1 files changed, 97 insertions, 0 deletions
diff --git a/python/pyqt/examples3/tut8.py b/python/pyqt/examples3/tut8.py
new file mode 100755
index 00000000..f7dd1567
--- /dev/null
+++ b/python/pyqt/examples3/tut8.py
@@ -0,0 +1,97 @@
+#!/usr/bin/env python
+
+# Qt tutorial 8.
+
+import sys
+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.setPalette(qt.QPalette(qt.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(qt.PYSIGNAL("angleChanged(int)"), (self.ang, ))
+
+    def paintEvent(self, ev):
+        p = qt.QPainter(self)
+        p.drawText(200, 200, "Angle = %d" % (self.ang))
+
+    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.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)
+
+        grid = qt.QGridLayout(self, 2, 2, 10)
+
+        grid.addWidget(quit, 0, 0)
+        grid.addWidget(self.angle, 1, 0, qt.Qt.AlignTop)
+        grid.addWidget(self.cannonField, 1, 1)
+        grid.setColStretch(1, 10)
+
+        self.angle.setValue(60)
+        self.angle.setFocus()
+
+
+a = qt.QApplication(sys.argv)
+
+w = MyWidget()
+w.setGeometry(100, 100, 500, 355)
+a.setMainWidget(w)
+w.show()
+sys.exit(a.exec_loop())