//This example implements a simple sliding On/Off button. The example
// demonstrates drawing and touch operations.
//
//Thanks to Adafruit forums member Asteroid for the original sketch!
//
#include <Adafruit_GFX.h>
#include <SPI.h>
#include <Wire.h>
#include <Adafruit_ILI9341.h>
#include <Adafruit_STMPE610.h>

// This is calibration data for the raw touch data to the screen coordinates
#define TS_MINX 150
#define TS_MINY 130
#define TS_MAXX 3800
#define TS_MAXY 4000

#define STMPE_CS 8
Adafruit_STMPE610 ts = Adafruit_STMPE610(STMPE_CS);
#define TFT_CS 10
#define TFT_DC 9
Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC);

boolean RecordOn = false;

#define FRAME_X 210
#define FRAME_Y 180
#define FRAME_W 100
#define FRAME_H 50

#define REDBUTTON_X FRAME_X
#define REDBUTTON_Y FRAME_Y
#define REDBUTTON_W (FRAME_W/2)
#define REDBUTTON_H FRAME_H

#define GREENBUTTON_X (REDBUTTON_X + REDBUTTON_W)
#define GREENBUTTON_Y FRAME_Y
#define GREENBUTTON_W (FRAME_W/2)
#define GREENBUTTON_H FRAME_H

void drawFrame()
{
  tft.drawRect(FRAME_X, FRAME_Y, FRAME_W, FRAME_H, ILI9341_BLACK);
}

void redBtn()
{ 
  tft.fillRect(REDBUTTON_X, REDBUTTON_Y, REDBUTTON_W, REDBUTTON_H, ILI9341_RED);
  tft.fillRect(GREENBUTTON_X, GREENBUTTON_Y, GREENBUTTON_W, GREENBUTTON_H, ILI9341_BLUE);
  drawFrame();
  tft.setCursor(GREENBUTTON_X + 6 , GREENBUTTON_Y + (GREENBUTTON_H/2));
  tft.setTextColor(ILI9341_WHITE);
  tft.setTextSize(2);
  tft.println("ON");
  RecordOn = false;
}

void greenBtn()
{
  tft.fillRect(GREENBUTTON_X, GREENBUTTON_Y, GREENBUTTON_W, GREENBUTTON_H, ILI9341_GREEN);
  tft.fillRect(REDBUTTON_X, REDBUTTON_Y, REDBUTTON_W, REDBUTTON_H, ILI9341_BLUE);
  drawFrame();
  tft.setCursor(REDBUTTON_X + 6 , REDBUTTON_Y + (REDBUTTON_H/2));
  tft.setTextColor(ILI9341_WHITE);
  tft.setTextSize(2);
  tft.println("OFF");
  RecordOn = true;
}

void setup(void)
{
  Serial.begin(9600);
  tft.begin();
  if (!ts.begin()) { 
    Serial.println("Unable to start touchscreen.");
  } 
  else { 
    Serial.println("Touchscreen started."); 
  }

  tft.fillScreen(ILI9341_BLUE);
  // origin = left,top landscape (USB left upper)
  tft.setRotation(1); 
  redBtn();
}

void loop()
{
  // See if there's any  touch data for us
  if (!ts.bufferEmpty())
  {   
    // Retrieve a point  
    TS_Point p = ts.getPoint(); 
    // Scale using the calibration #'s
    // and rotate coordinate system
    p.x = map(p.x, TS_MINY, TS_MAXY, 0, tft.height());
    p.y = map(p.y, TS_MINX, TS_MAXX, 0, tft.width());
    int y = tft.height() - p.x;
    int x = p.y;

    if (RecordOn)
    {
      if((x > REDBUTTON_X) && (x < (REDBUTTON_X + REDBUTTON_W))) {
        if ((y > REDBUTTON_Y) && (y <= (REDBUTTON_Y + REDBUTTON_H))) {
          Serial.println("Red btn hit"); 
          redBtn();
        }
      }
    }
    else //Record is off (RecordOn == false)
    {
      if((x > GREENBUTTON_X) && (x < (GREENBUTTON_X + GREENBUTTON_W))) {
        if ((y > GREENBUTTON_Y) && (y <= (GREENBUTTON_Y + GREENBUTTON_H))) {
          Serial.println("Green btn hit"); 
          greenBtn();
        }
      }
    }

    Serial.println(RecordOn);
  }  
}