4 #include "chimara-glk-private.h"
6 extern GPrivate *glk_data_key;
8 /* Forward declarations */
9 static int finish_text_buffer_line_input(winid_t win, gboolean emit_signal);
10 static int finish_text_grid_line_input(winid_t win, gboolean emit_signal);
11 static void cancel_old_input_request(winid_t win);
13 /* Internal function: code common to both flavors of char event request */
15 request_char_event_common(winid_t win, gboolean unicode)
17 VALID_WINDOW(win, return);
18 g_return_if_fail(win->type != wintype_TextBuffer || win->type != wintype_TextGrid);
20 cancel_old_input_request(win);
22 flush_window_buffer(win);
24 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
26 win->input_request_type = unicode? INPUT_REQUEST_CHARACTER_UNICODE : INPUT_REQUEST_CHARACTER;
27 g_signal_handler_unblock( win->widget, win->char_input_keypress_handler );
32 if(win->type == wintype_TextBuffer)
34 GtkTextBuffer *buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(win->widget) );
36 gtk_text_buffer_get_end_iter(buffer, &iter);
37 gtk_text_buffer_place_cursor(buffer, &iter);
38 gtk_text_view_scroll_mark_onscreen(GTK_TEXT_VIEW(win->widget), gtk_text_buffer_get_insert(buffer));
39 // Why doesn't this always work??
42 gtk_widget_grab_focus( GTK_WIDGET(win->widget) );
45 /* Emit the "waiting" signal to let listeners know we are ready for input */
46 g_signal_emit_by_name(glk_data->self, "waiting");
50 * glk_request_char_event:
51 * @win: A window to request char events from.
53 * Request input of a Latin-1 character or special key. A window cannot have
54 * requests for both character and line input at the same time. Nor can it have
55 * requests for character input of both types (Latin-1 and Unicode). It is
56 * illegal to call glk_request_char_event() if the window already has a pending
57 * request for either character or line input.
60 glk_request_char_event(winid_t win)
62 request_char_event_common(win, FALSE);
66 * glk_request_char_event_uni:
67 * @win: A window to request char events from.
69 * Request input of a Unicode character or special key. See
70 * glk_request_char_event().
73 glk_request_char_event_uni(winid_t win)
75 request_char_event_common(win, TRUE);
79 * glk_cancel_char_event:
80 * @win: A window to cancel the latest char event request on.
82 * This cancels a pending request for character input. (Either Latin-1 or
83 * Unicode.) For convenience, it is legal to call glk_cancel_char_event() even
84 * if there is no charcter input request on that window. Glk will ignore the
88 glk_cancel_char_event(winid_t win)
90 VALID_WINDOW(win, return);
91 g_return_if_fail(win->type != wintype_TextBuffer || win->type != wintype_TextGrid);
93 if(win->input_request_type == INPUT_REQUEST_CHARACTER || win->input_request_type == INPUT_REQUEST_CHARACTER_UNICODE)
95 win->input_request_type = INPUT_REQUEST_NONE;
96 g_signal_handler_block( win->widget, win->char_input_keypress_handler );
100 /* Internal function: Request either latin-1 or unicode line input, in a text grid window. */
102 text_grid_request_line_event_common(winid_t win, glui32 maxlen, gboolean insert, gchar *inserttext)
106 GtkTextBuffer *buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(win->widget) );
108 GtkTextMark *cursor = gtk_text_buffer_get_mark(buffer, "cursor_position");
109 GtkTextIter start_iter, end_iter;
110 gtk_text_buffer_get_iter_at_mark(buffer, &start_iter, cursor);
112 /* Determine the maximum length of the line input */
113 gint cursorpos = gtk_text_iter_get_line_offset(&start_iter);
114 /* Odd; the Glk spec says the maximum input length is
115 windowwidth - 1 - cursorposition. I say no, because if cursorposition is
116 zero, then the input should fill the whole line. FIXME??? */
117 win->input_length = MIN(win->width - cursorpos, win->line_input_buffer_max_len);
118 end_iter = start_iter;
119 gtk_text_iter_set_line_offset(&end_iter, cursorpos + win->input_length);
121 /* If the buffer currently has a selection with one bound in the middle of
122 the input field, then deselect it. Otherwise the input field gets trashed */
123 GtkTextIter start_sel, end_sel;
124 if( gtk_text_buffer_get_selection_bounds(buffer, &start_sel, &end_sel) )
126 if( gtk_text_iter_in_range(&start_sel, &start_iter, &end_iter) )
127 gtk_text_buffer_place_cursor(buffer, &end_sel);
128 if( gtk_text_iter_in_range(&end_sel, &start_iter, &end_iter) )
129 gtk_text_buffer_place_cursor(buffer, &start_sel);
132 /* Erase the text currently in the input field and replace it with a GtkEntry */
133 gtk_text_buffer_delete(buffer, &start_iter, &end_iter);
134 win->input_anchor = gtk_text_buffer_create_child_anchor(buffer, &start_iter);
135 win->input_entry = gtk_entry_new();
136 /* Set the entry's font to match that of the window */
137 GtkRcStyle *style = gtk_widget_get_modifier_style(win->widget); /* Don't free */
138 gtk_widget_modify_font(win->input_entry, style->font_desc);
139 /* Make the entry as small as possible to fit with the text */
140 gtk_entry_set_has_frame(GTK_ENTRY(win->input_entry), FALSE);
141 GtkBorder border = { 0, 0, 0, 0 };
142 gtk_entry_set_inner_border(GTK_ENTRY(win->input_entry), &border);
143 gtk_entry_set_max_length(GTK_ENTRY(win->input_entry), win->input_length);
144 gtk_entry_set_width_chars(GTK_ENTRY(win->input_entry), win->input_length);
146 /* Insert pre-entered text if needed */
148 gtk_entry_set_text(GTK_ENTRY(win->input_entry), inserttext);
150 /* Set background color of entry (TODO: implement as property) */
152 gdk_color_parse("grey", &background);
153 gtk_widget_modify_base(win->input_entry, GTK_STATE_NORMAL, &background);
155 g_signal_connect(win->input_entry, "activate", G_CALLBACK(on_input_entry_activate), win);
156 g_signal_connect(win->input_entry, "key-press-event", G_CALLBACK(on_input_entry_key_press_event), win);
157 win->line_input_entry_changed = g_signal_connect(win->input_entry, "changed", G_CALLBACK(on_input_entry_changed), win);
159 gtk_widget_show(win->input_entry);
160 gtk_text_view_add_child_at_anchor(GTK_TEXT_VIEW(win->widget), win->input_entry, win->input_anchor);
162 gtk_widget_grab_focus(win->input_entry);
167 /* Internal function: Request either latin-1 or unicode line input, in a text buffer window. */
169 text_buffer_request_line_event_common(winid_t win, glui32 maxlen, gboolean insert, gchar *inserttext)
171 flush_window_buffer(win);
175 GtkTextBuffer *buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(win->widget) );
177 /* Move the input_position mark to the end of the window_buffer */
178 GtkTextMark *input_position = gtk_text_buffer_get_mark(buffer, "input_position");
179 GtkTextIter end_iter;
180 gtk_text_buffer_get_end_iter(buffer, &end_iter);
181 gtk_text_buffer_move_mark(buffer, input_position, &end_iter);
183 /* Set the entire contents of the window_buffer as uneditable
184 * (so input can only be entered at the end) */
185 GtkTextIter start_iter;
186 gtk_text_buffer_get_start_iter(buffer, &start_iter);
187 gtk_text_buffer_remove_tag_by_name(buffer, "uneditable", &start_iter, &end_iter);
188 gtk_text_buffer_apply_tag_by_name(buffer, "uneditable", &start_iter, &end_iter);
190 /* Insert pre-entered text if needed */
192 gtk_text_buffer_insert(buffer, &end_iter, inserttext, -1);
193 gtk_text_buffer_get_end_iter(buffer, &end_iter); /* update after text insertion */
196 /* Scroll to input point */
197 gtk_text_view_scroll_mark_onscreen(GTK_TEXT_VIEW(win->widget), input_position);
199 /* Apply the correct style to the input prompt */
200 GtkTextIter input_iter;
201 gtk_text_buffer_get_iter_at_mark(buffer, &input_iter, input_position);
202 gtk_text_buffer_apply_tag_by_name(buffer, "input", &input_iter, &end_iter);
204 gtk_text_view_set_editable(GTK_TEXT_VIEW(win->widget), TRUE);
206 g_signal_handler_unblock(buffer, win->insert_text_handler);
207 gtk_widget_grab_focus(win->widget);
213 * glk_request_line_event:
214 * @win: A text buffer or text grid window to request line input on.
215 * @buf: A buffer of at least @maxlen bytes.
216 * @maxlen: Length of the buffer.
217 * @initlen: The number of characters in @buf to pre-enter.
219 * Requests input of a line of Latin-1 characters. A window cannot have requests
220 * for both character and line input at the same time. Nor can it have requests
221 * for line input of both types (Latin-1 and Unicode). It is illegal to call
222 * glk_request_line_event() if the window already has a pending request for
223 * either character or line input.
225 * The @buf argument is a pointer to space where the line input will be stored.
226 * (This may not be %NULL.) @maxlen is the length of this space, in bytes; the
227 * library will not accept more characters than this. If @initlen is nonzero,
228 * then the first @initlen bytes of @buf will be entered as pre-existing input
229 * — just as if the player had typed them himself. (The player can continue
230 * composing after this pre-entered input, or delete it or edit as usual.)
232 * The contents of the buffer are undefined until the input is completed (either
233 * by a line input event, or glk_cancel_line_event(). The library may or may not
234 * fill in the buffer as the player composes, while the input is still pending;
235 * it is illegal to change the contents of the buffer yourself.
238 glk_request_line_event(winid_t win, char *buf, glui32 maxlen, glui32 initlen)
240 VALID_WINDOW(win, return);
241 g_return_if_fail(buf);
242 g_return_if_fail(win->type != wintype_TextBuffer || win->type != wintype_TextGrid);
243 g_return_if_fail(initlen <= maxlen);
245 cancel_old_input_request(win);
247 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
249 /* Register the buffer */
250 if(glk_data->register_arr)
251 win->buffer_rock = (*glk_data->register_arr)(buf, maxlen, "&+#!Cn");
253 win->input_request_type = INPUT_REQUEST_LINE;
254 win->line_input_buffer = buf;
255 win->line_input_buffer_max_len = maxlen;
257 gchar *inserttext = (initlen > 0)? g_strndup(buf, initlen) : g_strdup("");
260 case wintype_TextBuffer:
261 text_buffer_request_line_event_common(win, maxlen, (initlen > 0), inserttext);
263 case wintype_TextGrid:
264 text_grid_request_line_event_common(win, maxlen, (initlen > 0), inserttext);
268 g_signal_handler_unblock(win->widget, win->line_input_keypress_handler);
270 /* Emit the "waiting" signal to let listeners know we are ready for input */
271 g_signal_emit_by_name(glk_data->self, "waiting");
275 * glk_request_line_event_uni:
276 * @win: A text buffer or text grid window to request line input on.
277 * @buf: A buffer of at least @maxlen characters.
278 * @maxlen: Length of the buffer.
279 * @initlen: The number of characters in @buf to pre-enter.
281 * Request input of a line of Unicode characters. This works the same as
282 * glk_request_line_event(), except the result is stored in an array of
283 * <type>glui32</type> values instead of an array of characters, and the values
284 * may be any valid Unicode code points.
286 * The result will be in Unicode Normalization Form C. This basically means that
287 * composite characters will be single characters where possible, instead of
288 * sequences of base and combining marks. See
289 * <ulink url="http://www.unicode.org/reports/tr15/">Unicode Standard Annex
290 * #15</ulink> for the details.
293 glk_request_line_event_uni(winid_t win, glui32 *buf, glui32 maxlen, glui32 initlen)
295 VALID_WINDOW(win, return);
296 g_return_if_fail(buf);
297 g_return_if_fail(win->type != wintype_TextBuffer || win->type != wintype_TextGrid);
298 g_return_if_fail(initlen <= maxlen);
300 cancel_old_input_request(win);
301 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
303 /* Register the buffer */
304 if(glk_data->register_arr)
305 win->buffer_rock = (*glk_data->register_arr)(buf, maxlen, "&+#!Iu");
307 win->input_request_type = INPUT_REQUEST_LINE_UNICODE;
308 win->line_input_buffer_unicode = buf;
309 win->line_input_buffer_max_len = maxlen;
313 utf8 = convert_ucs4_to_utf8(buf, initlen);
322 case wintype_TextBuffer:
323 text_buffer_request_line_event_common(win, maxlen, (initlen > 0), utf8);
325 case wintype_TextGrid:
326 text_grid_request_line_event_common(win, maxlen, (initlen > 0), utf8);
329 g_signal_handler_unblock(win->widget, win->line_input_keypress_handler);
332 /* Emit the "waiting" signal to let listeners know we are ready for input */
333 g_signal_emit_by_name(glk_data->self, "waiting");
337 * glk_cancel_line_event:
338 * @win: A text buffer or text grid window to cancel line input on.
339 * @event: Will be filled in if the user had already input something.
341 * This cancels a pending request for line input. (Either Latin-1 or Unicode.)
343 * The event pointed to by the event argument will be filled in as if the
344 * player had hit <keycap>enter</keycap>, and the input composed so far will be
345 * stored in the buffer; see below. If you do not care about this information,
346 * pass %NULL as the @event argument. (The buffer will still be filled.)
348 * For convenience, it is legal to call glk_cancel_line_event() even if there
349 * is no line input request on that window. The event type will be set to
350 * %evtype_None in this case.
353 glk_cancel_line_event(winid_t win, event_t *event)
355 VALID_WINDOW(win, return);
356 g_return_if_fail(win->type != wintype_TextBuffer || win->type != wintype_TextGrid);
359 event->type = evtype_None;
365 if(win->input_request_type != INPUT_REQUEST_LINE && win->input_request_type != INPUT_REQUEST_LINE_UNICODE)
368 g_signal_handler_block( win->widget, win->line_input_keypress_handler );
370 int chars_written = 0;
373 if(win->type == wintype_TextGrid) {
374 chars_written = finish_text_grid_line_input(win, FALSE);
375 } else if(win->type == wintype_TextBuffer) {
376 gtk_text_view_set_editable( GTK_TEXT_VIEW(win->widget), FALSE );
377 GtkTextBuffer *window_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(win->widget) );
378 g_signal_handler_block(window_buffer, win->insert_text_handler);
379 chars_written = finish_text_buffer_line_input(win, FALSE);
383 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
384 if(glk_data->unregister_arr)
386 if(win->input_request_type == INPUT_REQUEST_LINE_UNICODE)
387 (*glk_data->unregister_arr)(win->line_input_buffer_unicode, win->line_input_buffer_max_len, "&+#!Iu", win->buffer_rock);
389 (*glk_data->unregister_arr)(win->line_input_buffer, win->line_input_buffer_max_len, "&+#!Cn", win->buffer_rock);
392 if(event != NULL && chars_written > 0) {
393 event->type = evtype_LineInput;
394 event->val1 = chars_written;
398 /* Helper function: Turn off shutdown key-press-event signal handler */
400 turn_off_handler(GNode *node)
402 winid_t win = node->data;
403 g_signal_handler_block(win->widget, win->shutdown_keypress_handler);
404 return FALSE; /* don't stop */
407 /* Internal function: Callback for signal key-press-event while waiting for shutdown. */
409 on_shutdown_key_press_event(GtkWidget *widget, GdkEventKey *event, winid_t win)
411 ChimaraGlk *glk = CHIMARA_GLK(gtk_widget_get_ancestor(widget, CHIMARA_TYPE_GLK));
413 CHIMARA_GLK_USE_PRIVATE(glk, priv);
415 /* Turn off all the signal handlers */
416 if(priv->root_window)
417 g_node_traverse(priv->root_window, G_IN_ORDER, G_TRAVERSE_LEAVES, -1, (GNodeTraverseFunc)turn_off_handler, NULL);
419 /* Signal the Glk library that it can shut everything down now */
420 g_mutex_lock(priv->shutdown_lock);
421 g_cond_signal(priv->shutdown_key_pressed);
422 g_mutex_unlock(priv->shutdown_lock);
424 return TRUE; /* block the event */
427 /* 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. */
429 on_char_input_key_press_event(GtkWidget *widget, GdkEventKey *event, winid_t win)
431 glui32 keycode = keyval_to_glk_keycode(event->keyval, win->input_request_type == INPUT_REQUEST_CHARACTER_UNICODE);
433 ChimaraGlk *glk = CHIMARA_GLK(gtk_widget_get_ancestor(widget, CHIMARA_TYPE_GLK));
435 event_throw(glk, evtype_CharInput, win, keycode, 0);
436 g_signal_emit_by_name(glk, "char-input", win->rock, event->keyval);
438 /* Only one keypress will be handled */
439 win->input_request_type = INPUT_REQUEST_NONE;
440 g_signal_handler_block(win->widget, win->char_input_keypress_handler);
446 on_line_input_key_press_event(GtkWidget *widget, GdkEventKey *event, winid_t win)
450 case wintype_TextBuffer:
452 /* History up/down */
453 if(event->keyval == GDK_Up || event->keyval == GDK_KP_Up
454 || event->keyval == GDK_Down || event->keyval == GDK_KP_Down)
456 /* Prevent falling off the end of the history list */
457 if(win->history == NULL)
459 if( (event->keyval == GDK_Up || event->keyval == GDK_KP_Up)
460 && win->history_pos && win->history_pos->next == NULL)
462 if( (event->keyval == GDK_Down || event->keyval == GDK_KP_Down)
463 && (win->history_pos == NULL || win->history_pos->prev == NULL) )
466 GtkTextBuffer *buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(win->widget));
467 GtkTextIter start, end;
468 /* Erase any text that was already typed */
469 GtkTextMark *input_position = gtk_text_buffer_get_mark(buffer, "input_position");
470 gtk_text_buffer_get_iter_at_mark(buffer, &start, input_position);
471 gtk_text_buffer_get_end_iter(buffer, &end);
473 if(win->history_pos == NULL) {
474 gchar *current_input = gtk_text_buffer_get_text(buffer, &start, &end, FALSE);
475 win->history = g_list_prepend(win->history, current_input);
476 win->history_pos = win->history;
479 gtk_text_buffer_delete(buffer, &start, &end);
481 if(event->keyval == GDK_Up || event->keyval == GDK_KP_Up)
484 win->history_pos = g_list_next(win->history_pos);
486 win->history_pos = win->history;
489 win->history_pos = g_list_previous(win->history_pos);
491 /* Insert the history item into the window */
492 gtk_text_buffer_get_end_iter(buffer, &end);
494 g_signal_handler_block(buffer, win->insert_text_handler);
495 gtk_text_buffer_insert_with_tags_by_name(buffer, &end, win->history_pos->data, -1, "input", NULL);
496 g_signal_handler_unblock(buffer, win->insert_text_handler);
500 /* Move to beginning/end of input field */
501 else if(event->keyval == GDK_Home) {
502 GtkTextBuffer *buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(win->widget));
503 GtkTextIter input_iter;
504 GtkTextMark *input_position = gtk_text_buffer_get_mark(buffer, "input_position");
505 gtk_text_buffer_get_iter_at_mark(buffer, &input_iter, input_position);
506 gtk_text_buffer_place_cursor(buffer, &input_iter);
509 else if(event->keyval == GDK_End) {
510 GtkTextBuffer *buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(win->widget));
511 GtkTextIter end_iter;
512 gtk_text_buffer_get_end_iter(buffer, &end_iter);
513 gtk_text_buffer_place_cursor(buffer, &end_iter);
517 /* Handle the enter key, which could occur in the middle of the sentence. */
518 else if(event->keyval == GDK_Return || event->keyval == GDK_KP_Enter) {
519 GtkTextBuffer *buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(win->widget));
520 GtkTextIter end_iter;
521 gtk_text_buffer_get_end_iter(buffer, &end_iter);
522 gtk_text_buffer_place_cursor(buffer, &end_iter);
528 /* If this is a text grid window, then redirect the key press to the line input GtkEntry */
529 case wintype_TextGrid:
531 if(event->keyval == GDK_Up || event->keyval == GDK_KP_Up
532 || event->keyval == GDK_Down || event->keyval == GDK_KP_Down
533 || event->keyval == GDK_Left || event->keyval == GDK_KP_Left
534 || event->keyval == GDK_Right || event->keyval == GDK_KP_Right
535 || event->keyval == GDK_Tab || event->keyval == GDK_KP_Tab
536 || event->keyval == GDK_Page_Up || event->keyval == GDK_KP_Page_Up
537 || event->keyval == GDK_Page_Down || event->keyval == GDK_KP_Page_Down
538 || event->keyval == GDK_Home || event->keyval == GDK_KP_Home
539 || event->keyval == GDK_End || event->keyval == GDK_KP_End)
540 return FALSE; /* Don't redirect these keys */
541 gtk_widget_grab_focus(win->input_entry);
542 gtk_editable_set_position(GTK_EDITABLE(win->input_entry), -1);
543 gboolean retval = TRUE;
544 g_signal_emit_by_name(win->input_entry, "key-press-event", event, &retval);
545 return retval; /* Block this key event if the entry handled it */
551 /* Internal function: finish handling a line input request, for both text grid and text buffer windows. */
553 write_to_window_buffer(winid_t win, const gchar *inserted_text)
557 /* Convert the string from UTF-8 to Latin-1 or Unicode */
558 if(win->input_request_type == INPUT_REQUEST_LINE)
561 gchar *latin1 = convert_utf8_to_latin1(inserted_text, &bytes_written);
566 /* Place input in the echo stream */
567 if(win->echo_stream != NULL)
568 glk_put_string_stream(win->echo_stream, latin1);
570 /* Copy the string (bytes_written does not include the NULL at the end) */
571 copycount = MIN(win->line_input_buffer_max_len, bytes_written);
572 memcpy(win->line_input_buffer, latin1, copycount);
575 else if(win->input_request_type == INPUT_REQUEST_LINE_UNICODE)
578 gunichar *unicode = convert_utf8_to_ucs4(inserted_text, &items_written);
583 /* Place input in the echo stream */
584 if(win->echo_stream != NULL)
585 glk_put_string_stream_uni(win->echo_stream, unicode);
587 /* Copy the string (but not the NULL at the end) */
588 copycount = MIN(win->line_input_buffer_max_len, items_written);
589 memcpy(win->line_input_buffer_unicode, unicode, copycount * sizeof(gunichar));
593 WARNING("Wrong input request type");
595 win->input_request_type = INPUT_REQUEST_NONE;
599 /* Internal function: Retrieves the input of a TextBuffer window and stores it in the window buffer.
600 * Returns the number of characters written, suitable for inclusion in a line input event. */
602 finish_text_buffer_line_input(winid_t win, gboolean emit_signal)
604 VALID_WINDOW(win, return 0);
605 g_return_val_if_fail(win->type == wintype_TextBuffer, 0);
607 GtkTextIter start_iter, end_iter, last_character;
609 GtkTextBuffer *window_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(win->widget) );
610 GtkTextMark *input_position = gtk_text_buffer_get_mark(window_buffer, "input_position");
611 gtk_text_buffer_get_iter_at_mark(window_buffer, &start_iter, input_position);
612 gtk_text_buffer_get_end_iter(window_buffer, &end_iter);
613 gtk_text_buffer_get_end_iter(window_buffer, &last_character);
614 gtk_text_iter_backward_cursor_position(&last_character);
616 gchar* last_char = gtk_text_buffer_get_text(window_buffer, &last_character, &end_iter, FALSE);
618 if( strchr(last_char, '\n') != NULL )
619 gtk_text_iter_backward_cursor_position(&end_iter);
621 gchar* inserted_text = gtk_text_buffer_get_text(window_buffer, &start_iter, &end_iter, FALSE);
623 int chars_written = write_to_window_buffer(win, inserted_text);
626 ChimaraGlk *glk = CHIMARA_GLK(gtk_widget_get_ancestor(win->widget, CHIMARA_TYPE_GLK));
628 g_signal_emit_by_name(glk, "line-input", win->rock, inserted_text);
631 /* Add the text to the window input history */
632 if(win->history_pos != NULL)
634 g_free(win->history->data);
635 win->history = g_list_delete_link(win->history, win->history);
637 if(*inserted_text != 0)
638 win->history = g_list_prepend(win->history, g_strdup(inserted_text));
640 win->history_pos = NULL;
642 g_free(inserted_text);
644 return chars_written;
647 /* Internal function: Retrieves the input of a TextGrid window and stores it in the window buffer.
648 * Returns the number of characters written, suitable for inclusion in a line input event. */
650 finish_text_grid_line_input(winid_t win, gboolean emit_signal)
652 VALID_WINDOW(win, return 0);
653 g_return_val_if_fail(win->type == wintype_TextGrid, 0);
655 GtkTextBuffer *buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(win->widget) );
657 gchar *text = g_strdup( gtk_entry_get_text(GTK_ENTRY(win->input_entry)) );
658 /* Move the focus back into the text view */
659 gtk_widget_grab_focus(win->widget);
660 /* Remove entry widget from text view */
661 /* Should be ok even though this is the widget's own signal handler */
662 gtk_container_remove( GTK_CONTAINER(win->widget), GTK_WIDGET(win->input_entry) );
663 win->input_entry = NULL;
664 /* Delete the child anchor */
665 GtkTextIter start, end;
666 gtk_text_buffer_get_iter_at_child_anchor(buffer, &start, win->input_anchor);
668 gtk_text_iter_forward_char(&end); /* Point after the child anchor */
669 gtk_text_buffer_delete(buffer, &start, &end);
670 win->input_anchor = NULL;
672 gchar *spaces = g_strnfill(win->input_length - g_utf8_strlen(text, -1), ' ');
673 gchar *text_to_insert = g_strconcat(text, spaces, NULL);
675 gtk_text_buffer_insert(buffer, &start, text_to_insert, -1);
676 g_free(text_to_insert);
678 int chars_written = write_to_window_buffer(win, text);
681 ChimaraGlk *glk = CHIMARA_GLK(gtk_widget_get_ancestor(win->widget, CHIMARA_TYPE_GLK));
683 g_signal_emit_by_name(glk, "line-input", win->rock, text);
686 /* Add the text to the window input history */
687 if(win->history_pos != NULL)
689 g_free(win->history->data);
690 win->history = g_list_delete_link(win->history, win->history);
693 win->history = g_list_prepend(win->history, g_strdup(text));
694 win->history_pos = NULL;
697 return chars_written;
700 /* Internal function: Callback for signal insert-text on a text buffer window.
701 Runs after the default handler has already inserted the text.
702 FIXME: This function assumes that newline was the last character typed into the
703 window. That assumption is wrong if, for example, text containing a newline was
704 pasted into the window. */
706 after_window_insert_text(GtkTextBuffer *textbuffer, GtkTextIter *location, gchar *text, gint len, winid_t win)
708 GtkTextBuffer *window_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(win->widget) );
710 /* Set the history position to NULL and erase the text we were already editing */
711 if(win->history_pos != NULL)
713 g_free(win->history->data);
714 win->history = g_list_delete_link(win->history, win->history);
715 win->history_pos = NULL;
717 if( strchr(text, '\n') != NULL )
719 /* Remove signal handlers */
720 g_signal_handler_block(window_buffer, win->insert_text_handler);
721 g_signal_handler_block(win->widget, win->line_input_keypress_handler);
723 /* Make the window uneditable again and retrieve the text that was input */
724 gtk_text_view_set_editable(GTK_TEXT_VIEW(win->widget), FALSE);
726 int chars_written = finish_text_buffer_line_input(win, TRUE);
727 ChimaraGlk *glk = CHIMARA_GLK(gtk_widget_get_ancestor(win->widget, CHIMARA_TYPE_GLK));
728 event_throw(glk, evtype_LineInput, win, chars_written, 0);
731 /* Apply the 'input' style to the text that was entered */
732 GtkTextIter end_iter;
733 gtk_text_buffer_get_end_iter(window_buffer, &end_iter);
734 GtkTextIter input_iter;
735 GtkTextMark *input_position = gtk_text_buffer_get_mark(window_buffer, "input_position");
736 gtk_text_buffer_get_iter_at_mark(window_buffer, &input_iter, input_position);
737 gtk_text_buffer_apply_tag_by_name(window_buffer, "input", &input_iter, &end_iter);
740 /* Internal function: Callback for signal activate on the line input GtkEntry
741 in a text grid window. */
743 on_input_entry_activate(GtkEntry *input_entry, winid_t win)
745 g_signal_handler_block(win->widget, win->line_input_keypress_handler);
747 int chars_written = finish_text_grid_line_input(win, TRUE);
748 ChimaraGlk *glk = CHIMARA_GLK(gtk_widget_get_ancestor(win->widget, CHIMARA_TYPE_GLK));
749 event_throw(glk, evtype_LineInput, win, chars_written, 0);
752 /* Internal function: Callback for signal key-press-event on the line input
753 GtkEntry in a text grid window. */
755 on_input_entry_key_press_event(GtkEntry *input_entry, GdkEventKey *event, winid_t win)
757 if(event->keyval == GDK_Up || event->keyval == GDK_KP_Up
758 || event->keyval == GDK_Down || event->keyval == GDK_KP_Down)
760 /* Prevent falling off the end of the history list */
761 if( (event->keyval == GDK_Up || event->keyval == GDK_KP_Up)
762 && win->history_pos && win->history_pos->next == NULL)
764 if( (event->keyval == GDK_Down || event->keyval == GDK_KP_Down)
765 && (win->history_pos == NULL || win->history_pos->prev == NULL) )
768 if(win->history_pos == NULL)
770 const gchar *current_input = gtk_entry_get_text(input_entry);
771 win->history = g_list_prepend(win->history, g_strdup(current_input));
772 win->history_pos = win->history;
775 if(event->keyval == GDK_Up || event->keyval == GDK_KP_Up)
778 win->history_pos = g_list_next(win->history_pos);
780 win->history_pos = win->history;
783 win->history_pos = g_list_previous(win->history_pos);
785 /* Insert the history item into the window */
786 g_signal_handler_block(input_entry, win->line_input_entry_changed);
787 gtk_entry_set_text(input_entry, win->history_pos->data);
788 g_signal_handler_unblock(input_entry, win->line_input_entry_changed);
795 on_input_entry_changed(GtkEditable *editable, winid_t win)
797 /* Set the history position to NULL and erase the text we were already editing */
798 if(win->history_pos != NULL)
800 g_free(win->history->data);
801 win->history = g_list_delete_link(win->history, win->history);
802 win->history_pos = NULL;
807 keyval_to_glk_keycode(guint keyval, gboolean unicode)
812 case GDK_KP_Up: return keycode_Up;
814 case GDK_KP_Down: return keycode_Down;
816 case GDK_KP_Left: return keycode_Left;
818 case GDK_KP_Right: return keycode_Right;
821 case GDK_KP_Enter: return keycode_Return;
824 case GDK_KP_Delete: return keycode_Delete;
825 case GDK_Escape: return keycode_Escape;
827 case GDK_KP_Tab: return keycode_Tab;
829 case GDK_KP_Page_Up: return keycode_PageUp;
831 case GDK_KP_Page_Down: return keycode_PageDown;
833 case GDK_KP_Home: return keycode_Home;
835 case GDK_KP_End: return keycode_End;
837 case GDK_KP_F1: return keycode_Func1;
839 case GDK_KP_F2: return keycode_Func2;
841 case GDK_KP_F3: return keycode_Func3;
843 case GDK_KP_F4: return keycode_Func4;
844 case GDK_F5: return keycode_Func5;
845 case GDK_F6: return keycode_Func6;
846 case GDK_F7: return keycode_Func7;
847 case GDK_F8: return keycode_Func8;
848 case GDK_F9: return keycode_Func9;
849 case GDK_F10: return keycode_Func10;
850 case GDK_F11: return keycode_Func11;
851 case GDK_F12: return keycode_Func12;
853 keycode = gdk_keyval_to_unicode(keyval);
854 /* If keycode is 0, then keyval was not recognized; also return
855 unknown if Latin-1 input was requested and the character is not in
857 if(keycode == 0 || (!unicode && keycode > 255))
858 return keycode_Unknown;
864 force_char_input_from_queue(winid_t win, event_t *event)
866 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
867 guint keyval = GPOINTER_TO_UINT(g_async_queue_pop(glk_data->char_input_queue));
869 glk_cancel_char_event(win);
872 ChimaraGlk *glk = CHIMARA_GLK(gtk_widget_get_ancestor(win->widget, CHIMARA_TYPE_GLK));
874 g_signal_emit_by_name(glk, "char-input", win->rock, keyval);
877 event->type = evtype_CharInput;
879 event->val1 = keyval_to_glk_keycode(keyval, win->input_request_type == INPUT_REQUEST_CHARACTER_UNICODE);
884 force_line_input_from_queue(winid_t win, event_t *event)
886 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
887 const gchar *text = g_async_queue_pop(glk_data->line_input_queue);
888 glui32 chars_written = 0;
891 if(win->type == wintype_TextBuffer)
893 GtkTextBuffer *buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(win->widget) );
894 GtkTextIter start, end;
896 /* Remove signal handlers so the line input doesn't get picked up again */
897 g_signal_handler_block(buffer, win->insert_text_handler);
898 g_signal_handler_block(win->widget, win->line_input_keypress_handler);
900 /* Erase any text that was already typed */
901 GtkTextMark *input_position = gtk_text_buffer_get_mark(buffer, "input_position");
902 gtk_text_buffer_get_iter_at_mark(buffer, &start, input_position);
903 gtk_text_buffer_get_end_iter(buffer, &end);
904 gtk_text_buffer_delete(buffer, &start, &end);
906 /* Make the window uneditable again */
907 gtk_text_view_set_editable(GTK_TEXT_VIEW(win->widget), FALSE);
909 /* Insert the forced input into the window */
910 gtk_text_buffer_get_end_iter(buffer, &end);
911 gchar *text_to_insert = g_strconcat(text, "\n", NULL);
912 gtk_text_buffer_insert_with_tags_by_name(buffer, &end, text_to_insert, -1, "input", NULL);
913 chars_written = finish_text_buffer_line_input(win, TRUE);
915 else if(win->type == wintype_TextGrid)
917 /* Remove signal handlers so the line input doesn't get picked up again */
918 g_signal_handler_block(win->widget, win->char_input_keypress_handler);
920 /* Insert the forced input into the window */
921 gtk_entry_set_text(GTK_ENTRY(win->input_entry), text);
922 chars_written = finish_text_grid_line_input(win, TRUE);
926 event->type = evtype_LineInput;
928 event->val1 = chars_written;
932 /*** Internal function: cancels any pending input requests on the window and presents a warning if not INPUT_REQUEST_NONE ***/
934 cancel_old_input_request(winid_t win)
936 switch(win->input_request_type) {
937 case INPUT_REQUEST_NONE:
938 break; /* All is well */
939 case INPUT_REQUEST_CHARACTER:
940 case INPUT_REQUEST_CHARACTER_UNICODE:
941 glk_cancel_char_event(win);
942 WARNING("Cancelling pending char event");
944 case INPUT_REQUEST_LINE:
945 case INPUT_REQUEST_LINE_UNICODE:
946 glk_cancel_line_event(win, NULL);
947 WARNING("Cancelling pending line event");
950 WARNING("Could not cancel pending input request: unknown input request");