Show More
@@ -0,0 +1,57 b'' | |||
|
1 | """Test the new %gui command. Run this in ipython as | |
|
2 | ||
|
3 | %run switchgui [backend] | |
|
4 | ||
|
5 | where the optional backend can be one of: qt4, gtk, tk, wx. | |
|
6 | """ | |
|
7 | ||
|
8 | import sys | |
|
9 | import time | |
|
10 | ||
|
11 | import IPython.core.ipapi as ipapi | |
|
12 | ip = ipapi.get() | |
|
13 | ||
|
14 | from IPython.lib import inputhook | |
|
15 | ||
|
16 | try: | |
|
17 | backend = sys.argv[1] | |
|
18 | #a = ip.magic('gui -a %s' % backend) | |
|
19 | #a = ip.magic('gui %s' % backend) | |
|
20 | except IndexError: | |
|
21 | backend = 'qt' | |
|
22 | ||
|
23 | backends = dict(wx='wxagg', qt='qt4agg', gtk='gtkagg', tk='tkagg') | |
|
24 | ||
|
25 | import matplotlib | |
|
26 | matplotlib.use(backends[backend]) | |
|
27 | #matplotlib.interactive(True) | |
|
28 | ||
|
29 | import matplotlib | |
|
30 | from matplotlib import pyplot as plt, mlab, pylab | |
|
31 | import numpy as np | |
|
32 | ||
|
33 | from numpy import * | |
|
34 | from matplotlib.pyplot import * | |
|
35 | ||
|
36 | x = np.linspace(0,pi,100) | |
|
37 | ||
|
38 | print "A plot has been created" | |
|
39 | line, = plot(x,sin(2*x)) | |
|
40 | plt.show() | |
|
41 | inputhook.spin_qt4() | |
|
42 | ||
|
43 | #raw_input("Press Enter to continue") | |
|
44 | ||
|
45 | print "I will now count until 10, please hit Ctrl-C before I'm done..." | |
|
46 | print "IPython should stop counting and return to the prompt without crashing." | |
|
47 | ||
|
48 | line_x = line.get_data()[0] | |
|
49 | for i in range(1,51): | |
|
50 | print i, | |
|
51 | sys.stdout.flush() | |
|
52 | line.set_data(line_x,sin(x*i)) | |
|
53 | plt.title('i=%d' % i) | |
|
54 | #plt.show() | |
|
55 | plt.draw() | |
|
56 | inputhook.spin_qt4() | |
|
57 | #time.sleep(0.04) |
@@ -1,333 +1,352 b'' | |||
|
1 | 1 | #!/usr/bin/env python |
|
2 | 2 | # encoding: utf-8 |
|
3 | 3 | """ |
|
4 | 4 | Inputhook management for GUI event loop integration. |
|
5 | 5 | """ |
|
6 | 6 | |
|
7 | 7 | #----------------------------------------------------------------------------- |
|
8 | 8 | # Copyright (C) 2008-2009 The IPython Development Team |
|
9 | 9 | # |
|
10 | 10 | # Distributed under the terms of the BSD License. The full license is in |
|
11 | 11 | # the file COPYING, distributed as part of this software. |
|
12 | 12 | #----------------------------------------------------------------------------- |
|
13 | 13 | |
|
14 | 14 | #----------------------------------------------------------------------------- |
|
15 | 15 | # Imports |
|
16 | 16 | #----------------------------------------------------------------------------- |
|
17 | 17 | |
|
18 | 18 | import ctypes |
|
19 | 19 | import sys |
|
20 | 20 | |
|
21 | 21 | #----------------------------------------------------------------------------- |
|
22 | 22 | # Code |
|
23 | 23 | #----------------------------------------------------------------------------- |
|
24 | 24 | |
|
25 | def appstart_qt4(): | |
|
26 | from PyQt4 import QtCore, QtGui | |
|
27 | ||
|
28 | app = QtCore.QCoreApplication.instance() | |
|
29 | print 'qtapp:', app | |
|
30 | if app is not None: | |
|
31 | if current_gui() == 'qt4': | |
|
32 | pass | |
|
33 | else: | |
|
34 | app.exec_() | |
|
35 | ||
|
36 | ||
|
25 | 37 | class _DummyMainloop(object): |
|
26 | 38 | """A special manager to hijack GUI mainloops that is mostly a no-op. |
|
27 | 39 | |
|
28 | 40 | This does have, however, special logic. |
|
29 | 41 | """ |
|
30 | 42 | def __init__(self, ml, ihm, gui_type): |
|
31 | 43 | self.ml = ml |
|
32 | 44 | self.ihm = ihm |
|
33 | 45 | self.gui_type = gui_type |
|
34 | 46 | |
|
35 | 47 | |
|
36 | 48 | def __call__(self, *args, **kw): |
|
49 | force = kw.pop('force', False) | |
|
50 | force = False | |
|
51 | if force: | |
|
52 | #print 'forced spin' # dbg | |
|
53 | self.ml(*args, **kw) | |
|
54 | ||
|
37 | 55 | if self.ihm.current_gui() == self.gui_type: |
|
38 | 56 | pass |
|
39 | 57 | else: |
|
40 | 58 | self.ml(*args, **kw) |
|
41 | 59 | |
|
42 | 60 | |
|
43 | 61 | def spin_qt4(): |
|
44 | 62 | from PyQt4 import QtCore, QtGui |
|
45 | 63 | |
|
46 | 64 | app = QtCore.QCoreApplication.instance() |
|
47 | 65 | if (app is not None) and (app.thread() == QtCore.QThread.currentThread()): |
|
48 | timer = QtCore.QTimer() | |
|
49 | QtCore.QObject.connect(timer, | |
|
50 | QtCore.SIGNAL('timeout()'), | |
|
51 | app, | |
|
52 | QtCore.SLOT('quit()')) | |
|
53 | timer.start(100) | |
|
54 | QtCore.QCoreApplication.exec_() | |
|
55 | timer.stop() | |
|
66 | ## timer = QtCore.QTimer() | |
|
67 | ## QtCore.QObject.connect(timer, | |
|
68 | ## QtCore.SIGNAL('timeout()'), | |
|
69 | ## app, | |
|
70 | ## QtCore.SLOT('quit()')) | |
|
71 | ## timer.start(100) | |
|
72 | #QtCore.QCoreApplication.exec_(force=True) | |
|
73 | QtCore.QCoreApplication.processEvents(QtCore.QEventLoop.AllEvents) | |
|
74 | ##timer.stop() | |
|
56 | 75 | |
|
57 | 76 | |
|
58 | 77 | def spin_wx(): |
|
59 | 78 | app = wx.GetApp() |
|
60 | 79 | if app is not None and wx.Thread_IsMain(): |
|
61 | 80 | evtloop = wx.EventLoop() |
|
62 | 81 | ea = wx.EventLoopActivator(evtloop) |
|
63 | 82 | while evtloop.Pending(): |
|
64 | 83 | evtloop.Dispatch() |
|
65 | 84 | app.ProcessIdle() |
|
66 | 85 | del ea |
|
67 | 86 | |
|
68 | 87 | |
|
69 | 88 | class InputHookManager(object): |
|
70 | 89 | """Manage PyOS_InputHook for different GUI toolkits. |
|
71 | 90 | |
|
72 | 91 | This class installs various hooks under ``PyOSInputHook`` to handle |
|
73 | 92 | GUI event loop integration. |
|
74 | 93 | """ |
|
75 | 94 | |
|
76 | 95 | def __init__(self): |
|
77 | 96 | self.PYFUNC = ctypes.PYFUNCTYPE(ctypes.c_int) |
|
78 | 97 | self._apps = {} |
|
79 | 98 | self._reset() |
|
80 | 99 | |
|
81 | 100 | def _reset(self): |
|
82 | 101 | self._callback_pyfunctype = None |
|
83 | 102 | self._callback = None |
|
84 | 103 | self._installed = False |
|
85 | 104 | self._current_gui = None |
|
86 | 105 | |
|
87 | 106 | def _hijack_wx(self): |
|
88 | 107 | """Hijack the wx mainloop so a user calling it won't cause badness.""" |
|
89 | 108 | import wx |
|
90 | 109 | if hasattr(wx, '_core_'): core = getattr(wx, '_core_') |
|
91 | 110 | elif hasattr(wx, '_core'): core = getattr(wx, '_core') |
|
92 | 111 | else: raise AttributeError('Could not find wx core module') |
|
93 | 112 | orig_mainloop = core.PyApp_MainLoop |
|
94 | 113 | core.PyApp_MainLoop = _DummyMainloop |
|
95 | 114 | return orig_mainloop |
|
96 | 115 | |
|
97 | 116 | def _hijack_qt4(self): |
|
98 | 117 | """Hijack the qt4 mainloop so a user calling it won't cause badness.""" |
|
99 | 118 | from PyQt4 import QtGui, QtCore |
|
100 | 119 | orig_mainloop = QtGui.qApp.exec_ |
|
101 | 120 | dumb_ml = _DummyMainloop(orig_mainloop, self, 'qt4') |
|
102 | 121 | QtGui.qApp.exec_ = dumb_ml |
|
103 | 122 | QtGui.QApplication.exec_ = dumb_ml |
|
104 | 123 | QtCore.QCoreApplication.exec_ = dumb_ml |
|
105 | 124 | return orig_mainloop |
|
106 | 125 | |
|
107 | 126 | def _hijack_gtk(self): |
|
108 | 127 | """Hijack the gtk mainloop so a user calling it won't cause badness.""" |
|
109 | 128 | import gtk |
|
110 | 129 | orig_mainloop = gtk.main |
|
111 | 130 | gtk.mainloop = _DummyMainloop |
|
112 | 131 | gtk.main = _DummyMainloop |
|
113 | 132 | return orig_mainloop |
|
114 | 133 | |
|
115 | 134 | def _hijack_tk(self): |
|
116 | 135 | """Hijack the tk mainloop so a user calling it won't cause badness.""" |
|
117 | 136 | import Tkinter |
|
118 | 137 | Tkinter.Misc.mainloop = _DummyMainloop |
|
119 | 138 | Tkinter.mainloop = _DummyMainloop |
|
120 | 139 | |
|
121 | 140 | def get_pyos_inputhook(self): |
|
122 | 141 | """Return the current PyOS_InputHook as a ctypes.c_void_p.""" |
|
123 | 142 | return ctypes.c_void_p.in_dll(ctypes.pythonapi,"PyOS_InputHook") |
|
124 | 143 | |
|
125 | 144 | def get_pyos_inputhook_as_func(self): |
|
126 | 145 | """Return the current PyOS_InputHook as a ctypes.PYFUNCYPE.""" |
|
127 | 146 | return self.PYFUNC.in_dll(ctypes.pythonapi,"PyOS_InputHook") |
|
128 | 147 | |
|
129 | 148 | def set_inputhook(self, callback): |
|
130 | 149 | """Set PyOS_InputHook to callback and return the previous one.""" |
|
131 | 150 | self._callback = callback |
|
132 | 151 | self._callback_pyfunctype = self.PYFUNC(callback) |
|
133 | 152 | pyos_inputhook_ptr = self.get_pyos_inputhook() |
|
134 | 153 | original = self.get_pyos_inputhook_as_func() |
|
135 | 154 | pyos_inputhook_ptr.value = \ |
|
136 | 155 | ctypes.cast(self._callback_pyfunctype, ctypes.c_void_p).value |
|
137 | 156 | self._installed = True |
|
138 | 157 | return original |
|
139 | 158 | |
|
140 | 159 | def clear_inputhook(self): |
|
141 | 160 | """Set PyOS_InputHook to NULL and return the previous one.""" |
|
142 | 161 | pyos_inputhook_ptr = self.get_pyos_inputhook() |
|
143 | 162 | original = self.get_pyos_inputhook_as_func() |
|
144 | 163 | pyos_inputhook_ptr.value = ctypes.c_void_p(None).value |
|
145 | 164 | self._reset() |
|
146 | 165 | return original |
|
147 | 166 | |
|
148 | 167 | def clear_app_refs(self, gui=None): |
|
149 | 168 | """Clear IPython's internal reference to an application instance. |
|
150 | 169 | |
|
151 | 170 | Whenever we create an app for a user on qt4 or wx, we hold a |
|
152 | 171 | reference to the app. This is needed because in some cases bad things |
|
153 | 172 | can happen if a user doesn't hold a reference themselves. This |
|
154 | 173 | method is provided to clear the references we are holding. |
|
155 | 174 | |
|
156 | 175 | Parameters |
|
157 | 176 | ---------- |
|
158 | 177 | gui : None or str |
|
159 | 178 | If None, clear all app references. If ('wx', 'qt4') clear |
|
160 | 179 | the app for that toolkit. References are not held for gtk or tk |
|
161 | 180 | as those toolkits don't have the notion of an app. |
|
162 | 181 | """ |
|
163 | 182 | if gui is None: |
|
164 | 183 | self._apps = {} |
|
165 | 184 | elif self._apps.has_key(gui): |
|
166 | 185 | del self._apps[gui] |
|
167 | 186 | |
|
168 | 187 | def enable_wx(self, app=False): |
|
169 | 188 | """Enable event loop integration with wxPython. |
|
170 | 189 | |
|
171 | 190 | Parameters |
|
172 | 191 | ---------- |
|
173 | 192 | app : bool |
|
174 | 193 | Create a running application object or not. |
|
175 | 194 | |
|
176 | 195 | Notes |
|
177 | 196 | ----- |
|
178 | 197 | This methods sets the ``PyOS_InputHook`` for wxPython, which allows |
|
179 | 198 | the wxPython to integrate with terminal based applications like |
|
180 | 199 | IPython. |
|
181 | 200 | |
|
182 | 201 | If ``app`` is True, we create an :class:`wx.App` as follows:: |
|
183 | 202 | |
|
184 | 203 | import wx |
|
185 | 204 | app = wx.App(redirect=False, clearSigInt=False) |
|
186 | 205 | |
|
187 | 206 | Both options this constructor are important for things to work |
|
188 | 207 | properly in an interactive context. |
|
189 | 208 | |
|
190 | 209 | But, we first check to see if an application has already been |
|
191 | 210 | created. If so, we simply return that instance. |
|
192 | 211 | """ |
|
193 | 212 | from IPython.lib.inputhookwx import inputhook_wx |
|
194 | 213 | self.set_inputhook(inputhook_wx) |
|
195 | 214 | self._current_gui = 'wx' |
|
196 | 215 | self._hijack_wx() |
|
197 | 216 | if app: |
|
198 | 217 | import wx |
|
199 | 218 | app = wx.GetApp() |
|
200 | 219 | if app is None: |
|
201 | 220 | app = wx.App(redirect=False, clearSigInt=False) |
|
202 | 221 | self._apps['wx'] = app |
|
203 | 222 | return app |
|
204 | 223 | |
|
205 | 224 | def disable_wx(self): |
|
206 | 225 | """Disable event loop integration with wxPython. |
|
207 | 226 | |
|
208 | 227 | This merely sets PyOS_InputHook to NULL. |
|
209 | 228 | """ |
|
210 | 229 | self.clear_inputhook() |
|
211 | 230 | |
|
212 | 231 | def enable_qt4(self, app=False): |
|
213 | 232 | """Enable event loop integration with PyQt4. |
|
214 | 233 | |
|
215 | 234 | Parameters |
|
216 | 235 | ---------- |
|
217 | 236 | app : bool |
|
218 | 237 | Create a running application object or not. |
|
219 | 238 | |
|
220 | 239 | Notes |
|
221 | 240 | ----- |
|
222 | 241 | This methods sets the PyOS_InputHook for PyQt4, which allows |
|
223 | 242 | the PyQt4 to integrate with terminal based applications like |
|
224 | 243 | IPython. |
|
225 | 244 | |
|
226 | 245 | If ``app`` is True, we create an :class:`QApplication` as follows:: |
|
227 | 246 | |
|
228 | 247 | from PyQt4 import QtCore |
|
229 | 248 | app = QtGui.QApplication(sys.argv) |
|
230 | 249 | |
|
231 | 250 | But, we first check to see if an application has already been |
|
232 | 251 | created. If so, we simply return that instance. |
|
233 | 252 | """ |
|
234 | 253 | from PyQt4 import QtCore |
|
235 | 254 | # PyQt4 has had this since 4.3.1. In version 4.2, PyOS_InputHook |
|
236 | 255 | # was set when QtCore was imported, but if it ever got removed, |
|
237 | 256 | # you couldn't reset it. For earlier versions we can |
|
238 | 257 | # probably implement a ctypes version. |
|
239 | 258 | try: |
|
240 | 259 | QtCore.pyqtRestoreInputHook() |
|
241 | 260 | except AttributeError: |
|
242 | 261 | pass |
|
243 | 262 | self._current_gui = 'qt4' |
|
244 | self._hijack_qt4() | |
|
263 | #self._hijack_qt4() | |
|
245 | 264 | if app: |
|
246 | 265 | from PyQt4 import QtGui |
|
247 | 266 | app = QtCore.QCoreApplication.instance() |
|
248 | 267 | if app is None: |
|
249 | 268 | app = QtGui.QApplication(sys.argv) |
|
250 | 269 | self._apps['qt4'] = app |
|
251 | 270 | return app |
|
252 | 271 | |
|
253 | 272 | def disable_qt4(self): |
|
254 | 273 | """Disable event loop integration with PyQt4. |
|
255 | 274 | |
|
256 | 275 | This merely sets PyOS_InputHook to NULL. |
|
257 | 276 | """ |
|
258 | 277 | self.clear_inputhook() |
|
259 | 278 | |
|
260 | 279 | def enable_gtk(self, app=False): |
|
261 | 280 | """Enable event loop integration with PyGTK. |
|
262 | 281 | |
|
263 | 282 | Parameters |
|
264 | 283 | ---------- |
|
265 | 284 | app : bool |
|
266 | 285 | Create a running application object or not. Because gtk does't |
|
267 | 286 | have an app class, this does nothing. |
|
268 | 287 | |
|
269 | 288 | Notes |
|
270 | 289 | ----- |
|
271 | 290 | This methods sets the PyOS_InputHook for PyGTK, which allows |
|
272 | 291 | the PyGTK to integrate with terminal based applications like |
|
273 | 292 | IPython. |
|
274 | 293 | """ |
|
275 | 294 | import gtk |
|
276 | 295 | try: |
|
277 | 296 | gtk.set_interactive(True) |
|
278 | 297 | self._current_gui = 'gtk' |
|
279 | 298 | except AttributeError: |
|
280 | 299 | # For older versions of gtk, use our own ctypes version |
|
281 | 300 | from IPython.lib.inputhookgtk import inputhook_gtk |
|
282 | 301 | self.set_inputhook(inputhook_gtk) |
|
283 | 302 | self._current_gui = 'gtk' |
|
284 | 303 | self._hijack_gtk() |
|
285 | 304 | |
|
286 | 305 | def disable_gtk(self): |
|
287 | 306 | """Disable event loop integration with PyGTK. |
|
288 | 307 | |
|
289 | 308 | This merely sets PyOS_InputHook to NULL. |
|
290 | 309 | """ |
|
291 | 310 | self.clear_inputhook() |
|
292 | 311 | |
|
293 | 312 | def enable_tk(self, app=False): |
|
294 | 313 | """Enable event loop integration with Tk. |
|
295 | 314 | |
|
296 | 315 | Parameters |
|
297 | 316 | ---------- |
|
298 | 317 | app : bool |
|
299 | 318 | Create a running application object or not. |
|
300 | 319 | |
|
301 | 320 | Notes |
|
302 | 321 | ----- |
|
303 | 322 | Currently this is a no-op as creating a :class:`Tkinter.Tk` object |
|
304 | 323 | sets ``PyOS_InputHook``. |
|
305 | 324 | """ |
|
306 | 325 | self._current_gui = 'tk' |
|
307 | 326 | self._hijack_tk() |
|
308 | 327 | |
|
309 | 328 | def disable_tk(self): |
|
310 | 329 | """Disable event loop integration with Tkinter. |
|
311 | 330 | |
|
312 | 331 | This merely sets PyOS_InputHook to NULL. |
|
313 | 332 | """ |
|
314 | 333 | self.clear_inputhook() |
|
315 | 334 | |
|
316 | 335 | def current_gui(self): |
|
317 | 336 | """Return a string indicating the currently active GUI or None.""" |
|
318 | 337 | return self._current_gui |
|
319 | 338 | |
|
320 | 339 | inputhook_manager = InputHookManager() |
|
321 | 340 | |
|
322 | 341 | enable_wx = inputhook_manager.enable_wx |
|
323 | 342 | disable_wx = inputhook_manager.disable_wx |
|
324 | 343 | enable_qt4 = inputhook_manager.enable_qt4 |
|
325 | 344 | disable_qt4 = inputhook_manager.disable_qt4 |
|
326 | 345 | enable_gtk = inputhook_manager.enable_gtk |
|
327 | 346 | disable_gtk = inputhook_manager.disable_gtk |
|
328 | 347 | enable_tk = inputhook_manager.enable_tk |
|
329 | 348 | disable_tk = inputhook_manager.disable_tk |
|
330 | 349 | clear_inputhook = inputhook_manager.clear_inputhook |
|
331 | 350 | set_inputhook = inputhook_manager.set_inputhook |
|
332 | 351 | current_gui = inputhook_manager.current_gui |
|
333 | 352 | clear_app_refs = inputhook_manager.clear_app_refs |
@@ -1,37 +1,42 b'' | |||
|
1 | 1 | #!/usr/bin/env python |
|
2 | 2 | """Simple Qt4 example to manually test event loop integration. |
|
3 | 3 | |
|
4 | 4 | This is meant to run tests manually in ipython as: |
|
5 | 5 | |
|
6 | 6 | In [5]: %gui qt |
|
7 | 7 | |
|
8 | 8 | In [6]: %run gui-qt.py |
|
9 | 9 | |
|
10 | 10 | Ref: Modified from http://zetcode.com/tutorials/pyqt4/firstprograms/ |
|
11 | 11 | """ |
|
12 | 12 | |
|
13 | 13 | import sys |
|
14 | 14 | from PyQt4 import QtGui, QtCore |
|
15 | 15 | |
|
16 | 16 | class SimpleWindow(QtGui.QWidget): |
|
17 | 17 | def __init__(self, parent=None): |
|
18 | 18 | QtGui.QWidget.__init__(self, parent) |
|
19 | 19 | |
|
20 | 20 | self.setGeometry(300, 300, 200, 80) |
|
21 | 21 | self.setWindowTitle('Hello World') |
|
22 | 22 | |
|
23 | 23 | quit = QtGui.QPushButton('Close', self) |
|
24 | 24 | quit.setGeometry(10, 10, 60, 35) |
|
25 | 25 | |
|
26 | 26 | self.connect(quit, QtCore.SIGNAL('clicked()'), |
|
27 | 27 | self, QtCore.SLOT('close()')) |
|
28 | 28 | |
|
29 | 29 | if __name__ == '__main__': |
|
30 | 30 | app = QtCore.QCoreApplication.instance() |
|
31 | 31 | if app is None: |
|
32 | 32 | app = QtGui.QApplication([]) |
|
33 | 33 | |
|
34 | 34 | sw = SimpleWindow() |
|
35 | 35 | sw.show() |
|
36 | 36 | |
|
37 | try: | |
|
38 | import IPython.lib.inputhook as i; i.appstart_qt4() | |
|
39 | except ImportError: | |
|
37 | 40 | app.exec_() |
|
41 | ||
|
42 | #import time; time.sleep(10) |
General Comments 0
You need to be logged in to leave comments.
Login now