127 lines
3.6 KiB
Python
127 lines
3.6 KiB
Python
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#!/usr/bin/env python
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"""
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This demo attempts to override the C++ MainLoop and implement it
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in Python.
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"""
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import time
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import wx
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#---------------------------------------------------------------------------
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class MyFrame(wx.Frame):
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def __init__(self, parent, id, title):
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wx.Frame.__init__(self, parent, id, title,
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(100, 100), (160, 150))
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self.Bind(wx.EVT_SIZE, self.OnSize)
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self.Bind(wx.EVT_MOVE, self.OnMove)
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self.Bind(wx.EVT_CLOSE, self.OnCloseWindow)
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self.Bind(wx.EVT_IDLE, self.OnIdle)
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self.count = 0
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panel = wx.Panel(self)
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sizer = wx.FlexGridSizer(cols=2, hgap=5, vgap=5)
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self.sizeCtrl = wx.TextCtrl(panel, -1, "", style=wx.TE_READONLY)
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sizer.Add(wx.StaticText(panel, -1, "Size:"))
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sizer.Add(self.sizeCtrl)
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self.posCtrl = wx.TextCtrl(panel, -1, "", style=wx.TE_READONLY)
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sizer.Add(wx.StaticText(panel, -1, "Pos:"))
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sizer.Add(self.posCtrl)
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self.idleCtrl = wx.TextCtrl(panel, -1, "", style=wx.TE_READONLY)
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sizer.Add(wx.StaticText(panel, -1, "Idle:"))
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sizer.Add(self.idleCtrl)
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border = wx.BoxSizer()
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border.Add(sizer, 0, wx.ALL, 20)
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panel.SetSizer(border)
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def OnCloseWindow(self, event):
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app.keepGoing = False
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self.Destroy()
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def OnIdle(self, event):
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self.idleCtrl.SetValue(str(self.count))
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self.count = self.count + 1
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def OnSize(self, event):
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size = event.GetSize()
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self.sizeCtrl.SetValue("%s, %s" % (size.width, size.height))
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event.Skip()
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def OnMove(self, event):
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pos = event.GetPosition()
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self.posCtrl.SetValue("%s, %s" % (pos.x, pos.y))
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#---------------------------------------------------------------------------
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class MyApp(wx.App):
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def MainLoop(self):
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if "wxMac" in wx.PlatformInfo:
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# TODO: Does wxMac implement wxEventLoop yet???
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wx.App.MainLoop()
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else:
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# Create an event loop and make it active. If you are
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# only going to temporarily have a nested event loop then
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# you should get a reference to the old one and set it as
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# the active event loop when you are done with this one...
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evtloop = wx.EventLoop()
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old = wx.EventLoop.GetActive()
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wx.EventLoop.SetActive(evtloop)
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# This outer loop determines when to exit the application,
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# for this example we let the main frame reset this flag
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# when it closes.
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while self.keepGoing:
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# At this point in the outer loop you could do
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# whatever you implemented your own MainLoop for. It
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# should be quick and non-blocking, otherwise your GUI
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# will freeze.
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# call_your_code_here()
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# This inner loop will process any GUI events
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# until there are no more waiting.
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while evtloop.Pending():
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evtloop.Dispatch()
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# Send idle events to idle handlers. You may want to
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# throttle this back a bit somehow so there is not too
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# much CPU time spent in the idle handlers. For this
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# example, I'll just snooze a little...
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time.sleep(0.10)
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self.ProcessIdle()
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wx.EventLoop.SetActive(old)
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def OnInit(self):
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frame = MyFrame(None, -1, "This is a test")
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frame.Show(True)
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self.SetTopWindow(frame)
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self.keepGoing = True
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return True
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app = MyApp(False)
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app.MainLoop()
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