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
41 #include <sys/types.h> /* For uid_t, gid_t */
49 #include <pango/pango-utils.h> /* For pango_split_file_list */
51 #include "gtkaccelmap.h"
53 #include "gtkversion.h"
56 #include "gtkselection.h"
57 #include "gtksettings.h"
58 #include "gtksignal.h"
59 #include "gtkwidget.h"
60 #include "gtkwindow.h"
61 #include "gtkprivate.h"
66 /* Private type definitions
68 typedef struct _GtkInitFunction GtkInitFunction;
69 typedef struct _GtkQuitFunction GtkQuitFunction;
70 typedef struct _GtkClosure GtkClosure;
71 typedef struct _GtkKeySnooperData GtkKeySnooperData;
73 struct _GtkInitFunction
79 struct _GtkQuitFunction
83 GtkCallbackMarshal marshal;
86 GtkDestroyNotify destroy;
91 GtkCallbackMarshal marshal;
93 GtkDestroyNotify destroy;
96 struct _GtkKeySnooperData
103 static gint gtk_quit_invoke_function (GtkQuitFunction *quitf);
104 static void gtk_quit_destroy (GtkQuitFunction *quitf);
105 static gint gtk_invoke_key_snoopers (GtkWidget *grab_widget,
108 static void gtk_destroy_closure (gpointer data);
109 static gboolean gtk_invoke_idle_timeout (gpointer data);
110 static void gtk_invoke_input (gpointer data,
112 GdkInputCondition condition);
115 static void gtk_error (gchar *str);
116 static void gtk_warning (gchar *str);
117 static void gtk_message (gchar *str);
118 static void gtk_print (gchar *str);
121 static GtkWindowGroup *gtk_main_get_window_group (GtkWidget *widget);
123 const guint gtk_major_version = GTK_MAJOR_VERSION;
124 const guint gtk_minor_version = GTK_MINOR_VERSION;
125 const guint gtk_micro_version = GTK_MICRO_VERSION;
126 const guint gtk_binary_age = GTK_BINARY_AGE;
127 const guint gtk_interface_age = GTK_INTERFACE_AGE;
129 static guint gtk_main_loop_level = 0;
130 static gint gtk_initialized = FALSE;
131 static GList *current_events = NULL;
133 static GSList *main_loops = NULL; /* stack of currently executing main loops */
135 static GList *init_functions = NULL; /* A list of init functions.
137 static GList *quit_functions = NULL; /* A list of quit functions.
139 static GMemChunk *quit_mem_chunk = NULL;
141 static GSList *key_snoopers = NULL;
143 static GdkVisual *gtk_visual; /* The visual to be used in creating new
146 static GdkColormap *gtk_colormap; /* The colormap to be used in creating new
150 guint gtk_debug_flags = 0; /* Global GTK debug flag */
152 #ifdef G_ENABLE_DEBUG
153 static const GDebugKey gtk_debug_keys[] = {
154 {"misc", GTK_DEBUG_MISC},
155 {"plugsocket", GTK_DEBUG_PLUGSOCKET},
156 {"text", GTK_DEBUG_TEXT},
157 {"tree", GTK_DEBUG_TREE},
158 {"updates", GTK_DEBUG_UPDATES}
161 static const guint gtk_ndebug_keys = sizeof (gtk_debug_keys) / sizeof (GDebugKey);
163 #endif /* G_ENABLE_DEBUG */
166 gtk_check_version (guint required_major,
167 guint required_minor,
168 guint required_micro)
170 if (required_major > GTK_MAJOR_VERSION)
171 return "Gtk+ version too old (major mismatch)";
172 if (required_major < GTK_MAJOR_VERSION)
173 return "Gtk+ version too new (major mismatch)";
174 if (required_minor > GTK_MINOR_VERSION)
175 return "Gtk+ version too old (minor mismatch)";
176 if (required_minor < GTK_MINOR_VERSION)
177 return "Gtk+ version too new (minor mismatch)";
178 if (required_micro < GTK_MICRO_VERSION - GTK_BINARY_AGE)
179 return "Gtk+ version too new (micro mismatch)";
180 if (required_micro > GTK_MICRO_VERSION)
181 return "Gtk+ version too old (micro mismatch)";
185 #undef gtk_init_check
187 /* This checks to see if the process is running suid or sgid
188 * at the current time. If so, we don't allow GTK+ to be initialized.
189 * This is meant to be a mild check - we only error out if we
190 * can prove the programmer is doing something wrong, not if
191 * they could be doing something wrong. For this reason, we
192 * don't use issetugid() on BSD or prctl (PR_GET_DUMPABLE).
197 /* this isn't at all relevant on MS Windows and doesn't compile ... --hb */
199 uid_t ruid, euid, suid; /* Real, effective and saved user ID's */
200 gid_t rgid, egid, sgid; /* Real, effective and saved group ID's */
202 #ifdef HAVE_GETRESUID
203 /* These aren't in the header files, so we prototype them here.
205 int getresuid(uid_t *ruid, uid_t *euid, uid_t *suid);
206 int getresgid(gid_t *rgid, gid_t *egid, gid_t *sgid);
208 if (getresuid (&ruid, &euid, &suid) != 0 ||
209 getresgid (&rgid, &egid, &sgid) != 0)
210 #endif /* HAVE_GETRESUID */
212 suid = ruid = getuid ();
213 sgid = rgid = getgid ();
218 if (ruid != euid || ruid != suid ||
219 rgid != egid || rgid != sgid)
221 g_warning ("This process is currently running setuid or setgid.\n"
222 "This is not a supported use of GTK+. You must create a helper\n"
223 "program instead. For further details, see:\n\n"
224 " http://www.gtk.org/setuid.html\n\n"
225 "Refusing to initialize GTK+.");
234 G_WIN32_DLLMAIN_FOR_DLL_NAME(static, dll_name)
237 _gtk_get_libdir (void)
239 static char *gtk_libdir = NULL;
240 if (gtk_libdir == NULL)
241 gtk_libdir = g_win32_get_package_installation_subdirectory
242 (GETTEXT_PACKAGE, dll_name, "lib");
248 _gtk_get_localedir (void)
250 static char *gtk_localedir = NULL;
251 if (gtk_localedir == NULL)
252 gtk_localedir = g_win32_get_package_installation_subdirectory
253 (GETTEXT_PACKAGE, dll_name, "lib\\locale");
255 return gtk_localedir;
259 _gtk_get_sysconfdir (void)
261 static char *gtk_sysconfdir = NULL;
262 if (gtk_sysconfdir == NULL)
263 gtk_sysconfdir = g_win32_get_package_installation_subdirectory
264 (GETTEXT_PACKAGE, dll_name, "etc");
266 return gtk_sysconfdir;
270 _gtk_get_data_prefix (void)
272 static char *gtk_data_prefix = NULL;
273 if (gtk_data_prefix == NULL)
274 gtk_data_prefix = g_win32_get_package_installation_directory
275 (GETTEXT_PACKAGE, dll_name);
277 return gtk_data_prefix;
280 #endif /* G_OS_WIN32 */
283 get_module_path (void)
285 const gchar *module_path_env = g_getenv ("GTK_MODULE_PATH");
286 const gchar *exe_prefix = g_getenv ("GTK_EXE_PREFIX");
292 default_dir = g_build_filename (exe_prefix, "lib", "gtk-2.0", "modules", NULL);
294 default_dir = g_build_filename (GTK_LIBDIR, "gtk-2.0", "modules", NULL);
296 module_path = g_strconcat (module_path_env ? module_path_env : "",
297 module_path_env ? G_SEARCHPATH_SEPARATOR_S : "",
300 result = pango_split_file_list (module_path);
302 g_free (default_dir);
303 g_free (module_path);
309 find_module (gchar **module_path,
316 if (g_path_is_absolute (name))
317 return g_module_open (name, G_MODULE_BIND_LAZY);
319 for (i = 0; module_path[i]; i++)
321 gchar *version_directory;
323 version_directory = g_build_filename (module_path[i], GTK_BINARY_VERSION, NULL);
324 module_name = g_module_build_path (version_directory, name);
325 g_free (version_directory);
327 if (g_file_test (module_name, G_FILE_TEST_EXISTS))
329 module = g_module_open (module_name, G_MODULE_BIND_LAZY);
330 g_free (module_name);
334 g_free (module_name);
336 module_name = g_module_build_path (module_path[i], name);
338 if (g_file_test (module_name, G_FILE_TEST_EXISTS))
340 module = g_module_open (module_name, G_MODULE_BIND_LAZY);
341 g_free (module_name);
345 g_free (module_name);
348 /* As last resort, try loading without an absolute path (using system
351 module_name = g_module_build_path (NULL, name);
352 module = g_module_open (module_name, G_MODULE_BIND_LAZY);
359 load_module (GSList *gtk_modules,
363 GtkModuleInitFunc modinit_func = NULL;
364 GModule *module = NULL;
366 if (g_module_supported ())
368 module = find_module (module_path, name);
370 g_module_symbol (module, "gtk_module_init", (gpointer *) &modinit_func) &&
373 if (!g_slist_find (gtk_modules, modinit_func))
375 g_module_make_resident (module);
376 gtk_modules = g_slist_prepend (gtk_modules, modinit_func);
380 g_module_close (module);
387 g_message ("Failed to load module \"%s\": %s",
388 module ? g_module_name (module) : name,
391 g_module_close (module);
398 load_modules (const char *module_str)
400 gchar **module_path = get_module_path ();
401 gchar **module_names = pango_split_file_list (module_str);
402 GSList *gtk_modules = NULL;
405 for (i = 0; module_names[i]; i++)
406 gtk_modules = load_module (gtk_modules, module_path, module_names[i]);
408 gtk_modules = g_slist_reverse (gtk_modules);
410 g_strfreev (module_names);
411 g_strfreev (module_path);
416 static gboolean do_setlocale = TRUE;
419 * gtk_disable_setlocale:
421 * Prevents gtk_init() and gtk_init_check() from automatically
422 * calling <literal>setlocale (LC_ALL, "")</literal>. You would
423 * want to use this function if you wanted to set the locale for
424 * your program to something other than the user's locale, or if
425 * you wanted to set different values for different locale categories.
427 * Most programs should not need to call this function.
430 gtk_disable_setlocale (void)
433 g_warning ("gtk_disable_setlocale() must be called before gtk_init()");
435 do_setlocale = FALSE;
439 gtk_init_check (int *argc,
442 GString *gtk_modules_string = NULL;
443 GSList *gtk_modules = NULL;
445 const gchar *env_string;
450 if (!check_setugid ())
454 g_set_error_handler (gtk_error);
455 g_set_warning_handler (gtk_warning);
456 g_set_message_handler (gtk_message);
457 g_set_print_handler (gtk_print);
462 if (!setlocale (LC_ALL, ""))
463 g_warning ("Locale not supported by C library.\n\tUsing the fallback 'C' locale.");
466 /* Initialize "gdk". We pass along the 'argc' and 'argv'
467 * parameters as they contain information that GDK uses
469 if (!gdk_init_check (argc, argv))
472 gdk_event_handler_set ((GdkEventFunc)gtk_main_do_event, NULL, NULL);
474 #ifdef G_ENABLE_DEBUG
475 env_string = g_getenv ("GTK_DEBUG");
476 if (env_string != NULL)
478 gtk_debug_flags = g_parse_debug_string (env_string,
483 #endif /* G_ENABLE_DEBUG */
485 env_string = g_getenv ("GTK_MODULES");
487 gtk_modules_string = g_string_new (env_string);
493 for (i = 1; i < *argc;)
495 if (strcmp ("--gtk-module", (*argv)[i]) == 0 ||
496 strncmp ("--gtk-module=", (*argv)[i], 13) == 0)
498 gchar *module_name = (*argv)[i] + 12;
500 if (*module_name == '=')
502 else if (i + 1 < *argc)
506 module_name = (*argv)[i];
510 if (module_name && *module_name)
512 if (gtk_modules_string)
513 g_string_append_c (gtk_modules_string, G_SEARCHPATH_SEPARATOR);
515 gtk_modules_string = g_string_new (NULL);
517 g_string_append (gtk_modules_string, module_name);
520 else if (strcmp ("--g-fatal-warnings", (*argv)[i]) == 0)
522 GLogLevelFlags fatal_mask;
524 fatal_mask = g_log_set_always_fatal (G_LOG_FATAL_MASK);
525 fatal_mask |= G_LOG_LEVEL_WARNING | G_LOG_LEVEL_CRITICAL;
526 g_log_set_always_fatal (fatal_mask);
529 #ifdef G_ENABLE_DEBUG
530 else if ((strcmp ("--gtk-debug", (*argv)[i]) == 0) ||
531 (strncmp ("--gtk-debug=", (*argv)[i], 12) == 0))
533 gchar *equal_pos = strchr ((*argv)[i], '=');
535 if (equal_pos != NULL)
537 gtk_debug_flags |= g_parse_debug_string (equal_pos+1,
541 else if ((i + 1) < *argc && (*argv)[i + 1])
543 gtk_debug_flags |= g_parse_debug_string ((*argv)[i+1],
551 else if ((strcmp ("--gtk-no-debug", (*argv)[i]) == 0) ||
552 (strncmp ("--gtk-no-debug=", (*argv)[i], 15) == 0))
554 gchar *equal_pos = strchr ((*argv)[i], '=');
556 if (equal_pos != NULL)
558 gtk_debug_flags &= ~g_parse_debug_string (equal_pos+1,
562 else if ((i + 1) < *argc && (*argv)[i + 1])
564 gtk_debug_flags &= ~g_parse_debug_string ((*argv)[i+1],
572 #endif /* G_ENABLE_DEBUG */
576 for (i = 1; i < *argc; i++)
578 for (k = i; k < *argc; k++)
579 if ((*argv)[k] != NULL)
585 for (j = i + k; j < *argc; j++)
586 (*argv)[j-k] = (*argv)[j];
592 if (gtk_debug_flags & GTK_DEBUG_UPDATES)
593 gdk_window_set_debug_updates (TRUE);
595 /* load gtk modules */
596 if (gtk_modules_string)
598 gtk_modules = load_modules (gtk_modules_string->str);
599 g_string_free (gtk_modules_string, TRUE);
603 bindtextdomain (GETTEXT_PACKAGE, GTK_LOCALEDIR);
604 # ifdef HAVE_BIND_TEXTDOMAIN_CODESET
605 bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
610 /* Translate to default:RTL if you want your widgets
611 * to be RTL, otherwise translate to default:LTR.
612 * Do *not* translate it to "predefinito:LTR", if it
613 * it isn't default:LTR or default:RTL it will not work
615 char *e = _("default:LTR");
616 if (strcmp (e, "default:RTL")==0) {
617 gtk_widget_set_default_direction (GTK_TEXT_DIR_RTL);
618 } else if (strcmp (e, "default:LTR")) {
619 g_warning ("Whoever translated default:LTR did so wrongly.\n");
623 /* Initialize the default visual and colormap to be
624 * used in creating widgets. (We want to use the system
625 * defaults so as to be nice to the colormap).
627 gtk_visual = gdk_visual_get_system ();
628 gtk_colormap = gdk_colormap_get_system ();
631 _gtk_accel_map_init ();
634 /* Set the 'initialized' flag.
636 gtk_initialized = TRUE;
638 /* initialize gtk modules
640 for (slist = gtk_modules; slist; slist = slist->next)
644 GtkModuleInitFunc modinit;
646 modinit = slist->data;
647 modinit (argc, argv);
650 g_slist_free (gtk_modules);
658 gtk_init (int *argc, char ***argv)
660 if (!gtk_init_check (argc, argv))
662 g_warning ("cannot open display: %s", gdk_get_display ());
670 check_sizeof_GtkWindow (size_t sizeof_GtkWindow)
672 if (sizeof_GtkWindow != sizeof (GtkWindow))
673 g_error ("Incompatible build!\n"
674 "The code using GTK+ thinks GtkWindow is of different\n"
675 "size than it actually is in this build of GTK+.\n"
676 "On Windows, this probably means that you have compiled\n"
677 "your code with gcc without the -fnative-struct switch.");
680 /* These two functions might get more checks added later, thus pass
681 * in the number of extra args.
684 gtk_init_abi_check (int *argc, char ***argv, int num_checks, size_t sizeof_GtkWindow)
686 check_sizeof_GtkWindow (sizeof_GtkWindow);
687 gtk_init (argc, argv);
691 gtk_init_check_abi_check (int *argc, char ***argv, int num_checks, size_t sizeof_GtkWindow)
693 check_sizeof_GtkWindow (sizeof_GtkWindow);
694 return gtk_init_check (argc, argv);
700 gtk_exit (gint errorcode)
702 /* Only if "gtk" has been initialized should we de-initialize.
704 gdk_exit (errorcode);
711 * Initializes internationalization support for GTK+. gtk_init()
712 * automatically does this, so there is typically no point
713 * in calling this function.
715 * If you are calling this function because you changed the locale
716 * after GTK+ is was initialized, then calling this function
717 * may help a bit. (Note, however, that changing the locale
718 * after GTK+ is initialized may produce inconsistent results and
719 * is not really supported.)
721 * In detail - sets the current locale according to the
722 * program environment. This is the same as calling the C library function
723 * <literal>setlocale (LC_ALL, "")</literal> but also takes care of the
724 * locale specific setup of the windowing system used by GDK.
726 * Return value: a string corresponding to the locale set, as with the
727 * C library function <function>setlocale()</function>.
730 gtk_set_locale (void)
732 return gdk_set_locale ();
736 * gtk_get_default_language:
738 * Returns the ISO language code for the default language currently in
739 * effect. (Note that this can change over the life of an
740 * application.) The default language is derived from the current
741 * locale. It determines, for example, whether GTK+ uses the
742 * right-to-left or left-to-right text direction.
744 * Return value: the default language as an allocated string, must be freed
747 gtk_get_default_language (void)
750 PangoLanguage *result;
753 lang = g_strdup (setlocale (LC_CTYPE, NULL));
754 p = strchr (lang, '.');
757 p = strchr (lang, '@');
761 result = pango_language_from_string (lang);
772 GtkInitFunction *init;
775 gtk_main_loop_level++;
777 loop = g_main_new (TRUE);
778 main_loops = g_slist_prepend (main_loops, loop);
780 tmp_list = functions = init_functions;
781 init_functions = NULL;
785 init = tmp_list->data;
786 tmp_list = tmp_list->next;
788 (* init->function) (init->data);
791 g_list_free (functions);
793 if (g_main_is_running (main_loops->data))
795 GDK_THREADS_LEAVE ();
797 GDK_THREADS_ENTER ();
803 GList *reinvoke_list = NULL;
804 GtkQuitFunction *quitf;
806 while (quit_functions)
808 quitf = quit_functions->data;
810 tmp_list = quit_functions;
811 quit_functions = g_list_remove_link (quit_functions, quit_functions);
812 g_list_free_1 (tmp_list);
814 if ((quitf->main_level && quitf->main_level != gtk_main_loop_level) ||
815 gtk_quit_invoke_function (quitf))
817 reinvoke_list = g_list_prepend (reinvoke_list, quitf);
821 gtk_quit_destroy (quitf);
828 work = g_list_last (reinvoke_list);
830 quit_functions->prev = work;
831 work->next = quit_functions;
832 quit_functions = work;
838 main_loops = g_slist_remove (main_loops, loop);
840 g_main_destroy (loop);
842 gtk_main_loop_level--;
846 gtk_main_level (void)
848 return gtk_main_loop_level;
854 g_return_if_fail (main_loops != NULL);
856 g_main_quit (main_loops->data);
860 gtk_events_pending (void)
864 GDK_THREADS_LEAVE ();
865 result = g_main_pending ();
866 GDK_THREADS_ENTER ();
872 gtk_main_iteration (void)
874 GDK_THREADS_LEAVE ();
875 g_main_iteration (TRUE);
876 GDK_THREADS_ENTER ();
879 return !g_main_is_running (main_loops->data);
885 gtk_main_iteration_do (gboolean blocking)
887 GDK_THREADS_LEAVE ();
888 g_main_iteration (blocking);
889 GDK_THREADS_ENTER ();
892 return !g_main_is_running (main_loops->data);
898 gtk_main_do_event (GdkEvent *event)
900 GtkWidget *event_widget;
901 GtkWidget *grab_widget;
902 GtkWindowGroup *window_group;
903 GdkEvent *next_event;
906 /* If there are any events pending then get the next one.
908 next_event = gdk_event_peek ();
910 /* Try to compress enter/leave notify events. These event
911 * pairs occur when the mouse is dragged quickly across
912 * a window with many buttons (or through a menu). Instead
913 * of highlighting and de-highlighting each widget that
914 * is crossed it is better to simply de-highlight the widget
915 * which contained the mouse initially and highlight the
916 * widget which ends up containing the mouse.
919 if (((event->type == GDK_ENTER_NOTIFY) ||
920 (event->type == GDK_LEAVE_NOTIFY)) &&
921 ((next_event->type == GDK_ENTER_NOTIFY) ||
922 (next_event->type == GDK_LEAVE_NOTIFY)) &&
923 (next_event->type != event->type) &&
924 (next_event->any.window == event->any.window))
926 /* Throw both the peeked copy and the queued copy away
928 gdk_event_free (next_event);
929 next_event = gdk_event_get ();
930 gdk_event_free (next_event);
936 gdk_event_free (next_event);
938 /* Find the widget which got the event. We store the widget
939 * in the user_data field of GdkWindow's.
940 * Ignore the event if we don't have a widget for it, except
941 * for GDK_PROPERTY_NOTIFY events which are handled specialy.
942 * Though this happens rarely, bogus events can occour
943 * for e.g. destroyed GdkWindows.
945 event_widget = gtk_get_event_widget (event);
948 /* To handle selection INCR transactions, we select
949 * PropertyNotify events on the requestor window and create
950 * a corresponding (fake) GdkWindow so that events get
951 * here. There won't be a widget though, so we have to handle
954 if (event->type == GDK_PROPERTY_NOTIFY)
955 gtk_selection_incr_event (event->any.window,
957 else if (event->type == GDK_SETTING)
958 _gtk_settings_handle_event (&event->setting);
963 /* Push the event onto a stack of current events for
964 * gtk_current_event_get().
966 current_events = g_list_prepend (current_events, event);
968 window_group = gtk_main_get_window_group (event_widget);
970 /* If there is a grab in effect...
972 if (window_group->grabs)
974 grab_widget = window_group->grabs->data;
976 /* If the grab widget is an ancestor of the event widget
977 * then we send the event to the original event widget.
978 * This is the key to implementing modality.
980 if (GTK_WIDGET_IS_SENSITIVE (event_widget) &&
981 gtk_widget_is_ancestor (event_widget, grab_widget))
982 grab_widget = event_widget;
986 grab_widget = event_widget;
989 /* Not all events get sent to the grabbing widget.
990 * The delete, destroy, expose, focus change and resize
991 * events still get sent to the event widget because
992 * 1) these events have no meaning for the grabbing widget
993 * and 2) redirecting these events to the grabbing widget
994 * could cause the display to be messed up.
996 * Drag events are also not redirected, since it isn't
997 * clear what the semantics of that would be.
1005 gtk_widget_ref (event_widget);
1006 if ((!window_group->grabs || gtk_widget_get_toplevel (window_group->grabs->data) == event_widget) &&
1007 !gtk_widget_event (event_widget, event))
1008 gtk_widget_destroy (event_widget);
1009 gtk_widget_unref (event_widget);
1013 /* Unexpected GDK_DESTROY from the outside, ignore for
1014 * child windows, handle like a GDK_DELETE for toplevels
1016 if (!event_widget->parent)
1018 gtk_widget_ref (event_widget);
1019 if (!gtk_widget_event (event_widget, event) &&
1020 GTK_WIDGET_REALIZED (event_widget))
1021 gtk_widget_destroy (event_widget);
1022 gtk_widget_unref (event_widget);
1027 if (event->any.window && GTK_WIDGET_DOUBLE_BUFFERED (event_widget))
1029 gdk_window_begin_paint_region (event->any.window, event->expose.region);
1030 gtk_widget_send_expose (event_widget, event);
1031 gdk_window_end_paint (event->any.window);
1034 gtk_widget_send_expose (event_widget, event);
1037 case GDK_PROPERTY_NOTIFY:
1039 case GDK_FOCUS_CHANGE:
1043 case GDK_SELECTION_CLEAR:
1044 case GDK_SELECTION_REQUEST:
1045 case GDK_SELECTION_NOTIFY:
1046 case GDK_CLIENT_EVENT:
1047 case GDK_VISIBILITY_NOTIFY:
1048 case GDK_WINDOW_STATE:
1049 gtk_widget_event (event_widget, event);
1053 case GDK_BUTTON_PRESS:
1054 case GDK_2BUTTON_PRESS:
1055 case GDK_3BUTTON_PRESS:
1056 gtk_propagate_event (grab_widget, event);
1060 case GDK_KEY_RELEASE:
1063 if (gtk_invoke_key_snoopers (grab_widget, event))
1066 /* else fall through */
1067 case GDK_MOTION_NOTIFY:
1068 case GDK_BUTTON_RELEASE:
1069 case GDK_PROXIMITY_IN:
1070 case GDK_PROXIMITY_OUT:
1071 gtk_propagate_event (grab_widget, event);
1074 case GDK_ENTER_NOTIFY:
1075 if (GTK_WIDGET_IS_SENSITIVE (grab_widget))
1077 g_object_ref (event_widget);
1079 gtk_widget_event (grab_widget, event);
1080 if (event_widget == grab_widget)
1081 GTK_PRIVATE_SET_FLAG (event_widget, GTK_LEAVE_PENDING);
1083 g_object_unref (event_widget);
1087 case GDK_LEAVE_NOTIFY:
1088 if (GTK_WIDGET_LEAVE_PENDING (event_widget))
1090 GTK_PRIVATE_UNSET_FLAG (event_widget, GTK_LEAVE_PENDING);
1091 gtk_widget_event (event_widget, event);
1093 else if (GTK_WIDGET_IS_SENSITIVE (grab_widget))
1094 gtk_widget_event (grab_widget, event);
1097 case GDK_DRAG_STATUS:
1098 case GDK_DROP_FINISHED:
1099 _gtk_drag_source_handle_event (event_widget, event);
1101 case GDK_DRAG_ENTER:
1102 case GDK_DRAG_LEAVE:
1103 case GDK_DRAG_MOTION:
1104 case GDK_DROP_START:
1105 _gtk_drag_dest_handle_event (event_widget, event);
1108 g_assert_not_reached ();
1112 tmp_list = current_events;
1113 current_events = g_list_remove_link (current_events, tmp_list);
1114 g_list_free_1 (tmp_list);
1129 static GtkWindowGroup *
1130 gtk_main_get_window_group (GtkWidget *widget)
1132 GtkWidget *toplevel = NULL;
1135 toplevel = gtk_widget_get_toplevel (widget);
1137 if (toplevel && GTK_IS_WINDOW (toplevel))
1138 return _gtk_window_get_group (GTK_WINDOW (toplevel));
1140 return _gtk_window_get_group (NULL);
1145 GtkWidget *old_grab_widget;
1146 GtkWidget *new_grab_widget;
1150 check_is_grabbed (GtkWidget *widget,
1151 GtkWidget *grab_widget)
1154 return !(widget == grab_widget || gtk_widget_is_ancestor (widget, grab_widget));
1160 gtk_grab_notify_foreach (GtkWidget *child,
1164 GrabNotifyInfo *info = data;
1165 gboolean was_grabbed = check_is_grabbed (child, info->old_grab_widget);
1166 gboolean is_grabbed = check_is_grabbed (child, info->new_grab_widget);
1168 if (was_grabbed != is_grabbed)
1170 g_object_ref (G_OBJECT (child));
1172 gtk_signal_emit_by_name (GTK_OBJECT (child), "grab_notify", was_grabbed);
1174 if (GTK_IS_CONTAINER (child))
1175 gtk_container_foreach (GTK_CONTAINER (child), gtk_grab_notify_foreach, info);
1177 g_object_unref (G_OBJECT (child));
1182 gtk_grab_notify (GtkWindowGroup *group,
1183 GtkWidget *grab_widget,
1184 gboolean was_grabbed)
1187 GrabNotifyInfo info;
1191 info.old_grab_widget = grab_widget;
1192 info.new_grab_widget = group->grabs ? group->grabs->data : NULL;
1196 info.old_grab_widget = (group->grabs && group->grabs->next) ? group->grabs->next->data : NULL;
1197 info.new_grab_widget = grab_widget;
1200 g_object_ref (group);
1201 g_object_ref (grab_widget);
1203 toplevels = gtk_window_list_toplevels ();
1204 g_list_foreach (toplevels, (GFunc)g_object_ref, NULL);
1208 GtkWindow *toplevel = toplevels->data;
1209 toplevels = g_list_delete_link (toplevels, toplevels);
1211 if (group == _gtk_window_get_group (toplevel))
1212 gtk_container_foreach (GTK_CONTAINER (toplevel), gtk_grab_notify_foreach, &info);
1213 g_object_unref (toplevel);
1216 g_object_unref (group);
1217 g_object_unref (grab_widget);
1221 gtk_grab_add (GtkWidget *widget)
1223 GtkWindowGroup *group;
1224 gboolean was_grabbed;
1226 g_return_if_fail (widget != NULL);
1228 if (!GTK_WIDGET_HAS_GRAB (widget) && GTK_WIDGET_IS_SENSITIVE (widget))
1230 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_GRAB);
1232 group = gtk_main_get_window_group (widget);
1234 was_grabbed = (group->grabs != NULL);
1236 gtk_widget_ref (widget);
1237 group->grabs = g_slist_prepend (group->grabs, widget);
1239 gtk_grab_notify (group, widget, FALSE);
1244 gtk_grab_get_current (void)
1246 GtkWindowGroup *group;
1248 group = gtk_main_get_window_group (NULL);
1251 return GTK_WIDGET (group->grabs->data);
1256 gtk_grab_remove (GtkWidget *widget)
1258 GtkWindowGroup *group;
1260 g_return_if_fail (widget != NULL);
1262 if (GTK_WIDGET_HAS_GRAB (widget))
1264 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_GRAB);
1266 group = gtk_main_get_window_group (widget);
1267 group->grabs = g_slist_remove (group->grabs, widget);
1269 gtk_widget_unref (widget);
1271 gtk_grab_notify (group, widget, TRUE);
1276 gtk_init_add (GtkFunction function,
1279 GtkInitFunction *init;
1281 init = g_new (GtkInitFunction, 1);
1282 init->function = function;
1285 init_functions = g_list_prepend (init_functions, init);
1289 gtk_key_snooper_install (GtkKeySnoopFunc snooper,
1292 GtkKeySnooperData *data;
1293 static guint snooper_id = 1;
1295 g_return_val_if_fail (snooper != NULL, 0);
1297 data = g_new (GtkKeySnooperData, 1);
1298 data->func = snooper;
1299 data->func_data = func_data;
1300 data->id = snooper_id++;
1301 key_snoopers = g_slist_prepend (key_snoopers, data);
1307 gtk_key_snooper_remove (guint snooper_id)
1309 GtkKeySnooperData *data = NULL;
1312 slist = key_snoopers;
1316 if (data->id == snooper_id)
1319 slist = slist->next;
1323 key_snoopers = g_slist_remove (key_snoopers, data);
1327 gtk_invoke_key_snoopers (GtkWidget *grab_widget,
1331 gint return_val = FALSE;
1333 slist = key_snoopers;
1334 while (slist && !return_val)
1336 GtkKeySnooperData *data;
1339 slist = slist->next;
1340 return_val = (*data->func) (grab_widget, (GdkEventKey*) event, data->func_data);
1347 gtk_quit_add_full (guint main_level,
1348 GtkFunction function,
1349 GtkCallbackMarshal marshal,
1351 GtkDestroyNotify destroy)
1353 static guint quit_id = 1;
1354 GtkQuitFunction *quitf;
1356 g_return_val_if_fail ((function != NULL) || (marshal != NULL), 0);
1358 if (!quit_mem_chunk)
1359 quit_mem_chunk = g_mem_chunk_new ("quit mem chunk", sizeof (GtkQuitFunction),
1360 512, G_ALLOC_AND_FREE);
1362 quitf = g_chunk_new (GtkQuitFunction, quit_mem_chunk);
1364 quitf->id = quit_id++;
1365 quitf->main_level = main_level;
1366 quitf->function = function;
1367 quitf->marshal = marshal;
1369 quitf->destroy = destroy;
1371 quit_functions = g_list_prepend (quit_functions, quitf);
1377 gtk_quit_destroy (GtkQuitFunction *quitf)
1380 quitf->destroy (quitf->data);
1381 g_mem_chunk_free (quit_mem_chunk, quitf);
1385 gtk_quit_destructor (GtkObject **object_p)
1388 gtk_object_destroy (*object_p);
1395 gtk_quit_add_destroy (guint main_level,
1398 GtkObject **object_p;
1400 g_return_if_fail (main_level > 0);
1401 g_return_if_fail (GTK_IS_OBJECT (object));
1403 object_p = g_new (GtkObject*, 1);
1405 gtk_signal_connect (object,
1407 GTK_SIGNAL_FUNC (gtk_widget_destroyed),
1409 gtk_quit_add (main_level, (GtkFunction) gtk_quit_destructor, object_p);
1413 gtk_quit_add (guint main_level,
1414 GtkFunction function,
1417 return gtk_quit_add_full (main_level, function, NULL, data, NULL);
1421 gtk_quit_remove (guint id)
1423 GtkQuitFunction *quitf;
1426 tmp_list = quit_functions;
1429 quitf = tmp_list->data;
1431 if (quitf->id == id)
1433 quit_functions = g_list_remove_link (quit_functions, tmp_list);
1434 g_list_free (tmp_list);
1435 gtk_quit_destroy (quitf);
1440 tmp_list = tmp_list->next;
1445 gtk_quit_remove_by_data (gpointer data)
1447 GtkQuitFunction *quitf;
1450 tmp_list = quit_functions;
1453 quitf = tmp_list->data;
1455 if (quitf->data == data)
1457 quit_functions = g_list_remove_link (quit_functions, tmp_list);
1458 g_list_free (tmp_list);
1459 gtk_quit_destroy (quitf);
1464 tmp_list = tmp_list->next;
1469 gtk_timeout_add_full (guint32 interval,
1470 GtkFunction function,
1471 GtkCallbackMarshal marshal,
1473 GtkDestroyNotify destroy)
1477 GtkClosure *closure;
1479 closure = g_new (GtkClosure, 1);
1480 closure->marshal = marshal;
1481 closure->data = data;
1482 closure->destroy = destroy;
1484 return g_timeout_add_full (0, interval,
1485 gtk_invoke_idle_timeout,
1487 gtk_destroy_closure);
1490 return g_timeout_add_full (0, interval, function, data, destroy);
1494 gtk_timeout_add (guint32 interval,
1495 GtkFunction function,
1498 return g_timeout_add_full (0, interval, function, data, NULL);
1502 gtk_timeout_remove (guint tag)
1504 g_source_remove (tag);
1508 gtk_idle_add_full (gint priority,
1509 GtkFunction function,
1510 GtkCallbackMarshal marshal,
1512 GtkDestroyNotify destroy)
1516 GtkClosure *closure;
1518 closure = g_new (GtkClosure, 1);
1519 closure->marshal = marshal;
1520 closure->data = data;
1521 closure->destroy = destroy;
1523 return g_idle_add_full (priority,
1524 gtk_invoke_idle_timeout,
1526 gtk_destroy_closure);
1529 return g_idle_add_full (priority, function, data, destroy);
1533 gtk_idle_add (GtkFunction function,
1536 return g_idle_add_full (GTK_PRIORITY_DEFAULT, function, data, NULL);
1540 gtk_idle_add_priority (gint priority,
1541 GtkFunction function,
1544 return g_idle_add_full (priority, function, data, NULL);
1548 gtk_idle_remove (guint tag)
1550 g_source_remove (tag);
1554 gtk_idle_remove_by_data (gpointer data)
1556 if (!g_idle_remove_by_data (data))
1557 g_warning ("gtk_idle_remove_by_data(%p): no such idle", data);
1561 gtk_input_add_full (gint source,
1562 GdkInputCondition condition,
1563 GdkInputFunction function,
1564 GtkCallbackMarshal marshal,
1566 GtkDestroyNotify destroy)
1570 GtkClosure *closure;
1572 closure = g_new (GtkClosure, 1);
1573 closure->marshal = marshal;
1574 closure->data = data;
1575 closure->destroy = destroy;
1577 return gdk_input_add_full (source,
1579 (GdkInputFunction) gtk_invoke_input,
1581 (GdkDestroyNotify) gtk_destroy_closure);
1584 return gdk_input_add_full (source, condition, function, data, destroy);
1588 gtk_input_remove (guint tag)
1590 g_source_remove (tag);
1594 gtk_destroy_closure (gpointer data)
1596 GtkClosure *closure = data;
1598 if (closure->destroy)
1599 (closure->destroy) (closure->data);
1604 gtk_invoke_idle_timeout (gpointer data)
1606 GtkClosure *closure = data;
1609 gint ret_val = FALSE;
1610 args[0].name = NULL;
1611 args[0].type = GTK_TYPE_BOOL;
1612 args[0].d.pointer_data = &ret_val;
1613 closure->marshal (NULL, closure->data, 0, args);
1618 gtk_invoke_input (gpointer data,
1620 GdkInputCondition condition)
1622 GtkClosure *closure = data;
1625 args[0].type = GTK_TYPE_INT;
1626 args[0].name = NULL;
1627 GTK_VALUE_INT (args[0]) = source;
1628 args[1].type = GDK_TYPE_INPUT_CONDITION;
1629 args[1].name = NULL;
1630 GTK_VALUE_FLAGS (args[1]) = condition;
1631 args[2].type = GTK_TYPE_NONE;
1632 args[2].name = NULL;
1634 closure->marshal (NULL, closure->data, 2, args);
1638 * gtk_get_current_event:
1640 * Obtains a copy of the event currently being processed by GTK+. For
1641 * example, if you get a "clicked" signal from #GtkButton, the current
1642 * event will be the #GdkEventButton that triggered the "clicked"
1643 * signal. The returned event must be freed with gdk_event_free().
1644 * If there is no current event, the function returns %NULL.
1646 * Return value: a copy of the current event, or %NULL if no current event.
1649 gtk_get_current_event (void)
1652 return gdk_event_copy (current_events->data);
1658 * gtk_get_current_event_time:
1660 * If there is a current event and it has a timestamp, return that
1661 * timestamp, otherwise return %GDK_CURRENT_TIME.
1663 * Return value: the timestamp from the current event, or %GDK_CURRENT_TIME.
1666 gtk_get_current_event_time (void)
1669 return gdk_event_get_time (current_events->data);
1671 return GDK_CURRENT_TIME;
1675 * gtk_get_current_event_state:
1676 * @state: a location to store the state of the current event
1678 * If there is a current event and it has a state field, place
1679 * that state field in @state and return %TRUE, otherwise return
1682 * Return value: %TRUE if there was a current event and it had a state field
1685 gtk_get_current_event_state (GdkModifierType *state)
1687 g_return_val_if_fail (state != NULL, FALSE);
1690 return gdk_event_get_state (current_events->data, state);
1699 * gtk_get_event_widget:
1700 * @event: a #GdkEvent
1702 * If @event is %NULL or the event was not associated with any widget,
1703 * returns %NULL, otherwise returns the widget that received the event
1706 * Return value: the widget that originally received @event, or %NULL
1709 gtk_get_event_widget (GdkEvent *event)
1714 if (event && event->any.window)
1715 gdk_window_get_user_data (event->any.window, (void**) &widget);
1721 gtk_quit_invoke_function (GtkQuitFunction *quitf)
1723 if (!quitf->marshal)
1724 return quitf->function (quitf->data);
1728 gint ret_val = FALSE;
1730 args[0].name = NULL;
1731 args[0].type = GTK_TYPE_BOOL;
1732 args[0].d.pointer_data = &ret_val;
1733 ((GtkCallbackMarshal) quitf->marshal) (NULL,
1741 * gtk_propagate_event:
1742 * @widget: a #GtkWidget
1745 * Sends an event to a widget, propagating the event to parent widgets
1746 * if the event remains unhandled. Events received by GTK+ from GDK
1747 * normally begin in gtk_main_do_event(). Depending on the type of
1748 * event, existence of modal dialogs, grabs, etc., the event may be
1749 * propagated; if so, this function is used. gtk_propagate_event()
1750 * calls gtk_widget_event() on each widget it decides to send the
1751 * event to. So gtk_widget_event() is the lowest-level function; it
1752 * simply emits the "event" and possibly an event-specific signal on a
1753 * widget. gtk_propagate_event() is a bit higher-level, and
1754 * gtk_main_do_event() is the highest level.
1756 * All that said, you most likely don't want to use any of these
1757 * functions; synthesizing events is rarely needed. Consider asking on
1758 * the mailing list for better ways to achieve your goals. For
1759 * example, use gdk_window_invalidate_rect() or
1760 * gtk_widget_queue_draw() instead of making up expose events.
1764 gtk_propagate_event (GtkWidget *widget,
1769 g_return_if_fail (GTK_IS_WIDGET (widget));
1770 g_return_if_fail (event != NULL);
1772 handled_event = FALSE;
1774 gtk_widget_ref (widget);
1776 if ((event->type == GDK_KEY_PRESS) ||
1777 (event->type == GDK_KEY_RELEASE))
1779 /* Only send key events within Window widgets to the Window
1780 * The Window widget will in turn pass the
1781 * key event on to the currently focused widget
1786 window = gtk_widget_get_toplevel (widget);
1787 if (window && GTK_IS_WINDOW (window))
1789 /* If there is a grab within the window, give the grab widget
1790 * a first crack at the key event
1792 if (widget != window && GTK_WIDGET_HAS_GRAB (widget))
1793 handled_event = gtk_widget_event (widget, event);
1797 window = gtk_widget_get_toplevel (widget);
1798 if (window && GTK_IS_WINDOW (window))
1800 if (GTK_WIDGET_IS_SENSITIVE (window))
1801 gtk_widget_event (window, event);
1805 handled_event = TRUE; /* don't send to widget */
1809 /* Other events get propagated up the widget tree
1810 * so that parents can see the button and motion
1811 * events of the children.
1819 handled_event = !GTK_WIDGET_IS_SENSITIVE (widget) || gtk_widget_event (widget, event);
1820 tmp = widget->parent;
1821 gtk_widget_unref (widget);
1825 if (!handled_event && widget)
1826 gtk_widget_ref (widget);
1832 gtk_widget_unref (widget);
1837 gtk_error (gchar *str)
1843 gtk_warning (gchar *str)
1849 gtk_message (gchar *str)
1855 gtk_print (gchar *str)
1857 static GtkWidget *window = NULL;
1858 static GtkWidget *text;
1859 static int level = 0;
1863 GtkWidget *hscrollbar;
1864 GtkWidget *vscrollbar;
1865 GtkWidget *separator;
1870 fputs (str, stdout);
1877 window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
1879 gtk_signal_connect (GTK_OBJECT (window), "destroy",
1880 (GtkSignalFunc) gtk_widget_destroyed,
1883 gtk_window_set_title (GTK_WINDOW (window), "Messages");
1885 box1 = gtk_vbox_new (FALSE, 0);
1886 gtk_container_add (GTK_CONTAINER (window), box1);
1887 gtk_widget_show (box1);
1890 box2 = gtk_vbox_new (FALSE, 10);
1891 gtk_container_set_border_width (GTK_CONTAINER (box2), 10);
1892 gtk_box_pack_start (GTK_BOX (box1), box2, TRUE, TRUE, 0);
1893 gtk_widget_show (box2);
1896 table = gtk_table_new (2, 2, FALSE);
1897 gtk_table_set_row_spacing (GTK_TABLE (table), 0, 2);
1898 gtk_table_set_col_spacing (GTK_TABLE (table), 0, 2);
1899 gtk_box_pack_start (GTK_BOX (box2), table, TRUE, TRUE, 0);
1900 gtk_widget_show (table);
1902 text = gtk_text_new (NULL, NULL);
1903 gtk_text_set_editable (GTK_TEXT (text), FALSE);
1904 gtk_table_attach_defaults (GTK_TABLE (table), text, 0, 1, 0, 1);
1905 gtk_widget_show (text);
1906 gtk_widget_realize (text);
1908 hscrollbar = gtk_hscrollbar_new (GTK_TEXT (text)->hadj);
1909 gtk_table_attach (GTK_TABLE (table), hscrollbar, 0, 1, 1, 2,
1910 GTK_EXPAND | GTK_FILL, GTK_FILL, 0, 0);
1911 gtk_widget_show (hscrollbar);
1913 vscrollbar = gtk_vscrollbar_new (GTK_TEXT (text)->vadj);
1914 gtk_table_attach (GTK_TABLE (table), vscrollbar, 1, 2, 0, 1,
1915 GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
1916 gtk_widget_show (vscrollbar);
1918 separator = gtk_hseparator_new ();
1919 gtk_box_pack_start (GTK_BOX (box1), separator, FALSE, TRUE, 0);
1920 gtk_widget_show (separator);
1923 box2 = gtk_vbox_new (FALSE, 10);
1924 gtk_container_set_border_width (GTK_CONTAINER (box2), 10);
1925 gtk_box_pack_start (GTK_BOX (box1), box2, FALSE, TRUE, 0);
1926 gtk_widget_show (box2);
1929 button = gtk_button_new_with_label ("close");
1930 gtk_signal_connect_object (GTK_OBJECT (button), "clicked",
1931 (GtkSignalFunc) gtk_widget_hide,
1932 GTK_OBJECT (window));
1933 gtk_box_pack_start (GTK_BOX (box2), button, TRUE, TRUE, 0);
1934 GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);
1935 gtk_widget_grab_default (button);
1936 gtk_widget_show (button);
1940 gtk_text_insert (GTK_TEXT (text), NULL, NULL, NULL, str, -1);
1943 if (!GTK_WIDGET_VISIBLE (window))
1944 gtk_widget_show (window);
1949 _gtk_boolean_handled_accumulator (GSignalInvocationHint *ihint,
1950 GValue *return_accu,
1951 const GValue *handler_return,
1954 gboolean continue_emission;
1955 gboolean signal_handled;
1957 signal_handled = g_value_get_boolean (handler_return);
1958 g_value_set_boolean (return_accu, signal_handled);
1959 continue_emission = !signal_handled;
1961 return continue_emission;