wxPython/wx/lib/newevent.py

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