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.
26 #include <sys/socket.h>
27 #include <netinet/in.h>
29 #undef MAGNIFIER_ENABLED
30 #include "../cspi/spi-private.h" /* A hack for now */
34 static void report_focus_event (const AccessibleEvent *event, void *user_data);
35 static void report_generic_event (const AccessibleEvent *event, void *user_data);
36 static void report_window_event (const AccessibleEvent *event, void *user_data);
37 static void report_text_event (const AccessibleEvent *event, void *user_data);
38 static void report_button_press (const AccessibleEvent *event, void *user_data);
39 static void check_property_change (const AccessibleEvent *event, void *user_data);
40 static SPIBoolean report_command_key_event (const AccessibleKeystroke *stroke, void *user_data);
41 static SPIBoolean report_ordinary_key_event (const AccessibleKeystroke *stroke, void *user_data);
42 static void get_environment_vars (void);
44 static int _festival_init ();
45 static void _festival_say (const char *text, const char *voice, SPIBoolean shutup);
46 static void _festival_write (const char *buff, int fd);
49 static void print_accessible_tree (Accessible *accessible, char *prefix);
52 #ifdef MAGNIFIER_ENABLED
53 static SPIBoolean use_magnifier = FALSE;
56 static SPIBoolean use_festival = FALSE;
57 static SPIBoolean festival_chatty = FALSE;
58 static SPIBoolean name_changed = FALSE;
60 static AccessibleEventListener *focus_listener;
61 static AccessibleEventListener *property_listener;
62 static AccessibleEventListener *generic_listener;
63 static AccessibleEventListener *window_listener;
64 static AccessibleEventListener *button_listener;
65 static AccessibleEventListener *text_listener;
66 static AccessibleKeystrokeListener *command_key_listener;
67 static AccessibleKeystrokeListener *ordinary_key_listener;
68 static AccessibleKeySet *command_keyset;
71 main (int argc, char **argv)
78 Accessible *application;
81 if ((argc > 1) && (!strncmp (argv[1], "-h", 2)))
83 printf ("Usage: simple-at\n");
84 printf ("\tEnvironment variables used:\n\t\tFESTIVAL\n\t\tMAGNIFIER\n\t\tFESTIVAL_CHATTY\n");
88 modules = g_getenv ("GTK_MODULES");
89 if (!modules || modules [0] == '\0')
91 putenv ("GTK_MODULES=");
97 focus_listener = SPI_createAccessibleEventListener (report_focus_event, NULL);
98 property_listener = SPI_createAccessibleEventListener (check_property_change, NULL);
99 generic_listener = SPI_createAccessibleEventListener (report_generic_event, NULL);
100 window_listener = SPI_createAccessibleEventListener (report_window_event, NULL);
101 text_listener = SPI_createAccessibleEventListener (report_text_event, NULL);
102 button_listener = SPI_createAccessibleEventListener (report_button_press, NULL);
103 SPI_registerGlobalEventListener (focus_listener, "focus:");
104 SPI_registerGlobalEventListener (property_listener, "object:property-change");
105 /* :accessible-selection"); */
106 SPI_registerGlobalEventListener (property_listener, "object:property-change:accessible-name");
107 SPI_registerGlobalEventListener (generic_listener, "object:selection-changed");
108 SPI_registerGlobalEventListener (generic_listener, "object:children-changed");
109 SPI_registerGlobalEventListener (generic_listener, "object:visible-data-changed");
110 SPI_registerGlobalEventListener (generic_listener, "object:text-selection-changed");
111 SPI_registerGlobalEventListener (text_listener, "object:text-caret-moved");
112 SPI_registerGlobalEventListener (text_listener, "object:text-changed");
113 SPI_registerGlobalEventListener (button_listener, "Gtk:GtkWidget:button-press-event");
114 SPI_registerGlobalEventListener (window_listener, "window:minimize");
115 n_desktops = SPI_getDesktopCount ();
117 for (i=0; i<n_desktops; ++i)
119 desktop = SPI_getDesktop (i);
120 s = Accessible_getName (desktop);
121 fprintf (stderr, "desktop %d name: %s\n", i, s);
123 n_apps = Accessible_getChildCount (desktop);
124 for (j=0; j<n_apps; ++j)
126 application = Accessible_getChildAtIndex (desktop, j);
127 s = Accessible_getName (application);
128 fprintf (stderr, "app %d name: %s\n", j, s);
130 print_accessible_tree (application, "*");
133 Accessible_unref (application);
135 Accessible_unref (desktop);
138 /* prepare the keyboard snoopers */
139 command_key_listener = SPI_createAccessibleKeystrokeListener (report_command_key_event, NULL);
140 ordinary_key_listener = SPI_createAccessibleKeystrokeListener (report_ordinary_key_event, NULL);
142 command_keyset = SPI_createAccessibleKeySet (11, "qmf23456789", NULL, NULL);
144 /* will listen only to Control-Alt-q KeyPress events */
145 SPI_registerAccessibleKeystrokeListener(command_key_listener,
147 SPI_KEYMASK_ALT | SPI_KEYMASK_CONTROL,
148 (unsigned long) ( SPI_KEY_PRESSED ),
149 SPI_KEYLISTENER_ALL_WINDOWS);
151 /* will listen only to CAPSLOCK key events, both press and release */
152 SPI_registerAccessibleKeystrokeListener(ordinary_key_listener,
153 (AccessibleKeySet *) SPI_KEYSET_ALL_KEYS,
154 SPI_KEYMASK_SHIFTLOCK,
155 (unsigned long) ( SPI_KEY_PRESSED | SPI_KEY_RELEASED ),
156 SPI_KEYLISTENER_NOSYNC);
158 get_environment_vars ();
162 putenv ("AT_BRIDGE_SHUTDOWN=1");
168 get_environment_vars (void)
170 if (g_getenv ("FESTIVAL"))
172 fprintf (stderr, "Using festival\n");
174 if (g_getenv ("FESTIVAL_CHATTY"))
176 festival_chatty = TRUE;
179 #ifdef MAGNIFIER_ENABLED
180 if (g_getenv ("MAGNIFIER"))
182 fprintf (stderr, "Using magnifier\n");
183 use_magnifier = TRUE;
187 fprintf (stderr, "Not using magnifier\n");
193 fprintf (stderr, "No speech output\n");
199 print_accessible_tree (Accessible *accessible, char *prefix)
205 char *parent_name = NULL;
206 char *parent_role = NULL;
207 char child_prefix[100];
211 strncpy (child_prefix, prefix, 98);
212 strcat (child_prefix, "*");
213 parent = Accessible_getParent (accessible);
216 parent_name = Accessible_getName (parent);
217 parent_role = Accessible_getRoleName (parent);
218 Accessible_unref (parent);
220 name = Accessible_getName (accessible);
221 role_name = Accessible_getRoleName (accessible);
222 fprintf (stdout, "%sAccessible [%s] \"%s\"; parent [%s] %s.\n",
223 prefix, role_name, name, parent_role, parent_name);
224 SPI_freeString (name);
225 SPI_freeString (role_name);
226 SPI_freeString (parent_name);
227 SPI_freeString (parent_role);
228 n_children = Accessible_getChildCount (accessible);
229 for (i = 0; i < n_children; ++i)
231 child = Accessible_getChildAtIndex (accessible, i);
232 print_accessible_tree (child, child_prefix);
233 Accessible_unref (child);
239 report_focussed_accessible (Accessible *obj, SPIBoolean shutup_previous_speech)
243 long x, y, width, height;
244 /* hack for GUADEC demo, to make sure name changes are spoken */
245 shutup_previous_speech = (shutup_previous_speech && !name_changed);
251 s = Accessible_getRoleName (obj);
252 _festival_say (s, "voice_don_diphone", shutup_previous_speech);
255 fprintf (stderr, "getting Name\n");
256 s = Accessible_getName (obj);
257 _festival_say (s, "voice_kal_diphone",
258 shutup_previous_speech || festival_chatty);
262 if (Accessible_isComponent (obj))
264 AccessibleComponent *component = Accessible_getComponent (obj);
265 AccessibleComponent_getExtents (component, &x, &y, &width, &height,
266 SPI_COORD_TYPE_SCREEN);
267 fprintf (stderr, "Bounding box: (%ld, %ld) ; (%ld, %ld)\n",
268 x, y, x+width, y+height);
269 if (Accessible_isText (obj))
271 long x0, y0, xN, yN, w0, h0, wN, hN, nchars;
272 AccessibleText *text = Accessible_getText (obj);
273 nchars = AccessibleText_getCharacterCount (text);
276 AccessibleText_getCharacterExtents (text, 0, &x0, &y0, &w0, &h0,
277 SPI_COORD_TYPE_SCREEN);
278 AccessibleText_getCharacterExtents (text, nchars-1, &xN, &yN, &wN, &hN,
279 SPI_COORD_TYPE_SCREEN);
281 width = MAX (x0 + w0, xN + wN) - x;
282 fprintf (stderr, "Text bounding box: (%ld, %ld) ; (%ld, %ld)\n",
283 x, y, x+width, y+height);
286 #ifdef MAGNIFIER_ENABLED
288 magnifier_set_roi ((short) 0, x, y, width, height);
294 if (Accessible_isValue (obj))
296 AccessibleValue *value = Accessible_getValue (obj);
297 fprintf (stderr, "Current value = %f, min = %f; max = %f\n",
298 AccessibleValue_getCurrentValue (value),
299 AccessibleValue_getMinimumValue (value),
300 AccessibleValue_getMaximumValue (value));
302 /* if this is a text object, speak the first sentence. */
304 if (Accessible_isText(obj))
307 AccessibleText *text_interface;
308 long start_offset, end_offset;
309 char *first_sentence = "empty";
310 text_interface = Accessible_getText (obj);
311 first_sentence = AccessibleText_getTextAtOffset (
312 text_interface, (long) 0, SPI_TEXT_BOUNDARY_SENTENCE_START, &start_offset, &end_offset);
313 if (first_sentence && use_festival)
315 _festival_say(first_sentence, "voice_don_diphone", FALSE);
316 SPI_freeString (first_sentence);
318 len = AccessibleText_getCharacterCount (text_interface);
319 s = AccessibleText_getText (text_interface, 0, len);
320 fprintf (stderr, "done reporting on focussed object, text=%s\n", s);
325 report_focus_event (const AccessibleEvent *event, void *user_data)
329 g_return_if_fail (event->source != NULL);
330 s = Accessible_getName (event->source);
333 fprintf (stderr, "%s event from %s\n", event->type, s);
335 report_focussed_accessible (event->source, TRUE);
337 Accessible_getParent (event->source);
338 name_changed = FALSE;
342 report_generic_event (const AccessibleEvent *event, void *user_data)
344 fprintf (stderr, "%s event received\n", event->type);
348 report_window_event (const AccessibleEvent *event, void *user_data)
350 fprintf (stderr, "%s event received\n", event->type);
354 report_text_event (const AccessibleEvent *event, void *user_data)
356 AccessibleText *text = Accessible_getText (event->source);
357 fprintf (stderr, "%s event received\n", event->type);
358 #ifdef MAGNIFIER_ENABLED
359 if (use_magnifier && strcmp (event->type, "object:text-changed"))
361 long offset = AccessibleText_getCaretOffset (text);
363 fprintf (stderr, "offset %d\n", (int) offset);
364 AccessibleText_getCharacterExtents (text, offset, &x, &y, &w, &h,
365 SPI_COORD_TYPE_SCREEN);
366 fprintf (stderr, "new roi %d %d %d %d\n", (int) x, (int) y, (int) w, (int) h);
367 magnifier_set_roi ((short) 0, x, y, w, h);
370 if (!strcmp (event->type, "object:text-changed"))
373 char *new_text = AccessibleText_getTextAtOffset (text, (long) event->detail1, SPI_TEXT_BOUNDARY_WORD_START, &start, &end);
374 _festival_say (new_text, "voice_kal_diphone", FALSE);
375 fprintf (stderr, "text changed: %s", new_text ? new_text : "");
376 SPI_freeString (new_text);
381 char *word_text = AccessibleText_getTextAtOffset (text, (long) event->detail1, SPI_TEXT_BOUNDARY_WORD_START, &start, &end);
382 char *sentence_text = AccessibleText_getTextAtOffset (text, (long) event->detail1, SPI_TEXT_BOUNDARY_SENTENCE_START, &start, &end);
383 fprintf (stderr, "text changed: word %s; sentence %s at %d",
384 (word_text ? word_text : ""),
385 (sentence_text ? sentence_text : ""),
387 if (word_text) SPI_freeString (word_text);
388 if (sentence_text) SPI_freeString (sentence_text);
393 report_button_press (const AccessibleEvent *event, void *user_data)
397 g_return_if_fail (event->source != NULL);
399 s = Accessible_getName (event->source);
401 fprintf (stderr, "%s event from %s\n", event->type, s);
403 s = Accessible_getDescription (event->source);
404 fprintf (stderr, "Object description %s\n", s);
409 check_property_change (const AccessibleEvent *event, void *user_data)
411 AccessibleSelection *selection = Accessible_getSelection (event->source);
415 fprintf (stderr, "property change event!\n");
418 n_selections = (int) AccessibleSelection_getNSelectedChildren (selection);
419 s = Accessible_getName (event->source);
420 fprintf (stderr, "(Property) %s event from %s, %d selected children\n",
421 event->type, s, n_selections);
423 /* for now, speak entire selection set */
424 for (i=0; i<n_selections; ++i)
426 Accessible *obj = AccessibleSelection_getSelectedChild (selection, (long) i);
427 g_return_if_fail (obj);
428 s = Accessible_getName (obj);
429 fprintf (stderr, "Child %d, name=%s\n", i, s);
431 report_focussed_accessible (obj, i==0);
434 else if (!strcmp (event->type, "object:property-change:accessible-name"))
437 report_focussed_accessible (event->source, TRUE);
441 fprintf (stderr, "Property change %s received\n", event->type);
448 SPI_deregisterGlobalEventListenerAll (focus_listener);
449 AccessibleEventListener_unref (focus_listener);
451 SPI_deregisterGlobalEventListenerAll (property_listener);
452 AccessibleEventListener_unref (property_listener);
454 SPI_deregisterGlobalEventListenerAll (generic_listener);
455 AccessibleEventListener_unref (generic_listener);
457 SPI_deregisterGlobalEventListenerAll (text_listener);
458 AccessibleEventListener_unref (text_listener);
460 SPI_deregisterGlobalEventListenerAll (button_listener);
461 AccessibleEventListener_unref (button_listener);
463 SPI_deregisterAccessibleKeystrokeListener (command_key_listener, SPI_KEYMASK_ALT | SPI_KEYMASK_CONTROL);
464 AccessibleKeystrokeListener_unref (command_key_listener);
465 SPI_freeAccessibleKeySet (command_keyset);
467 SPI_deregisterAccessibleKeystrokeListener (ordinary_key_listener, SPI_KEYMASK_SHIFTLOCK);
468 AccessibleKeystrokeListener_unref (ordinary_key_listener);
474 is_command_key (const AccessibleKeystroke *key)
481 return TRUE; /* not reached */
482 #ifdef MAGNIFIER_ENABLED
485 use_magnifier = ! use_magnifier;
486 fprintf (stderr, "%ssing magnifier\n", use_magnifier ? "U" : "Not u");
491 use_festival = ! use_festival;
492 fprintf (stderr, "%speech output\n", use_festival ? "S" : "No s");
500 report_command_key_event (const AccessibleKeystroke *key, void *user_data)
502 fprintf (stderr, "Command KeyEvent %s%c (keycode %d); string=%s; time=%lx\n",
503 (key->modifiers & SPI_KEYMASK_ALT)?"Alt-":"",
504 ((key->modifiers & SPI_KEYMASK_SHIFT)^(key->modifiers & SPI_KEYMASK_SHIFTLOCK))?
505 (char) toupper((int) key->keyID) : (char) tolower((int) key->keyID),
508 (long int) key->timestamp);
509 return is_command_key (key);
514 report_ordinary_key_event (const AccessibleKeystroke *key, void *user_data)
516 fprintf (stderr, "Received key event:\tsym %ld\n\tmods %x\n\tcode %d\n\tstring=\'%s\'\n\ttime %lx\n",
518 (unsigned int) key->modifiers,
521 (long int) key->timestamp);
529 struct sockaddr_in name;
532 name.sin_family = AF_INET;
533 name.sin_port = htons (1314);
534 name.sin_addr.s_addr = htonl(INADDR_ANY);
535 fd = socket (PF_INET, SOCK_STREAM, 0);
537 while (connect(fd, (struct sockaddr *) &name, sizeof (name)) < 0) {
544 _festival_write ("(audio_mode'async)\n", fd);
545 _festival_write ("(Parameter.set 'Duration_Model 'Tree_ZScore)\n", fd);
546 _festival_write ("(Parameter.set 'Duration_Stretch 0.75)\n", fd);
551 _festival_say (const char *text, const char *voice, SPIBoolean shutup)
557 static gchar voice_spec[32];
561 fd = _festival_init ();
564 fprintf (stderr, "saying text: %s\n", text);
566 quoted = g_malloc(64+strlen(text)*2);
568 sprintf (prefix, "(SayText \"");
570 strncpy(quoted, prefix, 10);
571 p = quoted+strlen(prefix);
573 if ( *text == '\\' || *text == '"' )
582 if (shutup) _festival_write ("(audio_mode'shutup)\n", fd);
583 if (voice && (strncmp (voice, (char *) (voice_spec+1), strlen(voice))))
585 snprintf (voice_spec, 32, "(%s)\n", voice);
586 _festival_write (voice_spec, fd);
587 _festival_write ("(Parameter.set 'Duration_Model 'Tree_ZScore)\n", fd);
588 _festival_write ("(Parameter.set 'Duration_Stretch 0.75)\n", fd);
591 _festival_write (quoted, fd);
597 _festival_write (const gchar *command_string, int fd)
599 fprintf(stderr, command_string);
604 write(fd, command_string, strlen(command_string));