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seedsigner/views/view.py
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# External Dependencies
from PIL import Image
from PIL import ImageDraw
from PIL import ImageFont
import ST7789
import spidev as SPI
from multiprocessing import Queue
### Generic View Class to Instatiate Display
### Static Class variables are used for display
### Designed to be inherited for other view classes, but not required
class View:
WIDTH = 240
HEIGHT = 240
# Define necessart fonts
IMPACT16 = ImageFont.truetype('/usr/share/fonts/truetype/msttcorefonts/Impact.ttf', 16)
IMPACT18 = ImageFont.truetype('/usr/share/fonts/truetype/msttcorefonts/Impact.ttf', 18)
IMPACT20 = ImageFont.truetype('/usr/share/fonts/truetype/msttcorefonts/Impact.ttf', 20)
IMPACT21 = ImageFont.truetype('/usr/share/fonts/truetype/msttcorefonts/Impact.ttf', 21)
IMPACT22 = ImageFont.truetype('/usr/share/fonts/truetype/msttcorefonts/Impact.ttf', 22)
IMPACT23 = ImageFont.truetype('/usr/share/fonts/truetype/msttcorefonts/Impact.ttf', 23)
IMPACT25 = ImageFont.truetype('/usr/share/fonts/truetype/msttcorefonts/Impact.ttf', 25)
IMPACT26 = ImageFont.truetype('/usr/share/fonts/truetype/msttcorefonts/Impact.ttf', 26)
IMPACT35 = ImageFont.truetype('/usr/share/fonts/truetype/msttcorefonts/Impact.ttf', 35)
IMPACT50 = ImageFont.truetype('/usr/share/fonts/truetype/msttcorefonts/Impact.ttf', 50)
COURIERNEW38 = ImageFont.truetype('/usr/share/fonts/truetype/msttcorefonts/courbd.ttf', 38)
COURIERNEW30 = ImageFont.truetype('/usr/share/fonts/truetype/msttcorefonts/courbd.ttf', 30)
RST = 27
DC = 25
BL = 24
controller = None
buttons = None
canvas_width = 0
canvas_height = 0
canvas = None
draw = None
bus = 0
device = 0
disp = None
def __init__(self, controller) -> None:
# Global Singleton
View.controller = controller
View.buttons = View.controller.buttons
View.canvas_width = View.WIDTH
View.canvas_height = View.HEIGHT
View.canvas = Image.new('RGB', (View.canvas_width, View.canvas_height))
View.draw = ImageDraw.Draw(View.canvas)
# 240x240 display with hardware SPI:
View.bus = 0
View.device = 0
View.disp = ST7789.ST7789(SPI.SpiDev(View.bus, View.device),View.RST, View.DC, View.BL)
View.disp.Init()
self.queue = Queue()
def DispShowImage(image = None):
if image == None:
image = View.canvas
View.disp.ShowImage(image, 0, 0)
def draw_modal(self, lines = [], title = "", bottom = "") -> None:
View.draw.rectangle((0, 0, View.canvas_width, View.canvas_height), outline=0, fill=0)
if len(title) > 0:
tw, th = View.draw.textsize(title, font=View.IMPACT22)
View.draw.text(((240 - tw) / 2, 2), title, fill="ORANGE", font=View.IMPACT22)
if len(bottom) > 0:
tw, th = View.draw.textsize(bottom, font=View.IMPACT18)
View.draw.text(((240 - tw) / 2, 210), bottom, fill="ORANGE", font=View.IMPACT18)
if len(lines) == 1:
tw, th = View.draw.textsize(lines[0], font=View.IMPACT26)
View.draw.text(((240 - tw) / 2, 90), lines[0], fill="ORANGE", font=View.IMPACT26)
elif len(lines) == 2:
tw, th = View.draw.textsize(lines[0], font=View.IMPACT22)
View.draw.text(((240 - tw) / 2, 90), lines[0], fill="ORANGE", font=View.IMPACT22)
tw, th = View.draw.textsize(lines[1], font=View.IMPACT22)
View.draw.text(((240 - tw) / 2, 125), lines[1], fill="ORANGE", font=View.IMPACT22)
elif len(lines) == 3:
tw, th = View.draw.textsize(lines[0], font=View.IMPACT26)
View.draw.text(((240 - tw) / 2, 55), lines[0], fill="ORANGE", font=View.IMPACT26)
tw, th = View.draw.textsize(lines[1], font=View.IMPACT22)
View.draw.text(((240 - tw) / 2, 90), lines[1], fill="ORANGE", font=View.IMPACT22)
tw, th = View.draw.textsize(lines[2], font=View.IMPACT22)
View.draw.text(((240 - tw) / 2, 125), lines[2], fill="ORANGE", font=View.IMPACT22)
elif len(lines) == 4:
tw, th = View.draw.textsize(lines[0], font=View.IMPACT22)
View.draw.text(((240 - tw) / 2, 55), lines[0], fill="ORANGE", font=View.IMPACT22)
tw, th = View.draw.textsize(lines[1], font=View.IMPACT22)
View.draw.text(((240 - tw) / 2, 90), lines[1], fill="ORANGE", font=View.IMPACT22)
tw, th = View.draw.textsize(lines[2], font=View.IMPACT22)
View.draw.text(((240 - tw) / 2, 125), lines[2], fill="ORANGE", font=View.IMPACT22)
tw, th = View.draw.textsize(lines[3], font=View.IMPACT22)
View.draw.text(((240 - tw) / 2, 160), lines[3], fill="ORANGE", font=View.IMPACT22)
View.DispShowImage()
return
def draw_prompt_yes_no(self, lines = [], title = "", bottom = "") -> None:
self.draw_prompt_custom("", "Yes ", "No ", lines, title, bottom)
return
def draw_prompt_custom(self, a_txt, b_txt, c_txt, lines = [], title = "", bottom = "") -> None:
View.draw.rectangle((0, 0, View.canvas_width, View.canvas_height), outline=0, fill=0)
if len(title) > 0:
tw, th = View.draw.textsize(title, font=View.IMPACT22)
View.draw.text(((240 - tw) / 2, 2), title, fill="ORANGE", font=View.IMPACT22)
if len(bottom) > 0:
tw, th = View.draw.textsize(bottom, font=View.IMPACT18)
View.draw.text(((240 - tw) / 2, 210), bottom, fill="ORANGE", font=View.IMPACT18)
if len(lines) == 1:
tw, th = View.draw.textsize(lines[0], font=View.IMPACT26)
View.draw.text(((240 - tw) / 2, 90), lines[0], fill="ORANGE", font=View.IMPACT26)
elif len(lines) == 2:
tw, th = View.draw.textsize(lines[0], font=View.IMPACT22)
View.draw.text(((240 - tw) / 2, 90), lines[0], fill="ORANGE", font=View.IMPACT22)
tw, th = View.draw.textsize(lines[1], font=View.IMPACT22)
View.draw.text(((240 - tw) / 2, 125), lines[1], fill="ORANGE", font=View.IMPACT22)
elif len(lines) == 3:
tw, th = View.draw.textsize(lines[0], font=View.IMPACT26)
View.draw.text(((240 - tw) / 2, 20), lines[0], fill="ORANGE", font=View.IMPACT26)
tw, th = View.draw.textsize(lines[1], font=View.IMPACT22)
View.draw.text(((240 - tw) / 2, 90), lines[1], fill="ORANGE", font=View.IMPACT22)
tw, th = View.draw.textsize(lines[2], font=View.IMPACT22)
View.draw.text(((240 - tw) / 2, 125), lines[2], fill="ORANGE", font=View.IMPACT22)
elif len(lines) == 4:
tw, th = View.draw.textsize(lines[0], font=View.IMPACT22)
View.draw.text(((240 - tw) / 2, 20), lines[0], fill="ORANGE", font=View.IMPACT22)
tw, th = View.draw.textsize(lines[1], font=View.IMPACT22)
View.draw.text(((240 - tw) / 2, 90), lines[1], fill="ORANGE", font=View.IMPACT22)
tw, th = View.draw.textsize(lines[2], font=View.IMPACT22)
View.draw.text(((240 - tw) / 2, 125), lines[2], fill="ORANGE", font=View.IMPACT22)
tw, th = View.draw.textsize(lines[3], font=View.IMPACT22)
View.draw.text(((240 - tw) / 2, 160), lines[3], fill="ORANGE", font=View.IMPACT22)
a_x_offset = 240 - View.IMPACT25.getsize(a_txt)[0]
View.draw.text((a_x_offset, 39 + 0), a_txt, fill="ORANGE", font=View.IMPACT25)
b_x_offset = 240 - View.IMPACT25.getsize(b_txt)[0]
View.draw.text((b_x_offset , 39 + 60), b_txt, fill="ORANGE", font=View.IMPACT25)
c_x_offset = 240 - View.IMPACT25.getsize(c_txt)[0]
View.draw.text((c_x_offset , 39 + 120), c_txt, fill="ORANGE", font=View.IMPACT25)
View.DispShowImage()
return
###
### Power Off Screen
###
def display_power_off_screen(self):
View.draw.rectangle((0, 0, View.canvas_width, View.canvas_height), outline=0, fill=0)
line1 = "Powering Down..."
line2 = "Please wait about"
line3 = "30 seconds before"
line4 = "disconnecting power."
tw, th = View.draw.textsize(line1, font=View.IMPACT22)
View.draw.text(((240-tw)/2, 45), line1, fill="ORANGE", font=View.IMPACT22)
tw, th = View.draw.textsize(line2, font=View.IMPACT20)
View.draw.text(((240-tw)/2, 100), line2, fill="ORANGE", font=View.IMPACT20)
tw, th = View.draw.textsize(line3, font=View.IMPACT20)
View.draw.text(((240-tw)/2, 130), line3, fill="ORANGE", font=View.IMPACT20)
tw, th = View.draw.textsize(line4, font=View.IMPACT20)
View.draw.text(((240-tw)/2, 160), line4, fill="ORANGE", font=View.IMPACT20)
View.DispShowImage()
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