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@@ -1,233 +1,286 b'' | |||||
1 | #!/usr/bin/env python |
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1 | #!/usr/bin/env python | |
2 | # encoding: utf-8 |
|
2 | # encoding: utf-8 | |
3 | """ |
|
3 | """ | |
4 | Inputhook management for GUI event loop integration. |
|
4 | Inputhook management for GUI event loop integration. | |
5 | """ |
|
5 | """ | |
6 |
|
6 | |||
7 | #----------------------------------------------------------------------------- |
|
7 | #----------------------------------------------------------------------------- | |
8 | # Copyright (C) 2008-2009 The IPython Development Team |
|
8 | # Copyright (C) 2008-2009 The IPython Development Team | |
9 | # |
|
9 | # | |
10 | # Distributed under the terms of the BSD License. The full license is in |
|
10 | # Distributed under the terms of the BSD License. The full license is in | |
11 | # the file COPYING, distributed as part of this software. |
|
11 | # the file COPYING, distributed as part of this software. | |
12 | #----------------------------------------------------------------------------- |
|
12 | #----------------------------------------------------------------------------- | |
13 |
|
13 | |||
14 | #----------------------------------------------------------------------------- |
|
14 | #----------------------------------------------------------------------------- | |
15 | # Imports |
|
15 | # Imports | |
16 | #----------------------------------------------------------------------------- |
|
16 | #----------------------------------------------------------------------------- | |
17 |
|
17 | |||
18 | import ctypes |
|
18 | import ctypes | |
19 | import sys |
|
19 | import sys | |
20 |
|
20 | |||
21 | #----------------------------------------------------------------------------- |
|
21 | #----------------------------------------------------------------------------- | |
22 | # Code |
|
22 | # Code | |
23 | #----------------------------------------------------------------------------- |
|
23 | #----------------------------------------------------------------------------- | |
24 |
|
24 | |||
|
25 | def _dummy_mainloop(*args, **kw): | |||
|
26 | pass | |||
|
27 | ||||
25 |
|
28 | |||
26 | class InputHookManager(object): |
|
29 | class InputHookManager(object): | |
27 | """Manage PyOS_InputHook for different GUI toolkits. |
|
30 | """Manage PyOS_InputHook for different GUI toolkits. | |
28 |
|
31 | |||
29 | This class installs various hooks under ``PyOSInputHook`` to handle |
|
32 | This class installs various hooks under ``PyOSInputHook`` to handle | |
30 | GUI event loop integration. |
|
33 | GUI event loop integration. | |
31 | """ |
|
34 | """ | |
32 |
|
35 | |||
33 | def __init__(self): |
|
36 | def __init__(self): | |
34 | self.PYFUNC = ctypes.PYFUNCTYPE(ctypes.c_int) |
|
37 | self.PYFUNC = ctypes.PYFUNCTYPE(ctypes.c_int) | |
|
38 | self._apps = {} | |||
35 | self._reset() |
|
39 | self._reset() | |
36 |
|
40 | |||
37 | def _reset(self): |
|
41 | def _reset(self): | |
38 | self._callback_pyfunctype = None |
|
42 | self._callback_pyfunctype = None | |
39 | self._callback = None |
|
43 | self._callback = None | |
40 | self._installed = False |
|
44 | self._installed = False | |
41 | self._current_gui = None |
|
45 | self._current_gui = None | |
42 |
|
46 | |||
|
47 | def _hijack_wx(self): | |||
|
48 | import wx | |||
|
49 | if hasattr(wx, '_core_'): core = getattr(wx, '_core_') | |||
|
50 | elif hasattr(wx, '_core'): core = getattr(wx, '_core') | |||
|
51 | else: raise AttributeError('Could not find wx core module') | |||
|
52 | orig_mainloop = core.PyApp_MainLoop | |||
|
53 | core.PyApp_MainLoop = _dummy_mainloop | |||
|
54 | return orig_mainloop | |||
|
55 | ||||
|
56 | def _hijack_qt4(self): | |||
|
57 | from PyQt4 import QtGui, QtCore | |||
|
58 | orig_mainloop = QtGui.qApp.exec_ | |||
|
59 | QtGui.qApp.exec_ = _dummy_mainloop | |||
|
60 | QtGui.QApplication.exec_ = _dummy_mainloop | |||
|
61 | QtCore.QCoreApplication.exec_ = _dummy_mainloop | |||
|
62 | return orig_mainloop | |||
|
63 | ||||
|
64 | def _hijack_gtk(self): | |||
|
65 | import gtk | |||
|
66 | orig_mainloop = gtk.main | |||
|
67 | gtk.mainloop = _dummy_mainloop | |||
|
68 | gtk.main = _dummy_mainloop | |||
|
69 | return orig_mainloop | |||
|
70 | ||||
|
71 | def _hijack_tk(self): | |||
|
72 | import Tkinter | |||
|
73 | Tkinter.Misc.mainloop = _dummy_mainloop | |||
|
74 | Tkinter.mainloop = _dummy_mainloop | |||
|
75 | ||||
43 | def get_pyos_inputhook(self): |
|
76 | def get_pyos_inputhook(self): | |
44 | """Return the current PyOS_InputHook as a ctypes.c_void_p. |
|
77 | """Return the current PyOS_InputHook as a ctypes.c_void_p. | |
45 | """ |
|
78 | """ | |
46 | return ctypes.c_void_p.in_dll(ctypes.pythonapi,"PyOS_InputHook") |
|
79 | return ctypes.c_void_p.in_dll(ctypes.pythonapi,"PyOS_InputHook") | |
47 |
|
80 | |||
48 | def get_pyos_inputhook_as_func(self): |
|
81 | def get_pyos_inputhook_as_func(self): | |
49 | """Return the current PyOS_InputHook as a ctypes.PYFUNCYPE. |
|
82 | """Return the current PyOS_InputHook as a ctypes.PYFUNCYPE. | |
50 | """ |
|
83 | """ | |
51 | return self.PYFUNC.in_dll(ctypes.pythonapi,"PyOS_InputHook") |
|
84 | return self.PYFUNC.in_dll(ctypes.pythonapi,"PyOS_InputHook") | |
52 |
|
85 | |||
53 | def set_inputhook(self, callback): |
|
86 | def set_inputhook(self, callback): | |
54 | """Set PyOS_InputHook to callback and return the previous one. |
|
87 | """Set PyOS_InputHook to callback and return the previous one. | |
55 | """ |
|
88 | """ | |
56 | self._callback = callback |
|
89 | self._callback = callback | |
57 | self._callback_pyfunctype = self.PYFUNC(callback) |
|
90 | self._callback_pyfunctype = self.PYFUNC(callback) | |
58 | pyos_inputhook_ptr = self.get_pyos_inputhook() |
|
91 | pyos_inputhook_ptr = self.get_pyos_inputhook() | |
59 | original = self.get_pyos_inputhook_as_func() |
|
92 | original = self.get_pyos_inputhook_as_func() | |
60 | pyos_inputhook_ptr.value = \ |
|
93 | pyos_inputhook_ptr.value = \ | |
61 | ctypes.cast(self._callback_pyfunctype, ctypes.c_void_p).value |
|
94 | ctypes.cast(self._callback_pyfunctype, ctypes.c_void_p).value | |
62 | self._installed = True |
|
95 | self._installed = True | |
63 | return original |
|
96 | return original | |
64 |
|
97 | |||
65 | def clear_inputhook(self): |
|
98 | def clear_inputhook(self): | |
66 | """Set PyOS_InputHook to NULL and return the previous one. |
|
99 | """Set PyOS_InputHook to NULL and return the previous one. | |
67 | """ |
|
100 | """ | |
68 | pyos_inputhook_ptr = self.get_pyos_inputhook() |
|
101 | pyos_inputhook_ptr = self.get_pyos_inputhook() | |
69 | original = self.get_pyos_inputhook_as_func() |
|
102 | original = self.get_pyos_inputhook_as_func() | |
70 | pyos_inputhook_ptr.value = ctypes.c_void_p(None).value |
|
103 | pyos_inputhook_ptr.value = ctypes.c_void_p(None).value | |
71 | self._reset() |
|
104 | self._reset() | |
72 | return original |
|
105 | return original | |
73 |
|
106 | |||
|
107 | def clear_app_refs(self, gui=None): | |||
|
108 | """Clear IPython's internal reference to an application instance. | |||
|
109 | ||||
|
110 | Parameters | |||
|
111 | ---------- | |||
|
112 | gui : None or str | |||
|
113 | If None, clear all app references. If ('wx', 'qt4') clear | |||
|
114 | the app for that toolkit. References are not held for gtk or tk | |||
|
115 | as those toolkits don't have the notion of an app. | |||
|
116 | """ | |||
|
117 | if gui is None: | |||
|
118 | self._apps = {} | |||
|
119 | elif self._apps.has_key(gui): | |||
|
120 | del self._apps[gui] | |||
|
121 | ||||
74 | def enable_wx(self, app=False): |
|
122 | def enable_wx(self, app=False): | |
75 | """Enable event loop integration with wxPython. |
|
123 | """Enable event loop integration with wxPython. | |
76 |
|
124 | |||
77 | Parameters |
|
125 | Parameters | |
78 | ---------- |
|
126 | ---------- | |
79 | app : bool |
|
127 | app : bool | |
80 | Create a running application object or not. |
|
128 | Create a running application object or not. | |
81 |
|
129 | |||
82 | Notes |
|
130 | Notes | |
83 | ----- |
|
131 | ----- | |
84 | This methods sets the PyOS_InputHook for wxPython, which allows |
|
132 | This methods sets the PyOS_InputHook for wxPython, which allows | |
85 | the wxPython to integrate with terminal based applications like |
|
133 | the wxPython to integrate with terminal based applications like | |
86 | IPython. |
|
134 | IPython. | |
87 |
|
135 | |||
88 | Once this has been called, you can use wx interactively by doing:: |
|
136 | Once this has been called, you can use wx interactively by doing:: | |
89 |
|
137 | |||
90 | >>> import wx |
|
138 | >>> import wx | |
91 | >>> app = wx.App(redirect=False, clearSigInt=False) |
|
139 | >>> app = wx.App(redirect=False, clearSigInt=False) | |
92 |
|
140 | |||
93 | Both options this constructor are important for things to work |
|
141 | Both options this constructor are important for things to work | |
94 | properly in an interactive context. |
|
142 | properly in an interactive context. | |
95 |
|
143 | |||
96 | But, *don't start the event loop*. That is handled automatically by |
|
144 | But, *don't start the event loop*. That is handled automatically by | |
97 | PyOS_InputHook. |
|
145 | PyOS_InputHook. | |
98 | """ |
|
146 | """ | |
99 | from IPython.lib.inputhookwx import inputhook_wx |
|
147 | from IPython.lib.inputhookwx import inputhook_wx | |
100 | self.set_inputhook(inputhook_wx) |
|
148 | self.set_inputhook(inputhook_wx) | |
101 | self._current_gui = 'wx' |
|
149 | self._current_gui = 'wx' | |
|
150 | self._hijack_wx() | |||
102 | if app: |
|
151 | if app: | |
103 | import wx |
|
152 | import wx | |
|
153 | app = wx.GetApp() | |||
|
154 | if app is None: | |||
104 | app = wx.App(redirect=False, clearSigInt=False) |
|
155 | app = wx.App(redirect=False, clearSigInt=False) | |
105 | # The import of wx on Linux sets the handler for signal.SIGINT |
|
156 | self._apps['wx'] = app | |
106 | # to 0. This is a bug in wx or gtk. We fix by just setting it |
|
|||
107 | # back to the Python default. |
|
|||
108 | import signal |
|
|||
109 | if not callable(signal.getsignal(signal.SIGINT)): |
|
|||
110 | signal.signal(signal.SIGINT, signal.default_int_handler) |
|
|||
111 | return app |
|
157 | return app | |
112 |
|
158 | |||
113 | def disable_wx(self): |
|
159 | def disable_wx(self): | |
114 | """Disable event loop integration with wxPython. |
|
160 | """Disable event loop integration with wxPython. | |
115 |
|
161 | |||
116 | This merely sets PyOS_InputHook to NULL. |
|
162 | This merely sets PyOS_InputHook to NULL. | |
117 | """ |
|
163 | """ | |
118 | self.clear_inputhook() |
|
164 | self.clear_inputhook() | |
119 |
|
165 | |||
120 | def enable_qt4(self, app=False): |
|
166 | def enable_qt4(self, app=False): | |
121 | """Enable event loop integration with PyQt4. |
|
167 | """Enable event loop integration with PyQt4. | |
122 |
|
168 | |||
123 | Parameters |
|
169 | Parameters | |
124 | ---------- |
|
170 | ---------- | |
125 | app : bool |
|
171 | app : bool | |
126 | Create a running application object or not. |
|
172 | Create a running application object or not. | |
127 |
|
173 | |||
128 | Notes |
|
174 | Notes | |
129 | ----- |
|
175 | ----- | |
130 | This methods sets the PyOS_InputHook for wxPython, which allows |
|
176 | This methods sets the PyOS_InputHook for wxPython, which allows | |
131 | the PyQt4 to integrate with terminal based applications like |
|
177 | the PyQt4 to integrate with terminal based applications like | |
132 | IPython. |
|
178 | IPython. | |
133 |
|
179 | |||
134 | Once this has been called, you can simply create a QApplication and |
|
180 | Once this has been called, you can simply create a QApplication and | |
135 | use it. But, *don't start the event loop*. That is handled |
|
181 | use it. But, *don't start the event loop*. That is handled | |
136 | automatically by PyOS_InputHook. |
|
182 | automatically by PyOS_InputHook. | |
137 | """ |
|
183 | """ | |
138 | from PyQt4 import QtCore |
|
184 | from PyQt4 import QtCore | |
139 | # PyQt4 has had this since 4.3.1. In version 4.2, PyOS_InputHook |
|
185 | # PyQt4 has had this since 4.3.1. In version 4.2, PyOS_InputHook | |
140 | # was set when QtCore was imported, but if it ever got removed, |
|
186 | # was set when QtCore was imported, but if it ever got removed, | |
141 | # you couldn't reset it. For earlier versions we can |
|
187 | # you couldn't reset it. For earlier versions we can | |
142 | # probably implement a ctypes version. |
|
188 | # probably implement a ctypes version. | |
143 | try: |
|
189 | try: | |
144 | QtCore.pyqtRestoreInputHook() |
|
190 | QtCore.pyqtRestoreInputHook() | |
145 | except AttributeError: |
|
191 | except AttributeError: | |
146 | pass |
|
192 | pass | |
147 | self._current_gui = 'qt4' |
|
193 | self._current_gui = 'qt4' | |
|
194 | self._hijack_qt4() | |||
148 | if app: |
|
195 | if app: | |
149 | from PyQt4 import QtGui |
|
196 | from PyQt4 import QtGui | |
|
197 | app = QtGui.QApplication.instance() | |||
|
198 | if app is None: | |||
150 | app = QtGui.QApplication(sys.argv) |
|
199 | app = QtGui.QApplication(sys.argv) | |
|
200 | self._apps['qt4'] = app | |||
151 | return app |
|
201 | return app | |
152 |
|
202 | |||
153 | def disable_qt4(self): |
|
203 | def disable_qt4(self): | |
154 | """Disable event loop integration with PyQt4. |
|
204 | """Disable event loop integration with PyQt4. | |
155 |
|
205 | |||
156 | This merely sets PyOS_InputHook to NULL. |
|
206 | This merely sets PyOS_InputHook to NULL. | |
157 | """ |
|
207 | """ | |
158 | self.clear_inputhook() |
|
208 | self.clear_inputhook() | |
159 |
|
209 | |||
160 | def enable_gtk(self, app=False): |
|
210 | def enable_gtk(self, app=False): | |
161 | """Enable event loop integration with PyGTK. |
|
211 | """Enable event loop integration with PyGTK. | |
162 |
|
212 | |||
163 | Parameters |
|
213 | Parameters | |
164 | ---------- |
|
214 | ---------- | |
165 | app : bool |
|
215 | app : bool | |
166 | Create a running application object or not. |
|
216 | Create a running application object or not. | |
167 |
|
217 | |||
168 | Notes |
|
218 | Notes | |
169 | ----- |
|
219 | ----- | |
170 | This methods sets the PyOS_InputHook for PyGTK, which allows |
|
220 | This methods sets the PyOS_InputHook for PyGTK, which allows | |
171 | the PyGTK to integrate with terminal based applications like |
|
221 | the PyGTK to integrate with terminal based applications like | |
172 | IPython. |
|
222 | IPython. | |
173 |
|
223 | |||
174 | Once this has been called, you can simple create PyGTK objects and |
|
224 | Once this has been called, you can simple create PyGTK objects and | |
175 | use them. But, *don't start the event loop*. That is handled |
|
225 | use them. But, *don't start the event loop*. That is handled | |
176 | automatically by PyOS_InputHook. |
|
226 | automatically by PyOS_InputHook. | |
177 | """ |
|
227 | """ | |
178 | import gtk |
|
228 | import gtk | |
179 | try: |
|
229 | try: | |
180 | gtk.set_interactive(True) |
|
230 | gtk.set_interactive(True) | |
181 | self._current_gui = 'gtk' |
|
231 | self._current_gui = 'gtk' | |
182 | except AttributeError: |
|
232 | except AttributeError: | |
183 | # For older versions of gtk, use our own ctypes version |
|
233 | # For older versions of gtk, use our own ctypes version | |
184 | from IPython.lib.inputhookgtk import inputhook_gtk |
|
234 | from IPython.lib.inputhookgtk import inputhook_gtk | |
185 | self.set_inputhook(inputhook_gtk) |
|
235 | self.set_inputhook(inputhook_gtk) | |
186 | self._current_gui = 'gtk' |
|
236 | self._current_gui = 'gtk' | |
|
237 | self._hijack_gtk() | |||
187 |
|
238 | |||
188 | def disable_gtk(self): |
|
239 | def disable_gtk(self): | |
189 | """Disable event loop integration with PyGTK. |
|
240 | """Disable event loop integration with PyGTK. | |
190 |
|
241 | |||
191 | This merely sets PyOS_InputHook to NULL. |
|
242 | This merely sets PyOS_InputHook to NULL. | |
192 | """ |
|
243 | """ | |
193 | self.clear_inputhook() |
|
244 | self.clear_inputhook() | |
194 |
|
245 | |||
195 | def enable_tk(self, app=False): |
|
246 | def enable_tk(self, app=False): | |
196 | """Enable event loop integration with Tk. |
|
247 | """Enable event loop integration with Tk. | |
197 |
|
248 | |||
198 | Parameters |
|
249 | Parameters | |
199 | ---------- |
|
250 | ---------- | |
200 | app : bool |
|
251 | app : bool | |
201 | Create a running application object or not. |
|
252 | Create a running application object or not. | |
202 |
|
253 | |||
203 | Notes |
|
254 | Notes | |
204 | ----- |
|
255 | ----- | |
205 | Currently this is a no-op as creating a :class:`Tkinter.Tk` object |
|
256 | Currently this is a no-op as creating a :class:`Tkinter.Tk` object | |
206 | sets ``PyOS_InputHook``. |
|
257 | sets ``PyOS_InputHook``. | |
207 | """ |
|
258 | """ | |
208 | self._current_gui = 'tk' |
|
259 | self._current_gui = 'tk' | |
|
260 | self._hijack_tk() | |||
209 |
|
261 | |||
210 | def disable_tk(self): |
|
262 | def disable_tk(self): | |
211 | """Disable event loop integration with Tkinter. |
|
263 | """Disable event loop integration with Tkinter. | |
212 |
|
264 | |||
213 | This merely sets PyOS_InputHook to NULL. |
|
265 | This merely sets PyOS_InputHook to NULL. | |
214 | """ |
|
266 | """ | |
215 | self.clear_inputhook() |
|
267 | self.clear_inputhook() | |
216 |
|
268 | |||
217 | def current_gui(self): |
|
269 | def current_gui(self): | |
218 | """Return a string indicating the currently active GUI or None.""" |
|
270 | """Return a string indicating the currently active GUI or None.""" | |
219 | return self._current_gui |
|
271 | return self._current_gui | |
220 |
|
272 | |||
221 | inputhook_manager = InputHookManager() |
|
273 | inputhook_manager = InputHookManager() | |
222 |
|
274 | |||
223 | enable_wx = inputhook_manager.enable_wx |
|
275 | enable_wx = inputhook_manager.enable_wx | |
224 | disable_wx = inputhook_manager.disable_wx |
|
276 | disable_wx = inputhook_manager.disable_wx | |
225 | enable_qt4 = inputhook_manager.enable_qt4 |
|
277 | enable_qt4 = inputhook_manager.enable_qt4 | |
226 | disable_qt4 = inputhook_manager.disable_qt4 |
|
278 | disable_qt4 = inputhook_manager.disable_qt4 | |
227 | enable_gtk = inputhook_manager.enable_gtk |
|
279 | enable_gtk = inputhook_manager.enable_gtk | |
228 | disable_gtk = inputhook_manager.disable_gtk |
|
280 | disable_gtk = inputhook_manager.disable_gtk | |
229 | enable_tk = inputhook_manager.enable_tk |
|
281 | enable_tk = inputhook_manager.enable_tk | |
230 | disable_tk = inputhook_manager.disable_tk |
|
282 | disable_tk = inputhook_manager.disable_tk | |
231 | clear_inputhook = inputhook_manager.clear_inputhook |
|
283 | clear_inputhook = inputhook_manager.clear_inputhook | |
232 | set_inputhook = inputhook_manager.set_inputhook |
|
284 | set_inputhook = inputhook_manager.set_inputhook | |
233 | current_gui = inputhook_manager.current_gui |
|
285 | current_gui = inputhook_manager.current_gui | |
|
286 | clear_app_refs = inputhook_manager.clear_app_refs |
@@ -1,153 +1,162 b'' | |||||
1 | #!/usr/bin/env python |
|
1 | #!/usr/bin/env python | |
2 | # encoding: utf-8 |
|
2 | # encoding: utf-8 | |
3 |
|
3 | |||
4 | """ |
|
4 | """ | |
5 | Enable wxPython to be used interacive by setting PyOS_InputHook. |
|
5 | Enable wxPython to be used interacive by setting PyOS_InputHook. | |
6 |
|
6 | |||
7 | Authors: Robin Dunn, Brian Granger, Ondrej Certik |
|
7 | Authors: Robin Dunn, Brian Granger, Ondrej Certik | |
8 | """ |
|
8 | """ | |
9 |
|
9 | |||
10 | #----------------------------------------------------------------------------- |
|
10 | #----------------------------------------------------------------------------- | |
11 | # Copyright (C) 2008-2009 The IPython Development Team |
|
11 | # Copyright (C) 2008-2009 The IPython Development Team | |
12 | # |
|
12 | # | |
13 | # Distributed under the terms of the BSD License. The full license is in |
|
13 | # Distributed under the terms of the BSD License. The full license is in | |
14 | # the file COPYING, distributed as part of this software. |
|
14 | # the file COPYING, distributed as part of this software. | |
15 | #----------------------------------------------------------------------------- |
|
15 | #----------------------------------------------------------------------------- | |
16 |
|
16 | |||
17 | #----------------------------------------------------------------------------- |
|
17 | #----------------------------------------------------------------------------- | |
18 | # Imports |
|
18 | # Imports | |
19 | #----------------------------------------------------------------------------- |
|
19 | #----------------------------------------------------------------------------- | |
20 |
|
20 | |||
21 | import os |
|
21 | import os | |
|
22 | import signal | |||
22 | import sys |
|
23 | import sys | |
23 | import time |
|
24 | import time | |
24 | from timeit import default_timer as clock |
|
25 | from timeit import default_timer as clock | |
25 | import wx |
|
26 | import wx | |
26 |
|
27 | |||
27 | if os.name == 'posix': |
|
28 | if os.name == 'posix': | |
28 | import select |
|
29 | import select | |
29 | elif sys.platform == 'win32': |
|
30 | elif sys.platform == 'win32': | |
30 | import msvcrt |
|
31 | import msvcrt | |
31 |
|
32 | |||
32 | #----------------------------------------------------------------------------- |
|
33 | #----------------------------------------------------------------------------- | |
33 | # Code |
|
34 | # Code | |
34 | #----------------------------------------------------------------------------- |
|
35 | #----------------------------------------------------------------------------- | |
35 |
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36 | |||
36 | def stdin_ready(): |
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37 | def stdin_ready(): | |
37 | if os.name == 'posix': |
|
38 | if os.name == 'posix': | |
38 | infds, outfds, erfds = select.select([sys.stdin],[],[],0) |
|
39 | infds, outfds, erfds = select.select([sys.stdin],[],[],0) | |
39 | if infds: |
|
40 | if infds: | |
40 | return True |
|
41 | return True | |
41 | else: |
|
42 | else: | |
42 | return False |
|
43 | return False | |
43 | elif sys.platform == 'win32': |
|
44 | elif sys.platform == 'win32': | |
44 | return msvcrt.kbhit() |
|
45 | return msvcrt.kbhit() | |
45 |
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46 | |||
46 |
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47 | |||
47 | def inputhook_wx1(): |
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48 | def inputhook_wx1(): | |
48 | """Run the wx event loop by processing pending events only. |
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49 | """Run the wx event loop by processing pending events only. | |
49 |
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50 | |||
50 | This approach seems to work, but its performance is not great as it |
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51 | This approach seems to work, but its performance is not great as it | |
51 | relies on having PyOS_InputHook called regularly. |
|
52 | relies on having PyOS_InputHook called regularly. | |
52 | """ |
|
53 | """ | |
53 | app = wx.GetApp() |
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54 | app = wx.GetApp() | |
54 | if app is not None: |
|
55 | if app is not None: | |
55 | assert wx.Thread_IsMain() |
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56 | assert wx.Thread_IsMain() | |
56 |
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57 | |||
57 | # Make a temporary event loop and process system events until |
|
58 | # Make a temporary event loop and process system events until | |
58 | # there are no more waiting, then allow idle events (which |
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59 | # there are no more waiting, then allow idle events (which | |
59 | # will also deal with pending or posted wx events.) |
|
60 | # will also deal with pending or posted wx events.) | |
60 | evtloop = wx.EventLoop() |
|
61 | evtloop = wx.EventLoop() | |
61 | ea = wx.EventLoopActivator(evtloop) |
|
62 | ea = wx.EventLoopActivator(evtloop) | |
62 | while evtloop.Pending(): |
|
63 | while evtloop.Pending(): | |
63 | evtloop.Dispatch() |
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64 | evtloop.Dispatch() | |
64 | app.ProcessIdle() |
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65 | app.ProcessIdle() | |
65 | del ea |
|
66 | del ea | |
66 | return 0 |
|
67 | return 0 | |
67 |
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68 | |||
68 | class EventLoopTimer(wx.Timer): |
|
69 | class EventLoopTimer(wx.Timer): | |
69 |
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70 | |||
70 | def __init__(self, func): |
|
71 | def __init__(self, func): | |
71 | self.func = func |
|
72 | self.func = func | |
72 | wx.Timer.__init__(self) |
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73 | wx.Timer.__init__(self) | |
73 |
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74 | |||
74 | def Notify(self): |
|
75 | def Notify(self): | |
75 | self.func() |
|
76 | self.func() | |
76 |
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77 | |||
77 | class EventLoopRunner(object): |
|
78 | class EventLoopRunner(object): | |
78 |
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79 | |||
79 | def Run(self, time): |
|
80 | def Run(self, time): | |
80 | self.evtloop = wx.EventLoop() |
|
81 | self.evtloop = wx.EventLoop() | |
81 | self.timer = EventLoopTimer(self.check_stdin) |
|
82 | self.timer = EventLoopTimer(self.check_stdin) | |
82 | self.timer.Start(time) |
|
83 | self.timer.Start(time) | |
83 | self.evtloop.Run() |
|
84 | self.evtloop.Run() | |
84 |
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85 | |||
85 | def check_stdin(self): |
|
86 | def check_stdin(self): | |
86 | if stdin_ready(): |
|
87 | if stdin_ready(): | |
87 | self.timer.Stop() |
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88 | self.timer.Stop() | |
88 | self.evtloop.Exit() |
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89 | self.evtloop.Exit() | |
89 |
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90 | |||
90 | def inputhook_wx2(): |
|
91 | def inputhook_wx2(): | |
91 | """Run the wx event loop, polling for stdin. |
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92 | """Run the wx event loop, polling for stdin. | |
92 |
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93 | |||
93 | This version runs the wx eventloop for an undetermined amount of time, |
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94 | This version runs the wx eventloop for an undetermined amount of time, | |
94 | during which it periodically checks to see if anything is ready on |
|
95 | during which it periodically checks to see if anything is ready on | |
95 | stdin. If anything is ready on stdin, the event loop exits. |
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96 | stdin. If anything is ready on stdin, the event loop exits. | |
96 |
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97 | |||
97 | The argument to elr.Run controls how often the event loop looks at stdin. |
|
98 | The argument to elr.Run controls how often the event loop looks at stdin. | |
98 | This determines the responsiveness at the keyboard. A setting of 1000 |
|
99 | This determines the responsiveness at the keyboard. A setting of 1000 | |
99 | enables a user to type at most 1 char per second. I have found that a |
|
100 | enables a user to type at most 1 char per second. I have found that a | |
100 | setting of 10 gives good keyboard response. We can shorten it further, |
|
101 | setting of 10 gives good keyboard response. We can shorten it further, | |
101 | but eventually performance would suffer from calling select/kbhit too |
|
102 | but eventually performance would suffer from calling select/kbhit too | |
102 | often. |
|
103 | often. | |
103 | """ |
|
104 | """ | |
104 | app = wx.GetApp() |
|
105 | app = wx.GetApp() | |
105 | if app is not None: |
|
106 | if app is not None: | |
106 | assert wx.Thread_IsMain() |
|
107 | assert wx.Thread_IsMain() | |
107 | elr = EventLoopRunner() |
|
108 | elr = EventLoopRunner() | |
108 | # As this time is made shorter, keyboard response improves, but idle |
|
109 | # As this time is made shorter, keyboard response improves, but idle | |
109 | # CPU load goes up. 10 ms seems like a good compromise. |
|
110 | # CPU load goes up. 10 ms seems like a good compromise. | |
110 | elr.Run(time=10) # CHANGE time here to control polling interval |
|
111 | elr.Run(time=10) # CHANGE time here to control polling interval | |
111 | return 0 |
|
112 | return 0 | |
112 |
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113 | |||
113 | def inputhook_wx3(): |
|
114 | def inputhook_wx3(): | |
114 | """Run the wx event loop by processing pending events only. |
|
115 | """Run the wx event loop by processing pending events only. | |
115 |
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116 | |||
116 | This is like inputhook_wx1, but it keeps processing pending events |
|
117 | This is like inputhook_wx1, but it keeps processing pending events | |
117 | until stdin is ready. After processing all pending events, a call to |
|
118 | until stdin is ready. After processing all pending events, a call to | |
118 | time.sleep is inserted. This is needed, otherwise, CPU usage is at 100%. |
|
119 | time.sleep is inserted. This is needed, otherwise, CPU usage is at 100%. | |
119 | This sleep time should be tuned though for best performance. |
|
120 | This sleep time should be tuned though for best performance. | |
120 | """ |
|
121 | """ | |
121 | app = wx.GetApp() |
|
122 | app = wx.GetApp() | |
122 | if app is not None: |
|
123 | if app is not None: | |
123 | assert wx.Thread_IsMain() |
|
124 | assert wx.Thread_IsMain() | |
124 |
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125 | |||
|
126 | # The import of wx on Linux sets the handler for signal.SIGINT | |||
|
127 | # to 0. This is a bug in wx or gtk. We fix by just setting it | |||
|
128 | # back to the Python default. | |||
|
129 | if not callable(signal.getsignal(signal.SIGINT)): | |||
|
130 | signal.signal(signal.SIGINT, signal.default_int_handler) | |||
|
131 | ||||
125 | evtloop = wx.EventLoop() |
|
132 | evtloop = wx.EventLoop() | |
126 | ea = wx.EventLoopActivator(evtloop) |
|
133 | ea = wx.EventLoopActivator(evtloop) | |
127 | t = clock() |
|
134 | t = clock() | |
128 | while not stdin_ready(): |
|
135 | while not stdin_ready(): | |
129 | while evtloop.Pending(): |
|
136 | while evtloop.Pending(): | |
130 | t = clock() |
|
137 | t = clock() | |
131 | evtloop.Dispatch() |
|
138 | evtloop.Dispatch() | |
132 | app.ProcessIdle() |
|
139 | app.ProcessIdle() | |
133 | # We need to sleep at this point to keep the idle CPU load |
|
140 | # We need to sleep at this point to keep the idle CPU load | |
134 | # low. However, if sleep to long, GUI response is poor. As |
|
141 | # low. However, if sleep to long, GUI response is poor. As | |
135 | # a compromise, we watch how often GUI events are being processed |
|
142 | # a compromise, we watch how often GUI events are being processed | |
136 | # and switch between a short and long sleep time. Here are some |
|
143 | # and switch between a short and long sleep time. Here are some | |
137 | # stats useful in helping to tune this. |
|
144 | # stats useful in helping to tune this. | |
138 | # time CPU load |
|
145 | # time CPU load | |
139 | # 0.001 13% |
|
146 | # 0.001 13% | |
140 | # 0.005 3% |
|
147 | # 0.005 3% | |
141 | # 0.01 1.5% |
|
148 | # 0.01 1.5% | |
142 |
# 0.05 0.5% |
|
149 | # 0.05 0.5% | |
|
150 | if clock()-t > 1.0: | |||
|
151 | time.sleep(1.0) | |||
143 | if clock()-t > 0.1: |
|
152 | if clock()-t > 0.1: | |
144 | # Few GUI events coming in, so we can sleep longer |
|
153 | # Few GUI events coming in, so we can sleep longer | |
145 | time.sleep(0.05) |
|
154 | time.sleep(0.05) | |
146 | else: |
|
155 | else: | |
147 | # Many GUI events coming in, so sleep only very little |
|
156 | # Many GUI events coming in, so sleep only very little | |
148 | time.sleep(0.001) |
|
157 | time.sleep(0.001) | |
149 | del ea |
|
158 | del ea | |
150 | return 0 |
|
159 | return 0 | |
151 |
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160 | |||
152 | # This is our default implementation |
|
161 | # This is our default implementation | |
153 | inputhook_wx = inputhook_wx3 No newline at end of file |
|
162 | inputhook_wx = inputhook_wx3 |
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