1 files changed, 74 insertions, 0 deletions
diff --git a/python/pyqt/examples3/drawlines.py b/python/pyqt/examples3/drawlines.py
new file mode 100755
index 00000000..3e21db71
--- /dev/null
+++ b/python/pyqt/examples3/drawlines.py
@@ -0,0 +1,74 @@
+#!/usr/bin/env python
+
+import sys, random
+from qt import *
+
+TRUE = 1
+FALSE = 0
+
+MAXPOINTS = 2000;  # maximum number of points
+MAXCOLORS = 40;
+
+#
+# ConnectWidget - draws connected lines
+#
+
+class ConnectWidget(QWidget):
+	def __init__(self):
+		QWidget.__init__(self)
+		self.setEraseColor( Qt.white )                # white background
+		self.count = 0;
+		self.down = FALSE
+		
+		self.points = []
+		self.colors = []
+
+		for i in range(MAXPOINTS):           # init arrays
+			self.points.append(QPoint())
+		for i in range(MAXCOLORS):
+			self.colors.append(QColor( random.randint(0,255), random.randint(0,255), random.randint(0,255) ))
+
+#
+# Handles paint events for the connect widget.
+#
+	def paintEvent(self, pe):
+		paint = QPainter( self )
+		for i in range(self.count-1):               # connect all points
+			for j in range(i+1, self.count):
+				paint.setPen( self.colors[random.randint(0,MAXCOLORS-1)] ) # set random pen color
+				paint.drawLine( self.points[i], self.points[j] )           # draw line
+
+#
+# Handles mouse press events for the connect widget.
+#
+	def mousePressEvent(self, me):
+		self.down = TRUE
+		self.count = 0                                  # start recording points
+		self.erase()                                    # erase widget contents
+
+#
+# Handles mouse release events for the connect widget.
+#
+	def mouseReleaseEvent(self, me ):
+		self.down = FALSE                               # done recording points
+		self.update()                                   # draw the lines
+
+#
+# Handles mouse move events for the connect widget.
+#
+	def mouseMoveEvent(self, me):	
+		if self.down and self.count < MAXPOINTS:
+			paint = QPainter( self )
+			self.points[self.count] = QPoint(me.pos())   # add point
+			paint.drawPoint( me.pos() )          # plot point
+			self.count = self.count+1
+
+#
+# Create and display a ConnectWidget.
+#
+a = QApplication( sys.argv )
+connect = ConnectWidget()
+connect.setCaption( "PyQt Example - Draw lines")
+a.setMainWidget( connect )
+connect.show()
+a.exec_loop()