5 #include "chimara-glk-private.h"
7 extern GPrivate *glk_data_key;
9 /* Forward declarations */
10 static int finish_text_buffer_line_input(winid_t win, gboolean emit_signal);
11 static int finish_text_grid_line_input(winid_t win, gboolean emit_signal);
12 static void cancel_old_input_request(winid_t win);
14 /* Internal function: code common to both flavors of char event request */
16 request_char_event_common(winid_t win, gboolean unicode)
18 VALID_WINDOW(win, return);
19 g_return_if_fail(win->type != wintype_TextBuffer || win->type != wintype_TextGrid);
21 cancel_old_input_request(win);
23 flush_window_buffer(win);
25 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
27 win->input_request_type = unicode? INPUT_REQUEST_CHARACTER_UNICODE : INPUT_REQUEST_CHARACTER;
28 g_signal_handler_unblock( win->widget, win->char_input_keypress_handler );
31 gtk_widget_grab_focus( GTK_WIDGET(win->widget) );
34 /* Emit the "waiting" signal to let listeners know we are ready for input */
35 g_signal_emit_by_name(glk_data->self, "waiting");
39 * glk_request_char_event:
40 * @win: A window to request char events from.
42 * Request input of a Latin-1 character or special key. A window cannot have
43 * requests for both character and line input at the same time. Nor can it have
44 * requests for character input of both types (Latin-1 and Unicode). It is
45 * illegal to call glk_request_char_event() if the window already has a pending
46 * request for either character or line input.
49 glk_request_char_event(winid_t win)
51 request_char_event_common(win, FALSE);
55 * glk_request_char_event_uni:
56 * @win: A window to request char events from.
58 * Request input of a Unicode character or special key. See
59 * glk_request_char_event().
62 glk_request_char_event_uni(winid_t win)
64 request_char_event_common(win, TRUE);
68 * glk_cancel_char_event:
69 * @win: A window to cancel the latest char event request on.
71 * This cancels a pending request for character input. (Either Latin-1 or
72 * Unicode.) For convenience, it is legal to call glk_cancel_char_event() even
73 * if there is no charcter input request on that window. Glk will ignore the
77 glk_cancel_char_event(winid_t win)
79 VALID_WINDOW(win, return);
80 g_return_if_fail(win->type != wintype_TextBuffer || win->type != wintype_TextGrid);
82 if(win->input_request_type == INPUT_REQUEST_CHARACTER || win->input_request_type == INPUT_REQUEST_CHARACTER_UNICODE)
84 win->input_request_type = INPUT_REQUEST_NONE;
85 g_signal_handler_block( win->widget, win->char_input_keypress_handler );
89 /* Internal function: Request either latin-1 or unicode line input, in a text grid window. */
91 text_grid_request_line_event_common(winid_t win, glui32 maxlen, gboolean insert, gchar *inserttext)
95 GtkTextBuffer *buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(win->widget) );
97 GtkTextMark *cursor = gtk_text_buffer_get_mark(buffer, "cursor_position");
98 GtkTextIter start_iter, end_iter;
99 gtk_text_buffer_get_iter_at_mark(buffer, &start_iter, cursor);
101 /* Determine the maximum length of the line input */
102 gint cursorpos = gtk_text_iter_get_line_offset(&start_iter);
103 /* Odd; the Glk spec says the maximum input length is
104 windowwidth - 1 - cursorposition. I say no, because if cursorposition is
105 zero, then the input should fill the whole line. FIXME??? */
106 win->input_length = MIN(win->width - cursorpos, win->line_input_buffer_max_len);
107 end_iter = start_iter;
108 gtk_text_iter_set_line_offset(&end_iter, cursorpos + win->input_length);
110 /* If the buffer currently has a selection with one bound in the middle of
111 the input field, then deselect it. Otherwise the input field gets trashed */
112 GtkTextIter start_sel, end_sel;
113 if( gtk_text_buffer_get_selection_bounds(buffer, &start_sel, &end_sel) )
115 if( gtk_text_iter_in_range(&start_sel, &start_iter, &end_iter) )
116 gtk_text_buffer_place_cursor(buffer, &end_sel);
117 if( gtk_text_iter_in_range(&end_sel, &start_iter, &end_iter) )
118 gtk_text_buffer_place_cursor(buffer, &start_sel);
121 /* Erase the text currently in the input field and replace it with a GtkEntry */
122 gtk_text_buffer_delete(buffer, &start_iter, &end_iter);
123 win->input_anchor = gtk_text_buffer_create_child_anchor(buffer, &start_iter);
124 win->input_entry = gtk_entry_new();
125 /* Set the entry's font to match that of the window */
126 GtkRcStyle *style = gtk_widget_get_modifier_style(win->widget); /* Don't free */
127 gtk_widget_modify_font(win->input_entry, style->font_desc);
128 /* Make the entry as small as possible to fit with the text */
129 gtk_entry_set_has_frame(GTK_ENTRY(win->input_entry), FALSE);
130 GtkBorder border = { 0, 0, 0, 0 };
133 #if GTK_CHECK_VERSION(2,10,0)
134 gtk_entry_set_inner_border(GTK_ENTRY(win->input_entry), &border);
136 gtk_entry_set_max_length(GTK_ENTRY(win->input_entry), win->input_length);
137 gtk_entry_set_width_chars(GTK_ENTRY(win->input_entry), win->input_length);
139 /* Insert pre-entered text if needed */
141 gtk_entry_set_text(GTK_ENTRY(win->input_entry), inserttext);
143 /* Set background color of entry (TODO: implement as property) */
145 gdk_color_parse("grey", &background);
146 gtk_widget_modify_base(win->input_entry, GTK_STATE_NORMAL, &background);
148 g_signal_connect(win->input_entry, "activate", G_CALLBACK(on_input_entry_activate), win);
149 g_signal_connect(win->input_entry, "key-press-event", G_CALLBACK(on_input_entry_key_press_event), win);
150 win->line_input_entry_changed = g_signal_connect(win->input_entry, "changed", G_CALLBACK(on_input_entry_changed), win);
152 gtk_widget_show(win->input_entry);
153 gtk_text_view_add_child_at_anchor(GTK_TEXT_VIEW(win->widget), win->input_entry, win->input_anchor);
155 gtk_widget_grab_focus(win->input_entry);
160 /* Internal function: Request either latin-1 or unicode line input, in a text buffer window. */
162 text_buffer_request_line_event_common(winid_t win, glui32 maxlen, gboolean insert, gchar *inserttext)
164 flush_window_buffer(win);
168 GtkTextBuffer *buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(win->widget) );
170 /* Move the input_position mark to the end of the window_buffer */
171 GtkTextMark *input_position = gtk_text_buffer_get_mark(buffer, "input_position");
172 GtkTextIter end_iter;
173 gtk_text_buffer_get_end_iter(buffer, &end_iter);
174 gtk_text_buffer_move_mark(buffer, input_position, &end_iter);
176 /* Set the entire contents of the window_buffer as uneditable
177 * (so input can only be entered at the end) */
178 GtkTextIter start_iter;
179 gtk_text_buffer_get_start_iter(buffer, &start_iter);
180 gtk_text_buffer_remove_tag_by_name(buffer, "uneditable", &start_iter, &end_iter);
181 gtk_text_buffer_apply_tag_by_name(buffer, "uneditable", &start_iter, &end_iter);
183 /* Insert pre-entered text if needed */
185 gtk_text_buffer_insert(buffer, &end_iter, inserttext, -1);
186 gtk_text_buffer_get_end_iter(buffer, &end_iter); /* update after text insertion */
189 /* Apply the correct style to the input prompt */
190 GtkTextIter input_iter;
191 gtk_text_buffer_get_iter_at_mark(buffer, &input_iter, input_position);
192 gtk_text_buffer_apply_tag_by_name(buffer, "input", &input_iter, &end_iter);
194 gtk_text_view_set_editable(GTK_TEXT_VIEW(win->widget), TRUE);
196 g_signal_handler_unblock(buffer, win->insert_text_handler);
197 gtk_widget_grab_focus(win->widget);
203 * glk_request_line_event:
204 * @win: A text buffer or text grid window to request line input on.
205 * @buf: A buffer of at least @maxlen bytes.
206 * @maxlen: Length of the buffer.
207 * @initlen: The number of characters in @buf to pre-enter.
209 * Requests input of a line of Latin-1 characters. A window cannot have requests
210 * for both character and line input at the same time. Nor can it have requests
211 * for line input of both types (Latin-1 and Unicode). It is illegal to call
212 * glk_request_line_event() if the window already has a pending request for
213 * either character or line input.
215 * The @buf argument is a pointer to space where the line input will be stored.
216 * (This may not be %NULL.) @maxlen is the length of this space, in bytes; the
217 * library will not accept more characters than this. If @initlen is nonzero,
218 * then the first @initlen bytes of @buf will be entered as pre-existing input
219 * — just as if the player had typed them himself. (The player can continue
220 * composing after this pre-entered input, or delete it or edit as usual.)
222 * The contents of the buffer are undefined until the input is completed (either
223 * by a line input event, or glk_cancel_line_event(). The library may or may not
224 * fill in the buffer as the player composes, while the input is still pending;
225 * it is illegal to change the contents of the buffer yourself.
228 glk_request_line_event(winid_t win, char *buf, glui32 maxlen, glui32 initlen)
230 VALID_WINDOW(win, return);
231 g_return_if_fail(buf);
232 g_return_if_fail(win->type != wintype_TextBuffer || win->type != wintype_TextGrid);
233 g_return_if_fail(initlen <= maxlen);
235 cancel_old_input_request(win);
237 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
239 /* Register the buffer */
240 if(glk_data->register_arr)
241 win->buffer_rock = (*glk_data->register_arr)(buf, maxlen, "&+#!Cn");
243 win->input_request_type = INPUT_REQUEST_LINE;
244 win->line_input_buffer = buf;
245 win->line_input_buffer_max_len = maxlen;
247 gchar *inserttext = (initlen > 0)? g_strndup(buf, initlen) : g_strdup("");
250 case wintype_TextBuffer:
251 text_buffer_request_line_event_common(win, maxlen, (initlen > 0), inserttext);
253 case wintype_TextGrid:
254 text_grid_request_line_event_common(win, maxlen, (initlen > 0), inserttext);
258 g_signal_handler_unblock(win->widget, win->line_input_keypress_handler);
260 /* Emit the "waiting" signal to let listeners know we are ready for input */
261 g_signal_emit_by_name(glk_data->self, "waiting");
265 * glk_request_line_event_uni:
266 * @win: A text buffer or text grid window to request line input on.
267 * @buf: A buffer of at least @maxlen characters.
268 * @maxlen: Length of the buffer.
269 * @initlen: The number of characters in @buf to pre-enter.
271 * Request input of a line of Unicode characters. This works the same as
272 * glk_request_line_event(), except the result is stored in an array of
273 * <type>glui32</type> values instead of an array of characters, and the values
274 * may be any valid Unicode code points.
276 * The result will be in Unicode Normalization Form C. This basically means that
277 * composite characters will be single characters where possible, instead of
278 * sequences of base and combining marks. See
279 * <ulink url="http://www.unicode.org/reports/tr15/">Unicode Standard Annex
280 * #15</ulink> for the details.
283 glk_request_line_event_uni(winid_t win, glui32 *buf, glui32 maxlen, glui32 initlen)
285 VALID_WINDOW(win, return);
286 g_return_if_fail(buf);
287 g_return_if_fail(win->type != wintype_TextBuffer || win->type != wintype_TextGrid);
288 g_return_if_fail(initlen <= maxlen);
290 cancel_old_input_request(win);
291 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
293 /* Register the buffer */
294 if(glk_data->register_arr)
295 win->buffer_rock = (*glk_data->register_arr)(buf, maxlen, "&+#!Iu");
299 win->input_request_type = INPUT_REQUEST_LINE_UNICODE;
300 win->line_input_buffer_unicode = buf;
301 win->line_input_buffer_max_len = maxlen;
305 utf8 = convert_ucs4_to_utf8(buf, initlen);
314 case wintype_TextBuffer:
315 text_buffer_request_line_event_common(win, maxlen, (initlen > 0), utf8);
317 case wintype_TextGrid:
318 text_grid_request_line_event_common(win, maxlen, (initlen > 0), utf8);
321 g_signal_handler_unblock(win->widget, win->line_input_keypress_handler);
324 /* Emit the "waiting" signal to let listeners know we are ready for input */
325 g_signal_emit_by_name(glk_data->self, "waiting");
329 * glk_cancel_line_event:
330 * @win: A text buffer or text grid window to cancel line input on.
331 * @event: Will be filled in if the user had already input something.
333 * This cancels a pending request for line input. (Either Latin-1 or Unicode.)
335 * The event pointed to by the event argument will be filled in as if the
336 * player had hit <keycap>enter</keycap>, and the input composed so far will be
337 * stored in the buffer; see below. If you do not care about this information,
338 * pass %NULL as the @event argument. (The buffer will still be filled.)
340 * For convenience, it is legal to call glk_cancel_line_event() even if there
341 * is no line input request on that window. The event type will be set to
342 * %evtype_None in this case.
345 glk_cancel_line_event(winid_t win, event_t *event)
347 VALID_WINDOW(win, return);
348 g_return_if_fail(win->type != wintype_TextBuffer || win->type != wintype_TextGrid);
351 event->type = evtype_None;
357 if(win->input_request_type != INPUT_REQUEST_LINE && win->input_request_type != INPUT_REQUEST_LINE_UNICODE)
360 g_signal_handler_block( win->widget, win->line_input_keypress_handler );
362 int chars_written = 0;
365 if(win->type == wintype_TextGrid) {
366 chars_written = finish_text_grid_line_input(win, FALSE);
367 } else if(win->type == wintype_TextBuffer) {
368 gtk_text_view_set_editable( GTK_TEXT_VIEW(win->widget), FALSE );
369 GtkTextBuffer *window_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(win->widget) );
370 g_signal_handler_block(window_buffer, win->insert_text_handler);
371 chars_written = finish_text_buffer_line_input(win, FALSE);
375 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
376 if(glk_data->unregister_arr)
378 if(win->input_request_type == INPUT_REQUEST_LINE_UNICODE)
379 (*glk_data->unregister_arr)(win->line_input_buffer_unicode, win->line_input_buffer_max_len, "&+#!Iu", win->buffer_rock);
381 (*glk_data->unregister_arr)(win->line_input_buffer, win->line_input_buffer_max_len, "&+#!Cn", win->buffer_rock);
384 if(event != NULL && chars_written > 0) {
385 event->type = evtype_LineInput;
386 event->val1 = chars_written;
390 /* Helper function: Turn off shutdown key-press-event signal handler */
392 turn_off_handler(GNode *node)
394 winid_t win = node->data;
395 g_signal_handler_block(win->widget, win->shutdown_keypress_handler);
396 return FALSE; /* don't stop */
399 /* Internal function: Callback for signal key-press-event while waiting for shutdown. */
401 on_shutdown_key_press_event(GtkWidget *widget, GdkEventKey *event, winid_t win)
403 ChimaraGlk *glk = CHIMARA_GLK(gtk_widget_get_ancestor(widget, CHIMARA_TYPE_GLK));
405 CHIMARA_GLK_USE_PRIVATE(glk, priv);
407 /* Turn off all the signal handlers */
408 if(priv->root_window)
409 g_node_traverse(priv->root_window, G_IN_ORDER, G_TRAVERSE_LEAVES, -1, (GNodeTraverseFunc)turn_off_handler, NULL);
411 /* Signal the Glk library that it can shut everything down now */
412 g_mutex_lock(priv->shutdown_lock);
413 g_cond_signal(priv->shutdown_key_pressed);
414 g_mutex_unlock(priv->shutdown_lock);
416 return TRUE; /* block the event */
419 /* Internal function: General callback for signal key-press-event on a text buffer or text grid window. Used in character input on both text buffers and grids. Blocked when not in use. */
421 on_char_input_key_press_event(GtkWidget *widget, GdkEventKey *event, winid_t win)
423 /* Ignore modifier keys, otherwise the char input will already trigger on
424 the shift key when the user tries to type a capital letter */
425 if(event->is_modifier)
426 return FALSE; /* don't stop the event */
428 /* All text up to the input position is now regarded as being read by the user */
429 if(win->type == wintype_TextBuffer)
432 glui32 keycode = keyval_to_glk_keycode(event->keyval, win->input_request_type == INPUT_REQUEST_CHARACTER_UNICODE);
434 ChimaraGlk *glk = CHIMARA_GLK(gtk_widget_get_ancestor(widget, CHIMARA_TYPE_GLK));
436 event_throw(glk, evtype_CharInput, win, keycode, 0);
437 g_signal_emit_by_name(glk, "char-input", win->rock, event->keyval);
439 /* Only one keypress will be handled */
440 win->input_request_type = INPUT_REQUEST_NONE;
441 g_signal_handler_block(win->widget, win->char_input_keypress_handler);
447 on_line_input_key_press_event(GtkWidget *widget, GdkEventKey *event, winid_t win)
451 case wintype_TextBuffer:
452 /* All text up to the input position is now regarded as being read by the user */
455 /* History up/down */
456 if(event->keyval == GDK_Up || event->keyval == GDK_KP_Up
457 || event->keyval == GDK_Down || event->keyval == GDK_KP_Down)
459 /* Prevent falling off the end of the history list */
460 if(win->history == NULL)
462 if( (event->keyval == GDK_Up || event->keyval == GDK_KP_Up)
463 && win->history_pos && win->history_pos->next == NULL)
465 if( (event->keyval == GDK_Down || event->keyval == GDK_KP_Down)
466 && (win->history_pos == NULL || win->history_pos->prev == NULL) )
469 GtkTextBuffer *buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(win->widget));
470 GtkTextIter start, end;
471 /* Erase any text that was already typed */
472 GtkTextMark *input_position = gtk_text_buffer_get_mark(buffer, "input_position");
473 gtk_text_buffer_get_iter_at_mark(buffer, &start, input_position);
474 gtk_text_buffer_get_end_iter(buffer, &end);
476 if(win->history_pos == NULL) {
477 gchar *current_input = gtk_text_buffer_get_text(buffer, &start, &end, FALSE);
478 win->history = g_list_prepend(win->history, current_input);
479 win->history_pos = win->history;
482 gtk_text_buffer_delete(buffer, &start, &end);
484 if(event->keyval == GDK_Up || event->keyval == GDK_KP_Up)
487 win->history_pos = g_list_next(win->history_pos);
489 win->history_pos = win->history;
492 win->history_pos = g_list_previous(win->history_pos);
494 /* Insert the history item into the window */
495 gtk_text_buffer_get_end_iter(buffer, &end);
497 g_signal_handler_block(buffer, win->insert_text_handler);
498 gtk_text_buffer_insert_with_tags_by_name(buffer, &end, win->history_pos->data, -1, "input", NULL);
499 g_signal_handler_unblock(buffer, win->insert_text_handler);
503 /* Move to beginning/end of input field */
504 else if(event->keyval == GDK_Home) {
505 GtkTextBuffer *buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(win->widget));
506 GtkTextIter input_iter;
507 GtkTextMark *input_position = gtk_text_buffer_get_mark(buffer, "input_position");
508 gtk_text_buffer_get_iter_at_mark(buffer, &input_iter, input_position);
509 gtk_text_buffer_place_cursor(buffer, &input_iter);
512 else if(event->keyval == GDK_End) {
513 GtkTextBuffer *buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(win->widget));
514 GtkTextIter end_iter;
515 gtk_text_buffer_get_end_iter(buffer, &end_iter);
516 gtk_text_buffer_place_cursor(buffer, &end_iter);
520 /* Handle the enter key, which could occur in the middle of the sentence. */
521 else if(event->keyval == GDK_Return || event->keyval == GDK_KP_Enter) {
522 GtkTextBuffer *buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(win->widget));
523 GtkTextIter end_iter;
524 gtk_text_buffer_get_end_iter(buffer, &end_iter);
525 gtk_text_buffer_place_cursor(buffer, &end_iter);
531 /* If this is a text grid window, then redirect the key press to the line input GtkEntry */
532 case wintype_TextGrid:
534 if(event->keyval == GDK_Up || event->keyval == GDK_KP_Up
535 || event->keyval == GDK_Down || event->keyval == GDK_KP_Down
536 || event->keyval == GDK_Left || event->keyval == GDK_KP_Left
537 || event->keyval == GDK_Right || event->keyval == GDK_KP_Right
538 || event->keyval == GDK_Tab || event->keyval == GDK_KP_Tab
539 || event->keyval == GDK_Page_Up || event->keyval == GDK_KP_Page_Up
540 || event->keyval == GDK_Page_Down || event->keyval == GDK_KP_Page_Down
541 || event->keyval == GDK_Home || event->keyval == GDK_KP_Home
542 || event->keyval == GDK_End || event->keyval == GDK_KP_End)
543 return FALSE; /* Don't redirect these keys */
544 gtk_widget_grab_focus(win->input_entry);
545 gtk_editable_set_position(GTK_EDITABLE(win->input_entry), -1);
546 gboolean retval = TRUE;
547 g_signal_emit_by_name(win->input_entry, "key-press-event", event, &retval);
548 return retval; /* Block this key event if the entry handled it */
554 /* Internal function: finish handling a line input request, for both text grid and text buffer windows. */
556 write_to_window_buffer(winid_t win, const gchar *inserted_text)
560 /* Convert the string from UTF-8 to Latin-1 or Unicode */
561 if(win->input_request_type == INPUT_REQUEST_LINE)
564 gchar *latin1 = convert_utf8_to_latin1(inserted_text, &bytes_written);
569 /* Place input in the echo stream */
570 if(win->echo_stream != NULL)
571 glk_put_string_stream(win->echo_stream, latin1);
573 /* Copy the string (bytes_written does not include the NULL at the end) */
574 copycount = MIN(win->line_input_buffer_max_len, bytes_written);
575 memcpy(win->line_input_buffer, latin1, copycount);
578 else if(win->input_request_type == INPUT_REQUEST_LINE_UNICODE)
581 gunichar *unicode = convert_utf8_to_ucs4(inserted_text, &items_written);
586 /* Place input in the echo stream */
587 if(win->echo_stream != NULL)
588 glk_put_string_stream_uni(win->echo_stream, unicode);
590 /* Copy the string (but not the NULL at the end) */
591 copycount = MIN(win->line_input_buffer_max_len, items_written);
592 memcpy(win->line_input_buffer_unicode, unicode, copycount * sizeof(gunichar));
596 WARNING("Wrong input request type");
598 win->input_request_type = INPUT_REQUEST_NONE;
602 /* Internal function: Retrieves the input of a TextBuffer window and stores it in the window buffer.
603 * Returns the number of characters written, suitable for inclusion in a line input event. */
605 finish_text_buffer_line_input(winid_t win, gboolean emit_signal)
607 VALID_WINDOW(win, return 0);
608 g_return_val_if_fail(win->type == wintype_TextBuffer, 0);
610 GtkTextIter start_iter, end_iter, last_character;
612 GtkTextBuffer *window_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(win->widget) );
613 GtkTextMark *input_position = gtk_text_buffer_get_mark(window_buffer, "input_position");
614 gtk_text_buffer_get_iter_at_mark(window_buffer, &start_iter, input_position);
615 gtk_text_buffer_get_end_iter(window_buffer, &end_iter);
616 gtk_text_buffer_get_end_iter(window_buffer, &last_character);
617 gtk_text_iter_backward_cursor_position(&last_character);
619 gchar* last_char = gtk_text_buffer_get_text(window_buffer, &last_character, &end_iter, FALSE);
621 if( strchr(last_char, '\n') != NULL )
622 gtk_text_iter_backward_cursor_position(&end_iter);
624 gchar* inserted_text = gtk_text_buffer_get_text(window_buffer, &start_iter, &end_iter, FALSE);
626 int chars_written = write_to_window_buffer(win, inserted_text);
629 ChimaraGlk *glk = CHIMARA_GLK(gtk_widget_get_ancestor(win->widget, CHIMARA_TYPE_GLK));
631 g_signal_emit_by_name(glk, "line-input", win->rock, inserted_text);
634 /* Add the text to the window input history */
635 if(win->history_pos != NULL)
637 g_free(win->history->data);
638 win->history = g_list_delete_link(win->history, win->history);
640 if(*inserted_text != 0)
641 win->history = g_list_prepend(win->history, g_strdup(inserted_text));
643 win->history_pos = NULL;
645 g_free(inserted_text);
647 return chars_written;
650 /* Internal function: Retrieves the input of a TextGrid window and stores it in the window buffer.
651 * Returns the number of characters written, suitable for inclusion in a line input event. */
653 finish_text_grid_line_input(winid_t win, gboolean emit_signal)
655 VALID_WINDOW(win, return 0);
656 g_return_val_if_fail(win->type == wintype_TextGrid, 0);
658 GtkTextBuffer *buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(win->widget) );
660 gchar *text = g_strdup( gtk_entry_get_text(GTK_ENTRY(win->input_entry)) );
661 /* Move the focus back into the text view */
662 gtk_widget_grab_focus(win->widget);
663 /* Remove entry widget from text view */
664 /* Should be ok even though this is the widget's own signal handler */
665 gtk_container_remove( GTK_CONTAINER(win->widget), GTK_WIDGET(win->input_entry) );
666 win->input_entry = NULL;
667 /* Delete the child anchor */
668 GtkTextIter start, end;
669 gtk_text_buffer_get_iter_at_child_anchor(buffer, &start, win->input_anchor);
671 gtk_text_iter_forward_char(&end); /* Point after the child anchor */
672 gtk_text_buffer_delete(buffer, &start, &end);
673 win->input_anchor = NULL;
675 gchar *spaces = g_strnfill(win->input_length - g_utf8_strlen(text, -1), ' ');
676 gchar *text_to_insert = g_strconcat(text, spaces, NULL);
678 gtk_text_buffer_insert(buffer, &start, text_to_insert, -1);
679 g_free(text_to_insert);
681 int chars_written = write_to_window_buffer(win, text);
684 ChimaraGlk *glk = CHIMARA_GLK(gtk_widget_get_ancestor(win->widget, CHIMARA_TYPE_GLK));
686 g_signal_emit_by_name(glk, "line-input", win->rock, text);
689 /* Add the text to the window input history */
690 if(win->history_pos != NULL)
692 g_free(win->history->data);
693 win->history = g_list_delete_link(win->history, win->history);
696 win->history = g_list_prepend(win->history, g_strdup(text));
697 win->history_pos = NULL;
700 return chars_written;
703 /* Internal function: Callback for signal insert-text on a text buffer window.
704 Runs after the default handler has already inserted the text.
705 FIXME: This function assumes that newline was the last character typed into the
706 window. That assumption is wrong if, for example, text containing a newline was
707 pasted into the window. */
709 after_window_insert_text(GtkTextBuffer *textbuffer, GtkTextIter *location, gchar *text, gint len, winid_t win)
711 GtkTextBuffer *window_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(win->widget) );
713 /* Set the history position to NULL and erase the text we were already editing */
714 if(win->history_pos != NULL)
716 g_free(win->history->data);
717 win->history = g_list_delete_link(win->history, win->history);
718 win->history_pos = NULL;
720 if( strchr(text, '\n') != NULL )
722 /* Remove signal handlers */
723 g_signal_handler_block(window_buffer, win->insert_text_handler);
724 g_signal_handler_block(win->widget, win->line_input_keypress_handler);
726 /* Make the window uneditable again and retrieve the text that was input */
727 gtk_text_view_set_editable(GTK_TEXT_VIEW(win->widget), FALSE);
729 int chars_written = finish_text_buffer_line_input(win, TRUE);
730 ChimaraGlk *glk = CHIMARA_GLK(gtk_widget_get_ancestor(win->widget, CHIMARA_TYPE_GLK));
731 event_throw(glk, evtype_LineInput, win, chars_written, 0);
734 /* Apply the 'input' style to the text that was entered */
735 GtkTextIter end_iter;
736 gtk_text_buffer_get_end_iter(window_buffer, &end_iter);
737 GtkTextIter input_iter;
738 GtkTextMark *input_position = gtk_text_buffer_get_mark(window_buffer, "input_position");
739 gtk_text_buffer_get_iter_at_mark(window_buffer, &input_iter, input_position);
740 gtk_text_buffer_apply_tag_by_name(window_buffer, "input", &input_iter, &end_iter);
743 /* Internal function: Callback for signal activate on the line input GtkEntry
744 in a text grid window. */
746 on_input_entry_activate(GtkEntry *input_entry, winid_t win)
748 g_signal_handler_block(win->widget, win->line_input_keypress_handler);
750 int chars_written = finish_text_grid_line_input(win, TRUE);
751 ChimaraGlk *glk = CHIMARA_GLK(gtk_widget_get_ancestor(win->widget, CHIMARA_TYPE_GLK));
752 event_throw(glk, evtype_LineInput, win, chars_written, 0);
755 /* Internal function: Callback for signal key-press-event on the line input
756 GtkEntry in a text grid window. */
758 on_input_entry_key_press_event(GtkEntry *input_entry, GdkEventKey *event, winid_t win)
760 if(event->keyval == GDK_Up || event->keyval == GDK_KP_Up
761 || event->keyval == GDK_Down || event->keyval == GDK_KP_Down)
763 /* Prevent falling off the end of the history list */
764 if( (event->keyval == GDK_Up || event->keyval == GDK_KP_Up)
765 && win->history_pos && win->history_pos->next == NULL)
767 if( (event->keyval == GDK_Down || event->keyval == GDK_KP_Down)
768 && (win->history_pos == NULL || win->history_pos->prev == NULL) )
771 if(win->history_pos == NULL)
773 const gchar *current_input = gtk_entry_get_text(input_entry);
774 win->history = g_list_prepend(win->history, g_strdup(current_input));
775 win->history_pos = win->history;
778 if(event->keyval == GDK_Up || event->keyval == GDK_KP_Up)
781 win->history_pos = g_list_next(win->history_pos);
783 win->history_pos = win->history;
786 win->history_pos = g_list_previous(win->history_pos);
788 /* Insert the history item into the window */
789 g_signal_handler_block(input_entry, win->line_input_entry_changed);
790 gtk_entry_set_text(input_entry, win->history_pos->data);
791 g_signal_handler_unblock(input_entry, win->line_input_entry_changed);
798 on_input_entry_changed(GtkEditable *editable, winid_t win)
800 /* Set the history position to NULL and erase the text we were already editing */
801 if(win->history_pos != NULL)
803 g_free(win->history->data);
804 win->history = g_list_delete_link(win->history, win->history);
805 win->history_pos = NULL;
810 keyval_to_glk_keycode(guint keyval, gboolean unicode)
815 case GDK_KP_Up: return keycode_Up;
817 case GDK_KP_Down: return keycode_Down;
819 case GDK_KP_Left: return keycode_Left;
821 case GDK_KP_Right: return keycode_Right;
824 case GDK_KP_Enter: return keycode_Return;
827 case GDK_KP_Delete: return keycode_Delete;
828 case GDK_Escape: return keycode_Escape;
830 case GDK_KP_Tab: return keycode_Tab;
832 case GDK_KP_Page_Up: return keycode_PageUp;
834 case GDK_KP_Page_Down: return keycode_PageDown;
836 case GDK_KP_Home: return keycode_Home;
838 case GDK_KP_End: return keycode_End;
840 case GDK_KP_F1: return keycode_Func1;
842 case GDK_KP_F2: return keycode_Func2;
844 case GDK_KP_F3: return keycode_Func3;
846 case GDK_KP_F4: return keycode_Func4;
847 case GDK_F5: return keycode_Func5;
848 case GDK_F6: return keycode_Func6;
849 case GDK_F7: return keycode_Func7;
850 case GDK_F8: return keycode_Func8;
851 case GDK_F9: return keycode_Func9;
852 case GDK_F10: return keycode_Func10;
853 case GDK_F11: return keycode_Func11;
854 case GDK_F12: return keycode_Func12;
856 keycode = gdk_keyval_to_unicode(keyval);
857 /* If keycode is 0, then keyval was not recognized; also return
858 unknown if Latin-1 input was requested and the character is not in
860 if(keycode == 0 || (!unicode && keycode > 255))
861 return keycode_Unknown;
867 force_char_input_from_queue(winid_t win, event_t *event)
869 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
870 guint keyval = GPOINTER_TO_UINT(g_async_queue_pop(glk_data->char_input_queue));
872 glk_cancel_char_event(win);
875 ChimaraGlk *glk = CHIMARA_GLK(gtk_widget_get_ancestor(win->widget, CHIMARA_TYPE_GLK));
877 g_signal_emit_by_name(glk, "char-input", win->rock, keyval);
880 event->type = evtype_CharInput;
882 event->val1 = keyval_to_glk_keycode(keyval, win->input_request_type == INPUT_REQUEST_CHARACTER_UNICODE);
887 force_line_input_from_queue(winid_t win, event_t *event)
889 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
890 const gchar *text = g_async_queue_pop(glk_data->line_input_queue);
891 glui32 chars_written = 0;
894 if(win->type == wintype_TextBuffer)
896 GtkTextBuffer *buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(win->widget) );
897 GtkTextIter start, end;
899 /* Remove signal handlers so the line input doesn't get picked up again */
900 g_signal_handler_block(buffer, win->insert_text_handler);
901 g_signal_handler_block(win->widget, win->line_input_keypress_handler);
903 /* Erase any text that was already typed */
904 GtkTextMark *input_position = gtk_text_buffer_get_mark(buffer, "input_position");
905 gtk_text_buffer_get_iter_at_mark(buffer, &start, input_position);
906 gtk_text_buffer_get_end_iter(buffer, &end);
907 gtk_text_buffer_delete(buffer, &start, &end);
909 /* Make the window uneditable again */
910 gtk_text_view_set_editable(GTK_TEXT_VIEW(win->widget), FALSE);
912 /* Insert the forced input into the window */
913 gtk_text_buffer_get_end_iter(buffer, &end);
914 gchar *text_to_insert = g_strconcat(text, "\n", NULL);
915 gtk_text_buffer_insert_with_tags_by_name(buffer, &end, text_to_insert, -1, "input", NULL);
916 chars_written = finish_text_buffer_line_input(win, TRUE);
918 else if(win->type == wintype_TextGrid)
920 /* Remove signal handlers so the line input doesn't get picked up again */
921 g_signal_handler_block(win->widget, win->char_input_keypress_handler);
923 /* Insert the forced input into the window */
924 gtk_entry_set_text(GTK_ENTRY(win->input_entry), text);
925 chars_written = finish_text_grid_line_input(win, TRUE);
929 event->type = evtype_LineInput;
931 event->val1 = chars_written;
935 /*** Internal function: cancels any pending input requests on the window and presents a warning if not INPUT_REQUEST_NONE ***/
937 cancel_old_input_request(winid_t win)
939 switch(win->input_request_type) {
940 case INPUT_REQUEST_NONE:
941 break; /* All is well */
942 case INPUT_REQUEST_CHARACTER:
943 case INPUT_REQUEST_CHARACTER_UNICODE:
944 glk_cancel_char_event(win);
945 WARNING("Cancelling pending char event");
947 case INPUT_REQUEST_LINE:
948 case INPUT_REQUEST_LINE_UNICODE:
949 glk_cancel_line_event(win, NULL);
950 WARNING("Cancelling pending line event");
953 WARNING("Could not cancel pending input request: unknown input request");