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#!/usr/bin/env python
#############################################################################
##
## Copyright (C) 2010 velociraptor Genjix <aphidia@hotmail.com>
## Copyright (C) 2016 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 PySide2.QtWidgets import *
from PySide2.QtCore import *
class MainWindow(QMainWindow):
def __init__(self):
super(MainWindow, self).__init__()
button = QPushButton(self)
button.setGeometry(QRect(100, 100, 100, 100))
machine = QStateMachine(self)
s1 = QState()
s1.assignProperty(button, 'text', 'Outside')
s2 = QState()
s2.assignProperty(button, 'text', 'Inside')
enterTransition = QEventTransition(button, QEvent.Enter)
enterTransition.setTargetState(s2)
s1.addTransition(enterTransition)
leaveTransition = QEventTransition(button, QEvent.Leave)
leaveTransition.setTargetState(s1)
s2.addTransition(leaveTransition)
s3 = QState()
s3.assignProperty(button, 'text', 'Pressing...')
pressTransition = QEventTransition(button, QEvent.MouseButtonPress)
pressTransition.setTargetState(s3)
s2.addTransition(pressTransition)
releaseTransition = QEventTransition(button, QEvent.MouseButtonRelease)
releaseTransition.setTargetState(s2)
s3.addTransition(releaseTransition)
machine.addState(s1)
machine.addState(s2)
machine.addState(s3)
machine.setInitialState(s1)
machine.start()
self.setCentralWidget(button)
self.show()
if __name__ == '__main__':
import sys
app = QApplication(sys.argv)
mainWin = MainWindow()
sys.exit(app.exec_())
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