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fixed the width of the (week day as number) field, should be 1, not 2
[wxWidgets.git] / wxPython / tests / test8.py
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1# Thread testing example. Harm van der Heijden, March 26 1999.
2#
3# Rule One in threading: make sure only one thread interacts with the
4# user interface. See the wxTextCtrlQueue class for an example of how
5# to accomplish this
6
7import thread
8import time
9from whrandom import random
10
11from wxPython.wx import *
12
13# Set this to zero to prevent entering the wxApp mainloop
14# (for testing whether threads work at all in the absense of wxWindows)
15use_wxpython = 1
16
17# write a message to stdout every second
18def DoThread(mesg):
19 while 1:
20 sleeptime = (random() * 3) + 0.5
21 print "Hello from %s (%1.3f)" % (mesg, sleeptime)
22 time.sleep(sleeptime)
23
24# the same, but write it to a textctrl.
25def DoTextCtrlThread(text, mesg):
26 while 1:
27 sleeptime = (random() * 3) + 0.5
28 text.WriteText("Hello from %s (%1.3f)\n" % (mesg, sleeptime))
29 time.sleep(sleeptime)
30
31# A very simple queue for textctrls.
32# Nice demonstration of the power of OO programming too (at least I think so!)
33# WriteText puts text in the queue, rather than writing it immediately.
34# The main (UI) thread must call Flush to force output. (see MyFrame::OnIdle)
35class wxTextCtrlQueue(wxTextCtrl):
36 def __init__(self, parent, id, value, pos, size, flags):
37 wxTextCtrl.__init__(self,parent, id, value, pos, size, flags)
38 self.queue = []
39 def WriteText(self, value):
40 self.queue.append(value)
41 def Flush(self):
42 queue = self.queue
43 self.queue = []
44 for value in queue:
45 wxTextCtrl.WriteText(self,value)
46
47# MyFrame and MyApp are very simple classes to test python threads in
48# wxPython.
49class MyFrame(wxFrame):
50 def __init__(self):
51 wxFrame.__init__(self, NULL, -1, "test threads", wxDefaultPosition, wxSize(300,200))
52 self.text = wxTextCtrlQueue(self, -1, "thread output\n", wxDefaultPosition, wxDefaultSize, wxTE_MULTILINE)
53 menu = wxMenu()
54 menu.Append(1001, "Start thread")
55 self.cnt = 0;
56 menubar = wxMenuBar()
57 menubar.Append(menu, "Action")
58 self.SetMenuBar(menubar)
59 EVT_MENU(self, 1001, self.StartThread)
60 def StartThread(self, event):
61 self.cnt = self.cnt + 1
62 thread.start_new_thread(DoTextCtrlThread, (self.text, "thread %d" % self.cnt))
63 def OnIdle(self, event):
64 self.text.Flush()
65
66class MyApp(wxApp):
67 def OnInit(self):
68 frame = MyFrame()
69 self.SetTopWindow(frame)
70 frame.Show(TRUE)
71 return TRUE
72
73# Start two threads that print a message every second
74thread.start_new_thread(DoThread, ("thread A",))
75thread.start_new_thread(DoThread, ("thread B",))
76
77# if using wxpython, open a frame. Otherwise, just hang in while 1
78if use_wxpython:
79 app = MyApp(0)
80 app.MainLoop()
81else:
82 while 1:
83 print "main loop"
84 time.sleep(4)
85print 'done!'