Am Donnerstag 13 August 2009 08:58:32 schrieb Arnold Krille:
> [...]
> Are these long-running functions implemented in python? Otherwise they will
> release the GIL and your gui becomes snappy again.
Yes, they are in Python.
I think it works now, attached a simple script for demonstration. Comments are
welcome ;)
#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright (c) 2009 Lukas Hetzenecker <l...@gmx.at>
import random
from PyQt4.QtCore import *
from PyQt4.QtGui import *
class ThreadBase(QThread):
def __init__(self, parent=None):
QThread.__init__(self)
self.parent = parent
self._mutex = QMutex()
self._action = None
self._argument = None
def action(self, action, argument=None):
self._mutex.lock()
self._action = action
self._argument = argument
self._mutex.unlock()
class Thread(ThreadBase):
def __init__(self, parent=None):
ThreadBase.__init__(self)
def run(self):
print "Started Thread..."
while True:
self._mutex.lock()
action = self._action
argument = self._argument
if action:
if action == "hello":
print "Hello World!"
elif action == "random":
print "Hello " + argument
elif action == "quit":
print "Bye bye!"
self._action = None
self._argument = None
self._mutex.unlock()
self.quit()
break
self._action = None
self._argument = None
self._mutex.unlock()
qApp.processEvents()
self.usleep(300)
class Widget(QWidget):
def __init__(self):
QWidget.__init__(self)
startBtn = QPushButton("Start")
helloBtn = QPushButton("Say hello!")
textBtn = QPushButton("Say random text!")
endBtn = QPushButton("Quit Thread")
self.thread = Thread()
layout = QVBoxLayout(self)
layout.addWidget(startBtn)
layout.addWidget(helloBtn)
layout.addWidget(textBtn)
layout.addWidget(endBtn)
self.setLayout(layout)
self.connect(startBtn, SIGNAL("clicked()"), self.startThread)
self.connect(helloBtn, SIGNAL("clicked()"), self.sayHello)
self.connect(textBtn, SIGNAL("clicked()"), self.randomText)
self.connect(endBtn, SIGNAL("clicked()"), self.quitThread)
def startThread(self):
self.thread.start()
def sayHello(self):
self.thread.action("hello")
def randomText(self):
text = str().join( [ chr(random.randint(ord("A"), ord("z"))) for i in range(10) ] )
self.thread.action("random", text)
def quitThread(self):
self.thread.action("quit")
app = QApplication([])
w = Widget()
w.show()
app.exec_()
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