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.
27 #include <sys/socket.h>
28 #include <netinet/in.h>
30 #undef MAGNIFIER_ENABLED
31 #include "../cspi/spi-private.h" /* A hack for now */
35 static void report_focus_event (const AccessibleEvent *event, void *user_data);
36 static void report_generic_event (const AccessibleEvent *event, void *user_data);
37 static void report_window_event (const AccessibleEvent *event, void *user_data);
38 static void report_text_event (const AccessibleEvent *event, void *user_data);
39 static void report_button_press (const AccessibleEvent *event, void *user_data);
40 static void check_property_change (const AccessibleEvent *event, void *user_data);
41 static SPIBoolean report_command_key_event (const AccessibleKeystroke *stroke, void *user_data);
42 static SPIBoolean report_ordinary_key_event (const AccessibleKeystroke *stroke, void *user_data);
43 static void get_environment_vars (void);
45 static int _festival_init ();
46 static void _festival_say (const char *text, const char *voice, SPIBoolean shutup);
47 static void _festival_write (const char *buff, int fd);
50 static void print_accessible_tree (Accessible *accessible, char *prefix);
53 #ifdef MAGNIFIER_ENABLED
54 static SPIBoolean use_magnifier = FALSE;
57 static SPIBoolean use_festival = FALSE;
58 static SPIBoolean festival_chatty = FALSE;
59 static SPIBoolean name_changed = FALSE;
61 static AccessibleEventListener *focus_listener;
62 static AccessibleEventListener *property_listener;
63 static AccessibleEventListener *generic_listener;
64 static AccessibleEventListener *window_listener;
65 static AccessibleEventListener *button_listener;
66 static AccessibleEventListener *text_listener;
67 static AccessibleKeystrokeListener *command_key_listener;
68 static AccessibleKeystrokeListener *ordinary_key_listener;
69 static AccessibleKeySet *command_keyset;
72 main (int argc, char **argv)
79 Accessible *application;
82 if ((argc > 1) && (!strncmp (argv[1], "-h", 2)))
84 printf ("Usage: simple-at\n");
85 printf ("\tEnvironment variables used:\n\t\tFESTIVAL\n\t\tMAGNIFIER\n\t\tFESTIVAL_CHATTY\n");
89 modules = g_getenv ("GTK_MODULES");
90 if (!modules || modules [0] == '\0')
92 putenv ("GTK_MODULES=");
98 focus_listener = SPI_createAccessibleEventListener (report_focus_event, NULL);
99 property_listener = SPI_createAccessibleEventListener (check_property_change, NULL);
100 generic_listener = SPI_createAccessibleEventListener (report_generic_event, NULL);
101 window_listener = SPI_createAccessibleEventListener (report_window_event, NULL);
102 text_listener = SPI_createAccessibleEventListener (report_text_event, NULL);
103 button_listener = SPI_createAccessibleEventListener (report_button_press, NULL);
104 SPI_registerGlobalEventListener (focus_listener, "focus:");
105 SPI_registerGlobalEventListener (property_listener, "object:property-change");
106 /* :accessible-selection"); */
107 SPI_registerGlobalEventListener (property_listener, "object:property-change:accessible-name");
108 SPI_registerGlobalEventListener (generic_listener, "object:selection-changed");
109 SPI_registerGlobalEventListener (generic_listener, "object:children-changed");
110 SPI_registerGlobalEventListener (generic_listener, "object:visible-data-changed");
111 SPI_registerGlobalEventListener (generic_listener, "object:text-selection-changed");
112 SPI_registerGlobalEventListener (text_listener, "object:text-caret-moved");
113 SPI_registerGlobalEventListener (text_listener, "object:text-changed");
114 SPI_registerGlobalEventListener (button_listener, "Gtk:GtkWidget:button-press-event");
115 SPI_registerGlobalEventListener (window_listener, "window:minimize");
116 n_desktops = SPI_getDesktopCount ();
118 for (i=0; i<n_desktops; ++i)
120 desktop = SPI_getDesktop (i);
121 s = Accessible_getName (desktop);
122 fprintf (stderr, "desktop %d name: %s\n", i, s);
124 n_apps = Accessible_getChildCount (desktop);
125 for (j=0; j<n_apps; ++j)
127 application = Accessible_getChildAtIndex (desktop, j);
128 s = Accessible_getName (application);
129 fprintf (stderr, "app %d name: %s\n", j, s);
131 print_accessible_tree (application, "*");
134 Accessible_unref (application);
136 Accessible_unref (desktop);
139 /* prepare the keyboard snoopers */
140 command_key_listener = SPI_createAccessibleKeystrokeListener (report_command_key_event, NULL);
141 ordinary_key_listener = SPI_createAccessibleKeystrokeListener (report_ordinary_key_event, NULL);
143 command_keyset = SPI_createAccessibleKeySet (11, "qmf23456789", NULL, NULL);
145 /* will listen only to Control-Alt-q KeyPress events */
146 SPI_registerAccessibleKeystrokeListener(command_key_listener,
148 SPI_KEYMASK_ALT | SPI_KEYMASK_CONTROL,
149 (unsigned long) ( SPI_KEY_PRESSED ),
150 SPI_KEYLISTENER_ALL_WINDOWS);
152 /* will listen only to CAPSLOCK key events, both press and release */
153 SPI_registerAccessibleKeystrokeListener(ordinary_key_listener,
154 (AccessibleKeySet *) SPI_KEYSET_ALL_KEYS,
155 SPI_KEYMASK_SHIFTLOCK,
156 (unsigned long) ( SPI_KEY_PRESSED | SPI_KEY_RELEASED ),
157 SPI_KEYLISTENER_NOSYNC);
159 get_environment_vars ();
163 putenv ("AT_BRIDGE_SHUTDOWN=1");
169 get_environment_vars (void)
171 if (g_getenv ("FESTIVAL"))
173 fprintf (stderr, "Using festival\n");
175 if (g_getenv ("FESTIVAL_CHATTY"))
177 festival_chatty = TRUE;
180 #ifdef MAGNIFIER_ENABLED
181 if (g_getenv ("MAGNIFIER"))
183 fprintf (stderr, "Using magnifier\n");
184 use_magnifier = TRUE;
188 fprintf (stderr, "Not using magnifier\n");
194 fprintf (stderr, "No speech output\n");
200 print_accessible_tree (Accessible *accessible, char *prefix)
206 char *parent_name = NULL;
207 char *parent_role = NULL;
208 char child_prefix[100];
212 strncpy (child_prefix, prefix, 98);
213 strcat (child_prefix, "*");
214 parent = Accessible_getParent (accessible);
217 parent_name = Accessible_getName (parent);
218 parent_role = Accessible_getRoleName (parent);
219 Accessible_unref (parent);
221 name = Accessible_getName (accessible);
222 role_name = Accessible_getRoleName (accessible);
223 fprintf (stdout, "%sAccessible [%s] \"%s\"; parent [%s] %s.\n",
224 prefix, role_name, name, parent_role, parent_name);
225 SPI_freeString (name);
226 SPI_freeString (role_name);
227 SPI_freeString (parent_name);
228 SPI_freeString (parent_role);
229 n_children = Accessible_getChildCount (accessible);
230 for (i = 0; i < n_children; ++i)
232 child = Accessible_getChildAtIndex (accessible, i);
233 print_accessible_tree (child, child_prefix);
234 Accessible_unref (child);
240 report_focussed_accessible (Accessible *obj, SPIBoolean shutup_previous_speech)
244 long x, y, width, height;
245 /* hack for GUADEC demo, to make sure name changes are spoken */
246 shutup_previous_speech = (shutup_previous_speech && !name_changed);
252 s = Accessible_getRoleName (obj);
253 _festival_say (s, "voice_don_diphone", shutup_previous_speech);
256 fprintf (stderr, "getting Name\n");
257 s = Accessible_getName (obj);
258 _festival_say (s, "voice_kal_diphone",
259 shutup_previous_speech || festival_chatty);
263 if (Accessible_isComponent (obj))
265 AccessibleComponent *component = Accessible_getComponent (obj);
266 AccessibleComponent_getExtents (component, &x, &y, &width, &height,
267 SPI_COORD_TYPE_SCREEN);
268 fprintf (stderr, "Bounding box: (%ld, %ld) ; (%ld, %ld)\n",
269 x, y, x+width, y+height);
270 if (Accessible_isText (obj))
272 long x0, y0, xN, yN, w0, h0, wN, hN, nchars;
273 AccessibleText *text = Accessible_getText (obj);
274 nchars = AccessibleText_getCharacterCount (text);
277 AccessibleText_getCharacterExtents (text, 0, &x0, &y0, &w0, &h0,
278 SPI_COORD_TYPE_SCREEN);
279 AccessibleText_getCharacterExtents (text, nchars-1, &xN, &yN, &wN, &hN,
280 SPI_COORD_TYPE_SCREEN);
282 width = MAX (x0 + w0, xN + wN) - x;
283 fprintf (stderr, "Text bounding box: (%ld, %ld) ; (%ld, %ld)\n",
284 x, y, x+width, y+height);
287 #ifdef MAGNIFIER_ENABLED
289 magnifier_set_roi ((short) 0, x, y, width, height);
295 if (Accessible_isValue (obj))
297 AccessibleValue *value = Accessible_getValue (obj);
298 fprintf (stderr, "Current value = %f, min = %f; max = %f\n",
299 AccessibleValue_getCurrentValue (value),
300 AccessibleValue_getMinimumValue (value),
301 AccessibleValue_getMaximumValue (value));
303 /* if this is a text object, speak the first sentence. */
305 if (Accessible_isText(obj))
308 AccessibleText *text_interface;
309 long start_offset, end_offset;
310 char *first_sentence = "empty";
311 text_interface = Accessible_getText (obj);
312 first_sentence = AccessibleText_getTextAtOffset (
313 text_interface, (long) 0, SPI_TEXT_BOUNDARY_SENTENCE_START, &start_offset, &end_offset);
314 if (first_sentence && use_festival)
316 _festival_say(first_sentence, "voice_don_diphone", FALSE);
317 SPI_freeString (first_sentence);
319 len = AccessibleText_getCharacterCount (text_interface);
320 s = AccessibleText_getText (text_interface, 0, len);
321 fprintf (stderr, "done reporting on focussed object, text=%s\n", s);
326 report_focus_event (const AccessibleEvent *event, void *user_data)
330 g_return_if_fail (event->source != NULL);
331 s = Accessible_getName (event->source);
334 fprintf (stderr, "%s event from %s\n", event->type, s);
336 report_focussed_accessible (event->source, TRUE);
338 Accessible_getParent (event->source);
339 name_changed = FALSE;
343 report_generic_event (const AccessibleEvent *event, void *user_data)
345 fprintf (stderr, "%s event received\n", event->type);
349 report_window_event (const AccessibleEvent *event, void *user_data)
351 fprintf (stderr, "%s event received\n", event->type);
355 report_text_event (const AccessibleEvent *event, void *user_data)
357 AccessibleText *text = Accessible_getText (event->source);
358 fprintf (stderr, "%s event received\n", event->type);
359 #ifdef MAGNIFIER_ENABLED
360 if (use_magnifier && strcmp (event->type, "object:text-changed"))
362 long offset = AccessibleText_getCaretOffset (text);
364 fprintf (stderr, "offset %d\n", (int) offset);
365 AccessibleText_getCharacterExtents (text, offset, &x, &y, &w, &h,
366 SPI_COORD_TYPE_SCREEN);
367 fprintf (stderr, "new roi %d %d %d %d\n", (int) x, (int) y, (int) w, (int) h);
368 magnifier_set_roi ((short) 0, x, y, w, h);
371 if (!strcmp (event->type, "object:text-changed"))
374 char *new_text = AccessibleText_getTextAtOffset (text, (long) event->detail1, SPI_TEXT_BOUNDARY_WORD_START, &start, &end);
375 _festival_say (new_text, "voice_kal_diphone", FALSE);
376 fprintf (stderr, "text changed: %s", new_text ? new_text : "");
377 SPI_freeString (new_text);
382 char *word_text = AccessibleText_getTextAtOffset (text, (long) event->detail1, SPI_TEXT_BOUNDARY_WORD_START, &start, &end);
383 char *sentence_text = AccessibleText_getTextAtOffset (text, (long) event->detail1, SPI_TEXT_BOUNDARY_SENTENCE_START, &start, &end);
384 fprintf (stderr, "text changed: word %s; sentence %s at %d",
385 (word_text ? word_text : ""),
386 (sentence_text ? sentence_text : ""),
388 if (word_text) SPI_freeString (word_text);
389 if (sentence_text) SPI_freeString (sentence_text);
394 report_button_press (const AccessibleEvent *event, void *user_data)
398 g_return_if_fail (event->source != NULL);
400 s = Accessible_getName (event->source);
402 fprintf (stderr, "%s event from %s\n", event->type, s);
404 s = Accessible_getDescription (event->source);
405 fprintf (stderr, "Object description %s\n", s);
410 check_property_change (const AccessibleEvent *event, void *user_data)
412 AccessibleSelection *selection = Accessible_getSelection (event->source);
416 fprintf (stderr, "property change event!\n");
419 n_selections = (int) AccessibleSelection_getNSelectedChildren (selection);
420 s = Accessible_getName (event->source);
421 fprintf (stderr, "(Property) %s event from %s, %d selected children\n",
422 event->type, s, n_selections);
424 /* for now, speak entire selection set */
425 for (i=0; i<n_selections; ++i)
427 Accessible *obj = AccessibleSelection_getSelectedChild (selection, (long) i);
428 g_return_if_fail (obj);
429 s = Accessible_getName (obj);
430 fprintf (stderr, "Child %d, name=%s\n", i, s);
432 report_focussed_accessible (obj, i==0);
435 else if (!strcmp (event->type, "object:property-change:accessible-name"))
438 report_focussed_accessible (event->source, TRUE);
442 fprintf (stderr, "Property change %s received\n", event->type);
449 SPI_deregisterGlobalEventListenerAll (focus_listener);
450 AccessibleEventListener_unref (focus_listener);
452 SPI_deregisterGlobalEventListenerAll (property_listener);
453 AccessibleEventListener_unref (property_listener);
455 SPI_deregisterGlobalEventListenerAll (generic_listener);
456 AccessibleEventListener_unref (generic_listener);
458 SPI_deregisterGlobalEventListenerAll (text_listener);
459 AccessibleEventListener_unref (text_listener);
461 SPI_deregisterGlobalEventListenerAll (button_listener);
462 AccessibleEventListener_unref (button_listener);
464 SPI_deregisterAccessibleKeystrokeListener (command_key_listener, SPI_KEYMASK_ALT | SPI_KEYMASK_CONTROL);
465 AccessibleKeystrokeListener_unref (command_key_listener);
466 SPI_freeAccessibleKeySet (command_keyset);
468 SPI_deregisterAccessibleKeystrokeListener (ordinary_key_listener, SPI_KEYMASK_SHIFTLOCK);
469 AccessibleKeystrokeListener_unref (ordinary_key_listener);
475 is_command_key (const AccessibleKeystroke *key)
482 return TRUE; /* not reached */
483 #ifdef MAGNIFIER_ENABLED
486 use_magnifier = ! use_magnifier;
487 fprintf (stderr, "%ssing magnifier\n", use_magnifier ? "U" : "Not u");
492 use_festival = ! use_festival;
493 fprintf (stderr, "%speech output\n", use_festival ? "S" : "No s");
501 report_command_key_event (const AccessibleKeystroke *key, void *user_data)
503 fprintf (stderr, "Command KeyEvent %s%c (keycode %d); string=%s; time=%lx\n",
504 (key->modifiers & SPI_KEYMASK_ALT)?"Alt-":"",
505 ((key->modifiers & SPI_KEYMASK_SHIFT)^(key->modifiers & SPI_KEYMASK_SHIFTLOCK))?
506 (char) toupper((int) key->keyID) : (char) tolower((int) key->keyID),
509 (long int) key->timestamp);
510 return is_command_key (key);
515 report_ordinary_key_event (const AccessibleKeystroke *key, void *user_data)
517 fprintf (stderr, "Received key event:\tsym %ld\n\tmods %x\n\tcode %d\n\tstring=\'%s\'\n\ttime %lx\n",
519 (unsigned int) key->modifiers,
522 (long int) key->timestamp);
530 struct sockaddr_in name;
533 name.sin_family = AF_INET;
534 name.sin_port = htons (1314);
535 name.sin_addr.s_addr = htonl(INADDR_ANY);
536 fd = socket (PF_INET, SOCK_STREAM, 0);
538 while (connect(fd, (struct sockaddr *) &name, sizeof (name)) < 0) {
545 _festival_write ("(audio_mode'async)\n", fd);
546 _festival_write ("(Parameter.set 'Duration_Model 'Tree_ZScore)\n", fd);
547 _festival_write ("(Parameter.set 'Duration_Stretch 0.75)\n", fd);
552 _festival_say (const char *text, const char *voice, SPIBoolean shutup)
558 static gchar voice_spec[32];
562 fd = _festival_init ();
565 fprintf (stderr, "saying text: %s\n", text);
567 quoted = g_malloc(64+strlen(text)*2);
569 sprintf (prefix, "(SayText \"");
571 strncpy(quoted, prefix, 10);
572 p = quoted+strlen(prefix);
574 if ( *text == '\\' || *text == '"' )
583 if (shutup) _festival_write ("(audio_mode'shutup)\n", fd);
584 if (voice && (strncmp (voice, (char *) (voice_spec+1), strlen(voice))))
586 snprintf (voice_spec, 32, "(%s)\n", voice);
587 _festival_write (voice_spec, fd);
588 _festival_write ("(Parameter.set 'Duration_Model 'Tree_ZScore)\n", fd);
589 _festival_write ("(Parameter.set 'Duration_Stretch 0.75)\n", fd);
592 _festival_write (quoted, fd);
598 _festival_write (const gchar *command_string, int fd)
600 fprintf(stderr, command_string);
605 write(fd, command_string, strlen(command_string));