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import os
import signal
import sys
import threading
import traceback
from typing import TYPE_CHECKING
try:
import PyQt5
except Exception:
sys.exit("Error: Could not import PyQt5 on Linux systems, you may try 'sudo apt-get install python3-pyqt5'")
try:
import PyQt5.QtQml
except Exception:
sys.exit("Error: Could not import PyQt5.QtQml on Linux systems, you may try 'sudo apt-get install python3-pyqt5.qtquick'")
from PyQt5.QtCore import QLocale, QTimer
from PyQt5.QtGui import QGuiApplication
import PyQt5.QtCore as QtCore
from electrum.i18n import set_language, languages
from electrum.plugin import run_hook
from electrum.util import (profiler)
from electrum.logging import Logger
if TYPE_CHECKING:
from electrum.daemon import Daemon
from electrum.simple_config import SimpleConfig
from electrum.plugin import Plugins
from .qeapp import ElectrumQmlApplication
class UncaughtException(Exception):
pass
class ElectrumGui(Logger):
@profiler
def __init__(self, config: 'SimpleConfig', daemon: 'Daemon', plugins: 'Plugins'):
set_language(config.get('language', self.get_default_language()))
Logger.__init__(self)
#os.environ['QML_IMPORT_TRACE'] = '1'
#os.environ['QT_DEBUG_PLUGINS'] = '1'
self.logger.info(f"Qml GUI starting up... Qt={QtCore.QT_VERSION_STR}, PyQt={QtCore.PYQT_VERSION_STR}")
self.logger.info("CWD=%s" % os.getcwd())
# Uncomment this call to verify objects are being properly
# GC-ed when windows are closed
#network.add_jobs([DebugMem([Abstract_Wallet, SPV, Synchronizer,
# ElectrumWindow], interval=5)])
QtCore.QCoreApplication.setAttribute(QtCore.Qt.AA_X11InitThreads)
if hasattr(QtCore.Qt, "AA_ShareOpenGLContexts"):
QtCore.QCoreApplication.setAttribute(QtCore.Qt.AA_ShareOpenGLContexts)
if hasattr(QGuiApplication, 'setDesktopFileName'):
QGuiApplication.setDesktopFileName('electrum.desktop')
if hasattr(QtCore.Qt, "AA_EnableHighDpiScaling"):
QtCore.QCoreApplication.setAttribute(QtCore.Qt.AA_EnableHighDpiScaling);
if not "QT_QUICK_CONTROLS_STYLE" in os.environ:
os.environ["QT_QUICK_CONTROLS_STYLE"] = "Material"
self.gui_thread = threading.current_thread()
self.plugins = plugins
self.app = ElectrumQmlApplication(sys.argv, config, daemon)
# timer
self.timer = QTimer(self.app)
self.timer.setSingleShot(False)
self.timer.setInterval(500) # msec
self.timer.timeout.connect(lambda: None) # periodically enter python scope
sys.excepthook = self.excepthook
threading.excepthook = self.texcepthook
# Initialize any QML plugins
run_hook('init_qml', self)
self.app.engine.load('electrum/gui/qml/components/main.qml')
def close(self):
self.app.quit()
def excepthook(self, exc_type, exc_value, exc_tb):
tb = "".join(traceback.format_exception(exc_type, exc_value, exc_tb))
self.logger.exception(tb)
self.app._valid = False
self.close()
def texcepthook(self, arg):
tb = "".join(traceback.format_exception(arg.exc_type, arg.exc_value, arg.exc_tb))
self.logger.exception(tb)
self.app._valid = False
self.close()
def main(self):
if not self.app._valid:
return
self.timer.start()
signal.signal(signal.SIGINT, lambda *args: self.stop())
self.logger.info('Entering main loop')
self.app.exec_()
def stop(self):
self.logger.info('closing GUI')
self.app.quit()
def get_default_language(self):
name = QLocale.system().name()
return name if name in languages else 'en_UK'