PyQt/GraphicsView_-_SimpleAnimation

This wiki is in the process of being archived due to lack of usage and the resources necessary to serve it — predominately to bots, crawlers, and LLM companies. Edits are discouraged.
Pages are preserved as they were at the time of archival. For current information, please visit python.org.
If a change to this archive is absolutely needed, requests can be made via the infrastructure@python.org mailing list.

Graphics View - Simple Animation

The example below presents how to use QGraphicsView along with QGraphicsItem, QGraphicsItemAnimation and QTimeLine to construct a very simple animation. If you have any questions please do not hesitate to ask me directly.

   1 
   2 
   3 import sys
   4 from PyQt4 import QtGui, QtCore
   5 
   6 class MyView(QtGui.QGraphicsView):
   7     def __init__(self):
   8         QtGui.QGraphicsView.__init__(self)
   9 
  10         self.scene = QtGui.QGraphicsScene(self)
  11         self.item = QtGui.QGraphicsEllipseItem(-20, -10, 40, 20)
  12         self.scene.addItem(self.item)
  13         self.setScene(self.scene)
  14 
  15         
  16         
  17         self.tl = QtCore.QTimeLine(1000)
  18         self.tl.setFrameRange(0, 100)
  19         self.a = QtGui.QGraphicsItemAnimation()
  20         self.a.setItem(self.item)
  21         self.a.setTimeLine(self.tl)
  22 
  23         
  24         
  25         
  26         self.a.setPosAt(0, QtCore.QPointF(0, -10))
  27         self.a.setRotationAt(1, 360)
  28 
  29         self.tl.start()
  30 
  31 if __name__ == '__main__':
  32     app = QtGui.QApplication(sys.argv)
  33     view = MyView()
  34     view.show()
  35     sys.exit(app.exec_())

(WinXP, Py2.6, PyQt4.4.4)