kopia lustrzana https://github.com/peterhinch/micropython-micro-gui
51 wiersze
1.5 KiB
Python
51 wiersze
1.5 KiB
Python
# qrcode.py Minimal micro-gui demo.
|
|
|
|
# Released under the MIT License (MIT). See LICENSE.
|
|
# Copyright (c) 2022 Peter Hinch
|
|
|
|
# hardware_setup must be imported before other modules because of RAM use.
|
|
import gc
|
|
import hardware_setup # Create a display instance
|
|
from uQR import QRCode
|
|
from gui.core.ugui import Screen, ssd
|
|
from gui.widgets import Label, Button, CloseButton, QRMap
|
|
# Create buffer for bitmapped graphic before fragmentation sets in
|
|
scale = 3 # Magnification of graphic
|
|
qr_ht = scale * 41
|
|
qr_wd = scale * 41
|
|
qr_buf = QRMap.make_buffer(qr_ht, qr_wd)
|
|
gc.collect()
|
|
from gui.core.writer import CWriter
|
|
import gui.fonts.arial10 as arial10
|
|
from gui.core.colors import *
|
|
|
|
|
|
class BaseScreen(Screen):
|
|
|
|
def __init__(self):
|
|
|
|
def my_callback(button, graphic, qr):
|
|
qr.clear()
|
|
qr.add_data("https://en.wikipedia.org/wiki/QR_code")
|
|
graphic.value(qr.get_matrix())
|
|
|
|
super().__init__()
|
|
wri = CWriter(ssd, arial10, GREEN, BLACK)
|
|
col = 2
|
|
row = 2
|
|
Label(wri, row, col, "QR code Demo.")
|
|
row = 50
|
|
graphic = QRMap(wri, row, col, (qr_ht, qr_wd), scale, fgcolor=BLACK, bgcolor=WHITE, buf=qr_buf)
|
|
qr = QRCode(version=4) # Gives 41x41 matrix
|
|
qr.add_data("uQR rocks!")
|
|
graphic.value(qr.get_matrix())
|
|
col = 160
|
|
Button(wri, row, col, text="URL", callback=my_callback, args=(graphic, qr))
|
|
CloseButton(wri) # Quit the application
|
|
|
|
def test():
|
|
print("QR code demo.")
|
|
Screen.change(BaseScreen) # A class is passed here, not an instance.
|
|
|
|
test()
|