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)
300 gtk_localedir = g_win32_get_package_installation_subdirectory
301 (GETTEXT_PACKAGE, dll_name, "lib\\locale");
303 return gtk_localedir;
307 _gtk_get_sysconfdir (void)
309 static char *gtk_sysconfdir = NULL;
310 if (gtk_sysconfdir == NULL)
311 gtk_sysconfdir = g_win32_get_package_installation_subdirectory
312 (GETTEXT_PACKAGE, dll_name, "etc");
314 return gtk_sysconfdir;
318 _gtk_get_data_prefix (void)
320 static char *gtk_data_prefix = NULL;
321 if (gtk_data_prefix == NULL)
322 gtk_data_prefix = g_win32_get_package_installation_directory
323 (GETTEXT_PACKAGE, dll_name);
325 return gtk_data_prefix;
328 #endif /* G_OS_WIN32 */
330 static gboolean do_setlocale = TRUE;
333 * gtk_disable_setlocale:
335 * Prevents gtk_init(), gtk_init_check(), gtk_init_with_args() and
336 * gtk_parse_args() from automatically
337 * calling <literal>setlocale (LC_ALL, "")</literal>. You would
338 * want to use this function if you wanted to set the locale for
339 * your program to something other than the user's locale, or if
340 * you wanted to set different values for different locale categories.
342 * Most programs should not need to call this function.
345 gtk_disable_setlocale (void)
348 g_warning ("gtk_disable_setlocale() must be called before gtk_init()");
350 do_setlocale = FALSE;
353 #ifdef G_PLATFORM_WIN32
354 #undef gtk_init_check
357 static GString *gtk_modules_string = NULL;
358 static gboolean g_fatal_warnings = FALSE;
360 #ifdef G_ENABLE_DEBUG
362 gtk_arg_debug_cb (const char *key, const char *value, gpointer user_data)
364 gtk_debug_flags |= g_parse_debug_string (value,
372 gtk_arg_no_debug_cb (const char *key, const char *value, gpointer user_data)
374 gtk_debug_flags &= ~g_parse_debug_string (value,
380 #endif /* G_ENABLE_DEBUG */
383 gtk_arg_module_cb (const char *key, const char *value, gpointer user_data)
387 if (gtk_modules_string)
388 g_string_append_c (gtk_modules_string, G_SEARCHPATH_SEPARATOR);
390 gtk_modules_string = g_string_new (NULL);
392 g_string_append (gtk_modules_string, value);
398 static GOptionEntry gtk_args[] = {
399 { "gtk-module", 0, 0, G_OPTION_ARG_CALLBACK, gtk_arg_module_cb,
400 /* Description of --gtk-module=MODULES in --help output */ N_("Load additional GTK+ modules"),
401 /* Placeholder in --gtk-module=MODULES in --help output */ N_("MODULES") },
402 { "g-fatal-warnings", 0, 0, G_OPTION_ARG_NONE, &g_fatal_warnings,
403 /* Description of --g-fatal-warnings in --help output */ N_("Make all warnings fatal"), NULL },
404 #ifdef G_ENABLE_DEBUG
405 { "gtk-debug", 0, 0, G_OPTION_ARG_CALLBACK, gtk_arg_debug_cb,
406 /* Description of --gtk-debug=FLAGS in --help output */ N_("GTK+ debugging flags to set"),
407 /* Placeholder in --gtk-debug=FLAGS in --help output */ N_("FLAGS") },
408 { "gtk-no-debug", 0, 0, G_OPTION_ARG_CALLBACK, gtk_arg_no_debug_cb,
409 /* Description of --gtk-no-debug=FLAGS in --help output */ N_("GTK+ debugging flags to unset"),
410 /* Placeholder in --gtk-no-debug=FLAGS in --help output */ N_("FLAGS") },
416 do_pre_parse_initialization (int *argc,
419 const gchar *env_string;
422 g_set_error_handler (gtk_error);
423 g_set_warning_handler (gtk_warning);
424 g_set_message_handler (gtk_message);
425 g_set_print_handler (gtk_print);
430 if (!setlocale (LC_ALL, ""))
431 g_warning ("Locale not supported by C library.\n\tUsing the fallback 'C' locale.");
434 gdk_pre_parse_libgtk_only ();
435 gdk_event_handler_set ((GdkEventFunc)gtk_main_do_event, NULL, NULL);
437 #ifdef G_ENABLE_DEBUG
438 env_string = g_getenv ("GTK_DEBUG");
439 if (env_string != NULL)
441 gtk_debug_flags = g_parse_debug_string (env_string,
446 #endif /* G_ENABLE_DEBUG */
448 env_string = g_getenv ("GTK_MODULES");
450 gtk_modules_string = g_string_new (env_string);
454 gettext_initialization (void)
457 bindtextdomain (GETTEXT_PACKAGE, GTK_LOCALEDIR);
458 bindtextdomain (GETTEXT_PACKAGE "-properties", GTK_LOCALEDIR);
459 # ifdef HAVE_BIND_TEXTDOMAIN_CODESET
460 bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
461 bind_textdomain_codeset (GETTEXT_PACKAGE "-properties", "UTF-8");
467 do_post_parse_initialization (int *argc,
473 gettext_initialization ();
475 if (g_fatal_warnings)
477 GLogLevelFlags fatal_mask;
479 fatal_mask = g_log_set_always_fatal (G_LOG_FATAL_MASK);
480 fatal_mask |= G_LOG_LEVEL_WARNING | G_LOG_LEVEL_CRITICAL;
481 g_log_set_always_fatal (fatal_mask);
484 if (gtk_debug_flags & GTK_DEBUG_UPDATES)
485 gdk_window_set_debug_updates (TRUE);
488 /* Translate to default:RTL if you want your widgets
489 * to be RTL, otherwise translate to default:LTR.
490 * Do *not* translate it to "predefinito:LTR", if it
491 * it isn't default:LTR or default:RTL it will not work
493 char *e = _("default:LTR");
494 if (strcmp (e, "default:RTL")==0) {
495 gtk_widget_set_default_direction (GTK_TEXT_DIR_RTL);
496 } else if (strcmp (e, "default:LTR")) {
497 g_warning ("Whoever translated default:LTR did so wrongly.\n");
502 _gtk_accel_map_init ();
505 /* Set the 'initialized' flag.
507 gtk_initialized = TRUE;
509 /* load gtk modules */
510 if (gtk_modules_string)
512 _gtk_modules_init (argc, argv, gtk_modules_string->str);
513 g_string_free (gtk_modules_string, TRUE);
520 gboolean open_default_display;
524 pre_parse_hook (GOptionContext *context,
529 do_pre_parse_initialization (NULL, NULL);
535 post_parse_hook (GOptionContext *context,
540 OptionGroupInfo *info = data;
543 do_post_parse_initialization (NULL, NULL);
545 if (info->open_default_display)
546 return gdk_display_open_default_libgtk_only () != NULL;
553 * gtk_get_option_group:
554 * @open_default_display: whether to open the default display
555 * when parsing the commandline arguments
557 * Returns a #GOptionGroup for the commandline arguments recognized
558 * by GTK+ and GDK. You should add this group to your #GOptionContext
559 * with g_option_context_add_group(), if you are using
560 * g_option_context_parse() to parse your commandline arguments.
562 * Returns a #GOptionGroup for the commandline arguments recognized
568 gtk_get_option_group (gboolean open_default_display)
571 OptionGroupInfo *info;
573 info = g_new0 (OptionGroupInfo, 1);
574 info->open_default_display = open_default_display;
576 group = g_option_group_new ("gtk", _("GTK+ Options"), _("Show GTK+ Options"), info, g_free);
577 g_option_group_set_parse_hooks (group, pre_parse_hook, post_parse_hook);
579 gdk_add_option_entries_libgtk_only (group);
580 g_option_group_add_entries (group, gtk_args);
581 g_option_group_set_translation_domain (group, GETTEXT_PACKAGE);
587 * gtk_init_with_args:
588 * @argc: a pointer to the number of command line arguments.
589 * @argv: a pointer to the array of command line arguments.
590 * @parameter_string: a string which is displayed in
591 * the first line of <option>--help</option> output, after
592 * <literal><replaceable>programname</replaceable> [OPTION...]</literal>
593 * @entries: a %NULL-terminated array of #GOptionEntry<!-- -->s
594 * describing the options of your program
595 * @translation_domain: a translation domain to use for translating
596 * the <option>--help</option> output for the options in @entries
597 * with gettext(), or %NULL
598 * @error: a return location for errors
600 * This function does the same work as gtk_init_check().
601 * Additionally, it allows you to add your own commandline options,
602 * and it automatically generates nicely formatted
603 * <option>--help</option> output. Note that your program will
604 * be terminated after writing out the help output.
606 * Returns: %TRUE if the GUI has been successfully initialized,
612 gtk_init_with_args (int *argc,
614 char *parameter_string,
615 GOptionEntry *entries,
616 char *translation_domain,
619 GOptionContext *context;
620 GOptionGroup *gtk_group;
626 gettext_initialization ();
628 if (!check_setugid ())
631 gtk_group = gtk_get_option_group (TRUE);
633 context = g_option_context_new (parameter_string);
634 g_option_context_add_group (context, gtk_group);
637 g_option_context_add_main_entries (context, entries, translation_domain);
638 retval = g_option_context_parse (context, argc, argv, error);
640 g_option_context_free (context);
648 * @argc: a pointer to the number of command line arguments.
649 * @argv: a pointer to the array of command line arguments.
651 * Parses command line arguments, and initializes global
652 * attributes of GTK+, but does not actually open a connection
653 * to a display. (See gdk_display_open(), gdk_get_display_arg_name())
655 * Any arguments used by GTK+ or GDK are removed from the array and
656 * @argc and @argv are updated accordingly.
658 * You shouldn't call this function explicitely if you are using
659 * gtk_init(), or gtk_init_check().
661 * Return value: %TRUE if initialization succeeded, otherwise %FALSE.
664 gtk_parse_args (int *argc,
667 GOptionContext *option_context;
668 GOptionGroup *gtk_group;
673 gettext_initialization ();
675 if (!check_setugid ())
678 option_context = g_option_context_new (NULL);
679 g_option_context_set_ignore_unknown_options (option_context, TRUE);
680 g_option_context_set_help_enabled (option_context, FALSE);
681 gtk_group = gtk_get_option_group (FALSE);
682 g_option_context_set_main_group (option_context, gtk_group);
683 g_option_context_parse (option_context, argc, argv, NULL);
684 g_option_context_free (option_context);
689 #ifdef G_PLATFORM_WIN32
690 #undef gtk_init_check
695 * @argc: Address of the <parameter>argc</parameter> parameter of your
696 * main() function. Changed if any arguments were handled.
697 * @argv: Address of the <parameter>argv</parameter> parameter of main().
698 * Any parameters understood by gtk_init() are stripped before return.
700 * This function does the same work as gtk_init() with only
701 * a single change: It does not terminate the program if the GUI can't be
702 * initialized. Instead it returns %FALSE on failure.
704 * This way the application can fall back to some other means of communication
705 * with the user - for example a curses or command line interface.
707 * Return value: %TRUE if the GUI has been successfully initialized,
711 gtk_init_check (int *argc,
714 if (!gtk_parse_args (argc, argv))
717 return gdk_display_open_default_libgtk_only () != NULL;
720 #ifdef G_PLATFORM_WIN32
726 * @argc: Address of the <parameter>argc</parameter> parameter of your
727 * main() function. Changed if any arguments were handled.
728 * @argv: Address of the <parameter>argv</parameter> parameter of main().
729 * Any parameters understood by gtk_init() are stripped before return.
731 * Call this function before using any other GTK+ functions in your GUI
732 * applications. It will initialize everything needed to operate the
733 * toolkit and parses some standard command line options. @argc and
734 * @argv are adjusted accordingly so your own code will
735 * never see those standard arguments.
737 * Note that there are some alternative ways to initialize GTK+:
738 * if you are calling gtk_parse_args(), gtk_init_check(),
739 * gtk_init_with_args() or g_option_context_parse() with
740 * the option group returned by gtk_get_option_group(), you
741 * <emphasis>don't</emphasis> have to call gtk_init().
744 * This function will terminate your program if it was unable to initialize
745 * the GUI for some reason. If you want your program to fall back to a
746 * textual interface you want to call gtk_init_check() instead.
750 gtk_init (int *argc, char ***argv)
752 if (!gtk_init_check (argc, argv))
754 const char *display_name_arg = gdk_get_display_arg_name ();
755 g_warning ("cannot open display: %s", display_name_arg ? display_name_arg : " ");
760 #ifdef G_PLATFORM_WIN32
763 check_sizeof_GtkWindow (size_t sizeof_GtkWindow)
765 if (sizeof_GtkWindow != sizeof (GtkWindow))
766 g_error ("Incompatible build!\n"
767 "The code using GTK+ thinks GtkWindow is of different\n"
768 "size than it actually is in this build of GTK+.\n"
769 "On Windows, this probably means that you have compiled\n"
770 "your code with gcc without the -mms-bitfields switch,\n"
771 "or that you are using an unsupported compiler.");
774 /* In GTK+ 2.0 the GtkWindow struct actually is the same size in
775 * gcc-compiled code on Win32 whether compiled with -fnative-struct or
776 * not. Unfortunately this wan't noticed until after GTK+ 2.0.1. So,
777 * from GTK+ 2.0.2 on, check some other struct, too, where the use of
778 * -fnative-struct still matters. GtkBox is one such.
781 check_sizeof_GtkBox (size_t sizeof_GtkBox)
783 if (sizeof_GtkBox != sizeof (GtkBox))
784 g_error ("Incompatible build!\n"
785 "The code using GTK+ thinks GtkBox is of different\n"
786 "size than it actually is in this build of GTK+.\n"
787 "On Windows, this probably means that you have compiled\n"
788 "your code with gcc without the -mms-bitfields switch,\n"
789 "or that you are using an unsupported compiler.");
792 /* These two functions might get more checks added later, thus pass
793 * in the number of extra args.
796 gtk_init_abi_check (int *argc, char ***argv, int num_checks, size_t sizeof_GtkWindow, size_t sizeof_GtkBox)
798 check_sizeof_GtkWindow (sizeof_GtkWindow);
800 check_sizeof_GtkBox (sizeof_GtkBox);
801 gtk_init (argc, argv);
805 gtk_init_check_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 return gtk_init_check (argc, argv);
816 gtk_exit (gint errorcode)
825 * Initializes internationalization support for GTK+. gtk_init()
826 * automatically does this, so there is typically no point
827 * in calling this function.
829 * If you are calling this function because you changed the locale
830 * after GTK+ is was initialized, then calling this function
831 * may help a bit. (Note, however, that changing the locale
832 * after GTK+ is initialized may produce inconsistent results and
833 * is not really supported.)
835 * In detail - sets the current locale according to the
836 * program environment. This is the same as calling the C library function
837 * <literal>setlocale (LC_ALL, "")</literal> but also takes care of the
838 * locale specific setup of the windowing system used by GDK.
840 * Returns: a string corresponding to the locale set, typically in the
841 * form lang_COUNTRY, where lang is an ISO-639 language code, and
842 * COUNTRY is an ISO-3166 country code. On Unix, this form matches the
843 * result of the setlocale(); it is also used on other machines, such as
844 * Windows, where the C library returns a different result. The string is
845 * owned by GTK+ and should not be modified or freed.
848 gtk_set_locale (void)
850 return gdk_set_locale ();
856 * Return the Unix-style locale string for the language currently in
857 * effect. On Unix systems, this is the return value from
858 * <literal>setlocale(LC_CTYPE, NULL)</literal>, and the user can
859 * affect this through the environment variables LC_ALL, LC_CTYPE or
860 * LANG (checked in that order). The locale strings typically is in
861 * the form lang_COUNTRY, where lang is an ISO-639 language code, and
862 * COUNTRY is an ISO-3166 country code. For instance, sv_FI for
863 * Swedish as written in Finland or pt_BR for Portuguese as written in
866 * On Windows, the C library doesn't use any such environment
867 * variables, and setting them won't affect the behaviour of functions
868 * like ctime(). The user sets the locale through the Regional Options
869 * in the Control Panel. The C library (in the setlocale() function)
870 * does not use country and language codes, but country and language
871 * names spelled out in English.
872 * However, this function does check the above environment
873 * variables, and does return a Unix-style locale string based on
874 * either said environment variables or the thread's current locale.
876 * Return value: a dynamically allocated string, free with g_free().
880 _gtk_get_lc_ctype (void)
883 /* Somebody might try to set the locale for this process using the
884 * LANG or LC_ environment variables. The Microsoft C library
885 * doesn't know anything about them. You set the locale in the
886 * Control Panel. Setting these env vars won't have any affect on
887 * locale-dependent C library functions like ctime(). But just for
888 * kicks, do obey LC_ALL, LC_CTYPE and LANG in GTK. (This also makes
889 * it easier to test GTK and Pango in various default languages, you
890 * don't have to clickety-click in the Control Panel, you can simply
891 * start the program with LC_ALL=something on the command line.)
895 p = getenv ("LC_ALL");
899 p = getenv ("LC_CTYPE");
907 return g_win32_getlocale ();
909 return g_strdup (setlocale (LC_CTYPE, NULL));
914 * gtk_get_default_language:
916 * Returns the #PangoLanguage for the default language currently in
917 * effect. (Note that this can change over the life of an
918 * application.) The default language is derived from the current
919 * locale. It determines, for example, whether GTK+ uses the
920 * right-to-left or left-to-right text direction. See
921 * _gtk_get_lc_ctype() for notes on behaviour on Windows.
923 * Return value: the default language as a #PangoLanguage, must not be
927 gtk_get_default_language (void)
930 PangoLanguage *result;
933 lang = _gtk_get_lc_ctype ();
934 p = strchr (lang, '.');
937 p = strchr (lang, '@');
941 result = pango_language_from_string (lang);
952 GtkInitFunction *init;
955 gtk_main_loop_level++;
957 loop = g_main_loop_new (NULL, TRUE);
958 main_loops = g_slist_prepend (main_loops, loop);
960 tmp_list = functions = init_functions;
961 init_functions = NULL;
965 init = tmp_list->data;
966 tmp_list = tmp_list->next;
968 (* init->function) (init->data);
971 g_list_free (functions);
973 if (g_main_loop_is_running (main_loops->data))
975 GDK_THREADS_LEAVE ();
976 g_main_loop_run (loop);
977 GDK_THREADS_ENTER ();
983 GList *reinvoke_list = NULL;
984 GtkQuitFunction *quitf;
986 while (quit_functions)
988 quitf = quit_functions->data;
990 tmp_list = quit_functions;
991 quit_functions = g_list_remove_link (quit_functions, quit_functions);
992 g_list_free_1 (tmp_list);
994 if ((quitf->main_level && quitf->main_level != gtk_main_loop_level) ||
995 gtk_quit_invoke_function (quitf))
997 reinvoke_list = g_list_prepend (reinvoke_list, quitf);
1001 gtk_quit_destroy (quitf);
1008 work = g_list_last (reinvoke_list);
1010 quit_functions->prev = work;
1011 work->next = quit_functions;
1012 quit_functions = work;
1018 main_loops = g_slist_remove (main_loops, loop);
1020 g_main_loop_unref (loop);
1022 gtk_main_loop_level--;
1024 /* Try storing all clipboard data we have */
1025 if (gtk_main_loop_level == 0)
1026 _gtk_clipboard_store_all ();
1030 gtk_main_level (void)
1032 return gtk_main_loop_level;
1036 gtk_main_quit (void)
1038 g_return_if_fail (main_loops != NULL);
1040 g_main_loop_quit (main_loops->data);
1044 gtk_events_pending (void)
1048 GDK_THREADS_LEAVE ();
1049 result = g_main_context_pending (NULL);
1050 GDK_THREADS_ENTER ();
1056 gtk_main_iteration (void)
1058 GDK_THREADS_LEAVE ();
1059 g_main_context_iteration (NULL, TRUE);
1060 GDK_THREADS_ENTER ();
1063 return !g_main_loop_is_running (main_loops->data);
1069 gtk_main_iteration_do (gboolean blocking)
1071 GDK_THREADS_LEAVE ();
1072 g_main_context_iteration (NULL, blocking);
1073 GDK_THREADS_ENTER ();
1076 return !g_main_loop_is_running (main_loops->data);
1081 /* private libgtk to libgdk interfaces
1083 gboolean gdk_pointer_grab_info_libgtk_only (GdkDisplay *display,
1084 GdkWindow **grab_window,
1085 gboolean *owner_events);
1086 gboolean gdk_keyboard_grab_info_libgtk_only (GdkDisplay *display,
1087 GdkWindow **grab_window,
1088 gboolean *owner_events);
1091 rewrite_events_translate (GdkWindow *old_window,
1092 GdkWindow *new_window,
1096 gint old_origin_x, old_origin_y;
1097 gint new_origin_x, new_origin_y;
1099 gdk_window_get_origin (old_window, &old_origin_x, &old_origin_y);
1100 gdk_window_get_origin (new_window, &new_origin_x, &new_origin_y);
1102 *x += old_origin_x - new_origin_x;
1103 *y += old_origin_y - new_origin_y;
1107 rewrite_event_for_window (GdkEvent *event,
1108 GdkWindow *new_window)
1110 event = gdk_event_copy (event);
1112 switch (event->type)
1115 rewrite_events_translate (event->any.window,
1117 &event->scroll.x, &event->scroll.y);
1119 case GDK_BUTTON_PRESS:
1120 case GDK_2BUTTON_PRESS:
1121 case GDK_3BUTTON_PRESS:
1122 case GDK_BUTTON_RELEASE:
1123 rewrite_events_translate (event->any.window,
1125 &event->button.x, &event->button.y);
1127 case GDK_MOTION_NOTIFY:
1128 rewrite_events_translate (event->any.window,
1130 &event->motion.x, &event->motion.y);
1133 case GDK_KEY_RELEASE:
1134 case GDK_PROXIMITY_IN:
1135 case GDK_PROXIMITY_OUT:
1142 g_object_unref (event->any.window);
1143 event->any.window = g_object_ref (new_window);
1148 /* If there is a pointer or keyboard grab in effect with owner_events = TRUE,
1149 * then what X11 does is deliver the event normally if it was going to this
1150 * client, otherwise, delivers it in terms of the grab window. This function
1151 * rewrites events to the effect that events going to the same window group
1152 * are delivered normally, otherwise, the event is delivered in terms of the
1156 rewrite_event_for_grabs (GdkEvent *event)
1158 GdkWindow *grab_window;
1159 GtkWidget *event_widget, *grab_widget;
1160 gboolean owner_events;
1161 GdkDisplay *display;
1163 switch (event->type)
1166 case GDK_BUTTON_PRESS:
1167 case GDK_2BUTTON_PRESS:
1168 case GDK_3BUTTON_PRESS:
1169 case GDK_BUTTON_RELEASE:
1170 case GDK_MOTION_NOTIFY:
1171 case GDK_PROXIMITY_IN:
1172 case GDK_PROXIMITY_OUT:
1173 display = gdk_drawable_get_display (event->proximity.window);
1174 if (!gdk_pointer_grab_info_libgtk_only (display, &grab_window, &owner_events) ||
1180 case GDK_KEY_RELEASE:
1181 display = gdk_drawable_get_display (event->key.window);
1182 if (!gdk_keyboard_grab_info_libgtk_only (display, &grab_window, &owner_events) ||
1191 event_widget = gtk_get_event_widget (event);
1192 gdk_window_get_user_data (grab_window, (void**) &grab_widget);
1195 gtk_main_get_window_group (grab_widget) != gtk_main_get_window_group (event_widget))
1196 return rewrite_event_for_window (event, grab_window);
1202 gtk_main_do_event (GdkEvent *event)
1204 GtkWidget *event_widget;
1205 GtkWidget *grab_widget;
1206 GtkWindowGroup *window_group;
1207 GdkEvent *next_event;
1208 GdkEvent *rewritten_event = NULL;
1211 /* If there are any events pending then get the next one.
1213 next_event = gdk_event_peek ();
1215 /* Try to compress enter/leave notify events. These event
1216 * pairs occur when the mouse is dragged quickly across
1217 * a window with many buttons (or through a menu). Instead
1218 * of highlighting and de-highlighting each widget that
1219 * is crossed it is better to simply de-highlight the widget
1220 * which contained the mouse initially and highlight the
1221 * widget which ends up containing the mouse.
1224 if (((event->type == GDK_ENTER_NOTIFY) ||
1225 (event->type == GDK_LEAVE_NOTIFY)) &&
1226 ((next_event->type == GDK_ENTER_NOTIFY) ||
1227 (next_event->type == GDK_LEAVE_NOTIFY)) &&
1228 (next_event->type != event->type) &&
1229 (next_event->any.window == event->any.window))
1231 /* Throw both the peeked copy and the queued copy away
1233 gdk_event_free (next_event);
1234 next_event = gdk_event_get ();
1235 gdk_event_free (next_event);
1241 gdk_event_free (next_event);
1243 if (event->type == GDK_SETTING)
1245 _gtk_settings_handle_event (&event->setting);
1249 if (event->type == GDK_OWNER_CHANGE)
1251 _gtk_clipboard_handle_event (&event->owner_change);
1255 /* Find the widget which got the event. We store the widget
1256 * in the user_data field of GdkWindow's.
1257 * Ignore the event if we don't have a widget for it, except
1258 * for GDK_PROPERTY_NOTIFY events which are handled specialy.
1259 * Though this happens rarely, bogus events can occour
1260 * for e.g. destroyed GdkWindows.
1262 event_widget = gtk_get_event_widget (event);
1265 /* To handle selection INCR transactions, we select
1266 * PropertyNotify events on the requestor window and create
1267 * a corresponding (fake) GdkWindow so that events get
1268 * here. There won't be a widget though, so we have to handle
1271 if (event->type == GDK_PROPERTY_NOTIFY)
1272 _gtk_selection_incr_event (event->any.window,
1278 /* If pointer or keyboard grabs are in effect, munge the events
1279 * so that each window group looks like a separate app.
1281 rewritten_event = rewrite_event_for_grabs (event);
1282 if (rewritten_event)
1284 event = rewritten_event;
1285 event_widget = gtk_get_event_widget (event);
1288 window_group = gtk_main_get_window_group (event_widget);
1290 /* Push the event onto a stack of current events for
1291 * gtk_current_event_get().
1293 current_events = g_list_prepend (current_events, event);
1295 /* If there is a grab in effect...
1297 if (window_group->grabs)
1299 grab_widget = window_group->grabs->data;
1301 /* If the grab widget is an ancestor of the event widget
1302 * then we send the event to the original event widget.
1303 * This is the key to implementing modality.
1305 if (GTK_WIDGET_IS_SENSITIVE (event_widget) &&
1306 gtk_widget_is_ancestor (event_widget, grab_widget))
1307 grab_widget = event_widget;
1311 grab_widget = event_widget;
1314 /* Not all events get sent to the grabbing widget.
1315 * The delete, destroy, expose, focus change and resize
1316 * events still get sent to the event widget because
1317 * 1) these events have no meaning for the grabbing widget
1318 * and 2) redirecting these events to the grabbing widget
1319 * could cause the display to be messed up.
1321 * Drag events are also not redirected, since it isn't
1322 * clear what the semantics of that would be.
1324 switch (event->type)
1330 g_object_ref (event_widget);
1331 if ((!window_group->grabs || gtk_widget_get_toplevel (window_group->grabs->data) == event_widget) &&
1332 !gtk_widget_event (event_widget, event))
1333 gtk_widget_destroy (event_widget);
1334 g_object_unref (event_widget);
1338 /* Unexpected GDK_DESTROY from the outside, ignore for
1339 * child windows, handle like a GDK_DELETE for toplevels
1341 if (!event_widget->parent)
1343 g_object_ref (event_widget);
1344 if (!gtk_widget_event (event_widget, event) &&
1345 GTK_WIDGET_REALIZED (event_widget))
1346 gtk_widget_destroy (event_widget);
1347 g_object_unref (event_widget);
1352 if (event->any.window && GTK_WIDGET_DOUBLE_BUFFERED (event_widget))
1354 gdk_window_begin_paint_region (event->any.window, event->expose.region);
1355 gtk_widget_send_expose (event_widget, event);
1356 gdk_window_end_paint (event->any.window);
1359 gtk_widget_send_expose (event_widget, event);
1362 case GDK_PROPERTY_NOTIFY:
1364 case GDK_FOCUS_CHANGE:
1368 case GDK_SELECTION_CLEAR:
1369 case GDK_SELECTION_REQUEST:
1370 case GDK_SELECTION_NOTIFY:
1371 case GDK_CLIENT_EVENT:
1372 case GDK_VISIBILITY_NOTIFY:
1373 case GDK_WINDOW_STATE:
1374 case GDK_GRAB_BROKEN:
1375 gtk_widget_event (event_widget, event);
1379 case GDK_BUTTON_PRESS:
1380 case GDK_2BUTTON_PRESS:
1381 case GDK_3BUTTON_PRESS:
1382 gtk_propagate_event (grab_widget, event);
1386 case GDK_KEY_RELEASE:
1389 if (gtk_invoke_key_snoopers (grab_widget, event))
1392 /* else fall through */
1393 case GDK_MOTION_NOTIFY:
1394 case GDK_BUTTON_RELEASE:
1395 case GDK_PROXIMITY_IN:
1396 case GDK_PROXIMITY_OUT:
1397 gtk_propagate_event (grab_widget, event);
1400 case GDK_ENTER_NOTIFY:
1401 if (GTK_WIDGET_IS_SENSITIVE (grab_widget))
1403 g_object_ref (event_widget);
1405 gtk_widget_event (grab_widget, event);
1406 if (event_widget == grab_widget)
1407 GTK_PRIVATE_SET_FLAG (event_widget, GTK_LEAVE_PENDING);
1409 g_object_unref (event_widget);
1413 case GDK_LEAVE_NOTIFY:
1414 if (GTK_WIDGET_LEAVE_PENDING (event_widget))
1416 GTK_PRIVATE_UNSET_FLAG (event_widget, GTK_LEAVE_PENDING);
1417 gtk_widget_event (event_widget, event);
1419 else if (GTK_WIDGET_IS_SENSITIVE (grab_widget))
1420 gtk_widget_event (grab_widget, event);
1423 case GDK_DRAG_STATUS:
1424 case GDK_DROP_FINISHED:
1425 _gtk_drag_source_handle_event (event_widget, event);
1427 case GDK_DRAG_ENTER:
1428 case GDK_DRAG_LEAVE:
1429 case GDK_DRAG_MOTION:
1430 case GDK_DROP_START:
1431 _gtk_drag_dest_handle_event (event_widget, event);
1434 g_assert_not_reached ();
1438 tmp_list = current_events;
1439 current_events = g_list_remove_link (current_events, tmp_list);
1440 g_list_free_1 (tmp_list);
1442 if (rewritten_event)
1443 gdk_event_free (rewritten_event);
1458 static GtkWindowGroup *
1459 gtk_main_get_window_group (GtkWidget *widget)
1461 GtkWidget *toplevel = NULL;
1464 toplevel = gtk_widget_get_toplevel (widget);
1466 if (toplevel && GTK_IS_WINDOW (toplevel))
1467 return _gtk_window_get_group (GTK_WINDOW (toplevel));
1469 return _gtk_window_get_group (NULL);
1474 GtkWidget *old_grab_widget;
1475 GtkWidget *new_grab_widget;
1479 check_is_grabbed (GtkWidget *widget,
1480 GtkWidget *grab_widget)
1483 return !(widget == grab_widget || gtk_widget_is_ancestor (widget, grab_widget));
1489 gtk_grab_notify_foreach (GtkWidget *child,
1493 GrabNotifyInfo *info = data;
1494 gboolean was_grabbed = check_is_grabbed (child, info->old_grab_widget);
1495 gboolean is_grabbed = check_is_grabbed (child, info->new_grab_widget);
1497 if (was_grabbed != is_grabbed)
1499 g_object_ref (child);
1501 _gtk_widget_grab_notify (child, was_grabbed);
1503 if (GTK_IS_CONTAINER (child))
1504 gtk_container_foreach (GTK_CONTAINER (child), gtk_grab_notify_foreach, info);
1506 g_object_unref (child);
1511 gtk_grab_notify (GtkWindowGroup *group,
1512 GtkWidget *grab_widget,
1513 gboolean was_grabbed)
1516 GrabNotifyInfo info;
1520 info.old_grab_widget = grab_widget;
1521 info.new_grab_widget = group->grabs ? group->grabs->data : NULL;
1525 info.old_grab_widget = (group->grabs && group->grabs->next) ? group->grabs->next->data : NULL;
1526 info.new_grab_widget = grab_widget;
1529 g_object_ref (group);
1530 g_object_ref (grab_widget);
1532 toplevels = gtk_window_list_toplevels ();
1533 g_list_foreach (toplevels, (GFunc)g_object_ref, NULL);
1537 GtkWindow *toplevel = toplevels->data;
1538 toplevels = g_list_delete_link (toplevels, toplevels);
1540 if (group == _gtk_window_get_group (toplevel))
1541 gtk_container_foreach (GTK_CONTAINER (toplevel), gtk_grab_notify_foreach, &info);
1542 g_object_unref (toplevel);
1545 g_object_unref (group);
1546 g_object_unref (grab_widget);
1550 gtk_grab_add (GtkWidget *widget)
1552 GtkWindowGroup *group;
1553 gboolean was_grabbed;
1555 g_return_if_fail (widget != NULL);
1557 if (!GTK_WIDGET_HAS_GRAB (widget) && GTK_WIDGET_IS_SENSITIVE (widget))
1559 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_GRAB);
1561 group = gtk_main_get_window_group (widget);
1563 was_grabbed = (group->grabs != NULL);
1565 g_object_ref (widget);
1566 group->grabs = g_slist_prepend (group->grabs, widget);
1568 gtk_grab_notify (group, widget, FALSE);
1573 gtk_grab_get_current (void)
1575 GtkWindowGroup *group;
1577 group = gtk_main_get_window_group (NULL);
1580 return GTK_WIDGET (group->grabs->data);
1585 gtk_grab_remove (GtkWidget *widget)
1587 GtkWindowGroup *group;
1589 g_return_if_fail (widget != NULL);
1591 if (GTK_WIDGET_HAS_GRAB (widget))
1593 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_GRAB);
1595 group = gtk_main_get_window_group (widget);
1596 group->grabs = g_slist_remove (group->grabs, widget);
1598 g_object_unref (widget);
1600 gtk_grab_notify (group, widget, TRUE);
1605 gtk_init_add (GtkFunction function,
1608 GtkInitFunction *init;
1610 init = g_new (GtkInitFunction, 1);
1611 init->function = function;
1614 init_functions = g_list_prepend (init_functions, init);
1618 gtk_key_snooper_install (GtkKeySnoopFunc snooper,
1621 GtkKeySnooperData *data;
1622 static guint snooper_id = 1;
1624 g_return_val_if_fail (snooper != NULL, 0);
1626 data = g_new (GtkKeySnooperData, 1);
1627 data->func = snooper;
1628 data->func_data = func_data;
1629 data->id = snooper_id++;
1630 key_snoopers = g_slist_prepend (key_snoopers, data);
1636 gtk_key_snooper_remove (guint snooper_id)
1638 GtkKeySnooperData *data = NULL;
1641 slist = key_snoopers;
1645 if (data->id == snooper_id)
1648 slist = slist->next;
1653 key_snoopers = g_slist_remove (key_snoopers, data);
1659 gtk_invoke_key_snoopers (GtkWidget *grab_widget,
1663 gint return_val = FALSE;
1665 slist = key_snoopers;
1666 while (slist && !return_val)
1668 GtkKeySnooperData *data;
1671 slist = slist->next;
1672 return_val = (*data->func) (grab_widget, (GdkEventKey*) event, data->func_data);
1679 gtk_quit_add_full (guint main_level,
1680 GtkFunction function,
1681 GtkCallbackMarshal marshal,
1683 GtkDestroyNotify destroy)
1685 static guint quit_id = 1;
1686 GtkQuitFunction *quitf;
1688 g_return_val_if_fail ((function != NULL) || (marshal != NULL), 0);
1690 if (!quit_mem_chunk)
1691 quit_mem_chunk = g_mem_chunk_new ("quit mem chunk", sizeof (GtkQuitFunction),
1692 512, G_ALLOC_AND_FREE);
1694 quitf = g_chunk_new (GtkQuitFunction, quit_mem_chunk);
1696 quitf->id = quit_id++;
1697 quitf->main_level = main_level;
1698 quitf->function = function;
1699 quitf->marshal = marshal;
1701 quitf->destroy = destroy;
1703 quit_functions = g_list_prepend (quit_functions, quitf);
1709 gtk_quit_destroy (GtkQuitFunction *quitf)
1712 quitf->destroy (quitf->data);
1713 g_mem_chunk_free (quit_mem_chunk, quitf);
1717 gtk_quit_destructor (GtkObject **object_p)
1720 gtk_object_destroy (*object_p);
1727 gtk_quit_add_destroy (guint main_level,
1730 GtkObject **object_p;
1732 g_return_if_fail (main_level > 0);
1733 g_return_if_fail (GTK_IS_OBJECT (object));
1735 object_p = g_new (GtkObject*, 1);
1737 g_signal_connect (object,
1739 G_CALLBACK (gtk_widget_destroyed),
1741 gtk_quit_add (main_level, (GtkFunction) gtk_quit_destructor, object_p);
1745 gtk_quit_add (guint main_level,
1746 GtkFunction function,
1749 return gtk_quit_add_full (main_level, function, NULL, data, NULL);
1753 gtk_quit_remove (guint id)
1755 GtkQuitFunction *quitf;
1758 tmp_list = quit_functions;
1761 quitf = tmp_list->data;
1763 if (quitf->id == id)
1765 quit_functions = g_list_remove_link (quit_functions, tmp_list);
1766 g_list_free (tmp_list);
1767 gtk_quit_destroy (quitf);
1772 tmp_list = tmp_list->next;
1777 gtk_quit_remove_by_data (gpointer data)
1779 GtkQuitFunction *quitf;
1782 tmp_list = quit_functions;
1785 quitf = tmp_list->data;
1787 if (quitf->data == data)
1789 quit_functions = g_list_remove_link (quit_functions, tmp_list);
1790 g_list_free (tmp_list);
1791 gtk_quit_destroy (quitf);
1796 tmp_list = tmp_list->next;
1801 gtk_timeout_add_full (guint32 interval,
1802 GtkFunction function,
1803 GtkCallbackMarshal marshal,
1805 GtkDestroyNotify destroy)
1809 GtkClosure *closure;
1811 closure = g_new (GtkClosure, 1);
1812 closure->marshal = marshal;
1813 closure->data = data;
1814 closure->destroy = destroy;
1816 return g_timeout_add_full (0, interval,
1817 gtk_invoke_idle_timeout,
1819 gtk_destroy_closure);
1822 return g_timeout_add_full (0, interval, function, data, destroy);
1826 gtk_timeout_add (guint32 interval,
1827 GtkFunction function,
1830 return g_timeout_add_full (0, interval, function, data, NULL);
1834 gtk_timeout_remove (guint tag)
1836 g_source_remove (tag);
1840 gtk_idle_add_full (gint priority,
1841 GtkFunction function,
1842 GtkCallbackMarshal marshal,
1844 GtkDestroyNotify destroy)
1848 GtkClosure *closure;
1850 closure = g_new (GtkClosure, 1);
1851 closure->marshal = marshal;
1852 closure->data = data;
1853 closure->destroy = destroy;
1855 return g_idle_add_full (priority,
1856 gtk_invoke_idle_timeout,
1858 gtk_destroy_closure);
1861 return g_idle_add_full (priority, function, data, destroy);
1865 gtk_idle_add (GtkFunction function,
1868 return g_idle_add_full (G_PRIORITY_DEFAULT_IDLE, function, data, NULL);
1872 gtk_idle_add_priority (gint priority,
1873 GtkFunction function,
1876 return g_idle_add_full (priority, function, data, NULL);
1880 gtk_idle_remove (guint tag)
1882 g_source_remove (tag);
1886 gtk_idle_remove_by_data (gpointer data)
1888 if (!g_idle_remove_by_data (data))
1889 g_warning ("gtk_idle_remove_by_data(%p): no such idle", data);
1893 gtk_input_add_full (gint source,
1894 GdkInputCondition condition,
1895 GdkInputFunction function,
1896 GtkCallbackMarshal marshal,
1898 GtkDestroyNotify destroy)
1902 GtkClosure *closure;
1904 closure = g_new (GtkClosure, 1);
1905 closure->marshal = marshal;
1906 closure->data = data;
1907 closure->destroy = destroy;
1909 return gdk_input_add_full (source,
1911 (GdkInputFunction) gtk_invoke_input,
1913 (GdkDestroyNotify) gtk_destroy_closure);
1916 return gdk_input_add_full (source, condition, function, data, destroy);
1920 gtk_input_remove (guint tag)
1922 g_source_remove (tag);
1926 gtk_destroy_closure (gpointer data)
1928 GtkClosure *closure = data;
1930 if (closure->destroy)
1931 (closure->destroy) (closure->data);
1936 gtk_invoke_idle_timeout (gpointer data)
1938 GtkClosure *closure = data;
1941 gint ret_val = FALSE;
1942 args[0].name = NULL;
1943 args[0].type = G_TYPE_BOOLEAN;
1944 args[0].d.pointer_data = &ret_val;
1945 closure->marshal (NULL, closure->data, 0, args);
1950 gtk_invoke_input (gpointer data,
1952 GdkInputCondition condition)
1954 GtkClosure *closure = data;
1957 args[0].type = G_TYPE_INT;
1958 args[0].name = NULL;
1959 GTK_VALUE_INT (args[0]) = source;
1960 args[1].type = GDK_TYPE_INPUT_CONDITION;
1961 args[1].name = NULL;
1962 GTK_VALUE_FLAGS (args[1]) = condition;
1963 args[2].type = G_TYPE_NONE;
1964 args[2].name = NULL;
1966 closure->marshal (NULL, closure->data, 2, args);
1970 * gtk_get_current_event:
1972 * Obtains a copy of the event currently being processed by GTK+. For
1973 * example, if you get a "clicked" signal from #GtkButton, the current
1974 * event will be the #GdkEventButton that triggered the "clicked"
1975 * signal. The returned event must be freed with gdk_event_free().
1976 * If there is no current event, the function returns %NULL.
1978 * Return value: a copy of the current event, or %NULL if no current event.
1981 gtk_get_current_event (void)
1984 return gdk_event_copy (current_events->data);
1990 * gtk_get_current_event_time:
1992 * If there is a current event and it has a timestamp, return that
1993 * timestamp, otherwise return %GDK_CURRENT_TIME.
1995 * Return value: the timestamp from the current event, or %GDK_CURRENT_TIME.
1998 gtk_get_current_event_time (void)
2001 return gdk_event_get_time (current_events->data);
2003 return GDK_CURRENT_TIME;
2007 * gtk_get_current_event_state:
2008 * @state: a location to store the state of the current event
2010 * If there is a current event and it has a state field, place
2011 * that state field in @state and return %TRUE, otherwise return
2014 * Return value: %TRUE if there was a current event and it had a state field
2017 gtk_get_current_event_state (GdkModifierType *state)
2019 g_return_val_if_fail (state != NULL, FALSE);
2022 return gdk_event_get_state (current_events->data, state);
2031 * gtk_get_event_widget:
2032 * @event: a #GdkEvent
2034 * If @event is %NULL or the event was not associated with any widget,
2035 * returns %NULL, otherwise returns the widget that received the event
2038 * Return value: the widget that originally received @event, or %NULL
2041 gtk_get_event_widget (GdkEvent *event)
2046 if (event && event->any.window &&
2047 (event->type == GDK_DESTROY || !GDK_WINDOW_DESTROYED (event->any.window)))
2048 gdk_window_get_user_data (event->any.window, (void**) &widget);
2054 gtk_quit_invoke_function (GtkQuitFunction *quitf)
2056 if (!quitf->marshal)
2057 return quitf->function (quitf->data);
2061 gint ret_val = FALSE;
2063 args[0].name = NULL;
2064 args[0].type = G_TYPE_BOOLEAN;
2065 args[0].d.pointer_data = &ret_val;
2066 ((GtkCallbackMarshal) quitf->marshal) (NULL,
2074 * gtk_propagate_event:
2075 * @widget: a #GtkWidget
2078 * Sends an event to a widget, propagating the event to parent widgets
2079 * if the event remains unhandled. Events received by GTK+ from GDK
2080 * normally begin in gtk_main_do_event(). Depending on the type of
2081 * event, existence of modal dialogs, grabs, etc., the event may be
2082 * propagated; if so, this function is used. gtk_propagate_event()
2083 * calls gtk_widget_event() on each widget it decides to send the
2084 * event to. So gtk_widget_event() is the lowest-level function; it
2085 * simply emits the "event" and possibly an event-specific signal on a
2086 * widget. gtk_propagate_event() is a bit higher-level, and
2087 * gtk_main_do_event() is the highest level.
2089 * All that said, you most likely don't want to use any of these
2090 * functions; synthesizing events is rarely needed. Consider asking on
2091 * the mailing list for better ways to achieve your goals. For
2092 * example, use gdk_window_invalidate_rect() or
2093 * gtk_widget_queue_draw() instead of making up expose events.
2097 gtk_propagate_event (GtkWidget *widget,
2102 g_return_if_fail (GTK_IS_WIDGET (widget));
2103 g_return_if_fail (event != NULL);
2105 handled_event = FALSE;
2107 g_object_ref (widget);
2109 if ((event->type == GDK_KEY_PRESS) ||
2110 (event->type == GDK_KEY_RELEASE))
2112 /* Only send key events within Window widgets to the Window
2113 * The Window widget will in turn pass the
2114 * key event on to the currently focused widget
2119 window = gtk_widget_get_toplevel (widget);
2120 if (window && GTK_IS_WINDOW (window))
2122 /* If there is a grab within the window, give the grab widget
2123 * a first crack at the key event
2125 if (widget != window && GTK_WIDGET_HAS_GRAB (widget))
2126 handled_event = gtk_widget_event (widget, event);
2130 window = gtk_widget_get_toplevel (widget);
2131 if (window && GTK_IS_WINDOW (window))
2133 if (GTK_WIDGET_IS_SENSITIVE (window))
2134 gtk_widget_event (window, event);
2138 handled_event = TRUE; /* don't send to widget */
2142 /* Other events get propagated up the widget tree
2143 * so that parents can see the button and motion
2144 * events of the children.
2152 /* Scroll events are special cased here because it
2153 * feels wrong when scrolling a GtkViewport, say,
2154 * to have children of the viewport eat the scroll
2157 if (!GTK_WIDGET_IS_SENSITIVE (widget))
2158 handled_event = event->type != GDK_SCROLL;
2160 handled_event = gtk_widget_event (widget, event);
2162 tmp = widget->parent;
2163 g_object_unref (widget);
2167 if (!handled_event && widget)
2168 g_object_ref (widget);
2174 g_object_unref (widget);
2179 gtk_error (gchar *str)
2185 gtk_warning (gchar *str)
2191 gtk_message (gchar *str)
2197 gtk_print (gchar *str)
2199 static GtkWidget *window = NULL;
2200 static GtkWidget *text;
2201 static int level = 0;
2205 GtkWidget *hscrollbar;
2206 GtkWidget *vscrollbar;
2207 GtkWidget *separator;
2212 fputs (str, stdout);
2219 window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
2221 gtk_signal_connect (GTK_OBJECT (window), "destroy",
2222 (GtkSignalFunc) gtk_widget_destroyed,
2225 gtk_window_set_title (GTK_WINDOW (window), "Messages");
2227 box1 = gtk_vbox_new (FALSE, 0);
2228 gtk_container_add (GTK_CONTAINER (window), box1);
2229 gtk_widget_show (box1);
2232 box2 = gtk_vbox_new (FALSE, 10);
2233 gtk_container_set_border_width (GTK_CONTAINER (box2), 10);
2234 gtk_box_pack_start (GTK_BOX (box1), box2, TRUE, TRUE, 0);
2235 gtk_widget_show (box2);
2238 table = gtk_table_new (2, 2, FALSE);
2239 gtk_table_set_row_spacing (GTK_TABLE (table), 0, 2);
2240 gtk_table_set_col_spacing (GTK_TABLE (table), 0, 2);
2241 gtk_box_pack_start (GTK_BOX (box2), table, TRUE, TRUE, 0);
2242 gtk_widget_show (table);
2244 text = gtk_text_new (NULL, NULL);
2245 gtk_text_set_editable (GTK_TEXT (text), FALSE);
2246 gtk_table_attach_defaults (GTK_TABLE (table), text, 0, 1, 0, 1);
2247 gtk_widget_show (text);
2248 gtk_widget_realize (text);
2250 hscrollbar = gtk_hscrollbar_new (GTK_TEXT (text)->hadj);
2251 gtk_table_attach (GTK_TABLE (table), hscrollbar, 0, 1, 1, 2,
2252 GTK_EXPAND | GTK_FILL, GTK_FILL, 0, 0);
2253 gtk_widget_show (hscrollbar);
2255 vscrollbar = gtk_vscrollbar_new (GTK_TEXT (text)->vadj);
2256 gtk_table_attach (GTK_TABLE (table), vscrollbar, 1, 2, 0, 1,
2257 GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
2258 gtk_widget_show (vscrollbar);
2260 separator = gtk_hseparator_new ();
2261 gtk_box_pack_start (GTK_BOX (box1), separator, FALSE, TRUE, 0);
2262 gtk_widget_show (separator);
2265 box2 = gtk_vbox_new (FALSE, 10);
2266 gtk_container_set_border_width (GTK_CONTAINER (box2), 10);
2267 gtk_box_pack_start (GTK_BOX (box1), box2, FALSE, TRUE, 0);
2268 gtk_widget_show (box2);
2271 button = gtk_button_new_with_label ("close");
2272 gtk_signal_connect_object (GTK_OBJECT (button), "clicked",
2273 (GtkSignalFunc) gtk_widget_hide,
2274 GTK_OBJECT (window));
2275 gtk_box_pack_start (GTK_BOX (box2), button, TRUE, TRUE, 0);
2276 GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);
2277 gtk_widget_grab_default (button);
2278 gtk_widget_show (button);
2282 gtk_text_insert (GTK_TEXT (text), NULL, NULL, NULL, str, -1);
2285 if (!GTK_WIDGET_VISIBLE (window))
2286 gtk_widget_show (window);
2291 _gtk_boolean_handled_accumulator (GSignalInvocationHint *ihint,
2292 GValue *return_accu,
2293 const GValue *handler_return,
2296 gboolean continue_emission;
2297 gboolean signal_handled;
2299 signal_handled = g_value_get_boolean (handler_return);
2300 g_value_set_boolean (return_accu, signal_handled);
2301 continue_emission = !signal_handled;
2303 return continue_emission;
2306 #define __GTK_MAIN_C__
2307 #include "gtkaliasdef.c"