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