1 /* licensing and copyright information here */
11 #include <glib/gi18n-lib.h>
13 #include <pango/pango.h>
15 #include "chimara-glk.h"
16 #include "chimara-glk-private.h"
17 #include "chimara-marshallers.h"
28 #define CHIMARA_GLK_MIN_WIDTH 0
29 #define CHIMARA_GLK_MIN_HEIGHT 0
33 * @short_description: Widget which executes a Glk program
34 * @stability: Unstable
36 * The #ChimaraGlk widget opens and runs a Glk program. The program must be
37 * compiled as a plugin module, with a function <function>glk_main()</function>
38 * that the Glk library can hook into.
40 * On Linux systems, this is a file with a name like
41 * <filename>plugin.so</filename>. For portability, you can use libtool and
44 * pkglib_LTLIBRARIES = plugin.la
45 * plugin_la_SOURCES = plugin.c foo.c bar.c
46 * plugin_la_LDFLAGS = -module -shared -avoid-version -export-symbols-regex "^glk_main$$"
48 * This will produce <filename>plugin.la</filename> which is a text file
49 * containing the correct plugin file to open (see the relevant section of the
51 * url="http://www.gnu.org/software/libtool/manual/html_node/Finding-the-dlname.html">
52 * Libtool manual</ulink>).
54 * You need to initialize multithreading in any program you use a #ChimaraGlk
55 * widget in. This means including the following incantation at the beginning
58 * if(!g_thread_supported())
59 * g_thread_init(NULL);
62 * This initialization must take place <emphasis>before</emphasis> the call to
63 * gtk_init(). In addition to this, you must also protect your call to
64 * gtk_main() by calling gdk_threads_enter() right before it, and
65 * gdk_threads_leave() right after it.
67 * The following sample program shows how to initialize and construct a simple
68 * GTK window that runs a Glk program:
71 * #include <gtk/gtk.h>
72 * #include <libchimara/chimara-glk.h>
75 * main(int argc, char *argv[])
77 * GtkWidget *window, *glk;
78 * GError *error = NULL;
79 * gchar *plugin_argv[] = { "plugin.so", "-option" };
81 * /<!---->* Initialize threads and GTK *<!---->/
82 * if(!g_thread_supported())
83 * g_thread_init(NULL);
85 * gtk_init(&argc, &argv);
87 * /<!---->* Construct the window and its contents. We quit the GTK main loop
88 * * when the window's close button is clicked. *<!---->/
89 * window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
90 * g_signal_connect(window, "delete-event", G_CALLBACK(gtk_main_quit), NULL);
91 * glk = chimara_glk_new();
92 * gtk_container_add(GTK_CONTAINER(window), glk);
93 * gtk_widget_show_all(window);
95 * /<!---->* Add a reference to the ChimaraGlk widget, since we want it to
96 * * persist after the window's delete-event -- otherwise it will be destroyed
97 * * with the window. *<!---->/
100 * /<!---->* Start the Glk program in a separate thread *<!---->/
101 * if(!chimara_glk_run(CHIMARA_GLK(glk), "./plugin.so", 2, plugin_argv, &error))
102 * g_error("Error starting Glk library: %s\n", error->message);
104 * /<!---->* Start the GTK main loop *<!---->/
105 * gdk_threads_enter();
107 * gdk_threads_leave();
109 * /<!---->* After the GTK main loop exits, signal the Glk program to shut down if
110 * * it is still running, and wait for it to exit. *<!---->/
111 * chimara_glk_stop(CHIMARA_GLK(glk));
112 * chimara_glk_wait(CHIMARA_GLK(glk));
113 * g_object_unref(glk);
120 typedef void (* glk_main_t) (void);
121 typedef int (* glkunix_startup_code_t) (glkunix_startup_t*);
145 static guint chimara_glk_signals[LAST_SIGNAL] = { 0 };
147 G_DEFINE_TYPE(ChimaraGlk, chimara_glk, GTK_TYPE_CONTAINER);
150 chimara_glk_init(ChimaraGlk *self)
152 GTK_WIDGET_SET_FLAGS(GTK_WIDGET(self), GTK_NO_WINDOW);
154 ChimaraGlkPrivate *priv = CHIMARA_GLK_PRIVATE(self);
157 priv->interactive = TRUE;
158 priv->protect = FALSE;
159 priv->styles = g_new0(StyleSet,1);
160 priv->glk_styles = g_new0(StyleSet,1);
161 priv->pager_attr_list = pango_attr_list_new();
162 priv->final_message = g_strdup("[ The game has finished ]");
163 priv->running = FALSE;
164 priv->program = NULL;
166 priv->event_queue = g_queue_new();
167 priv->event_lock = g_mutex_new();
168 priv->event_queue_not_empty = g_cond_new();
169 priv->event_queue_not_full = g_cond_new();
170 priv->abort_lock = g_mutex_new();
171 priv->abort_signalled = FALSE;
172 priv->shutdown_lock = g_mutex_new();
173 priv->shutdown_key_pressed = g_cond_new();
174 priv->arrange_lock = g_mutex_new();
175 priv->rearranged = g_cond_new();
176 priv->needs_rearrange = FALSE;
177 priv->ignore_next_arrange_event = FALSE;
178 priv->char_input_queue = g_async_queue_new();
179 priv->line_input_queue = g_async_queue_new();
180 /* Should be g_async_queue_new_full(g_free); but only in GTK >= 2.16 */
181 priv->resource_map = NULL;
182 priv->resource_lock = g_mutex_new();
183 priv->resource_loaded = g_cond_new();
184 priv->resource_info_available = g_cond_new();
185 priv->resource_load_callback = NULL;
186 priv->resource_load_callback_data = NULL;
187 priv->image_cache = NULL;
188 priv->program_name = NULL;
189 priv->program_info = NULL;
190 priv->story_name = NULL;
191 priv->interrupt_handler = NULL;
192 priv->root_window = NULL;
193 priv->fileref_list = NULL;
194 priv->current_stream = NULL;
195 priv->stream_list = NULL;
197 priv->in_startup = FALSE;
198 priv->current_dir = NULL;
204 chimara_glk_set_property(GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
206 ChimaraGlk *glk = CHIMARA_GLK(object);
210 case PROP_INTERACTIVE:
211 chimara_glk_set_interactive( glk, g_value_get_boolean(value) );
214 chimara_glk_set_protect( glk, g_value_get_boolean(value) );
217 chimara_glk_set_spacing( glk, g_value_get_uint(value) );
220 G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
225 chimara_glk_get_property(GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
227 ChimaraGlkPrivate *priv = CHIMARA_GLK_PRIVATE(object);
231 case PROP_INTERACTIVE:
232 g_value_set_boolean(value, priv->interactive);
235 g_value_set_boolean(value, priv->protect);
238 g_value_set_uint(value, priv->spacing);
240 case PROP_PROGRAM_NAME:
241 g_value_set_string(value, priv->program_name);
243 case PROP_PROGRAM_INFO:
244 g_value_set_string(value, priv->program_info);
246 case PROP_STORY_NAME:
247 g_value_set_string(value, priv->story_name);
250 G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
255 chimara_glk_finalize(GObject *object)
257 ChimaraGlk *self = CHIMARA_GLK(object);
258 CHIMARA_GLK_USE_PRIVATE(self, priv);
260 /* Free widget properties */
261 g_free(priv->final_message);
263 g_hash_table_destroy(priv->styles->text_buffer);
264 g_hash_table_destroy(priv->styles->text_grid);
265 g_hash_table_destroy(priv->glk_styles->text_buffer);
266 g_hash_table_destroy(priv->glk_styles->text_grid);
267 pango_attr_list_unref(priv->pager_attr_list);
269 /* Free the event queue */
270 g_mutex_lock(priv->event_lock);
271 g_queue_foreach(priv->event_queue, (GFunc)g_free, NULL);
272 g_queue_free(priv->event_queue);
273 g_cond_free(priv->event_queue_not_empty);
274 g_cond_free(priv->event_queue_not_full);
275 priv->event_queue = NULL;
276 g_mutex_unlock(priv->event_lock);
277 g_mutex_free(priv->event_lock);
278 /* Free the abort signaling mechanism */
279 g_mutex_lock(priv->abort_lock);
280 /* Make sure no other thread is busy with this */
281 g_mutex_unlock(priv->abort_lock);
282 g_mutex_free(priv->abort_lock);
283 priv->abort_lock = NULL;
284 /* Free the shutdown keypress signaling mechanism */
285 g_mutex_lock(priv->shutdown_lock);
286 g_cond_free(priv->shutdown_key_pressed);
287 g_mutex_unlock(priv->shutdown_lock);
288 priv->shutdown_lock = NULL;
289 /* Free the window arrangement signaling */
290 g_mutex_lock(priv->arrange_lock);
291 g_cond_free(priv->rearranged);
292 g_mutex_unlock(priv->arrange_lock);
293 g_mutex_free(priv->arrange_lock);
294 priv->arrange_lock = NULL;
295 g_mutex_lock(priv->resource_lock);
296 g_cond_free(priv->resource_loaded);
297 g_cond_free(priv->resource_info_available);
298 g_mutex_unlock(priv->resource_lock);
299 g_mutex_free(priv->resource_lock);
300 g_slist_foreach(priv->image_cache, (GFunc)clear_image_cache, NULL);
301 g_slist_free(priv->image_cache);
302 /* Unref input queues (this should destroy them since any Glk thread has stopped by now */
303 g_async_queue_unref(priv->char_input_queue);
304 g_async_queue_unref(priv->line_input_queue);
306 /* Free other stuff */
307 g_free(priv->current_dir);
308 g_free(priv->program_name);
309 g_free(priv->program_info);
310 g_free(priv->story_name);
311 g_free(priv->styles);
312 g_free(priv->glk_styles);
314 /* Chain up to parent */
315 G_OBJECT_CLASS(chimara_glk_parent_class)->finalize(object);
318 /* Internal function: Recursively get the Glk window tree's size request */
320 request_recurse(winid_t win, GtkRequisition *requisition, guint spacing)
322 if(win->type == wintype_Pair)
324 /* Get children's size requests */
325 GtkRequisition child1, child2;
326 request_recurse(win->window_node->children->data, &child1, spacing);
327 request_recurse(win->window_node->children->next->data, &child2, spacing);
329 glui32 division = win->split_method & winmethod_DivisionMask;
330 glui32 direction = win->split_method & winmethod_DirMask;
332 /* If the split is fixed, get the size of the fixed child */
333 if(division == winmethod_Fixed)
338 child1.width = win->key_window?
339 win->constraint_size * win->key_window->unit_width
342 case winmethod_Right:
343 child2.width = win->key_window?
344 win->constraint_size * win->key_window->unit_width
347 case winmethod_Above:
348 child1.height = win->key_window?
349 win->constraint_size * win->key_window->unit_height
352 case winmethod_Below:
353 child2.height = win->key_window?
354 win->constraint_size * win->key_window->unit_height
360 /* Add the children's requests */
364 case winmethod_Right:
365 requisition->width = child1.width + child2.width + spacing;
366 requisition->height = MAX(child1.height, child2.height);
368 case winmethod_Above:
369 case winmethod_Below:
370 requisition->width = MAX(child1.width, child2.width);
371 requisition->height = child1.height + child2.height + spacing;
376 /* For non-pair windows, just use the size that GTK requests */
378 gtk_widget_size_request(win->frame, requisition);
381 /* Overrides gtk_widget_size_request */
383 chimara_glk_size_request(GtkWidget *widget, GtkRequisition *requisition)
385 g_return_if_fail(widget);
386 g_return_if_fail(requisition);
387 g_return_if_fail(CHIMARA_IS_GLK(widget));
389 ChimaraGlkPrivate *priv = CHIMARA_GLK_PRIVATE(widget);
391 /* For now, just pass the size request on to the root Glk window */
392 if(priv->root_window)
394 request_recurse(priv->root_window->data, requisition, priv->spacing);
395 requisition->width += 2 * GTK_CONTAINER(widget)->border_width;
396 requisition->height += 2 * GTK_CONTAINER(widget)->border_width;
400 requisition->width = CHIMARA_GLK_MIN_WIDTH + 2 * GTK_CONTAINER(widget)->border_width;
401 requisition->height = CHIMARA_GLK_MIN_HEIGHT + 2 * GTK_CONTAINER(widget)->border_width;
405 /* Recursively give the Glk windows their allocated space. Returns a window
406 containing all children of this window that must be redrawn, or NULL if there
407 are no children that require redrawing. */
409 allocate_recurse(winid_t win, GtkAllocation *allocation, guint spacing)
411 if(win->type == wintype_Pair)
413 glui32 division = win->split_method & winmethod_DivisionMask;
414 glui32 direction = win->split_method & winmethod_DirMask;
416 /* If the space gets too small to honor the spacing property, then just
417 ignore spacing in this window and below. */
418 if( (spacing > allocation->width && (direction == winmethod_Left || direction == winmethod_Right))
419 || (spacing > allocation->height && (direction == winmethod_Above || direction == winmethod_Below)) )
422 GtkAllocation child1, child2;
423 child1.x = allocation->x;
424 child1.y = allocation->y;
426 if(division == winmethod_Fixed)
428 /* If the key window has been closed, then default to 0; otherwise
429 use the key window to determine the size */
433 child1.width = win->key_window?
434 CLAMP(win->constraint_size * win->key_window->unit_width, 0, allocation->width - spacing)
437 case winmethod_Right:
438 child2.width = win->key_window?
439 CLAMP(win->constraint_size * win->key_window->unit_width, 0, allocation->width - spacing)
442 case winmethod_Above:
443 child1.height = win->key_window?
444 CLAMP(win->constraint_size * win->key_window->unit_height, 0, allocation->height - spacing)
447 case winmethod_Below:
448 child2.height = win->key_window?
449 CLAMP(win->constraint_size * win->key_window->unit_height, 0, allocation->height - spacing)
454 else /* proportional */
456 gdouble fraction = win->constraint_size / 100.0;
460 child1.width = MAX(0, (gint)ceil(fraction * (allocation->width - spacing)) );
462 case winmethod_Right:
463 child2.width = MAX(0, (gint)ceil(fraction * (allocation->width - spacing)) );
465 case winmethod_Above:
466 child1.height = MAX(0, (gint)ceil(fraction * (allocation->height - spacing)) );
468 case winmethod_Below:
469 child2.height = MAX(0, (gint)ceil(fraction * (allocation->height - spacing)) );
474 /* Fill in the rest of the size requisitions according to the child specified above */
478 child2.width = MAX(0, allocation->width - spacing - child1.width);
479 child2.x = child1.x + child1.width + spacing;
481 child1.height = child2.height = allocation->height;
483 case winmethod_Right:
484 child1.width = MAX(0, allocation->width - spacing - child2.width);
485 child2.x = child1.x + child1.width + spacing;
487 child1.height = child2.height = allocation->height;
489 case winmethod_Above:
490 child2.height = MAX(0, allocation->height - spacing - child1.height);
492 child2.y = child1.y + child1.height + spacing;
493 child1.width = child2.width = allocation->width;
495 case winmethod_Below:
496 child1.height = MAX(0, allocation->height - spacing - child2.height);
498 child2.y = child1.y + child1.height + spacing;
499 child1.width = child2.width = allocation->width;
504 winid_t arrange1 = allocate_recurse(win->window_node->children->data, &child1, spacing);
505 winid_t arrange2 = allocate_recurse(win->window_node->children->next->data, &child2, spacing);
513 else if(win->type == wintype_TextGrid)
515 /* Pass the size allocation on to the framing widget */
516 gtk_widget_size_allocate(win->frame, allocation);
517 /* It says in the spec that when a text grid window is resized smaller,
518 the bottom or right area is thrown away; when it is resized larger, the
519 bottom or right area is filled with blanks. */
520 glui32 newwidth = (glui32)(win->widget->allocation.width / win->unit_width);
521 glui32 newheight = (glui32)(win->widget->allocation.height / win->unit_height);
523 GtkTextBuffer *textbuffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(win->widget) );
524 GtkTextIter start, end;
526 for(line = 0; line < win->height; line++)
528 gtk_text_buffer_get_iter_at_line(textbuffer, &start, line);
529 /* If this line is going to fall off the bottom, delete it */
530 if(line >= newheight)
533 gtk_text_iter_forward_to_line_end(&end);
534 gtk_text_iter_forward_char(&end);
535 gtk_text_buffer_delete(textbuffer, &start, &end);
538 /* If this line is not long enough, add spaces on the end */
539 if(newwidth > win->width)
541 gchar *spaces = g_strnfill(newwidth - win->width, ' ');
542 gtk_text_iter_forward_to_line_end(&start);
543 gtk_text_buffer_insert(textbuffer, &start, spaces, -1);
546 /* But if it's too long, delete characters from the end */
547 else if(newwidth < win->width)
550 gtk_text_iter_forward_chars(&start, newwidth);
551 gtk_text_iter_forward_to_line_end(&end);
552 gtk_text_buffer_delete(textbuffer, &start, &end);
554 /* Note: if the widths are equal, do nothing */
556 /* Add blank lines if there aren't enough lines to fit the new size */
557 if(newheight > win->height)
559 gchar *blanks = g_strnfill(win->width, ' ');
560 gchar **blanklines = g_new0(gchar *, (newheight - win->height) + 1);
562 for(count = 0; count < newheight - win->height; count++)
563 blanklines[count] = blanks;
564 blanklines[newheight - win->height] = NULL;
565 gchar *text = g_strjoinv("\n", blanklines);
566 g_free(blanklines); /* not g_strfreev() */
569 gtk_text_buffer_get_end_iter(textbuffer, &start);
570 gtk_text_buffer_insert(textbuffer, &start, "\n", -1);
571 gtk_text_buffer_insert(textbuffer, &start, text, -1);
575 gboolean arrange = !(win->width == newwidth && win->height == newheight);
576 win->width = newwidth;
577 win->height = newheight;
578 return arrange? win : NULL;
581 /* For non-pair, non-text-grid windows, just give them the size */
582 gtk_widget_size_allocate(win->frame, allocation);
586 /* Overrides gtk_widget_size_allocate */
588 chimara_glk_size_allocate(GtkWidget *widget, GtkAllocation *allocation)
590 g_return_if_fail(widget);
591 g_return_if_fail(allocation);
592 g_return_if_fail(CHIMARA_IS_GLK(widget));
594 ChimaraGlkPrivate *priv = CHIMARA_GLK_PRIVATE(widget);
596 widget->allocation = *allocation;
598 if(priv->root_window) {
600 child.x = allocation->x + GTK_CONTAINER(widget)->border_width;
601 child.y = allocation->y + GTK_CONTAINER(widget)->border_width;
602 child.width = CLAMP(allocation->width - 2 * GTK_CONTAINER(widget)->border_width, 0, allocation->width);
603 child.height = CLAMP(allocation->height - 2 * GTK_CONTAINER(widget)->border_width, 0, allocation->height);
604 winid_t arrange = allocate_recurse(priv->root_window->data, &child, priv->spacing);
606 /* arrange points to a window that contains all text grid and graphics
607 windows which have been resized */
608 g_mutex_lock(priv->arrange_lock);
609 if(!priv->ignore_next_arrange_event)
612 event_throw(CHIMARA_GLK(widget), evtype_Arrange, arrange == priv->root_window->data? NULL : arrange, 0, 0);
615 priv->ignore_next_arrange_event = FALSE;
616 priv->needs_rearrange = FALSE;
617 g_cond_signal(priv->rearranged);
618 g_mutex_unlock(priv->arrange_lock);
622 /* Recursively invoke callback() on the GtkWidget of each non-pair window in the tree */
624 forall_recurse(winid_t win, GtkCallback callback, gpointer callback_data)
626 if(win->type == wintype_Pair)
628 forall_recurse(win->window_node->children->data, callback, callback_data);
629 forall_recurse(win->window_node->children->next->data, callback, callback_data);
632 (*callback)(win->frame, callback_data);
635 /* Overrides gtk_container_forall */
637 chimara_glk_forall(GtkContainer *container, gboolean include_internals, GtkCallback callback, gpointer callback_data)
639 g_return_if_fail(container);
640 g_return_if_fail(CHIMARA_IS_GLK(container));
642 ChimaraGlkPrivate *priv = CHIMARA_GLK_PRIVATE(container);
644 /* All the children are "internal" */
645 if(!include_internals)
648 if(priv->root_window)
649 forall_recurse(priv->root_window->data, callback, callback_data);
653 chimara_glk_stopped(ChimaraGlk *self)
655 CHIMARA_GLK_USE_PRIVATE(self, priv);
656 priv->running = FALSE;
657 priv->program_name = NULL;
658 g_object_notify(G_OBJECT(self), "program-name");
659 priv->program_info = NULL;
660 g_object_notify(G_OBJECT(self), "program-info");
661 priv->story_name = NULL;
662 g_object_notify(G_OBJECT(self), "story-name");
666 chimara_glk_started(ChimaraGlk *self)
668 CHIMARA_GLK_USE_PRIVATE(self, priv);
669 priv->running = TRUE;
673 chimara_glk_waiting(ChimaraGlk *self)
675 /* Default signal handler */
679 chimara_glk_char_input(ChimaraGlk *self, guint window_rock, guint keysym)
681 /* Default signal handler */
685 chimara_glk_line_input(ChimaraGlk *self, guint window_rock, gchar *text)
687 /* Default signal handler */
691 chimara_glk_text_buffer_output(ChimaraGlk *self, guint window_rock, gchar *text)
693 /* Default signal handler */
697 chimara_glk_iliad_screen_update(ChimaraGlk *self, gboolean typing)
699 /* Default signal handler */
702 /* COMPAT: G_PARAM_STATIC_STRINGS only appeared in GTK 2.13.0 */
703 #ifndef G_PARAM_STATIC_STRINGS
705 /* COMPAT: G_PARAM_STATIC_NAME and friends only appeared in GTK 2.8 */
706 #if GTK_CHECK_VERSION(2,8,0)
707 #define G_PARAM_STATIC_STRINGS (G_PARAM_STATIC_NAME | G_PARAM_STATIC_NICK | G_PARAM_STATIC_BLURB)
709 #define G_PARAM_STATIC_STRINGS (0)
715 chimara_glk_class_init(ChimaraGlkClass *klass)
717 /* Override methods of parent classes */
718 GObjectClass *object_class = G_OBJECT_CLASS(klass);
719 object_class->set_property = chimara_glk_set_property;
720 object_class->get_property = chimara_glk_get_property;
721 object_class->finalize = chimara_glk_finalize;
723 GtkWidgetClass *widget_class = GTK_WIDGET_CLASS(klass);
724 widget_class->size_request = chimara_glk_size_request;
725 widget_class->size_allocate = chimara_glk_size_allocate;
727 GtkContainerClass *container_class = GTK_CONTAINER_CLASS(klass);
728 container_class->forall = chimara_glk_forall;
731 klass->stopped = chimara_glk_stopped;
732 klass->started = chimara_glk_started;
733 klass->waiting = chimara_glk_waiting;
734 klass->char_input = chimara_glk_char_input;
735 klass->line_input = chimara_glk_line_input;
736 klass->text_buffer_output = chimara_glk_text_buffer_output;
737 klass->iliad_screen_update = chimara_glk_iliad_screen_update;
740 * ChimaraGlk::stopped:
741 * @glk: The widget that received the signal
743 * Emitted when the a Glk program finishes executing in the widget, whether
744 * it ended normally, or was interrupted.
746 chimara_glk_signals[STOPPED] = g_signal_new("stopped",
747 G_OBJECT_CLASS_TYPE(klass), G_SIGNAL_RUN_FIRST,
748 /* FIXME: Should be G_SIGNAL_RUN_CLEANUP but that segfaults??! */
749 G_STRUCT_OFFSET(ChimaraGlkClass, stopped), NULL, NULL,
750 g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
752 * ChimaraGlk::started:
753 * @glk: The widget that received the signal
755 * Emitted when a Glk program starts executing in the widget.
757 chimara_glk_signals[STARTED] = g_signal_new ("started",
758 G_OBJECT_CLASS_TYPE(klass), G_SIGNAL_RUN_FIRST,
759 G_STRUCT_OFFSET(ChimaraGlkClass, started), NULL, NULL,
760 g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
762 * ChimaraGlk::waiting:
763 * @glk: The widget that received the signal
765 * Emitted when glk_select() is called by the Glk program and the event
766 * queue is empty, which means that the widget is waiting for input.
768 chimara_glk_signals[WAITING] = g_signal_new("waiting",
769 G_OBJECT_CLASS_TYPE(klass), 0,
770 G_STRUCT_OFFSET(ChimaraGlkClass, waiting), NULL, NULL,
771 g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
773 * ChimaraGlk::char-input:
774 * @glk: The widget that received the signal
775 * @window_rock: The rock value of the window that received character input
776 * (see <link linkend="chimara-Rocks">Rocks</link>)
777 * @keysym: The key that was typed, in the form of a key symbol from
778 * <filename class="headerfile">gdk/gdkkeysyms.h</filename>
780 * Emitted when a Glk window receives character input.
782 chimara_glk_signals[CHAR_INPUT] = g_signal_new("char-input",
783 G_OBJECT_CLASS_TYPE(klass), 0,
784 G_STRUCT_OFFSET(ChimaraGlkClass, char_input), NULL, NULL,
785 _chimara_marshal_VOID__UINT_UINT,
786 G_TYPE_NONE, 2, G_TYPE_UINT, G_TYPE_UINT);
788 * ChimaraGlk::line-input:
789 * @glk: The widget that received the signal
790 * @window_rock: The rock value of the window that received line input (see
791 * <link linkend="chimara-Rocks">Rocks</link>)
792 * @text: The text that was typed
794 * Emitted when a Glk window receives line input.
796 chimara_glk_signals[LINE_INPUT] = g_signal_new("line-input",
797 G_OBJECT_CLASS_TYPE(klass), 0,
798 G_STRUCT_OFFSET(ChimaraGlkClass, line_input), NULL, NULL,
799 _chimara_marshal_VOID__UINT_STRING,
800 G_TYPE_NONE, 2, G_TYPE_UINT, G_TYPE_STRING);
802 * ChimaraGlk::text-buffer-output:
803 * @glk: The widget that received the signal
804 * @window_rock: The rock value of the window that was printed to (see <link
805 * linkend="chimara-Rocks">Rocks</link>)
807 * Emitted when text is printed to a text buffer window.
809 chimara_glk_signals[TEXT_BUFFER_OUTPUT] = g_signal_new("text-buffer-output",
810 G_OBJECT_CLASS_TYPE(klass), 0,
811 G_STRUCT_OFFSET(ChimaraGlkClass, text_buffer_output), NULL, NULL,
812 _chimara_marshal_VOID__UINT_STRING,
813 G_TYPE_NONE, 2, G_TYPE_UINT, G_TYPE_STRING);
815 * ChimaraGlk::iliad-screen-update:
816 * @self: The widget that received the signal
817 * @typing: Whether to perform a typing or full screen update
819 * Iliad specific signal which is emitted whenever the screen needs to be updated.
820 * Since iliad screen updates are very slow, updating should only be done when
823 chimara_glk_signals[ILIAD_SCREEN_UPDATE] = g_signal_new("iliad-screen-update",
824 G_OBJECT_CLASS_TYPE(klass), 0,
825 G_STRUCT_OFFSET(ChimaraGlkClass, iliad_screen_update), NULL, NULL,
826 _chimara_marshal_VOID__BOOLEAN,
827 G_TYPE_NONE, 1, G_TYPE_BOOLEAN);
831 * ChimaraGlk:interactive:
833 * Sets whether the widget is interactive. A Glk widget is normally
834 * interactive, but in non-interactive mode, keyboard and mouse input are
835 * ignored and the Glk program is controlled by
836 * chimara_glk_feed_char_input() and chimara_glk_feed_line_input().
837 * <quote>More</quote> prompts when a lot of text is printed to a text
838 * buffer are also disabled. This is typically used when you wish to control
839 * an interpreter program by feeding it a predefined list of commands.
841 g_object_class_install_property( object_class, PROP_INTERACTIVE,
842 g_param_spec_boolean("interactive", _("Interactive"),
843 _("Whether user input is expected in the Glk program"),
845 G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_LAX_VALIDATION | G_PARAM_STATIC_STRINGS) );
848 * ChimaraGlk:protect:
850 * Sets whether the Glk program is allowed to do file operations. In protect
851 * mode, all file operations will fail.
853 g_object_class_install_property(object_class, PROP_PROTECT,
854 g_param_spec_boolean("protect", _("Protected"),
855 _("Whether the Glk program is barred from doing file operations"),
857 G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_LAX_VALIDATION | G_PARAM_STATIC_STRINGS) );
860 * ChimaraGlk:spacing:
862 * The amount of space between the Glk windows.
864 g_object_class_install_property(object_class, PROP_SPACING,
865 g_param_spec_uint("spacing", _("Spacing"),
866 _("The amount of space between Glk windows"),
868 G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_LAX_VALIDATION | G_PARAM_STATIC_STRINGS) );
871 * ChimaraGlk:program-name:
873 * The name of the currently running Glk program. You cannot set this
874 * property yourself. It is set to the filename of the plugin when you call
875 * chimara_glk_run(), but the plugin can change it by calling
876 * garglk_set_program_name(). To find out when this information changes,
877 * for example to put the program name in the title bar of a window, connect
878 * to the <code>::notify::program-name</code> signal.
880 g_object_class_install_property(object_class, PROP_PROGRAM_NAME,
881 g_param_spec_string("program-name", _("Program name"),
882 _("Name of the currently running program"),
884 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS) );
887 * ChimaraGlk:program-info:
889 * Information about the currently running Glk program. You cannot set this
890 * property yourself. The plugin can change it by calling
891 * garglk_set_program_info(). See also #ChimaraGlk:program-name.
893 g_object_class_install_property(object_class, PROP_PROGRAM_INFO,
894 g_param_spec_string("program-info", _("Program info"),
895 _("Information about the currently running program"),
897 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS) );
900 * ChimaraGlk:story-name:
902 * The name of the story currently running in the Glk interpreter. You
903 * cannot set this property yourself. It is set to the story filename when
904 * you call chimara_if_run_game(), but the plugin can change it by calling
905 * garglk_set_story_name().
907 * Strictly speaking, this should be a property of #ChimaraIF, but it is
908 * legal for any Glk program to call garglk_set_story_name(), even if it is
909 * not an interpreter and does not load story files.
911 g_object_class_install_property(object_class, PROP_STORY_NAME,
912 g_param_spec_string("story-name", _("Story name"),
913 _("Name of the story currently loaded in the interpreter"),
915 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS) );
918 g_type_class_add_private(klass, sizeof(ChimaraGlkPrivate));
921 /* PUBLIC FUNCTIONS */
924 * chimara_error_quark:
926 * The error domain for errors from Chimara widgets.
928 * Returns: The string <quote>chimara-error-quark</quote> as a <link
929 * linkend="GQuark">GQuark</link>.
932 chimara_error_quark(void)
934 chimara_init(); /* This is a library entry point */
935 return g_quark_from_static_string("chimara-error-quark");
941 * Creates and initializes a new #ChimaraGlk widget.
943 * Return value: a #ChimaraGlk widget, with a floating reference.
946 chimara_glk_new(void)
948 /* This is a library entry point; initialize the library */
951 return GTK_WIDGET(g_object_new(CHIMARA_TYPE_GLK, NULL));
955 * chimara_glk_set_interactive:
956 * @glk: a #ChimaraGlk widget
957 * @interactive: whether the widget should expect user input
959 * Sets the #ChimaraGlk:interactive property of @glk.
962 chimara_glk_set_interactive(ChimaraGlk *glk, gboolean interactive)
964 g_return_if_fail(glk || CHIMARA_IS_GLK(glk));
966 ChimaraGlkPrivate *priv = CHIMARA_GLK_PRIVATE(glk);
967 priv->interactive = interactive;
968 g_object_notify(G_OBJECT(glk), "interactive");
972 * chimara_glk_get_interactive:
973 * @glk: a #ChimaraGlk widget
975 * Returns whether @glk is interactive (expecting user input). See
976 * #ChimaraGlk:interactive.
978 * Return value: %TRUE if @glk is interactive.
981 chimara_glk_get_interactive(ChimaraGlk *glk)
983 g_return_val_if_fail(glk || CHIMARA_IS_GLK(glk), FALSE);
985 ChimaraGlkPrivate *priv = CHIMARA_GLK_PRIVATE(glk);
986 return priv->interactive;
990 * chimara_glk_set_protect:
991 * @glk: a #ChimaraGlk widget
992 * @protect: whether the widget should allow the Glk program to do file
995 * Sets the #ChimaraGlk:protect property of @glk. In protect mode, the Glk
996 * program is not allowed to do file operations.
999 chimara_glk_set_protect(ChimaraGlk *glk, gboolean protect)
1001 g_return_if_fail(glk || CHIMARA_IS_GLK(glk));
1003 ChimaraGlkPrivate *priv = CHIMARA_GLK_PRIVATE(glk);
1004 priv->protect = protect;
1005 g_object_notify(G_OBJECT(glk), "protect");
1009 * chimara_glk_get_protect:
1010 * @glk: a #ChimaraGlk widget
1012 * Returns whether @glk is in protect mode (banned from doing file operations).
1013 * See #ChimaraGlk:protect.
1015 * Return value: %TRUE if @glk is in protect mode.
1018 chimara_glk_get_protect(ChimaraGlk *glk)
1020 g_return_val_if_fail(glk || CHIMARA_IS_GLK(glk), FALSE);
1022 ChimaraGlkPrivate *priv = CHIMARA_GLK_PRIVATE(glk);
1023 return priv->protect;
1027 * chimara_glk_set_css_to_default:
1028 * @glk: a #ChimaraGlk widget
1030 * Resets the styles for text buffer and text grid windows to their defaults.
1032 * This function is not implemented yet.
1036 chimara_glk_set_css_to_default(ChimaraGlk *glk)
1038 reset_default_styles(glk);
1042 * chimara_glk_set_css_from_file:
1043 * @glk: a #ChimaraGlk widget
1044 * @filename: path to a CSS file, or %NULL
1045 * @error: location to store a <link
1046 * linkend="glib-Error-Reporting">GError</link>, or %NULL
1048 * Sets the styles for text buffer and text grid windows according to the CSS
1049 * file @filename. Note that the styles are set cumulatively on top of whatever
1050 * the styles are at the time this function is called; to reset the styles to
1051 * their defaults, use chimara_glk_set_css_to_default().
1053 * Returns: %TRUE on success, %FALSE if an error occurred, in which case @error
1057 chimara_glk_set_css_from_file(ChimaraGlk *glk, const gchar *filename, GError **error)
1059 g_return_val_if_fail(glk || CHIMARA_IS_GLK(glk), FALSE);
1060 g_return_val_if_fail(filename, FALSE);
1061 g_return_val_if_fail(error == NULL || *error == NULL, FALSE);
1063 int fd = open(filename, O_RDONLY);
1066 *error = g_error_new(G_IO_ERROR, g_io_error_from_errno(errno),
1067 _("Error opening file \"%s\": %s"), filename, g_strerror(errno));
1071 GScanner *scanner = create_css_file_scanner();
1072 g_scanner_input_file(scanner, fd);
1073 scanner->input_name = filename;
1074 scan_css_file(scanner, glk);
1076 if(close(fd) == -1) {
1078 *error = g_error_new(G_IO_ERROR, g_io_error_from_errno(errno),
1079 _("Error closing file \"%s\": %s"), filename, g_strerror(errno));
1086 * chimara_glk_set_css_from_string:
1087 * @glk: a #ChimaraGlk widget
1088 * @css: a string containing CSS code
1090 * Sets the styles for text buffer and text grid windows according to the CSS
1091 * code @css. Note that the styles are set cumulatively on top of whatever the
1092 * styles are at the time this function is called; to reset the styles to their
1093 * defaults, use chimara_glk_set_css_to_default().
1096 chimara_glk_set_css_from_string(ChimaraGlk *glk, const gchar *css)
1098 g_return_if_fail(glk || CHIMARA_IS_GLK(glk));
1099 g_return_if_fail(css || *css);
1101 GScanner *scanner = create_css_file_scanner();
1102 g_scanner_input_text(scanner, css, strlen(css));
1103 scanner->input_name = "<string>";
1104 scan_css_file(scanner, glk);
1108 * chimara_glk_set_spacing:
1109 * @glk: a #ChimaraGlk widget
1110 * @spacing: the number of pixels to put between Glk windows
1112 * Sets the #ChimaraGlk:spacing property of @glk, which is the border width in
1113 * pixels between Glk windows.
1116 chimara_glk_set_spacing(ChimaraGlk *glk, guint spacing)
1118 g_return_if_fail( glk || CHIMARA_IS_GLK(glk) );
1120 ChimaraGlkPrivate *priv = CHIMARA_GLK_PRIVATE(glk);
1121 priv->spacing = spacing;
1122 g_object_notify(G_OBJECT(glk), "spacing");
1126 * chimara_glk_get_spacing:
1127 * @glk: a #ChimaraGlk widget
1129 * Gets the value set by chimara_glk_set_spacing().
1131 * Return value: pixels of spacing between Glk windows
1134 chimara_glk_get_spacing(ChimaraGlk *glk)
1136 g_return_val_if_fail(glk || CHIMARA_IS_GLK(glk), 0);
1138 ChimaraGlkPrivate *priv = CHIMARA_GLK_PRIVATE(glk);
1139 return priv->spacing;
1142 struct StartupData {
1143 glk_main_t glk_main;
1144 glkunix_startup_code_t glkunix_startup_code;
1145 glkunix_startup_t args;
1146 ChimaraGlkPrivate *glk_data;
1149 /* glk_enter() is the actual function called in the new thread in which glk_main() runs. */
1151 glk_enter(struct StartupData *startup)
1153 extern GPrivate *glk_data_key;
1154 g_private_set(glk_data_key, startup->glk_data);
1156 /* Acquire the Glk thread's references to the input queues */
1157 g_async_queue_ref(startup->glk_data->char_input_queue);
1158 g_async_queue_ref(startup->glk_data->line_input_queue);
1160 /* Run startup function */
1161 if(startup->glkunix_startup_code) {
1162 startup->glk_data->in_startup = TRUE;
1163 int result = startup->glkunix_startup_code(&startup->args);
1164 startup->glk_data->in_startup = FALSE;
1167 while(i < startup->args.argc)
1168 g_free(startup->args.argv[i++]);
1169 g_free(startup->args.argv);
1175 /* Run main function */
1176 glk_main_t glk_main = startup->glk_main;
1178 /* COMPAT: avoid usage of slices */
1180 g_signal_emit_by_name(startup->glk_data->self, "started");
1182 glk_exit(); /* Run shutdown code in glk_exit() even if glk_main() returns normally */
1183 g_assert_not_reached(); /* because glk_exit() calls g_thread_exit() */
1189 * @glk: a #ChimaraGlk widget
1190 * @plugin: path to a plugin module compiled with <filename
1191 * class="header">glk.h</filename>
1192 * @argc: Number of command line arguments in @argv
1193 * @argv: Array of command line arguments to pass to the plugin
1194 * @error: location to store a <link
1195 * linkend="glib-Error-Reporting">GError</link>, or %NULL
1197 * Opens a Glk program compiled as a plugin. Sorts out its command line
1198 * arguments from #glkunix_arguments, calls its startup function
1199 * glkunix_startup_code(), and then calls its main function glk_main() in
1200 * a separate thread. On failure, returns %FALSE and sets @error.
1202 * The plugin must at least export a glk_main() function; #glkunix_arguments and
1203 * glkunix_startup_code() are optional.
1205 * Return value: %TRUE if the Glk program was started successfully.
1208 chimara_glk_run(ChimaraGlk *glk, const gchar *plugin, int argc, char *argv[], GError **error)
1210 g_return_val_if_fail(glk || CHIMARA_IS_GLK(glk), FALSE);
1211 g_return_val_if_fail(plugin, FALSE);
1212 g_return_val_if_fail(error == NULL || *error == NULL, FALSE);
1214 if(chimara_glk_get_running(glk)) {
1215 g_set_error(error, CHIMARA_ERROR, CHIMARA_PLUGIN_ALREADY_RUNNING, _("There was already a plugin running."));
1219 ChimaraGlkPrivate *priv = CHIMARA_GLK_PRIVATE(glk);
1221 /* COMPAT: avoid usage of slices */
1222 struct StartupData *startup = g_new0(struct StartupData,1);
1224 g_assert( g_module_supported() );
1225 /* If there is already a module loaded, free it first -- you see, we want to
1226 * keep modules loaded as long as possible to avoid crashes in stack unwinding */
1227 if( priv->program && !g_module_close(priv->program) )
1228 g_warning( "Error closing module :%s", g_module_error() );
1229 /* Open the module to run */
1230 priv->program = g_module_open(plugin, G_MODULE_BIND_LAZY);
1234 g_set_error(error, CHIMARA_ERROR, CHIMARA_LOAD_MODULE_ERROR, _("Error opening module: %s"), g_module_error());
1237 if( !g_module_symbol(priv->program, "glk_main", (gpointer *) &startup->glk_main) )
1239 g_set_error(error, CHIMARA_ERROR, CHIMARA_NO_GLK_MAIN, _("Error finding glk_main(): %s"), g_module_error());
1243 if( g_module_symbol(priv->program, "glkunix_startup_code", (gpointer *) &startup->glkunix_startup_code) )
1245 glkunix_argumentlist_t *glkunix_arguments;
1247 if( !(g_module_symbol(priv->program, "glkunix_arguments", (gpointer *) &glkunix_arguments)
1248 && parse_command_line(glkunix_arguments, argc, argv, &startup->args)) )
1250 /* arguments could not be parsed, so create data ourselves */
1251 startup->args.argc = 1;
1252 startup->args.argv = g_new0(gchar *, 1);
1255 /* Set the program invocation name */
1256 startup->args.argv[0] = g_strdup(plugin);
1258 startup->glk_data = priv;
1260 /* Set the program name */
1261 priv->program_name = g_path_get_basename(plugin);
1262 g_object_notify(G_OBJECT(glk), "program-name");
1264 /* Run in a separate thread */
1265 priv->thread = g_thread_create((GThreadFunc)glk_enter, startup, TRUE, error);
1267 return !(priv->thread == NULL);
1272 * @glk: a #ChimaraGlk widget
1274 * Signals the Glk program running in @glk to abort. Note that if the program is
1275 * caught in an infinite loop in which glk_tick() is not called, this may not
1279 chimara_glk_stop(ChimaraGlk *glk)
1281 g_return_if_fail(glk || CHIMARA_IS_GLK(glk));
1282 CHIMARA_GLK_USE_PRIVATE(glk, priv);
1284 /* Don't do anything if not running a program */
1288 if(priv->abort_lock) {
1289 g_mutex_lock(priv->abort_lock);
1290 priv->abort_signalled = TRUE;
1291 g_mutex_unlock(priv->abort_lock);
1292 /* Stop blocking on the event queue condition */
1293 event_throw(glk, evtype_Abort, NULL, 0, 0);
1294 /* Stop blocking on the shutdown key press condition */
1295 g_mutex_lock(priv->shutdown_lock);
1296 g_cond_signal(priv->shutdown_key_pressed);
1297 g_mutex_unlock(priv->shutdown_lock);
1303 * @glk: a #ChimaraGlk widget
1305 * Holds up the main thread and waits for the Glk program running in @glk to
1309 chimara_glk_wait(ChimaraGlk *glk)
1311 g_return_if_fail(glk || CHIMARA_IS_GLK(glk));
1312 CHIMARA_GLK_USE_PRIVATE(glk, priv);
1313 /* Don't do anything if not running a program */
1316 /* Unlock GDK mutex, because the Glk program might need to use it for shutdown */
1317 gdk_threads_leave();
1318 g_thread_join(priv->thread);
1319 gdk_threads_enter();
1323 * chimara_glk_get_running:
1324 * @glk: a #ChimaraGlk widget
1326 * Use this function to tell whether a program is currently running in the
1329 * Returns: %TRUE if @glk is executing a Glk program, %FALSE otherwise.
1332 chimara_glk_get_running(ChimaraGlk *glk)
1334 g_return_val_if_fail(glk || CHIMARA_IS_GLK(glk), FALSE);
1335 CHIMARA_GLK_USE_PRIVATE(glk, priv);
1336 return priv->running;
1340 * chimara_glk_feed_char_input:
1341 * @glk: a #ChimaraGlk widget
1342 * @keyval: a key symbol as defined in <filename
1343 * class="headerfile">gdk/gdkkeysyms.h</filename>
1345 * Pretend that a key was pressed in the Glk program as a response to a
1346 * character input request. You can call this function even when no window has
1347 * requested character input, in which case the key will be saved for the
1348 * following window that requests character input. This has the disadvantage
1349 * that if more than one window has requested character input, it is arbitrary
1350 * which one gets the key press.
1353 chimara_glk_feed_char_input(ChimaraGlk *glk, guint keyval)
1355 g_return_if_fail(glk || CHIMARA_IS_GLK(glk));
1356 CHIMARA_GLK_USE_PRIVATE(glk, priv);
1357 g_async_queue_push(priv->char_input_queue, GUINT_TO_POINTER(keyval));
1358 event_throw(glk, evtype_ForcedCharInput, NULL, 0, 0);
1362 * chimara_glk_feed_line_input:
1363 * @glk: a #ChimaraGlk widget
1364 * @text: text to pass to the next line input request
1366 * Pretend that @text was typed in the Glk program as a response to a line input
1367 * request. @text does not need to end with a newline. You can call this
1368 * function even when no window has requested line input, in which case the text
1369 * will be saved for the following window that requests line input. This has the
1370 * disadvantage that if more than one window has requested line input, it is
1371 * arbitrary which one gets the text.
1374 chimara_glk_feed_line_input(ChimaraGlk *glk, const gchar *text)
1376 g_return_if_fail(glk || CHIMARA_IS_GLK(glk));
1377 g_return_if_fail(text);
1378 CHIMARA_GLK_USE_PRIVATE(glk, priv);
1379 g_async_queue_push(priv->line_input_queue, g_strdup(text));
1380 event_throw(glk, evtype_ForcedLineInput, NULL, 0, 0);
1384 * chimara_glk_is_char_input_pending:
1385 * @glk: a #ChimaraGlk widget
1387 * Use this function to tell if character input forced by
1388 * chimara_glk_feed_char_input() has been passed to an input request or not.
1390 * Returns: %TRUE if forced character input is pending, %FALSE otherwise.
1393 chimara_glk_is_char_input_pending(ChimaraGlk *glk)
1395 g_return_val_if_fail(glk || CHIMARA_IS_GLK(glk), FALSE);
1396 CHIMARA_GLK_USE_PRIVATE(glk, priv);
1397 return g_async_queue_length(priv->char_input_queue) > 0;
1401 * chimara_glk_is_line_input_pending:
1402 * @glk: a #ChimaraGlk widget
1404 * Use this function to tell if line input forced by
1405 * chimara_glk_feed_line_input() has been passed to an input request or not.
1407 * Returns: %TRUE if forced line input is pending, %FALSE otherwise.
1410 chimara_glk_is_line_input_pending(ChimaraGlk *glk)
1412 g_return_val_if_fail(glk || CHIMARA_IS_GLK(glk), FALSE);
1413 CHIMARA_GLK_USE_PRIVATE(glk, priv);
1414 return g_async_queue_length(priv->line_input_queue) > 0;
1418 * chimara_glk_get_tag:
1419 * @glk: a #ChimaraGlk widget
1420 * @window: The type of window to retrieve the tag for
1421 * @name: The name of the tag to retrieve
1423 * Use this function to get a #GtkTextTag so style properties can be changed.
1424 * See also chimara_glk_set_css_from_string().
1426 * The layout of the text in Chimara is controlled by two sets of tags: one set
1427 * describing the style in text buffers and one for text grids. See also the
1428 * Glk specification for the difference between the two. The main narrative of
1429 * a game is usually rendered in text buffers, whereas text grids are mostly
1430 * used for status bars and in game menus.
1432 * The following tag names are supported:
1434 * <listitem><para>normal</para></listitem>
1435 * <listitem><para>emphasized</para></listitem>
1436 * <listitem><para>preformatted</para></listitem>
1437 * <listitem><para>header</para></listitem>
1438 * <listitem><para>subheader</para></listitem>
1439 * <listitem><para>alert</para></listitem>
1440 * <listitem><para>note</para></listitem>
1441 * <listitem><para>block-quote</para></listitem>
1442 * <listitem><para>input</para></listitem>
1443 * <listitem><para>user1</para></listitem>
1444 * <listitem><para>user2</para></listitem>
1445 * <listitem><para>hyperlink</para></listitem>
1446 * <listitem><para>pager</para></listitem>
1450 chimara_glk_get_tag(ChimaraGlk *glk, ChimaraGlkWindowType window, const gchar *name)
1452 CHIMARA_GLK_USE_PRIVATE(glk, priv);
1455 case CHIMARA_GLK_TEXT_BUFFER:
1456 return GTK_TEXT_TAG( g_hash_table_lookup(priv->styles->text_buffer, name) );
1458 case CHIMARA_GLK_TEXT_GRID:
1459 return GTK_TEXT_TAG( g_hash_table_lookup(priv->styles->text_grid, name) );
1462 ILLEGAL_PARAM("Unknown window type: %u", window);
1468 * chimara_glk_get_tag_names:
1469 * @glk: a #ChimaraGlk widget
1471 * Retrieves the possible tag names to use in chimara_glk_get_tag().
1474 chimara_glk_get_tag_names(ChimaraGlk *glk)
1476 return style_get_tag_names();
1480 * chimara_glk_get_num_tag_names:
1481 * @glk: a #ChimaraGlk widget
1483 * Retrieves the number of style tags returned by chimara_glk_get_tag_names().
1486 chimara_glk_get_num_tag_names(ChimaraGlk *glk)
1488 return CHIMARA_NUM_STYLES;
1492 * chimara_glk_update_style:
1493 * @glk: a #ChimaraGlk widget
1495 * Processes style updates and updates the widget to reflect the new style.
1496 * Call this every time you change a property of a #GtkTextTag retrieved by
1497 * chimara_glk_get_tag().
1500 chimara_glk_update_style(ChimaraGlk *glk)
1502 CHIMARA_GLK_USE_PRIVATE(glk, priv);
1505 /* Schedule a redraw */
1506 g_mutex_lock(priv->arrange_lock);
1507 priv->needs_rearrange = TRUE;
1508 priv->ignore_next_arrange_event = TRUE;
1509 g_mutex_unlock(priv->arrange_lock);
1510 gtk_widget_queue_resize( GTK_WIDGET(priv->self) );
1514 * chimara_glk_set_resource_load_callback:
1515 * @glk: a #ChimaraGlk widget
1516 * @func: a function to call for loading resources, or %NULL
1517 * @user_data: user data to pass to @func, or %NULL
1519 * Sometimes it is preferable to load image and sound resources from somewhere
1520 * else than a Blorb file, for example while developing a game. Section 14 of
1521 * the <ulink url="http://eblong.com/zarf/blorb/blorb.html#s14">Blorb
1522 * specification</ulink> allows for this possibility. This function sets @func
1523 * to be called when the Glk program requests loading an image or sound without
1524 * a Blorb resource map having been loaded, optionally passing @user_data as an
1527 * Note that @func is only called if no Blorb resource map has been set; having
1528 * a resource map in place overrides this function.
1530 * To deactivate the callback, call this function with @func set to %NULL.
1533 chimara_glk_set_resource_load_callback(ChimaraGlk *glk, ChimaraResourceLoadFunc func, gpointer user_data)
1535 CHIMARA_GLK_USE_PRIVATE(glk, priv);
1536 priv->resource_load_callback = func;
1537 priv->resource_load_callback_data = user_data;