wxPython/wx/lib/newevent.py

   1 #!/usr/bin/env python
   2 """Easy generation of new events classes and binder functions"""
   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     def Binder(win, func):
  23         win.Connect(-1, -1, evttype, func)
  24
  25     return _Event, Binder
  26
  27
  28
  29 def NewCommandEvent():
  30     """Generate new (CmdEvent, Binder) tuple
  31         e.g. MooCmdEvent, EVT_MOO = NewCommandEvent()
  32     """
  33     evttype = wx.NewEventType()
  34
  35     class _Event(wx.PyCommandEvent):
  36         def __init__(self, id, **kw):
  37             wx.PyCommandEvent.__init__(self, evttype, id)
  38             self.__dict__.update(kw)
  39
  40     def Binder(win, id, func):
  41         win.Connect(id, -1, evttype, func)
  42
  43     return _Event, Binder
  44
  45
  46 #---------------------------------------------------------------------------
  47
  48 def _test():
  49     """A little smoke test"""
  50     from threading import Thread
  51     from time import sleep
  52
  53     MooEvent, EVT_MOO = NewEvent()
  54     GooEvent, EVT_GOO = NewCommandEvent()
  55
  56     DELAY = 0.7
  57
  58     def evt_thr(win):
  59         sleep(DELAY)
  60         wx.PostEvent(win, MooEvent(moo=1))
  61
  62     def cmd_thr(win, id):
  63         sleep(DELAY)
  64         wx.PostEvent(win, GooEvent(id, goo=id))
  65
  66     ID_CMD1 = wx.NewId()
  67     ID_CMD2 = wx.NewId()
  68
  69     class Frame(wx.Frame):
  70         def __init__(self):
  71             wx.Frame.__init__(self, None, -1, "MOO")
  72             sizer = wx.BoxSizer(wx.VERTICAL)
  73             EVT_MOO(self, self.on_moo)
  74             b = wx.Button(self, -1, "Generate MOO")
  75             sizer.Add(b, 1, wx.EXPAND)
  76             wx.EVT_BUTTON(self, b.GetId(), self.on_evt_click)
  77             b = wx.Button(self, ID_CMD1, "Generate GOO with %d" % ID_CMD1)
  78             sizer.Add(b, 1, wx.EXPAND)
  79             wx.EVT_BUTTON(self, ID_CMD1, self.on_cmd_click)
  80             b = wx.Button(self, ID_CMD2, "Generate GOO with %d" % ID_CMD2)
  81             sizer.Add(b, 1, wx.EXPAND)
  82             wx.EVT_BUTTON(self, ID_CMD2, self.on_cmd_click)
  83
  84             EVT_GOO(self, ID_CMD1, self.on_cmd1)
  85             EVT_GOO(self, ID_CMD2, self.on_cmd2)
  86
  87             self.SetSizer(sizer)
  88             self.SetAutoLayout(True)
  89             sizer.Fit(self)
  90
  91         def on_evt_click(self, e):
  92             t = Thread(target=evt_thr, args=(self, ))
  93             t.setDaemon(True)
  94             t.start()
  95
  96         def on_cmd_click(self, e):
  97             t = Thread(target=cmd_thr, args=(self, e.GetId()))
  98             t.setDaemon(True)
  99             t.start()
 100
 101         def show(self, msg, title):
 102             dlg = wx.MessageDialog(self, msg, title, wx.OK)
 103             dlg.ShowModal()
 104             dlg.Destroy()
 105
 106         def on_moo(self, e):
 107             self.show("MOO = %s" % e.moo, "Got Moo")
 108
 109         def on_cmd1(self, e):
 110             self.show("goo = %s" % e.goo, "Got Goo (cmd1)")
 111
 112         def on_cmd2(self, e):
 113             self.show("goo = %s" % e.goo, "Got Goo (cmd2)")
 114
 115
 116     app = wx.PySimpleApp()
 117     f = Frame()
 118     f.Show(True)
 119     app.MainLoop()
 120
 121 if __name__ == "__main__":
 122     _test()