.. _event_handling-pong_qt:

event_handling example code: pong_qt.py
=======================================

[`source code <pong_qt.py>`_]

::

    # For detailed comments on animation and the techniqes used here, see
    # the wiki entry http://www.scipy.org/Cookbook/Matplotlib/Animations
    
    from __future__ import print_function
    
    import matplotlib
    matplotlib.use('QtAgg') # qt3 example
    
    from qt import *
    # Note: color-intensive applications may require a different color allocation
    # strategy.
    QApplication.setColorSpec(QApplication.NormalColor)
    
    TRUE  = 1
    FALSE = 0
    ITERS = 1000
    
    import matplotlib.pyplot as plt
    import time
    import pipong
    
    class BlitQT(QObject):
        def __init__(self):
            QObject.__init__(self, None, "app")
    
            self.ax = plt.subplot(111)
            self.animation = pipong.Game(self.ax)
    
        def timerEvent(self, evt):
           self.animation.draw(evt)
    
    plt.grid() # to ensure proper background restore
    
    app = BlitQT()
    # for profiling
    app.tstart = time.time()
    app.startTimer(10)
    
    plt.show()
    print('FPS:' , app.animation.cnt/(time.time()-app.tstart))
    

Keywords: python, matplotlib, pylab, example, codex (see :ref:`how-to-search-examples`)