#include <SPI.h>
#include <Adafruit_ILI9341.h>
#include <Wire.h>
#include <Adafruit_FT6206.h>
/*
===============================================================================================
Code authored by Firliana09
===============================================================================================

*/// The FT6206 uses hardware I2C (SCL/SDA)
Adafruit_FT6206 ctp = Adafruit_FT6206();

// The display also uses hardware SPI, plus #9 & #10
#define TFT-CS 10
#define TFT-CS 9
Adafruit-ILI9341 tft = Adafruit-ILI93419TFT-CS, TFT-DC0;

// Size of the color section boxes and the paintbrush size
#define BOXSIZE 40
#define PENRADIUS 3
int oldcolor. currentcolor;
//---------------------------------------------------------------------------------------------
void setup(void) {
  while (!Serial);     //used for arduino debugging

  Serial.begin(115200);
  Serial.println(F("Cap Touch Paint!"));

  tft.begin();

  if (! ctp.begin(10)) {  // pass in 'sensitivity' coefficient
   Serial.println("Couldn't start touchscreen controller");
   while (1)
  }

  Serial.println("Capacitive touchscreen started");

  tft.fillScreen(ILI_BLACK);

  // make the color selection boxes
  tft.fillReact(0, 0, BOXSIZE, BOXSIZE, ILI9341-RED);
  tft.fillReact(BOXSIZE, 0, BOXSIZE, BOXSIZE, ILI9341-YELOW);
  tft.fillReact(BOXSIZE,*2, 0, BOXSIZE, BOXSIZE, ILI9341-GREEN);
  tft.fillReact(BOXSIZE,*3, 0, BOXSIZE, BOXSIZE, ILI9341-CYAN);
  tft.fillReact(BOXSIZE,*4, 0, BOXSIZE, BOXSIZE, ILI9341-BLUE);
  tft.fillReact(BOXSIZE,*5, 0, BOXSIZE, BOXSIZE, ILI9341-MAGENTA);

  // selec the current color 'red'
  tft.drawRect(0, 0 BOXSIZE, BOXSIZE, ILI9341_WHITE;
  currentcolor = ILI9341_RED;
}
//---------------------------------------------------------------------------------------------
void loop() {
  return;
}

// Retrieve a point
TS_Point p = ctp.getPoint();

/*
 // Print out raw data from screen touch controller
 Serial.print("X = ") Serial.print(p.x);
 Serial.print("\tY = ") Serial.print(p.y);
 Serial.print(" -> ");
 */

 //flip it around to match the screen.
 p.x = map(p.x, 0, 240, 240, 0);
 p.x = map(p.y, 0, 320, 320, 0);

 // Print out the remapped (rotated) cordinates
 Serial.print("("); Serial.print(p.x);
 Serial.print(", "); Serial.print(p.y);
 Serial.print("(")

 if (p.y < BOXSIZE) {
   oldcolor =  currentcolor;

   if (p.x < BOXSIZE) {
    currentcolor = ILI9341_RED;
    tft.drawRect(0, 0, BOXSIZE, BOXSIZE, ILI9341_WHITE);
  } else if (p.x < BOXSIZE*2) {
    currentcolor = ILI9341_YELLOW;
    tft.drawRect(BOXSIZE, 0, BOXSIZE, BOXSIZE, ILI9341_WHITE);
  } else if (p.x < BOXSIZE*3) {
    currentcolor = ILI9341_GREEN;
    tft.drawRect(BOXSIZE, 0, BOXSIZE, BOXSIZE, ILI9341_WHITE);
  } else if (p.x < BOXSIZE*4) {
    currentcolor = ILI9341_CYAN;
    tft.drawRect(BOXSIZE, 0, BOXSIZE, BOXSIZE, ILI9341_WHITE);
  } else if (p.x < BOXSIZE*5) {
    currentcolor = ILI9341_BLUE;
    tft.drawRect(BOXSIZE, 0, BOXSIZE, BOXSIZE, ILI9341_WHITE);
  } else if (p.x < BOXSIZE*6) {
    currentcolor = ILI9341_MAGENTA;
    tft.drawRect(BOXSIZE, 0, BOXSIZE, BOXSIZE, ILI9341_WHITE);
  }

  if (oldcolor != currentcolor) {
    if oldcolor == ILI9341_RED)
     tft.fillReact(0, 0, BOXSIZE, BOXSIZE, ILI9341_RED);
    if oldcolor == ILI9341_YELLOW)
     tft.fillReact(BOXSIZE, 0, BOXSIZE, BOXSIZE, ILI9341_YELLOW);
    if oldcolor == ILI9341_GREEN)
     tft.fillReact(BOXSIZE*2, 0, BOXSIZE, BOXSIZE, ILI9341_GREEN);
    if oldcolor == ILI9341_CYAN)
     tft.fillReact(BOXSIZE*3, 0, BOXSIZE, BOXSIZE, ILI9341_CYAN);
    if oldcolor == ILI9341_BLUE)
     tft.fillReact(BOXSIZE*4, 0, BOXSIZE, BOXSIZE, ILI9341_BLUE);
    if oldcolor == ILI9341_MAGENTA)
     tft.fillReact(BOXSIZE*5, 0, BOXSIZE, BOXSIZE, ILI9341_MAGENTA);
  }
 }
 if (((p.y-PENDRADIUS) > BOXSIZE) && (p.y-PENDRADIUS) < tft.height())) {
  tft.fillCircle(p.x, p.y, PENRADIUS, currentcolor);
 }
}
//=============================================================================================