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/.
30 #include "gdkconfig.h"
34 #ifdef HAVE_BIND_TEXTDOMAIN_CODESET
44 #include <sys/types.h> /* For uid_t, gid_t */
52 #include <pango/pango-types.h> /* For pango_language_from_string */
56 #include "gtkaccelmap.h"
58 #include "gtkclipboard.h"
60 #include "gtkversion.h"
62 #include "gtkmodules.h"
64 #include "gtkselection.h"
65 #include "gtksettings.h"
66 #include "gtkwidget.h"
67 #include "gtkwindow.h"
68 #include "gtkprivate.h"
72 #include "gdk/gdkprivate.h" /* for GDK_WINDOW_DESTROYED */
74 /* Private type definitions
76 typedef struct _GtkInitFunction GtkInitFunction;
77 typedef struct _GtkQuitFunction GtkQuitFunction;
78 typedef struct _GtkClosure GtkClosure;
79 typedef struct _GtkKeySnooperData GtkKeySnooperData;
81 struct _GtkInitFunction
87 struct _GtkQuitFunction
91 GtkCallbackMarshal marshal;
94 GtkDestroyNotify destroy;
99 GtkCallbackMarshal marshal;
101 GtkDestroyNotify destroy;
104 struct _GtkKeySnooperData
106 GtkKeySnoopFunc func;
111 static gint gtk_quit_invoke_function (GtkQuitFunction *quitf);
112 static void gtk_quit_destroy (GtkQuitFunction *quitf);
113 static gint gtk_invoke_key_snoopers (GtkWidget *grab_widget,
116 static void gtk_destroy_closure (gpointer data);
117 static gboolean gtk_invoke_idle_timeout (gpointer data);
118 static void gtk_invoke_input (gpointer data,
120 GdkInputCondition condition);
123 static void gtk_error (gchar *str);
124 static void gtk_warning (gchar *str);
125 static void gtk_message (gchar *str);
126 static void gtk_print (gchar *str);
129 static GtkWindowGroup *gtk_main_get_window_group (GtkWidget *widget);
131 const guint gtk_major_version = GTK_MAJOR_VERSION;
132 const guint gtk_minor_version = GTK_MINOR_VERSION;
133 const guint gtk_micro_version = GTK_MICRO_VERSION;
134 const guint gtk_binary_age = GTK_BINARY_AGE;
135 const guint gtk_interface_age = GTK_INTERFACE_AGE;
137 static guint gtk_main_loop_level = 0;
138 static gint gtk_initialized = FALSE;
139 static GList *current_events = NULL;
141 static GSList *main_loops = NULL; /* stack of currently executing main loops */
143 static GList *init_functions = NULL; /* A list of init functions.
145 static GList *quit_functions = NULL; /* A list of quit functions.
147 static GMemChunk *quit_mem_chunk = NULL;
149 static GSList *key_snoopers = NULL;
151 guint gtk_debug_flags = 0; /* Global GTK debug flag */
153 #ifdef G_ENABLE_DEBUG
154 static const GDebugKey gtk_debug_keys[] = {
155 {"misc", GTK_DEBUG_MISC},
156 {"plugsocket", GTK_DEBUG_PLUGSOCKET},
157 {"text", GTK_DEBUG_TEXT},
158 {"tree", GTK_DEBUG_TREE},
159 {"updates", GTK_DEBUG_UPDATES},
160 {"keybindings", GTK_DEBUG_KEYBINDINGS},
161 {"multihead", GTK_DEBUG_MULTIHEAD},
162 {"modules", GTK_DEBUG_MODULES},
163 {"geometry", GTK_DEBUG_GEOMETRY},
164 {"icontheme", GTK_DEBUG_ICONTHEME}
167 static const guint gtk_ndebug_keys = sizeof (gtk_debug_keys) / sizeof (GDebugKey);
169 #endif /* G_ENABLE_DEBUG */
173 * @required_major: the required major version.
174 * @required_minor: the required major version.
175 * @required_micro: the required major version.
177 * Checks that the GTK+ library in use is compatible with the
178 * given version. Generally you would pass in the constants
179 * #GTK_MAJOR_VERSION, #GTK_MINOR_VERSION, #GTK_MICRO_VERSION
180 * as the three arguments to this function; that produces
181 * a check that the library in use is compatible with
182 * the version of GTK+ the application or module was compiled
185 * Compatibility is defined by two things: first the version
186 * of the running library is newer than the version
187 * @required_major.required_minor.@required_micro. Second
188 * the running library must be binary compatible with the
189 * version @required_major.required_minor.@required_micro
190 * (same major version.)
192 * This function is primarily for GTK+ modules; the module
193 * can call this function to check that it wasn't loaded
194 * into an incompatible version of GTK+. However, such a
195 * a check isn't completely reliable, since the module may be
196 * linked against an old version of GTK+ and calling the
197 * old version of gtk_check_version(), but still get loaded
198 * into an application using a newer version of GTK+.
200 * Return value: %NULL if the GTK+ library is compatible with the
201 * given version, or a string describing the version mismatch.
202 * The returned string is owned by GTK+ and should not be modified
206 gtk_check_version (guint required_major,
207 guint required_minor,
208 guint required_micro)
210 gint gtk_effective_micro = 100 * GTK_MINOR_VERSION + GTK_MICRO_VERSION;
211 gint required_effective_micro = 100 * required_minor + required_micro;
213 if (required_major > GTK_MAJOR_VERSION)
214 return "Gtk+ version too old (major mismatch)";
215 if (required_major < GTK_MAJOR_VERSION)
216 return "Gtk+ version too new (major mismatch)";
217 if (required_effective_micro < gtk_effective_micro - GTK_BINARY_AGE)
218 return "Gtk+ version too new (micro mismatch)";
219 if (required_effective_micro > gtk_effective_micro)
220 return "Gtk+ version too old (micro mismatch)";
224 /* This checks to see if the process is running suid or sgid
225 * at the current time. If so, we don't allow GTK+ to be initialized.
226 * This is meant to be a mild check - we only error out if we
227 * can prove the programmer is doing something wrong, not if
228 * they could be doing something wrong. For this reason, we
229 * don't use issetugid() on BSD or prctl (PR_GET_DUMPABLE).
234 /* this isn't at all relevant on MS Windows and doesn't compile ... --hb */
236 uid_t ruid, euid, suid; /* Real, effective and saved user ID's */
237 gid_t rgid, egid, sgid; /* Real, effective and saved group ID's */
239 #ifdef HAVE_GETRESUID
240 /* These aren't in the header files, so we prototype them here.
242 int getresuid(uid_t *ruid, uid_t *euid, uid_t *suid);
243 int getresgid(gid_t *rgid, gid_t *egid, gid_t *sgid);
245 if (getresuid (&ruid, &euid, &suid) != 0 ||
246 getresgid (&rgid, &egid, &sgid) != 0)
247 #endif /* HAVE_GETRESUID */
249 suid = ruid = getuid ();
250 sgid = rgid = getgid ();
255 if (ruid != euid || ruid != suid ||
256 rgid != egid || rgid != sgid)
258 g_warning ("This process is currently running setuid or setgid.\n"
259 "This is not a supported use of GTK+. You must create a helper\n"
260 "program instead. For further details, see:\n\n"
261 " http://www.gtk.org/setuid.html\n\n"
262 "Refusing to initialize GTK+.");
271 G_WIN32_DLLMAIN_FOR_DLL_NAME(static, dll_name)
274 _gtk_get_datadir (void)
276 static char *gtk_datadir = NULL;
277 if (gtk_datadir == NULL)
278 gtk_datadir = g_win32_get_package_installation_subdirectory
279 (GETTEXT_PACKAGE, dll_name, "share");
285 _gtk_get_libdir (void)
287 static char *gtk_libdir = NULL;
288 if (gtk_libdir == NULL)
289 gtk_libdir = g_win32_get_package_installation_subdirectory
290 (GETTEXT_PACKAGE, dll_name, "lib");
296 _gtk_get_localedir (void)
298 static char *gtk_localedir = NULL;
299 if (gtk_localedir == NULL)
303 temp = g_win32_get_package_installation_subdirectory
304 (GETTEXT_PACKAGE, dll_name, "lib\\locale");
306 /* gtk_localedir is passed to bindtextdomain() which isn't
309 gtk_localedir = g_win32_locale_filename_from_utf8 (temp);
312 return gtk_localedir;
316 _gtk_get_sysconfdir (void)
318 static char *gtk_sysconfdir = NULL;
319 if (gtk_sysconfdir == NULL)
320 gtk_sysconfdir = g_win32_get_package_installation_subdirectory
321 (GETTEXT_PACKAGE, dll_name, "etc");
323 return gtk_sysconfdir;
327 _gtk_get_data_prefix (void)
329 static char *gtk_data_prefix = NULL;
330 if (gtk_data_prefix == NULL)
331 gtk_data_prefix = g_win32_get_package_installation_directory
332 (GETTEXT_PACKAGE, dll_name);
334 return gtk_data_prefix;
337 #endif /* G_OS_WIN32 */
339 static gboolean do_setlocale = TRUE;
342 * gtk_disable_setlocale:
344 * Prevents gtk_init(), gtk_init_check(), gtk_init_with_args() and
345 * gtk_parse_args() from automatically
346 * calling <literal>setlocale (LC_ALL, "")</literal>. You would
347 * want to use this function if you wanted to set the locale for
348 * your program to something other than the user's locale, or if
349 * you wanted to set different values for different locale categories.
351 * Most programs should not need to call this function.
354 gtk_disable_setlocale (void)
357 g_warning ("gtk_disable_setlocale() must be called before gtk_init()");
359 do_setlocale = FALSE;
362 #ifdef G_PLATFORM_WIN32
363 #undef gtk_init_check
366 static GString *gtk_modules_string = NULL;
367 static gboolean g_fatal_warnings = FALSE;
369 #ifdef G_ENABLE_DEBUG
371 gtk_arg_debug_cb (const char *key, const char *value, gpointer user_data)
373 gtk_debug_flags |= g_parse_debug_string (value,
381 gtk_arg_no_debug_cb (const char *key, const char *value, gpointer user_data)
383 gtk_debug_flags &= ~g_parse_debug_string (value,
389 #endif /* G_ENABLE_DEBUG */
392 gtk_arg_module_cb (const char *key, const char *value, gpointer user_data)
396 if (gtk_modules_string)
397 g_string_append_c (gtk_modules_string, G_SEARCHPATH_SEPARATOR);
399 gtk_modules_string = g_string_new (NULL);
401 g_string_append (gtk_modules_string, value);
407 static GOptionEntry gtk_args[] = {
408 { "gtk-module", 0, 0, G_OPTION_ARG_CALLBACK, gtk_arg_module_cb,
409 /* Description of --gtk-module=MODULES in --help output */ N_("Load additional GTK+ modules"),
410 /* Placeholder in --gtk-module=MODULES in --help output */ N_("MODULES") },
411 { "g-fatal-warnings", 0, 0, G_OPTION_ARG_NONE, &g_fatal_warnings,
412 /* Description of --g-fatal-warnings in --help output */ N_("Make all warnings fatal"), NULL },
413 #ifdef G_ENABLE_DEBUG
414 { "gtk-debug", 0, 0, G_OPTION_ARG_CALLBACK, gtk_arg_debug_cb,
415 /* Description of --gtk-debug=FLAGS in --help output */ N_("GTK+ debugging flags to set"),
416 /* Placeholder in --gtk-debug=FLAGS in --help output */ N_("FLAGS") },
417 { "gtk-no-debug", 0, 0, G_OPTION_ARG_CALLBACK, gtk_arg_no_debug_cb,
418 /* Description of --gtk-no-debug=FLAGS in --help output */ N_("GTK+ debugging flags to unset"),
419 /* Placeholder in --gtk-no-debug=FLAGS in --help output */ N_("FLAGS") },
425 do_pre_parse_initialization (int *argc,
428 const gchar *env_string;
431 g_set_error_handler (gtk_error);
432 g_set_warning_handler (gtk_warning);
433 g_set_message_handler (gtk_message);
434 g_set_print_handler (gtk_print);
439 if (!setlocale (LC_ALL, ""))
440 g_warning ("Locale not supported by C library.\n\tUsing the fallback 'C' locale.");
443 gdk_pre_parse_libgtk_only ();
444 gdk_event_handler_set ((GdkEventFunc)gtk_main_do_event, NULL, NULL);
446 #ifdef G_ENABLE_DEBUG
447 env_string = g_getenv ("GTK_DEBUG");
448 if (env_string != NULL)
450 gtk_debug_flags = g_parse_debug_string (env_string,
455 #endif /* G_ENABLE_DEBUG */
457 env_string = g_getenv ("GTK_MODULES");
459 gtk_modules_string = g_string_new (env_string);
463 gettext_initialization (void)
466 bindtextdomain (GETTEXT_PACKAGE, GTK_LOCALEDIR);
467 bindtextdomain (GETTEXT_PACKAGE "-properties", GTK_LOCALEDIR);
468 # ifdef HAVE_BIND_TEXTDOMAIN_CODESET
469 bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
470 bind_textdomain_codeset (GETTEXT_PACKAGE "-properties", "UTF-8");
476 do_post_parse_initialization (int *argc,
482 gettext_initialization ();
484 if (g_fatal_warnings)
486 GLogLevelFlags fatal_mask;
488 fatal_mask = g_log_set_always_fatal (G_LOG_FATAL_MASK);
489 fatal_mask |= G_LOG_LEVEL_WARNING | G_LOG_LEVEL_CRITICAL;
490 g_log_set_always_fatal (fatal_mask);
493 if (gtk_debug_flags & GTK_DEBUG_UPDATES)
494 gdk_window_set_debug_updates (TRUE);
497 /* Translate to default:RTL if you want your widgets
498 * to be RTL, otherwise translate to default:LTR.
499 * Do *not* translate it to "predefinito:LTR", if it
500 * it isn't default:LTR or default:RTL it will not work
502 char *e = _("default:LTR");
503 if (strcmp (e, "default:RTL")==0) {
504 gtk_widget_set_default_direction (GTK_TEXT_DIR_RTL);
505 } else if (strcmp (e, "default:LTR")) {
506 g_warning ("Whoever translated default:LTR did so wrongly.\n");
511 _gtk_accel_map_init ();
514 /* Set the 'initialized' flag.
516 gtk_initialized = TRUE;
518 /* load gtk modules */
519 if (gtk_modules_string)
521 _gtk_modules_init (argc, argv, gtk_modules_string->str);
522 g_string_free (gtk_modules_string, TRUE);
529 gboolean open_default_display;
533 pre_parse_hook (GOptionContext *context,
538 do_pre_parse_initialization (NULL, NULL);
544 post_parse_hook (GOptionContext *context,
549 OptionGroupInfo *info = data;
552 do_post_parse_initialization (NULL, NULL);
554 if (info->open_default_display)
555 return gdk_display_open_default_libgtk_only () != NULL;
562 * gtk_get_option_group:
563 * @open_default_display: whether to open the default display
564 * when parsing the commandline arguments
566 * Returns a #GOptionGroup for the commandline arguments recognized
567 * by GTK+ and GDK. You should add this group to your #GOptionContext
568 * with g_option_context_add_group(), if you are using
569 * g_option_context_parse() to parse your commandline arguments.
571 * Returns a #GOptionGroup for the commandline arguments recognized
577 gtk_get_option_group (gboolean open_default_display)
580 OptionGroupInfo *info;
582 info = g_new0 (OptionGroupInfo, 1);
583 info->open_default_display = open_default_display;
585 group = g_option_group_new ("gtk", _("GTK+ Options"), _("Show GTK+ Options"), info, g_free);
586 g_option_group_set_parse_hooks (group, pre_parse_hook, post_parse_hook);
588 gdk_add_option_entries_libgtk_only (group);
589 g_option_group_add_entries (group, gtk_args);
590 g_option_group_set_translation_domain (group, GETTEXT_PACKAGE);
596 * gtk_init_with_args:
597 * @argc: a pointer to the number of command line arguments.
598 * @argv: a pointer to the array of command line arguments.
599 * @parameter_string: a string which is displayed in
600 * the first line of <option>--help</option> output, after
601 * <literal><replaceable>programname</replaceable> [OPTION...]</literal>
602 * @entries: a %NULL-terminated array of #GOptionEntry<!-- -->s
603 * describing the options of your program
604 * @translation_domain: a translation domain to use for translating
605 * the <option>--help</option> output for the options in @entries
606 * with gettext(), or %NULL
607 * @error: a return location for errors
609 * This function does the same work as gtk_init_check().
610 * Additionally, it allows you to add your own commandline options,
611 * and it automatically generates nicely formatted
612 * <option>--help</option> output. Note that your program will
613 * be terminated after writing out the help output.
615 * Returns: %TRUE if the GUI has been successfully initialized,
621 gtk_init_with_args (int *argc,
623 char *parameter_string,
624 GOptionEntry *entries,
625 char *translation_domain,
628 GOptionContext *context;
629 GOptionGroup *gtk_group;
635 gettext_initialization ();
637 if (!check_setugid ())
640 gtk_group = gtk_get_option_group (TRUE);
642 context = g_option_context_new (parameter_string);
643 g_option_context_add_group (context, gtk_group);
646 g_option_context_add_main_entries (context, entries, translation_domain);
647 retval = g_option_context_parse (context, argc, argv, error);
649 g_option_context_free (context);
657 * @argc: a pointer to the number of command line arguments.
658 * @argv: a pointer to the array of command line arguments.
660 * Parses command line arguments, and initializes global
661 * attributes of GTK+, but does not actually open a connection
662 * to a display. (See gdk_display_open(), gdk_get_display_arg_name())
664 * Any arguments used by GTK+ or GDK are removed from the array and
665 * @argc and @argv are updated accordingly.
667 * You shouldn't call this function explicitely if you are using
668 * gtk_init(), or gtk_init_check().
670 * Return value: %TRUE if initialization succeeded, otherwise %FALSE.
673 gtk_parse_args (int *argc,
676 GOptionContext *option_context;
677 GOptionGroup *gtk_group;
682 gettext_initialization ();
684 if (!check_setugid ())
687 option_context = g_option_context_new (NULL);
688 g_option_context_set_ignore_unknown_options (option_context, TRUE);
689 g_option_context_set_help_enabled (option_context, FALSE);
690 gtk_group = gtk_get_option_group (FALSE);
691 g_option_context_set_main_group (option_context, gtk_group);
692 g_option_context_parse (option_context, argc, argv, NULL);
693 g_option_context_free (option_context);
698 #ifdef G_PLATFORM_WIN32
699 #undef gtk_init_check
704 * @argc: Address of the <parameter>argc</parameter> parameter of your
705 * main() function. Changed if any arguments were handled.
706 * @argv: Address of the <parameter>argv</parameter> parameter of main().
707 * Any parameters understood by gtk_init() are stripped before return.
709 * This function does the same work as gtk_init() with only
710 * a single change: It does not terminate the program if the GUI can't be
711 * initialized. Instead it returns %FALSE on failure.
713 * This way the application can fall back to some other means of communication
714 * with the user - for example a curses or command line interface.
716 * Return value: %TRUE if the GUI has been successfully initialized,
720 gtk_init_check (int *argc,
723 if (!gtk_parse_args (argc, argv))
726 return gdk_display_open_default_libgtk_only () != NULL;
729 #ifdef G_PLATFORM_WIN32
735 * @argc: Address of the <parameter>argc</parameter> parameter of your
736 * main() function. Changed if any arguments were handled.
737 * @argv: Address of the <parameter>argv</parameter> parameter of main().
738 * Any parameters understood by gtk_init() are stripped before return.
740 * Call this function before using any other GTK+ functions in your GUI
741 * applications. It will initialize everything needed to operate the
742 * toolkit and parses some standard command line options. @argc and
743 * @argv are adjusted accordingly so your own code will
744 * never see those standard arguments.
746 * Note that there are some alternative ways to initialize GTK+:
747 * if you are calling gtk_parse_args(), gtk_init_check(),
748 * gtk_init_with_args() or g_option_context_parse() with
749 * the option group returned by gtk_get_option_group(), you
750 * <emphasis>don't</emphasis> have to call gtk_init().
753 * This function will terminate your program if it was unable to initialize
754 * the GUI for some reason. If you want your program to fall back to a
755 * textual interface you want to call gtk_init_check() instead.
759 gtk_init (int *argc, char ***argv)
761 if (!gtk_init_check (argc, argv))
763 const char *display_name_arg = gdk_get_display_arg_name ();
764 g_warning ("cannot open display: %s", display_name_arg ? display_name_arg : " ");
769 #ifdef G_PLATFORM_WIN32
772 check_sizeof_GtkWindow (size_t sizeof_GtkWindow)
774 if (sizeof_GtkWindow != sizeof (GtkWindow))
775 g_error ("Incompatible build!\n"
776 "The code using GTK+ thinks GtkWindow is of different\n"
777 "size than it actually is in this build of GTK+.\n"
778 "On Windows, this probably means that you have compiled\n"
779 "your code with gcc without the -mms-bitfields switch,\n"
780 "or that you are using an unsupported compiler.");
783 /* In GTK+ 2.0 the GtkWindow struct actually is the same size in
784 * gcc-compiled code on Win32 whether compiled with -fnative-struct or
785 * not. Unfortunately this wan't noticed until after GTK+ 2.0.1. So,
786 * from GTK+ 2.0.2 on, check some other struct, too, where the use of
787 * -fnative-struct still matters. GtkBox is one such.
790 check_sizeof_GtkBox (size_t sizeof_GtkBox)
792 if (sizeof_GtkBox != sizeof (GtkBox))
793 g_error ("Incompatible build!\n"
794 "The code using GTK+ thinks GtkBox is of different\n"
795 "size than it actually is in this build of GTK+.\n"
796 "On Windows, this probably means that you have compiled\n"
797 "your code with gcc without the -mms-bitfields switch,\n"
798 "or that you are using an unsupported compiler.");
801 /* These two functions might get more checks added later, thus pass
802 * in the number of extra args.
805 gtk_init_abi_check (int *argc, char ***argv, int num_checks, size_t sizeof_GtkWindow, size_t sizeof_GtkBox)
807 check_sizeof_GtkWindow (sizeof_GtkWindow);
809 check_sizeof_GtkBox (sizeof_GtkBox);
810 gtk_init (argc, argv);
814 gtk_init_check_abi_check (int *argc, char ***argv, int num_checks, size_t sizeof_GtkWindow, size_t sizeof_GtkBox)
816 check_sizeof_GtkWindow (sizeof_GtkWindow);
818 check_sizeof_GtkBox (sizeof_GtkBox);
819 return gtk_init_check (argc, argv);
825 gtk_exit (gint errorcode)
834 * Initializes internationalization support for GTK+. gtk_init()
835 * automatically does this, so there is typically no point
836 * in calling this function.
838 * If you are calling this function because you changed the locale
839 * after GTK+ is was initialized, then calling this function
840 * may help a bit. (Note, however, that changing the locale
841 * after GTK+ is initialized may produce inconsistent results and
842 * is not really supported.)
844 * In detail - sets the current locale according to the
845 * program environment. This is the same as calling the C library function
846 * <literal>setlocale (LC_ALL, "")</literal> but also takes care of the
847 * locale specific setup of the windowing system used by GDK.
849 * Returns: a string corresponding to the locale set, typically in the
850 * form lang_COUNTRY, where lang is an ISO-639 language code, and
851 * COUNTRY is an ISO-3166 country code. On Unix, this form matches the
852 * result of the setlocale(); it is also used on other machines, such as
853 * Windows, where the C library returns a different result. The string is
854 * owned by GTK+ and should not be modified or freed.
857 gtk_set_locale (void)
859 return gdk_set_locale ();
865 * Return the Unix-style locale string for the language currently in
866 * effect. On Unix systems, this is the return value from
867 * <literal>setlocale(LC_CTYPE, NULL)</literal>, and the user can
868 * affect this through the environment variables LC_ALL, LC_CTYPE or
869 * LANG (checked in that order). The locale strings typically is in
870 * the form lang_COUNTRY, where lang is an ISO-639 language code, and
871 * COUNTRY is an ISO-3166 country code. For instance, sv_FI for
872 * Swedish as written in Finland or pt_BR for Portuguese as written in
875 * On Windows, the C library doesn't use any such environment
876 * variables, and setting them won't affect the behaviour of functions
877 * like ctime(). The user sets the locale through the Regional Options
878 * in the Control Panel. The C library (in the setlocale() function)
879 * does not use country and language codes, but country and language
880 * names spelled out in English.
881 * However, this function does check the above environment
882 * variables, and does return a Unix-style locale string based on
883 * either said environment variables or the thread's current locale.
885 * Return value: a dynamically allocated string, free with g_free().
889 _gtk_get_lc_ctype (void)
892 /* Somebody might try to set the locale for this process using the
893 * LANG or LC_ environment variables. The Microsoft C library
894 * doesn't know anything about them. You set the locale in the
895 * Control Panel. Setting these env vars won't have any affect on
896 * locale-dependent C library functions like ctime(). But just for
897 * kicks, do obey LC_ALL, LC_CTYPE and LANG in GTK. (This also makes
898 * it easier to test GTK and Pango in various default languages, you
899 * don't have to clickety-click in the Control Panel, you can simply
900 * start the program with LC_ALL=something on the command line.)
904 p = getenv ("LC_ALL");
908 p = getenv ("LC_CTYPE");
916 return g_win32_getlocale ();
918 return g_strdup (setlocale (LC_CTYPE, NULL));
923 * gtk_get_default_language:
925 * Returns the #PangoLanguage for the default language currently in
926 * effect. (Note that this can change over the life of an
927 * application.) The default language is derived from the current
928 * locale. It determines, for example, whether GTK+ uses the
929 * right-to-left or left-to-right text direction. See
930 * _gtk_get_lc_ctype() for notes on behaviour on Windows.
932 * Return value: the default language as a #PangoLanguage, must not be
936 gtk_get_default_language (void)
939 PangoLanguage *result;
942 lang = _gtk_get_lc_ctype ();
943 p = strchr (lang, '.');
946 p = strchr (lang, '@');
950 result = pango_language_from_string (lang);
961 GtkInitFunction *init;
964 gtk_main_loop_level++;
966 loop = g_main_loop_new (NULL, TRUE);
967 main_loops = g_slist_prepend (main_loops, loop);
969 tmp_list = functions = init_functions;
970 init_functions = NULL;
974 init = tmp_list->data;
975 tmp_list = tmp_list->next;
977 (* init->function) (init->data);
980 g_list_free (functions);
982 if (g_main_loop_is_running (main_loops->data))
984 GDK_THREADS_LEAVE ();
985 g_main_loop_run (loop);
986 GDK_THREADS_ENTER ();
992 GList *reinvoke_list = NULL;
993 GtkQuitFunction *quitf;
995 while (quit_functions)
997 quitf = quit_functions->data;
999 tmp_list = quit_functions;
1000 quit_functions = g_list_remove_link (quit_functions, quit_functions);
1001 g_list_free_1 (tmp_list);
1003 if ((quitf->main_level && quitf->main_level != gtk_main_loop_level) ||
1004 gtk_quit_invoke_function (quitf))
1006 reinvoke_list = g_list_prepend (reinvoke_list, quitf);
1010 gtk_quit_destroy (quitf);
1017 work = g_list_last (reinvoke_list);
1019 quit_functions->prev = work;
1020 work->next = quit_functions;
1021 quit_functions = work;
1027 main_loops = g_slist_remove (main_loops, loop);
1029 g_main_loop_unref (loop);
1031 gtk_main_loop_level--;
1033 /* Try storing all clipboard data we have */
1034 if (gtk_main_loop_level == 0)
1035 _gtk_clipboard_store_all ();
1039 gtk_main_level (void)
1041 return gtk_main_loop_level;
1045 gtk_main_quit (void)
1047 g_return_if_fail (main_loops != NULL);
1049 g_main_loop_quit (main_loops->data);
1053 gtk_events_pending (void)
1057 GDK_THREADS_LEAVE ();
1058 result = g_main_context_pending (NULL);
1059 GDK_THREADS_ENTER ();
1065 gtk_main_iteration (void)
1067 GDK_THREADS_LEAVE ();
1068 g_main_context_iteration (NULL, TRUE);
1069 GDK_THREADS_ENTER ();
1072 return !g_main_loop_is_running (main_loops->data);
1078 gtk_main_iteration_do (gboolean blocking)
1080 GDK_THREADS_LEAVE ();
1081 g_main_context_iteration (NULL, blocking);
1082 GDK_THREADS_ENTER ();
1085 return !g_main_loop_is_running (main_loops->data);
1090 /* private libgtk to libgdk interfaces
1092 gboolean gdk_pointer_grab_info_libgtk_only (GdkDisplay *display,
1093 GdkWindow **grab_window,
1094 gboolean *owner_events);
1095 gboolean gdk_keyboard_grab_info_libgtk_only (GdkDisplay *display,
1096 GdkWindow **grab_window,
1097 gboolean *owner_events);
1100 rewrite_events_translate (GdkWindow *old_window,
1101 GdkWindow *new_window,
1105 gint old_origin_x, old_origin_y;
1106 gint new_origin_x, new_origin_y;
1108 gdk_window_get_origin (old_window, &old_origin_x, &old_origin_y);
1109 gdk_window_get_origin (new_window, &new_origin_x, &new_origin_y);
1111 *x += old_origin_x - new_origin_x;
1112 *y += old_origin_y - new_origin_y;
1116 rewrite_event_for_window (GdkEvent *event,
1117 GdkWindow *new_window)
1119 event = gdk_event_copy (event);
1121 switch (event->type)
1124 rewrite_events_translate (event->any.window,
1126 &event->scroll.x, &event->scroll.y);
1128 case GDK_BUTTON_PRESS:
1129 case GDK_2BUTTON_PRESS:
1130 case GDK_3BUTTON_PRESS:
1131 case GDK_BUTTON_RELEASE:
1132 rewrite_events_translate (event->any.window,
1134 &event->button.x, &event->button.y);
1136 case GDK_MOTION_NOTIFY:
1137 rewrite_events_translate (event->any.window,
1139 &event->motion.x, &event->motion.y);
1142 case GDK_KEY_RELEASE:
1143 case GDK_PROXIMITY_IN:
1144 case GDK_PROXIMITY_OUT:
1151 g_object_unref (event->any.window);
1152 event->any.window = g_object_ref (new_window);
1157 /* If there is a pointer or keyboard grab in effect with owner_events = TRUE,
1158 * then what X11 does is deliver the event normally if it was going to this
1159 * client, otherwise, delivers it in terms of the grab window. This function
1160 * rewrites events to the effect that events going to the same window group
1161 * are delivered normally, otherwise, the event is delivered in terms of the
1165 rewrite_event_for_grabs (GdkEvent *event)
1167 GdkWindow *grab_window;
1168 GtkWidget *event_widget, *grab_widget;
1169 gboolean owner_events;
1170 GdkDisplay *display;
1172 switch (event->type)
1175 case GDK_BUTTON_PRESS:
1176 case GDK_2BUTTON_PRESS:
1177 case GDK_3BUTTON_PRESS:
1178 case GDK_BUTTON_RELEASE:
1179 case GDK_MOTION_NOTIFY:
1180 case GDK_PROXIMITY_IN:
1181 case GDK_PROXIMITY_OUT:
1182 display = gdk_drawable_get_display (event->proximity.window);
1183 if (!gdk_pointer_grab_info_libgtk_only (display, &grab_window, &owner_events) ||
1189 case GDK_KEY_RELEASE:
1190 display = gdk_drawable_get_display (event->key.window);
1191 if (!gdk_keyboard_grab_info_libgtk_only (display, &grab_window, &owner_events) ||
1200 event_widget = gtk_get_event_widget (event);
1201 gdk_window_get_user_data (grab_window, (void**) &grab_widget);
1204 gtk_main_get_window_group (grab_widget) != gtk_main_get_window_group (event_widget))
1205 return rewrite_event_for_window (event, grab_window);
1211 gtk_main_do_event (GdkEvent *event)
1213 GtkWidget *event_widget;
1214 GtkWidget *grab_widget;
1215 GtkWindowGroup *window_group;
1216 GdkEvent *next_event;
1217 GdkEvent *rewritten_event = NULL;
1220 /* If there are any events pending then get the next one.
1222 next_event = gdk_event_peek ();
1224 /* Try to compress enter/leave notify events. These event
1225 * pairs occur when the mouse is dragged quickly across
1226 * a window with many buttons (or through a menu). Instead
1227 * of highlighting and de-highlighting each widget that
1228 * is crossed it is better to simply de-highlight the widget
1229 * which contained the mouse initially and highlight the
1230 * widget which ends up containing the mouse.
1233 if (((event->type == GDK_ENTER_NOTIFY) ||
1234 (event->type == GDK_LEAVE_NOTIFY)) &&
1235 ((next_event->type == GDK_ENTER_NOTIFY) ||
1236 (next_event->type == GDK_LEAVE_NOTIFY)) &&
1237 (next_event->type != event->type) &&
1238 (next_event->any.window == event->any.window))
1240 /* Throw both the peeked copy and the queued copy away
1242 gdk_event_free (next_event);
1243 next_event = gdk_event_get ();
1244 gdk_event_free (next_event);
1250 gdk_event_free (next_event);
1252 if (event->type == GDK_SETTING)
1254 _gtk_settings_handle_event (&event->setting);
1258 if (event->type == GDK_OWNER_CHANGE)
1260 _gtk_clipboard_handle_event (&event->owner_change);
1264 /* Find the widget which got the event. We store the widget
1265 * in the user_data field of GdkWindow's.
1266 * Ignore the event if we don't have a widget for it, except
1267 * for GDK_PROPERTY_NOTIFY events which are handled specialy.
1268 * Though this happens rarely, bogus events can occour
1269 * for e.g. destroyed GdkWindows.
1271 event_widget = gtk_get_event_widget (event);
1274 /* To handle selection INCR transactions, we select
1275 * PropertyNotify events on the requestor window and create
1276 * a corresponding (fake) GdkWindow so that events get
1277 * here. There won't be a widget though, so we have to handle
1280 if (event->type == GDK_PROPERTY_NOTIFY)
1281 _gtk_selection_incr_event (event->any.window,
1287 /* If pointer or keyboard grabs are in effect, munge the events
1288 * so that each window group looks like a separate app.
1290 rewritten_event = rewrite_event_for_grabs (event);
1291 if (rewritten_event)
1293 event = rewritten_event;
1294 event_widget = gtk_get_event_widget (event);
1297 window_group = gtk_main_get_window_group (event_widget);
1299 /* Push the event onto a stack of current events for
1300 * gtk_current_event_get().
1302 current_events = g_list_prepend (current_events, event);
1304 /* If there is a grab in effect...
1306 if (window_group->grabs)
1308 grab_widget = window_group->grabs->data;
1310 /* If the grab widget is an ancestor of the event widget
1311 * then we send the event to the original event widget.
1312 * This is the key to implementing modality.
1314 if (GTK_WIDGET_IS_SENSITIVE (event_widget) &&
1315 gtk_widget_is_ancestor (event_widget, grab_widget))
1316 grab_widget = event_widget;
1320 grab_widget = event_widget;
1323 /* Not all events get sent to the grabbing widget.
1324 * The delete, destroy, expose, focus change and resize
1325 * events still get sent to the event widget because
1326 * 1) these events have no meaning for the grabbing widget
1327 * and 2) redirecting these events to the grabbing widget
1328 * could cause the display to be messed up.
1330 * Drag events are also not redirected, since it isn't
1331 * clear what the semantics of that would be.
1333 switch (event->type)
1339 g_object_ref (event_widget);
1340 if ((!window_group->grabs || gtk_widget_get_toplevel (window_group->grabs->data) == event_widget) &&
1341 !gtk_widget_event (event_widget, event))
1342 gtk_widget_destroy (event_widget);
1343 g_object_unref (event_widget);
1347 /* Unexpected GDK_DESTROY from the outside, ignore for
1348 * child windows, handle like a GDK_DELETE for toplevels
1350 if (!event_widget->parent)
1352 g_object_ref (event_widget);
1353 if (!gtk_widget_event (event_widget, event) &&
1354 GTK_WIDGET_REALIZED (event_widget))
1355 gtk_widget_destroy (event_widget);
1356 g_object_unref (event_widget);
1361 if (event->any.window && GTK_WIDGET_DOUBLE_BUFFERED (event_widget))
1363 gdk_window_begin_paint_region (event->any.window, event->expose.region);
1364 gtk_widget_send_expose (event_widget, event);
1365 gdk_window_end_paint (event->any.window);
1368 gtk_widget_send_expose (event_widget, event);
1371 case GDK_PROPERTY_NOTIFY:
1373 case GDK_FOCUS_CHANGE:
1377 case GDK_SELECTION_CLEAR:
1378 case GDK_SELECTION_REQUEST:
1379 case GDK_SELECTION_NOTIFY:
1380 case GDK_CLIENT_EVENT:
1381 case GDK_VISIBILITY_NOTIFY:
1382 case GDK_WINDOW_STATE:
1383 case GDK_GRAB_BROKEN:
1384 gtk_widget_event (event_widget, event);
1388 case GDK_BUTTON_PRESS:
1389 case GDK_2BUTTON_PRESS:
1390 case GDK_3BUTTON_PRESS:
1391 gtk_propagate_event (grab_widget, event);
1395 case GDK_KEY_RELEASE:
1398 if (gtk_invoke_key_snoopers (grab_widget, event))
1401 /* else fall through */
1402 case GDK_MOTION_NOTIFY:
1403 case GDK_BUTTON_RELEASE:
1404 case GDK_PROXIMITY_IN:
1405 case GDK_PROXIMITY_OUT:
1406 gtk_propagate_event (grab_widget, event);
1409 case GDK_ENTER_NOTIFY:
1410 if (GTK_WIDGET_IS_SENSITIVE (grab_widget))
1412 g_object_ref (event_widget);
1414 gtk_widget_event (grab_widget, event);
1415 if (event_widget == grab_widget)
1416 GTK_PRIVATE_SET_FLAG (event_widget, GTK_LEAVE_PENDING);
1418 g_object_unref (event_widget);
1422 case GDK_LEAVE_NOTIFY:
1423 if (GTK_WIDGET_LEAVE_PENDING (event_widget))
1425 GTK_PRIVATE_UNSET_FLAG (event_widget, GTK_LEAVE_PENDING);
1426 gtk_widget_event (event_widget, event);
1428 else if (GTK_WIDGET_IS_SENSITIVE (grab_widget))
1429 gtk_widget_event (grab_widget, event);
1432 case GDK_DRAG_STATUS:
1433 case GDK_DROP_FINISHED:
1434 _gtk_drag_source_handle_event (event_widget, event);
1436 case GDK_DRAG_ENTER:
1437 case GDK_DRAG_LEAVE:
1438 case GDK_DRAG_MOTION:
1439 case GDK_DROP_START:
1440 _gtk_drag_dest_handle_event (event_widget, event);
1443 g_assert_not_reached ();
1447 tmp_list = current_events;
1448 current_events = g_list_remove_link (current_events, tmp_list);
1449 g_list_free_1 (tmp_list);
1451 if (rewritten_event)
1452 gdk_event_free (rewritten_event);
1467 static GtkWindowGroup *
1468 gtk_main_get_window_group (GtkWidget *widget)
1470 GtkWidget *toplevel = NULL;
1473 toplevel = gtk_widget_get_toplevel (widget);
1475 if (toplevel && GTK_IS_WINDOW (toplevel))
1476 return _gtk_window_get_group (GTK_WINDOW (toplevel));
1478 return _gtk_window_get_group (NULL);
1483 GtkWidget *old_grab_widget;
1484 GtkWidget *new_grab_widget;
1488 check_is_grabbed (GtkWidget *widget,
1489 GtkWidget *grab_widget)
1492 return !(widget == grab_widget || gtk_widget_is_ancestor (widget, grab_widget));
1498 gtk_grab_notify_foreach (GtkWidget *child,
1502 GrabNotifyInfo *info = data;
1503 gboolean was_grabbed = check_is_grabbed (child, info->old_grab_widget);
1504 gboolean is_grabbed = check_is_grabbed (child, info->new_grab_widget);
1506 if (was_grabbed != is_grabbed)
1508 g_object_ref (child);
1510 _gtk_widget_grab_notify (child, was_grabbed);
1512 if (GTK_IS_CONTAINER (child))
1513 gtk_container_foreach (GTK_CONTAINER (child), gtk_grab_notify_foreach, info);
1515 g_object_unref (child);
1520 gtk_grab_notify (GtkWindowGroup *group,
1521 GtkWidget *grab_widget,
1522 gboolean was_grabbed)
1525 GrabNotifyInfo info;
1529 info.old_grab_widget = grab_widget;
1530 info.new_grab_widget = group->grabs ? group->grabs->data : NULL;
1534 info.old_grab_widget = (group->grabs && group->grabs->next) ? group->grabs->next->data : NULL;
1535 info.new_grab_widget = grab_widget;
1538 g_object_ref (group);
1539 g_object_ref (grab_widget);
1541 toplevels = gtk_window_list_toplevels ();
1542 g_list_foreach (toplevels, (GFunc)g_object_ref, NULL);
1546 GtkWindow *toplevel = toplevels->data;
1547 toplevels = g_list_delete_link (toplevels, toplevels);
1549 if (group == _gtk_window_get_group (toplevel))
1550 gtk_container_foreach (GTK_CONTAINER (toplevel), gtk_grab_notify_foreach, &info);
1551 g_object_unref (toplevel);
1554 g_object_unref (group);
1555 g_object_unref (grab_widget);
1559 gtk_grab_add (GtkWidget *widget)
1561 GtkWindowGroup *group;
1563 g_return_if_fail (widget != NULL);
1565 if (!GTK_WIDGET_HAS_GRAB (widget) && GTK_WIDGET_IS_SENSITIVE (widget))
1567 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_GRAB);
1569 group = gtk_main_get_window_group (widget);
1571 g_object_ref (widget);
1572 group->grabs = g_slist_prepend (group->grabs, widget);
1574 gtk_grab_notify (group, widget, FALSE);
1579 gtk_grab_get_current (void)
1581 GtkWindowGroup *group;
1583 group = gtk_main_get_window_group (NULL);
1586 return GTK_WIDGET (group->grabs->data);
1591 gtk_grab_remove (GtkWidget *widget)
1593 GtkWindowGroup *group;
1595 g_return_if_fail (widget != NULL);
1597 if (GTK_WIDGET_HAS_GRAB (widget))
1599 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_GRAB);
1601 group = gtk_main_get_window_group (widget);
1602 group->grabs = g_slist_remove (group->grabs, widget);
1604 g_object_unref (widget);
1606 gtk_grab_notify (group, widget, TRUE);
1611 gtk_init_add (GtkFunction function,
1614 GtkInitFunction *init;
1616 init = g_new (GtkInitFunction, 1);
1617 init->function = function;
1620 init_functions = g_list_prepend (init_functions, init);
1624 gtk_key_snooper_install (GtkKeySnoopFunc snooper,
1627 GtkKeySnooperData *data;
1628 static guint snooper_id = 1;
1630 g_return_val_if_fail (snooper != NULL, 0);
1632 data = g_new (GtkKeySnooperData, 1);
1633 data->func = snooper;
1634 data->func_data = func_data;
1635 data->id = snooper_id++;
1636 key_snoopers = g_slist_prepend (key_snoopers, data);
1642 gtk_key_snooper_remove (guint snooper_id)
1644 GtkKeySnooperData *data = NULL;
1647 slist = key_snoopers;
1651 if (data->id == snooper_id)
1654 slist = slist->next;
1659 key_snoopers = g_slist_remove (key_snoopers, data);
1665 gtk_invoke_key_snoopers (GtkWidget *grab_widget,
1669 gint return_val = FALSE;
1671 slist = key_snoopers;
1672 while (slist && !return_val)
1674 GtkKeySnooperData *data;
1677 slist = slist->next;
1678 return_val = (*data->func) (grab_widget, (GdkEventKey*) event, data->func_data);
1685 gtk_quit_add_full (guint main_level,
1686 GtkFunction function,
1687 GtkCallbackMarshal marshal,
1689 GtkDestroyNotify destroy)
1691 static guint quit_id = 1;
1692 GtkQuitFunction *quitf;
1694 g_return_val_if_fail ((function != NULL) || (marshal != NULL), 0);
1696 if (!quit_mem_chunk)
1697 quit_mem_chunk = g_mem_chunk_new ("quit mem chunk", sizeof (GtkQuitFunction),
1698 512, G_ALLOC_AND_FREE);
1700 quitf = g_chunk_new (GtkQuitFunction, quit_mem_chunk);
1702 quitf->id = quit_id++;
1703 quitf->main_level = main_level;
1704 quitf->function = function;
1705 quitf->marshal = marshal;
1707 quitf->destroy = destroy;
1709 quit_functions = g_list_prepend (quit_functions, quitf);
1715 gtk_quit_destroy (GtkQuitFunction *quitf)
1718 quitf->destroy (quitf->data);
1719 g_mem_chunk_free (quit_mem_chunk, quitf);
1723 gtk_quit_destructor (GtkObject **object_p)
1726 gtk_object_destroy (*object_p);
1733 gtk_quit_add_destroy (guint main_level,
1736 GtkObject **object_p;
1738 g_return_if_fail (main_level > 0);
1739 g_return_if_fail (GTK_IS_OBJECT (object));
1741 object_p = g_new (GtkObject*, 1);
1743 g_signal_connect (object,
1745 G_CALLBACK (gtk_widget_destroyed),
1747 gtk_quit_add (main_level, (GtkFunction) gtk_quit_destructor, object_p);
1751 gtk_quit_add (guint main_level,
1752 GtkFunction function,
1755 return gtk_quit_add_full (main_level, function, NULL, data, NULL);
1759 gtk_quit_remove (guint id)
1761 GtkQuitFunction *quitf;
1764 tmp_list = quit_functions;
1767 quitf = tmp_list->data;
1769 if (quitf->id == id)
1771 quit_functions = g_list_remove_link (quit_functions, tmp_list);
1772 g_list_free (tmp_list);
1773 gtk_quit_destroy (quitf);
1778 tmp_list = tmp_list->next;
1783 gtk_quit_remove_by_data (gpointer data)
1785 GtkQuitFunction *quitf;
1788 tmp_list = quit_functions;
1791 quitf = tmp_list->data;
1793 if (quitf->data == data)
1795 quit_functions = g_list_remove_link (quit_functions, tmp_list);
1796 g_list_free (tmp_list);
1797 gtk_quit_destroy (quitf);
1802 tmp_list = tmp_list->next;
1807 gtk_timeout_add_full (guint32 interval,
1808 GtkFunction function,
1809 GtkCallbackMarshal marshal,
1811 GtkDestroyNotify destroy)
1815 GtkClosure *closure;
1817 closure = g_new (GtkClosure, 1);
1818 closure->marshal = marshal;
1819 closure->data = data;
1820 closure->destroy = destroy;
1822 return g_timeout_add_full (0, interval,
1823 gtk_invoke_idle_timeout,
1825 gtk_destroy_closure);
1828 return g_timeout_add_full (0, interval, function, data, destroy);
1832 gtk_timeout_add (guint32 interval,
1833 GtkFunction function,
1836 return g_timeout_add_full (0, interval, function, data, NULL);
1840 gtk_timeout_remove (guint tag)
1842 g_source_remove (tag);
1846 gtk_idle_add_full (gint priority,
1847 GtkFunction function,
1848 GtkCallbackMarshal marshal,
1850 GtkDestroyNotify destroy)
1854 GtkClosure *closure;
1856 closure = g_new (GtkClosure, 1);
1857 closure->marshal = marshal;
1858 closure->data = data;
1859 closure->destroy = destroy;
1861 return g_idle_add_full (priority,
1862 gtk_invoke_idle_timeout,
1864 gtk_destroy_closure);
1867 return g_idle_add_full (priority, function, data, destroy);
1871 gtk_idle_add (GtkFunction function,
1874 return g_idle_add_full (G_PRIORITY_DEFAULT_IDLE, function, data, NULL);
1878 gtk_idle_add_priority (gint priority,
1879 GtkFunction function,
1882 return g_idle_add_full (priority, function, data, NULL);
1886 gtk_idle_remove (guint tag)
1888 g_source_remove (tag);
1892 gtk_idle_remove_by_data (gpointer data)
1894 if (!g_idle_remove_by_data (data))
1895 g_warning ("gtk_idle_remove_by_data(%p): no such idle", data);
1899 gtk_input_add_full (gint source,
1900 GdkInputCondition condition,
1901 GdkInputFunction function,
1902 GtkCallbackMarshal marshal,
1904 GtkDestroyNotify destroy)
1908 GtkClosure *closure;
1910 closure = g_new (GtkClosure, 1);
1911 closure->marshal = marshal;
1912 closure->data = data;
1913 closure->destroy = destroy;
1915 return gdk_input_add_full (source,
1917 (GdkInputFunction) gtk_invoke_input,
1919 (GdkDestroyNotify) gtk_destroy_closure);
1922 return gdk_input_add_full (source, condition, function, data, destroy);
1926 gtk_input_remove (guint tag)
1928 g_source_remove (tag);
1932 gtk_destroy_closure (gpointer data)
1934 GtkClosure *closure = data;
1936 if (closure->destroy)
1937 (closure->destroy) (closure->data);
1942 gtk_invoke_idle_timeout (gpointer data)
1944 GtkClosure *closure = data;
1947 gint ret_val = FALSE;
1948 args[0].name = NULL;
1949 args[0].type = G_TYPE_BOOLEAN;
1950 args[0].d.pointer_data = &ret_val;
1951 closure->marshal (NULL, closure->data, 0, args);
1956 gtk_invoke_input (gpointer data,
1958 GdkInputCondition condition)
1960 GtkClosure *closure = data;
1963 args[0].type = G_TYPE_INT;
1964 args[0].name = NULL;
1965 GTK_VALUE_INT (args[0]) = source;
1966 args[1].type = GDK_TYPE_INPUT_CONDITION;
1967 args[1].name = NULL;
1968 GTK_VALUE_FLAGS (args[1]) = condition;
1969 args[2].type = G_TYPE_NONE;
1970 args[2].name = NULL;
1972 closure->marshal (NULL, closure->data, 2, args);
1976 * gtk_get_current_event:
1978 * Obtains a copy of the event currently being processed by GTK+. For
1979 * example, if you get a "clicked" signal from #GtkButton, the current
1980 * event will be the #GdkEventButton that triggered the "clicked"
1981 * signal. The returned event must be freed with gdk_event_free().
1982 * If there is no current event, the function returns %NULL.
1984 * Return value: a copy of the current event, or %NULL if no current event.
1987 gtk_get_current_event (void)
1990 return gdk_event_copy (current_events->data);
1996 * gtk_get_current_event_time:
1998 * If there is a current event and it has a timestamp, return that
1999 * timestamp, otherwise return %GDK_CURRENT_TIME.
2001 * Return value: the timestamp from the current event, or %GDK_CURRENT_TIME.
2004 gtk_get_current_event_time (void)
2007 return gdk_event_get_time (current_events->data);
2009 return GDK_CURRENT_TIME;
2013 * gtk_get_current_event_state:
2014 * @state: a location to store the state of the current event
2016 * If there is a current event and it has a state field, place
2017 * that state field in @state and return %TRUE, otherwise return
2020 * Return value: %TRUE if there was a current event and it had a state field
2023 gtk_get_current_event_state (GdkModifierType *state)
2025 g_return_val_if_fail (state != NULL, FALSE);
2028 return gdk_event_get_state (current_events->data, state);
2037 * gtk_get_event_widget:
2038 * @event: a #GdkEvent
2040 * If @event is %NULL or the event was not associated with any widget,
2041 * returns %NULL, otherwise returns the widget that received the event
2044 * Return value: the widget that originally received @event, or %NULL
2047 gtk_get_event_widget (GdkEvent *event)
2052 if (event && event->any.window &&
2053 (event->type == GDK_DESTROY || !GDK_WINDOW_DESTROYED (event->any.window)))
2054 gdk_window_get_user_data (event->any.window, (void**) &widget);
2060 gtk_quit_invoke_function (GtkQuitFunction *quitf)
2062 if (!quitf->marshal)
2063 return quitf->function (quitf->data);
2067 gint ret_val = FALSE;
2069 args[0].name = NULL;
2070 args[0].type = G_TYPE_BOOLEAN;
2071 args[0].d.pointer_data = &ret_val;
2072 ((GtkCallbackMarshal) quitf->marshal) (NULL,
2080 * gtk_propagate_event:
2081 * @widget: a #GtkWidget
2084 * Sends an event to a widget, propagating the event to parent widgets
2085 * if the event remains unhandled. Events received by GTK+ from GDK
2086 * normally begin in gtk_main_do_event(). Depending on the type of
2087 * event, existence of modal dialogs, grabs, etc., the event may be
2088 * propagated; if so, this function is used. gtk_propagate_event()
2089 * calls gtk_widget_event() on each widget it decides to send the
2090 * event to. So gtk_widget_event() is the lowest-level function; it
2091 * simply emits the "event" and possibly an event-specific signal on a
2092 * widget. gtk_propagate_event() is a bit higher-level, and
2093 * gtk_main_do_event() is the highest level.
2095 * All that said, you most likely don't want to use any of these
2096 * functions; synthesizing events is rarely needed. Consider asking on
2097 * the mailing list for better ways to achieve your goals. For
2098 * example, use gdk_window_invalidate_rect() or
2099 * gtk_widget_queue_draw() instead of making up expose events.
2103 gtk_propagate_event (GtkWidget *widget,
2108 g_return_if_fail (GTK_IS_WIDGET (widget));
2109 g_return_if_fail (event != NULL);
2111 handled_event = FALSE;
2113 g_object_ref (widget);
2115 if ((event->type == GDK_KEY_PRESS) ||
2116 (event->type == GDK_KEY_RELEASE))
2118 /* Only send key events within Window widgets to the Window
2119 * The Window widget will in turn pass the
2120 * key event on to the currently focused widget
2125 window = gtk_widget_get_toplevel (widget);
2126 if (window && GTK_IS_WINDOW (window))
2128 /* If there is a grab within the window, give the grab widget
2129 * a first crack at the key event
2131 if (widget != window && GTK_WIDGET_HAS_GRAB (widget))
2132 handled_event = gtk_widget_event (widget, event);
2136 window = gtk_widget_get_toplevel (widget);
2137 if (window && GTK_IS_WINDOW (window))
2139 if (GTK_WIDGET_IS_SENSITIVE (window))
2140 gtk_widget_event (window, event);
2144 handled_event = TRUE; /* don't send to widget */
2148 /* Other events get propagated up the widget tree
2149 * so that parents can see the button and motion
2150 * events of the children.
2158 /* Scroll events are special cased here because it
2159 * feels wrong when scrolling a GtkViewport, say,
2160 * to have children of the viewport eat the scroll
2163 if (!GTK_WIDGET_IS_SENSITIVE (widget))
2164 handled_event = event->type != GDK_SCROLL;
2166 handled_event = gtk_widget_event (widget, event);
2168 tmp = widget->parent;
2169 g_object_unref (widget);
2173 if (!handled_event && widget)
2174 g_object_ref (widget);
2180 g_object_unref (widget);
2185 gtk_error (gchar *str)
2191 gtk_warning (gchar *str)
2197 gtk_message (gchar *str)
2203 gtk_print (gchar *str)
2205 static GtkWidget *window = NULL;
2206 static GtkWidget *text;
2207 static int level = 0;
2211 GtkWidget *hscrollbar;
2212 GtkWidget *vscrollbar;
2213 GtkWidget *separator;
2218 fputs (str, stdout);
2225 window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
2227 gtk_signal_connect (GTK_OBJECT (window), "destroy",
2228 (GtkSignalFunc) gtk_widget_destroyed,
2231 gtk_window_set_title (GTK_WINDOW (window), "Messages");
2233 box1 = gtk_vbox_new (FALSE, 0);
2234 gtk_container_add (GTK_CONTAINER (window), box1);
2235 gtk_widget_show (box1);
2238 box2 = gtk_vbox_new (FALSE, 10);
2239 gtk_container_set_border_width (GTK_CONTAINER (box2), 10);
2240 gtk_box_pack_start (GTK_BOX (box1), box2, TRUE, TRUE, 0);
2241 gtk_widget_show (box2);
2244 table = gtk_table_new (2, 2, FALSE);
2245 gtk_table_set_row_spacing (GTK_TABLE (table), 0, 2);
2246 gtk_table_set_col_spacing (GTK_TABLE (table), 0, 2);
2247 gtk_box_pack_start (GTK_BOX (box2), table, TRUE, TRUE, 0);
2248 gtk_widget_show (table);
2250 text = gtk_text_new (NULL, NULL);
2251 gtk_text_set_editable (GTK_TEXT (text), FALSE);
2252 gtk_table_attach_defaults (GTK_TABLE (table), text, 0, 1, 0, 1);
2253 gtk_widget_show (text);
2254 gtk_widget_realize (text);
2256 hscrollbar = gtk_hscrollbar_new (GTK_TEXT (text)->hadj);
2257 gtk_table_attach (GTK_TABLE (table), hscrollbar, 0, 1, 1, 2,
2258 GTK_EXPAND | GTK_FILL, GTK_FILL, 0, 0);
2259 gtk_widget_show (hscrollbar);
2261 vscrollbar = gtk_vscrollbar_new (GTK_TEXT (text)->vadj);
2262 gtk_table_attach (GTK_TABLE (table), vscrollbar, 1, 2, 0, 1,
2263 GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
2264 gtk_widget_show (vscrollbar);
2266 separator = gtk_hseparator_new ();
2267 gtk_box_pack_start (GTK_BOX (box1), separator, FALSE, TRUE, 0);
2268 gtk_widget_show (separator);
2271 box2 = gtk_vbox_new (FALSE, 10);
2272 gtk_container_set_border_width (GTK_CONTAINER (box2), 10);
2273 gtk_box_pack_start (GTK_BOX (box1), box2, FALSE, TRUE, 0);
2274 gtk_widget_show (box2);
2277 button = gtk_button_new_with_label ("close");
2278 gtk_signal_connect_object (GTK_OBJECT (button), "clicked",
2279 (GtkSignalFunc) gtk_widget_hide,
2280 GTK_OBJECT (window));
2281 gtk_box_pack_start (GTK_BOX (box2), button, TRUE, TRUE, 0);
2282 GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);
2283 gtk_widget_grab_default (button);
2284 gtk_widget_show (button);
2288 gtk_text_insert (GTK_TEXT (text), NULL, NULL, NULL, str, -1);
2291 if (!GTK_WIDGET_VISIBLE (window))
2292 gtk_widget_show (window);
2297 _gtk_boolean_handled_accumulator (GSignalInvocationHint *ihint,
2298 GValue *return_accu,
2299 const GValue *handler_return,
2302 gboolean continue_emission;
2303 gboolean signal_handled;
2305 signal_handled = g_value_get_boolean (handler_return);
2306 g_value_set_boolean (return_accu, signal_handled);
2307 continue_emission = !signal_handled;
2309 return continue_emission;
2312 #define __GTK_MAIN_C__
2313 #include "gtkaliasdef.c"