1 files changed, 96 insertions, 0 deletions
diff --git a/python/pyqt/examples2/tut8.py b/python/pyqt/examples2/tut8.py
new file mode 100755
index 00000000..045a4ef9
--- /dev/null
+++ b/python/pyqt/examples2/tut8.py
@@ -0,0 +1,96 @@
+#!/usr/bin/env python
+
+# Qt tutorial 8.
+
+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.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.emit(PYSIGNAL('angleChanged(int)'),(self.ang,))
+
+    def paintEvent(self,ev):
+        p = QPainter(self)
+        p.drawText(200,200,'Angle = %d' % (self.ang))
+
+    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.cannonField = CannonField(self,'cannonField')
+
+        self.connect(self.angle,PYSIGNAL('valueChanged(int)'),self.cannonField.setAngle)
+        self.connect(self.cannonField,PYSIGNAL('angleChanged(int)'),self.angle.setValue)
+
+        grid = QGridLayout(self,2,2,10)
+
+        grid.addWidget(quit,0,0)
+        grid.addWidget(self.angle,1,0,Qt.AlignTop)
+        grid.addWidget(self.cannonField,1,1)
+        grid.setColStretch(1,10)
+
+        self.angle.setValue(60)
+        self.angle.setFocus()
+
+
+a = QApplication(sys.argv)
+
+w = MyWidget()
+w.setGeometry(100,100,500,355)
+a.setMainWidget(w)
+w.show()
+a.exec_loop()