GuiShell/gui.py

import os
import sys
import time
# sys.path.append(os.path.dirname(__file__))
# 必须要把 ui 目录添加到系统路径，否则子目录文件 ui_MainWindows.py 无法 import 资源文件
sys.path.append(os.path.join(os.path.dirname(__file__), 'ui'))
sys.path.append(os.path.join(os.path.dirname(__file__), 'test_u'))
import threading
from PySide2.QtWidgets import QApplication
from PySide2.QtCore import QObject
from PySide2 import QtCore
from main_windows import MainWindow

QtCore.QCoreApplication.setAttribute(QtCore.Qt.AA_EnableHighDpiScaling)
QApplication.setAttribute(QtCore.Qt.AA_UseHighDpiPixmaps, True)
app = None
mainWindows:MainWindow = None
sub_thread = None
exit_flag = False

def run_forever(GUI):
    global app,mainWindows
    QtCore.QCoreApplication.setAttribute(QtCore.Qt.AA_ShareOpenGLContexts)
    app = QApplication(sys.argv)
    mainWindows = MainWindow(GUI)
    mainWindows.sig.connect(handle_signal)
    app.exec_()
    
def run_in_thread(GUI:QObject):
    global sub_thread
    sub_thread = threading.Thread(target=run_forever, args=(GUI,))
    sub_thread.setDaemon(True)
    sub_thread.start()
    # 需等待线程启动成功，否则会丢失 _GUI 打印的版本信息
    time.sleep(0.05)
    return sub_thread

def signale(dat):
    mainWindows.sig.emit(dat)

def handle_signal(dat):
    if isinstance(dat, str):
        dat = dat.lower()
        if dat == 'start':
            mainWindows.show()
        elif dat == 'stop':
            mainWindows.hide()
        elif dat == 'exit':
            mainWindows.close()
    else:
        mainWindows.sub_win.sig.emit(dat)
    
def StopGui():
    return mainWindows.hide()

def StartGui():
    return mainWindows.show()

def exit():
    signale('exit')
    sub_thread.join()


if __name__ == '__main__':
    run_forever(1)