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 );
31 /* If the request is in a text buffer window, scroll to the end of the
32 text buffer. TODO: This may scroll text off the top of the window that the
33 user hasn't read yet. We need to implement a paging mechanism. */
34 if(win->type == wintype_TextBuffer)
36 GtkTextBuffer *buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(win->widget) );
38 gtk_text_buffer_get_end_iter(buffer, &iter);
39 gtk_text_buffer_place_cursor(buffer, &iter);
40 gtk_text_view_scroll_mark_onscreen(GTK_TEXT_VIEW(win->widget), gtk_text_buffer_get_insert(buffer));
41 /* Why doesn't this always work?? */
44 gtk_widget_grab_focus( GTK_WIDGET(win->widget) );
47 /* Emit the "waiting" signal to let listeners know we are ready for input */
48 g_signal_emit_by_name(glk_data->self, "waiting");
52 * glk_request_char_event:
53 * @win: A window to request char events from.
55 * Request input of a Latin-1 character or special key. A window cannot have
56 * requests for both character and line input at the same time. Nor can it have
57 * requests for character input of both types (Latin-1 and Unicode). It is
58 * illegal to call glk_request_char_event() if the window already has a pending
59 * request for either character or line input.
62 glk_request_char_event(winid_t win)
64 request_char_event_common(win, FALSE);
68 * glk_request_char_event_uni:
69 * @win: A window to request char events from.
71 * Request input of a Unicode character or special key. See
72 * glk_request_char_event().
75 glk_request_char_event_uni(winid_t win)
77 request_char_event_common(win, TRUE);
81 * glk_cancel_char_event:
82 * @win: A window to cancel the latest char event request on.
84 * This cancels a pending request for character input. (Either Latin-1 or
85 * Unicode.) For convenience, it is legal to call glk_cancel_char_event() even
86 * if there is no charcter input request on that window. Glk will ignore the
90 glk_cancel_char_event(winid_t win)
92 VALID_WINDOW(win, return);
93 g_return_if_fail(win->type != wintype_TextBuffer || win->type != wintype_TextGrid);
95 if(win->input_request_type == INPUT_REQUEST_CHARACTER || win->input_request_type == INPUT_REQUEST_CHARACTER_UNICODE)
97 win->input_request_type = INPUT_REQUEST_NONE;
98 g_signal_handler_block( win->widget, win->char_input_keypress_handler );
102 /* Internal function: Request either latin-1 or unicode line input, in a text grid window. */
104 text_grid_request_line_event_common(winid_t win, glui32 maxlen, gboolean insert, gchar *inserttext)
108 GtkTextBuffer *buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(win->widget) );
110 GtkTextMark *cursor = gtk_text_buffer_get_mark(buffer, "cursor_position");
111 GtkTextIter start_iter, end_iter;
112 gtk_text_buffer_get_iter_at_mark(buffer, &start_iter, cursor);
114 /* Determine the maximum length of the line input */
115 gint cursorpos = gtk_text_iter_get_line_offset(&start_iter);
116 /* Odd; the Glk spec says the maximum input length is
117 windowwidth - 1 - cursorposition. I say no, because if cursorposition is
118 zero, then the input should fill the whole line. FIXME??? */
119 win->input_length = MIN(win->width - cursorpos, win->line_input_buffer_max_len);
120 end_iter = start_iter;
121 gtk_text_iter_set_line_offset(&end_iter, cursorpos + win->input_length);
123 /* If the buffer currently has a selection with one bound in the middle of
124 the input field, then deselect it. Otherwise the input field gets trashed */
125 GtkTextIter start_sel, end_sel;
126 if( gtk_text_buffer_get_selection_bounds(buffer, &start_sel, &end_sel) )
128 if( gtk_text_iter_in_range(&start_sel, &start_iter, &end_iter) )
129 gtk_text_buffer_place_cursor(buffer, &end_sel);
130 if( gtk_text_iter_in_range(&end_sel, &start_iter, &end_iter) )
131 gtk_text_buffer_place_cursor(buffer, &start_sel);
134 /* Erase the text currently in the input field and replace it with a GtkEntry */
135 gtk_text_buffer_delete(buffer, &start_iter, &end_iter);
136 win->input_anchor = gtk_text_buffer_create_child_anchor(buffer, &start_iter);
137 win->input_entry = gtk_entry_new();
138 /* Set the entry's font to match that of the window */
139 GtkRcStyle *style = gtk_widget_get_modifier_style(win->widget); /* Don't free */
140 gtk_widget_modify_font(win->input_entry, style->font_desc);
141 /* Make the entry as small as possible to fit with the text */
142 gtk_entry_set_has_frame(GTK_ENTRY(win->input_entry), FALSE);
143 GtkBorder border = { 0, 0, 0, 0 };
144 gtk_entry_set_inner_border(GTK_ENTRY(win->input_entry), &border);
145 gtk_entry_set_max_length(GTK_ENTRY(win->input_entry), win->input_length);
146 gtk_entry_set_width_chars(GTK_ENTRY(win->input_entry), win->input_length);
148 /* Insert pre-entered text if needed */
150 gtk_entry_set_text(GTK_ENTRY(win->input_entry), inserttext);
152 /* Set background color of entry (TODO: implement as property) */
154 gdk_color_parse("grey", &background);
155 gtk_widget_modify_base(win->input_entry, GTK_STATE_NORMAL, &background);
157 g_signal_connect(win->input_entry, "activate", G_CALLBACK(on_input_entry_activate), win);
158 g_signal_connect(win->input_entry, "key-press-event", G_CALLBACK(on_input_entry_key_press_event), win);
159 win->line_input_entry_changed = g_signal_connect(win->input_entry, "changed", G_CALLBACK(on_input_entry_changed), win);
161 gtk_widget_show(win->input_entry);
162 gtk_text_view_add_child_at_anchor(GTK_TEXT_VIEW(win->widget), win->input_entry, win->input_anchor);
164 gtk_widget_grab_focus(win->input_entry);
169 /* Internal function: Request either latin-1 or unicode line input, in a text buffer window. */
171 text_buffer_request_line_event_common(winid_t win, glui32 maxlen, gboolean insert, gchar *inserttext)
173 flush_window_buffer(win);
177 GtkTextBuffer *buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(win->widget) );
179 /* Move the input_position mark to the end of the window_buffer */
180 GtkTextMark *input_position = gtk_text_buffer_get_mark(buffer, "input_position");
181 GtkTextIter end_iter;
182 gtk_text_buffer_get_end_iter(buffer, &end_iter);
183 gtk_text_buffer_move_mark(buffer, input_position, &end_iter);
185 /* Set the entire contents of the window_buffer as uneditable
186 * (so input can only be entered at the end) */
187 GtkTextIter start_iter;
188 gtk_text_buffer_get_start_iter(buffer, &start_iter);
189 gtk_text_buffer_remove_tag_by_name(buffer, "uneditable", &start_iter, &end_iter);
190 gtk_text_buffer_apply_tag_by_name(buffer, "uneditable", &start_iter, &end_iter);
192 /* Insert pre-entered text if needed */
194 gtk_text_buffer_insert(buffer, &end_iter, inserttext, -1);
195 gtk_text_buffer_get_end_iter(buffer, &end_iter); /* update after text insertion */
198 /* Scroll to input point */
199 gtk_text_view_scroll_mark_onscreen(GTK_TEXT_VIEW(win->widget), input_position);
201 /* Apply the correct style to the input prompt */
202 GtkTextIter input_iter;
203 gtk_text_buffer_get_iter_at_mark(buffer, &input_iter, input_position);
204 gtk_text_buffer_apply_tag_by_name(buffer, "input", &input_iter, &end_iter);
206 gtk_text_view_set_editable(GTK_TEXT_VIEW(win->widget), TRUE);
208 g_signal_handler_unblock(buffer, win->insert_text_handler);
209 gtk_widget_grab_focus(win->widget);
215 * glk_request_line_event:
216 * @win: A text buffer or text grid window to request line input on.
217 * @buf: A buffer of at least @maxlen bytes.
218 * @maxlen: Length of the buffer.
219 * @initlen: The number of characters in @buf to pre-enter.
221 * Requests input of a line of Latin-1 characters. A window cannot have requests
222 * for both character and line input at the same time. Nor can it have requests
223 * for line input of both types (Latin-1 and Unicode). It is illegal to call
224 * glk_request_line_event() if the window already has a pending request for
225 * either character or line input.
227 * The @buf argument is a pointer to space where the line input will be stored.
228 * (This may not be %NULL.) @maxlen is the length of this space, in bytes; the
229 * library will not accept more characters than this. If @initlen is nonzero,
230 * then the first @initlen bytes of @buf will be entered as pre-existing input
231 * — just as if the player had typed them himself. (The player can continue
232 * composing after this pre-entered input, or delete it or edit as usual.)
234 * The contents of the buffer are undefined until the input is completed (either
235 * by a line input event, or glk_cancel_line_event(). The library may or may not
236 * fill in the buffer as the player composes, while the input is still pending;
237 * it is illegal to change the contents of the buffer yourself.
240 glk_request_line_event(winid_t win, char *buf, glui32 maxlen, glui32 initlen)
242 VALID_WINDOW(win, return);
243 g_return_if_fail(buf);
244 g_return_if_fail(win->type != wintype_TextBuffer || win->type != wintype_TextGrid);
245 g_return_if_fail(initlen <= maxlen);
247 cancel_old_input_request(win);
249 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
251 /* Register the buffer */
252 if(glk_data->register_arr)
253 win->buffer_rock = (*glk_data->register_arr)(buf, maxlen, "&+#!Cn");
255 win->input_request_type = INPUT_REQUEST_LINE;
256 win->line_input_buffer = buf;
257 win->line_input_buffer_max_len = maxlen;
259 gchar *inserttext = (initlen > 0)? g_strndup(buf, initlen) : g_strdup("");
262 case wintype_TextBuffer:
263 text_buffer_request_line_event_common(win, maxlen, (initlen > 0), inserttext);
265 case wintype_TextGrid:
266 text_grid_request_line_event_common(win, maxlen, (initlen > 0), inserttext);
270 g_signal_handler_unblock(win->widget, win->line_input_keypress_handler);
272 /* Emit the "waiting" signal to let listeners know we are ready for input */
273 g_signal_emit_by_name(glk_data->self, "waiting");
277 * glk_request_line_event_uni:
278 * @win: A text buffer or text grid window to request line input on.
279 * @buf: A buffer of at least @maxlen characters.
280 * @maxlen: Length of the buffer.
281 * @initlen: The number of characters in @buf to pre-enter.
283 * Request input of a line of Unicode characters. This works the same as
284 * glk_request_line_event(), except the result is stored in an array of
285 * <type>glui32</type> values instead of an array of characters, and the values
286 * may be any valid Unicode code points.
288 * The result will be in Unicode Normalization Form C. This basically means that
289 * composite characters will be single characters where possible, instead of
290 * sequences of base and combining marks. See
291 * <ulink url="http://www.unicode.org/reports/tr15/">Unicode Standard Annex
292 * #15</ulink> for the details.
295 glk_request_line_event_uni(winid_t win, glui32 *buf, glui32 maxlen, glui32 initlen)
297 VALID_WINDOW(win, return);
298 g_return_if_fail(buf);
299 g_return_if_fail(win->type != wintype_TextBuffer || win->type != wintype_TextGrid);
300 g_return_if_fail(initlen <= maxlen);
302 cancel_old_input_request(win);
303 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
305 /* Register the buffer */
306 if(glk_data->register_arr)
307 win->buffer_rock = (*glk_data->register_arr)(buf, maxlen, "&+#!Iu");
309 win->input_request_type = INPUT_REQUEST_LINE_UNICODE;
310 win->line_input_buffer_unicode = buf;
311 win->line_input_buffer_max_len = maxlen;
315 utf8 = convert_ucs4_to_utf8(buf, initlen);
324 case wintype_TextBuffer:
325 text_buffer_request_line_event_common(win, maxlen, (initlen > 0), utf8);
327 case wintype_TextGrid:
328 text_grid_request_line_event_common(win, maxlen, (initlen > 0), utf8);
331 g_signal_handler_unblock(win->widget, win->line_input_keypress_handler);
334 /* Emit the "waiting" signal to let listeners know we are ready for input */
335 g_signal_emit_by_name(glk_data->self, "waiting");
339 * glk_cancel_line_event:
340 * @win: A text buffer or text grid window to cancel line input on.
341 * @event: Will be filled in if the user had already input something.
343 * This cancels a pending request for line input. (Either Latin-1 or Unicode.)
345 * The event pointed to by the event argument will be filled in as if the
346 * player had hit <keycap>enter</keycap>, and the input composed so far will be
347 * stored in the buffer; see below. If you do not care about this information,
348 * pass %NULL as the @event argument. (The buffer will still be filled.)
350 * For convenience, it is legal to call glk_cancel_line_event() even if there
351 * is no line input request on that window. The event type will be set to
352 * %evtype_None in this case.
355 glk_cancel_line_event(winid_t win, event_t *event)
357 VALID_WINDOW(win, return);
358 g_return_if_fail(win->type != wintype_TextBuffer || win->type != wintype_TextGrid);
361 event->type = evtype_None;
367 if(win->input_request_type != INPUT_REQUEST_LINE && win->input_request_type != INPUT_REQUEST_LINE_UNICODE)
370 g_signal_handler_block( win->widget, win->line_input_keypress_handler );
372 int chars_written = 0;
375 if(win->type == wintype_TextGrid) {
376 chars_written = finish_text_grid_line_input(win, FALSE);
377 } else if(win->type == wintype_TextBuffer) {
378 gtk_text_view_set_editable( GTK_TEXT_VIEW(win->widget), FALSE );
379 GtkTextBuffer *window_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(win->widget) );
380 g_signal_handler_block(window_buffer, win->insert_text_handler);
381 chars_written = finish_text_buffer_line_input(win, FALSE);
385 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
386 if(glk_data->unregister_arr)
388 if(win->input_request_type == INPUT_REQUEST_LINE_UNICODE)
389 (*glk_data->unregister_arr)(win->line_input_buffer_unicode, win->line_input_buffer_max_len, "&+#!Iu", win->buffer_rock);
391 (*glk_data->unregister_arr)(win->line_input_buffer, win->line_input_buffer_max_len, "&+#!Cn", win->buffer_rock);
394 if(event != NULL && chars_written > 0) {
395 event->type = evtype_LineInput;
396 event->val1 = chars_written;
400 /* Helper function: Turn off shutdown key-press-event signal handler */
402 turn_off_handler(GNode *node)
404 winid_t win = node->data;
405 g_signal_handler_block(win->widget, win->shutdown_keypress_handler);
406 return FALSE; /* don't stop */
409 /* Internal function: Callback for signal key-press-event while waiting for shutdown. */
411 on_shutdown_key_press_event(GtkWidget *widget, GdkEventKey *event, winid_t win)
413 ChimaraGlk *glk = CHIMARA_GLK(gtk_widget_get_ancestor(widget, CHIMARA_TYPE_GLK));
415 CHIMARA_GLK_USE_PRIVATE(glk, priv);
417 /* Turn off all the signal handlers */
418 if(priv->root_window)
419 g_node_traverse(priv->root_window, G_IN_ORDER, G_TRAVERSE_LEAVES, -1, (GNodeTraverseFunc)turn_off_handler, NULL);
421 /* Signal the Glk library that it can shut everything down now */
422 g_mutex_lock(priv->shutdown_lock);
423 g_cond_signal(priv->shutdown_key_pressed);
424 g_mutex_unlock(priv->shutdown_lock);
426 return TRUE; /* block the event */
429 /* 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. */
431 on_char_input_key_press_event(GtkWidget *widget, GdkEventKey *event, winid_t win)
433 glui32 keycode = keyval_to_glk_keycode(event->keyval, win->input_request_type == INPUT_REQUEST_CHARACTER_UNICODE);
435 ChimaraGlk *glk = CHIMARA_GLK(gtk_widget_get_ancestor(widget, CHIMARA_TYPE_GLK));
437 event_throw(glk, evtype_CharInput, win, keycode, 0);
438 g_signal_emit_by_name(glk, "char-input", win->rock, event->keyval);
440 /* Only one keypress will be handled */
441 win->input_request_type = INPUT_REQUEST_NONE;
442 g_signal_handler_block(win->widget, win->char_input_keypress_handler);
448 on_line_input_key_press_event(GtkWidget *widget, GdkEventKey *event, winid_t win)
452 case wintype_TextBuffer:
454 /* History up/down */
455 if(event->keyval == GDK_Up || event->keyval == GDK_KP_Up
456 || event->keyval == GDK_Down || event->keyval == GDK_KP_Down)
458 /* Prevent falling off the end of the history list */
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);
519 /* If this is a text grid window, then redirect the key press to the line input GtkEntry */
520 case wintype_TextGrid:
522 if(event->keyval == GDK_Up || event->keyval == GDK_KP_Up
523 || event->keyval == GDK_Down || event->keyval == GDK_KP_Down
524 || event->keyval == GDK_Left || event->keyval == GDK_KP_Left
525 || event->keyval == GDK_Right || event->keyval == GDK_KP_Right
526 || event->keyval == GDK_Tab || event->keyval == GDK_KP_Tab
527 || event->keyval == GDK_Page_Up || event->keyval == GDK_KP_Page_Up
528 || event->keyval == GDK_Page_Down || event->keyval == GDK_KP_Page_Down
529 || event->keyval == GDK_Home || event->keyval == GDK_KP_Home
530 || event->keyval == GDK_End || event->keyval == GDK_KP_End)
531 return FALSE; /* Don't redirect these keys */
532 gtk_widget_grab_focus(win->input_entry);
533 gtk_editable_set_position(GTK_EDITABLE(win->input_entry), -1);
534 gboolean retval = TRUE;
535 g_signal_emit_by_name(win->input_entry, "key-press-event", event, &retval);
536 return retval; /* Block this key event if the entry handled it */
542 /* Internal function: finish handling a line input request, for both text grid and text buffer windows. */
544 write_to_window_buffer(winid_t win, const gchar *inserted_text)
548 /* Convert the string from UTF-8 to Latin-1 or Unicode */
549 if(win->input_request_type == INPUT_REQUEST_LINE)
552 gchar *latin1 = convert_utf8_to_latin1(inserted_text, &bytes_written);
557 /* Place input in the echo stream */
558 if(win->echo_stream != NULL)
559 glk_put_string_stream(win->echo_stream, latin1);
561 /* Copy the string (bytes_written does not include the NULL at the end) */
562 copycount = MIN(win->line_input_buffer_max_len, bytes_written);
563 memcpy(win->line_input_buffer, latin1, copycount);
566 else if(win->input_request_type == INPUT_REQUEST_LINE_UNICODE)
569 gunichar *unicode = convert_utf8_to_ucs4(inserted_text, &items_written);
574 /* Place input in the echo stream */
575 if(win->echo_stream != NULL)
576 glk_put_string_stream_uni(win->echo_stream, unicode);
578 /* Copy the string (but not the NULL at the end) */
579 copycount = MIN(win->line_input_buffer_max_len, items_written);
580 memcpy(win->line_input_buffer_unicode, unicode, copycount * sizeof(gunichar));
584 WARNING("Wrong input request type");
586 win->input_request_type = INPUT_REQUEST_NONE;
590 /* Internal function: Retrieves the input of a TextBuffer window and stores it in the window buffer.
591 * Returns the number of characters written, suitable for inclusion in a line input event. */
593 finish_text_buffer_line_input(winid_t win, gboolean emit_signal)
595 VALID_WINDOW(win, return 0);
596 g_return_val_if_fail(win->type == wintype_TextBuffer, 0);
598 GtkTextIter start_iter, end_iter, last_character;
600 GtkTextBuffer *window_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(win->widget) );
601 GtkTextMark *input_position = gtk_text_buffer_get_mark(window_buffer, "input_position");
602 gtk_text_buffer_get_iter_at_mark(window_buffer, &start_iter, input_position);
603 gtk_text_buffer_get_end_iter(window_buffer, &end_iter);
604 gtk_text_buffer_get_end_iter(window_buffer, &last_character);
605 gtk_text_iter_backward_cursor_position(&last_character);
607 gchar* last_char = gtk_text_buffer_get_text(window_buffer, &last_character, &end_iter, FALSE);
609 if( strchr(last_char, '\n') != NULL )
610 gtk_text_iter_backward_cursor_position(&end_iter);
612 gchar* inserted_text = gtk_text_buffer_get_text(window_buffer, &start_iter, &end_iter, FALSE);
614 int chars_written = write_to_window_buffer(win, inserted_text);
617 ChimaraGlk *glk = CHIMARA_GLK(gtk_widget_get_ancestor(win->widget, CHIMARA_TYPE_GLK));
619 g_signal_emit_by_name(glk, "line-input", win->rock, inserted_text);
622 /* Add the text to the window input history */
623 if(win->history_pos != NULL)
625 g_free(win->history->data);
626 win->history = g_list_delete_link(win->history, win->history);
628 if(*inserted_text != 0)
629 win->history = g_list_prepend(win->history, g_strdup(inserted_text));
631 win->history_pos = NULL;
633 g_free(inserted_text);
635 return chars_written;
638 /* Internal function: Retrieves the input of a TextGrid window and stores it in the window buffer.
639 * Returns the number of characters written, suitable for inclusion in a line input event. */
641 finish_text_grid_line_input(winid_t win, gboolean emit_signal)
643 VALID_WINDOW(win, return 0);
644 g_return_val_if_fail(win->type == wintype_TextGrid, 0);
646 GtkTextBuffer *buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(win->widget) );
648 gchar *text = g_strdup( gtk_entry_get_text(GTK_ENTRY(win->input_entry)) );
649 /* Move the focus back into the text view */
650 gtk_widget_grab_focus(win->widget);
651 /* Remove entry widget from text view */
652 /* Should be ok even though this is the widget's own signal handler */
653 gtk_container_remove( GTK_CONTAINER(win->widget), GTK_WIDGET(win->input_entry) );
654 win->input_entry = NULL;
655 /* Delete the child anchor */
656 GtkTextIter start, end;
657 gtk_text_buffer_get_iter_at_child_anchor(buffer, &start, win->input_anchor);
659 gtk_text_iter_forward_char(&end); /* Point after the child anchor */
660 gtk_text_buffer_delete(buffer, &start, &end);
661 win->input_anchor = NULL;
663 gchar *spaces = g_strnfill(win->input_length - g_utf8_strlen(text, -1), ' ');
664 gchar *text_to_insert = g_strconcat(text, spaces, NULL);
666 gtk_text_buffer_insert(buffer, &start, text_to_insert, -1);
667 g_free(text_to_insert);
669 int chars_written = write_to_window_buffer(win, text);
672 ChimaraGlk *glk = CHIMARA_GLK(gtk_widget_get_ancestor(win->widget, CHIMARA_TYPE_GLK));
674 g_signal_emit_by_name(glk, "line-input", win->rock, text);
677 /* Add the text to the window input history */
678 if(win->history_pos != NULL)
680 g_free(win->history->data);
681 win->history = g_list_delete_link(win->history, win->history);
684 win->history = g_list_prepend(win->history, g_strdup(text));
685 win->history_pos = NULL;
688 return chars_written;
691 /* Internal function: Callback for signal insert-text on a text buffer window.
692 Runs after the default handler has already inserted the text.
693 FIXME: This function assumes that newline was the last character typed into the
694 window. That assumption is wrong if, for example, text containing a newline was
695 pasted into the window. */
697 after_window_insert_text(GtkTextBuffer *textbuffer, GtkTextIter *location, gchar *text, gint len, winid_t win)
699 GtkTextBuffer *window_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(win->widget) );
701 /* Set the history position to NULL and erase the text we were already editing */
702 if(win->history_pos != NULL)
704 g_free(win->history->data);
705 win->history = g_list_delete_link(win->history, win->history);
706 win->history_pos = NULL;
708 if( strchr(text, '\n') != NULL )
710 /* Remove signal handlers */
711 g_signal_handler_block(window_buffer, win->insert_text_handler);
712 g_signal_handler_block(win->widget, win->line_input_keypress_handler);
714 /* Make the window uneditable again and retrieve the text that was input */
715 gtk_text_view_set_editable(GTK_TEXT_VIEW(win->widget), FALSE);
717 int chars_written = finish_text_buffer_line_input(win, TRUE);
718 ChimaraGlk *glk = CHIMARA_GLK(gtk_widget_get_ancestor(win->widget, CHIMARA_TYPE_GLK));
719 event_throw(glk, evtype_LineInput, win, chars_written, 0);
722 /* Apply the 'input' style to the text that was entered */
723 GtkTextIter end_iter;
724 gtk_text_buffer_get_end_iter(window_buffer, &end_iter);
725 GtkTextIter input_iter;
726 GtkTextMark *input_position = gtk_text_buffer_get_mark(window_buffer, "input_position");
727 gtk_text_buffer_get_iter_at_mark(window_buffer, &input_iter, input_position);
728 gtk_text_buffer_apply_tag_by_name(window_buffer, "input", &input_iter, &end_iter);
731 /* Internal function: Callback for signal activate on the line input GtkEntry
732 in a text grid window. */
734 on_input_entry_activate(GtkEntry *input_entry, winid_t win)
736 g_signal_handler_block(win->widget, win->line_input_keypress_handler);
738 int chars_written = finish_text_grid_line_input(win, TRUE);
739 ChimaraGlk *glk = CHIMARA_GLK(gtk_widget_get_ancestor(win->widget, CHIMARA_TYPE_GLK));
740 event_throw(glk, evtype_LineInput, win, chars_written, 0);
743 /* Internal function: Callback for signal key-press-event on the line input
744 GtkEntry in a text grid window. */
746 on_input_entry_key_press_event(GtkEntry *input_entry, GdkEventKey *event, winid_t win)
748 if(event->keyval == GDK_Up || event->keyval == GDK_KP_Up
749 || event->keyval == GDK_Down || event->keyval == GDK_KP_Down)
751 /* Prevent falling off the end of the history list */
752 if( (event->keyval == GDK_Up || event->keyval == GDK_KP_Up)
753 && win->history_pos && win->history_pos->next == NULL)
755 if( (event->keyval == GDK_Down || event->keyval == GDK_KP_Down)
756 && (win->history_pos == NULL || win->history_pos->prev == NULL) )
759 if(win->history_pos == NULL)
761 const gchar *current_input = gtk_entry_get_text(input_entry);
762 win->history = g_list_prepend(win->history, g_strdup(current_input));
763 win->history_pos = win->history;
766 if(event->keyval == GDK_Up || event->keyval == GDK_KP_Up)
769 win->history_pos = g_list_next(win->history_pos);
771 win->history_pos = win->history;
774 win->history_pos = g_list_previous(win->history_pos);
776 /* Insert the history item into the window */
777 g_signal_handler_block(input_entry, win->line_input_entry_changed);
778 gtk_entry_set_text(input_entry, win->history_pos->data);
779 g_signal_handler_unblock(input_entry, win->line_input_entry_changed);
786 on_input_entry_changed(GtkEditable *editable, winid_t win)
788 /* Set the history position to NULL and erase the text we were already editing */
789 if(win->history_pos != NULL)
791 g_free(win->history->data);
792 win->history = g_list_delete_link(win->history, win->history);
793 win->history_pos = NULL;
798 keyval_to_glk_keycode(guint keyval, gboolean unicode)
803 case GDK_KP_Up: return keycode_Up;
805 case GDK_KP_Down: return keycode_Down;
807 case GDK_KP_Left: return keycode_Left;
809 case GDK_KP_Right: return keycode_Right;
812 case GDK_KP_Enter: return keycode_Return;
815 case GDK_KP_Delete: return keycode_Delete;
816 case GDK_Escape: return keycode_Escape;
818 case GDK_KP_Tab: return keycode_Tab;
820 case GDK_KP_Page_Up: return keycode_PageUp;
822 case GDK_KP_Page_Down: return keycode_PageDown;
824 case GDK_KP_Home: return keycode_Home;
826 case GDK_KP_End: return keycode_End;
828 case GDK_KP_F1: return keycode_Func1;
830 case GDK_KP_F2: return keycode_Func2;
832 case GDK_KP_F3: return keycode_Func3;
834 case GDK_KP_F4: return keycode_Func4;
835 case GDK_F5: return keycode_Func5;
836 case GDK_F6: return keycode_Func6;
837 case GDK_F7: return keycode_Func7;
838 case GDK_F8: return keycode_Func8;
839 case GDK_F9: return keycode_Func9;
840 case GDK_F10: return keycode_Func10;
841 case GDK_F11: return keycode_Func11;
842 case GDK_F12: return keycode_Func12;
844 keycode = gdk_keyval_to_unicode(keyval);
845 /* If keycode is 0, then keyval was not recognized; also return
846 unknown if Latin-1 input was requested and the character is not in
848 if(keycode == 0 || (!unicode && keycode > 255))
849 return keycode_Unknown;
855 force_char_input_from_queue(winid_t win, event_t *event)
857 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
858 guint keyval = GPOINTER_TO_UINT(g_async_queue_pop(glk_data->char_input_queue));
860 glk_cancel_char_event(win);
863 ChimaraGlk *glk = CHIMARA_GLK(gtk_widget_get_ancestor(win->widget, CHIMARA_TYPE_GLK));
865 g_signal_emit_by_name(glk, "char-input", win->rock, keyval);
868 event->type = evtype_CharInput;
870 event->val1 = keyval_to_glk_keycode(keyval, win->input_request_type == INPUT_REQUEST_CHARACTER_UNICODE);
875 force_line_input_from_queue(winid_t win, event_t *event)
877 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
878 const gchar *text = g_async_queue_pop(glk_data->line_input_queue);
879 glui32 chars_written = 0;
882 if(win->type == wintype_TextBuffer)
884 GtkTextBuffer *buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(win->widget) );
885 GtkTextIter start, end;
887 /* Remove signal handlers so the line input doesn't get picked up again */
888 g_signal_handler_block(buffer, win->insert_text_handler);
889 g_signal_handler_block(win->widget, win->line_input_keypress_handler);
891 /* Erase any text that was already typed */
892 GtkTextMark *input_position = gtk_text_buffer_get_mark(buffer, "input_position");
893 gtk_text_buffer_get_iter_at_mark(buffer, &start, input_position);
894 gtk_text_buffer_get_end_iter(buffer, &end);
895 gtk_text_buffer_delete(buffer, &start, &end);
897 /* Make the window uneditable again */
898 gtk_text_view_set_editable(GTK_TEXT_VIEW(win->widget), FALSE);
900 /* Insert the forced input into the window */
901 gtk_text_buffer_get_end_iter(buffer, &end);
902 gchar *text_to_insert = g_strconcat(text, "\n", NULL);
903 gtk_text_buffer_insert_with_tags_by_name(buffer, &end, text_to_insert, -1, "input", NULL);
904 chars_written = finish_text_buffer_line_input(win, TRUE);
906 else if(win->type == wintype_TextGrid)
908 /* Remove signal handlers so the line input doesn't get picked up again */
909 g_signal_handler_block(win->widget, win->char_input_keypress_handler);
911 /* Insert the forced input into the window */
912 gtk_entry_set_text(GTK_ENTRY(win->input_entry), text);
913 chars_written = finish_text_grid_line_input(win, TRUE);
917 event->type = evtype_LineInput;
919 event->val1 = chars_written;
923 /*** Internal function: cancels any pending input requests on the window and presents a warning if not INPUT_REQUEST_NONE ***/
925 cancel_old_input_request(winid_t win)
927 switch(win->input_request_type) {
928 case INPUT_REQUEST_NONE:
929 break; /* All is well */
930 case INPUT_REQUEST_CHARACTER:
931 case INPUT_REQUEST_CHARACTER_UNICODE:
932 glk_cancel_char_event(win);
933 WARNING("Cancelling pending char event");
935 case INPUT_REQUEST_LINE:
936 case INPUT_REQUEST_LINE_UNICODE:
937 glk_cancel_line_event(win, NULL);
938 WARNING("Cancelling pending line event");
941 WARNING("Could not cancel pending input request: unknown input request");