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>
28 #include "../util/mag_client.h"
29 #include "../cspi/spi-private.h" /* A hack for now */
31 static void report_focus_event (const AccessibleEvent *event, void *user_data);
32 static void report_generic_event (const AccessibleEvent *event, void *user_data);
33 static void report_text_event (const AccessibleEvent *event, void *user_data);
34 static void report_button_press (const AccessibleEvent *event, void *user_data);
35 static void check_property_change (const AccessibleEvent *event, void *user_data);
36 static SPIBoolean report_command_key_event (const AccessibleKeystroke *stroke, void *user_data);
37 static SPIBoolean report_ordinary_key_event (const AccessibleKeystroke *stroke, void *user_data);
38 static void get_environment_vars (void);
40 static int _festival_init ();
41 static void _festival_say (const char *text, const char *voice, SPIBoolean shutup);
42 static void _festival_write (const char *buff, int fd);
44 static SPIBoolean use_magnifier = FALSE;
45 static SPIBoolean use_festival = FALSE;
46 static SPIBoolean festival_chatty = FALSE;
48 static AccessibleEventListener *focus_listener;
49 static AccessibleEventListener *property_listener;
50 static AccessibleEventListener *generic_listener;
51 static AccessibleEventListener *button_listener;
52 static AccessibleEventListener *text_listener;
53 static AccessibleKeystrokeListener *command_key_listener;
54 static AccessibleKeystrokeListener *ordinary_key_listener;
55 static AccessibleKeySet *command_keyset;
58 main (int argc, char **argv)
65 Accessible *application;
68 if ((argc > 1) && (!strncmp (argv[1], "-h", 2)))
70 printf ("Usage: simple-at\n");
71 printf ("\tEnvironment variables used:\n\t\tFESTIVAL\n\t\tMAGNIFIER\n\t\tFESTIVAL_CHATTY\n");
75 modules = g_getenv ("GTK_MODULES");
76 if (!modules || modules [0] == '\0')
78 putenv ("GTK_MODULES=gail:atk-bridge");
84 focus_listener = SPI_createAccessibleEventListener (report_focus_event, NULL);
85 property_listener = SPI_createAccessibleEventListener (check_property_change, NULL);
86 generic_listener = SPI_createAccessibleEventListener (report_generic_event, NULL);
87 text_listener = SPI_createAccessibleEventListener (report_text_event, NULL);
88 button_listener = SPI_createAccessibleEventListener (report_button_press, NULL);
89 SPI_registerGlobalEventListener (focus_listener, "focus:");
90 SPI_registerGlobalEventListener (property_listener, "object:property-change:accessible-selection");
91 SPI_registerGlobalEventListener (generic_listener, "object:selection-changed");
92 SPI_registerGlobalEventListener (generic_listener, "object:children-changed");
93 SPI_registerGlobalEventListener (generic_listener, "object:visible-data-changed");
94 SPI_registerGlobalEventListener (generic_listener, "object:text-selection-changed");
95 SPI_registerGlobalEventListener (text_listener, "object:text-caret-moved");
96 SPI_registerGlobalEventListener (generic_listener, "object:text-changed");
97 SPI_registerGlobalEventListener (button_listener, "Gtk:GtkWidget:button-press-event");
98 n_desktops = SPI_getDesktopCount ();
100 for (i=0; i<n_desktops; ++i)
102 desktop = SPI_getDesktop (i);
103 s = Accessible_getName (desktop);
104 fprintf (stderr, "desktop %d name: %s\n", i, s);
106 n_apps = Accessible_getChildCount (desktop);
107 for (j=0; j<n_apps; ++j)
109 application = Accessible_getChildAtIndex (desktop, j);
110 s = Accessible_getName (application);
111 fprintf (stderr, "app %d name: %s\n", j, s);
113 Accessible_unref (application);
115 Accessible_unref (desktop);
118 /* prepare the keyboard snoopers */
119 command_key_listener = SPI_createAccessibleKeystrokeListener (report_command_key_event, NULL);
120 ordinary_key_listener = SPI_createAccessibleKeystrokeListener (report_ordinary_key_event, NULL);
122 command_keyset = SPI_createAccessibleKeySet (11, "qmf23456789", NULL, NULL);
124 /* will listen only to Control-Alt-q KeyPress events */
125 SPI_registerAccessibleKeystrokeListener(command_key_listener,
127 SPI_KEYMASK_ALT | SPI_KEYMASK_CONTROL,
128 (unsigned long) ( SPI_KEY_PRESSED ),
129 SPI_KEYLISTENER_ALL_WINDOWS);
131 /* will listen only to CAPSLOCK key events, both press and release */
132 SPI_registerAccessibleKeystrokeListener(ordinary_key_listener,
133 (AccessibleKeySet *) SPI_KEYSET_ALL_KEYS,
134 SPI_KEYMASK_SHIFTLOCK,
135 (unsigned long) ( SPI_KEY_PRESSED | SPI_KEY_RELEASED ),
136 SPI_KEYLISTENER_NOSYNC);
138 get_environment_vars ();
142 putenv ("AT_BRIDGE_SHUTDOWN=1");
148 get_environment_vars (void)
150 if (g_getenv ("FESTIVAL"))
152 fprintf (stderr, "Using festival\n");
154 if (g_getenv ("FESTIVAL_CHATTY"))
156 festival_chatty = TRUE;
159 if (g_getenv ("MAGNIFIER"))
161 fprintf (stderr, "Using magnifier\n");
162 use_magnifier = TRUE;
166 fprintf (stderr, "Not using magnifier\n");
171 fprintf (stderr, "No speech output\n");
176 report_focussed_accessible (Accessible *obj, SPIBoolean shutup_previous_speech)
180 long x, y, width, height;
186 s = Accessible_getRoleName (obj);
187 _festival_say (s, "voice_don_diphone", shutup_previous_speech);
190 fprintf (stderr, "getting Name\n");
191 s = Accessible_getName (obj);
192 _festival_say (s, "voice_kal_diphone",
193 shutup_previous_speech || festival_chatty);
197 if (Accessible_isComponent (obj))
199 AccessibleComponent *component = Accessible_getComponent (obj);
200 AccessibleComponent_getExtents (component, &x, &y, &width, &height,
201 SPI_COORD_TYPE_SCREEN);
202 fprintf (stderr, "Bounding box: (%ld, %ld) ; (%ld, %ld)\n",
203 x, y, x+width, y+height);
204 if (Accessible_isText (obj))
206 long x0, y0, xN, yN, w0, h0, wN, hN, nchars;
207 AccessibleText *text = Accessible_getText (obj);
208 nchars = AccessibleText_getCharacterCount (text);
211 AccessibleText_getCharacterExtents (text, 0, &x0, &y0, &w0, &h0,
212 SPI_COORD_TYPE_SCREEN);
213 AccessibleText_getCharacterExtents (text, nchars-1, &xN, &yN, &wN, &hN,
214 SPI_COORD_TYPE_SCREEN);
216 width = MAX (x0 + w0, xN + wN) - x;
217 fprintf (stderr, "Text bounding box: (%ld, %ld) ; (%ld, %ld)\n",
218 x, y, x+width, y+height);
222 magnifier_set_roi ((short) 0, x, y, width, height);
226 if (Accessible_isValue (obj))
228 AccessibleValue *value = Accessible_getValue (obj);
229 fprintf (stderr, "Current value = %f, min = %f; max = %f\n",
230 AccessibleValue_getCurrentValue (value),
231 AccessibleValue_getMinimumValue (value),
232 AccessibleValue_getMaximumValue (value));
234 /* if this is a text object, speak the first sentence. */
236 if (Accessible_isText(obj))
239 AccessibleText *text_interface;
240 long start_offset, end_offset;
241 char *first_sentence = "empty";
242 text_interface = Accessible_getText (obj);
243 first_sentence = AccessibleText_getTextAtOffset (
244 text_interface, (long) 0, SPI_TEXT_BOUNDARY_SENTENCE_START, &start_offset, &end_offset);
245 if (first_sentence && use_festival)
247 _festival_say(first_sentence, "voice_don_diphone", FALSE);
248 SPI_freeString (first_sentence);
250 len = AccessibleText_getCharacterCount (text_interface);
251 s = AccessibleText_getText (text_interface, 0, len);
252 fprintf (stderr, "done reporting on focussed object, text=%s\n", s);
257 report_focus_event (const AccessibleEvent *event, void *user_data)
261 g_return_if_fail (event->source != NULL);
263 s = Accessible_getName (event->source);
266 fprintf (stderr, "%s event from %s\n", event->type, s);
268 report_focussed_accessible (event->source, TRUE);
270 Accessible_getParent (event->source);
274 report_generic_event (const AccessibleEvent *event, void *user_data)
276 fprintf (stderr, "%s event received\n", event->type);
280 report_text_event (const AccessibleEvent *event, void *user_data)
282 fprintf (stderr, "%s event received\n", event->type);
285 AccessibleText *text = Accessible_getText (event->source);
286 long offset = AccessibleText_getCaretOffset (text);
288 fprintf (stderr, "offset %d\n", (int) offset);
289 AccessibleText_getCharacterExtents (text, offset, &x, &y, &w, &h,
290 SPI_COORD_TYPE_SCREEN);
291 fprintf (stderr, "new roi %d %d %d %d\n", (int) x, (int) y, (int) w, (int) h);
292 magnifier_set_roi ((short) 0, x, y, w, h);
297 report_button_press (const AccessibleEvent *event, void *user_data)
301 g_return_if_fail (event->source != NULL);
303 s = Accessible_getName (event->source);
305 fprintf (stderr, "%s event from %s\n", event->type, s);
307 s = Accessible_getDescription (event->source);
308 fprintf (stderr, "Object description %s\n", s);
313 check_property_change (const AccessibleEvent *event, void *user_data)
315 AccessibleSelection *selection = Accessible_getSelection (event->source);
321 n_selections = (int) AccessibleSelection_getNSelectedChildren (selection);
322 s = Accessible_getName (event->source);
323 fprintf (stderr, "(Property) %s event from %s, %d selected children\n",
324 event->type, s, n_selections);
326 /* for now, speak entire selection set */
327 for (i=0; i<n_selections; ++i)
329 Accessible *obj = AccessibleSelection_getSelectedChild (selection, (long) i);
330 g_return_if_fail (obj);
331 s = Accessible_getName (obj);
332 fprintf (stderr, "Child %d, name=%s\n", i, s);
334 report_focussed_accessible (obj, i==0);
342 SPI_deregisterGlobalEventListenerAll (focus_listener);
343 AccessibleEventListener_unref (focus_listener);
345 SPI_deregisterGlobalEventListenerAll (property_listener);
346 AccessibleEventListener_unref (property_listener);
348 SPI_deregisterGlobalEventListenerAll (generic_listener);
349 AccessibleEventListener_unref (generic_listener);
351 SPI_deregisterGlobalEventListenerAll (text_listener);
352 AccessibleEventListener_unref (text_listener);
354 SPI_deregisterGlobalEventListenerAll (button_listener);
355 AccessibleEventListener_unref (button_listener);
357 SPI_deregisterAccessibleKeystrokeListener (command_key_listener, SPI_KEYMASK_ALT | SPI_KEYMASK_CONTROL);
358 AccessibleKeystrokeListener_unref (command_key_listener);
359 SPI_freeAccessibleKeySet (command_keyset);
361 SPI_deregisterAccessibleKeystrokeListener (ordinary_key_listener, SPI_KEYMASK_SHIFTLOCK);
362 AccessibleKeystrokeListener_unref (ordinary_key_listener);
368 is_command_key (const AccessibleKeystroke *key)
375 return TRUE; /* not reached */
378 use_magnifier = ! use_magnifier;
379 fprintf (stderr, "%ssing magnifier\n", use_magnifier ? "U" : "Not u");
383 use_festival = ! use_festival;
384 fprintf (stderr, "%speech output\n", use_festival ? "S" : "No s");
392 report_command_key_event (const AccessibleKeystroke *key, void *user_data)
394 fprintf (stderr, "Command KeyEvent %s%c (keycode %d); string=%s; time=%lx\n",
395 (key->modifiers & SPI_KEYMASK_ALT)?"Alt-":"",
396 ((key->modifiers & SPI_KEYMASK_SHIFT)^(key->modifiers & SPI_KEYMASK_SHIFTLOCK))?
397 (char) toupper((int) key->keyID) : (char) tolower((int) key->keyID),
400 (long int) key->timestamp);
401 return is_command_key (key);
406 report_ordinary_key_event (const AccessibleKeystroke *key, void *user_data)
408 fprintf (stderr, "Received key event:\tsym %ld\n\tmods %x\n\tcode %d\n\tstring=\'%s\'\n\ttime %lx\n",
410 (unsigned int) key->modifiers,
413 (long int) key->timestamp);
421 struct sockaddr_in name;
424 name.sin_family = AF_INET;
425 name.sin_port = htons (1314);
426 name.sin_addr.s_addr = htonl(INADDR_ANY);
427 fd = socket (PF_INET, SOCK_STREAM, 0);
429 while (connect(fd, (struct sockaddr *) &name, sizeof (name)) < 0) {
436 _festival_write ("(audio_mode'async)\n", fd);
437 _festival_write ("(Parameter.set 'Duration_Model 'Tree_ZScore)\n", fd);
438 _festival_write ("(Parameter.set 'Duration_Stretch 0.75)\n", fd);
443 _festival_say (const char *text, const char *voice, SPIBoolean shutup)
449 static gchar voice_spec[32];
453 fd = _festival_init ();
456 fprintf (stderr, "saying text: %s\n", text);
458 quoted = g_malloc(64+strlen(text)*2);
460 sprintf (prefix, "(SayText \"");
462 strncpy(quoted, prefix, 10);
463 p = quoted+strlen(prefix);
465 if ( *text == '\\' || *text == '"' )
474 if (shutup) _festival_write ("(audio_mode'shutup)\n", fd);
475 if (voice && (strncmp (voice, (char *) (voice_spec+1), strlen(voice))))
477 snprintf (voice_spec, 32, "(%s)\n", voice);
478 _festival_write (voice_spec, fd);
479 _festival_write ("(Parameter.set 'Duration_Model 'Tree_ZScore)\n", fd);
480 _festival_write ("(Parameter.set 'Duration_Stretch 0.75)\n", fd);
483 _festival_write (quoted, fd);
489 _festival_write (const gchar *command_string, int fd)
491 fprintf(stderr, command_string);
496 write(fd, command_string, strlen(command_string));