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A small demo of using pywebview with NiceGUI based on wrapping both Unicorn.Server and webview in processes.
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#!/usr/bin/env python3 | |
import multiprocessing | |
import tempfile | |
from fastapi import FastAPI | |
from uvicorn import Config, Server | |
import webview | |
from nicegui import ui | |
class UvicornServer(multiprocessing.Process): | |
def __init__(self, config: Config): | |
super().__init__() | |
self.server = Server(config=config) | |
self.config = config | |
def stop(self): | |
self.terminate() | |
def run(self, *args, **kwargs): | |
self.server.run() | |
def start_window(pipe_send, url_to_load): | |
def on_closed(): | |
pipe_send.send('closed') | |
win = webview.create_window('Demo', url=url_to_load) | |
win.events.closed += on_closed | |
webview.start(storage_path=tempfile.mkdtemp()) | |
app = FastAPI() | |
@app.get('/') | |
def read_root(): | |
return {'Hello': 'World'} | |
@ui.page('/show') | |
def show(): | |
ui.image('https://picsum.photos/id/377/640/360') | |
ui.run_with(app) | |
if __name__ == '__main__': | |
server_ip = "127.0.0.1" | |
server_port = 8080 | |
conn_recv, conn_send = multiprocessing.Pipe() | |
windowsp = multiprocessing.Process(target=start_window, args=(conn_send, f'http://{server_ip}:{server_port}/show')) | |
windowsp.start() | |
config = Config("main:app", host=server_ip, port=server_port, log_level="debug") | |
instance = UvicornServer(config=config) | |
instance.start() | |
window_status = '' | |
while 'closed' not in window_status: | |
# get a unit of work | |
window_status = conn_recv.recv() | |
# report | |
print(f'got {window_status}', flush=True) | |
instance.stop() | |
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