wxPython/wx/lib/newevent.py

   1 """Easy generation of new events classes and binder objects"""
   2
   3 __author__ = "Miki Tebeka <tebeka@cs.bgu.ac.il>"
   4
   5 import wx
   6
   7 #---------------------------------------------------------------------------
   8
   9 def NewEvent():
  10     """Generate new (Event, Binder) tuple
  11         e.g. MooEvent, EVT_MOO = NewEvent()
  12     """
  13     evttype = wx.NewEventType()
  14
  15     class _Event(wx.PyEvent):
  16         def __init__(self, **kw):
  17             wx.PyEvent.__init__(self)
  18             self.SetEventType(evttype)
  19             self.__dict__.update(kw)
  20
  21     return _Event, wx.PyEventBinder(evttype)
  22
  23
  24
  25 def NewCommandEvent():
  26     """Generate new (CmdEvent, Binder) tuple
  27         e.g. MooCmdEvent, EVT_MOO = NewCommandEvent()
  28     """
  29     evttype = wx.NewEventType()
  30
  31     class _Event(wx.PyCommandEvent):
  32         def __init__(self, id, **kw):
  33             wx.PyCommandEvent.__init__(self, evttype, id)
  34             self.__dict__.update(kw)
  35
  36     return _Event, wx.PyEventBinder(evttype, 1)
  37
  38
  39 #---------------------------------------------------------------------------
  40
  41 def _test():
  42     """A little smoke test"""
  43     from threading import Thread
  44     from time import sleep
  45
  46     MooEvent, EVT_MOO = NewEvent()
  47     GooEvent, EVT_GOO = NewCommandEvent()
  48
  49     DELAY = 0.7
  50
  51     def evt_thr(win):
  52         sleep(DELAY)
  53         wx.PostEvent(win, MooEvent(moo=1))
  54
  55     def cmd_thr(win, id):
  56         sleep(DELAY)
  57         wx.PostEvent(win, GooEvent(id, goo=id))
  58
  59     ID_CMD1 = wx.NewId()
  60     ID_CMD2 = wx.NewId()
  61
  62     class Frame(wx.Frame):
  63         def __init__(self):
  64             wx.Frame.__init__(self, None, -1, "MOO")
  65             sizer = wx.BoxSizer(wx.VERTICAL)
  66             EVT_MOO(self, self.on_moo)
  67             b = wx.Button(self, -1, "Generate MOO")
  68             sizer.Add(b, 1, wx.EXPAND)
  69             wx.EVT_BUTTON(self, b.GetId(), self.on_evt_click)
  70             b = wx.Button(self, ID_CMD1, "Generate GOO with %d" % ID_CMD1)
  71             sizer.Add(b, 1, wx.EXPAND)
  72             wx.EVT_BUTTON(self, ID_CMD1, self.on_cmd_click)
  73             b = wx.Button(self, ID_CMD2, "Generate GOO with %d" % ID_CMD2)
  74             sizer.Add(b, 1, wx.EXPAND)
  75             wx.EVT_BUTTON(self, ID_CMD2, self.on_cmd_click)
  76
  77             EVT_GOO(self, ID_CMD1, self.on_cmd1)
  78             EVT_GOO(self, ID_CMD2, self.on_cmd2)
  79
  80             self.SetSizer(sizer)
  81             self.SetAutoLayout(True)
  82             sizer.Fit(self)
  83
  84         def on_evt_click(self, e):
  85             t = Thread(target=evt_thr, args=(self, ))
  86             t.setDaemon(True)
  87             t.start()
  88
  89         def on_cmd_click(self, e):
  90             t = Thread(target=cmd_thr, args=(self, e.GetId()))
  91             t.setDaemon(True)
  92             t.start()
  93
  94         def show(self, msg, title):
  95             dlg = wx.MessageDialog(self, msg, title, wx.OK)
  96             dlg.ShowModal()
  97             dlg.Destroy()
  98
  99         def on_moo(self, e):
 100             self.show("MOO = %s" % e.moo, "Got Moo")
 101
 102         def on_cmd1(self, e):
 103             self.show("goo = %s" % e.goo, "Got Goo (cmd1)")
 104
 105         def on_cmd2(self, e):
 106             self.show("goo = %s" % e.goo, "Got Goo (cmd2)")
 107
 108
 109     app = wx.PySimpleApp()
 110     f = Frame()
 111     f.Show(True)
 112     app.MainLoop()
 113
 114 if __name__ == "__main__":
 115     _test()