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Diffstat (limited to 'examples/tutorial/t11.py')
| -rw-r--r-- | examples/tutorial/t11.py | 264 |
1 files changed, 264 insertions, 0 deletions
diff --git a/examples/tutorial/t11.py b/examples/tutorial/t11.py new file mode 100644 index 000000000..070782b3f --- /dev/null +++ b/examples/tutorial/t11.py @@ -0,0 +1,264 @@ +#!/usr/bin/env python + +############################################################################# +## +## Copyright (C) 2016 The Qt Company Ltd. +## Contact: http://www.qt.io/licensing/ +## +## This file is part of the PySide 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." +## +## $QT_END_LICENSE$ +## +############################################################################# + +# PySide2 tutorial 11 + + +import sys +import math +from PySide2 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.timerCount = 0 + self.autoShootTimer = QtCore.QTimer(self) + self.connect(self.autoShootTimer, QtCore.SIGNAL("timeout()"), + self.moveShot) + self.shootAngle = 0 + self.shootForce = 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) + + @QtCore.Slot() + def shoot(self): + if self.autoShootTimer.isActive(): + return + self.timerCount = 0 + self.shootAngle = self.currentAngle + self.shootForce = self.currentForce + self.autoShootTimer.start(5) + + @QtCore.Slot() + def moveShot(self): + region = QtGui.QRegion(self.shotRect()) + self.timerCount += 1 + + shotR = self.shotRect() + + if shotR.x() > self.width() or shotR.y() > self.height(): + self.autoShootTimer.stop() + else: + region = region.united(QtGui.QRegion(shotR)) + + self.update(region) + + def paintEvent(self, event): + painter = QtGui.QPainter(self) + + self.paintCannon(painter) + if self.autoShootTimer.isActive(): + self.paintShot(painter) + + def paintShot(self, painter): + painter.setPen(QtCore.Qt.NoPen); + painter.setBrush(QtCore.Qt.black) + painter.drawRect(self.shotRect()) + + barrelRect = QtCore.QRect(33, -4, 15, 8) + + def paintCannon(self, painter): + painter.setPen(QtCore.Qt.NoPen) + painter.setBrush(QtCore.Qt.blue) + + painter.save() + painter.translate(0, self.height()) + painter.drawPie(QtCore.QRect(-35, -35, 70, 70), 0, 90 * 16) + painter.rotate(-self.currentAngle) + painter.drawRect(CannonField.barrelRect) + painter.restore() + + def cannonRect(self): + result = QtCore.QRect(0, 0, 50, 50) + result.moveBottomLeft(self.rect().bottomLect()) + return result + + def shotRect(self): + gravity = 4.0 + + time = self.timerCount / 40.0 + velocity = self.shootForce + radians = self.shootAngle * 3.14159265 / 180 + + velx = velocity * math.cos(radians) + vely = velocity * math.sin(radians) + x0 = (CannonField.barrelRect.right() + 5) * math.cos(radians) + y0 = (CannonField.barrelRect.right() + 5) * math.sin(radians) + x = x0 + velx * time + y = y0 + vely * time - 0.5 * gravity * time * time + + result = QtCore.QRect(0, 0, 6, 6) + result.moveCenter(QtCore.QPoint(round(x), self.height() - 1 - round(y))) + 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()"), + QtWidgets.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) + + shoot = QtWidgets.QPushButton("&Shoot") + shoot.setFont(QtGui.QFont("Times", 18, QtGui.QFont.Bold)) + + self.connect(shoot, QtCore.SIGNAL("clicked()"), cannonField.shoot) + + topLayout = QtWidgets.QHBoxLayout() + topLayout.addWidget(shoot) + topLayout.addStretch(1) + + leftLayout = QtWidgets.QVBoxLayout() + leftLayout.addWidget(angle) + leftLayout.addWidget(force) + + gridLayout = QtWidgets.QGridLayout() + gridLayout.addWidget(quit, 0, 0) + gridLayout.addLayout(topLayout, 0, 1) + 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_()) |