2 * AT-SPI - Assistive Technology Service Provider Interface
3 * (Gnome Accessibility Project; http://developer.gnome.org/projects/gap)
5 * Copyright 2001 Sun Microsystems Inc.
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
17 * You should have received a copy of the GNU Library General Public
18 * License along with this library; if not, write to the
19 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 * Boston, MA 02111-1307, USA.
23 /* deviceeventcontroler.c: implement the DeviceEventController interface */
32 #include <X11/extensions/XTest.h>
33 #include <gdk/gdkx.h> /* TODO: hide dependency (wrap in single porting file) */
34 #include <gdk/gdkwindow.h>
36 #include <libspi/deviceeventcontroller.h>
38 /* Our parent Gtk object type */
39 #define PARENT_TYPE BONOBO_TYPE_OBJECT
41 /* A pointer to our parent object class */
42 static GObjectClass *spi_device_event_controller_parent_class;
44 static gboolean kbd_registered = FALSE;
46 static Display *display;
48 static Window root_window;
52 SPI_DEVICE_TYPE_MOUSE,
53 SPI_DEVICE_TYPE_LAST_DEFINED
54 } SpiDeviceTypeCategory;
56 struct _DEControllerListener {
58 SpiDeviceTypeCategory type;
61 typedef struct _DEControllerListener DEControllerListener;
63 struct _DEControllerKeyListener {
64 DEControllerListener listener;
65 Accessibility_KeySet *keys;
66 Accessibility_ControllerEventMask *mask;
67 Accessibility_KeyEventTypeSeq *typeseq;
68 gboolean is_system_global;
71 typedef struct _DEControllerKeyListener DEControllerKeyListener;
73 static gboolean _controller_register_with_devices (SpiDeviceEventController *controller);
74 static gboolean _controller_grab_keyboard (SpiDeviceEventController *controller);
76 static void controller_register_device_listener (SpiDeviceEventController *controller,
77 DEControllerListener *l,
78 CORBA_Environment *ev);
85 _compare_corba_objects (gconstpointer p1, gconstpointer p2)
89 retval = !CORBA_Object_is_equivalent ((CORBA_Object) p1, (CORBA_Object) p2, &ev);
92 fprintf (stderr, "comparing %p to %p; result %d\n",
100 _compare_listeners (gconstpointer p1, gconstpointer p2)
102 DEControllerListener *l1 = (DEControllerListener *) p1;
103 DEControllerListener *l2 = (DEControllerListener *) p2;
104 return _compare_corba_objects (l1->object, l2->object);
108 _eventmask_compare_value (gconstpointer p1, gconstpointer p2)
112 return (gint) (p1?1:(p2?-1:0));
114 d = ((long)((Accessibility_ControllerEventMask*)p2)->value) -
115 ((long)((Accessibility_ControllerEventMask*)p1)->value);
119 static DEControllerKeyListener *
120 dec_key_listener_new (CORBA_Object l,
121 const Accessibility_KeySet *keys,
122 const Accessibility_ControllerEventMask *mask,
123 const Accessibility_KeyEventTypeSeq *typeseq,
124 const CORBA_boolean is_system_global,
125 CORBA_Environment *ev)
127 DEControllerKeyListener *key_listener = g_new0 (DEControllerKeyListener, 1);
128 key_listener->listener.object = CORBA_Object_duplicate (l, ev);
129 key_listener->listener.type = SPI_DEVICE_TYPE_KBD;
130 key_listener->keys = keys;
131 key_listener->mask = mask;
132 key_listener->is_system_global = is_system_global;
138 controller_register_device_listener (SpiDeviceEventController *controller,
139 DEControllerListener *listener,
140 CORBA_Environment *ev)
142 Accessibility_ControllerEventMask *mask_ptr = NULL;
143 DEControllerKeyListener *key_listener;
145 switch (listener->type) {
146 case SPI_DEVICE_TYPE_KBD:
147 key_listener = (DEControllerKeyListener *) listener;
148 controller->key_listeners = g_list_append (controller->key_listeners, key_listener);
150 mask_ptr = (Accessibility_ControllerEventMask *)
151 g_list_find_custom (controller->keymask_list, (gpointer) key_listener->mask,
152 _eventmask_compare_value);
154 ++(mask_ptr->refcount);
157 if (key_listener->mask->refcount != (CORBA_unsigned_short) 1)
158 fprintf (stderr, "mask initial refcount is not 1!\n");
159 if (key_listener->mask->value > (CORBA_unsigned_long) 2048)
160 fprintf (stderr, "mask value looks invalid (%lu)\n",
161 (unsigned long) key_listener->mask->value);
163 fprintf (stderr, "appending mask with val=%lu\n",
164 (unsigned long) key_listener->mask->value);
165 mask_ptr = Accessibility_ControllerEventMask__alloc();
166 mask_ptr->value = key_listener->mask->value;
167 mask_ptr->refcount = (CORBA_unsigned_short) 1;
168 controller->keymask_list = g_list_append (controller->keymask_list,
169 (gpointer) mask_ptr);
172 case SPI_DEVICE_TYPE_MOUSE:
173 /* controller->mouse_listeners = g_list_append (controller->mouse_listeners,
174 CORBA_Object_duplicate (l, ev));*/
176 /* possibly this interface should NOT be used for mouse events ? */
182 controller_deregister_device_listener (SpiDeviceEventController *controller,
183 DEControllerListener *listener,
184 CORBA_Environment *ev)
186 Accessibility_ControllerEventMask *mask_ptr;
187 DEControllerKeyListener *key_listener;
189 switch (listener->type) {
190 case SPI_DEVICE_TYPE_KBD:
191 key_listener = (DEControllerKeyListener *) listener;
192 list_ptr = g_list_find_custom (controller->key_listeners, listener, _compare_listeners);
193 /* TODO: need a different custom compare func */
195 controller->key_listeners = g_list_remove (controller->key_listeners, list_ptr);
197 g_list_find_custom (controller->keymask_list, (gpointer) key_listener->mask,
198 _eventmask_compare_value);
201 mask_ptr = (Accessibility_ControllerEventMask *) list_ptr->data;
203 --mask_ptr->refcount;
204 if (!mask_ptr->refcount)
206 controller->keymask_list =
207 g_list_remove (controller->keymask_list, mask_ptr);
208 ; /* TODO: release any key grabs that are in place for this key mask */
212 case SPI_DEVICE_TYPE_MOUSE:
213 /* controller->mouse_listeners = g_list_append (controller->mouse_listeners,
214 CORBA_Object_duplicate (l, ev));*/
216 /* possibly this interface should NOT be used for mouse events ? */
222 _controller_register_with_devices (SpiDeviceEventController *controller)
224 gboolean retval = FALSE;
226 /* calls to device-specific implementations and routines go here */
227 /* register with: keyboard hardware code handler */
228 /* register with: (translated) keystroke handler */
230 fprintf (stderr, "About to request events on window %ld of display %p\n",
231 (unsigned long) GDK_ROOT_WINDOW(), GDK_DISPLAY());
233 /* We must open a new connection to the server to avoid clashing with the GDK event loop */
234 display = XOpenDisplay (g_getenv ("DISPLAY"));
235 root_window = DefaultRootWindow (display);
236 XSelectInput (display,
238 KeyPressMask | KeyReleaseMask);
239 /* register with: mouse hardware device handler? */
240 /* register with: mouse event handler */
246 notify_keylisteners (GList *key_listeners, Accessibility_KeyStroke *key_event, CORBA_Environment *ev)
248 int i, n_listeners = g_list_length (key_listeners);
249 gboolean is_consumed = FALSE;
250 for (i=0; i<n_listeners && !is_consumed; ++i)
252 Accessibility_KeystrokeListener ls;
253 ls = (Accessibility_KeystrokeListener)
254 g_list_nth_data (key_listeners, i);
255 if (!CORBA_Object_is_nil(ls, ev))
257 is_consumed = Accessibility_KeystrokeListener_keyEvent (ls, key_event, ev);
265 _check_key_event (SpiDeviceEventController *controller)
267 static gboolean initialized = FALSE;
268 XEvent *x_event = g_new0 (XEvent, 1);
269 XKeyEvent *x_key_event;
271 gboolean is_consumed = FALSE;
272 Accessibility_KeyStroke key_event;
273 static CORBA_Environment ev;
278 CORBA_exception_init (&ev);
281 while (XPending(display))
283 XNextEvent (display, x_event);
284 if (XFilterEvent (x_event, None)) continue;
285 if (x_event->type == KeyPress)
287 x_key_event = (XKeyEvent *)x_event;
288 keysym = XLookupKeysym (x_key_event, 0);
289 key_event.keyID = (CORBA_long)(keysym);
290 key_event.keycode = (CORBA_short) x_key_event->keycode;
291 key_event.type = Accessibility_KEY_PRESSED;
292 key_event.modifiers = (CORBA_unsigned_short)(x_key_event->state);
293 #ifdef SPI_KEYEVENT_DEBUG
295 "Key %lu pressed (%c), modifiers %d\n",
296 (unsigned long) keysym,
297 keysym ? (int) keysym : '*',
298 (int) x_key_event->state);
301 fprintf (stderr, "%s%c",
302 (x_key_event->state & Mod1Mask)?"Alt-":"",
303 ((x_key_event->state & ShiftMask)^(x_key_event->state & LockMask))?
304 g_ascii_toupper (keysym) : g_ascii_tolower (keysym));
305 #endif /* SPI_DEBUG */
309 #ifdef SPI_KEYEVENT_DEBUG
310 fprintf (stderr, "other event, type %d\n", (int) x_event->type);
313 /* relay to listeners, and decide whether to consume it or not */
314 is_consumed = notify_keylisteners (controller->key_listeners, &key_event, &ev);
318 XAllowEvents (display, SyncKeyboard, CurrentTime);
322 XAllowEvents (display, ReplayKeyboard, CurrentTime);
325 XUngrabKey (display, AnyKey, AnyModifier, root_window);
326 return _controller_grab_keyboard (controller);
330 _controller_grab_keyboard (SpiDeviceEventController *controller)
332 GList *maskList = controller->keymask_list;
335 last_mask = g_list_length (maskList);
338 * masks known to work with default RH 7.1:
339 * 0 (no mods), LockMask, Mod1Mask, Mod2Mask, ShiftMask,
340 * ShiftMask|LockMask, Mod1Mask|LockMask, Mod2Mask|LockMask,
341 * ShiftMask|Mod1Mask, ShiftMask|Mod2Mask, Mod1Mask|Mod2Mask,
342 * ShiftMask|LockMask|Mod1Mask, ShiftMask|LockMask|Mod2Mask,
344 * ControlMask grabs are broken, must be in use already
347 for (i=0; i < last_mask; ++i)
349 Accessibility_ControllerEventMask *mask
350 = (Accessibility_ControllerEventMask *)g_list_nth_data (maskList, i);
351 unsigned long maskVal = 0xFFFFFFFF;
352 if (mask) maskVal = (unsigned long) mask->value;
353 #ifdef SPI_KEYEVENT_DEBUG
354 fprintf (stderr, "mask=%lx\n", maskVal);
356 if (!(maskVal & ControlMask))
365 /* TODO: check call for errors and return FALSE if error occurs */
367 return FALSE; /* can't do control key yet */
374 * Implemented GObject::finalize
377 spi_device_event_controller_object_finalize (GObject *object)
381 fprintf(stderr, "spi_device_event_controller_object_finalize called\n");
383 spi_device_event_controller_parent_class->finalize (object);
387 * CORBA Accessibility::DeviceEventController::registerKeystrokeListener
388 * method implementation
391 impl_register_keystroke_listener (PortableServer_Servant servant,
392 const Accessibility_KeystrokeListener l,
393 const Accessibility_KeySet *keys,
394 const Accessibility_ControllerEventMask *mask,
395 const Accessibility_KeyEventTypeSeq *type,
396 const CORBA_boolean is_system_global,
397 CORBA_Environment *ev)
399 SpiDeviceEventController *controller = SPI_DEVICE_EVENT_CONTROLLER (
400 bonobo_object_from_servant (servant));
401 DEControllerKeyListener *dec_listener;
403 fprintf (stderr, "registering keystroke listener %p with maskVal %lu\n",
404 (void *) l, (unsigned long) mask->value);
406 dec_listener = dec_key_listener_new (l, keys, mask, type, is_system_global, ev);
407 controller_register_device_listener (controller, (DEControllerListener *) dec_listener, ev);
411 * CORBA Accessibility::DeviceEventController::deregisterKeystrokeListener
412 * method implementation
415 impl_deregister_keystroke_listener (PortableServer_Servant servant,
416 const Accessibility_KeystrokeListener l,
417 const Accessibility_KeySet *keys,
418 const Accessibility_ControllerEventMask *mask,
419 const Accessibility_KeyEventTypeSeq *type,
420 const CORBA_boolean is_system_global,
421 CORBA_Environment *ev)
423 SpiDeviceEventController *controller = SPI_DEVICE_EVENT_CONTROLLER (
424 bonobo_object_from_servant (servant));
425 DEControllerKeyListener *key_listener = dec_key_listener_new (l,
432 fprintf (stderr, "deregistering keystroke listener %p with maskVal %lu\n",
433 (void *) l, (unsigned long) mask->value);
435 controller_deregister_device_listener(controller,
436 (DEControllerListener *) key_listener,
441 * CORBA Accessibility::DeviceEventController::registerMouseListener
442 * method implementation
446 impl_register_mouse_listener (PortableServer_Servant servant,
447 const Accessibility_MouseListener *l,
448 CORBA_Environment *ev)
450 SpiDeviceEventController *controller = SPI_DEVICE_EVENT_CONTROLLER (
451 bonobo_object_from_servant (servant));
453 fprintf (stderr, "registering mouse listener %p\n", l);
455 controller_register_device_listener(controller, DEVICE_TYPE_MOUSE, l, keys, mask, ev);
460 keycode_for_keysym (long keysym)
462 return XKeysymToKeycode (display, (KeySym) keysym);
466 * CORBA Accessibility::DeviceEventController::registerKeystrokeListener
467 * method implementation
470 impl_generate_key_event (PortableServer_Servant servant,
471 const CORBA_long keycode,
472 const Accessibility_KeySynthType synth_type,
473 CORBA_Environment *ev)
477 fprintf (stderr, "synthesizing keystroke %ld\n", (long) keycode);
479 /* TODO: hide/wrap/remove X dependency */
481 /* TODO: be accessX-savvy so that keyrelease occurs after sufficient timeout */
484 * TODO: when initializing, query for XTest extension before using,
485 * and fall back to XSendEvent() if XTest is not available.
490 case Accessibility_KEY_PRESS:
491 XTestFakeKeyEvent (GDK_DISPLAY(), (unsigned int) keycode, True, CurrentTime);
493 case Accessibility_KEY_PRESSRELEASE:
494 XTestFakeKeyEvent (GDK_DISPLAY(), (unsigned int) keycode, True, CurrentTime);
495 case Accessibility_KEY_RELEASE:
496 XTestFakeKeyEvent (GDK_DISPLAY(), (unsigned int) keycode, False, CurrentTime);
498 case Accessibility_KEY_SYM:
499 key_synth_code = keycode_for_keysym (keycode);
500 XTestFakeKeyEvent (GDK_DISPLAY(), (unsigned int) key_synth_code, True, CurrentTime);
501 XTestFakeKeyEvent (GDK_DISPLAY(), (unsigned int) key_synth_code, False, CurrentTime);
507 * CORBA Accessibility::DeviceEventController::generateMouseEvent
508 * method implementation
511 impl_generate_mouse_event (PortableServer_Servant servant,
514 const CORBA_char *eventName,
515 CORBA_Environment *ev)
518 fprintf (stderr, "generating mouse %s event at %ld, %ld\n", eventName, x, y);
523 spi_device_event_controller_class_init (SpiDeviceEventControllerClass *klass)
525 GObjectClass * object_class = (GObjectClass *) klass;
526 POA_Accessibility_DeviceEventController__epv *epv = &klass->epv;
527 spi_device_event_controller_parent_class = g_type_class_peek_parent (klass);
529 object_class->finalize = spi_device_event_controller_object_finalize;
531 epv->registerKeystrokeListener = impl_register_keystroke_listener;
532 epv->deregisterKeystrokeListener = impl_deregister_keystroke_listener;
533 /* epv->registerMouseListener = impl_register_mouse_listener; */
534 epv->generateKeyEvent = impl_generate_key_event;
535 epv->generateMouseEvent = impl_generate_mouse_event;
536 klass->check_key_event = _check_key_event;
540 spi_device_event_controller_init (SpiDeviceEventController *device_event_controller)
542 device_event_controller->key_listeners = NULL;
543 device_event_controller->mouse_listeners = NULL;
544 device_event_controller->keymask_list = NULL;
545 kbd_registered = _controller_register_with_devices (device_event_controller);
549 spi_device_event_controller_check_key_event (SpiDeviceEventController *controller)
551 SpiDeviceEventControllerClass *klass = SPI_DEVICE_EVENT_CONTROLLER_GET_CLASS (controller);
552 if (klass->check_key_event)
553 return (klass->check_key_event) (controller);
557 SpiDeviceEventController *
558 spi_device_event_controller_new (void *registryp)
560 SpiRegistry *registry = SPI_REGISTRY (registryp);
561 SpiDeviceEventController *retval = g_object_new (
562 SPI_DEVICE_EVENT_CONTROLLER_TYPE, NULL);
563 retval->registry = registry;
564 bonobo_object_ref (registry);
568 BONOBO_TYPE_FUNC_FULL (SpiDeviceEventController,
569 Accessibility_DeviceEventController,
571 spi_device_event_controller);