1 /* GDK - The GIMP Drawing Kit
2 * Copyright (C) 2009 Carlos Garnacho <carlosg@gnome.org>
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library. If not, see <http://www.gnu.org/licenses/>.
20 #include "gdkeventsource.h"
22 #include "gdkinternals.h"
23 #include "gdkwindow-x11.h"
24 #include "gdkprivate-x11.h"
27 static gboolean gdk_event_source_prepare (GSource *source,
29 static gboolean gdk_event_source_check (GSource *source);
30 static gboolean gdk_event_source_dispatch (GSource *source,
33 static void gdk_event_source_finalize (GSource *source);
35 #define HAS_FOCUS(toplevel) \
36 ((toplevel)->has_focus || (toplevel)->has_pointer_focus)
38 struct _GdkEventSource
43 GPollFD event_poll_fd;
47 static GSourceFuncs event_funcs = {
48 gdk_event_source_prepare,
49 gdk_event_source_check,
50 gdk_event_source_dispatch,
51 gdk_event_source_finalize
54 static GList *event_sources = NULL;
57 gdk_event_apply_filters (XEvent *xevent,
62 GdkFilterReturn result;
65 tmp_list = _gdk_default_filters;
67 tmp_list = window->filters;
71 GdkEventFilter *filter = (GdkEventFilter*) tmp_list->data;
74 if ((filter->flags & GDK_EVENT_FILTER_REMOVED) != 0)
76 tmp_list = tmp_list->next;
81 result = filter->function (xevent, event, filter->data);
83 /* Protect against unreffing the filter mutating the list */
84 node = tmp_list->next;
86 _gdk_event_filter_unref (window, filter);
90 if (result != GDK_FILTER_CONTINUE)
94 return GDK_FILTER_CONTINUE;
98 gdk_event_source_get_filter_window (GdkEventSource *event_source,
100 GdkEventTranslator **event_translator)
102 GList *list = event_source->translators;
105 *event_translator = NULL;
109 GdkEventTranslator *translator = list->data;
112 window = _gdk_x11_event_translator_get_window (translator,
113 event_source->display,
117 *event_translator = translator;
122 window = gdk_x11_window_lookup_for_display (event_source->display,
123 xevent->xany.window);
125 if (window && !GDK_IS_WINDOW (window))
132 handle_focus_change (GdkEventCrossing *event)
134 GdkToplevelX11 *toplevel;
135 gboolean focus_in, had_focus;
137 toplevel = _gdk_x11_window_get_toplevel (event->window);
138 focus_in = (event->type == GDK_ENTER_NOTIFY);
140 if (!toplevel || event->detail == GDK_NOTIFY_INFERIOR)
143 toplevel->has_pointer = focus_in;
145 if (!event->focus || toplevel->has_focus_window)
148 had_focus = HAS_FOCUS (toplevel);
149 toplevel->has_pointer_focus = focus_in;
151 if (HAS_FOCUS (toplevel) != had_focus)
153 GdkEvent *focus_event;
155 focus_event = gdk_event_new (GDK_FOCUS_CHANGE);
156 focus_event->focus_change.window = g_object_ref (event->window);
157 focus_event->focus_change.send_event = FALSE;
158 focus_event->focus_change.in = focus_in;
159 gdk_event_set_device (focus_event, gdk_event_get_device ((GdkEvent *) event));
161 gdk_event_put (focus_event);
162 gdk_event_free (focus_event);
167 gdk_event_source_translate_event (GdkEventSource *event_source,
170 GdkEvent *event = gdk_event_new (GDK_NOTHING);
171 GdkFilterReturn result = GDK_FILTER_CONTINUE;
172 GdkEventTranslator *event_translator;
173 GdkWindow *filter_window;
176 dpy = GDK_DISPLAY_XDISPLAY (event_source->display);
178 #ifdef HAVE_XGENERICEVENTS
179 /* Get cookie data here so it's available
180 * to every event translator and event filter.
182 if (xevent->type == GenericEvent)
183 XGetEventData (dpy, &xevent->xcookie);
186 filter_window = gdk_event_source_get_filter_window (event_source, xevent,
189 event->any.window = g_object_ref (filter_window);
191 /* Run default filters */
192 if (_gdk_default_filters)
194 /* Apply global filters */
195 result = gdk_event_apply_filters (xevent, event, NULL);
198 if (result == GDK_FILTER_CONTINUE &&
199 filter_window && filter_window->filters)
201 /* Apply per-window filters */
202 result = gdk_event_apply_filters (xevent, event, filter_window);
205 if (result != GDK_FILTER_CONTINUE)
207 #ifdef HAVE_XGENERICEVENTS
208 if (xevent->type == GenericEvent)
209 XFreeEventData (dpy, &xevent->xcookie);
212 if (result == GDK_FILTER_REMOVE)
214 gdk_event_free (event);
217 else /* GDK_FILTER_TRANSLATE */
221 gdk_event_free (event);
224 if (event_translator)
226 /* Event translator was gotten before in get_filter_window() */
227 event = _gdk_x11_event_translator_translate (event_translator,
228 event_source->display,
233 GList *list = event_source->translators;
235 while (list && !event)
237 GdkEventTranslator *translator = list->data;
240 event = _gdk_x11_event_translator_translate (translator,
241 event_source->display,
247 (event->type == GDK_ENTER_NOTIFY ||
248 event->type == GDK_LEAVE_NOTIFY) &&
249 event->crossing.window != NULL)
251 /* Handle focusing (in the case where no window manager is running */
252 handle_focus_change (&event->crossing);
255 #ifdef HAVE_XGENERICEVENTS
256 if (xevent->type == GenericEvent)
257 XFreeEventData (dpy, &xevent->xcookie);
264 gdk_check_xpending (GdkDisplay *display)
266 return XPending (GDK_DISPLAY_XDISPLAY (display));
270 gdk_event_source_prepare (GSource *source,
273 GdkDisplay *display = ((GdkEventSource*) source)->display;
276 gdk_threads_enter ();
280 if (display->event_pause_count > 0)
283 retval = (_gdk_event_queue_find_first (display) != NULL ||
284 gdk_check_xpending (display));
286 gdk_threads_leave ();
292 gdk_event_source_check (GSource *source)
294 GdkEventSource *event_source = (GdkEventSource*) source;
297 gdk_threads_enter ();
299 if (event_source->display->event_pause_count > 0)
301 else if (event_source->event_poll_fd.revents & G_IO_IN)
302 retval = (_gdk_event_queue_find_first (event_source->display) != NULL ||
303 gdk_check_xpending (event_source->display));
307 gdk_threads_leave ();
313 _gdk_x11_display_queue_events (GdkDisplay *display)
317 Display *xdisplay = GDK_DISPLAY_XDISPLAY (display);
318 GdkEventSource *event_source;
319 GdkX11Display *display_x11;
321 display_x11 = GDK_X11_DISPLAY (display);
322 event_source = (GdkEventSource *) display_x11->event_source;
324 while (!_gdk_event_queue_find_first (display) && XPending (xdisplay))
326 XNextEvent (xdisplay, &xevent);
334 if (XFilterEvent (&xevent, None))
338 event = gdk_event_source_translate_event (event_source, &xevent);
344 node = _gdk_event_queue_append (display, event);
345 _gdk_windowing_got_event (display, node, event, xevent.xany.serial);
351 gdk_event_source_dispatch (GSource *source,
352 GSourceFunc callback,
355 GdkDisplay *display = ((GdkEventSource*) source)->display;
358 gdk_threads_enter ();
360 event = gdk_display_get_event (display);
364 _gdk_event_emit (event);
366 gdk_event_free (event);
369 gdk_threads_leave ();
375 gdk_event_source_finalize (GSource *source)
377 GdkEventSource *event_source = (GdkEventSource *)source;
379 g_list_free (event_source->translators);
380 event_source->translators = NULL;
382 event_sources = g_list_remove (event_sources, source);
386 gdk_x11_event_source_new (GdkDisplay *display)
389 GdkEventSource *event_source;
390 GdkX11Display *display_x11;
391 int connection_number;
394 source = g_source_new (&event_funcs, sizeof (GdkEventSource));
395 name = g_strdup_printf ("GDK X11 Event source (%s)",
396 gdk_display_get_name (display));
397 g_source_set_name (source, name);
399 event_source = (GdkEventSource *) source;
400 event_source->display = display;
402 display_x11 = GDK_X11_DISPLAY (display);
403 connection_number = ConnectionNumber (display_x11->xdisplay);
405 event_source->event_poll_fd.fd = connection_number;
406 event_source->event_poll_fd.events = G_IO_IN;
407 g_source_add_poll (source, &event_source->event_poll_fd);
409 g_source_set_priority (source, GDK_PRIORITY_EVENTS);
410 g_source_set_can_recurse (source, TRUE);
411 g_source_attach (source, NULL);
413 event_sources = g_list_prepend (event_sources, source);
419 gdk_x11_event_source_add_translator (GdkEventSource *source,
420 GdkEventTranslator *translator)
422 g_return_if_fail (GDK_IS_EVENT_TRANSLATOR (translator));
424 source->translators = g_list_append (source->translators, translator);
428 gdk_x11_event_source_select_events (GdkEventSource *source,
430 GdkEventMask event_mask,
431 unsigned int extra_x_mask)
433 unsigned int xmask = extra_x_mask;
437 list = source->translators;
441 GdkEventTranslator *translator = list->data;
442 GdkEventMask translator_mask, mask;
444 translator_mask = _gdk_x11_event_translator_get_handled_events (translator);
445 mask = event_mask & translator_mask;
449 _gdk_x11_event_translator_select_window_events (translator, window, mask);
456 for (i = 0; i < _gdk_x11_event_mask_table_size; i++)
458 if (event_mask & (1 << (i + 1)))
459 xmask |= _gdk_x11_event_mask_table[i];
462 XSelectInput (GDK_DISPLAY_XDISPLAY (source->display), window, xmask);