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PySide Signals and Slots with QThread example
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| #!/usr/bin/env python2 | |
| import sys, time | |
| from PySide.QtGui import * | |
| from PySide.QtCore import * | |
| class MySignal(QObject): | |
| sig = Signal(str) | |
| class MyLongThread(QThread): | |
| def __init__(self, parent = None): | |
| QThread.__init__(self, parent) | |
| self.exiting = False | |
| self.signal = MySignal() | |
| def run(self): | |
| end = time.time()+10 | |
| while self.exiting==False: | |
| sys.stdout.write('*') | |
| sys.stdout.flush() | |
| time.sleep(1) | |
| now = time.time() | |
| if now>=end: | |
| self.exiting=True | |
| self.signal.sig.emit('OK') | |
| class MyThread(QThread): | |
| def __init__(self, parent = None): | |
| QThread.__init__(self, parent) | |
| self.exiting = False | |
| def run(self): | |
| while self.exiting==False: | |
| sys.stdout.write('.') | |
| sys.stdout.flush() | |
| time.sleep(1) | |
| class MainWindow(QMainWindow): | |
| def __init__(self, parent=None): | |
| QMainWindow.__init__(self,parent) | |
| self.centralwidget = QWidget(self) | |
| self.batchbutton = QPushButton('Start batch',self) | |
| self.longbutton = QPushButton('Start long (10 seconds) operation',self) | |
| self.label1 = QLabel('Continuos batch') | |
| self.label2 = QLabel('Long batch') | |
| self.vbox = QVBoxLayout() | |
| self.vbox.addWidget(self.batchbutton) | |
| self.vbox.addWidget(self.longbutton) | |
| self.vbox.addWidget(self.label1) | |
| self.vbox.addWidget(self.label2) | |
| self.setCentralWidget(self.centralwidget) | |
| self.centralwidget.setLayout(self.vbox) | |
| self.thread = MyThread() | |
| self.longthread = MyLongThread() | |
| self.batchbutton.clicked.connect(self.handletoggle) | |
| self.longbutton.clicked.connect(self.longoperation) | |
| self.thread.started.connect(self.started) | |
| self.thread.finished.connect(self.finished) | |
| self.thread.terminated.connect(self.terminated) | |
| self.longthread.signal.sig.connect(self.longoperationcomplete) | |
| def started(self): | |
| self.label1.setText('Continuous batch started') | |
| def finished(self): | |
| self.label1.setText('Continuous batch stopped') | |
| def terminated(self): | |
| self.label1.setText('Continuous batch terminated') | |
| def handletoggle(self): | |
| if self.thread.isRunning(): | |
| self.thread.exiting=True | |
| self.batchbutton.setEnabled(False) | |
| while self.thread.isRunning(): | |
| time.sleep(0.01) | |
| continue | |
| self.batchbutton.setText('Start batch') | |
| self.batchbutton.setEnabled(True) | |
| else: | |
| self.thread.exiting=False | |
| self.thread.start() | |
| self.batchbutton.setEnabled(False) | |
| while not self.thread.isRunning(): | |
| time.sleep(0.01) | |
| continue | |
| self.batchbutton.setText('Stop batch') | |
| self.batchbutton.setEnabled(True) | |
| def longoperation(self): | |
| if not self.longthread.isRunning(): | |
| self.longthread.exiting=False | |
| self.longthread.start() | |
| self.label2.setText('Long operation started') | |
| self.longbutton.setEnabled(False) | |
| def longoperationcomplete(self,data): | |
| self.label2.setText('Long operation completed with: '+data) | |
| self.longbutton.setEnabled(True) | |
| if __name__=='__main__': | |
| app = QApplication(sys.argv) | |
| window = MainWindow() | |
| window.show() | |
| sys.exit(app.exec_()) |
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https://gist.github.com/matteomattei/a62338bac981c34f301f#file-pyside_signal_slot_qthread_example-py-L23
You can correct the "greater than"