You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
146 lines
3.8 KiB
146 lines
3.8 KiB
13 years ago
|
#!/usr/bin/env python
|
||
|
|
||
|
# Qt tutorial 10.
|
||
|
|
||
|
import sys
|
||
|
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.setPalette(QPalette(QColor(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(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 paintEvent(self,ev):
|
||
|
if not ev.rect().intersects(self.cannonRect()):
|
||
|
return
|
||
|
|
||
|
cr = self.cannonRect()
|
||
|
pix = QPixmap(cr.size())
|
||
|
pix.fill(self,cr.topLeft())
|
||
|
|
||
|
p = QPainter(pix)
|
||
|
|
||
|
p.setBrush(Qt.blue)
|
||
|
p.setPen(Qt.NoPen)
|
||
|
|
||
|
p.translate(0,pix.height() - 1)
|
||
|
p.drawPie(QRect(-35,-35,70,70),0,90 * 16)
|
||
|
p.rotate(-self.ang)
|
||
|
p.drawRect(QRect(33,-4,15,8))
|
||
|
p.end()
|
||
|
|
||
|
p.begin(self)
|
||
|
p.drawPixmap(cr.topLeft(),pix)
|
||
|
|
||
|
def cannonRect(self):
|
||
|
r = QRect(0,0,50,50)
|
||
|
r.moveBottomLeft(self.rect().bottomLeft())
|
||
|
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)
|
||
|
|
||
|
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)
|
||
|
|
||
|
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()
|