1 /* GTK - The GIMP Toolkit
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
21 * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
22 * file for a list of people on the GTK+ Team. See the ChangeLog
23 * files for a list of changes. These files are distributed with
24 * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
27 #include "gdkconfig.h"
31 #ifdef HAVE_BIND_TEXTDOMAIN_CODESET
43 #include <pango/pango-utils.h> /* For pango_split_file_list */
46 #include "gtkversion.h"
49 #include "gtkselection.h"
50 #include "gtksettings.h"
51 #include "gtksignal.h"
52 #include "gtkwidget.h"
53 #include "gtkwindow.h"
54 #include "gtkprivate.h"
55 #include "gdk/gdki18n.h"
60 /* Private type definitions
62 typedef struct _GtkInitFunction GtkInitFunction;
63 typedef struct _GtkQuitFunction GtkQuitFunction;
64 typedef struct _GtkClosure GtkClosure;
65 typedef struct _GtkKeySnooperData GtkKeySnooperData;
67 struct _GtkInitFunction
73 struct _GtkQuitFunction
77 GtkCallbackMarshal marshal;
80 GtkDestroyNotify destroy;
85 GtkCallbackMarshal marshal;
87 GtkDestroyNotify destroy;
90 struct _GtkKeySnooperData
97 static void gtk_exit_func (void);
98 static gint gtk_quit_invoke_function (GtkQuitFunction *quitf);
99 static void gtk_quit_destroy (GtkQuitFunction *quitf);
100 static gint gtk_invoke_key_snoopers (GtkWidget *grab_widget,
103 static void gtk_destroy_closure (gpointer data);
104 static gboolean gtk_invoke_idle_timeout (gpointer data);
105 static void gtk_invoke_input (gpointer data,
107 GdkInputCondition condition);
110 static void gtk_error (gchar *str);
111 static void gtk_warning (gchar *str);
112 static void gtk_message (gchar *str);
113 static void gtk_print (gchar *str);
116 static GtkWindowGroup *gtk_main_get_window_group (GtkWidget *widget);
118 const guint gtk_major_version = GTK_MAJOR_VERSION;
119 const guint gtk_minor_version = GTK_MINOR_VERSION;
120 const guint gtk_micro_version = GTK_MICRO_VERSION;
121 const guint gtk_binary_age = GTK_BINARY_AGE;
122 const guint gtk_interface_age = GTK_INTERFACE_AGE;
124 static guint gtk_main_loop_level = 0;
125 static gint gtk_initialized = FALSE;
126 static GList *current_events = NULL;
128 static GSList *main_loops = NULL; /* stack of currently executing main loops */
130 static GList *init_functions = NULL; /* A list of init functions.
132 static GList *quit_functions = NULL; /* A list of quit functions.
134 static GMemChunk *quit_mem_chunk = NULL;
136 static GSList *key_snoopers = NULL;
138 static GdkVisual *gtk_visual; /* The visual to be used in creating new
141 static GdkColormap *gtk_colormap; /* The colormap to be used in creating new
145 guint gtk_debug_flags = 0; /* Global GTK debug flag */
147 #ifdef G_ENABLE_DEBUG
148 static const GDebugKey gtk_debug_keys[] = {
149 {"misc", GTK_DEBUG_MISC},
150 {"plugsocket", GTK_DEBUG_PLUGSOCKET},
151 {"text", GTK_DEBUG_TEXT},
152 {"tree", GTK_DEBUG_TREE},
153 {"updates", GTK_DEBUG_UPDATES}
156 static const guint gtk_ndebug_keys = sizeof (gtk_debug_keys) / sizeof (GDebugKey);
158 #endif /* G_ENABLE_DEBUG */
161 gtk_check_version (guint required_major,
162 guint required_minor,
163 guint required_micro)
165 if (required_major > GTK_MAJOR_VERSION)
166 return "Gtk+ version too old (major mismatch)";
167 if (required_major < GTK_MAJOR_VERSION)
168 return "Gtk+ version too new (major mismatch)";
169 if (required_minor > GTK_MINOR_VERSION)
170 return "Gtk+ version too old (minor mismatch)";
171 if (required_minor < GTK_MINOR_VERSION)
172 return "Gtk+ version too new (minor mismatch)";
173 if (required_micro < GTK_MICRO_VERSION - GTK_BINARY_AGE)
174 return "Gtk+ version too new (micro mismatch)";
175 if (required_micro > GTK_MICRO_VERSION)
176 return "Gtk+ version too old (micro mismatch)";
180 #undef gtk_init_check
182 /* This checks to see if the process is running suid or sgid
183 * at the current time. If so, we don't allow GTK+ to be initialized.
184 * This is meant to be a mild check - we only error out if we
185 * can prove the programmer is doing something wrong, not if
186 * they could be doing something wrong. For this reason, we
187 * don't use issetugid() on BSD or prctl (PR_GET_DUMPABLE).
192 /* this isn't at all relevant on MS Windows and doesn't compile ... --hb */
194 uid_t ruid, euid, suid; /* Real, effective and saved user ID's */
195 gid_t rgid, egid, sgid; /* Real, effective and saved group ID's */
197 #ifdef HAVE_GETRESUID
198 /* These aren't in the header files, so we prototype them here.
200 int getresuid(uid_t *ruid, uid_t *euid, uid_t *suid);
201 int getresgid(gid_t *rgid, gid_t *egid, gid_t *sgid);
203 if (getresuid (&ruid, &euid, &suid) != 0 ||
204 getresgid (&rgid, &egid, &sgid) != 0)
205 #endif /* HAVE_GETRESUID */
207 suid = ruid = getuid ();
208 sgid = rgid = getgid ();
213 if (ruid != euid || ruid != suid ||
214 rgid != egid || rgid != sgid)
216 g_warning ("This process is currently running setuid or setgid.\n"
217 "This is not a supported use of GTK+. You must create a helper\n"
218 "program instead. For further details, see:\n\n"
219 " http://www.gtk.org/setuid.html\n\n"
220 "Refusing to initialize GTK+.");
228 get_module_path (void)
230 gchar *module_path = g_getenv ("GTK_MODULE_PATH");
231 gchar *exe_prefix = g_getenv("GTK_EXE_PREFIX");
236 default_dir = g_build_filename (exe_prefix, "lib", "gtk-2.0", "modules", NULL);
240 default_dir = g_build_filename (GTK_LIBDIR, "gtk-2.0", "modules", NULL);
242 default_dir = g_build_filename (get_gtk_win32_directory (""), "modules", NULL);
245 module_path = g_strconcat (module_path ? module_path : "",
246 module_path ? G_SEARCHPATH_SEPARATOR_S : "",
249 result = pango_split_file_list (module_path);
251 g_free (default_dir);
252 g_free (module_path);
258 find_module (gchar **module_path,
265 if (g_path_is_absolute (name))
266 return g_module_open (name, G_MODULE_BIND_LAZY);
268 for (i = 0; module_path[i]; i++)
270 gchar *version_directory;
272 #ifndef G_OS_WIN32 /* ignoring GTK_BINARY_VERSION elsewhere too */
273 version_directory = g_build_filename (module_path[i], GTK_BINARY_VERSION, NULL);
274 module_name = g_module_build_path (version_directory, name);
275 g_free (version_directory);
277 if (g_file_test (module_name, G_FILE_TEST_EXISTS))
279 g_free (module_name);
280 return g_module_open (module_name, G_MODULE_BIND_LAZY);
283 g_free (module_name);
286 module_name = g_module_build_path (module_path[i], name);
288 if (g_file_test (module_name, G_FILE_TEST_EXISTS))
290 module = g_module_open (module_name, G_MODULE_BIND_LAZY);
291 g_free (module_name);
295 g_free (module_name);
298 /* As last resort, try loading without an absolute path (using system
301 module_name = g_module_build_path (NULL, name);
302 module = g_module_open (module_name, G_MODULE_BIND_LAZY);
309 load_module (GSList *gtk_modules,
313 GtkModuleInitFunc modinit_func = NULL;
314 GModule *module = NULL;
316 if (g_module_supported ())
318 module = find_module (module_path, name);
320 g_module_symbol (module, "gtk_module_init", (gpointer*) &modinit_func) &&
323 if (!g_slist_find (gtk_modules, modinit_func))
325 g_module_make_resident (module);
326 gtk_modules = g_slist_prepend (gtk_modules, modinit_func);
330 g_module_close (module);
337 g_message ("Failed to load module \"%s\": %s",
338 module ? g_module_name (module) : name,
341 g_module_close (module);
348 load_modules (const char *module_str)
350 gchar **module_path = get_module_path ();
351 gchar **module_names = pango_split_file_list (module_str);
352 GSList *gtk_modules = NULL;
355 for (i = 0; module_names[i]; i++)
356 gtk_modules = load_module (gtk_modules, module_path, module_names[i]);
358 gtk_modules = g_slist_reverse (gtk_modules);
360 g_strfreev (module_names);
361 g_strfreev (module_path);
366 static gboolean do_setlocale = TRUE;
369 * gtk_disable_setlocale:
371 * Prevents gtk_init() and gtk_init_check() from automatically
372 * calling setlocale (LC_ALL, ""). You would want to use this
373 * function if you wanted to set the locale for your program
374 * to something other than the user's locale, or if you wanted
375 * to set different values for different locale categories.
377 * Most programs should not need to call this function.
380 gtk_disable_setlocale (void)
383 g_warning ("gtk_disable_setlocale() must be called before gtk_init()");
385 do_setlocale = FALSE;
389 gtk_init_check (int *argc,
392 GString *gtk_modules_string = NULL;
393 GSList *gtk_modules = NULL;
400 if (!check_setugid ())
404 g_set_error_handler (gtk_error);
405 g_set_warning_handler (gtk_warning);
406 g_set_message_handler (gtk_message);
407 g_set_print_handler (gtk_print);
411 setlocale (LC_ALL, "");
413 /* Initialize "gdk". We pass along the 'argc' and 'argv'
414 * parameters as they contain information that GDK uses
416 if (!gdk_init_check (argc, argv))
419 gdk_event_handler_set ((GdkEventFunc)gtk_main_do_event, NULL, NULL);
421 #ifdef G_ENABLE_DEBUG
422 env_string = getenv ("GTK_DEBUG");
423 if (env_string != NULL)
425 gtk_debug_flags = g_parse_debug_string (env_string,
430 #endif /* G_ENABLE_DEBUG */
432 env_string = getenv ("GTK_MODULES");
434 gtk_modules_string = g_string_new (env_string);
440 for (i = 1; i < *argc;)
442 if (strcmp ("--gtk-module", (*argv)[i]) == 0 ||
443 strncmp ("--gtk-module=", (*argv)[i], 13) == 0)
445 gchar *module_name = (*argv)[i] + 12;
447 if (*module_name == '=')
449 else if (i + 1 < *argc)
453 module_name = (*argv)[i];
457 if (module_name && *module_name)
459 if (gtk_modules_string)
460 g_string_append_c (gtk_modules_string, G_SEARCHPATH_SEPARATOR);
462 gtk_modules_string = g_string_new (NULL);
464 g_string_append (gtk_modules_string, module_name);
467 else if (strcmp ("--g-fatal-warnings", (*argv)[i]) == 0)
469 GLogLevelFlags fatal_mask;
471 fatal_mask = g_log_set_always_fatal (G_LOG_FATAL_MASK);
472 fatal_mask |= G_LOG_LEVEL_WARNING | G_LOG_LEVEL_CRITICAL;
473 g_log_set_always_fatal (fatal_mask);
476 #ifdef G_ENABLE_DEBUG
477 else if ((strcmp ("--gtk-debug", (*argv)[i]) == 0) ||
478 (strncmp ("--gtk-debug=", (*argv)[i], 12) == 0))
480 gchar *equal_pos = strchr ((*argv)[i], '=');
482 if (equal_pos != NULL)
484 gtk_debug_flags |= g_parse_debug_string (equal_pos+1,
488 else if ((i + 1) < *argc && (*argv)[i + 1])
490 gtk_debug_flags |= g_parse_debug_string ((*argv)[i+1],
498 else if ((strcmp ("--gtk-no-debug", (*argv)[i]) == 0) ||
499 (strncmp ("--gtk-no-debug=", (*argv)[i], 15) == 0))
501 gchar *equal_pos = strchr ((*argv)[i], '=');
503 if (equal_pos != NULL)
505 gtk_debug_flags &= ~g_parse_debug_string (equal_pos+1,
509 else if ((i + 1) < *argc && (*argv)[i + 1])
511 gtk_debug_flags &= ~g_parse_debug_string ((*argv)[i+1],
519 #endif /* G_ENABLE_DEBUG */
523 for (i = 1; i < *argc; i++)
525 for (k = i; k < *argc; k++)
526 if ((*argv)[k] != NULL)
532 for (j = i + k; j < *argc; j++)
533 (*argv)[j-k] = (*argv)[j];
539 if (gtk_debug_flags & GTK_DEBUG_UPDATES)
540 gdk_window_set_debug_updates (TRUE);
542 /* load gtk modules */
543 if (gtk_modules_string)
545 gtk_modules = load_modules (gtk_modules_string->str);
546 g_string_free (gtk_modules_string, TRUE);
551 bindtextdomain (GETTEXT_PACKAGE, GTK_LOCALEDIR);
552 # ifdef HAVE_BIND_TEXTDOMAIN_CODESET
553 bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
555 # else /* !G_OS_WIN32 */
557 bindtextdomain (GETTEXT_PACKAGE,
558 g_win32_get_package_installation_subdirectory (GETTEXT_PACKAGE,
559 g_strdup_printf ("gtk-win32-%d.%d.dll", GTK_MAJOR_VERSION, GTK_MINOR_VERSION),
566 /* Translate to default:RTL if you want your widgets
567 * to be RTL, otherwise translate to default:LTR.
568 * Do *not* translate it to "predefinito:LTR", if it
569 * it isn't default:LTR or default:RTL it will not work
571 char *e = _("default:LTR");
572 if (strcmp (e, "default:RTL")==0) {
573 gtk_widget_set_default_direction (GTK_TEXT_DIR_RTL);
574 } else if (strcmp (e, "default:LTR")) {
575 g_warning ("Whoever translated default:LTR did so wrongly.\n");
579 /* Initialize the default visual and colormap to be
580 * used in creating widgets. (We want to use the system
581 * defaults so as to be nice to the colormap).
583 gtk_visual = gdk_visual_get_system ();
584 gtk_colormap = gdk_colormap_get_system ();
590 /* Register an exit function to make sure we are able to cleanup.
592 g_atexit (gtk_exit_func);
594 /* Set the 'initialized' flag.
596 gtk_initialized = TRUE;
598 /* initialize gtk modules
600 for (slist = gtk_modules; slist; slist = slist->next)
604 GtkModuleInitFunc modinit;
606 modinit = slist->data;
607 modinit (argc, argv);
610 g_slist_free (gtk_modules);
613 /* No use warning on Win32, there aren't any non-devel versions anyhow... */
614 g_message ("" "YOU ARE USING THE DEVEL BRANCH 1.3.x OF GTK+ WHICH IS CURRENTLY\n"
615 " UNDER HEAVY DEVELOPMENT AND FREQUENTLY INTRODUCES INSTABILITIES.\n"
616 " if you don't know why you are getting this, you probably want to\n"
617 " use the stable branch which can be retrieved from\n"
618 " ftp://ftp.gtk.org/pub/gtk/v1.2/ or via CVS with\n"
619 " cvs checkout -r glib-1-2 glib; cvs checkout -r gtk-1-2 gtk+");
628 gtk_init (int *argc, char ***argv)
630 if (!gtk_init_check (argc, argv))
632 g_warning ("cannot open display: %s", gdk_get_display ());
640 check_sizeof_GtkWindow (size_t sizeof_GtkWindow)
642 if (sizeof_GtkWindow != sizeof (GtkWindow))
643 g_error ("Incompatible build!\n"
644 "The code using GTK+ thinks GtkWindow is of different\n"
645 "size than it actually is in this build of GTK+.\n"
646 "On Windows, this probably means that you have compiled\n"
647 "your code with gcc without the -fnative-struct switch.");
650 /* These two functions might get more checks added later, thus pass
651 * in the number of extra args.
654 gtk_init_abi_check (int *argc, char ***argv, int num_checks, size_t sizeof_GtkWindow)
656 check_sizeof_GtkWindow (sizeof_GtkWindow);
657 gtk_init (argc, argv);
661 gtk_init_check_abi_check (int *argc, char ***argv, int num_checks, size_t sizeof_GtkWindow)
663 check_sizeof_GtkWindow (sizeof_GtkWindow);
664 return gtk_init_check (argc, argv);
670 gtk_exit (gint errorcode)
672 /* Only if "gtk" has been initialized should we de-initialize.
674 /* de-initialisation is done by the gtk_exit_funct(),
675 * no need to do this here (Alex J.)
677 gdk_exit (errorcode);
684 * Initializes internationalization support for GTK+. gtk_init()
685 * automatically does this, so there is typically no point
686 * in calling this function.
688 * If you are calling this function because you changed the locale
689 * after GTK+ is was initialized, then calling this function
690 * may help a bit. (Note, however, that changing the locale
691 * after GTK+ is initialized may produce inconsistent results and
692 * is not really supported.)
694 * In detail - sets the current locale according to the
695 * program environment. This is the same as calling the libc function
696 * setlocale (LC_ALL, "") but also takes care of the locale specific
697 * setup of the windowing system used by GDK.
699 * Return value: a string corresponding to the locale set, as with the
700 * C library function setlocale()
703 gtk_set_locale (void)
705 return gdk_set_locale ();
709 * gtk_get_default_language:
711 * Returns the ISO language code for the default language currently in
712 * effect. (Note that this can change over the life of an
713 * application.) The default language is derived from the current
714 * locale. It determines, for example, whether GTK+ uses the
715 * right-to-left or left-to-right text direction.
717 * Return value: the default language as an allocated string, must be freed
720 gtk_get_default_language (void)
723 PangoLanguage *result;
726 lang = g_strdup (setlocale (LC_CTYPE, NULL));
727 p = strchr (lang, '.');
730 p = strchr (lang, '@');
734 result = pango_language_from_string (lang);
745 GtkInitFunction *init;
748 gtk_main_loop_level++;
750 loop = g_main_new (TRUE);
751 main_loops = g_slist_prepend (main_loops, loop);
753 tmp_list = functions = init_functions;
754 init_functions = NULL;
758 init = tmp_list->data;
759 tmp_list = tmp_list->next;
761 (* init->function) (init->data);
764 g_list_free (functions);
766 if (g_main_is_running (main_loops->data))
768 GDK_THREADS_LEAVE ();
770 GDK_THREADS_ENTER ();
776 GList *reinvoke_list = NULL;
777 GtkQuitFunction *quitf;
779 while (quit_functions)
781 quitf = quit_functions->data;
783 tmp_list = quit_functions;
784 quit_functions = g_list_remove_link (quit_functions, quit_functions);
785 g_list_free_1 (tmp_list);
787 if ((quitf->main_level && quitf->main_level != gtk_main_loop_level) ||
788 gtk_quit_invoke_function (quitf))
790 reinvoke_list = g_list_prepend (reinvoke_list, quitf);
794 gtk_quit_destroy (quitf);
801 work = g_list_last (reinvoke_list);
803 quit_functions->prev = work;
804 work->next = quit_functions;
805 quit_functions = work;
811 main_loops = g_slist_remove (main_loops, loop);
813 g_main_destroy (loop);
815 gtk_main_loop_level--;
819 gtk_main_level (void)
821 return gtk_main_loop_level;
827 g_return_if_fail (main_loops != NULL);
829 g_main_quit (main_loops->data);
833 gtk_events_pending (void)
837 GDK_THREADS_LEAVE ();
838 result = g_main_pending ();
839 GDK_THREADS_ENTER ();
845 gtk_main_iteration (void)
847 GDK_THREADS_LEAVE ();
848 g_main_iteration (TRUE);
849 GDK_THREADS_ENTER ();
852 return !g_main_is_running (main_loops->data);
858 gtk_main_iteration_do (gboolean blocking)
860 GDK_THREADS_LEAVE ();
861 g_main_iteration (blocking);
862 GDK_THREADS_ENTER ();
865 return !g_main_is_running (main_loops->data);
871 gtk_main_do_event (GdkEvent *event)
873 GtkWidget *event_widget;
874 GtkWidget *grab_widget;
875 GtkWindowGroup *window_group;
876 GdkEvent *next_event;
879 /* If there are any events pending then get the next one.
881 next_event = gdk_event_peek ();
883 /* Try to compress enter/leave notify events. These event
884 * pairs occur when the mouse is dragged quickly across
885 * a window with many buttons (or through a menu). Instead
886 * of highlighting and de-highlighting each widget that
887 * is crossed it is better to simply de-highlight the widget
888 * which contained the mouse initially and highlight the
889 * widget which ends up containing the mouse.
892 if (((event->type == GDK_ENTER_NOTIFY) ||
893 (event->type == GDK_LEAVE_NOTIFY)) &&
894 ((next_event->type == GDK_ENTER_NOTIFY) ||
895 (next_event->type == GDK_LEAVE_NOTIFY)) &&
896 (next_event->type != event->type) &&
897 (next_event->any.window == event->any.window))
899 /* Throw both the peeked copy and the queued copy away
901 gdk_event_free (next_event);
902 next_event = gdk_event_get ();
903 gdk_event_free (next_event);
909 gdk_event_free (next_event);
911 /* Find the widget which got the event. We store the widget
912 * in the user_data field of GdkWindow's.
913 * Ignore the event if we don't have a widget for it, except
914 * for GDK_PROPERTY_NOTIFY events which are handled specialy.
915 * Though this happens rarely, bogus events can occour
916 * for e.g. destroyed GdkWindows.
918 event_widget = gtk_get_event_widget (event);
921 /* To handle selection INCR transactions, we select
922 * PropertyNotify events on the requestor window and create
923 * a corresponding (fake) GdkWindow so that events get
924 * here. There won't be a widget though, so we have to handle
927 if (event->type == GDK_PROPERTY_NOTIFY)
928 gtk_selection_incr_event (event->any.window,
930 else if (event->type == GDK_SETTING)
931 _gtk_settings_handle_event (&event->setting);
936 /* Push the event onto a stack of current events for
937 * gtk_current_event_get().
939 current_events = g_list_prepend (current_events, event);
941 window_group = gtk_main_get_window_group (event_widget);
943 /* If there is a grab in effect...
945 if (window_group->grabs)
947 grab_widget = window_group->grabs->data;
949 /* If the grab widget is an ancestor of the event widget
950 * then we send the event to the original event widget.
951 * This is the key to implementing modality.
953 if (GTK_WIDGET_IS_SENSITIVE (event_widget) &&
954 gtk_widget_is_ancestor (event_widget, grab_widget))
955 grab_widget = event_widget;
959 grab_widget = event_widget;
962 /* Not all events get sent to the grabbing widget.
963 * The delete, destroy, expose, focus change and resize
964 * events still get sent to the event widget because
965 * 1) these events have no meaning for the grabbing widget
966 * and 2) redirecting these events to the grabbing widget
967 * could cause the display to be messed up.
969 * Drag events are also not redirected, since it isn't
970 * clear what the semantics of that would be.
978 gtk_widget_ref (event_widget);
979 if ((!window_group->grabs || gtk_widget_get_toplevel (window_group->grabs->data) == event_widget) &&
980 !gtk_widget_event (event_widget, event))
981 gtk_widget_destroy (event_widget);
982 gtk_widget_unref (event_widget);
986 /* Unexpected GDK_DESTROY from the outside, ignore for
987 * child windows, handle like a GDK_DELETE for toplevels
989 if (!event_widget->parent)
991 gtk_widget_ref (event_widget);
992 if (!gtk_widget_event (event_widget, event) &&
993 GTK_WIDGET_REALIZED (event_widget))
994 gtk_widget_destroy (event_widget);
995 gtk_widget_unref (event_widget);
1000 if (event->any.window && GTK_WIDGET_DOUBLE_BUFFERED (event_widget))
1002 gdk_window_begin_paint_region (event->any.window, event->expose.region);
1003 gtk_widget_send_expose (event_widget, event);
1004 gdk_window_end_paint (event->any.window);
1007 gtk_widget_send_expose (event_widget, event);
1010 case GDK_PROPERTY_NOTIFY:
1012 case GDK_FOCUS_CHANGE:
1016 case GDK_SELECTION_CLEAR:
1017 case GDK_SELECTION_REQUEST:
1018 case GDK_SELECTION_NOTIFY:
1019 case GDK_CLIENT_EVENT:
1020 case GDK_VISIBILITY_NOTIFY:
1021 case GDK_WINDOW_STATE:
1022 gtk_widget_event (event_widget, event);
1026 case GDK_BUTTON_PRESS:
1027 case GDK_2BUTTON_PRESS:
1028 case GDK_3BUTTON_PRESS:
1029 gtk_propagate_event (grab_widget, event);
1033 case GDK_KEY_RELEASE:
1036 if (gtk_invoke_key_snoopers (grab_widget, event))
1039 /* else fall through */
1040 case GDK_MOTION_NOTIFY:
1041 case GDK_BUTTON_RELEASE:
1042 case GDK_PROXIMITY_IN:
1043 case GDK_PROXIMITY_OUT:
1044 gtk_propagate_event (grab_widget, event);
1047 case GDK_ENTER_NOTIFY:
1048 if (GTK_WIDGET_IS_SENSITIVE (grab_widget))
1050 gtk_widget_event (grab_widget, event);
1051 if (event_widget == grab_widget)
1052 GTK_PRIVATE_SET_FLAG (event_widget, GTK_LEAVE_PENDING);
1056 case GDK_LEAVE_NOTIFY:
1057 if (GTK_WIDGET_LEAVE_PENDING (event_widget))
1059 GTK_PRIVATE_UNSET_FLAG (event_widget, GTK_LEAVE_PENDING);
1060 gtk_widget_event (event_widget, event);
1062 else if (GTK_WIDGET_IS_SENSITIVE (grab_widget))
1063 gtk_widget_event (grab_widget, event);
1066 case GDK_DRAG_STATUS:
1067 case GDK_DROP_FINISHED:
1068 _gtk_drag_source_handle_event (event_widget, event);
1070 case GDK_DRAG_ENTER:
1071 case GDK_DRAG_LEAVE:
1072 case GDK_DRAG_MOTION:
1073 case GDK_DROP_START:
1074 _gtk_drag_dest_handle_event (event_widget, event);
1077 g_assert_not_reached ();
1081 tmp_list = current_events;
1082 current_events = g_list_remove_link (current_events, tmp_list);
1083 g_list_free_1 (tmp_list);
1098 static GtkWindowGroup *
1099 gtk_main_get_window_group (GtkWidget *widget)
1101 GtkWidget *toplevel = NULL;
1104 toplevel = gtk_widget_get_toplevel (widget);
1106 if (toplevel && GTK_IS_WINDOW (toplevel))
1107 return _gtk_window_get_group (GTK_WINDOW (toplevel));
1109 return _gtk_window_get_group (NULL);
1114 gboolean was_grabbed;
1115 GtkWidget *grab_widget;
1119 gtk_grab_notify_foreach (GtkWidget *child,
1123 GrabNotifyInfo *info = data;
1125 if (child != info->grab_widget)
1127 g_object_ref (G_OBJECT (child));
1129 gtk_signal_emit_by_name (GTK_OBJECT (child), "grab_notify", info->was_grabbed);
1131 if (GTK_IS_CONTAINER (child))
1132 gtk_container_foreach (GTK_CONTAINER (child), gtk_grab_notify_foreach, info);
1134 g_object_unref (G_OBJECT (child));
1139 gtk_grab_notify (GtkWindowGroup *group,
1140 GtkWidget *grab_widget,
1141 gboolean was_grabbed)
1144 GrabNotifyInfo info;
1146 info.grab_widget = grab_widget;
1147 info.was_grabbed = was_grabbed;
1149 g_object_ref (group);
1150 g_object_ref (grab_widget);
1152 toplevels = gtk_window_list_toplevels ();
1153 g_list_foreach (toplevels, (GFunc)g_object_ref, NULL);
1157 GtkWindow *toplevel = toplevels->data;
1158 toplevels = g_list_delete_link (toplevels, toplevels);
1160 if (group == toplevel->group)
1161 gtk_container_foreach (GTK_CONTAINER (toplevel), gtk_grab_notify_foreach, &info);
1162 g_object_unref (toplevel);
1165 g_object_unref (group);
1166 g_object_unref (grab_widget);
1170 gtk_grab_add (GtkWidget *widget)
1172 GtkWindowGroup *group;
1173 gboolean was_grabbed;
1175 g_return_if_fail (widget != NULL);
1177 if (!GTK_WIDGET_HAS_GRAB (widget) && GTK_WIDGET_IS_SENSITIVE (widget))
1179 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_GRAB);
1181 group = gtk_main_get_window_group (widget);
1183 was_grabbed = (group->grabs != NULL);
1185 gtk_widget_ref (widget);
1186 group->grabs = g_slist_prepend (group->grabs, widget);
1189 gtk_grab_notify (group, widget, FALSE);
1194 gtk_grab_get_current (void)
1196 GtkWindowGroup *group;
1198 group = gtk_main_get_window_group (NULL);
1201 return GTK_WIDGET (group->grabs->data);
1206 gtk_grab_remove (GtkWidget *widget)
1208 GtkWindowGroup *group;
1210 g_return_if_fail (widget != NULL);
1212 if (GTK_WIDGET_HAS_GRAB (widget))
1214 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_GRAB);
1216 group = gtk_main_get_window_group (widget);
1217 group->grabs = g_slist_remove (group->grabs, widget);
1219 gtk_widget_unref (widget);
1222 gtk_grab_notify (group, widget, TRUE);
1227 gtk_init_add (GtkFunction function,
1230 GtkInitFunction *init;
1232 init = g_new (GtkInitFunction, 1);
1233 init->function = function;
1236 init_functions = g_list_prepend (init_functions, init);
1240 gtk_key_snooper_install (GtkKeySnoopFunc snooper,
1243 GtkKeySnooperData *data;
1244 static guint snooper_id = 1;
1246 g_return_val_if_fail (snooper != NULL, 0);
1248 data = g_new (GtkKeySnooperData, 1);
1249 data->func = snooper;
1250 data->func_data = func_data;
1251 data->id = snooper_id++;
1252 key_snoopers = g_slist_prepend (key_snoopers, data);
1258 gtk_key_snooper_remove (guint snooper_id)
1260 GtkKeySnooperData *data = NULL;
1263 slist = key_snoopers;
1267 if (data->id == snooper_id)
1270 slist = slist->next;
1274 key_snoopers = g_slist_remove (key_snoopers, data);
1278 gtk_invoke_key_snoopers (GtkWidget *grab_widget,
1282 gint return_val = FALSE;
1284 slist = key_snoopers;
1285 while (slist && !return_val)
1287 GtkKeySnooperData *data;
1290 slist = slist->next;
1291 return_val = (*data->func) (grab_widget, (GdkEventKey*) event, data->func_data);
1298 gtk_quit_add_full (guint main_level,
1299 GtkFunction function,
1300 GtkCallbackMarshal marshal,
1302 GtkDestroyNotify destroy)
1304 static guint quit_id = 1;
1305 GtkQuitFunction *quitf;
1307 g_return_val_if_fail ((function != NULL) || (marshal != NULL), 0);
1309 if (!quit_mem_chunk)
1310 quit_mem_chunk = g_mem_chunk_new ("quit mem chunk", sizeof (GtkQuitFunction),
1311 512, G_ALLOC_AND_FREE);
1313 quitf = g_chunk_new (GtkQuitFunction, quit_mem_chunk);
1315 quitf->id = quit_id++;
1316 quitf->main_level = main_level;
1317 quitf->function = function;
1318 quitf->marshal = marshal;
1320 quitf->destroy = destroy;
1322 quit_functions = g_list_prepend (quit_functions, quitf);
1328 gtk_quit_destroy (GtkQuitFunction *quitf)
1331 quitf->destroy (quitf->data);
1332 g_mem_chunk_free (quit_mem_chunk, quitf);
1336 gtk_quit_destructor (GtkObject **object_p)
1339 gtk_object_destroy (*object_p);
1346 gtk_quit_add_destroy (guint main_level,
1349 GtkObject **object_p;
1351 g_return_if_fail (main_level > 0);
1352 g_return_if_fail (GTK_IS_OBJECT (object));
1354 object_p = g_new (GtkObject*, 1);
1356 gtk_signal_connect (object,
1358 GTK_SIGNAL_FUNC (gtk_widget_destroyed),
1360 gtk_quit_add (main_level, (GtkFunction) gtk_quit_destructor, object_p);
1364 gtk_quit_add (guint main_level,
1365 GtkFunction function,
1368 return gtk_quit_add_full (main_level, function, NULL, data, NULL);
1372 gtk_quit_remove (guint id)
1374 GtkQuitFunction *quitf;
1377 tmp_list = quit_functions;
1380 quitf = tmp_list->data;
1382 if (quitf->id == id)
1384 quit_functions = g_list_remove_link (quit_functions, tmp_list);
1385 g_list_free (tmp_list);
1386 gtk_quit_destroy (quitf);
1391 tmp_list = tmp_list->next;
1396 gtk_quit_remove_by_data (gpointer data)
1398 GtkQuitFunction *quitf;
1401 tmp_list = quit_functions;
1404 quitf = tmp_list->data;
1406 if (quitf->data == data)
1408 quit_functions = g_list_remove_link (quit_functions, tmp_list);
1409 g_list_free (tmp_list);
1410 gtk_quit_destroy (quitf);
1415 tmp_list = tmp_list->next;
1420 gtk_timeout_add_full (guint32 interval,
1421 GtkFunction function,
1422 GtkCallbackMarshal marshal,
1424 GtkDestroyNotify destroy)
1428 GtkClosure *closure;
1430 closure = g_new (GtkClosure, 1);
1431 closure->marshal = marshal;
1432 closure->data = data;
1433 closure->destroy = destroy;
1435 return g_timeout_add_full (0, interval,
1436 gtk_invoke_idle_timeout,
1438 gtk_destroy_closure);
1441 return g_timeout_add_full (0, interval, function, data, destroy);
1445 gtk_timeout_add (guint32 interval,
1446 GtkFunction function,
1449 return g_timeout_add_full (0, interval, function, data, NULL);
1453 gtk_timeout_remove (guint tag)
1455 g_source_remove (tag);
1459 gtk_idle_add_full (gint priority,
1460 GtkFunction function,
1461 GtkCallbackMarshal marshal,
1463 GtkDestroyNotify destroy)
1467 GtkClosure *closure;
1469 closure = g_new (GtkClosure, 1);
1470 closure->marshal = marshal;
1471 closure->data = data;
1472 closure->destroy = destroy;
1474 return g_idle_add_full (priority,
1475 gtk_invoke_idle_timeout,
1477 gtk_destroy_closure);
1480 return g_idle_add_full (priority, function, data, destroy);
1484 gtk_idle_add (GtkFunction function,
1487 return g_idle_add_full (GTK_PRIORITY_DEFAULT, function, data, NULL);
1491 gtk_idle_add_priority (gint priority,
1492 GtkFunction function,
1495 return g_idle_add_full (priority, function, data, NULL);
1499 gtk_idle_remove (guint tag)
1501 g_source_remove (tag);
1505 gtk_idle_remove_by_data (gpointer data)
1507 if (!g_idle_remove_by_data (data))
1508 g_warning ("gtk_idle_remove_by_data(%p): no such idle", data);
1512 gtk_input_add_full (gint source,
1513 GdkInputCondition condition,
1514 GdkInputFunction function,
1515 GtkCallbackMarshal marshal,
1517 GtkDestroyNotify destroy)
1521 GtkClosure *closure;
1523 closure = g_new (GtkClosure, 1);
1524 closure->marshal = marshal;
1525 closure->data = data;
1526 closure->destroy = destroy;
1528 return gdk_input_add_full (source,
1530 (GdkInputFunction) gtk_invoke_input,
1532 (GdkDestroyNotify) gtk_destroy_closure);
1535 return gdk_input_add_full (source, condition, function, data, destroy);
1539 gtk_input_remove (guint tag)
1541 g_source_remove (tag);
1545 gtk_destroy_closure (gpointer data)
1547 GtkClosure *closure = data;
1549 if (closure->destroy)
1550 (closure->destroy) (closure->data);
1555 gtk_invoke_idle_timeout (gpointer data)
1557 GtkClosure *closure = data;
1560 gint ret_val = FALSE;
1561 args[0].name = NULL;
1562 args[0].type = GTK_TYPE_BOOL;
1563 args[0].d.pointer_data = &ret_val;
1564 closure->marshal (NULL, closure->data, 0, args);
1569 gtk_invoke_input (gpointer data,
1571 GdkInputCondition condition)
1573 GtkClosure *closure = data;
1576 args[0].type = GTK_TYPE_INT;
1577 args[0].name = NULL;
1578 GTK_VALUE_INT (args[0]) = source;
1579 args[1].type = GDK_TYPE_INPUT_CONDITION;
1580 args[1].name = NULL;
1581 GTK_VALUE_FLAGS (args[1]) = condition;
1582 args[2].type = GTK_TYPE_NONE;
1583 args[2].name = NULL;
1585 closure->marshal (NULL, closure->data, 2, args);
1589 * gtk_get_current_event:
1591 * Obtains a copy of the event currently being processed by GTK+. For
1592 * example, if you get a "clicked" signal from #GtkButton, the current
1593 * event will be the #GdkEventButton that triggered the "clicked"
1594 * signal. The returned event must be freed with gdk_event_free().
1595 * If there is no current event, the function returns %NULL.
1597 * Return value: a copy of the current event, or %NULL if no current event.
1600 gtk_get_current_event (void)
1603 return gdk_event_copy (current_events->data);
1609 * gtk_get_current_event_time:
1611 * If there is a current event and it has a timestamp, return that
1612 * timestamp, otherwise return %GDK_CURRENT_TIME.
1614 * Return value: the timestamp from the current event, or %GDK_CURRENT_TIME.
1617 gtk_get_current_event_time (void)
1620 return gdk_event_get_time (current_events->data);
1622 return GDK_CURRENT_TIME;
1626 * gtk_get_current_event_state:
1627 * @state: a location to store the state of the current event
1629 * If there is a current event and it has a state field, place
1630 * that state field in @state and return %TRUE, otherwise return
1633 * Return value: %TRUE if there was a current event and it had a state field
1636 gtk_get_current_event_state (GdkModifierType *state)
1638 g_return_val_if_fail (state != NULL, FALSE);
1641 return gdk_event_get_state (current_events->data, state);
1650 * gtk_get_event_widget:
1651 * @event: a #GdkEvent
1653 * If @event is %NULL or the event was not associated with any widget,
1654 * returns %NULL, otherwise returns the widget that received the event
1657 * Return value: the widget that originally received @event, or %NULL
1660 gtk_get_event_widget (GdkEvent *event)
1665 if (event && event->any.window)
1666 gdk_window_get_user_data (event->any.window, (void**) &widget);
1672 gtk_exit_func (void)
1674 if (gtk_initialized)
1676 gtk_initialized = FALSE;
1682 gtk_quit_invoke_function (GtkQuitFunction *quitf)
1684 if (!quitf->marshal)
1685 return quitf->function (quitf->data);
1689 gint ret_val = FALSE;
1691 args[0].name = NULL;
1692 args[0].type = GTK_TYPE_BOOL;
1693 args[0].d.pointer_data = &ret_val;
1694 ((GtkCallbackMarshal) quitf->marshal) (NULL,
1702 * gtk_propagate_event:
1703 * @widget: a #GtkWidget
1706 * Sends an event to a widget, propagating the event to parent widgets
1707 * if the event remains unhandled. Events received by GTK+ from GDK
1708 * normally begin in gtk_main_do_event(). Depending on the type of
1709 * event, existence of modal dialogs, grabs, etc., the event may be
1710 * propagated; if so, this function is used. gtk_propagate_event()
1711 * calls gtk_widget_event() on each widget it decides to send the
1712 * event to. So gtk_widget_event() is the lowest-level function; it
1713 * simply emits the "event" and possibly an event-specific signal on a
1714 * widget. gtk_propagate_event() is a bit higher-level, and
1715 * gtk_main_do_event() is the highest level.
1717 * All that said, you most likely don't want to use any of these
1718 * functions; synthesizing events is rarely needed. Consider asking on
1719 * the mailing list for better ways to achieve your goals. For
1720 * example, use gdk_window_invalidate_rect() or
1721 * gtk_widget_queue_draw() instead of making up expose events.
1725 gtk_propagate_event (GtkWidget *widget,
1730 g_return_if_fail (GTK_IS_WIDGET (widget));
1731 g_return_if_fail (event != NULL);
1733 handled_event = FALSE;
1735 gtk_widget_ref (widget);
1737 if ((event->type == GDK_KEY_PRESS) ||
1738 (event->type == GDK_KEY_RELEASE))
1740 /* Only send key events within Window widgets to the Window
1741 * The Window widget will in turn pass the
1742 * key event on to the currently focused widget
1747 window = gtk_widget_get_toplevel (widget);
1748 if (window && GTK_IS_WINDOW (window))
1750 /* If there is a grab within the window, give the grab widget
1751 * a first crack at the key event
1753 if (widget != window && GTK_WIDGET_HAS_GRAB (widget))
1754 handled_event = gtk_widget_event (widget, event);
1758 window = gtk_widget_get_toplevel (widget);
1759 if (window && GTK_IS_WINDOW (window))
1761 if (GTK_WIDGET_IS_SENSITIVE (window))
1762 gtk_widget_event (window, event);
1766 handled_event = TRUE; /* don't send to widget */
1770 /* Other events get propagated up the widget tree
1771 * so that parents can see the button and motion
1772 * events of the children.
1780 handled_event = !GTK_WIDGET_IS_SENSITIVE (widget) || gtk_widget_event (widget, event);
1781 tmp = widget->parent;
1782 gtk_widget_unref (widget);
1786 if (!handled_event && widget)
1787 gtk_widget_ref (widget);
1793 gtk_widget_unref (widget);
1798 gtk_error (gchar *str)
1804 gtk_warning (gchar *str)
1810 gtk_message (gchar *str)
1816 gtk_print (gchar *str)
1818 static GtkWidget *window = NULL;
1819 static GtkWidget *text;
1820 static int level = 0;
1824 GtkWidget *hscrollbar;
1825 GtkWidget *vscrollbar;
1826 GtkWidget *separator;
1831 fputs (str, stdout);
1838 window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
1840 gtk_signal_connect (GTK_OBJECT (window), "destroy",
1841 (GtkSignalFunc) gtk_widget_destroyed,
1844 gtk_window_set_title (GTK_WINDOW (window), "Messages");
1846 box1 = gtk_vbox_new (FALSE, 0);
1847 gtk_container_add (GTK_CONTAINER (window), box1);
1848 gtk_widget_show (box1);
1851 box2 = gtk_vbox_new (FALSE, 10);
1852 gtk_container_set_border_width (GTK_CONTAINER (box2), 10);
1853 gtk_box_pack_start (GTK_BOX (box1), box2, TRUE, TRUE, 0);
1854 gtk_widget_show (box2);
1857 table = gtk_table_new (2, 2, FALSE);
1858 gtk_table_set_row_spacing (GTK_TABLE (table), 0, 2);
1859 gtk_table_set_col_spacing (GTK_TABLE (table), 0, 2);
1860 gtk_box_pack_start (GTK_BOX (box2), table, TRUE, TRUE, 0);
1861 gtk_widget_show (table);
1863 text = gtk_text_new (NULL, NULL);
1864 gtk_text_set_editable (GTK_TEXT (text), FALSE);
1865 gtk_table_attach_defaults (GTK_TABLE (table), text, 0, 1, 0, 1);
1866 gtk_widget_show (text);
1867 gtk_widget_realize (text);
1869 hscrollbar = gtk_hscrollbar_new (GTK_TEXT (text)->hadj);
1870 gtk_table_attach (GTK_TABLE (table), hscrollbar, 0, 1, 1, 2,
1871 GTK_EXPAND | GTK_FILL, GTK_FILL, 0, 0);
1872 gtk_widget_show (hscrollbar);
1874 vscrollbar = gtk_vscrollbar_new (GTK_TEXT (text)->vadj);
1875 gtk_table_attach (GTK_TABLE (table), vscrollbar, 1, 2, 0, 1,
1876 GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
1877 gtk_widget_show (vscrollbar);
1879 separator = gtk_hseparator_new ();
1880 gtk_box_pack_start (GTK_BOX (box1), separator, FALSE, TRUE, 0);
1881 gtk_widget_show (separator);
1884 box2 = gtk_vbox_new (FALSE, 10);
1885 gtk_container_set_border_width (GTK_CONTAINER (box2), 10);
1886 gtk_box_pack_start (GTK_BOX (box1), box2, FALSE, TRUE, 0);
1887 gtk_widget_show (box2);
1890 button = gtk_button_new_with_label ("close");
1891 gtk_signal_connect_object (GTK_OBJECT (button), "clicked",
1892 (GtkSignalFunc) gtk_widget_hide,
1893 GTK_OBJECT (window));
1894 gtk_box_pack_start (GTK_BOX (box2), button, TRUE, TRUE, 0);
1895 GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);
1896 gtk_widget_grab_default (button);
1897 gtk_widget_show (button);
1901 gtk_text_insert (GTK_TEXT (text), NULL, NULL, NULL, str, -1);
1904 if (!GTK_WIDGET_VISIBLE (window))
1905 gtk_widget_show (window);
1910 _gtk_boolean_handled_accumulator (GSignalInvocationHint *ihint,
1911 GValue *return_accu,
1912 const GValue *handler_return,
1915 gboolean continue_emission;
1916 gboolean signal_handled;
1918 signal_handled = g_value_get_boolean (handler_return);
1919 g_value_set_boolean (return_accu, signal_handled);
1920 continue_emission = !signal_handled;
1922 return continue_emission;