wxPython/demo/PythonEvents.py

   1 # 11/13/2003 - Jeff Grimmett (grimmtooth@softhome.net)
   2 #
   3 # o Updated for wx namespace
   4 #
   5
   6 import  sys
   7
   8 import  wx
   9
  10 #----------------------------------------------------------------------
  11
  12 # This shows the new 'official' way to do custom events as derived
  13 # from the wxPython 2.5 migration guide.
  14
  15 #######################################################\
  16 #  *** Old and busted ***                              |
  17 #                                                      |
  18 # myEVT_BUTTON_CLICKPOS = wx.NewEventType()            |
  19 #                                                      |
  20 # def EVT_BUTTON_CLICKPOS(win, id, func):              |
  21 #     win.Connect(id, -1, myEVT_BUTTON_CLICKPOS, func) |
  22 #######################################################/
  23
  24 #############################\
  25 #   *** The new Hottness *** |
  26 #############################/
  27 myEVT_BUTTON_CLICKPOS = wx.NewEventType()
  28 EVT_BUTTON_CLICKPOS = wx.PyEventBinder(myEVT_BUTTON_CLICKPOS, 1)
  29
  30 #----------------------------------------------------------------------
  31
  32
  33 class MyEvent(wx.PyCommandEvent):
  34     def __init__(self, evtType, id):
  35         wx.PyCommandEvent.__init__(self, evtType, id)
  36         self.myVal = None
  37
  38     #def __del__(self):
  39     #    print '__del__'
  40     #    wx.PyCommandEvent.__del__(self)
  41
  42     def SetMyVal(self, val):
  43         self.myVal = val
  44
  45     def GetMyVal(self):
  46         return self.myVal
  47
  48
  49 class MyButton(wx.Button):
  50     def __init__(self, parent, id, txt, pos):
  51         wx.Button.__init__(self, parent, id, txt, pos)
  52         self.Bind(wx.EVT_LEFT_DOWN, self.OnLeftDown)
  53
  54     def OnLeftDown(self, event):
  55         pt = event.GetPosition()
  56         evt = MyEvent(myEVT_BUTTON_CLICKPOS, self.GetId())
  57         evt.SetMyVal(pt)
  58         #print id(evt), sys.getrefcount(evt)
  59         self.GetEventHandler().ProcessEvent(evt)
  60         #print id(evt), sys.getrefcount(evt)
  61         event.Skip()
  62
  63
  64
  65 class TestPanel(wx.Panel):
  66     def __init__(self, parent, log):
  67         wx.Panel.__init__(self, parent, -1)
  68         self.log = log
  69
  70         b = MyButton(self, -1, " Click me ", (30,30))
  71         self.Bind(wx.EVT_BUTTON, self.OnClick, id=b.GetId())
  72
  73         # This is our custom event binder created above.
  74         self.Bind(EVT_BUTTON_CLICKPOS, self.OnMyEvent, id=b.GetId())
  75
  76         wx.StaticText(
  77             self, -1, "Please see the Overview and Demo Code for details...",
  78             (30, 80)
  79             )
  80
  81
  82     def OnClick(self, event):
  83         self.log.WriteText("OnClick\n")
  84
  85     def OnMyEvent(self, event):
  86         #print id(event), sys.getrefcount(event)
  87         self.log.WriteText("MyEvent: %s\n" % (event.GetMyVal(), ) )
  88
  89
  90 #----------------------------------------------------------------------
  91
  92 def runTest(frame, nb, log):
  93     win = TestPanel(nb, log)
  94     return win
  95
  96 #----------------------------------------------------------------------
  97
  98
  99 overview = """\
 100 This demo is a contrived example of defining an event class in wxPython and
 101 sending it up the containment hierarchy for processing.
 102
 103 V2.5 note: this demo also shows the new style of creating event binders that
 104 is required if you used the *.Bind() method of setting up event handlers.
 105 """
 106
 107
 108 if __name__ == '__main__':
 109     import sys,os
 110     import run
 111     run.main(['', os.path.basename(sys.argv[0])])
 112