diff options
Diffstat (limited to 'examples/widgets/thread_signals')
-rw-r--r-- | examples/widgets/thread_signals/thread_signals.py | 63 | ||||
-rw-r--r-- | examples/widgets/thread_signals/thread_signals.pyproject | 3 |
2 files changed, 66 insertions, 0 deletions
diff --git a/examples/widgets/thread_signals/thread_signals.py b/examples/widgets/thread_signals/thread_signals.py new file mode 100644 index 000000000..f9101bd8c --- /dev/null +++ b/examples/widgets/thread_signals/thread_signals.py @@ -0,0 +1,63 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause +from __future__ import annotations + +import sys +from PySide6.QtCore import QObject, QThread, Signal, Slot +from PySide6.QtWidgets import QApplication, QPushButton, QVBoxLayout, QWidget + + +# Create a basic window with a layout and a button +class MainForm(QWidget): + def __init__(self): + super().__init__() + self.setWindowTitle("My Form") + self.layout = QVBoxLayout() + self.button = QPushButton("Click me!") + self.button.clicked.connect(self.start_thread) + self.layout.addWidget(self.button) + self.setLayout(self.layout) + + # Instantiate and start a new thread + def start_thread(self): + instanced_thread = WorkerThread(self) + instanced_thread.start() + + # Create the Slots that will receive signals + @Slot(str) + def update_str_field(self, message): + print(message) + + @Slot(int) + def update_int_field(self, value): + print(value) + + +# Signals must inherit QObject +class MySignals(QObject): + signal_str = Signal(str) + signal_int = Signal(int) + + +# Create the Worker Thread +class WorkerThread(QThread): + def __init__(self, parent=None): + QThread.__init__(self, parent) + # Instantiate signals and connect signals to the slots + self.signals = MySignals() + self.signals.signal_str.connect(parent.update_str_field) + self.signals.signal_int.connect(parent.update_int_field) + + def run(self): + # Do something on the worker thread + a = 1 + 1 + # Emit signals whenever you want + self.signals.signal_int.emit(a) + self.signals.signal_str.emit("This text comes to Main thread from our Worker thread.") + + +if __name__ == "__main__": + app = QApplication(sys.argv) + window = MainForm() + window.show() + sys.exit(app.exec()) diff --git a/examples/widgets/thread_signals/thread_signals.pyproject b/examples/widgets/thread_signals/thread_signals.pyproject new file mode 100644 index 000000000..e36f7633c --- /dev/null +++ b/examples/widgets/thread_signals/thread_signals.pyproject @@ -0,0 +1,3 @@ +{ + "files": ["thread_signals.py"] +} |