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# Copyright (C) 2022 The Qt Company Ltd.
# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
import os
from pathlib import Path
import sys
from PySide6.QtCore import QObject, QTimer, QUrl, Signal, Slot
from PySide6.QtGui import QGuiApplication
from PySide6.QtQuick import QQuickView
from PySide6.QtQml import QmlElement
# To be used on the @QmlElement decorator
# (QML_IMPORT_MINOR_VERSION is optional)
QML_IMPORT_NAME = "examples.signals.pytoqml2"
QML_IMPORT_MAJOR_VERSION = 1
@QmlElement
class RotateValue(QObject):
valueChanged = Signal(int, arguments=['val'])
def __init__(self):
super().__init__()
self.r = 0
@Slot()
def increment(self):
self.r = self.r + 10
self.valueChanged.emit(self.r)
if __name__ == '__main__':
app = QGuiApplication(sys.argv)
view = QQuickView()
rotatevalue = RotateValue()
timer = QTimer()
timer.start(2000)
view.setInitialProperties({"rotatevalue": rotatevalue})
qml_file = os.fspath(Path(__file__).resolve().parent / 'view.qml')
view.setSource(QUrl.fromLocalFile(qml_file))
if view.status() == QQuickView.Error:
sys.exit(-1)
timer.timeout.connect(rotatevalue.increment)
view.show()
res = app.exec()
# Deleting the view before it goes out of scope is required to make
# sure all child QML instances are destroyed in the correct order.
del view
sys.exit(res)
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