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This commit is contained in:
Alexander Malzkuhn 2025-05-29 12:47:51 +02:00
parent 3ef60fa954
commit d6ec14c4ac
17 changed files with 1 additions and 368 deletions
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1
.gitignore vendored
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.venv
users/
backup/
Archiv/

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__pycache__/zeiterfassung.cpython-38.pyc
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lib/settings.json
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{
"admin_user": "admin",
"admin_password": "8c6976e5b5410415bde908bd4dee15dfb167a9c873fc4bb8a81f6f2ab448a918",
"port": "8090",
"secret": "ftgzuhjikg,mt5jn46uzer8sfi9okrmtzjhndfierko5zltjhdgise",
"times_on_touchscreen": true,
"photos_on_touchscreen": true,
"touchscreen": true,
"picure_height": 200,
"button_height": 300,
"user_notes": true,
"holidays": {}
}

23
playgound.py
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import json
import urllib.request
from nicegui import ui, app
import segno
@app.get("/data")
async def deliver_data():
with open("settings.json") as json_file:
data = json.load(json_file)
return data
string = ""
for i in range(1000):
string += str(i)
qr_code = segno.make_qr(string).svg_data_uri()
#qr_code.save("qr_code.png", scale=5, border=0)
ui.image(qr_code)
ui.run(language="de-DE", port=9000)

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qr_scanner.py
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#!/usr/bin/env python3
import base64
import signal
import time
import argparse
import requests
import cv2
import numpy as np
from fastapi import Response
from playsound3 import playsound
from definitions import app_title, app_version
from nicegui import Client, app, core, run, ui
class Commandline_Header:
message_string = f"{app_title} {app_version}"
underline = ""
for i in range(len(message_string)):
underline += "-"
print(message_string)
print(underline)
def visual_interface(port=9000):
# In case you don't have a webcam, this will provide a black placeholder image.
black_1px = 'iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAA1JREFUGFdjYGBg+A8AAQQBAHAgZQsAAAAASUVORK5CYII='
placeholder = Response(content=base64.b64decode(black_1px.encode('ascii')), media_type='image/png')
global convert
def convert(frame: np.ndarray) -> bytes:
"""Converts a frame from OpenCV to a JPEG image.
This is a free function (not in a class or inner-function),
to allow run.cpu_bound to pickle it and send it to a separate process.
"""
_, imencode_image = cv2.imencode('.jpg', frame)
return imencode_image.tobytes()
global setup
def setup() -> None:
url_string = ""
for i in list(app.urls):
url_string += f"{i}, "
url_string = url_string[0:-2]
print("Weboberfläche erreichbar unter: " + url_string)
# OpenCV is used to access the webcam.
video_capture = cv2.VideoCapture(0)
detector = cv2.QRCodeDetector()
blocker = False
blockset = 0
@app.get('/video/frame')
# Thanks to FastAPI's `app.get` it is easy to create a web route which always provides the latest image from OpenCV.
async def grab_video_frame() -> Response:
nonlocal blocker
if time.time() - blockset > 5:
blocker = False
if not video_capture.isOpened():
return placeholder
# The `video_capture.read` call is a blocking function.
# So we run it in a separate thread (default executor) to avoid blocking the event loop.
_, frame = await run.io_bound(video_capture.read)
if frame is None:
return placeholder
# `convert` is a CPU-intensive function, so we run it in a separate process to avoid blocking the event loop and GIL.
jpeg = await run.cpu_bound(convert, frame)
# QR-Handling
def function_call():
r = requests.get(str(a))
print(r.content())
print("Inside Function_call")
#b = webbrowser.open(str(a))
if r.status_code == 200:
print('Erkannt')
if r.json()["stampstatus"]:
playsound('ui-on.mp3')
elif not r.json()["stampstatus"]:
playsound('ui-off.mp3')
else:
playsound('ui-sound.mp3')
nonlocal blocker
nonlocal blockset
blocker = True
blockset = time.time()
if not blocker:
_, img = video_capture.read()
# detect and decode
data, bbox, _ = detector.detectAndDecode(img)
# check if there is a QRCode in the image
if data:
a = data
function_call()
# cv2.imshow("QRCODEscanner", img)
if cv2.waitKey(1) == ord("q"):
function_call()
return Response(content=jpeg, media_type='image/jpeg')
# For non-flickering image updates and automatic bandwidth adaptation an interactive image is much better than `ui.image()`.
video_image = ui.interactive_image().classes('w-full h-full')
# A timer constantly updates the source of the image.
# Because data from same paths is cached by the browser,
# we must force an update by adding the current timestamp to the source.
ui.timer(interval=0.1, callback=lambda: video_image.set_source(f'/video/frame?{time.time()}'))
async def disconnect() -> None:
"""Disconnect all clients from current running server."""
for client_id in Client.instances:
await core.sio.disconnect(client_id)
def handle_sigint(signum, frame) -> None:
# `disconnect` is async, so it must be called from the event loop; we use `ui.timer` to do so.
ui.timer(0.1, disconnect, once=True)
# Delay the default handler to allow the disconnect to complete.
ui.timer(1, lambda: signal.default_int_handler(signum, frame), once=True)
async def cleanup() -> None:
# This prevents ugly stack traces when auto-reloading on code change,
# because otherwise disconnected clients try to reconnect to the newly started server.
await disconnect()
# Release the webcam hardware so it can be used by other applications again.
video_capture.release()
app.on_shutdown(cleanup)
# We also need to disconnect clients when the app is stopped with Ctrl+C,
# because otherwise they will keep requesting images which lead to unfinished subprocesses blocking the shutdown.
signal.signal(signal.SIGINT, handle_sigint)
# All the setup is only done when the server starts. This avoids the webcam being accessed
# by the auto-reload main process (see https://github.com/zauberzeug/nicegui/discussions/2321).
app.on_startup(setup)
ui.run(favicon="favicon.svg", port=port, language='de-DE', show_welcome_message=False)
if __name__ in ("__main__", "__mp_main__"):
parser = argparse.ArgumentParser(description=f'{app_title}-QR-Scanner {app_version}')
parser.add_argument('--webgui', help='Web-GUI starten', action="store_true")
parser.add_argument('-p', help="Port, über den die Weboberfläche erreichbar ist")
args = parser.parse_args()
Commandline_Header()
print("QR-Scanner")
if args.webgui:
try:
port = int(args.p)
except:
port = False
if not port == False:
visual_interface(port)
else:
print("Ungültiger Port")
print("Beende")
quit()

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qr_scanner_example.py
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import cv2
import webbrowser
cap = cv2.VideoCapture(0)
# initialize the cv2 QRCode detector
detector = cv2.QRCodeDetector()
while True:
_, img = cap.read()
# detect and decode
data, bbox, _ = detector.detectAndDecode(img)
# check if there is a QRCode in the image
if data:
a = data
break
cv2.imshow("QRCODEscanner", img)
if cv2.waitKey(1) == ord("q"):
break
b = webbrowser.open(str(a))
cap.release()
cv2.destroyAllWindows()

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settings.json_bak
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{
"admin_user": "admin",
"admin_password": "8d969eef6ecad3c29a3a629280e686cf0c3f5d5a86aff3ca12020c923adc6c92",
"port": "8090",
"secret": "ftgzuhjikg,mt5jn46uzer8sfi9okrmtzjhndfierko5zltjhdgise",
"holidays": {
"2024-05-01": "Tag der Arbeit",
"2024-12-25": "1. Weihnachtsfeiertag",
"2025-01-01": "Neujahr",
"2025-05-01": "Tag der Arbeit"
}
}

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sounds/3beeps.mp3
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sounds/beep.mp3
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sounds/power-on.mp3
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sounds/store_beep.mp3
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sounds/success.mp3
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sounds/ui-off.mp3
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sounds/ui-on.mp3
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sounds/ui-sound.mp3
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test.json
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{
"2024-04-01": {
"0": "0",
"1": "8",
"2": "8",
"3": "8",
"4": "8",
"5": "8",
"6": "0",
"vacation": "30"
},
"2024-04-07": {
"0": "0",
"1": "6",
"2": "6",
"3": "6",
"4": "8",
"5": "6",
"6": "0",
"vacation": "28"
}
}

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webcam_example.py
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#!/usr/bin/env python3
import base64
import signal
import time
import webbrowser
import cv2
import numpy as np
from fastapi import Response
from nicegui import Client, app, core, run, ui
# In case you don't have a webcam, this will provide a black placeholder image.
black_1px = 'iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAA1JREFUGFdjYGBg+A8AAQQBAHAgZQsAAAAASUVORK5CYII='
placeholder = Response(content=base64.b64decode(black_1px.encode('ascii')), media_type='image/png')
def convert(frame: np.ndarray) -> bytes:
"""Converts a frame from OpenCV to a JPEG image.
This is a free function (not in a class or inner-function),
to allow run.cpu_bound to pickle it and send it to a separate process.
"""
_, imencode_image = cv2.imencode('.jpg', frame)
return imencode_image.tobytes()
def setup() -> None:
# OpenCV is used to access the webcam.
video_capture = cv2.VideoCapture(0)
detector = cv2.QRCodeDetector()
blocker = False
blockset = 0
@app.get('/video/frame')
# Thanks to FastAPI's `app.get` it is easy to create a web route which always provides the latest image from OpenCV.
async def grab_video_frame() -> Response:
nonlocal blocker
if time.time() - blockset > 5:
blocker = False
if not video_capture.isOpened():
return placeholder
# The `video_capture.read` call is a blocking function.
# So we run it in a separate thread (default executor) to avoid blocking the event loop.
_, frame = await run.io_bound(video_capture.read)
if frame is None:
return placeholder
# `convert` is a CPU-intensive function, so we run it in a separate process to avoid blocking the event loop and GIL.
jpeg = await run.cpu_bound(convert, frame)
# QR-Handling
def function_call():
b = webbrowser.open(str(a))
print('\a')
nonlocal blocker
nonlocal blockset
blocker = True
blockset = time.time()
if not blocker:
_, img = video_capture.read()
# detect and decode
data, bbox, _ = detector.detectAndDecode(img)
# check if there is a QRCode in the image
if data:
a = data
function_call()
# cv2.imshow("QRCODEscanner", img)
if cv2.waitKey(1) == ord("q"):
function_call()
return Response(content=jpeg, media_type='image/jpeg')
# For non-flickering image updates and automatic bandwidth adaptation an interactive image is much better than `ui.image()`.
video_image = ui.interactive_image().classes('w-full h-full')
# A timer constantly updates the source of the image.
# Because data from same paths is cached by the browser,
# we must force an update by adding the current timestamp to the source.
ui.timer(interval=0.1, callback=lambda: video_image.set_source(f'/video/frame?{time.time()}'))
async def disconnect() -> None:
"""Disconnect all clients from current running server."""
for client_id in Client.instances:
await core.sio.disconnect(client_id)
def handle_sigint(signum, frame) -> None:
# `disconnect` is async, so it must be called from the event loop; we use `ui.timer` to do so.
ui.timer(0.1, disconnect, once=True)
# Delay the default handler to allow the disconnect to complete.
ui.timer(1, lambda: signal.default_int_handler(signum, frame), once=True)
async def cleanup() -> None:
# This prevents ugly stack traces when auto-reloading on code change,
# because otherwise disconnected clients try to reconnect to the newly started server.
await disconnect()
# Release the webcam hardware so it can be used by other applications again.
video_capture.release()
app.on_shutdown(cleanup)
# We also need to disconnect clients when the app is stopped with Ctrl+C,
# because otherwise they will keep requesting images which lead to unfinished subprocesses blocking the shutdown.
signal.signal(signal.SIGINT, handle_sigint)
# All the setup is only done when the server starts. This avoids the webcam being accessed
# by the auto-reload main process (see https://github.com/zauberzeug/nicegui/discussions/2321).
app.on_startup(setup)
ui.run(port=9005)