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,Signal
from PySide2 import QtCore
from main_windows import MainWindow
# 兼容4K屏幕
QtCore.QCoreApplication.setAttribute(QtCore.Qt.AA_EnableHighDpiScaling)
QApplication.setAttribute(QtCore.Qt.AA_UseHighDpiPixmaps, True)
app = None
mainWindows:MainWindow = None
GUI_instan = None
sub_thread = None
exit_flag = False

class Application(QApplication):
    sig = Signal(object)
    def __init__(self, argv):
        super().__init__(argv)

def run_forever(GUI):
    global app,mainWindows,GUI_instan
    QtCore.QCoreApplication.setAttribute(QtCore.Qt.AA_ShareOpenGLContexts)
    app = Application(sys.argv)
    mainWindows = MainWindow(GUI)
    mainWindows.sig.connect(handle_signal)
    GUI.Elaborate("top", True)
    GUI_instan = GUI
    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()
        sig_call = {'start':mainWindows.show, 'stop':mainWindows.hide, 'exit':mainWindows.close,
                    'busy': mainWindows.busy, 
                    "ready": mainWindows.ready, 
                    "stage": mainWindows.stage,
                    }
        call = sig_call.get(dat)
        if call:
            call()
    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)