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);
12 /* Internal function: code common to both flavors of char event request */
14 request_char_event_common(winid_t win, gboolean unicode)
16 VALID_WINDOW(win, return);
17 g_return_if_fail(win->input_request_type == INPUT_REQUEST_NONE);
18 g_return_if_fail(win->type != wintype_TextBuffer || win->type != wintype_TextGrid);
20 flush_window_buffer(win);
22 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
24 win->input_request_type = unicode? INPUT_REQUEST_CHARACTER_UNICODE : INPUT_REQUEST_CHARACTER;
25 g_signal_handler_unblock( win->widget, win->char_input_keypress_handler );
29 /* If the request is in a text buffer window, scroll to the end of the
30 text buffer. TODO: This may scroll text off the top of the window that the
31 user hasn't read yet. We need to implement a paging mechanism. */
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->input_request_type == INPUT_REQUEST_NONE);
243 g_return_if_fail(win->type != wintype_TextBuffer || win->type != wintype_TextGrid);
244 g_return_if_fail(initlen <= maxlen);
246 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
248 /* Register the buffer */
249 if(glk_data->register_arr)
250 win->buffer_rock = (*glk_data->register_arr)(buf, maxlen, "&+#!Cn");
252 win->input_request_type = INPUT_REQUEST_LINE;
253 win->line_input_buffer = buf;
254 win->line_input_buffer_max_len = maxlen;
256 gchar *inserttext = (initlen > 0)? g_strndup(buf, initlen) : g_strdup("");
259 case wintype_TextBuffer:
260 text_buffer_request_line_event_common(win, maxlen, (initlen > 0), inserttext);
262 case wintype_TextGrid:
263 text_grid_request_line_event_common(win, maxlen, (initlen > 0), inserttext);
267 g_signal_handler_unblock(win->widget, win->line_input_keypress_handler);
269 /* Emit the "waiting" signal to let listeners know we are ready for input */
270 g_signal_emit_by_name(glk_data->self, "waiting");
274 * glk_request_line_event_uni:
275 * @win: A text buffer or text grid window to request line input on.
276 * @buf: A buffer of at least @maxlen characters.
277 * @maxlen: Length of the buffer.
278 * @initlen: The number of characters in @buf to pre-enter.
280 * Request input of a line of Unicode characters. This works the same as
281 * glk_request_line_event(), except the result is stored in an array of
282 * <type>glui32</type> values instead of an array of characters, and the values
283 * may be any valid Unicode code points.
285 * The result will be in Unicode Normalization Form C. This basically means that
286 * composite characters will be single characters where possible, instead of
287 * sequences of base and combining marks. See
288 * <ulink url="http://www.unicode.org/reports/tr15/">Unicode Standard Annex
289 * #15</ulink> for the details.
292 glk_request_line_event_uni(winid_t win, glui32 *buf, glui32 maxlen, glui32 initlen)
294 VALID_WINDOW(win, return);
295 g_return_if_fail(buf);
296 g_return_if_fail(win->input_request_type == INPUT_REQUEST_NONE);
297 g_return_if_fail(win->type != wintype_TextBuffer || win->type != wintype_TextGrid);
298 g_return_if_fail(initlen <= maxlen);
300 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
302 /* Register the buffer */
303 if(glk_data->register_arr)
304 win->buffer_rock = (*glk_data->register_arr)(buf, maxlen, "&+#!Iu");
306 win->input_request_type = INPUT_REQUEST_LINE_UNICODE;
307 win->line_input_buffer_unicode = buf;
308 win->line_input_buffer_max_len = maxlen;
312 utf8 = convert_ucs4_to_utf8(buf, initlen);
321 case wintype_TextBuffer:
322 text_buffer_request_line_event_common(win, maxlen, (initlen > 0), utf8);
324 case wintype_TextGrid:
325 text_grid_request_line_event_common(win, maxlen, (initlen > 0), utf8);
328 g_signal_handler_unblock(win->widget, win->line_input_keypress_handler);
331 /* Emit the "waiting" signal to let listeners know we are ready for input */
332 g_signal_emit_by_name(glk_data->self, "waiting");
336 * glk_cancel_line_event:
337 * @win: A text buffer or text grid window to cancel line input on.
338 * @event: Will be filled in if the user had already input something.
340 * This cancels a pending request for line input. (Either Latin-1 or Unicode.)
342 * The event pointed to by the event argument will be filled in as if the
343 * player had hit <keycap>enter</keycap>, and the input composed so far will be
344 * stored in the buffer; see below. If you do not care about this information,
345 * pass %NULL as the @event argument. (The buffer will still be filled.)
347 * For convenience, it is legal to call glk_cancel_line_event() even if there
348 * is no line input request on that window. The event type will be set to
349 * %evtype_None in this case.
352 glk_cancel_line_event(winid_t win, event_t *event)
354 VALID_WINDOW(win, return);
355 g_return_if_fail(win->type != wintype_TextBuffer || win->type != wintype_TextGrid);
358 event->type = evtype_None;
364 if(win->input_request_type != INPUT_REQUEST_LINE && win->input_request_type != INPUT_REQUEST_LINE_UNICODE)
367 g_signal_handler_block( win->widget, win->line_input_keypress_handler );
369 int chars_written = 0;
372 if(win->type == wintype_TextGrid) {
373 chars_written = finish_text_grid_line_input(win, FALSE);
374 } else if(win->type == wintype_TextBuffer) {
375 gtk_text_view_set_editable( GTK_TEXT_VIEW(win->widget), FALSE );
376 GtkTextBuffer *window_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(win->widget) );
377 g_signal_handler_block(window_buffer, win->insert_text_handler);
378 chars_written = finish_text_buffer_line_input(win, FALSE);
382 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
383 if(glk_data->unregister_arr)
385 if(win->input_request_type == INPUT_REQUEST_LINE_UNICODE)
386 (*glk_data->unregister_arr)(win->line_input_buffer_unicode, win->line_input_buffer_max_len, "&+#!Iu", win->buffer_rock);
388 (*glk_data->unregister_arr)(win->line_input_buffer, win->line_input_buffer_max_len, "&+#!Cn", win->buffer_rock);
391 if(event != NULL && chars_written > 0) {
392 event->type = evtype_LineInput;
393 event->val1 = chars_written;
397 /* Helper function: Turn off shutdown key-press-event signal handler */
399 turn_off_handler(GNode *node)
401 winid_t win = node->data;
402 g_signal_handler_block(win->widget, win->shutdown_keypress_handler);
403 return FALSE; /* don't stop */
406 /* Internal function: Callback for signal key-press-event while waiting for shutdown. */
408 on_shutdown_key_press_event(GtkWidget *widget, GdkEventKey *event, winid_t win)
410 ChimaraGlk *glk = CHIMARA_GLK(gtk_widget_get_ancestor(widget, CHIMARA_TYPE_GLK));
412 CHIMARA_GLK_USE_PRIVATE(glk, priv);
414 /* Turn off all the signal handlers */
415 if(priv->root_window)
416 g_node_traverse(priv->root_window, G_IN_ORDER, G_TRAVERSE_LEAVES, -1, (GNodeTraverseFunc)turn_off_handler, NULL);
418 /* Signal the Glk library that it can shut everything down now */
419 g_mutex_lock(priv->shutdown_lock);
420 g_cond_signal(priv->shutdown_key_pressed);
421 g_mutex_unlock(priv->shutdown_lock);
423 return TRUE; /* block the event */
426 /* 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. */
428 on_char_input_key_press_event(GtkWidget *widget, GdkEventKey *event, winid_t win)
430 glui32 keycode = keyval_to_glk_keycode(event->keyval, win->input_request_type == INPUT_REQUEST_CHARACTER_UNICODE);
432 ChimaraGlk *glk = CHIMARA_GLK(gtk_widget_get_ancestor(widget, CHIMARA_TYPE_GLK));
434 event_throw(glk, evtype_CharInput, win, keycode, 0);
435 g_signal_emit_by_name(glk, "char-input", win->rock, event->keyval);
437 /* Only one keypress will be handled */
438 win->input_request_type = INPUT_REQUEST_NONE;
439 g_signal_handler_block(win->widget, win->char_input_keypress_handler);
445 on_line_input_key_press_event(GtkWidget *widget, GdkEventKey *event, winid_t win)
449 case wintype_TextBuffer:
450 if(event->keyval == GDK_Up || event->keyval == GDK_KP_Up
451 || event->keyval == GDK_Down || event->keyval == GDK_KP_Down)
453 /* Prevent falling off the end of the history list */
454 if( (event->keyval == GDK_Up || event->keyval == GDK_KP_Up)
455 && win->history_pos && win->history_pos->next == NULL)
457 if( (event->keyval == GDK_Down || event->keyval == GDK_KP_Down)
458 && (win->history_pos == NULL || win->history_pos->prev == NULL) )
461 GtkTextBuffer *buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(win->widget));
462 GtkTextIter start, end;
463 /* Erase any text that was already typed */
464 GtkTextMark *input_position = gtk_text_buffer_get_mark(buffer, "input_position");
465 gtk_text_buffer_get_iter_at_mark(buffer, &start, input_position);
466 gtk_text_buffer_get_end_iter(buffer, &end);
468 if(win->history_pos == NULL) {
469 gchar *current_input = gtk_text_buffer_get_text(buffer, &start, &end, FALSE);
470 win->history = g_list_prepend(win->history, current_input);
471 win->history_pos = win->history;
474 gtk_text_buffer_delete(buffer, &start, &end);
476 if(event->keyval == GDK_Up || event->keyval == GDK_KP_Up)
479 win->history_pos = g_list_next(win->history_pos);
481 win->history_pos = win->history;
484 win->history_pos = g_list_previous(win->history_pos);
486 /* Insert the history item into the window */
487 gtk_text_buffer_get_end_iter(buffer, &end);
489 g_signal_handler_block(buffer, win->insert_text_handler);
490 gtk_text_buffer_insert_with_tags_by_name(buffer, &end, win->history_pos->data, -1, "input", NULL);
491 g_signal_handler_unblock(buffer, win->insert_text_handler);
496 /* If this is a text grid window, then redirect the key press to the line input GtkEntry */
497 case wintype_TextGrid:
499 if(event->keyval == GDK_Up || event->keyval == GDK_KP_Up
500 || event->keyval == GDK_Down || event->keyval == GDK_KP_Down
501 || event->keyval == GDK_Left || event->keyval == GDK_KP_Left
502 || event->keyval == GDK_Right || event->keyval == GDK_KP_Right
503 || event->keyval == GDK_Tab || event->keyval == GDK_KP_Tab
504 || event->keyval == GDK_Page_Up || event->keyval == GDK_KP_Page_Up
505 || event->keyval == GDK_Page_Down || event->keyval == GDK_KP_Page_Down
506 || event->keyval == GDK_Home || event->keyval == GDK_KP_Home
507 || event->keyval == GDK_End || event->keyval == GDK_KP_End)
508 return FALSE; /* Don't redirect these keys */
509 gtk_widget_grab_focus(win->input_entry);
510 gtk_editable_set_position(GTK_EDITABLE(win->input_entry), -1);
511 gboolean retval = TRUE;
512 g_signal_emit_by_name(win->input_entry, "key-press-event", event, &retval);
513 return retval; /* Block this key event if the entry handled it */
519 /* Internal function: finish handling a line input request, for both text grid and text buffer windows. */
521 write_to_window_buffer(winid_t win, const gchar *inserted_text)
525 /* Convert the string from UTF-8 to Latin-1 or Unicode */
526 if(win->input_request_type == INPUT_REQUEST_LINE)
529 gchar *latin1 = convert_utf8_to_latin1(inserted_text, &bytes_written);
534 /* Place input in the echo stream */
535 if(win->echo_stream != NULL)
536 glk_put_string_stream(win->echo_stream, latin1);
538 /* Copy the string (bytes_written does not include the NULL at the end) */
539 copycount = MIN(win->line_input_buffer_max_len, bytes_written);
540 memcpy(win->line_input_buffer, latin1, copycount);
543 else if(win->input_request_type == INPUT_REQUEST_LINE_UNICODE)
546 gunichar *unicode = convert_utf8_to_ucs4(inserted_text, &items_written);
551 /* Place input in the echo stream */
552 if(win->echo_stream != NULL)
553 glk_put_string_stream_uni(win->echo_stream, unicode);
555 /* Copy the string (but not the NULL at the end) */
556 copycount = MIN(win->line_input_buffer_max_len, items_written);
557 memcpy(win->line_input_buffer_unicode, unicode, copycount * sizeof(gunichar));
561 WARNING("Wrong input request type");
563 win->input_request_type = INPUT_REQUEST_NONE;
567 /* Internal function: Retrieves the input of a TextBuffer window and stores it in the window buffer.
568 * Returns the number of characters written, suitable for inclusion in a line input event. */
570 finish_text_buffer_line_input(winid_t win, gboolean emit_signal)
572 VALID_WINDOW(win, return 0);
573 g_return_val_if_fail(win->type == wintype_TextBuffer, 0);
575 GtkTextIter start_iter, end_iter, last_character;
577 GtkTextBuffer *window_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(win->widget) );
578 GtkTextMark *input_position = gtk_text_buffer_get_mark(window_buffer, "input_position");
579 gtk_text_buffer_get_iter_at_mark(window_buffer, &start_iter, input_position);
580 gtk_text_buffer_get_end_iter(window_buffer, &end_iter);
581 gtk_text_buffer_get_end_iter(window_buffer, &last_character);
582 gtk_text_iter_backward_cursor_position(&last_character);
584 gchar* last_char = gtk_text_buffer_get_text(window_buffer, &last_character, &end_iter, FALSE);
586 if( strchr(last_char, '\n') != NULL )
587 gtk_text_iter_backward_cursor_position(&end_iter);
589 gchar* inserted_text = gtk_text_buffer_get_text(window_buffer, &start_iter, &end_iter, FALSE);
591 int chars_written = write_to_window_buffer(win, inserted_text);
594 ChimaraGlk *glk = CHIMARA_GLK(gtk_widget_get_ancestor(win->widget, CHIMARA_TYPE_GLK));
596 g_signal_emit_by_name(glk, "line-input", win->rock, inserted_text);
599 /* Add the text to the window input history */
600 if(win->history_pos != NULL)
602 g_free(win->history->data);
603 win->history = g_list_delete_link(win->history, win->history);
605 if(*inserted_text != 0)
606 win->history = g_list_prepend(win->history, g_strdup(inserted_text));
608 win->history_pos = NULL;
610 g_free(inserted_text);
612 return chars_written;
615 /* Internal function: Retrieves the input of a TextGrid window and stores it in the window buffer.
616 * Returns the number of characters written, suitable for inclusion in a line input event. */
618 finish_text_grid_line_input(winid_t win, gboolean emit_signal)
620 VALID_WINDOW(win, return 0);
621 g_return_val_if_fail(win->type == wintype_TextGrid, 0);
623 GtkTextBuffer *buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(win->widget) );
625 gchar *text = g_strdup( gtk_entry_get_text(GTK_ENTRY(win->input_entry)) );
626 /* Move the focus back into the text view */
627 gtk_widget_grab_focus(win->widget);
628 /* Remove entry widget from text view */
629 /* Should be ok even though this is the widget's own signal handler */
630 gtk_container_remove( GTK_CONTAINER(win->widget), GTK_WIDGET(win->input_entry) );
631 win->input_entry = NULL;
632 /* Delete the child anchor */
633 GtkTextIter start, end;
634 gtk_text_buffer_get_iter_at_child_anchor(buffer, &start, win->input_anchor);
636 gtk_text_iter_forward_char(&end); /* Point after the child anchor */
637 gtk_text_buffer_delete(buffer, &start, &end);
638 win->input_anchor = NULL;
640 gchar *spaces = g_strnfill(win->input_length - g_utf8_strlen(text, -1), ' ');
641 gchar *text_to_insert = g_strconcat(text, spaces, NULL);
643 gtk_text_buffer_insert(buffer, &start, text_to_insert, -1);
644 g_free(text_to_insert);
646 int chars_written = write_to_window_buffer(win, text);
649 ChimaraGlk *glk = CHIMARA_GLK(gtk_widget_get_ancestor(win->widget, CHIMARA_TYPE_GLK));
651 g_signal_emit_by_name(glk, "line-input", win->rock, text);
654 /* Add the text to the window input history */
655 if(win->history_pos != NULL)
657 g_free(win->history->data);
658 win->history = g_list_delete_link(win->history, win->history);
661 win->history = g_list_prepend(win->history, g_strdup(text));
662 win->history_pos = NULL;
665 return chars_written;
668 /* Internal function: Callback for signal insert-text on a text buffer window.
669 Runs after the default handler has already inserted the text.
670 FIXME: This function assumes that newline was the last character typed into the
671 window. That assumption is wrong if, for example, text containing a newline was
672 pasted into the window. */
674 after_window_insert_text(GtkTextBuffer *textbuffer, GtkTextIter *location, gchar *text, gint len, winid_t win)
676 GtkTextBuffer *window_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(win->widget) );
678 /* Set the history position to NULL and erase the text we were already editing */
679 if(win->history_pos != NULL)
681 g_free(win->history->data);
682 win->history = g_list_delete_link(win->history, win->history);
683 win->history_pos = NULL;
685 if( strchr(text, '\n') != NULL )
687 /* Remove signal handlers */
688 g_signal_handler_block(window_buffer, win->insert_text_handler);
689 g_signal_handler_block(win->widget, win->line_input_keypress_handler);
691 /* Make the window uneditable again and retrieve the text that was input */
692 gtk_text_view_set_editable(GTK_TEXT_VIEW(win->widget), FALSE);
694 int chars_written = finish_text_buffer_line_input(win, TRUE);
695 ChimaraGlk *glk = CHIMARA_GLK(gtk_widget_get_ancestor(win->widget, CHIMARA_TYPE_GLK));
696 event_throw(glk, evtype_LineInput, win, chars_written, 0);
699 /* Apply the 'input' style to the text that was entered */
700 GtkTextIter end_iter;
701 gtk_text_buffer_get_end_iter(window_buffer, &end_iter);
702 GtkTextIter input_iter;
703 GtkTextMark *input_position = gtk_text_buffer_get_mark(window_buffer, "input_position");
704 gtk_text_buffer_get_iter_at_mark(window_buffer, &input_iter, input_position);
705 gtk_text_buffer_apply_tag_by_name(window_buffer, "input", &input_iter, &end_iter);
708 /* Internal function: Callback for signal activate on the line input GtkEntry
709 in a text grid window. */
711 on_input_entry_activate(GtkEntry *input_entry, winid_t win)
713 g_signal_handler_block(win->widget, win->line_input_keypress_handler);
715 int chars_written = finish_text_grid_line_input(win, TRUE);
716 ChimaraGlk *glk = CHIMARA_GLK(gtk_widget_get_ancestor(win->widget, CHIMARA_TYPE_GLK));
717 event_throw(glk, evtype_LineInput, win, chars_written, 0);
720 /* Internal function: Callback for signal key-press-event on the line input
721 GtkEntry in a text grid window. */
723 on_input_entry_key_press_event(GtkEntry *input_entry, GdkEventKey *event, winid_t win)
725 if(event->keyval == GDK_Up || event->keyval == GDK_KP_Up
726 || event->keyval == GDK_Down || event->keyval == GDK_KP_Down)
728 /* Prevent falling off the end of the history list */
729 if( (event->keyval == GDK_Up || event->keyval == GDK_KP_Up)
730 && win->history_pos && win->history_pos->next == NULL)
732 if( (event->keyval == GDK_Down || event->keyval == GDK_KP_Down)
733 && (win->history_pos == NULL || win->history_pos->prev == NULL) )
736 if(win->history_pos == NULL)
738 const gchar *current_input = gtk_entry_get_text(input_entry);
739 win->history = g_list_prepend(win->history, g_strdup(current_input));
740 win->history_pos = win->history;
743 if(event->keyval == GDK_Up || event->keyval == GDK_KP_Up)
746 win->history_pos = g_list_next(win->history_pos);
748 win->history_pos = win->history;
751 win->history_pos = g_list_previous(win->history_pos);
753 /* Insert the history item into the window */
754 g_signal_handler_block(input_entry, win->line_input_entry_changed);
755 gtk_entry_set_text(input_entry, win->history_pos->data);
756 g_signal_handler_unblock(input_entry, win->line_input_entry_changed);
763 on_input_entry_changed(GtkEditable *editable, winid_t win)
765 /* Set the history position to NULL and erase the text we were already editing */
766 if(win->history_pos != NULL)
768 g_free(win->history->data);
769 win->history = g_list_delete_link(win->history, win->history);
770 win->history_pos = NULL;
775 keyval_to_glk_keycode(guint keyval, gboolean unicode)
780 case GDK_KP_Up: return keycode_Up;
782 case GDK_KP_Down: return keycode_Down;
784 case GDK_KP_Left: return keycode_Left;
786 case GDK_KP_Right: return keycode_Right;
789 case GDK_KP_Enter: return keycode_Return;
792 case GDK_KP_Delete: return keycode_Delete;
793 case GDK_Escape: return keycode_Escape;
795 case GDK_KP_Tab: return keycode_Tab;
797 case GDK_KP_Page_Up: return keycode_PageUp;
799 case GDK_KP_Page_Down: return keycode_PageDown;
801 case GDK_KP_Home: return keycode_Home;
803 case GDK_KP_End: return keycode_End;
805 case GDK_KP_F1: return keycode_Func1;
807 case GDK_KP_F2: return keycode_Func2;
809 case GDK_KP_F3: return keycode_Func3;
811 case GDK_KP_F4: return keycode_Func4;
812 case GDK_F5: return keycode_Func5;
813 case GDK_F6: return keycode_Func6;
814 case GDK_F7: return keycode_Func7;
815 case GDK_F8: return keycode_Func8;
816 case GDK_F9: return keycode_Func9;
817 case GDK_F10: return keycode_Func10;
818 case GDK_F11: return keycode_Func11;
819 case GDK_F12: return keycode_Func12;
821 keycode = gdk_keyval_to_unicode(keyval);
822 /* If keycode is 0, then keyval was not recognized; also return
823 unknown if Latin-1 input was requested and the character is not in
825 if(keycode == 0 || (!unicode && keycode > 255))
826 return keycode_Unknown;
832 force_char_input_from_queue(winid_t win, event_t *event)
834 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
835 guint keyval = GPOINTER_TO_UINT(g_async_queue_pop(glk_data->char_input_queue));
837 glk_cancel_char_event(win);
840 ChimaraGlk *glk = CHIMARA_GLK(gtk_widget_get_ancestor(win->widget, CHIMARA_TYPE_GLK));
842 g_signal_emit_by_name(glk, "char-input", win->rock, keyval);
845 event->type = evtype_CharInput;
847 event->val1 = keyval_to_glk_keycode(keyval, win->input_request_type == INPUT_REQUEST_CHARACTER_UNICODE);
852 force_line_input_from_queue(winid_t win, event_t *event)
854 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
855 const gchar *text = g_async_queue_pop(glk_data->line_input_queue);
856 glui32 chars_written = 0;
859 if(win->type == wintype_TextBuffer)
861 GtkTextBuffer *buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(win->widget) );
862 GtkTextIter start, end;
864 /* Remove signal handlers so the line input doesn't get picked up again */
865 g_signal_handler_block(buffer, win->insert_text_handler);
866 g_signal_handler_block(win->widget, win->line_input_keypress_handler);
868 /* Erase any text that was already typed */
869 GtkTextMark *input_position = gtk_text_buffer_get_mark(buffer, "input_position");
870 gtk_text_buffer_get_iter_at_mark(buffer, &start, input_position);
871 gtk_text_buffer_get_end_iter(buffer, &end);
872 gtk_text_buffer_delete(buffer, &start, &end);
874 /* Make the window uneditable again */
875 gtk_text_view_set_editable(GTK_TEXT_VIEW(win->widget), FALSE);
877 /* Insert the forced input into the window */
878 gtk_text_buffer_get_end_iter(buffer, &end);
879 gchar *text_to_insert = g_strconcat(text, "\n", NULL);
880 gtk_text_buffer_insert_with_tags_by_name(buffer, &end, text_to_insert, -1, "input", NULL);
881 chars_written = finish_text_buffer_line_input(win, TRUE);
883 else if(win->type == wintype_TextGrid)
885 /* Remove signal handlers so the line input doesn't get picked up again */
886 g_signal_handler_block(win->widget, win->char_input_keypress_handler);
888 /* Insert the forced input into the window */
889 gtk_entry_set_text(GTK_ENTRY(win->input_entry), text);
890 chars_written = finish_text_grid_line_input(win, TRUE);
894 event->type = evtype_LineInput;
896 event->val1 = chars_written;