2 * AT-SPI - Assistive Technology Service Provider Interface
3 * (Gnome Accessibility Project; http://developer.gnome.org/projects/gap)
5 * Copyright 2001, 2002 Sun Microsystems Inc.,
6 * Copyright 2001, 2002 Ximian, Inc.
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Library General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Library General Public License for more details.
18 * You should have received a copy of the GNU Library General Public
19 * License along with this library; if not, write to the
20 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 * Boston, MA 02111-1307, USA.
28 #include <sys/socket.h>
29 #include <netinet/in.h>
31 #undef MAGNIFIER_ENABLED
32 #include "../cspi/spi-private.h" /* A hack for now */
36 static void report_focus_event (const AccessibleEvent *event, void *user_data);
37 static void report_generic_event (const AccessibleEvent *event, void *user_data);
38 static void report_window_event (const AccessibleEvent *event, void *user_data);
39 static void report_text_event (const AccessibleEvent *event, void *user_data);
40 static void report_button_press (const AccessibleEvent *event, void *user_data);
41 static void check_property_change (const AccessibleEvent *event, void *user_data);
42 static SPIBoolean report_command_key_event (const AccessibleKeystroke *stroke, void *user_data);
43 static SPIBoolean report_ordinary_key_event (const AccessibleKeystroke *stroke, void *user_data);
44 static void get_environment_vars (void);
46 static int _festival_init ();
47 static void _festival_say (const char *text, const char *voice, SPIBoolean shutup);
48 static void _festival_write (const char *buff, int fd);
51 static void print_accessible_tree (Accessible *accessible, char *prefix);
54 #ifdef MAGNIFIER_ENABLED
55 static SPIBoolean use_magnifier = FALSE;
58 static SPIBoolean use_festival = FALSE;
59 static SPIBoolean festival_chatty = FALSE;
60 static SPIBoolean name_changed = FALSE;
62 static AccessibleEventListener *focus_listener;
63 static AccessibleEventListener *property_listener;
64 static AccessibleEventListener *generic_listener;
65 static AccessibleEventListener *window_listener;
66 static AccessibleEventListener *button_listener;
67 static AccessibleEventListener *text_listener;
68 static AccessibleKeystrokeListener *command_key_listener;
69 static AccessibleKeystrokeListener *ordinary_key_listener;
70 static AccessibleKeySet *command_keyset;
73 main (int argc, char **argv)
80 Accessible *application;
83 if ((argc > 1) && (!strncmp (argv[1], "-h", 2)))
85 printf ("Usage: simple-at\n");
86 printf ("\tEnvironment variables used:\n\t\tFESTIVAL\n\t\tMAGNIFIER\n\t\tFESTIVAL_CHATTY\n");
90 modules = g_getenv ("GTK_MODULES");
91 if (!modules || modules [0] == '\0')
93 putenv ("GTK_MODULES=");
99 focus_listener = SPI_createAccessibleEventListener (report_focus_event, NULL);
100 property_listener = SPI_createAccessibleEventListener (check_property_change, NULL);
101 generic_listener = SPI_createAccessibleEventListener (report_generic_event, NULL);
102 window_listener = SPI_createAccessibleEventListener (report_window_event, NULL);
103 text_listener = SPI_createAccessibleEventListener (report_text_event, NULL);
104 button_listener = SPI_createAccessibleEventListener (report_button_press, NULL);
105 SPI_registerGlobalEventListener (focus_listener, "focus:");
106 SPI_registerGlobalEventListener (property_listener, "object:property-change");
107 /* :accessible-selection"); */
108 SPI_registerGlobalEventListener (property_listener, "object:property-change:accessible-name");
109 SPI_registerGlobalEventListener (generic_listener, "object:selection-changed");
110 SPI_registerGlobalEventListener (generic_listener, "object:children-changed");
111 SPI_registerGlobalEventListener (generic_listener, "object:visible-data-changed");
112 SPI_registerGlobalEventListener (generic_listener, "object:text-selection-changed");
113 SPI_registerGlobalEventListener (text_listener, "object:text-caret-moved");
114 SPI_registerGlobalEventListener (text_listener, "object:text-changed");
115 SPI_registerGlobalEventListener (button_listener, "Gtk:GtkWidget:button-press-event");
116 SPI_registerGlobalEventListener (window_listener, "window:minimize");
117 n_desktops = SPI_getDesktopCount ();
119 for (i=0; i<n_desktops; ++i)
121 desktop = SPI_getDesktop (i);
122 s = Accessible_getName (desktop);
123 fprintf (stderr, "desktop %d name: %s\n", i, s);
125 n_apps = Accessible_getChildCount (desktop);
126 for (j=0; j<n_apps; ++j)
128 application = Accessible_getChildAtIndex (desktop, j);
129 s = Accessible_getName (application);
130 fprintf (stderr, "app %d name: %s\n", j, s);
132 print_accessible_tree (application, "*");
135 Accessible_unref (application);
137 Accessible_unref (desktop);
140 /* prepare the keyboard snoopers */
141 command_key_listener = SPI_createAccessibleKeystrokeListener (report_command_key_event, NULL);
142 ordinary_key_listener = SPI_createAccessibleKeystrokeListener (report_ordinary_key_event, NULL);
144 command_keyset = SPI_createAccessibleKeySet (11, "qmf23456789", NULL, NULL);
146 /* will listen only to Control-Alt-q KeyPress events */
147 SPI_registerAccessibleKeystrokeListener(command_key_listener,
149 SPI_KEYMASK_ALT | SPI_KEYMASK_CONTROL,
150 (unsigned long) ( SPI_KEY_PRESSED ),
151 SPI_KEYLISTENER_ALL_WINDOWS);
153 /* will listen only to CAPSLOCK key events, both press and release */
154 SPI_registerAccessibleKeystrokeListener(ordinary_key_listener,
155 (AccessibleKeySet *) SPI_KEYSET_ALL_KEYS,
156 SPI_KEYMASK_SHIFTLOCK,
157 (unsigned long) ( SPI_KEY_PRESSED | SPI_KEY_RELEASED ),
158 SPI_KEYLISTENER_NOSYNC);
160 get_environment_vars ();
164 putenv ("AT_BRIDGE_SHUTDOWN=1");
170 get_environment_vars (void)
172 if (g_getenv ("FESTIVAL"))
174 fprintf (stderr, "Using festival\n");
176 if (g_getenv ("FESTIVAL_CHATTY"))
178 festival_chatty = TRUE;
181 #ifdef MAGNIFIER_ENABLED
182 if (g_getenv ("MAGNIFIER"))
184 fprintf (stderr, "Using magnifier\n");
185 use_magnifier = TRUE;
189 fprintf (stderr, "Not using magnifier\n");
195 fprintf (stderr, "No speech output\n");
201 print_accessible_tree (Accessible *accessible, char *prefix)
207 char *parent_name = NULL;
208 char *parent_role = NULL;
209 char child_prefix[100];
213 strncpy (child_prefix, prefix, 98);
214 strcat (child_prefix, "*");
215 parent = Accessible_getParent (accessible);
218 parent_name = Accessible_getName (parent);
219 parent_role = Accessible_getRoleName (parent);
220 Accessible_unref (parent);
222 name = Accessible_getName (accessible);
223 role_name = Accessible_getRoleName (accessible);
224 fprintf (stdout, "%sAccessible [%s] \"%s\"; parent [%s] %s.\n",
225 prefix, role_name, name, parent_role, parent_name);
226 SPI_freeString (name);
227 SPI_freeString (role_name);
228 SPI_freeString (parent_name);
229 SPI_freeString (parent_role);
230 n_children = Accessible_getChildCount (accessible);
231 for (i = 0; i < n_children; ++i)
233 child = Accessible_getChildAtIndex (accessible, i);
234 print_accessible_tree (child, child_prefix);
235 Accessible_unref (child);
241 report_focussed_accessible (Accessible *obj, SPIBoolean shutup_previous_speech)
245 long x, y, width, height;
246 /* hack for GUADEC demo, to make sure name changes are spoken */
247 shutup_previous_speech = (shutup_previous_speech && !name_changed);
253 s = Accessible_getRoleName (obj);
254 _festival_say (s, "voice_don_diphone", shutup_previous_speech);
257 fprintf (stderr, "getting Name\n");
258 s = Accessible_getName (obj);
259 _festival_say (s, "voice_kal_diphone",
260 shutup_previous_speech || festival_chatty);
264 if (Accessible_isComponent (obj))
266 AccessibleComponent *component = Accessible_getComponent (obj);
267 AccessibleComponent_getExtents (component, &x, &y, &width, &height,
268 SPI_COORD_TYPE_SCREEN);
269 fprintf (stderr, "Bounding box: (%ld, %ld) ; (%ld, %ld)\n",
270 x, y, x+width, y+height);
271 if (Accessible_isText (obj))
273 long x0, y0, xN, yN, w0, h0, wN, hN, nchars;
274 AccessibleText *text = Accessible_getText (obj);
275 nchars = AccessibleText_getCharacterCount (text);
278 AccessibleText_getCharacterExtents (text, 0, &x0, &y0, &w0, &h0,
279 SPI_COORD_TYPE_SCREEN);
280 AccessibleText_getCharacterExtents (text, nchars-1, &xN, &yN, &wN, &hN,
281 SPI_COORD_TYPE_SCREEN);
283 width = MAX (x0 + w0, xN + wN) - x;
284 fprintf (stderr, "Text bounding box: (%ld, %ld) ; (%ld, %ld)\n",
285 x, y, x+width, y+height);
288 #ifdef MAGNIFIER_ENABLED
290 magnifier_set_roi ((short) 0, x, y, width, height);
296 if (Accessible_isValue (obj))
298 AccessibleValue *value = Accessible_getValue (obj);
299 fprintf (stderr, "Current value = %f, min = %f; max = %f\n",
300 AccessibleValue_getCurrentValue (value),
301 AccessibleValue_getMinimumValue (value),
302 AccessibleValue_getMaximumValue (value));
304 /* if this is a text object, speak the first sentence. */
306 if (Accessible_isText(obj))
309 AccessibleText *text_interface;
310 long start_offset, end_offset;
311 char *first_sentence = "empty";
312 text_interface = Accessible_getText (obj);
313 first_sentence = AccessibleText_getTextAtOffset (
314 text_interface, (long) 0, SPI_TEXT_BOUNDARY_SENTENCE_START, &start_offset, &end_offset);
315 if (first_sentence && use_festival)
317 _festival_say(first_sentence, "voice_don_diphone", FALSE);
318 SPI_freeString (first_sentence);
320 len = AccessibleText_getCharacterCount (text_interface);
321 s = AccessibleText_getText (text_interface, 0, len);
322 fprintf (stderr, "done reporting on focussed object, text=%s\n", s);
327 report_focus_event (const AccessibleEvent *event, void *user_data)
331 g_return_if_fail (event->source != NULL);
332 s = Accessible_getName (event->source);
335 fprintf (stderr, "%s event from %s\n", event->type, s);
337 report_focussed_accessible (event->source, TRUE);
339 Accessible_getParent (event->source);
340 name_changed = FALSE;
344 report_generic_event (const AccessibleEvent *event, void *user_data)
346 fprintf (stderr, "%s event received\n", event->type);
350 report_window_event (const AccessibleEvent *event, void *user_data)
352 fprintf (stderr, "%s event received\n", event->type);
356 report_text_event (const AccessibleEvent *event, void *user_data)
358 AccessibleText *text = Accessible_getText (event->source);
359 fprintf (stderr, "%s event received\n", event->type);
360 #ifdef MAGNIFIER_ENABLED
361 if (use_magnifier && strcmp (event->type, "object:text-changed"))
363 long offset = AccessibleText_getCaretOffset (text);
365 fprintf (stderr, "offset %d\n", (int) offset);
366 AccessibleText_getCharacterExtents (text, offset, &x, &y, &w, &h,
367 SPI_COORD_TYPE_SCREEN);
368 fprintf (stderr, "new roi %d %d %d %d\n", (int) x, (int) y, (int) w, (int) h);
369 magnifier_set_roi ((short) 0, x, y, w, h);
372 if (!strcmp (event->type, "object:text-changed"))
375 char *new_text = AccessibleText_getTextAtOffset (text, (long) event->detail1, SPI_TEXT_BOUNDARY_WORD_START, &start, &end);
376 _festival_say (new_text, "voice_kal_diphone", FALSE);
377 fprintf (stderr, "text changed: %s", new_text ? new_text : "");
378 SPI_freeString (new_text);
383 char *word_text = AccessibleText_getTextAtOffset (text, (long) event->detail1, SPI_TEXT_BOUNDARY_WORD_START, &start, &end);
384 char *sentence_text = AccessibleText_getTextAtOffset (text, (long) event->detail1, SPI_TEXT_BOUNDARY_SENTENCE_START, &start, &end);
385 fprintf (stderr, "text changed: word %s; sentence %s at %d",
386 (word_text ? word_text : ""),
387 (sentence_text ? sentence_text : ""),
389 if (word_text) SPI_freeString (word_text);
390 if (sentence_text) SPI_freeString (sentence_text);
395 report_button_press (const AccessibleEvent *event, void *user_data)
399 g_return_if_fail (event->source != NULL);
401 s = Accessible_getName (event->source);
403 fprintf (stderr, "%s event from %s\n", event->type, s);
405 s = Accessible_getDescription (event->source);
406 fprintf (stderr, "Object description %s\n", s);
411 check_property_change (const AccessibleEvent *event, void *user_data)
413 AccessibleSelection *selection = Accessible_getSelection (event->source);
417 fprintf (stderr, "property change event!\n");
420 n_selections = (int) AccessibleSelection_getNSelectedChildren (selection);
421 s = Accessible_getName (event->source);
422 fprintf (stderr, "(Property) %s event from %s, %d selected children\n",
423 event->type, s, n_selections);
425 /* for now, speak entire selection set */
426 for (i=0; i<n_selections; ++i)
428 Accessible *obj = AccessibleSelection_getSelectedChild (selection, (long) i);
429 g_return_if_fail (obj);
430 s = Accessible_getName (obj);
431 fprintf (stderr, "Child %d, name=%s\n", i, s);
433 report_focussed_accessible (obj, i==0);
436 else if (!strcmp (event->type, "object:property-change:accessible-name"))
439 report_focussed_accessible (event->source, TRUE);
443 fprintf (stderr, "Property change %s received\n", event->type);
450 SPI_deregisterGlobalEventListenerAll (focus_listener);
451 AccessibleEventListener_unref (focus_listener);
453 SPI_deregisterGlobalEventListenerAll (property_listener);
454 AccessibleEventListener_unref (property_listener);
456 SPI_deregisterGlobalEventListenerAll (generic_listener);
457 AccessibleEventListener_unref (generic_listener);
459 SPI_deregisterGlobalEventListenerAll (text_listener);
460 AccessibleEventListener_unref (text_listener);
462 SPI_deregisterGlobalEventListenerAll (button_listener);
463 AccessibleEventListener_unref (button_listener);
465 SPI_deregisterAccessibleKeystrokeListener (command_key_listener, SPI_KEYMASK_ALT | SPI_KEYMASK_CONTROL);
466 AccessibleKeystrokeListener_unref (command_key_listener);
467 SPI_freeAccessibleKeySet (command_keyset);
469 SPI_deregisterAccessibleKeystrokeListener (ordinary_key_listener, SPI_KEYMASK_SHIFTLOCK);
470 AccessibleKeystrokeListener_unref (ordinary_key_listener);
476 is_command_key (const AccessibleKeystroke *key)
483 return TRUE; /* not reached */
484 #ifdef MAGNIFIER_ENABLED
487 use_magnifier = ! use_magnifier;
488 fprintf (stderr, "%ssing magnifier\n", use_magnifier ? "U" : "Not u");
493 use_festival = ! use_festival;
494 fprintf (stderr, "%speech output\n", use_festival ? "S" : "No s");
502 report_command_key_event (const AccessibleKeystroke *key, void *user_data)
504 fprintf (stderr, "Command KeyEvent %s%c (keycode %d); string=%s; time=%lx\n",
505 (key->modifiers & SPI_KEYMASK_ALT)?"Alt-":"",
506 ((key->modifiers & SPI_KEYMASK_SHIFT)^(key->modifiers & SPI_KEYMASK_SHIFTLOCK))?
507 (char) toupper((int) key->keyID) : (char) tolower((int) key->keyID),
510 (long int) key->timestamp);
511 return is_command_key (key);
516 report_ordinary_key_event (const AccessibleKeystroke *key, void *user_data)
518 fprintf (stderr, "Received key event:\tsym %ld\n\tmods %x\n\tcode %d\n\tstring=\'%s\'\n\ttime %lx\n",
520 (unsigned int) key->modifiers,
523 (long int) key->timestamp);
531 struct sockaddr_in name;
534 name.sin_family = AF_INET;
535 name.sin_port = htons (1314);
536 name.sin_addr.s_addr = htonl(INADDR_ANY);
537 fd = socket (PF_INET, SOCK_STREAM, 0);
539 while (connect(fd, (struct sockaddr *) &name, sizeof (name)) < 0) {
546 _festival_write ("(audio_mode'async)\n", fd);
547 _festival_write ("(Parameter.set 'Duration_Model 'Tree_ZScore)\n", fd);
548 _festival_write ("(Parameter.set 'Duration_Stretch 0.75)\n", fd);
553 _festival_say (const char *text, const char *voice, SPIBoolean shutup)
559 static gchar voice_spec[32];
563 fd = _festival_init ();
566 fprintf (stderr, "saying text: %s\n", text);
568 quoted = g_malloc(64+strlen(text)*2);
570 sprintf (prefix, "(SayText \"");
572 strncpy(quoted, prefix, 10);
573 p = quoted+strlen(prefix);
575 if ( *text == '\\' || *text == '"' )
584 if (shutup) _festival_write ("(audio_mode'shutup)\n", fd);
585 if (voice && (strncmp (voice, (char *) (voice_spec+1), strlen(voice))))
587 snprintf (voice_spec, 32, "(%s)\n", voice);
588 _festival_write (voice_spec, fd);
589 _festival_write ("(Parameter.set 'Duration_Model 'Tree_ZScore)\n", fd);
590 _festival_write ("(Parameter.set 'Duration_Stretch 0.75)\n", fd);
593 _festival_write (quoted, fd);
599 _festival_write (const gchar *command_string, int fd)
601 fprintf(stderr, command_string);
606 write(fd, command_string, strlen(command_string));