display_ili9341b.py

#!/usr/bin/env python3
'''
*****************************************
PiFire Display Interface Library
*****************************************

 Description: 
   This library supports using 
 the ILI9341 display with 240Hx320W resolution.
 This module utilizes Luma.LCD to interface 
 this display. This module also utilizes  
 buttons for input. 

*****************************************
'''

'''
 Imported Libraries
'''
import time
import socket
import qrcode
import threading
from luma.core.interface.serial import spi
from luma.lcd.device import ili9341
from PIL import Image, ImageDraw, ImageFont
from common import ReadControl, WriteControl  # Common Library for WebUI and Control Program
from gpiozero import Button

'''
Display class definition
'''
class Display:

	def __init__(self, buttonslevel='HIGH', rotation=0, units='F'):
		# Init Global Variables and Constants
		self.buttonslevel = buttonslevel
		self.rotation = rotation
		self.units = units
		self.displayactive = False
		self.in_data = None
		self.status_data = None
		self.displaytimeout = None 
		self.displaycommand = 'splash'

		# Init Display Device, Input Device, Assets
		self._init_globals()
		self._init_assets() 
		self._init_input()
		self._init_display_device()

	def _init_globals(self):
		# Init constants and variables 
		self.WIDTH = 320
		self.HEIGHT = 240
		self.inc_pulse_color = True 
		self.icon_color = 100
		self.fan_rotation = 0
		self.auger_step = 0

	def _init_display_device(self):
		# Init Device
		self.serial = spi(port=0, device=0, gpio_DC=24, gpio_RST=25, bus_speed_hz=32000000, reset_hold_time=0.2, reset_release_time=0.2)
		self.device = ili9341(self.serial, active_low=False, width=self.WIDTH, height=self.HEIGHT, gpio_LIGHT=5, rotate=self.rotation)

		# Setup & Start Display Loop Thread 
		display_thread = threading.Thread(target=self._display_loop)
		display_thread.start()

	def _init_input(self):
		# Init GPIO for button input, setup callbacks: Uncomment to utilize GPIO input
		self.up = 16 	# UP - GPIO16
		self.down = 20	# DOWN - GPIO20
		self.enter = 21 # ENTER - GPIO21
		self.debounce_ms = 500  # number of milliseconds to debounce input
		self.input_event = None
		self.input_counter = 0

		# ==== Buttons Setup =====
		if self.buttonslevel == 'HIGH':
			# Defines for input buttons level HIGH
			self.BUTTON_INPUT = True
		else:
			# Defines for input buttons level LOW
			self.BUTTON_INPUT = False

		self.up_button = Button(pin=self.up, pull_up=self.BUTTON_INPUT, hold_time=0.25, hold_repeat=True)
		self.down_button = Button(pin=self.down, pull_up=self.BUTTON_INPUT, hold_time=0.25, hold_repeat=True) 
		self.enter_button = Button(pin=self.enter, pull_up=self.BUTTON_INPUT)

		# Init Menu Structures
		self._init_menu()
		
		self.up_button.when_pressed = self._up_callback
		self.down_button.when_pressed = self._down_callback
		self.enter_button.when_pressed = self._enter_callback
		self.up_button.when_held = self._up_callback
		self.down_button.when_held = self._down_callback

	def _init_menu(self):
		self.menuactive = False
		self.menutime = 0
		self.menuitem = ''

		self.menu = {}

		self.menu['inactive'] = {
			# List of options for the 'inactive' menu.  This is the initial menu when smoker is not running.
			'Startup': {
				'displaytext': 'Startup',
				'icon': '\uf04b'  # FontAwesome Play Icon
			},
			'Monitor': {
				'displaytext': 'Monitor',
				'icon': '\uf530'  # FontAwesome Glasses Icon
			},
			'Stop': {
				'displaytext': 'Stop',
				'icon': '\uf04d'  # FontAwesome Stop Icon
			},
			'Network': {
				'displaytext': 'IP QR Code',
				'icon': '\uf1eb'  # FontAwesome Wifi Icon
			}
		}

		self.menu['active'] = {
			# List of options for the 'active' menu.  This is the second level menu of options while running.
			'Shutdown': {
				'displaytext': 'Shutdown',
				'icon': '\uf11e'  # FontAwesome Finish Icon
			},
			'Hold': {
				'displaytext': 'Hold',
				'icon': '\uf76b'  # FontAwesome Temperature Low Icon
			},
			'Smoke': {
				'displaytext': 'Smoke',
				'icon': '\uf0c2'  # FontAwesome Cloud Icon
			},
			'Stop': {
				'displaytext': 'Stop',
				'icon': '\uf04d'  # FontAwesome Stop Icon
			},
			'SmokePlus': {
				'displaytext': 'Toggle Smoke+',
				'icon': '\uf0c2'  # FontAwesome Cloud Icon
			},
			'Network': {
				'displaytext': 'IP QR Code',
				'icon': '\uf1eb'  # FontAwesome Wifi Icon
			}
		}
		self.menu['current'] = {}
		self.menu['current']['mode'] = 'none'  # Current Menu Mode (inactive, active)
		self.menu['current']['option'] = 0  # Current option in current mode

	def _display_loop(self):
		'''
		Main display loop
		'''
		while True:
			self._event_detect()

			if self.displaytimeout:
				if time.time() > self.displaytimeout:
					self.displaytimeout = None

			if self.displaycommand == 'clear':
				self.displayactive = False
				self.displaytimeout = None 
				self.displaycommand = None
				self._display_clear()

			if self.displaycommand == 'splash':
				self._display_splash()
				self.displaytimeout = time.time() + 3
				self.displaycommand = 'clear'
				time.sleep(3) # Hold splash screen for 3 seconds

			if self.displaycommand == 'text': 
				self._display_text()
				self.displaycommand = None
				self.displaytimeout = time.time() + 10 

			if self.displaycommand == 'network':
				s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
				s.connect(("8.8.8.8", 80))
				networkip = s.getsockname()[0]
				if (networkip != ''):
					self._display_network(networkip)
					self.displaytimeout = time.time() + 30
					self.displaycommand = None
				else:
					self.display_text("No IP Found")

			if self.menuactive and not self.displaytimeout:
				if time.time() - self.menutime > 5:
					self.menuactive = False
					self.menu['current']['mode'] = 'none'
					self.menu['current']['option'] = 0
					if not self.displayactive:
						self.displaycommand = 'clear'
			elif (not self.displaytimeout) and (self.displayactive):
				if (self.in_data is not None) and (self.status_data is not None):
					self._display_current(self.in_data, self.status_data)

			time.sleep(0.1)

	'''
	============== Input Callbacks ============= 
	'''
	def _enter_callback(self):
		self.input_event='ENTER'

	def _up_callback(self, held=False):
		self.input_event='UP'

	def _down_callback(self, held=False):
		self.input_event='DOWN'

	'''
	============== Graphics / Display / Draw Methods ============= 
	'''
	def _init_assets(self): 
		self._init_background()
		self._init_splash()

	def _init_background(self):
		self.background = Image.open('background.jpg')
		self.background = self.background.resize((self.WIDTH, self.HEIGHT))
	
	def _init_splash(self):
		self.splash = Image.open('color-boot-splash.png')
		(self.splash_width, self.splash_height) = self.splash.size
		self.splash_width *= 2
		self.splash_height *= 2
		self.splash = self.splash.resize((self.splash_width, self.splash_height))

	def _rounded_rectangle(self, draw, xy, rad, fill=None):
		x0, y0, x1, y1 = xy
		draw.rectangle([(x0, y0 + rad), (x1, y1 - rad)], fill=fill)
		draw.rectangle([(x0 + rad, y0), (x1 - rad, y1)], fill=fill)
		draw.pieslice([(x0, y0), (x0 + rad * 2, y0 + rad * 2)], 180, 270, fill=fill)
		draw.pieslice([(x1 - rad * 2, y1 - rad * 2), (x1, y1)], 0, 90, fill=fill)
		draw.pieslice([(x0, y1 - rad * 2), (x0 + rad * 2, y1)], 90, 180, fill=fill)
		draw.pieslice([(x1 - rad * 2, y0), (x1, y0 + rad * 2)], 270, 360, fill=fill)
		return (draw)

	def _create_icon(self, charid, size, color):
		# Get font and character size 
		font = ImageFont.truetype("FA-Free-Solid.otf", size)
		# Create canvas
		iconcanvas = Image.new('RGBa', font.getsize(charid))
		# Create drawing object
		draw = ImageDraw.Draw(iconcanvas)
		draw.text((0, 0), charid, font=font, fill=color)
		iconcanvas = iconcanvas.crop(iconcanvas.getbbox())
		return(iconcanvas)	

	def _paste_icon(self, icon, canvas, position, rotation, bgcolor):
		# First fill the background 
		bgfill = ImageDraw.Draw(canvas)
		# Rotate the icon
		icon = icon.rotate(rotation)
		(icon_width, icon_height) = icon.size
		#bgfill.rectangle([(position[0], position[1]), (position[0] + icon_width, position[1] + icon_height)], fill=bgcolor)
		# Set the position & paste the icon onto the canvas
		canvas.paste(icon, position, icon)
		return(canvas)

	def _draw_fan_icon(self, canvas):
		# F = Fan (Upper Left)
		icon_char = '\uf863'
		icon_color = (0, self.icon_color, 255)

		drawing = ImageDraw.Draw(canvas)
		# Draw Rounded Rectangle Border
		drawing = self._rounded_rectangle(drawing, (
			self.WIDTH // 8 - 22, self.HEIGHT // 6 - 22, self.WIDTH // 8 + 22, self.HEIGHT // 6 + 22), 5,
										icon_color)
		# Fill Rectangle with Black
		drawing = self._rounded_rectangle(drawing, (
			self.WIDTH // 8 - 20, self.HEIGHT // 6 - 20, self.WIDTH // 8 + 20, self.HEIGHT // 6 + 20), 5,
										(0, 0, 0))
		# Create Icon Image
		icon = self._create_icon(icon_char, 36, icon_color)
		position = (self.WIDTH // 8 - 18, self.HEIGHT // 6 - 18)
		canvas = self._paste_icon(icon, canvas, position, self.fan_rotation, (0,0,0))
		return(canvas)

	def _draw_auger_icon(self, canvas):
		# A = Auger (Center Left)
		icon_char = '\uf101'
		icon_color_tuple = (0, self.icon_color, 0)
		# Create a drawing object
		drawing = ImageDraw.Draw(canvas)
		# Draw Rounded Rectangle Border
		drawing = self._rounded_rectangle(drawing, (
			self.WIDTH // 8 - 22, self.HEIGHT // 2.5 - 22, self.WIDTH // 8 + 22, self.HEIGHT // 2.5 + 22), 5,
										icon_color_tuple)
		# Fill Rectangle with Black
		drawing = self._rounded_rectangle(drawing, (
			self.WIDTH // 8 - 20, self.HEIGHT // 2.5 - 20, self.WIDTH // 8 + 20, self.HEIGHT // 2.5 + 20), 5,
										(0, 0, 0))
		# Create Icon Image
		icon = self._create_icon(icon_char, 36, icon_color_tuple)
		(icon_width, icon_height) = icon.size 
		position = ((self.WIDTH // 8 - 18) + (icon_width // 8) + self.auger_step, (int(self.HEIGHT // 2.5) - 18) + (icon_height // 3))
		canvas = self._paste_icon(icon, canvas, position, 0, (0,0,0))
		return(canvas)

	def _display_clear(self):
		self.device.clear()
		self.device.backlight(False)
		self.device.hide()

	def _display_canvas(self, canvas):
		# Display canvas to screen for ILI9341
		self.device.show()
		self.device.backlight(True)
		self.device.display(canvas)

	def _display_splash(self):
		# Create canvas
		img = Image.new('RGB', (self.WIDTH, self.HEIGHT), color=(0, 0, 0))

		# Set the position & paste the splash image onto the canvas
		position = ((self.WIDTH - self.splash_width) // 2, (self.HEIGHT - self.splash_height) // 2)
		img.paste(self.splash, position)

		self._display_canvas(img)

	def _display_text(self):
		# Create canvas
		img = Image.new('RGB', (self.WIDTH, self.HEIGHT), color=(0, 0, 0))

		# Create drawing object
		draw = ImageDraw.Draw(img)

		font = ImageFont.truetype("impact.ttf", 42)
		(font_width, font_height) = font.getsize(self.displaydata)
		draw.text((self.WIDTH // 2 - font_width // 2, self.HEIGHT // 2 - font_height // 2), self.displaydata, font=font, fill=255)

		self._display_canvas(img)

	def _display_network(self, networkip):
		# Create canvas
		img = Image.new('RGB', (self.WIDTH, self.HEIGHT), color=(255, 255, 255))
		img_qr = qrcode.make('http://' + networkip)
		img_qr_width, img_qr_height = img_qr.size
		img_qr_width *= 2
		img_qr_height *= 2
		w = min(self.WIDTH, self.HEIGHT)
		new_image = img_qr.resize((w, w))
		position = (int((self.WIDTH/2)-(w/2)), 0)
		img.paste(new_image, position)

		self._display_canvas(img)

	def _display_current(self, in_data, status_data):
		if (self.menuactive == False):
			# Create canvas
			img = Image.new('RGB', (self.WIDTH, self.HEIGHT), color=(0, 0, 0))

			# Set the position and paste the background image onto the canvas
			position = (0, 0)
			img.paste(self.background, position)

			# Create drawing object
			draw = ImageDraw.Draw(img)

			# Grill Temp Circle
			draw.ellipse((80, 10, 240, 170), fill=(50, 50, 50))  # Grey Background Circle
			if in_data['GrillTemp'] < 0:
				endpoint = 0
			elif self.units == 'F':
				endpoint = ((360 * in_data['GrillTemp']) // 600) + 90
			else:
				endpoint = ((360 * in_data['GrillTemp']) // 300) + 90
			draw.pieslice((80, 10, 240, 170), start=90, end=endpoint, fill=(200, 0, 0))  # Red Arc for Temperature
			if (in_data['GrillSetPoint'] > 0) and (status_data['mode'] == 'Hold'):
				if self.units == 'F':
					setpoint = ((360 * in_data['GrillSetPoint']) // 600) + 90
				else:
					setpoint = ((360 * in_data['GrillSetPoint']) // 300) + 90
				draw.pieslice((80, 10, 240, 170), start=setpoint - 2, end=setpoint + 2,
							  fill=(0, 200, 255))  # Blue Arc for SetPoint
			if (in_data['GrillNotifyPoint'] > 0) and (status_data['notify_req']['grill']):
				if self.units == 'F':
					setpoint = ((360 * in_data['GrillNotifyPoint']) // 600) + 90
				else:
					setpoint = ((360 * in_data['GrillNotifyPoint']) // 300) + 90
				draw.pieslice((80, 10, 240, 170), start=setpoint - 2, end=setpoint + 2,
							  fill=(255, 255, 0))  # Yellow Arc for Notify Point

			draw.ellipse((90, 20, 230, 160), fill=(0, 0, 0))  # Black Circle for Center


			# Grill Temp Label
			font = ImageFont.truetype("trebuc.ttf", 16)
			text = "Grill"
			(font_width, font_height) = font.getsize(text)
			draw.text((self.WIDTH // 2 - font_width // 2, 20), text, font=font, fill=(255, 255, 255))

			# Grill Set Point (Small Centered Top)
			if (in_data['GrillSetPoint'] > 0) and (status_data['mode'] == 'Hold'):
				font = ImageFont.truetype("trebuc.ttf", 16)
				text = ">" + str(in_data['GrillSetPoint'])[:5] + "<"
				(font_width, font_height) = font.getsize(text)
				draw.text((self.WIDTH // 2 - font_width // 2, 45 - font_height // 2), text, font=font,
						  fill=(0, 200, 255))

			# Grill Temperature (Large Centered)
			if (self.units == 'F'):
				font = ImageFont.truetype("trebuc.ttf", 80)
				text = str(in_data['GrillTemp'])[:5]
				(font_width, font_height) = font.getsize(text)
				draw.text((self.WIDTH // 2 - font_width // 2, 40), text, font=font, fill=(255, 255, 255))
			else:
				font = ImageFont.truetype("trebuc.ttf", 55)
				text = str(in_data['GrillTemp'])[:5]
				(font_width, font_height) = font.getsize(text)
				draw.text((self.WIDTH // 2 - font_width // 2, 56), text, font=font, fill=(255, 255, 255))

			# Draw Grill Temp Scale Label
			text = "°" + self.units
			font = ImageFont.truetype("trebuc.ttf", 24)
			(font_width, font_height) = font.getsize(text)
			draw.text((self.WIDTH // 2 - font_width // 2, self.HEIGHT // 2 - font_height // 2 + 10), text, font=font,
					  fill=(255, 255, 255))

			# PROBE1 Temp Circle
			draw.ellipse((10, self.HEIGHT // 2 + 10, 110, self.HEIGHT // 2 + 110), fill=(50, 50, 50))
			if in_data['Probe1Temp'] < 0:
				endpoint = 0
			elif self.units == 'F':
				endpoint = ((360 * in_data['Probe1Temp']) // 300) + 90
			else:
				endpoint = ((360 * in_data['Probe1Temp']) // 150) + 90
			draw.pieslice((10, self.HEIGHT // 2 + 10, 110, self.HEIGHT // 2 + 110), start=90, end=endpoint,
						  fill=(3, 161, 252))
			if (in_data['Probe1SetPoint'] > 0):
				if self.units == 'F':
					setpoint = ((360 * in_data['Probe1SetPoint']) // 300) + 90
				else:
					setpoint = ((360 * in_data['Probe1SetPoint']) // 150) + 90
				draw.pieslice((10, self.HEIGHT // 2 + 10, 110, self.HEIGHT // 2 + 110), start=setpoint - 2,
							  end=setpoint + 2, fill=(255, 255, 0))  # Yellow Arc for SetPoint
			draw.ellipse((20, self.HEIGHT // 2 + 20, 100, self.HEIGHT // 2 + 100), fill=(0, 0, 0))

			# PROBE1 Temp Label
			font = ImageFont.truetype("trebuc.ttf", 16)
			text = "Probe-1"
			(font_width, font_height) = font.getsize(text)
			draw.text((60 - font_width // 2, self.HEIGHT // 2 + 40 - font_height // 2), text, font=font,
					  fill=(255, 255, 255))

			# PROBE1 Temperature (Large Centered)
			if (self.units == 'F'):
				font = ImageFont.truetype("trebuc.ttf", 36)
			else:
				font = ImageFont.truetype("trebuc.ttf", 30)
			text = str(in_data['Probe1Temp'])[:5]
			(font_width, font_height) = font.getsize(text)
			draw.text((60 - font_width // 2, self.HEIGHT // 2 + 60 - font_height // 2), text, font=font,
					  fill=(255, 255, 255))

			# PROBE1 Set Point (Small Centered Bottom)
			if (in_data['Probe1SetPoint'] > 0):
				font = ImageFont.truetype("trebuc.ttf", 16)
				text = ">" + str(in_data['Probe1SetPoint'])[:5] + "<"
				(font_width, font_height) = font.getsize(text)
				draw.text((60 - font_width // 2, self.HEIGHT // 2 + 85 - font_height // 2), text, font=font,
						  fill=(0, 200, 255))

			# PROBE2 Temp Circle
			draw.ellipse((self.WIDTH - 110, self.HEIGHT // 2 + 10, self.WIDTH - 10, self.HEIGHT // 2 + 110),
						 fill=(50, 50, 50))
			if in_data['Probe2Temp'] < 0:
				endpoint = 0
			elif self.units == 'F':
				endpoint = ((360 * in_data['Probe2Temp']) // 300) + 90
			else:
				endpoint = ((360 * in_data['Probe2Temp']) // 150) + 90
			draw.pieslice((self.WIDTH - 110, self.HEIGHT // 2 + 10, self.WIDTH - 10, self.HEIGHT // 2 + 110), start=90,
						  end=endpoint, fill=(3, 161, 252))
			if (in_data['Probe2SetPoint'] > 0):
				if self.units == 'F':
					setpoint = ((360 * in_data['Probe2SetPoint']) // 300) + 90
				else:
					setpoint = ((360 * in_data['Probe2SetPoint']) // 150) + 90
				draw.pieslice((self.WIDTH - 110, self.HEIGHT // 2 + 10, self.WIDTH - 10, self.HEIGHT // 2 + 110),
							  start=setpoint - 2, end=setpoint + 2, fill=(255, 255, 0))  # Yellow Arc for SetPoint
			draw.ellipse((self.WIDTH - 100, self.HEIGHT // 2 + 20, self.WIDTH - 20, self.HEIGHT // 2 + 100),
						 fill=(0, 0, 0))

			# PROBE2 Temp Label
			font = ImageFont.truetype("trebuc.ttf", 16)
			text = "Probe-2"
			(font_width, font_height) = font.getsize(text)
			draw.text((self.WIDTH - 60 - font_width // 2, self.HEIGHT // 2 + 40 - font_height // 2), text, font=font,
					  fill=(255, 255, 255))

			# PROBE2 Temperature (Large Centered)
			if (self.units == 'F'):
				font = ImageFont.truetype("trebuc.ttf", 36)
			else:
				font = ImageFont.truetype("trebuc.ttf", 30)
			text = str(in_data['Probe2Temp'])[:5]
			(font_width, font_height) = font.getsize(text)
			draw.text((self.WIDTH - 60 - font_width // 2, self.HEIGHT // 2 + 60 - font_height // 2), text, font=font,
					  fill=(255, 255, 255))

			# PROBE2 Set Point (Small Centered Bottom)
			if (in_data['Probe2SetPoint'] > 0):
				font = ImageFont.truetype("trebuc.ttf", 16)
				text = ">" + str(in_data['Probe2SetPoint'])[:5] + "<"
				(font_width, font_height) = font.getsize(text)
				draw.text((self.WIDTH - 60 - font_width // 2, self.HEIGHT // 2 + 85 - font_height // 2), text,
						  font=font, fill=(0, 200, 255))

			# Active Outputs
			''' Test of pulsing color '''
			if self.inc_pulse_color == True: 
				if self.icon_color < 200:
					self.icon_color += 20
				else: 
					self.inc_pulse_color = False 
					self.icon_color -= 20 
			else:
				if self.icon_color < 100:
					self.inc_pulse_color = True
					self.icon_color += 20 
				else: 
					self.icon_color -= 20 

			font = ImageFont.truetype("FA-Free-Solid.otf", 36)
			if (status_data['outpins']['fan'] == 0):
				# F = Fan (Upper Left), 40x40, origin 10,10
				self._draw_fan_icon(img)
				self.fan_rotation += 30 
				if self.fan_rotation >= 360: 
					self.fan_rotation = 0
			if (status_data['outpins']['igniter'] == 0):
				# I = Igniter(Center Right)
				text = '\uf46a'
				(font_width, font_height) = font.getsize(text)
				draw = self._rounded_rectangle(draw, (
					7 * (self.WIDTH // 8) - 22, self.HEIGHT // 2.5 - 22, 7 * (self.WIDTH // 8) + 22,
					self.HEIGHT // 2.5 + 22), 5, (255, self.icon_color, 0))
				draw = self._rounded_rectangle(draw, (
					7 * (self.WIDTH // 8) - 20, self.HEIGHT // 2.5 - 20, 7 * (self.WIDTH // 8) + 20,
					self.HEIGHT // 2.5 + 20), 5, (0, 0, 0))
				draw.text((7 * (self.WIDTH // 8) - font_width // 2, self.HEIGHT // 2.5 - font_height // 2), text,
						  font=font, fill=(255, self.icon_color, 0))
			if (status_data['outpins']['auger'] == 0):
				# A = Auger (Center Left)
				self._draw_auger_icon(img)
				self.auger_step += 1 
				if self.auger_step >= 3: 
					self.auger_step = 0

			# Notification Indicator (Right)
			show_notify_indicator = False
			for item in status_data['notify_req']:
				if status_data['notify_req'][item] == True:
					show_notify_indicator = True
			if (show_notify_indicator == True):
				font = ImageFont.truetype("FA-Free-Solid.otf", 36)
				text = '\uf0f3'
				(font_width, font_height) = font.getsize(text)
				draw = self._rounded_rectangle(draw, (
					7 * (self.WIDTH // 8) - 22, self.HEIGHT // 6 - 22, 7 * (self.WIDTH // 8) + 22,
					self.HEIGHT // 6 + 22),
											  5, (255, 255, 0))
				draw = self._rounded_rectangle(draw, (
					7 * (self.WIDTH // 8) - 20, self.HEIGHT // 6 - 20, 7 * (self.WIDTH // 8) + 20,
					self.HEIGHT // 6 + 20),
											  5, (0, 0, 0))
				draw.text((7 * (self.WIDTH // 8) - font_width // 2 + 1, self.HEIGHT // 6 - font_height // 2), text,
						  font=font, fill=(255, 255, 0))

			# Smoke Plus Inidicator
			if (status_data['s_plus'] == True) and (
					(status_data['mode'] == 'Smoke') or (status_data['mode'] == 'Hold')):
				draw = self._rounded_rectangle(draw, (
					7 * (self.WIDTH // 8) - 22, self.HEIGHT // 2.5 - 22, 7 * (self.WIDTH // 8) + 22,
					self.HEIGHT // 2.5 + 22), 5, (150, 0, 255))
				draw = self._rounded_rectangle(draw, (
					7 * (self.WIDTH // 8) - 20, self.HEIGHT // 2.5 - 20, 7 * (self.WIDTH // 8) + 20,
					self.HEIGHT // 2.5 + 20), 5, (0, 0, 0))
				font = ImageFont.truetype("FA-Free-Solid.otf", 32)
				text = '\uf0c2'  # FontAwesome Icon for Cloud (Smoke)
				(font_width, font_height) = font.getsize(text)
				draw.text((7 * (self.WIDTH // 8) - font_width // 2, self.HEIGHT // 2.5 - font_height // 2), text,
						  font=font, fill=(100, 0, 255))
				font = ImageFont.truetype("FA-Free-Solid.otf", 24)
				text = '\uf067'  # FontAwesome Icon for PLUS
				(font_width, font_height) = font.getsize(text)
				draw.text((7 * (self.WIDTH // 8) - font_width // 2, self.HEIGHT // 2.5 - font_height // 2 + 3), text,
						  font=font, fill=(0, 0, 0))

			# Grill Hopper Level (Lower Center)
			font = ImageFont.truetype("trebuc.ttf", 16)
			text = "Hopper:" + str(status_data['hopper_level']) + "%"
			(font_width, font_height) = font.getsize(text)
			if (status_data['hopper_level'] > 70):
				hopper_color = (0, 255, 0)
			elif (status_data['hopper_level'] > 30):
				hopper_color = (255, 150, 0)
			else:
				hopper_color = (255, 0, 0)
			draw = self._rounded_rectangle(draw, (
				self.WIDTH // 2 - font_width // 2 - 7, 156 - font_height // 2, self.WIDTH // 2 + font_width // 2 + 7,
				166 + font_height // 2), 5, hopper_color)
			draw = self._rounded_rectangle(draw, (
				self.WIDTH // 2 - font_width // 2 - 5, 158 - font_height // 2, self.WIDTH // 2 + font_width // 2 + 5,
				164 + font_height // 2), 5, (0, 0, 0))
			draw.text((self.WIDTH // 2 - font_width // 2, 160 - font_height // 2), text, font=font, fill=hopper_color)

			# Current Mode (Bottom Center)
			font = ImageFont.truetype("trebuc.ttf", 36)
			text = status_data['mode']  # + ' Mode'
			(font_width, font_height) = font.getsize(text)
			draw = self._rounded_rectangle(draw, (
				self.WIDTH // 2 - font_width // 2 - 7, self.HEIGHT - font_height - 2,
				self.WIDTH // 2 + font_width // 2 + 7,
				self.HEIGHT - 2), 5, (3, 161, 252))
			draw = self._rounded_rectangle(draw, (
				self.WIDTH // 2 - font_width // 2 - 5, self.HEIGHT - font_height, self.WIDTH // 2 + font_width // 2 + 5,
				self.HEIGHT - 4), 5, (255, 255, 255))
			draw.text((self.WIDTH // 2 - font_width // 2, self.HEIGHT - font_height - 6), text, font=font,
					  fill=(0, 0, 0))

			self._display_canvas(img)

	'''
	 ====================== Input & Menu Code ========================
	'''
	def _event_detect(self):
		'''
		Called to detect input events from buttons, encoder, touch, etc. 
		'''
		command = self.input_event  # Save to variable to prevent spurious changes 
		if command:
			self.displaytimeout = None  # If something is being displayed i.e. text, network, splash then override this

			if command not in ['UP', 'DOWN', 'ENTER']:
				return

			self.displaycommand = None
			self.displaydata = None 
			self.input_event=None
			self.menuactive = True
			self.menutime = time.time()
			self._menu_display(command)
			self.input_counter = 0

	def _menu_display(self, action):
		# If menu is not currently being displayed, check mode and draw menu
		if (self.menu['current']['mode'] == 'none'):
			control = ReadControl()
			if (control['mode'] == 'Stop' or control['mode'] == 'Error' or control[
				'mode'] == 'Monitor'):  # If in an inactive mode
				self.menu['current']['mode'] = 'inactive'
			else:  # Use the active menu
				self.menu['current']['mode'] = 'active'
			self.menu['current']['option'] = 0  # Set the menu option to the very first item in the list
		# If selecting the 'grill_hold_value', take action based on button press was
		elif (self.menu['current']['mode'] == 'grill_hold_value'):
			if (self.units == 'F'):
				stepValue = 5  # change in temp each time button pressed
				minTemp = 120  # minimum temperature set for hold
				maxTemp = 500  # maximum temperature set for hold
			else:
				stepValue = 2  # change in temp each time button pressed
				minTemp = 50  # minimum temperature set for hold
				maxTemp = 260  # maximum temperature set for hold
			
			# Speed up step count if input is faster
			if self.input_counter < 3:
				pass
			elif self.input_counter < 7: 
				stepValue *= 4
			else:
				stepValue *= 6 

			if (action == 'DOWN'):
				self.menu['current']['option'] -= stepValue  # Step down by stepValue degrees
				if (self.menu['current']['option'] <= minTemp):
					self.menu['current']['option'] = maxTemp  # Roll over to maxTemp if you go less than 120.
			elif (action == 'UP'):
				self.menu['current']['option'] += stepValue  # Step up by stepValue degrees
				if (self.menu['current']['option'] > maxTemp):
					self.menu['current']['option'] = minTemp  # Roll over to minTemp if you go greater than 500.
			elif (action == 'ENTER'):
				control = ReadControl()
				control['setpoints']['grill'] = self.menu['current']['option']
				control['updated'] = True
				control['mode'] = 'Hold'
				WriteControl(control)
				self.menu['current']['mode'] = 'none'
				self.menu['current']['option'] = 0
				self.menuactive = False
				self.menutime = 0
		# If selecting either active menu items or inactive menu items, take action based on what the button press was
		else:
			if (action == 'DOWN'):
				self.menu['current']['option'] -= 1
				if (self.menu['current']['option'] < 0):  # Check to make sure we haven't gone past 0
					self.menu['current']['option'] = len(self.menu[self.menu['current']['mode']]) - 1
				tempvalue = self.menu['current']['option']
				tempmode = self.menu['current']['mode']
				index = 0
				selected = 'undefined'
				for item in self.menu[tempmode]:
					if (index == tempvalue):
						selected = item
						break
					index += 1
			elif (action == 'UP'):
				self.menu['current']['option'] += 1
				if (self.menu['current']['option'] == len(self.menu[self.menu['current'][
					'mode']])):  # Check to make sure we haven't gone past the end of the menu
					self.menu['current']['option'] = 0
				tempvalue = self.menu['current']['option']
				tempmode = self.menu['current']['mode']
				index = 0
				selected = 'undefined'
				for item in self.menu[tempmode]:
					if (index == tempvalue):
						selected = item
						break
					index += 1
			elif (action == 'ENTER'):
				index = 0
				selected = 'undefined'
				for item in self.menu[self.menu['current']['mode']]:
					if (index == self.menu['current']['option']):
						selected = item
						break
					index += 1
				# Inactive Mode Items
				if (selected == 'Startup'):
					self.displayactive = True
					self.menu['current']['mode'] = 'none'
					self.menu['current']['option'] = 0
					self.menuactive = False
					self.menutime = 0
					control = ReadControl()
					control['updated'] = True
					control['mode'] = 'Startup'
					WriteControl(control)
				elif (selected == 'Monitor'):
					self.displayactive = True
					self.menu['current']['mode'] = 'none'
					self.menu['current']['option'] = 0
					self.menuactive = False
					self.menutime = 0
					control = ReadControl()
					control['updated'] = True
					control['mode'] = 'Monitor'
					WriteControl(control)
				elif (selected == 'Stop'):
					self.menu['current']['mode'] = 'none'
					self.menu['current']['option'] = 0
					self.menuactive = False
					self.menutime = 0
					self.clear_display()
					control = ReadControl()
					control['updated'] = True
					control['mode'] = 'Stop'
					WriteControl(control)
				# Active Mode
				elif (selected == 'Shutdown'):
					self.displayactive = True
					self.menu['current']['mode'] = 'none'
					self.menu['current']['option'] = 0
					self.menuactive = False
					self.menutime = 0
					control = ReadControl()
					control['updated'] = True
					control['mode'] = 'Shutdown'
					WriteControl(control)
				elif (selected == 'Hold'):
					self.displayactive = True
					self.menu['current']['mode'] = 'grill_hold_value'
					if self.in_data['GrillSetPoint'] == 0:
						if (self.units == 'F'):
							self.menu['current']['option'] = 200  # start at 200 for F
						else:
							self.menu['current']['option'] = 100  # start at 100 for C
					else:
						self.menu['current']['option'] = self.in_data['GrillSetPoint']
				elif (selected == 'Smoke'):
					self.displayactive = True
					self.menu['current']['mode'] = 'none'
					self.menu['current']['option'] = 0
					self.menuactive = False
					self.menutime = 0
					control = ReadControl()
					control['updated'] = True
					control['mode'] = 'Smoke'
					WriteControl(control)
				elif (selected == 'SmokePlus'):
					self.menu['current']['mode'] = 'none'
					self.menu['current']['option'] = 0
					self.menuactive = False
					self.menutime = 0
					control = ReadControl()
					if (control['s_plus'] == True):
						control['s_plus'] = False
					else:
						control['s_plus'] = True
					WriteControl(control)
				elif (selected == 'Network'):
					self.display_network()

		# Create canvas
		img = Image.new('RGB', (self.WIDTH, self.HEIGHT), color=(0, 0, 0))
		# Set the position & paste background image onto canvas 
		position = (0, 0)
		img.paste(self.background, position)
		# Create drawing object
		draw = ImageDraw.Draw(img)

		if (self.menu['current']['mode'] == 'grill_hold_value'):
			# Grill Temperature (Large Centered)
			font = ImageFont.truetype("trebuc.ttf", 120)
			text = str(self.menu['current']['option'])
			(font_width, font_height) = font.getsize(text)
			draw.text((self.WIDTH // 2 - font_width // 2, self.HEIGHT // 3 - font_height // 2), text, font=font,
					  fill=(255, 255, 255))

			# Current Mode (Bottom Center)
			font = ImageFont.truetype("trebuc.ttf", 36)
			text = "Grill Set Point"
			(font_width, font_height) = font.getsize(text)
			# Draw Black Rectangle
			draw.rectangle([(0, (self.HEIGHT // 8) * 6), (self.WIDTH, self.HEIGHT)], fill=(0, 0, 0))
			# Draw White Line/Rectangle
			draw.rectangle([(0, (self.HEIGHT // 8) * 6), (self.WIDTH, ((self.HEIGHT // 8) * 6) + 2)],
						   fill=(255, 255, 255))
			# Draw Text
			draw.text((self.WIDTH // 2 - font_width // 2, (self.HEIGHT // 8) * 6.25), text, font=font,
					  fill=(255, 255, 255))

		elif (self.menu['current']['mode'] != 'none'):
			# Menu Option (Large Top Center)
			index = 0
			selected = 'undefined'
			for item in self.menu[self.menu['current']['mode']]:
				if (index == self.menu['current']['option']):
					selected = item
					break
				index += 1
			font = ImageFont.truetype("FA-Free-Solid.otf", 120)
			text = self.menu[self.menu['current']['mode']][selected]['icon']
			(font_width, font_height) = font.getsize(text)
			draw.text((self.WIDTH // 2 - font_width // 2, self.HEIGHT // 2.5 - font_height // 2), text, font=font,
					  fill=(255, 255, 255))
			# Draw a Plus Icon over the top of the Smoke Icon
			if (selected == 'SmokePlus'):
				font = ImageFont.truetype("FA-Free-Solid.otf", 80)
				text = '\uf067'  # FontAwesome Icon for PLUS
				(font_width, font_height) = font.getsize(text)
				draw.text((self.WIDTH // 2 - font_width // 2, self.HEIGHT // 2.5 - font_height // 2), text, font=font,
						  fill=(0, 0, 0))

			# Current Mode (Bottom Center)
			font = ImageFont.truetype("trebuc.ttf", 36)
			text = self.menu[self.menu['current']['mode']][selected]['displaytext']
			(font_width, font_height) = font.getsize(text)
			# Draw Black Rectangle
			draw.rectangle([(0, (self.HEIGHT // 8) * 6), (self.WIDTH, self.HEIGHT)], fill=(0, 0, 0))
			# Draw White Line/Rectangle
			draw.rectangle([(0, (self.HEIGHT // 8) * 6), (self.WIDTH, ((self.HEIGHT // 8) * 6) + 2)],
						   fill=(255, 255, 255))
			# Draw Text
			draw.text((self.WIDTH // 2 - font_width // 2, (self.HEIGHT // 8) * 6.25), text, font=font,
					  fill=(255, 255, 255))

		# Change color of Arrow for Up / Down when adjusting temperature
		up_color = (255, 255, 255)
		down_color = (255, 255, 255)

		if action == 'UP': 
			up_color = (255, 255, 0)
		elif action == 'DOWN':
			down_color = (255, 255, 0)

		# Up / Down Arrows (Middle Right)
		font = ImageFont.truetype("FA-Free-Solid.otf", 80)
		text = '\uf0de'  # FontAwesome Icon Sort (Up Arrow)
		(font_width, font_height) = font.getsize(text)
		draw.text(((self.WIDTH - (font_width // 2) ** 1.3), (self.HEIGHT // 2.5 - font_height // 2)), text,
					font=font, fill=up_color)

		text = '\uf0dd'  # FontAwesome Icon Sort (Down Arrow)
		(font_width, font_height) = font.getsize(text)
		draw.text(((self.WIDTH - (font_width // 2) ** 1.3), (self.HEIGHT // 2.4 - font_height // 2)), text,
					font=font, fill=down_color)
		
		self._display_canvas(img)
		time.sleep(0.05)

		# Up / Down Arrows (Middle Right)
		font = ImageFont.truetype("FA-Free-Solid.otf", 80)
		text = '\uf0de'  # FontAwesome Icon Sort (Up Arrow)
		(font_width, font_height) = font.getsize(text)
		draw.text(((self.WIDTH - (font_width // 2) ** 1.3), (self.HEIGHT // 2.5 - font_height // 2)), text,
					font=font, fill=(255, 255, 255))

		text = '\uf0dd'  # FontAwesome Icon Sort (Down Arrow)
		(font_width, font_height) = font.getsize(text)
		draw.text(((self.WIDTH - (font_width // 2) ** 1.3), (self.HEIGHT // 2.4 - font_height // 2)), text,
		font=font, fill=(255, 255, 255))

		self._display_canvas(img)

	'''
	================ Externally Available Methods ================
	'''

	def display_status(self, in_data, status_data):
		'''
		- Updates the current data for the display loop, if in a work mode 
		'''
		self.units = status_data['units']
		self.displayactive = True
		self.in_data = in_data 
		self.status_data = status_data 

	def display_splash(self):
		''' 
		- Calls Splash Screen 
		'''
		self.displaycommand = 'splash'

	def clear_display(self):
		''' 
		- Clear display and turn off backlight 
		'''
		self.displaycommand = 'clear'

	def display_text(self, text):
		''' 
		- Display some text 
		'''
		self.displaycommand = 'text'
		self.displaydata = text

	def display_network(self):
		''' 
		- Display Network IP QR Code 
		'''
		self.displaycommand = 'network'