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Diffstat (limited to 'examples/widgets/state-machine/trafficlight.py')
| -rw-r--r-- | examples/widgets/state-machine/trafficlight.py | 139 |
1 files changed, 0 insertions, 139 deletions
diff --git a/examples/widgets/state-machine/trafficlight.py b/examples/widgets/state-machine/trafficlight.py deleted file mode 100644 index 3be9b457f..000000000 --- a/examples/widgets/state-machine/trafficlight.py +++ /dev/null @@ -1,139 +0,0 @@ - -############################################################################# -## -## 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.QtGui import * -from PySide2.QtCore import * - -class LightWidget(QWidget): - def __init__(self, color): - super(LightWidget, self).__init__() - self.color = color - self.onVal = False - def isOn(self): - return self.onVal - def setOn(self, on): - if self.onVal == on: - return - self.onVal = on - self.update() - @Slot() - def turnOff(self): - self.setOn(False) - @Slot() - def turnOn(self): - self.setOn(True) - def paintEvent(self, e): - if not self.onVal: - return - painter = QPainter(self) - painter.setRenderHint(QPainter.Antialiasing) - painter.setBrush(self.color) - painter.drawEllipse(0, 0, self.width(), self.height()) - - on = Property(bool, isOn, setOn) - -class TrafficLightWidget(QWidget): - def __init__(self): - super(TrafficLightWidget, self).__init__() - vbox = QVBoxLayout(self) - self.redLight = LightWidget(Qt.red) - vbox.addWidget(self.redLight) - self.yellowLight = LightWidget(Qt.yellow) - vbox.addWidget(self.yellowLight) - self.greenLight = LightWidget(Qt.green) - vbox.addWidget(self.greenLight) - pal = QPalette() - pal.setColor(QPalette.Background, Qt.black) - self.setPalette(pal) - self.setAutoFillBackground(True) - -def createLightState(light, duration, parent=None): - lightState = QState(parent) - timer = QTimer(lightState) - timer.setInterval(duration) - timer.setSingleShot(True) - timing = QState(lightState) - timing.entered.connect(light.turnOn) - timing.entered.connect(timer.start) - timing.exited.connect(light.turnOff) - done = QFinalState(lightState) - timing.addTransition(timer, SIGNAL('timeout()'), done) - lightState.setInitialState(timing) - return lightState - -class TrafficLight(QWidget): - def __init__(self): - super(TrafficLight, self).__init__() - vbox = QVBoxLayout(self) - widget = TrafficLightWidget() - vbox.addWidget(widget) - vbox.setContentsMargins(0, 0, 0, 0) - - machine = QStateMachine(self) - redGoingYellow = createLightState(widget.redLight, 1000) - redGoingYellow.setObjectName('redGoingYellow') - yellowGoingGreen = createLightState(widget.redLight, 1000) - yellowGoingGreen.setObjectName('redGoingYellow') - redGoingYellow.addTransition(redGoingYellow, SIGNAL('finished()'), yellowGoingGreen) - greenGoingYellow = createLightState(widget.yellowLight, 3000) - greenGoingYellow.setObjectName('redGoingYellow') - yellowGoingGreen.addTransition(yellowGoingGreen, SIGNAL('finished()'), greenGoingYellow) - yellowGoingRed = createLightState(widget.greenLight, 1000) - yellowGoingRed.setObjectName('redGoingYellow') - greenGoingYellow.addTransition(greenGoingYellow, SIGNAL('finished()'), yellowGoingRed) - yellowGoingRed.addTransition(yellowGoingRed, SIGNAL('finished()'), redGoingYellow) - - machine.addState(redGoingYellow) - machine.addState(yellowGoingGreen) - machine.addState(greenGoingYellow) - machine.addState(yellowGoingRed) - machine.setInitialState(redGoingYellow) - machine.start() - -if __name__ == '__main__': - import sys - app = QApplication(sys.argv) - widget = TrafficLight() - widget.resize(110, 300) - widget.show() - sys.exit(app.exec_()) |