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#!/usr/bin/env python
#Author velociraptor Genjix <aphidia@hotmail.com>
from PySide.QtGui import *
from PySide.QtCore import *
class PingEvent(QEvent):
def __init__(self):
super(PingEvent, self).__init__(QEvent.Type(QEvent.User+2))
class PongEvent(QEvent):
def __init__(self):
super(PongEvent, self).__init__(QEvent.Type(QEvent.User+3))
class Pinger(QState):
def __init__(self, parent):
super(Pinger, self).__init__(parent)
def onEntry(self, e):
self.p = PingEvent()
self.machine().postEvent(self.p)
print('ping?')
class PongTransition(QAbstractTransition):
def eventTest(self, e):
return e.type() == QEvent.User+3
def onTransition(self, e):
self.p = PingEvent()
machine.postDelayedEvent(self.p, 500)
print('ping?')
class PingTransition(QAbstractTransition):
def eventTest(self, e):
return e.type() == QEvent.User+2
def onTransition(self, e):
self.p = PongEvent()
machine.postDelayedEvent(self.p, 500)
print('pong!')
if __name__ == '__main__':
import sys
app = QCoreApplication(sys.argv)
machine = QStateMachine()
group = QState(QState.ParallelStates)
group.setObjectName('group')
pinger = Pinger(group)
pinger.setObjectName('pinger')
pinger.addTransition(PongTransition())
ponger = QState(group)
ponger.setObjectName('ponger')
ponger.addTransition(PingTransition())
machine.addState(group)
machine.setInitialState(group)
machine.start()
sys.exit(app.exec_())
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