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Add BitmapFromBuffer demo
[wxWidgets.git] / wxPython / demo / Process.py
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c368d904 1
8fa876ca 2import wx
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3
4#----------------------------------------------------------------------
5
8fa876ca 6class TestPanel(wx.Panel):
c368d904 7 def __init__(self, parent, ID, log):
8fa876ca 8 wx.Panel.__init__(self, parent, ID)
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9 self.log = log
10
11 self.process = None
8fa876ca 12 self.Bind(wx.EVT_IDLE, self.OnIdle)
c368d904 13
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14 # We can either derive from wx.Process and override OnTerminate
15 # or we can let wx.Process send this window an event that is
c368d904 16 # caught in the normal way...
8fa876ca 17 self.Bind(wx.EVT_END_PROCESS, self.OnProcessEnded)
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18
19
20 # Make the controls
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21 prompt = wx.StaticText(self, -1, 'Command line:')
22 self.cmd = wx.TextCtrl(self, -1, 'python -u data/echo.py')
23 self.exBtn = wx.Button(self, -1, 'Execute')
c368d904 24
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25 self.out = wx.TextCtrl(self, -1, '',
26 style=wx.TE_MULTILINE|wx.TE_READONLY|wx.TE_RICH2)
c368d904 27
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28 self.inp = wx.TextCtrl(self, -1, '', style=wx.TE_PROCESS_ENTER)
29 self.sndBtn = wx.Button(self, -1, 'Send')
30 self.termBtn = wx.Button(self, -1, 'Close Stream')
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31 self.inp.Enable(False)
32 self.sndBtn.Enable(False)
33 self.termBtn.Enable(False)
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34
35 # Hook up the events
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36 self.Bind(wx.EVT_BUTTON, self.OnExecuteBtn, self.exBtn)
37 self.Bind(wx.EVT_BUTTON, self.OnSendText, self.sndBtn)
38 self.Bind(wx.EVT_BUTTON, self.OnCloseStream, self.termBtn)
39 self.Bind(wx.EVT_TEXT_ENTER, self.OnSendText, self.inp)
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40
41
42 # Do the layout
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43 box1 = wx.BoxSizer(wx.HORIZONTAL)
44 box1.Add(prompt, 0, wx.ALIGN_CENTER)
45 box1.Add(self.cmd, 1, wx.ALIGN_CENTER|wx.LEFT|wx.RIGHT, 5)
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46 box1.Add(self.exBtn, 0)
47
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48 box2 = wx.BoxSizer(wx.HORIZONTAL)
49 box2.Add(self.inp, 1, wx.ALIGN_CENTER)
50 box2.Add(self.sndBtn, 0, wx.LEFT, 5)
51 box2.Add(self.termBtn, 0, wx.LEFT, 5)
c368d904 52
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53 sizer = wx.BoxSizer(wx.VERTICAL)
54 sizer.Add(box1, 0, wx.EXPAND|wx.ALL, 10)
55 sizer.Add(self.out, 1, wx.EXPAND|wx.ALL, 10)
56 sizer.Add(box2, 0, wx.EXPAND|wx.ALL, 10)
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57
58 self.SetSizer(sizer)
1e4a197e 59 self.SetAutoLayout(True)
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60
61
62 def __del__(self):
63 if self.process is not None:
64 self.process.Detach()
65 self.process.CloseOutput()
66 self.process = None
67
68
69 def OnExecuteBtn(self, evt):
70 cmd = self.cmd.GetValue()
71
8fa876ca 72 self.process = wx.Process(self)
c368d904 73 self.process.Redirect();
8fa876ca 74 pid = wx.Execute(cmd, wx.EXEC_ASYNC, self.process)
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75 self.log.write('OnExecuteBtn: "%s" pid: %s\n' % (cmd, pid))
76
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77 self.inp.Enable(True)
78 self.sndBtn.Enable(True)
79 self.termBtn.Enable(True)
80 self.cmd.Enable(False)
81 self.exBtn.Enable(False)
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82 self.inp.SetFocus()
83
84
85 def OnSendText(self, evt):
86 text = self.inp.GetValue()
87 self.inp.SetValue('')
88 self.log.write('OnSendText: "%s"\n' % text)
89 self.process.GetOutputStream().write(text + '\n')
90 self.inp.SetFocus()
91
92
93 def OnCloseStream(self, evt):
94 self.log.write('OnCloseStream\n')
a541c325 95 #print "b4 CloseOutput"
c368d904 96 self.process.CloseOutput()
a541c325 97 #print "after CloseOutput"
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98
99 def OnIdle(self, evt):
100 if self.process is not None:
101 stream = self.process.GetInputStream()
102
1e4a197e 103 if stream.CanRead():
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104 text = stream.read()
105 self.out.AppendText(text)
106
107
108 def OnProcessEnded(self, evt):
109 self.log.write('OnProcessEnded, pid:%s, exitCode: %s\n' %
110 (evt.GetPid(), evt.GetExitCode()))
111
112 stream = self.process.GetInputStream()
8fa876ca 113
1e4a197e 114 if stream.CanRead():
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115 text = stream.read()
116 self.out.AppendText(text)
117
118 self.process.Destroy()
119 self.process = None
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120 self.inp.Enable(False)
121 self.sndBtn.Enable(False)
122 self.termBtn.Enable(False)
123 self.cmd.Enable(True)
124 self.exBtn.Enable(True)
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125
126
127#----------------------------------------------------------------------
128
129def runTest(frame, nb, log):
130 win = TestPanel(nb, -1, log)
131 return win
132
133
134#----------------------------------------------------------------------
135
136
137overview = """\
138<html><body>
95bfd958 139<h2>wx.Process</h2>
c368d904 140
95bfd958 141wx.Process lets you get notified when an asyncronous child process
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142started by wxExecute terminates, and also to get input/output streams
143for the child process's stdout, stderr and stdin.
144
145<p>
146This demo launches a simple python script that echos back on stdout
147lines that it reads from stdin. You can send text to the echo
148process' stdin by typing in the lower textctrl and clicking Send.
149
150<p>
151Clicking the Close Stream button will close the demo's end of the
152stdin pipe to the child process. In our case that will cause the
153child process to exit its main loop.
154
155</body><html>
156"""
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157
158
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159if __name__ == '__main__':
160 import sys,os
161 import run
8eca4fef 162 run.main(['', os.path.basename(sys.argv[0])] + sys.argv[1:])