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Diffstat (limited to 'examples/widgets/tutorials/cannon/t10.py')
| -rw-r--r-- | examples/widgets/tutorials/cannon/t10.py | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/examples/widgets/tutorials/cannon/t10.py b/examples/widgets/tutorials/cannon/t10.py new file mode 100644 index 000000000..ca7e9d9b7 --- /dev/null +++ b/examples/widgets/tutorials/cannon/t10.py @@ -0,0 +1,191 @@ + +############################################################################# +## +## 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." +## +## $QT_END_LICENSE$ +## +############################################################################# + +# PySide6 tutorial 10 + + +import sys +from PySide6 import QtCore, QtGui, QtWidgets + + +class LCDRange(QtWidgets.QWidget): + valueChanged = QtCore.Signal(int) + def __init__(self, parent=None): + QtWidgets.QWidget.__init__(self, parent) + + lcd = QtWidgets.QLCDNumber(2) + self.slider = QtWidgets.QSlider(QtCore.Qt.Horizontal) + self.slider.setRange(0, 99) + self.slider.setValue(0) + + self.connect(self.slider, QtCore.SIGNAL("valueChanged(int)"), + lcd, QtCore.SLOT("display(int)")) + self.connect(self.slider, QtCore.SIGNAL("valueChanged(int)"), + self, QtCore.SIGNAL("valueChanged(int)")) + + layout = QtWidgets.QVBoxLayout() + layout.addWidget(lcd) + layout.addWidget(self.slider) + self.setLayout(layout) + + self.setFocusProxy(self.slider) + + def value(self): + return self.slider.value() + + @QtCore.Slot(int) + def setValue(self, value): + self.slider.setValue(value) + + def setRange(self, minValue, maxValue): + if minValue < 0 or maxValue > 99 or minValue > maxValue: + QtCore.qWarning("LCDRange::setRange(%d, %d)\n" + "\tRange must be 0..99\n" + "\tand minValue must not be greater than maxValue" % (minValue, maxValue)) + return + + self.slider.setRange(minValue, maxValue) + + +class CannonField(QtWidgets.QWidget): + angleChanged = QtCore.Signal(int) + forceChanged = QtCore.Signal(int) + def __init__(self, parent=None): + QtWidgets.QWidget.__init__(self, parent) + + self.currentAngle = 45 + self.currentForce = 0 + self.setPalette(QtGui.QPalette(QtGui.QColor(250, 250, 200))) + self.setAutoFillBackground(True) + + def angle(self): + return self.currentAngle + + @QtCore.Slot(int) + def setAngle(self, angle): + if angle < 5: + angle = 5 + if angle > 70: + angle = 70 + if self.currentAngle == angle: + return + self.currentAngle = angle + self.update() + self.emit(QtCore.SIGNAL("angleChanged(int)"), self.currentAngle) + + def force(self): + return self.currentForce + + @QtCore.Slot(int) + def setForce(self, force): + if force < 0: + force = 0 + if self.currentForce == force: + return + self.currentForce = force + self.emit(QtCore.SIGNAL("forceChanged(int)"), self.currentForce) + + def paintEvent(self, event): + painter = QtGui.QPainter(self) + + painter.setPen(QtCore.Qt.NoPen) + painter.setBrush(QtCore.Qt.blue) + + painter.translate(0, self.height()) + painter.drawPie(QtCore.QRect(-35, -35, 70, 70), 0, 90 * 16) + painter.rotate(-self.currentAngle) + painter.drawRect(QtCore.QRect(33, -4, 15, 8)) + + def cannonRect(self): + result = QtCore.QRect(0, 0, 50, 50) + result.moveBottomLeft(self.rect().bottomLect()) + return result + + +class MyWidget(QtWidgets.QWidget): + def __init__(self, parent=None): + QtWidgets.QWidget.__init__(self, parent) + + quit = QtWidgets.QPushButton("&Quit") + quit.setFont(QtGui.QFont("Times", 18, QtGui.QFont.Bold)) + + self.connect(quit, QtCore.SIGNAL("clicked()"), + qApp, QtCore.SLOT("quit()")) + + angle = LCDRange() + angle.setRange(5, 70) + + force = LCDRange() + force.setRange(10, 50) + + cannonField = CannonField() + + self.connect(angle, QtCore.SIGNAL("valueChanged(int)"), + cannonField.setAngle) + self.connect(cannonField, QtCore.SIGNAL("angleChanged(int)"), + angle.setValue) + + self.connect(force, QtCore.SIGNAL("valueChanged(int)"), + cannonField.setForce) + self.connect(cannonField, QtCore.SIGNAL("forceChanged(int)"), + force.setValue) + + leftLayout = QtWidgets.QVBoxLayout() + leftLayout.addWidget(angle) + leftLayout.addWidget(force) + + gridLayout = QtWidgets.QGridLayout() + gridLayout.addWidget(quit, 0, 0) + gridLayout.addLayout(leftLayout, 1, 0) + gridLayout.addWidget(cannonField, 1, 1, 2, 1) + gridLayout.setColumnStretch(1, 10) + self.setLayout(gridLayout) + + angle.setValue(60) + force.setValue(25) + angle.setFocus() + + +app = QtWidgets.QApplication(sys.argv) +widget = MyWidget() +widget.setGeometry(100, 100, 500, 355) +widget.show() +sys.exit(app.exec_()) |