#!/usr/bin/env python ############################################################################# ## ## 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." ## ## $QT_END_LICENSE$ ## ############################################################################# # 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_())