wxPython/samples/wxPIA_book/Chapter-18/timer.py

   1 import wx
   2 import time
   3
   4 class ClockWindow(wx.Window):
   5     def __init__(self, parent):
   6         wx.Window.__init__(self, parent)
   7         self.Bind(wx.EVT_PAINT, self.OnPaint)
   8         self.timer = wx.Timer(self)
   9         self.Bind(wx.EVT_TIMER, self.OnTimer, self.timer)
  10         self.timer.Start(1000)
  11
  12     def Draw(self, dc):
  13         t = time.localtime(time.time())
  14         st = time.strftime("%I:%M:%S", t)
  15         w, h = self.GetClientSize()
  16         dc.SetBackground(wx.Brush(self.GetBackgroundColour()))
  17         dc.Clear()
  18         dc.SetFont(wx.Font(30, wx.SWISS, wx.NORMAL, wx.NORMAL))
  19         tw, th = dc.GetTextExtent(st)
  20         dc.DrawText(st, (w-tw)/2, (h)/2 - th/2)
  21
  22     def OnTimer(self, evt):
  23         dc = wx.BufferedDC(wx.ClientDC(self))
  24         self.Draw(dc)
  25
  26     def OnPaint(self, evt):
  27         dc = wx.BufferedPaintDC(self)
  28         self.Draw(dc)
  29
  30 class MyFrame(wx.Frame):
  31     def __init__(self):
  32         wx.Frame.__init__(self, None, title="wx.Timer")
  33         ClockWindow(self)
  34
  35
  36 app = wx.PySimpleApp()
  37 frm = MyFrame()
  38 frm.Show()
  39 app.MainLoop()