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@@ -0,0 +1,85 b'' | |||||
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1 | """GUI support for the IPython ZeroMQ kernel - GTK toolkit support. | |||
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2 | """ | |||
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3 | #----------------------------------------------------------------------------- | |||
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4 | # Copyright (C) 2010-2011 The IPython Development Team | |||
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5 | # | |||
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6 | # Distributed under the terms of the BSD License. The full license is in | |||
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7 | # the file COPYING.txt, distributed as part of this software. | |||
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8 | #----------------------------------------------------------------------------- | |||
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9 | ||||
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10 | #----------------------------------------------------------------------------- | |||
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11 | # Imports | |||
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12 | #----------------------------------------------------------------------------- | |||
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13 | # stdlib | |||
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14 | import sys | |||
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15 | ||||
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16 | # Third-party | |||
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17 | from gi.repository import GObject, Gtk | |||
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18 | ||||
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19 | #----------------------------------------------------------------------------- | |||
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20 | # Classes and functions | |||
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21 | #----------------------------------------------------------------------------- | |||
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22 | ||||
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23 | class GTKEmbed(object): | |||
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24 | """A class to embed a kernel into the GTK main event loop. | |||
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25 | """ | |||
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26 | def __init__(self, kernel): | |||
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27 | self.kernel = kernel | |||
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28 | # These two will later store the real gtk functions when we hijack them | |||
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29 | self.gtk_main = None | |||
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30 | self.gtk_main_quit = None | |||
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31 | ||||
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32 | def start(self): | |||
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33 | """Starts the GTK main event loop and sets our kernel startup routine. | |||
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34 | """ | |||
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35 | # Register our function to initiate the kernel and start gtk | |||
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36 | GObject.idle_add(self._wire_kernel) | |||
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37 | Gtk.main() | |||
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38 | ||||
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39 | def _wire_kernel(self): | |||
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40 | """Initializes the kernel inside GTK. | |||
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41 | ||||
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42 | This is meant to run only once at startup, so it does its job and | |||
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43 | returns False to ensure it doesn't get run again by GTK. | |||
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44 | """ | |||
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45 | self.gtk_main, self.gtk_main_quit = self._hijack_gtk() | |||
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46 | GObject.timeout_add(int(1000*self.kernel._poll_interval), | |||
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47 | self.iterate_kernel) | |||
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48 | return False | |||
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49 | ||||
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50 | def iterate_kernel(self): | |||
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51 | """Run one iteration of the kernel and return True. | |||
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52 | ||||
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53 | GTK timer functions must return True to be called again, so we make the | |||
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54 | call to :meth:`do_one_iteration` and then return True for GTK. | |||
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55 | """ | |||
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56 | self.kernel.do_one_iteration() | |||
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57 | return True | |||
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58 | ||||
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59 | def stop(self): | |||
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60 | # FIXME: this one isn't getting called because we have no reliable | |||
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61 | # kernel shutdown. We need to fix that: once the kernel has a | |||
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62 | # shutdown mechanism, it can call this. | |||
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63 | self.gtk_main_quit() | |||
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64 | sys.exit() | |||
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65 | ||||
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66 | def _hijack_gtk(self): | |||
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67 | """Hijack a few key functions in GTK for IPython integration. | |||
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68 | ||||
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69 | Modifies pyGTK's main and main_quit with a dummy so user code does not | |||
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70 | block IPython. This allows us to use %run to run arbitrary pygtk | |||
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71 | scripts from a long-lived IPython session, and when they attempt to | |||
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72 | start or stop | |||
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73 | ||||
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74 | Returns | |||
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75 | ------- | |||
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76 | The original functions that have been hijacked: | |||
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77 | - Gtk.main | |||
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78 | - Gtk.main_quit | |||
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79 | """ | |||
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80 | def dummy(*args, **kw): | |||
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81 | pass | |||
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82 | # save and trap main and main_quit from gtk | |||
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83 | orig_main, Gtk.main = Gtk.main, dummy | |||
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84 | orig_main_quit, Gtk.main_quit = Gtk.main_quit, dummy | |||
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85 | return orig_main, orig_main_quit |
@@ -154,6 +154,14 b' def loop_gtk(kernel):' | |||||
154 | gtk_kernel.start() |
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154 | gtk_kernel.start() | |
155 |
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155 | |||
156 |
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156 | |||
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157 | def loop_gtk3(kernel): | |||
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158 | """Start the kernel, coordinating with the GTK event loop""" | |||
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159 | from .gui.gtk3embed import GTKEmbed | |||
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160 | ||||
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161 | gtk_kernel = GTKEmbed(kernel) | |||
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162 | gtk_kernel.start() | |||
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163 | ||||
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164 | ||||
157 | def loop_cocoa(kernel): |
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165 | def loop_cocoa(kernel): | |
158 | """Start the kernel, coordinating with the Cocoa CFRunLoop event loop |
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166 | """Start the kernel, coordinating with the Cocoa CFRunLoop event loop | |
159 | via the matplotlib MacOSX backend. |
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167 | via the matplotlib MacOSX backend. | |
@@ -233,6 +241,7 b' loop_map = {' | |||||
233 | 'wx' : loop_wx, |
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241 | 'wx' : loop_wx, | |
234 | 'tk' : loop_tk, |
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242 | 'tk' : loop_tk, | |
235 | 'gtk': loop_gtk, |
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243 | 'gtk': loop_gtk, | |
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244 | 'gtk3': loop_gtk3, | |||
236 | None : None, |
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245 | None : None, | |
237 | } |
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246 | } | |
238 |
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247 |
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