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#!/usr/bin/env python
# TQt tutorial 10.
import sys
from python_tqt import qt
class LCDRange(qt.TQVBox):
def __init__(self, parent=None, name=None):
qt.TQVBox.__init__(self, parent, name)
lcd = qt.TQLCDNumber(2, self, "lcd")
self.slider = qt.TQSlider(qt.TQt.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.TQWidget):
def __init__(self, parent=None, name=None):
qt.TQWidget.__init__(self, parent, name)
self.ang = 45
self.f = 0
self.setPalette(qt.TQPalette(qt.TQColor(250, 250, 200)))
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 paintEvent(self, ev):
if not ev.rect().intersects(self.cannonRect()):
return
cr = self.cannonRect()
pix = qt.TQPixmap(cr.size())
pix.fill(self, cr.topLeft())
p = qt.TQPainter(pix)
p.setBrush(qt.TQt.blue)
p.setPen(qt.TQt.NoPen)
p.translate(0, pix.height() - 1)
p.drawPie(qt.TQRect(-35, -35, 70, 70), 0, 90 * 16)
p.rotate(-self.ang)
p.drawRect(qt.TQRect(33, -4, 15, 8))
p.end()
p.begin(self)
p.drawPixmap(cr.topLeft(), pix)
def cannonRect(self):
r = qt.TQRect(0, 0, 50, 50)
r.moveBottomLeft(self.rect().bottomLeft())
return r
def sizePolicy(self):
return qt.TQSizePolicy(qt.TQSizePolicy.Expanding, qt.TQSizePolicy.Expanding)
class MyWidget(qt.TQWidget):
def __init__(self, parent=None, name=None):
qt.TQWidget.__init__(self, parent, name)
quit = qt.TQPushButton("&Quit", self, "quit")
quit.setFont(qt.TQFont("Times", 18, qt.TQFont.Bold))
self.connect(quit, qt.SIGNAL("clicked()"), qt.tqApp, 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)
grid = qt.TQGridLayout(self, 2, 2, 10)
grid.addWidget(quit, 0, 0)
grid.addWidget(self.cannonField, 1, 1)
grid.setColStretch(1, 10)
leftBox = qt.TQVBoxLayout()
grid.addLayout(leftBox, 1, 0)
leftBox.addWidget(self.angle)
leftBox.addWidget(self.force)
self.angle.setValue(60)
self.force.setValue(25)
self.angle.setFocus()
qt.TQApplication.setColorSpec(qt.TQApplication.CustomColor)
a = qt.TQApplication(sys.argv)
w = MyWidget()
w.setGeometry(100, 100, 500, 355)
a.setMainWidget(w)
w.show()
sys.exit(a.exec_loop())
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