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authorTimothy Pearson <kb9vqf@pearsoncomputing.net>2011-11-29 00:31:00 -0600
committerTimothy Pearson <kb9vqf@pearsoncomputing.net>2011-11-29 00:31:00 -0600
commitb388516ca2691303a076a0764fd40bf7116fe43d (patch)
tree6f1615d1f12b325f4d1cd9c25d1519303794001a /examples3/tut11.py
downloadpytqt-b388516ca2691303a076a0764fd40bf7116fe43d.tar.gz
pytqt-b388516ca2691303a076a0764fd40bf7116fe43d.zip
Initial import of python-qt3
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diff --git a/examples3/tut11.py b/examples3/tut11.py
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+#!/usr/bin/env python
+
+# Qt tutorial 11.
+
+import sys
+import math
+import qt
+
+
+class LCDRange(qt.QVBox):
+ def __init__(self, parent=None, name=None):
+ qt.QVBox.__init__(self, parent, name)
+
+ lcd = qt.QLCDNumber(2, self, "lcd")
+ self.slider = qt.QSlider(qt.Qt.Horizontal, self, "slider")
+ self.slider.setRange(0, 99)
+ self.slider.setValue(0)
+ self.connect(self.slider, qt.SIGNAL("valueChanged(int)"), lcd, qt.SLOT("display(int)"))
+ self.connect(self.slider, qt.SIGNAL("valueChanged(int)"), self, qt.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(qt.QWidget):
+ def __init__(self, parent=None, name=None):
+ qt.QWidget.__init__(self, parent, name)
+
+ self.ang = 45
+ self.f = 0
+ self.timerCount = 0
+
+ self.autoShootTimer = qt.QTimer(self, "movement handler")
+ self.connect(self.autoShootTimer, qt.SIGNAL("timeout()"), self.moveShot)
+
+ self.shoot_ang = 0
+ self.shoot_f = 0
+
+ self.setPalette(qt.QPalette(qt.QColor(250, 250, 200)))
+
+ self.barrelRect = qt.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(qt.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(qt.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 = qt.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(qt.QRegion(shotR))
+
+ self.repaint(r)
+
+ def paintEvent(self, ev):
+ updateR = ev.rect()
+ p = qt.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.Qt.black)
+ p.setPen(qt.Qt.NoPen)
+ p.drawRect(self.shotRect())
+
+ def paintCannon(self, p):
+ cr = self.cannonRect()
+ pix = qt.QPixmap(cr.size())
+ pix.fill(self, cr.topLeft())
+
+ tmp = qt.QPainter(pix)
+ tmp.setBrush(qt.Qt.blue)
+ tmp.setPen(qt.Qt.NoPen)
+
+ tmp.translate(0, pix.height() - 1)
+ tmp.drawPie(qt.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 = qt.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 = qt.QRect(0, 0, 6, 6)
+ r.moveCenter(qt.QPoint(x, self.height() - 1 - y))
+ return r
+
+ def sizePolicy(self):
+ return qt.QSizePolicy(qt.QSizePolicy.Expanding, qt.QSizePolicy.Expanding)
+
+
+class MyWidget(qt.QWidget):
+ def __init__(self, parent=None, name=None):
+ qt.QWidget.__init__(self, parent, name)
+
+ quit = qt.QPushButton("&Quit", self, "quit")
+ quit.setFont(qt.QFont("Times", 18, qt.QFont.Bold))
+ self.connect(quit, qt.SIGNAL("clicked()"), qt.qApp, qt.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, qt.PYSIGNAL("valueChanged(int)"), self.cannonField.setAngle)
+ self.connect(self.cannonField, qt.PYSIGNAL("angleChanged(int)"), self.angle.setValue)
+
+ self.connect(self.force, qt.PYSIGNAL("valueChanged(int)"), self.cannonField.setForce)
+ self.connect(self.cannonField, qt.PYSIGNAL("forceChanged(int)"), self.force.setValue)
+
+ shoot = qt.QPushButton("&Shoot", self, "shoot")
+ shoot.setFont(qt.QFont("Times", 18, qt.QFont.Bold))
+ self.connect(shoot, qt.SIGNAL("clicked()"), self.cannonField.shoot)
+
+ grid = qt.QGridLayout(self, 2, 2, 10)
+
+ grid.addWidget(quit, 0, 0)
+ grid.addWidget(self.cannonField, 1, 1)
+ grid.setColStretch(1, 10)
+
+ leftBox = qt.QVBoxLayout()
+ grid.addLayout(leftBox, 1, 0)
+ leftBox.addWidget(self.angle)
+ leftBox.addWidget(self.force)
+
+ topBox = qt.QHBoxLayout()
+ grid.addLayout(topBox, 0, 1)
+ topBox.addWidget(shoot)
+ topBox.addStretch(1)
+
+ self.angle.setValue(60)
+ self.force.setValue(25)
+ self.angle.setFocus()
+
+
+qt.QApplication.setColorSpec(qt.QApplication.CustomColor)
+a = qt.QApplication(sys.argv)
+
+w = MyWidget()
+w.setGeometry(100, 100, 500, 355)
+a.setMainWidget(w)
+w.show()
+sys.exit(a.exec_loop())