睡觉工作线程导致主gui冻结。
我想做的是：
在我的情况下，当MyThread再次唤醒时，主操作被取消。我希望它立即被取消。
import sys
from PyQt4 import QtGui, QtCore
import time
try:
_fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
_fromUtf8 = lambda s: s
class Ui_dialog_progress(object):
def setupUi(self, dialog_progress):
dialog_progress.setObjectName("dialog_progress")
dialog_progress.resize(401, 165)
self.gridLayout = QtGui.QGridLayout(dialog_progress)
self.gridLayout.setObjectName("gridLayout")
self.lblFileName = QtGui.QLabel(dialog_progress)
self.lblFileName.setText("")
self.lblFileName.setObjectName("lblFileName")
self.gridLayout.addWidget(self.lblFileName, 0, 0, 1, 2)
self.pbarFileSize = QtGui.QProgressBar(dialog_progress)
self.pbarFileSize.setProperty("value", 0)
self.pbarFileSize.setObjectName("pbarFileSize")
self.gridLayout.addWidget(self.pbarFileSize, 1, 0, 1, 2)
self.label_2 = QtGui.QLabel(dialog_progress)
self.label_2.setObjectName("label_2")
self.gridLayout.addWidget(self.label_2, 2, 0, 1, 1)
self.pbarTotal = QtGui.QProgressBar(dialog_progress)
self.pbarTotal.setProperty("value", 0)
self.pbarTotal.setObjectName("pbarTotal")
self.gridLayout.addWidget(self.pbarTotal, 3, 0, 1, 2)
self.lblTotal = QtGui.QLabel(dialog_progress)
self.lblTotal.setText("")
self.lblTotal.setObjectName("lblTotal")
self.gridLayout.addWidget(self.lblTotal, 4, 0, 1, 2)
spacerItem = QtGui.QSpacerItem(213, 20, QtGui.QSizePolicy.Expanding, QtGui.QSizePolicy.Minimum)
self.gridLayout.addItem(spacerItem, 6, 0, 1, 1)
spacerItem1 = QtGui.QSpacerItem(20, 5, QtGui.QSizePolicy.Minimum, QtGui.QSizePolicy.Expanding)
self.gridLayout.addItem(spacerItem1, 5, 1, 1, 1)
self.btnPbarCancel = QtGui.QPushButton(dialog_progress)
self.btnPbarCancel.setObjectName("btnPbarCancel")
self.gridLayout.addWidget(self.btnPbarCancel, 6, 1, 1, 1)
self.retranslateUi(dialog_progress)
QtCore.QMetaObject.connectSlotsByName(dialog_progress)
def retranslateUi(self, dialog_progress):
dialog_progress.setWindowTitle(QtGui.QApplication.translate("dialog_progress", "Dialog", None, QtGui.QApplication.UnicodeUTF8))
self.label_2.setText(QtGui.QApplication.translate("dialog_progress", "Total:", None, QtGui.QApplication.UnicodeUTF8))
self.btnPbarCancel.setText(QtGui.QApplication.translate("dialog_progress", "Cancel", None, QtGui.QApplication.UnicodeUTF8))
class Ui_dialog_file(object):
def setupUi(self, dialog_file):
dialog_file.setObjectName(_fromUtf8("dialog_file"))
dialog_file.resize(101, 59)
self.btnCreate = QtGui.QPushButton(dialog_file)
self.btnCreate.setGeometry(QtCore.QRect(10, 20, 77, 25))
self.btnCreate.setObjectName(_fromUtf8("btnCreate"))
self.retranslateUi(dialog_file)
QtCore.QMetaObject.connectSlotsByName(dialog_file)
def retranslateUi(self, dialog_file):
dialog_file.setWindowTitle(QtGui.QApplication.translate("dialog_file", "file", None, QtGui.QApplication.UnicodeUTF8))
self.btnCreate.setText(QtGui.QApplication.translate("dialog_file", "Create", None, QtGui.QApplication.UnicodeUTF8))
class ProgressDialog(QtGui.QDialog):
def __init__(self, parent=None):
QtGui.QDialog.__init__(self, parent = None)
self.ui = Ui_dialog_progress()
self.ui.setupUi(self)
# self.setWindowModality(QtCore.Qt.ApplicationModal)
class MyThread(QtCore.QThread):
trigger = QtCore.pyqtSignal()
updateFPD = QtCore.pyqtSignal(int, QtCore.QString)
updateTPD = QtCore.pyqtSignal(int, QtCore.QString)
showpdSignal = QtCore.pyqtSignal(bool)
def __init__(self, parent=None, no=0):
super(MyThread, self).__init__(parent)
self.aborted= False
self.threadNo = no
# self.name = "Thread %d"%self.threadNo
def run(self):
self.trigger.emit()
def emitSignals(self, iprogress = -99, tprogress = -99,\
updateFPDSignal = True, updateTPDSignal = None,\
showpdSignal = False, peSignal = None, msg = None
):
if updateFPDSignal:
self.updateFPD.emit(iprogress, msg)
if updateTPDSignal:
self.updateTPD.emit(tprogress, msg)
if showpdSignal:
self.showpdSignal.emit(True)
else:
self.showpdSignal.emit(False)
if peSignal:
QtGui.QApplication.processEvents()
def abort(self):
self.aborted = True
print "aborted"
def stop(self):
self.terminate()
class Main(QtGui.QDialog):
def __init__(self, parent=None):
super(Main, self).__init__(parent)
self.ui = Ui_dialog_file()
self.ui.setupUi(self)
self.ui.btnCreate.clicked.connect(self.start_threads)
self.count = 0
def start_threads(self):
self.mythread = MyThread()
self.pd = ProgressDialog()
signal = QtCore.SIGNAL("clicked()")
self.pd.ui.btnPbarCancel.connect(self.pd.ui.btnPbarCancel, signal, self.abort)
self.mythread.trigger.connect(self.pdialog)
self.mythread.updateFPD.connect(self.updateFileProgress)
self.mythread.updateTPD.connect(self.updateTotalProgress)
self.mythread.start()
def abort(self):
self.pd.close()
self.mythread.aborted = True
def updateFileProgress(self, j, name):
self.pd.ui.lblFileName.setText(name)
self.pd.ui.pbarFileSize.setValue(j)
print "name: %s, fileprogress: %d"%(name,j)
def updateTotalProgress(self, i, name):
self.pd.ui.pbarTotal.setValue(i)
print "name: %s, total progress %d"%(name, i)
def showProgressDialog(self, show):
if show:
self.pd.show()
else:
self.pd.close()
def pdialog(self):
for k in range(3):
self.pd.show()
i = 1
self.mythread.emitSignals(iprogress =0 , tprogress = 0, updateFPDSignal = True,
updateTPDSignal = True, showpdSignal = True, msg = "")
j = 1
while i < 100:
while j <= 100:
print j
self.mythread.emitSignals(iprogress = j, updateFPDSignal = True,\
peSignal = True, msg = "")
j += 1
i += 1
j = 1
self.mythread.emitSignals(tprogress = i, updateTPDSignal = True,\
peSignal = True, msg = "")
if self.mythread.aborted:
return
self.mythread.sleep(10)
self.pd.close()
if __name__ == '__main__':
app = QtGui.QApplication(sys.argv)
mainwindow = Main()
mainwindow.show()
sys.exit(app.exec_())
答案 0 :(得分：0)
您的MyThread并没有真正做任何事情，因为您可以看到它是run方法。所有其他方法仍然从主线程调用，因此仍然在那里发生。
请阅读Qt Threading Basics，特别是关于QObjects和线程的部分，它应该清楚说明为什么你使用QThreads的方式正在工作。
您可能真正想做的是：
moveToThread方法