diff options
Diffstat (limited to 'examples/widgets/state-machine/pingpong/pingpong.py')
-rw-r--r-- | examples/widgets/state-machine/pingpong/pingpong.py | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/examples/widgets/state-machine/pingpong/pingpong.py b/examples/widgets/state-machine/pingpong/pingpong.py new file mode 100644 index 000000000..f2e1f59f7 --- /dev/null +++ b/examples/widgets/state-machine/pingpong/pingpong.py @@ -0,0 +1,98 @@ + +############################################################################# +## +## Copyright (C) 2010 velociraptor Genjix <aphidia@hotmail.com> +## Copyright (C) 2021 The Qt Company Ltd. +## Contact: http://www.qt.io/licensing/ +## +## This file is part of the Qt for Python examples of the Qt Toolkit. +## +## $QT_BEGIN_LICENSE:BSD$ +## You may use this file under the terms of the BSD license as follows: +## +## "Redistribution and use in source and binary forms, with or without +## modification, are permitted provided that the following conditions are +## met: +## * Redistributions of source code must retain the above copyright +## notice, this list of conditions and the following disclaimer. +## * Redistributions in binary form must reproduce the above copyright +## notice, this list of conditions and the following disclaimer in +## the documentation and/or other materials provided with the +## distribution. +## * Neither the name of The Qt Company Ltd nor the names of its +## contributors may be used to endorse or promote products derived +## from this software without specific prior written permission. +## +## +## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +## OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +## +## $QT_END_LICENSE$ +## +############################################################################# + +from PySide6.QtWidgets import * +from PySide6.QtCore import * +from PySide6.QtStateMachine import QAbstractTransition, QState, QStateMachine + + +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_()) |