micropython-micro-gui/gui/demos/bitmap.py

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1.5 KiB
Python
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2022-05-17 15:41:54 +00:00
# bitmap.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 uasyncio as asyncio
import hardware_setup # Create a display instance
from gui.core.ugui import Screen, ssd
from gui.widgets import Label, Button, CloseButton, BMG
# Create buffer for bitmapped graphic before fragmentation sets in
scale = 1
qr_ht = 100
qr_wd = 100
qr_buf = BMG.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):
super().__init__()
wri = CWriter(ssd, arial10, GREEN, BLACK)
col = 2
row = 2
Label(wri, row, col, "Bitmap Demo.")
row = 50
self.graphic = BMG(wri, row, col, qr_ht, qr_wd, scale, fgcolor=WHITE, bgcolor=BLACK, buf=qr_buf)
#Button(wri, row, col, text="URL", callback=my_callback, args=(graphic, qr))
asyncio.create_task(self.animate())
CloseButton(wri) # Quit the application
async def animate(self):
while True:
for n in range(13):
fn = f"/moon/m{n}.c"
#print(fn)
await asyncio.sleep_ms(200)
self.graphic.value(fn)
def test():
print("Bitmap demo.")
Screen.change(BaseScreen) # A class is passed here, not an instance.
test()