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Diffstat (limited to 'python/pyqt/examples2/tut11.py')
| -rwxr-xr-x | python/pyqt/examples2/tut11.py | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/python/pyqt/examples2/tut11.py b/python/pyqt/examples2/tut11.py new file mode 100755 index 00000000..32fb436d --- /dev/null +++ b/python/pyqt/examples2/tut11.py @@ -0,0 +1,213 @@ +#!/usr/bin/env python + +# Qt tutorial 11. + +import sys +import math +from qt import * + + +class LCDRange(QVBox): + def __init__(self,parent=None,name=None): + QVBox.__init__(self,parent,name) + + lcd = QLCDNumber(2,self,'lcd') + self.slider = QSlider(Qt.Horizontal,self,'slider') + self.slider.setRange(0,99) + self.slider.setValue(0) + self.connect(self.slider,SIGNAL('valueChanged(int)'),lcd,SLOT('display(int)')) + self.connect(self.slider,SIGNAL('valueChanged(int)'),self,PYSIGNAL('valueChanged(int)')) + + self.setFocusProxy(self.slider) + + def value(self): + return self.slider.value() + + def setValue(self,value): + self.slider.setValue(value) + + def setRange(self,minVal,maxVal): + if minVal < 0 or maxVal > 99 or minVal > maxVal: + raise ValueError, 'LCDRange.setRange(): invalid range' + self.slider.setRange(minVal,maxVal) + + +class CannonField(QWidget): + def __init__(self,parent=None,name=None): + QWidget.__init__(self,parent,name) + + self.ang = 45 + self.f = 0 + self.timerCount = 0 + + self.autoShootTimer = QTimer(self,'movement handler') + self.connect(self.autoShootTimer,SIGNAL('timeout()'),self.moveShot) + + self.shoot_ang = 0 + self.shoot_f = 0 + + self.setPalette(QPalette(QColor(250,250,200))) + + self.barrelRect = QRect(33,-4,15,8) + + def angle(self): + return self.ang + + def setAngle(self,degrees): + if degrees < 5: + degrees = 5 + if degrees > 70: + degrees = 70 + if self.ang == degrees: + return + self.ang = degrees + self.repaint(self.cannonRect(),0) + self.emit(PYSIGNAL('angleChanged(int)'),(self.ang,)) + + def force(self): + return self.f + + def setForce(self,newton): + if newton < 0: + newton = 0 + if self.f == newton: + return + self.f = newton + self.emit(PYSIGNAL('forceChanged(int)'),(self.f,)) + + def shoot(self): + if self.autoShootTimer.isActive(): + return + + self.timerCount = 0 + self.shoot_ang = self.ang + self.shoot_f = self.f + self.autoShootTimer.start(50) + + def moveShot(self): + r = QRegion(self.shotRect()) + self.timerCount = self.timerCount + 1 + + shotR = self.shotRect() + + if shotR.x() > self.width() or shotR.y() > self.height(): + self.autoShootTimer.stop() + else: + r = r.unite(QRegion(shotR)) + + self.repaint(r) + + def paintEvent(self,ev): + updateR = ev.rect() + p = QPainter(self) + + if updateR.intersects(self.cannonRect()): + self.paintCannon(p) + + if self.autoShootTimer.isActive() and updateR.intersects(self.shotRect()): + self.paintShot(p) + + def paintShot(self,p): + p.setBrush(Qt.black) + p.setPen(Qt.NoPen) + p.drawRect(self.shotRect()) + + def paintCannon(self,p): + cr = self.cannonRect() + pix = QPixmap(cr.size()) + pix.fill(self,cr.topLeft()) + + tmp = QPainter(pix) + tmp.setBrush(Qt.blue) + tmp.setPen(Qt.NoPen) + + tmp.translate(0,pix.height() - 1) + tmp.drawPie(QRect(-35,-35,70,70),0,90 * 16) + tmp.rotate(-self.ang) + tmp.drawRect(self.barrelRect) + tmp.end() + + p.drawPixmap(cr.topLeft(),pix) + + def cannonRect(self): + r = QRect(0,0,50,50) + r.moveBottomLeft(self.rect().bottomLeft()) + return r + + def shotRect(self): + gravity = 4.0 + + time = self.timerCount / 4.0 + velocity = self.shoot_f + radians = self.shoot_ang * 3.14159265 / 180 + + velx = velocity * math.cos(radians) + vely = velocity * math.sin(radians) + x0 = (self.barrelRect.right() + 5) * math.cos(radians) + y0 = (self.barrelRect.right() + 5) * math.sin(radians) + x = x0 + velx * time + y = y0 + vely * time - 0.5 * gravity * time * time + + r = QRect(0,0,6,6) + r.moveCenter(QPoint(x,self.height() - 1 - y)) + return r + + def sizePolicy(self): + return QSizePolicy(QSizePolicy.Expanding,QSizePolicy.Expanding) + + +class MyWidget(QWidget): + def __init__(self,parent=None,name=None): + QWidget.__init__(self,parent,name) + + quit = QPushButton('&Quit',self,'quit') + quit.setFont(QFont('Times',18,QFont.Bold)) + self.connect(quit,SIGNAL('clicked()'),qApp,SLOT('quit()')) + + self.angle = LCDRange(self,'angle') + self.angle.setRange(5,70) + + self.force = LCDRange(self,'force') + self.force.setRange(10,50) + + self.cannonField = CannonField(self,'cannonField') + + self.connect(self.angle,PYSIGNAL('valueChanged(int)'),self.cannonField.setAngle) + self.connect(self.cannonField,PYSIGNAL('angleChanged(int)'),self.angle.setValue) + + self.connect(self.force,PYSIGNAL('valueChanged(int)'),self.cannonField.setForce) + self.connect(self.cannonField,PYSIGNAL('forceChanged(int)'),self.force.setValue) + + shoot = QPushButton('&Shoot',self,'shoot') + shoot.setFont(QFont('Times',18,QFont.Bold)) + self.connect(shoot,SIGNAL('clicked()'),self.cannonField.shoot) + + grid = QGridLayout(self,2,2,10) + + grid.addWidget(quit,0,0) + grid.addWidget(self.cannonField,1,1) + grid.setColStretch(1,10) + + leftBox = QVBoxLayout() + grid.addLayout(leftBox,1,0) + leftBox.addWidget(self.angle) + leftBox.addWidget(self.force) + + topBox = QHBoxLayout() + grid.addLayout(topBox,0,1) + topBox.addWidget(shoot) + topBox.addStretch(1) + + self.angle.setValue(60) + self.force.setValue(25) + self.angle.setFocus() + + +QApplication.setColorSpec(QApplication.CustomColor) +a = QApplication(sys.argv) + +w = MyWidget() +w.setGeometry(100,100,500,355) +a.setMainWidget(w) +w.show() +a.exec_loop() |