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gtk2/gtk/gtkmain.c
Tor Lillqvist dd36afc207 Don't use the same name for a function that used to be a variable 
Rename the gtk_major_version() etc functions I introduced yesterday to
start with gtk_get. Avoids misleading results in client programs whose
developers that don't notice the change or the compiler warnings, and
when recompiling against gtk3 then use the function addresses as the
version numbers.
2010-09-09 11:06:26 +03:00

2562 lines
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/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include "config.h"
#include <glib.h>
#include "gdkconfig.h"
#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <sys/types.h> /* For uid_t, gid_t */
#ifdef G_OS_WIN32
#define STRICT
#include <windows.h>
#undef STRICT
#endif
#include "gtkintl.h"
#include "gtkaccelmap.h"
#include "gtkbox.h"
#include "gtkclipboard.h"
#include "gtkdnd.h"
#include "gtkversion.h"
#include "gtkmain.h"
#include "gtkmodules.h"
#include "gtkrc.h"
#include "gtkrecentmanager.h"
#include "gtkselection.h"
#include "gtksettings.h"
#include "gtkwidget.h"
#include "gtkwindow.h"
#include "gtktooltip.h"
#include "gtkdebug.h"
#include "gtkmenu.h"
#include "gdk/gdkkeysyms.h"
#include "gdk/gdkprivate.h" /* for GDK_WINDOW_DESTROYED */
#ifdef G_OS_WIN32
static HMODULE gtk_dll;
BOOL WINAPI
DllMain (HINSTANCE hinstDLL,
DWORD fdwReason,
LPVOID lpvReserved)
{
switch (fdwReason)
{
case DLL_PROCESS_ATTACH:
gtk_dll = (HMODULE) hinstDLL;
break;
}
return TRUE;
}
/* These here before inclusion of gtkprivate.h so that the original
* GTK_LIBDIR and GTK_LOCALEDIR definitions are seen. Yeah, this is a
* bit sucky.
*/
const gchar *
_gtk_get_libdir (void)
{
static char *gtk_libdir = NULL;
if (gtk_libdir == NULL)
{
gchar *root = g_win32_get_package_installation_directory_of_module (gtk_dll);
gchar *slash = strrchr (root, '\\');
if (g_ascii_strcasecmp (slash + 1, ".libs") == 0)
gtk_libdir = GTK_LIBDIR;
else
gtk_libdir = g_build_filename (root, "lib", NULL);
g_free (root);
}
return gtk_libdir;
}
const gchar *
_gtk_get_localedir (void)
{
static char *gtk_localedir = NULL;
if (gtk_localedir == NULL)
{
const gchar *p;
gchar *root, *temp;
/* GTK_LOCALEDIR ends in either /lib/locale or
* /share/locale. Scan for that slash.
*/
p = GTK_LOCALEDIR + strlen (GTK_LOCALEDIR);
while (*--p != '/')
;
while (*--p != '/')
;
root = g_win32_get_package_installation_directory_of_module (gtk_dll);
temp = g_build_filename (root, p, NULL);
g_free (root);
/* gtk_localedir is passed to bindtextdomain() which isn't
* UTF-8-aware.
*/
gtk_localedir = g_win32_locale_filename_from_utf8 (temp);
g_free (temp);
}
return gtk_localedir;
}
#endif
#include "gtkprivate.h"
/* Private type definitions
*/
typedef struct _GtkInitFunction GtkInitFunction;
typedef struct _GtkQuitFunction GtkQuitFunction;
typedef struct _GtkKeySnooperData GtkKeySnooperData;
struct _GtkInitFunction
{
GtkFunction function;
gpointer data;
};
struct _GtkQuitFunction
{
guint id;
guint main_level;
GtkCallbackMarshal marshal;
GtkFunction function;
gpointer data;
GDestroyNotify destroy;
};
struct _GtkKeySnooperData
{
GtkKeySnoopFunc func;
gpointer func_data;
guint id;
};
static gint gtk_quit_invoke_function (GtkQuitFunction *quitf);
static void gtk_quit_destroy (GtkQuitFunction *quitf);
static gint gtk_invoke_key_snoopers (GtkWidget *grab_widget,
GdkEvent *event);
static GtkWindowGroup *gtk_main_get_window_group (GtkWidget *widget);
static guint gtk_main_loop_level = 0;
static gint pre_initialized = FALSE;
static gint gtk_initialized = FALSE;
static GList *current_events = NULL;
static GSList *main_loops = NULL; /* stack of currently executing main loops */
static GList *init_functions = NULL; /* A list of init functions.
*/
static GList *quit_functions = NULL; /* A list of quit functions.
*/
static GSList *key_snoopers = NULL;
static guint debug_flags = 0; /* Global GTK debug flag */
#ifdef G_ENABLE_DEBUG
static const GDebugKey gtk_debug_keys[] = {
{"misc", GTK_DEBUG_MISC},
{"plugsocket", GTK_DEBUG_PLUGSOCKET},
{"text", GTK_DEBUG_TEXT},
{"tree", GTK_DEBUG_TREE},
{"updates", GTK_DEBUG_UPDATES},
{"keybindings", GTK_DEBUG_KEYBINDINGS},
{"multihead", GTK_DEBUG_MULTIHEAD},
{"modules", GTK_DEBUG_MODULES},
{"geometry", GTK_DEBUG_GEOMETRY},
{"icontheme", GTK_DEBUG_ICONTHEME},
{"printing", GTK_DEBUG_PRINTING},
{"builder", GTK_DEBUG_BUILDER},
{"size-request", GTK_DEBUG_SIZE_REQUEST},
};
#endif /* G_ENABLE_DEBUG */
/**
* gtk_get_major_version:
*
* Returns the major version number of the GTK+ library. (e.g. in GTK+ version
* 3.1.5 this is 3.)
*
* This function is in the library, so it represents the GTK+ library
* your code is running against. Contrast with the #GTK_MAJOR_VERSION
* macro, which represents the major version of the GTK+ headers you
* have included when compiling your code.
*
* Returns: the major version number of the GTK+ library.
*
* Since: 3.0
*/
guint
gtk_get_major_version (void)
{
return GTK_MAJOR_VERSION;
}
/**
* gtk_get_minor_version:
*
* Returns the minor version number of the GTK+ library. (e.g. in GTK+ version
* 3.1.5 this is 1.)
*
* This function is in the library, so it represents the GTK+ library
* your code is are running against. Contrast with the
* #GTK_MINOR_VERSION macro, which represents the minor version of the
* GTK+ headers you have included when compiling your code.
*
* Returns: the minor version number of the GTK+ library.
*
* Since: 3.0
*/
guint
gtk_get_minor_version (void)
{
return GTK_MINOR_VERSION;
}
/**
* gtk_get_micro_version:
*
* Returns the micro version number of the GTK+ library. (e.g. in GTK+ version
* 3.1.5 this is 5.)
*
* This function is in the library, so it represents the GTK+ library
* your code is are running against. Contrast with the
* #GTK_MICRO_VERSION macro, which represents the micro version of the
* GTK+ headers you have included when compiling your code.
*
* Returns: the micro version number of the GTK+ library.
*
* Since: 3.0
*/
guint
gtk_get_micro_version (void)
{
return GTK_MICRO_VERSION;
}
/**
* gtk_get_binary_age:
*
* Returns the binary age as passed to
* <application>libtool</application> when building the GTK+ library
* the process is running against. If
* <application>libtool</application> means nothing to you, don't
* worry about it.
*
* Returns: the binary age of the GTK+ library.
*
* Since: 3.0
*/
guint
gtk_get_binary_age (void)
{
return GTK_BINARY_AGE;
}
/**
* gtk_get_interface_age:
*
* Returns the interface age as passed to
* <application>libtool</application> when building the GTK+ library
* the process is running against. If
* <application>libtool</application> means nothing to you, don't
* worry about it.
*
* Returns: the interface age of the GTK+ library.
*
* Since: 3.0
*/
guint
gtk_get_interface_age (void)
{
return GTK_INTERFACE_AGE;
}
/**
* gtk_check_version:
* @required_major: the required major version.
* @required_minor: the required minor version.
* @required_micro: the required micro version.
*
* Checks that the GTK+ library in use is compatible with the
* given version. Generally you would pass in the constants
* #GTK_MAJOR_VERSION, #GTK_MINOR_VERSION, #GTK_MICRO_VERSION
* as the three arguments to this function; that produces
* a check that the library in use is compatible with
* the version of GTK+ the application or module was compiled
* against.
*
* Compatibility is defined by two things: first the version
* of the running library is newer than the version
* @required_major.required_minor.@required_micro. Second
* the running library must be binary compatible with the
* version @required_major.required_minor.@required_micro
* (same major version.)
*
* This function is primarily for GTK+ modules; the module
* can call this function to check that it wasn't loaded
* into an incompatible version of GTK+. However, such a
* a check isn't completely reliable, since the module may be
* linked against an old version of GTK+ and calling the
* old version of gtk_check_version(), but still get loaded
* into an application using a newer version of GTK+.
*
* Return value: %NULL if the GTK+ library is compatible with the
* given version, or a string describing the version mismatch.
* The returned string is owned by GTK+ and should not be modified
* or freed.
**/
const gchar*
gtk_check_version (guint required_major,
guint required_minor,
guint required_micro)
{
gint gtk_effective_micro = 100 * GTK_MINOR_VERSION + GTK_MICRO_VERSION;
gint required_effective_micro = 100 * required_minor + required_micro;
if (required_major > GTK_MAJOR_VERSION)
return "Gtk+ version too old (major mismatch)";
if (required_major < GTK_MAJOR_VERSION)
return "Gtk+ version too new (major mismatch)";
if (required_effective_micro < gtk_effective_micro - GTK_BINARY_AGE)
return "Gtk+ version too new (micro mismatch)";
if (required_effective_micro > gtk_effective_micro)
return "Gtk+ version too old (micro mismatch)";
return NULL;
}
/* This checks to see if the process is running suid or sgid
* at the current time. If so, we don't allow GTK+ to be initialized.
* This is meant to be a mild check - we only error out if we
* can prove the programmer is doing something wrong, not if
* they could be doing something wrong. For this reason, we
* don't use issetugid() on BSD or prctl (PR_GET_DUMPABLE).
*/
static gboolean
check_setugid (void)
{
/* this isn't at all relevant on MS Windows and doesn't compile ... --hb */
#ifndef G_OS_WIN32
uid_t ruid, euid, suid; /* Real, effective and saved user ID's */
gid_t rgid, egid, sgid; /* Real, effective and saved group ID's */
#ifdef HAVE_GETRESUID
/* These aren't in the header files, so we prototype them here.
*/
int getresuid(uid_t *ruid, uid_t *euid, uid_t *suid);
int getresgid(gid_t *rgid, gid_t *egid, gid_t *sgid);
if (getresuid (&ruid, &euid, &suid) != 0 ||
getresgid (&rgid, &egid, &sgid) != 0)
#endif /* HAVE_GETRESUID */
{
suid = ruid = getuid ();
sgid = rgid = getgid ();
euid = geteuid ();
egid = getegid ();
}
if (ruid != euid || ruid != suid ||
rgid != egid || rgid != sgid)
{
g_warning ("This process is currently running setuid or setgid.\n"
"This is not a supported use of GTK+. You must create a helper\n"
"program instead. For further details, see:\n\n"
" http://www.gtk.org/setuid.html\n\n"
"Refusing to initialize GTK+.");
exit (1);
}
#endif
return TRUE;
}
#ifdef G_OS_WIN32
const gchar *
_gtk_get_datadir (void)
{
static char *gtk_datadir = NULL;
if (gtk_datadir == NULL)
{
gchar *root = g_win32_get_package_installation_directory_of_module (gtk_dll);
gtk_datadir = g_build_filename (root, "share", NULL);
g_free (root);
}
return gtk_datadir;
}
const gchar *
_gtk_get_sysconfdir (void)
{
static char *gtk_sysconfdir = NULL;
if (gtk_sysconfdir == NULL)
{
gchar *root = g_win32_get_package_installation_directory_of_module (gtk_dll);
gtk_sysconfdir = g_build_filename (root, "etc", NULL);
g_free (root);
}
return gtk_sysconfdir;
}
const gchar *
_gtk_get_data_prefix (void)
{
static char *gtk_data_prefix = NULL;
if (gtk_data_prefix == NULL)
gtk_data_prefix = g_win32_get_package_installation_directory_of_module (gtk_dll);
return gtk_data_prefix;
}
#endif /* G_OS_WIN32 */
static gboolean do_setlocale = TRUE;
/**
* gtk_disable_setlocale:
*
* Prevents gtk_init(), gtk_init_check(), gtk_init_with_args() and
* gtk_parse_args() from automatically
* calling <literal>setlocale (LC_ALL, "")</literal>. You would
* want to use this function if you wanted to set the locale for
* your program to something other than the user's locale, or if
* you wanted to set different values for different locale categories.
*
* Most programs should not need to call this function.
**/
void
gtk_disable_setlocale (void)
{
if (pre_initialized)
g_warning ("gtk_disable_setlocale() must be called before gtk_init()");
do_setlocale = FALSE;
}
#ifdef G_PLATFORM_WIN32
#undef gtk_init_check
#endif
static GString *gtk_modules_string = NULL;
static gboolean g_fatal_warnings = FALSE;
#ifdef G_ENABLE_DEBUG
static gboolean
gtk_arg_debug_cb (const char *key, const char *value, gpointer user_data)
{
debug_flags |= g_parse_debug_string (value,
gtk_debug_keys,
G_N_ELEMENTS (gtk_debug_keys));
return TRUE;
}
static gboolean
gtk_arg_no_debug_cb (const char *key, const char *value, gpointer user_data)
{
debug_flags &= ~g_parse_debug_string (value,
gtk_debug_keys,
G_N_ELEMENTS (gtk_debug_keys));
return TRUE;
}
#endif /* G_ENABLE_DEBUG */
static gboolean
gtk_arg_module_cb (const char *key, const char *value, gpointer user_data)
{
if (value && *value)
{
if (gtk_modules_string)
g_string_append_c (gtk_modules_string, G_SEARCHPATH_SEPARATOR);
else
gtk_modules_string = g_string_new (NULL);
g_string_append (gtk_modules_string, value);
}
return TRUE;
}
static const GOptionEntry gtk_args[] = {
{ "gtk-module", 0, 0, G_OPTION_ARG_CALLBACK, gtk_arg_module_cb,
/* Description of --gtk-module=MODULES in --help output */ N_("Load additional GTK+ modules"),
/* Placeholder in --gtk-module=MODULES in --help output */ N_("MODULES") },
{ "g-fatal-warnings", 0, 0, G_OPTION_ARG_NONE, &g_fatal_warnings,
/* Description of --g-fatal-warnings in --help output */ N_("Make all warnings fatal"), NULL },
#ifdef G_ENABLE_DEBUG
{ "gtk-debug", 0, 0, G_OPTION_ARG_CALLBACK, gtk_arg_debug_cb,
/* Description of --gtk-debug=FLAGS in --help output */ N_("GTK+ debugging flags to set"),
/* Placeholder in --gtk-debug=FLAGS in --help output */ N_("FLAGS") },
{ "gtk-no-debug", 0, 0, G_OPTION_ARG_CALLBACK, gtk_arg_no_debug_cb,
/* Description of --gtk-no-debug=FLAGS in --help output */ N_("GTK+ debugging flags to unset"),
/* Placeholder in --gtk-no-debug=FLAGS in --help output */ N_("FLAGS") },
#endif
{ NULL }
};
#ifdef G_OS_WIN32
static char *iso639_to_check = NULL;
static char *iso3166_to_check = NULL;
static char *script_to_check = NULL;
static gboolean setlocale_called = FALSE;
static BOOL CALLBACK
enum_locale_proc (LPTSTR locale)
{
LCID lcid;
char iso639[10];
char iso3166[10];
char *endptr;
lcid = strtoul (locale, &endptr, 16);
if (*endptr == '\0' &&
GetLocaleInfo (lcid, LOCALE_SISO639LANGNAME, iso639, sizeof (iso639)) &&
GetLocaleInfo (lcid, LOCALE_SISO3166CTRYNAME, iso3166, sizeof (iso3166)))
{
if (strcmp (iso639, iso639_to_check) == 0 &&
((iso3166_to_check != NULL &&
strcmp (iso3166, iso3166_to_check) == 0) ||
(iso3166_to_check == NULL &&
SUBLANGID (LANGIDFROMLCID (lcid)) == SUBLANG_DEFAULT)))
{
char language[100], country[100];
char locale[300];
if (script_to_check != NULL)
{
/* If lcid is the "other" script for this language,
* return TRUE, i.e. continue looking.
*/
if (strcmp (script_to_check, "Latn") == 0)
{
switch (LANGIDFROMLCID (lcid))
{
case MAKELANGID (LANG_AZERI, SUBLANG_AZERI_CYRILLIC):
return TRUE;
case MAKELANGID (LANG_UZBEK, SUBLANG_UZBEK_CYRILLIC):
return TRUE;
case MAKELANGID (LANG_SERBIAN, SUBLANG_SERBIAN_CYRILLIC):
return TRUE;
case MAKELANGID (LANG_SERBIAN, 0x07):
/* Serbian in Bosnia and Herzegovina, Cyrillic */
return TRUE;
}
}
else if (strcmp (script_to_check, "Cyrl") == 0)
{
switch (LANGIDFROMLCID (lcid))
{
case MAKELANGID (LANG_AZERI, SUBLANG_AZERI_LATIN):
return TRUE;
case MAKELANGID (LANG_UZBEK, SUBLANG_UZBEK_LATIN):
return TRUE;
case MAKELANGID (LANG_SERBIAN, SUBLANG_SERBIAN_LATIN):
return TRUE;
case MAKELANGID (LANG_SERBIAN, 0x06):
/* Serbian in Bosnia and Herzegovina, Latin */
return TRUE;
}
}
}
SetThreadLocale (lcid);
if (GetLocaleInfo (lcid, LOCALE_SENGLANGUAGE, language, sizeof (language)) &&
GetLocaleInfo (lcid, LOCALE_SENGCOUNTRY, country, sizeof (country)))
{
strcpy (locale, language);
strcat (locale, "_");
strcat (locale, country);
if (setlocale (LC_ALL, locale) != NULL)
setlocale_called = TRUE;
}
return FALSE;
}
}
return TRUE;
}
#endif
static void
setlocale_initialization (void)
{
static gboolean initialized = FALSE;
if (initialized)
return;
initialized = TRUE;
if (do_setlocale)
{
#ifdef G_OS_WIN32
/* If some of the POSIXish environment variables are set, set
* the Win32 thread locale correspondingly.
*/
char *p = getenv ("LC_ALL");
if (p == NULL)
p = getenv ("LANG");
if (p != NULL)
{
p = g_strdup (p);
if (strcmp (p, "C") == 0)
SetThreadLocale (LOCALE_SYSTEM_DEFAULT);
else
{
/* Check if one of the supported locales match the
* environment variable. If so, use that locale.
*/
iso639_to_check = p;
iso3166_to_check = strchr (iso639_to_check, '_');
if (iso3166_to_check != NULL)
{
*iso3166_to_check++ = '\0';
script_to_check = strchr (iso3166_to_check, '@');
if (script_to_check != NULL)
*script_to_check++ = '\0';
/* Handle special cases. */
/* The standard code for Serbia and Montenegro was
* "CS", but MSFT uses for some reason "SP". By now
* (October 2006), SP has split into two, "RS" and
* "ME", but don't bother trying to handle those
* yet. Do handle the even older "YU", though.
*/
if (strcmp (iso3166_to_check, "CS") == 0 ||
strcmp (iso3166_to_check, "YU") == 0)
iso3166_to_check = "SP";
}
else
{
script_to_check = strchr (iso639_to_check, '@');
if (script_to_check != NULL)
*script_to_check++ = '\0';
/* LANG_SERBIAN == LANG_CROATIAN, recognize just "sr" */
if (strcmp (iso639_to_check, "sr") == 0)
iso3166_to_check = "SP";
}
EnumSystemLocales (enum_locale_proc, LCID_SUPPORTED);
}
g_free (p);
}
if (!setlocale_called)
setlocale (LC_ALL, "");
#else
if (!setlocale (LC_ALL, ""))
g_warning ("Locale not supported by C library.\n\tUsing the fallback 'C' locale.");
#endif
}
}
static void
check_mixed_deps (void)
{
GModule *module;
gpointer func;
module = g_module_open (NULL, 0);
if (g_module_symbol (module, "gtk_progress_get_type", &func))
{
g_error ("GTK+ 2.x symbols detected. Using GTK+ 2.x and GTK+ 3 in the same process is not supported");
}
g_module_close (module);
}
static void
do_pre_parse_initialization (int *argc,
char ***argv)
{
const gchar *env_string;
if (pre_initialized)
return;
pre_initialized = TRUE;
check_mixed_deps ();
gdk_pre_parse_libgtk_only ();
gdk_event_handler_set ((GdkEventFunc)gtk_main_do_event, NULL, NULL);
#ifdef G_ENABLE_DEBUG
env_string = g_getenv ("GTK_DEBUG");
if (env_string != NULL)
{
debug_flags = g_parse_debug_string (env_string,
gtk_debug_keys,
G_N_ELEMENTS (gtk_debug_keys));
env_string = NULL;
}
#endif /* G_ENABLE_DEBUG */
env_string = g_getenv ("GTK_MODULES");
if (env_string)
gtk_modules_string = g_string_new (env_string);
}
static void
gettext_initialization (void)
{
setlocale_initialization ();
#ifdef ENABLE_NLS
bindtextdomain (GETTEXT_PACKAGE, GTK_LOCALEDIR);
bindtextdomain (GETTEXT_PACKAGE "-properties", GTK_LOCALEDIR);
# ifdef HAVE_BIND_TEXTDOMAIN_CODESET
bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
bind_textdomain_codeset (GETTEXT_PACKAGE "-properties", "UTF-8");
# endif
#endif
}
static void
do_post_parse_initialization (int *argc,
char ***argv)
{
if (gtk_initialized)
return;
gettext_initialization ();
#ifdef SIGPIPE
signal (SIGPIPE, SIG_IGN);
#endif
if (g_fatal_warnings)
{
GLogLevelFlags fatal_mask;
fatal_mask = g_log_set_always_fatal (G_LOG_FATAL_MASK);
fatal_mask |= G_LOG_LEVEL_WARNING | G_LOG_LEVEL_CRITICAL;
g_log_set_always_fatal (fatal_mask);
}
if (debug_flags & GTK_DEBUG_UPDATES)
gdk_window_set_debug_updates (TRUE);
{
/* Translate to default:RTL if you want your widgets
* to be RTL, otherwise translate to default:LTR.
* Do *not* translate it to "predefinito:LTR", if it
* it isn't default:LTR or default:RTL it will not work
*/
char *e = _("default:LTR");
if (strcmp (e, "default:RTL")==0)
gtk_widget_set_default_direction (GTK_TEXT_DIR_RTL);
else if (strcmp (e, "default:LTR"))
g_warning ("Whoever translated default:LTR did so wrongly.\n");
}
/* do what the call to gtk_type_init() used to do */
g_type_init ();
_gtk_accel_map_init ();
_gtk_rc_init ();
/* Set the 'initialized' flag.
*/
gtk_initialized = TRUE;
/* load gtk modules */
if (gtk_modules_string)
{
_gtk_modules_init (argc, argv, gtk_modules_string->str);
g_string_free (gtk_modules_string, TRUE);
}
else
{
_gtk_modules_init (argc, argv, NULL);
}
}
typedef struct
{
gboolean open_default_display;
} OptionGroupInfo;
static gboolean
pre_parse_hook (GOptionContext *context,
GOptionGroup *group,
gpointer data,
GError **error)
{
do_pre_parse_initialization (NULL, NULL);
return TRUE;
}
static gboolean
post_parse_hook (GOptionContext *context,
GOptionGroup *group,
gpointer data,
GError **error)
{
OptionGroupInfo *info = data;
do_post_parse_initialization (NULL, NULL);
if (info->open_default_display)
{
if (gdk_display_open_default_libgtk_only () == NULL)
{
const char *display_name = gdk_get_display_arg_name ();
g_set_error (error,
G_OPTION_ERROR,
G_OPTION_ERROR_FAILED,
_("Cannot open display: %s"),
display_name ? display_name : "" );
return FALSE;
}
}
return TRUE;
}
/**
* gtk_get_debug_flags:
*
* Returns the GTK+ debug flags setting.
*/
guint
gtk_get_debug_flags (void)
{
return debug_flags;
}
/**
* gtk_set_debug_flags:
*
* Sets the GTK+ debug flags.
*/
void
gtk_set_debug_flags (guint flags)
{
debug_flags = flags;
}
/**
* gtk_get_option_group:
* @open_default_display: whether to open the default display
* when parsing the commandline arguments
*
* Returns a #GOptionGroup for the commandline arguments recognized
* by GTK+ and GDK. You should add this group to your #GOptionContext
* with g_option_context_add_group(), if you are using
* g_option_context_parse() to parse your commandline arguments.
*
* Returns: a #GOptionGroup for the commandline arguments recognized
* by GTK+
*
* Since: 2.6
*/
GOptionGroup *
gtk_get_option_group (gboolean open_default_display)
{
GOptionGroup *group;
OptionGroupInfo *info;
gettext_initialization ();
info = g_new0 (OptionGroupInfo, 1);
info->open_default_display = open_default_display;
group = g_option_group_new ("gtk", _("GTK+ Options"), _("Show GTK+ Options"), info, g_free);
g_option_group_set_parse_hooks (group, pre_parse_hook, post_parse_hook);
gdk_add_option_entries_libgtk_only (group);
g_option_group_add_entries (group, gtk_args);
g_option_group_set_translation_domain (group, GETTEXT_PACKAGE);
return group;
}
/**
* gtk_init_with_args:
* @argc: a pointer to the number of command line arguments.
* @argv: a pointer to the array of command line arguments.
* @parameter_string: a string which is displayed in
* the first line of <option>--help</option> output, after
* <literal><replaceable>programname</replaceable> [OPTION...]</literal>
* @entries: a %NULL-terminated array of #GOptionEntry<!-- -->s
* describing the options of your program
* @translation_domain: a translation domain to use for translating
* the <option>--help</option> output for the options in @entries
* and the @parameter_string with gettext(), or %NULL
* @error: a return location for errors
*
* This function does the same work as gtk_init_check().
* Additionally, it allows you to add your own commandline options,
* and it automatically generates nicely formatted
* <option>--help</option> output. Note that your program will
* be terminated after writing out the help output.
*
* Returns: %TRUE if the GUI has been successfully initialized,
* %FALSE otherwise.
*
* Since: 2.6
*/
gboolean
gtk_init_with_args (gint *argc,
gchar ***argv,
const gchar *parameter_string,
const GOptionEntry *entries,
const gchar *translation_domain,
GError **error)
{
GOptionContext *context;
GOptionGroup *gtk_group;
gboolean retval;
if (gtk_initialized)
return gdk_display_open_default_libgtk_only () != NULL;
gettext_initialization ();
if (!check_setugid ())
return FALSE;
gtk_group = gtk_get_option_group (TRUE);
context = g_option_context_new (parameter_string);
g_option_context_add_group (context, gtk_group);
g_option_context_set_translation_domain (context, translation_domain);
if (entries)
g_option_context_add_main_entries (context, entries, translation_domain);
retval = g_option_context_parse (context, argc, argv, error);
g_option_context_free (context);
return retval;
}
/**
* gtk_parse_args:
* @argc: (inout): a pointer to the number of command line arguments.
* @argv: (array) (inout): a pointer to the array of command line arguments.
*
* Parses command line arguments, and initializes global
* attributes of GTK+, but does not actually open a connection
* to a display. (See gdk_display_open(), gdk_get_display_arg_name())
*
* Any arguments used by GTK+ or GDK are removed from the array and
* @argc and @argv are updated accordingly.
*
* You shouldn't call this function explicitely if you are using
* gtk_init(), or gtk_init_check().
*
* Return value: %TRUE if initialization succeeded, otherwise %FALSE.
**/
gboolean
gtk_parse_args (int *argc,
char ***argv)
{
GOptionContext *option_context;
GOptionGroup *gtk_group;
GError *error = NULL;
if (gtk_initialized)
return TRUE;
gettext_initialization ();
if (!check_setugid ())
return FALSE;
option_context = g_option_context_new (NULL);
g_option_context_set_ignore_unknown_options (option_context, TRUE);
g_option_context_set_help_enabled (option_context, FALSE);
gtk_group = gtk_get_option_group (FALSE);
g_option_context_set_main_group (option_context, gtk_group);
if (!g_option_context_parse (option_context, argc, argv, &error))
{
g_warning ("%s", error->message);
g_error_free (error);
}
g_option_context_free (option_context);
return TRUE;
}
#ifdef G_PLATFORM_WIN32
#undef gtk_init_check
#endif
/**
* gtk_init_check:
* @argc: (inout): Address of the <parameter>argc</parameter> parameter of your
* main() function. Changed if any arguments were handled.
* @argv: (array length=argc) (inout) (allow-none): Address of the <parameter>argv</parameter> parameter of main().
* Any parameters understood by gtk_init() are stripped before return.
*
* This function does the same work as gtk_init() with only
* a single change: It does not terminate the program if the GUI can't be
* initialized. Instead it returns %FALSE on failure.
*
* This way the application can fall back to some other means of communication
* with the user - for example a curses or command line interface.
*
* Return value: %TRUE if the GUI has been successfully initialized,
* %FALSE otherwise.
**/
gboolean
gtk_init_check (int *argc,
char ***argv)
{
if (!gtk_parse_args (argc, argv))
return FALSE;
return gdk_display_open_default_libgtk_only () != NULL;
}
#ifdef G_PLATFORM_WIN32
#undef gtk_init
#endif
/**
* gtk_init:
* @argc: (inout): Address of the <parameter>argc</parameter> parameter of your
* main() function. Changed if any arguments were handled.
* @argv: (array length=argc) (inout) (allow-none): Address of the <parameter>argv</parameter> parameter of main().
* Any parameters understood by gtk_init() are stripped before return.
*
* Call this function before using any other GTK+ functions in your GUI
* applications. It will initialize everything needed to operate the
* toolkit and parses some standard command line options. @argc and
* @argv are adjusted accordingly so your own code will
* never see those standard arguments.
*
* Note that there are some alternative ways to initialize GTK+:
* if you are calling gtk_parse_args(), gtk_init_check(),
* gtk_init_with_args() or g_option_context_parse() with
* the option group returned by gtk_get_option_group(), you
* <emphasis>don't</emphasis> have to call gtk_init().
*
* <note><para>
* This function will terminate your program if it was unable to initialize
* the GUI for some reason. If you want your program to fall back to a
* textual interface you want to call gtk_init_check() instead.
* </para></note>
*
* <note><para>
* Since 2.18, GTK+ calls <literal>signal (SIGPIPE, SIG_IGN)</literal>
* during initialization, to ignore SIGPIPE signals, since these are
* almost never wanted in graphical applications. If you do need to
* handle SIGPIPE for some reason, reset the handler after gtk_init(),
* but notice that other libraries (e.g. libdbus or gvfs) might do
* similar things.
* </para></note>
**/
void
gtk_init (int *argc, char ***argv)
{
if (!gtk_init_check (argc, argv))
{
const char *display_name_arg = gdk_get_display_arg_name ();
if (display_name_arg == NULL)
display_name_arg = getenv("DISPLAY");
g_warning ("cannot open display: %s", display_name_arg ? display_name_arg : "");
exit (1);
}
}
#ifdef G_PLATFORM_WIN32
static void
check_sizeof_GtkWindow (size_t sizeof_GtkWindow)
{
if (sizeof_GtkWindow != sizeof (GtkWindow))
g_error ("Incompatible build!\n"
"The code using GTK+ thinks GtkWindow is of different\n"
"size than it actually is in this build of GTK+.\n"
"On Windows, this probably means that you have compiled\n"
"your code with gcc without the -mms-bitfields switch,\n"
"or that you are using an unsupported compiler.");
}
/* In GTK+ 2.0 the GtkWindow struct actually is the same size in
* gcc-compiled code on Win32 whether compiled with -fnative-struct or
* not. Unfortunately this wan't noticed until after GTK+ 2.0.1. So,
* from GTK+ 2.0.2 on, check some other struct, too, where the use of
* -fnative-struct still matters. GtkBox is one such.
*/
static void
check_sizeof_GtkBox (size_t sizeof_GtkBox)
{
if (sizeof_GtkBox != sizeof (GtkBox))
g_error ("Incompatible build!\n"
"The code using GTK+ thinks GtkBox is of different\n"
"size than it actually is in this build of GTK+.\n"
"On Windows, this probably means that you have compiled\n"
"your code with gcc without the -mms-bitfields switch,\n"
"or that you are using an unsupported compiler.");
}
/* These two functions might get more checks added later, thus pass
* in the number of extra args.
*/
void
gtk_init_abi_check (int *argc, char ***argv, int num_checks, size_t sizeof_GtkWindow, size_t sizeof_GtkBox)
{
check_sizeof_GtkWindow (sizeof_GtkWindow);
if (num_checks >= 2)
check_sizeof_GtkBox (sizeof_GtkBox);
gtk_init (argc, argv);
}
gboolean
gtk_init_check_abi_check (int *argc, char ***argv, int num_checks, size_t sizeof_GtkWindow, size_t sizeof_GtkBox)
{
check_sizeof_GtkWindow (sizeof_GtkWindow);
if (num_checks >= 2)
check_sizeof_GtkBox (sizeof_GtkBox);
return gtk_init_check (argc, argv);
}
#endif
/**
* gtk_set_locale:
*
* Initializes internationalization support for GTK+. gtk_init()
* automatically does this, so there is typically no point
* in calling this function.
*
* If you are calling this function because you changed the locale
* after GTK+ is was initialized, then calling this function
* may help a bit. (Note, however, that changing the locale
* after GTK+ is initialized may produce inconsistent results and
* is not really supported.)
*
* In detail - sets the current locale according to the
* program environment. This is the same as calling the C library function
* <literal>setlocale (LC_ALL, "")</literal> but also takes care of the
* locale specific setup of the windowing system used by GDK.
*
* Returns: a string corresponding to the locale set, typically in the
* form lang_COUNTRY, where lang is an ISO-639 language code, and
* COUNTRY is an ISO-3166 country code. On Unix, this form matches the
* result of the setlocale(); it is also used on other machines, such as
* Windows, where the C library returns a different result. The string is
* owned by GTK+ and should not be modified or freed.
**/
gchar *
gtk_set_locale (void)
{
return gdk_set_locale ();
}
/**
* _gtk_get_lc_ctype:
*
* Return the Unix-style locale string for the language currently in
* effect. On Unix systems, this is the return value from
* <literal>setlocale(LC_CTYPE, NULL)</literal>, and the user can
* affect this through the environment variables LC_ALL, LC_CTYPE or
* LANG (checked in that order). The locale strings typically is in
* the form lang_COUNTRY, where lang is an ISO-639 language code, and
* COUNTRY is an ISO-3166 country code. For instance, sv_FI for
* Swedish as written in Finland or pt_BR for Portuguese as written in
* Brazil.
*
* On Windows, the C library doesn't use any such environment
* variables, and setting them won't affect the behaviour of functions
* like ctime(). The user sets the locale through the Regional Options
* in the Control Panel. The C library (in the setlocale() function)
* does not use country and language codes, but country and language
* names spelled out in English.
* However, this function does check the above environment
* variables, and does return a Unix-style locale string based on
* either said environment variables or the thread's current locale.
*
* Return value: a dynamically allocated string, free with g_free().
*/
gchar *
_gtk_get_lc_ctype (void)
{
#ifdef G_OS_WIN32
/* Somebody might try to set the locale for this process using the
* LANG or LC_ environment variables. The Microsoft C library
* doesn't know anything about them. You set the locale in the
* Control Panel. Setting these env vars won't have any affect on
* locale-dependent C library functions like ctime(). But just for
* kicks, do obey LC_ALL, LC_CTYPE and LANG in GTK. (This also makes
* it easier to test GTK and Pango in various default languages, you
* don't have to clickety-click in the Control Panel, you can simply
* start the program with LC_ALL=something on the command line.)
*/
gchar *p;
p = getenv ("LC_ALL");
if (p != NULL)
return g_strdup (p);
p = getenv ("LC_CTYPE");
if (p != NULL)
return g_strdup (p);
p = getenv ("LANG");
if (p != NULL)
return g_strdup (p);
return g_win32_getlocale ();
#else
return g_strdup (setlocale (LC_CTYPE, NULL));
#endif
}
/**
* gtk_get_default_language:
*
* Returns the #PangoLanguage for the default language currently in
* effect. (Note that this can change over the life of an
* application.) The default language is derived from the current
* locale. It determines, for example, whether GTK+ uses the
* right-to-left or left-to-right text direction.
*
* This function is equivalent to pango_language_get_default(). See
* that function for details.
*
* Return value: the default language as a #PangoLanguage, must not be
* freed
**/
PangoLanguage *
gtk_get_default_language (void)
{
return pango_language_get_default ();
}
void
gtk_main (void)
{
GList *tmp_list;
GList *functions;
GtkInitFunction *init;
GMainLoop *loop;
gtk_main_loop_level++;
loop = g_main_loop_new (NULL, TRUE);
main_loops = g_slist_prepend (main_loops, loop);
tmp_list = functions = init_functions;
init_functions = NULL;
while (tmp_list)
{
init = tmp_list->data;
tmp_list = tmp_list->next;
(* init->function) (init->data);
g_free (init);
}
g_list_free (functions);
if (g_main_loop_is_running (main_loops->data))
{
GDK_THREADS_LEAVE ();
g_main_loop_run (loop);
GDK_THREADS_ENTER ();
gdk_flush ();
}
if (quit_functions)
{
GList *reinvoke_list = NULL;
GtkQuitFunction *quitf;
while (quit_functions)
{
quitf = quit_functions->data;
tmp_list = quit_functions;
quit_functions = g_list_remove_link (quit_functions, quit_functions);
g_list_free_1 (tmp_list);
if ((quitf->main_level && quitf->main_level != gtk_main_loop_level) ||
gtk_quit_invoke_function (quitf))
{
reinvoke_list = g_list_prepend (reinvoke_list, quitf);
}
else
{
gtk_quit_destroy (quitf);
}
}
if (reinvoke_list)
{
GList *work;
work = g_list_last (reinvoke_list);
if (quit_functions)
quit_functions->prev = work;
work->next = quit_functions;
quit_functions = work;
}
gdk_flush ();
}
main_loops = g_slist_remove (main_loops, loop);
g_main_loop_unref (loop);
gtk_main_loop_level--;
if (gtk_main_loop_level == 0)
{
/* Try storing all clipboard data we have */
_gtk_clipboard_store_all ();
/* Synchronize the recent manager singleton */
_gtk_recent_manager_sync ();
}
}
guint
gtk_main_level (void)
{
return gtk_main_loop_level;
}
void
gtk_main_quit (void)
{
g_return_if_fail (main_loops != NULL);
g_main_loop_quit (main_loops->data);
}
gboolean
gtk_events_pending (void)
{
gboolean result;
GDK_THREADS_LEAVE ();
result = g_main_context_pending (NULL);
GDK_THREADS_ENTER ();
return result;
}
gboolean
gtk_main_iteration (void)
{
GDK_THREADS_LEAVE ();
g_main_context_iteration (NULL, TRUE);
GDK_THREADS_ENTER ();
if (main_loops)
return !g_main_loop_is_running (main_loops->data);
else
return TRUE;
}
gboolean
gtk_main_iteration_do (gboolean blocking)
{
GDK_THREADS_LEAVE ();
g_main_context_iteration (NULL, blocking);
GDK_THREADS_ENTER ();
if (main_loops)
return !g_main_loop_is_running (main_loops->data);
else
return TRUE;
}
/* private libgtk to libgdk interfaces
*/
gboolean gdk_device_grab_info_libgtk_only (GdkDisplay *display,
GdkDevice *device,
GdkWindow **grab_window,
gboolean *owner_events);
static void
rewrite_events_translate (GdkWindow *old_window,
GdkWindow *new_window,
gdouble *x,
gdouble *y)
{
gint old_origin_x, old_origin_y;
gint new_origin_x, new_origin_y;
gdk_window_get_origin (old_window, &old_origin_x, &old_origin_y);
gdk_window_get_origin (new_window, &new_origin_x, &new_origin_y);
*x += old_origin_x - new_origin_x;
*y += old_origin_y - new_origin_y;
}
static GdkEvent *
rewrite_event_for_window (GdkEvent *event,
GdkWindow *new_window)
{
event = gdk_event_copy (event);
switch (event->type)
{
case GDK_SCROLL:
rewrite_events_translate (event->any.window,
new_window,
&event->scroll.x, &event->scroll.y);
break;
case GDK_BUTTON_PRESS:
case GDK_2BUTTON_PRESS:
case GDK_3BUTTON_PRESS:
case GDK_BUTTON_RELEASE:
rewrite_events_translate (event->any.window,
new_window,
&event->button.x, &event->button.y);
break;
case GDK_MOTION_NOTIFY:
rewrite_events_translate (event->any.window,
new_window,
&event->motion.x, &event->motion.y);
break;
case GDK_KEY_PRESS:
case GDK_KEY_RELEASE:
case GDK_PROXIMITY_IN:
case GDK_PROXIMITY_OUT:
break;
default:
return event;
}
g_object_unref (event->any.window);
event->any.window = g_object_ref (new_window);
return event;
}
/* If there is a pointer or keyboard grab in effect with owner_events = TRUE,
* then what X11 does is deliver the event normally if it was going to this
* client, otherwise, delivers it in terms of the grab window. This function
* rewrites events to the effect that events going to the same window group
* are delivered normally, otherwise, the event is delivered in terms of the
* grab window.
*/
static GdkEvent *
rewrite_event_for_grabs (GdkEvent *event)
{
GdkWindow *grab_window;
GtkWidget *event_widget, *grab_widget;
gpointer grab_widget_ptr;
gboolean owner_events;
GdkDisplay *display;
GdkDevice *device;
switch (event->type)
{
case GDK_SCROLL:
case GDK_BUTTON_PRESS:
case GDK_2BUTTON_PRESS:
case GDK_3BUTTON_PRESS:
case GDK_BUTTON_RELEASE:
case GDK_MOTION_NOTIFY:
case GDK_PROXIMITY_IN:
case GDK_PROXIMITY_OUT:
case GDK_KEY_PRESS:
case GDK_KEY_RELEASE:
display = gdk_drawable_get_display (event->any.window);
device = gdk_event_get_device (event);
if (!gdk_device_grab_info_libgtk_only (display, device, &grab_window, &owner_events) ||
!owner_events)
return NULL;
break;
default:
return NULL;
}
event_widget = gtk_get_event_widget (event);
gdk_window_get_user_data (grab_window, &grab_widget_ptr);
grab_widget = grab_widget_ptr;
if (grab_widget &&
gtk_main_get_window_group (grab_widget) != gtk_main_get_window_group (event_widget))
return rewrite_event_for_window (event, grab_window);
else
return NULL;
}
void
gtk_main_do_event (GdkEvent *event)
{
GtkWidget *event_widget;
GtkWidget *grab_widget = NULL;
GtkWindowGroup *window_group;
GdkEvent *rewritten_event = NULL;
GdkDevice *device;
GList *tmp_list;
if (event->type == GDK_SETTING)
{
_gtk_settings_handle_event (&event->setting);
return;
}
if (event->type == GDK_OWNER_CHANGE)
{
_gtk_clipboard_handle_event (&event->owner_change);
return;
}
/* Find the widget which got the event. We store the widget
* in the user_data field of GdkWindow's.
* Ignore the event if we don't have a widget for it, except
* for GDK_PROPERTY_NOTIFY events which are handled specialy.
* Though this happens rarely, bogus events can occour
* for e.g. destroyed GdkWindows.
*/
event_widget = gtk_get_event_widget (event);
if (!event_widget)
{
/* To handle selection INCR transactions, we select
* PropertyNotify events on the requestor window and create
* a corresponding (fake) GdkWindow so that events get
* here. There won't be a widget though, so we have to handle
* them specially
*/
if (event->type == GDK_PROPERTY_NOTIFY)
_gtk_selection_incr_event (event->any.window,
&event->property);
return;
}
/* If pointer or keyboard grabs are in effect, munge the events
* so that each window group looks like a separate app.
*/
rewritten_event = rewrite_event_for_grabs (event);
if (rewritten_event)
{
event = rewritten_event;
event_widget = gtk_get_event_widget (event);
}
window_group = gtk_main_get_window_group (event_widget);
device = gdk_event_get_device (event);
/* check whether there is a (device) grab in effect...
*/
if (device)
grab_widget = gtk_window_group_get_current_device_grab (window_group, device);
if (!grab_widget && window_group->grabs)
grab_widget = window_group->grabs->data;
/* If the grab widget is an ancestor of the event widget
* then we send the event to the original event widget.
* This is the key to implementing modality.
*/
if (!grab_widget ||
(gtk_widget_is_sensitive (event_widget) &&
gtk_widget_is_ancestor (event_widget, grab_widget)))
grab_widget = event_widget;
/* If the widget receiving events is actually blocked by another device GTK+ grab */
if (device &&
_gtk_window_group_widget_is_blocked_for_device (window_group, grab_widget, device))
{
if (rewritten_event)
gdk_event_free (rewritten_event);
return;
}
/* Push the event onto a stack of current events for
* gtk_current_event_get().
*/
current_events = g_list_prepend (current_events, event);
/* Not all events get sent to the grabbing widget.
* The delete, destroy, expose, focus change and resize
* events still get sent to the event widget because
* 1) these events have no meaning for the grabbing widget
* and 2) redirecting these events to the grabbing widget
* could cause the display to be messed up.
*
* Drag events are also not redirected, since it isn't
* clear what the semantics of that would be.
*/
switch (event->type)
{
case GDK_NOTHING:
break;
case GDK_DELETE:
g_object_ref (event_widget);
if ((!window_group->grabs || gtk_widget_get_toplevel (window_group->grabs->data) == event_widget) &&
!gtk_widget_event (event_widget, event))
gtk_widget_destroy (event_widget);
g_object_unref (event_widget);
break;
case GDK_DESTROY:
/* Unexpected GDK_DESTROY from the outside, ignore for
* child windows, handle like a GDK_DELETE for toplevels
*/
if (!gtk_widget_get_parent (event_widget))
{
g_object_ref (event_widget);
if (!gtk_widget_event (event_widget, event) &&
gtk_widget_get_realized (event_widget))
gtk_widget_destroy (event_widget);
g_object_unref (event_widget);
}
break;
case GDK_EXPOSE:
if (event->any.window && gtk_widget_get_double_buffered (event_widget))
{
gdk_window_begin_paint_region (event->any.window, event->expose.region);
gtk_widget_send_expose (event_widget, event);
gdk_window_end_paint (event->any.window);
}
else
{
/* The app may paint with a previously allocated cairo_t,
which will draw directly to the window. We can't catch cairo
drap operatoins to automatically flush the window, thus we
need to explicitly flush any outstanding moves or double
buffering */
gdk_window_flush (event->any.window);
gtk_widget_send_expose (event_widget, event);
}
break;
case GDK_PROPERTY_NOTIFY:
case GDK_NO_EXPOSE:
case GDK_FOCUS_CHANGE:
case GDK_CONFIGURE:
case GDK_MAP:
case GDK_UNMAP:
case GDK_SELECTION_CLEAR:
case GDK_SELECTION_REQUEST:
case GDK_SELECTION_NOTIFY:
case GDK_CLIENT_EVENT:
case GDK_VISIBILITY_NOTIFY:
case GDK_WINDOW_STATE:
case GDK_GRAB_BROKEN:
case GDK_DAMAGE:
gtk_widget_event (event_widget, event);
break;
case GDK_SCROLL:
case GDK_BUTTON_PRESS:
case GDK_2BUTTON_PRESS:
case GDK_3BUTTON_PRESS:
gtk_propagate_event (grab_widget, event);
break;
case GDK_KEY_PRESS:
case GDK_KEY_RELEASE:
if (key_snoopers)
{
if (gtk_invoke_key_snoopers (grab_widget, event))
break;
}
/* Catch alt press to enable auto-mnemonics;
* menus are handled elsewhere
*/
if ((event->key.keyval == GDK_KEY_Alt_L || event->key.keyval == GDK_KEY_Alt_R) &&
!GTK_IS_MENU_SHELL (grab_widget))
{
gboolean auto_mnemonics;
g_object_get (gtk_widget_get_settings (grab_widget),
"gtk-auto-mnemonics", &auto_mnemonics, NULL);
if (auto_mnemonics)
{
gboolean mnemonics_visible;
GtkWidget *window;
mnemonics_visible = (event->type == GDK_KEY_PRESS);
window = gtk_widget_get_toplevel (grab_widget);
if (GTK_IS_WINDOW (window))
gtk_window_set_mnemonics_visible (GTK_WINDOW (window), mnemonics_visible);
}
}
/* else fall through */
case GDK_MOTION_NOTIFY:
case GDK_BUTTON_RELEASE:
case GDK_PROXIMITY_IN:
case GDK_PROXIMITY_OUT:
gtk_propagate_event (grab_widget, event);
break;
case GDK_ENTER_NOTIFY:
_gtk_widget_set_device_window (event_widget,
gdk_event_get_device (event),
event->any.window);
if (gtk_widget_is_sensitive (grab_widget))
gtk_widget_event (grab_widget, event);
break;
case GDK_LEAVE_NOTIFY:
_gtk_widget_set_device_window (event_widget,
gdk_event_get_device (event),
NULL);
if (gtk_widget_is_sensitive (grab_widget))
gtk_widget_event (grab_widget, event);
break;
case GDK_DRAG_STATUS:
case GDK_DROP_FINISHED:
_gtk_drag_source_handle_event (event_widget, event);
break;
case GDK_DRAG_ENTER:
case GDK_DRAG_LEAVE:
case GDK_DRAG_MOTION:
case GDK_DROP_START:
_gtk_drag_dest_handle_event (event_widget, event);
break;
default:
g_assert_not_reached ();
break;
}
if (event->type == GDK_ENTER_NOTIFY
|| event->type == GDK_LEAVE_NOTIFY
|| event->type == GDK_BUTTON_PRESS
|| event->type == GDK_2BUTTON_PRESS
|| event->type == GDK_3BUTTON_PRESS
|| event->type == GDK_KEY_PRESS
|| event->type == GDK_DRAG_ENTER
|| event->type == GDK_GRAB_BROKEN
|| event->type == GDK_MOTION_NOTIFY
|| event->type == GDK_SCROLL)
{
_gtk_tooltip_handle_event (event);
}
tmp_list = current_events;
current_events = g_list_remove_link (current_events, tmp_list);
g_list_free_1 (tmp_list);
if (rewritten_event)
gdk_event_free (rewritten_event);
}
gboolean
gtk_true (void)
{
return TRUE;
}
gboolean
gtk_false (void)
{
return FALSE;
}
static GtkWindowGroup *
gtk_main_get_window_group (GtkWidget *widget)
{
GtkWidget *toplevel = NULL;
if (widget)
toplevel = gtk_widget_get_toplevel (widget);
if (GTK_IS_WINDOW (toplevel))
return gtk_window_get_group (GTK_WINDOW (toplevel));
else
return gtk_window_get_group (NULL);
}
typedef struct
{
GtkWidget *old_grab_widget;
GtkWidget *new_grab_widget;
gboolean was_grabbed;
gboolean is_grabbed;
gboolean from_grab;
GList *notified_windows;
GdkDevice *device;
} GrabNotifyInfo;
static void
synth_crossing_for_grab_notify (GtkWidget *from,
GtkWidget *to,
GrabNotifyInfo *info,
GList *devices,
GdkCrossingMode mode)
{
while (devices)
{
GdkDevice *device = devices->data;
GdkWindow *from_window, *to_window;
/* Do not propagate events more than once to
* the same windows if non-multidevice aware.
*/
if (!from)
from_window = NULL;
else
{
from_window = _gtk_widget_get_device_window (from, device);
if (from_window &&
!gdk_window_get_support_multidevice (from_window) &&
g_list_find (info->notified_windows, from_window))
from_window = NULL;
}
if (!to)
to_window = NULL;
else
{
to_window = _gtk_widget_get_device_window (to, device);
if (to_window &&
!gdk_window_get_support_multidevice (to_window) &&
g_list_find (info->notified_windows, to_window))
to_window = NULL;
}
if (from_window || to_window)
{
_gtk_widget_synthesize_crossing ((from_window) ? from : NULL,
(to_window) ? to : NULL,
device, mode);
if (from_window)
info->notified_windows = g_list_prepend (info->notified_windows, from_window);
if (to_window)
info->notified_windows = g_list_prepend (info->notified_windows, to_window);
}
devices = devices->next;
}
}
static void
gtk_grab_notify_foreach (GtkWidget *child,
gpointer data)
{
GrabNotifyInfo *info = data;
gboolean was_grabbed, is_grabbed, was_shadowed, is_shadowed;
GList *devices;
was_grabbed = info->was_grabbed;
is_grabbed = info->is_grabbed;
info->was_grabbed = info->was_grabbed || (child == info->old_grab_widget);
info->is_grabbed = info->is_grabbed || (child == info->new_grab_widget);
was_shadowed = info->old_grab_widget && !info->was_grabbed;
is_shadowed = info->new_grab_widget && !info->is_grabbed;
g_object_ref (child);
if ((was_shadowed || is_shadowed) && GTK_IS_CONTAINER (child))
gtk_container_forall (GTK_CONTAINER (child), gtk_grab_notify_foreach, info);
if (info->device &&
_gtk_widget_get_device_window (child, info->device))
{
/* Device specified and is on widget */
devices = g_list_prepend (NULL, info->device);
}
else
devices = _gtk_widget_list_devices (child);
if (is_shadowed)
{
GTK_PRIVATE_SET_FLAG (child, GTK_SHADOWED);
if (!was_shadowed && devices &&
gtk_widget_is_sensitive (child))
synth_crossing_for_grab_notify (child, info->new_grab_widget,
info, devices,
GDK_CROSSING_GTK_GRAB);
}
else
{
GTK_PRIVATE_UNSET_FLAG (child, GTK_SHADOWED);
if (was_shadowed && devices &&
gtk_widget_is_sensitive (child))
synth_crossing_for_grab_notify (info->old_grab_widget, child,
info, devices,
info->from_grab ? GDK_CROSSING_GTK_GRAB :
GDK_CROSSING_GTK_UNGRAB);
}
if (was_shadowed != is_shadowed)
_gtk_widget_grab_notify (child, was_shadowed);
g_object_unref (child);
g_list_free (devices);
info->was_grabbed = was_grabbed;
info->is_grabbed = is_grabbed;
}
static void
gtk_grab_notify (GtkWindowGroup *group,
GdkDevice *device,
GtkWidget *old_grab_widget,
GtkWidget *new_grab_widget,
gboolean from_grab)
{
GList *toplevels;
GrabNotifyInfo info = { 0 };
if (old_grab_widget == new_grab_widget)
return;
info.old_grab_widget = old_grab_widget;
info.new_grab_widget = new_grab_widget;
info.from_grab = from_grab;
info.device = device;
g_object_ref (group);
toplevels = gtk_window_list_toplevels ();
g_list_foreach (toplevels, (GFunc)g_object_ref, NULL);
while (toplevels)
{
GtkWindow *toplevel = toplevels->data;
toplevels = g_list_delete_link (toplevels, toplevels);
info.was_grabbed = FALSE;
info.is_grabbed = FALSE;
if (group == gtk_window_get_group (toplevel))
gtk_grab_notify_foreach (GTK_WIDGET (toplevel), &info);
g_object_unref (toplevel);
}
g_list_free (info.notified_windows);
g_object_unref (group);
}
void
gtk_grab_add (GtkWidget *widget)
{
GtkWindowGroup *group;
GtkWidget *old_grab_widget;
g_return_if_fail (widget != NULL);
if (!gtk_widget_has_grab (widget) && gtk_widget_is_sensitive (widget))
{
_gtk_widget_set_has_grab (widget, TRUE);
group = gtk_main_get_window_group (widget);
if (group->grabs)
old_grab_widget = (GtkWidget *)group->grabs->data;
else
old_grab_widget = NULL;
g_object_ref (widget);
group->grabs = g_slist_prepend (group->grabs, widget);
gtk_grab_notify (group, NULL, old_grab_widget, widget, TRUE);
}
}
GtkWidget*
gtk_grab_get_current (void)
{
GtkWindowGroup *group;
group = gtk_main_get_window_group (NULL);
if (group->grabs)
return GTK_WIDGET (group->grabs->data);
return NULL;
}
void
gtk_grab_remove (GtkWidget *widget)
{
GtkWindowGroup *group;
GtkWidget *new_grab_widget;
g_return_if_fail (widget != NULL);
if (gtk_widget_has_grab (widget))
{
_gtk_widget_set_has_grab (widget, FALSE);
group = gtk_main_get_window_group (widget);
group->grabs = g_slist_remove (group->grabs, widget);
if (group->grabs)
new_grab_widget = (GtkWidget *)group->grabs->data;
else
new_grab_widget = NULL;
gtk_grab_notify (group, NULL, widget, new_grab_widget, FALSE);
g_object_unref (widget);
}
}
/**
* gtk_device_grab_add:
* @widget: a #GtkWidget
* @device: a #GtkDevice to grab on.
* @block_others: %TRUE to prevent other devices to interact with @widget.
*
* Adds a GTK+ grab on @device, so all the events on @device and its
* associated pointer or keyboard (if any) are delivered to @widget.
* If the @block_others parameter is %TRUE, any other devices will be
* unable to interact with @widget during the grab.
*
* Since: 3.0
**/
void
gtk_device_grab_add (GtkWidget *widget,
GdkDevice *device,
gboolean block_others)
{
GtkWindowGroup *group;
GtkWidget *old_grab_widget;
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (GDK_IS_DEVICE (device));
group = gtk_main_get_window_group (widget);
old_grab_widget = gtk_window_group_get_current_device_grab (group, device);
if (old_grab_widget != widget)
_gtk_window_group_add_device_grab (group, widget, device, block_others);
gtk_grab_notify (group, device, old_grab_widget, widget, TRUE);
}
/**
* gtk_device_grab_remove:
* @widget: a #GtkWidget
* @device: a #GdkDevice
*
* Removes a device grab from the given widget. You have to pair calls
* to gtk_device_grab_add() and gtk_device_grab_remove().
*
* Since: 3.0
**/
void
gtk_device_grab_remove (GtkWidget *widget,
GdkDevice *device)
{
GtkWindowGroup *group;
GtkWidget *new_grab_widget;
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (GDK_IS_DEVICE (device));
group = gtk_main_get_window_group (widget);
_gtk_window_group_remove_device_grab (group, widget, device);
new_grab_widget = gtk_window_group_get_current_device_grab (group, device);
gtk_grab_notify (group, device, widget, new_grab_widget, FALSE);
}
void
gtk_init_add (GtkFunction function,
gpointer data)
{
GtkInitFunction *init;
init = g_new (GtkInitFunction, 1);
init->function = function;
init->data = data;
init_functions = g_list_prepend (init_functions, init);
}
guint
gtk_key_snooper_install (GtkKeySnoopFunc snooper,
gpointer func_data)
{
GtkKeySnooperData *data;
static guint snooper_id = 1;
g_return_val_if_fail (snooper != NULL, 0);
data = g_new (GtkKeySnooperData, 1);
data->func = snooper;
data->func_data = func_data;
data->id = snooper_id++;
key_snoopers = g_slist_prepend (key_snoopers, data);
return data->id;
}
void
gtk_key_snooper_remove (guint snooper_id)
{
GtkKeySnooperData *data = NULL;
GSList *slist;
slist = key_snoopers;
while (slist)
{
data = slist->data;
if (data->id == snooper_id)
break;
slist = slist->next;
data = NULL;
}
if (data)
{
key_snoopers = g_slist_remove (key_snoopers, data);
g_free (data);
}
}
static gint
gtk_invoke_key_snoopers (GtkWidget *grab_widget,
GdkEvent *event)
{
GSList *slist;
gint return_val = FALSE;
slist = key_snoopers;
while (slist && !return_val)
{
GtkKeySnooperData *data;
data = slist->data;
slist = slist->next;
return_val = (*data->func) (grab_widget, (GdkEventKey*) event, data->func_data);
}
return return_val;
}
guint
gtk_quit_add_full (guint main_level,
GtkFunction function,
GtkCallbackMarshal marshal,
gpointer data,
GDestroyNotify destroy)
{
static guint quit_id = 1;
GtkQuitFunction *quitf;
g_return_val_if_fail ((function != NULL) || (marshal != NULL), 0);
quitf = g_slice_new (GtkQuitFunction);
quitf->id = quit_id++;
quitf->main_level = main_level;
quitf->function = function;
quitf->marshal = marshal;
quitf->data = data;
quitf->destroy = destroy;
quit_functions = g_list_prepend (quit_functions, quitf);
return quitf->id;
}
static void
gtk_quit_destroy (GtkQuitFunction *quitf)
{
if (quitf->destroy)
quitf->destroy (quitf->data);
g_slice_free (GtkQuitFunction, quitf);
}
static gint
gtk_quit_destructor (GtkObject **object_p)
{
if (*object_p)
gtk_object_destroy (*object_p);
g_free (object_p);
return FALSE;
}
void
gtk_quit_add_destroy (guint main_level,
GtkObject *object)
{
GtkObject **object_p;
g_return_if_fail (main_level > 0);
g_return_if_fail (GTK_IS_OBJECT (object));
object_p = g_new (GtkObject*, 1);
*object_p = object;
g_signal_connect (object,
"destroy",
G_CALLBACK (gtk_widget_destroyed),
object_p);
gtk_quit_add (main_level, (GtkFunction) gtk_quit_destructor, object_p);
}
guint
gtk_quit_add (guint main_level,
GtkFunction function,
gpointer data)
{
return gtk_quit_add_full (main_level, function, NULL, data, NULL);
}
void
gtk_quit_remove (guint id)
{
GtkQuitFunction *quitf;
GList *tmp_list;
tmp_list = quit_functions;
while (tmp_list)
{
quitf = tmp_list->data;
if (quitf->id == id)
{
quit_functions = g_list_remove_link (quit_functions, tmp_list);
g_list_free (tmp_list);
gtk_quit_destroy (quitf);
return;
}
tmp_list = tmp_list->next;
}
}
void
gtk_quit_remove_by_data (gpointer data)
{
GtkQuitFunction *quitf;
GList *tmp_list;
tmp_list = quit_functions;
while (tmp_list)
{
quitf = tmp_list->data;
if (quitf->data == data)
{
quit_functions = g_list_remove_link (quit_functions, tmp_list);
g_list_free (tmp_list);
gtk_quit_destroy (quitf);
return;
}
tmp_list = tmp_list->next;
}
}
/**
* gtk_get_current_event:
*
* Obtains a copy of the event currently being processed by GTK+. For
* example, if you get a "clicked" signal from #GtkButton, the current
* event will be the #GdkEventButton that triggered the "clicked"
* signal. The returned event must be freed with gdk_event_free().
* If there is no current event, the function returns %NULL.
*
* Return value: a copy of the current event, or %NULL if no current event.
**/
GdkEvent*
gtk_get_current_event (void)
{
if (current_events)
return gdk_event_copy (current_events->data);
else
return NULL;
}
/**
* gtk_get_current_event_time:
*
* If there is a current event and it has a timestamp, return that
* timestamp, otherwise return %GDK_CURRENT_TIME.
*
* Return value: the timestamp from the current event, or %GDK_CURRENT_TIME.
**/
guint32
gtk_get_current_event_time (void)
{
if (current_events)
return gdk_event_get_time (current_events->data);
else
return GDK_CURRENT_TIME;
}
/**
* gtk_get_current_event_state:
* @state: a location to store the state of the current event
*
* If there is a current event and it has a state field, place
* that state field in @state and return %TRUE, otherwise return
* %FALSE.
*
* Return value: %TRUE if there was a current event and it had a state field
**/
gboolean
gtk_get_current_event_state (GdkModifierType *state)
{
g_return_val_if_fail (state != NULL, FALSE);
if (current_events)
return gdk_event_get_state (current_events->data, state);
else
{
*state = 0;
return FALSE;
}
}
/**
* gtk_get_current_event_device:
*
* If there is a current event and it has a device, return that
* device, otherwise return %NULL.
*
* Returns: a #GdkDevice, or %NULL
**/
GdkDevice *
gtk_get_current_event_device (void)
{
if (current_events)
return gdk_event_get_device (current_events->data);
else
return NULL;
}
/**
* gtk_get_event_widget:
* @event: a #GdkEvent
*
* If @event is %NULL or the event was not associated with any widget,
* returns %NULL, otherwise returns the widget that received the event
* originally.
*
* Return value: the widget that originally received @event, or %NULL
**/
GtkWidget*
gtk_get_event_widget (GdkEvent *event)
{
GtkWidget *widget;
gpointer widget_ptr;
widget = NULL;
if (event && event->any.window &&
(event->type == GDK_DESTROY || !GDK_WINDOW_DESTROYED (event->any.window)))
{
gdk_window_get_user_data (event->any.window, &widget_ptr);
widget = widget_ptr;
}
return widget;
}
static gint
gtk_quit_invoke_function (GtkQuitFunction *quitf)
{
if (!quitf->marshal)
return quitf->function (quitf->data);
else
{
GtkArg args[1];
gint ret_val = FALSE;
args[0].name = NULL;
args[0].type = G_TYPE_BOOLEAN;
args[0].d.pointer_data = &ret_val;
((GtkCallbackMarshal) quitf->marshal) (NULL,
quitf->data,
0, args);
return ret_val;
}
}
/**
* gtk_propagate_event:
* @widget: a #GtkWidget
* @event: an event
*
* Sends an event to a widget, propagating the event to parent widgets
* if the event remains unhandled. Events received by GTK+ from GDK
* normally begin in gtk_main_do_event(). Depending on the type of
* event, existence of modal dialogs, grabs, etc., the event may be
* propagated; if so, this function is used. gtk_propagate_event()
* calls gtk_widget_event() on each widget it decides to send the
* event to. So gtk_widget_event() is the lowest-level function; it
* simply emits the "event" and possibly an event-specific signal on a
* widget. gtk_propagate_event() is a bit higher-level, and
* gtk_main_do_event() is the highest level.
*
* All that said, you most likely don't want to use any of these
* functions; synthesizing events is rarely needed. Consider asking on
* the mailing list for better ways to achieve your goals. For
* example, use gdk_window_invalidate_rect() or
* gtk_widget_queue_draw() instead of making up expose events.
*
**/
void
gtk_propagate_event (GtkWidget *widget,
GdkEvent *event)
{
gint handled_event;
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (event != NULL);
handled_event = FALSE;
g_object_ref (widget);
if ((event->type == GDK_KEY_PRESS) ||
(event->type == GDK_KEY_RELEASE))
{
/* Only send key events within Window widgets to the Window
* The Window widget will in turn pass the
* key event on to the currently focused widget
* for that window.
*/
GtkWidget *window;
window = gtk_widget_get_toplevel (widget);
if (GTK_IS_WINDOW (window))
{
/* If there is a grab within the window, give the grab widget
* a first crack at the key event
*/
if (widget != window && gtk_widget_has_grab (widget))
handled_event = gtk_widget_event (widget, event);
if (!handled_event)
{
window = gtk_widget_get_toplevel (widget);
if (GTK_IS_WINDOW (window))
{
if (gtk_widget_is_sensitive (window))
gtk_widget_event (window, event);
}
}
handled_event = TRUE; /* don't send to widget */
}
}
/* Other events get propagated up the widget tree
* so that parents can see the button and motion
* events of the children.
*/
if (!handled_event)
{
while (TRUE)
{
GtkWidget *tmp;
/* Scroll events are special cased here because it
* feels wrong when scrolling a GtkViewport, say,
* to have children of the viewport eat the scroll
* event
*/
if (!gtk_widget_is_sensitive (widget))
handled_event = event->type != GDK_SCROLL;
else
handled_event = gtk_widget_event (widget, event);
tmp = gtk_widget_get_parent (widget);
g_object_unref (widget);
widget = tmp;
if (!handled_event && widget)
g_object_ref (widget);
else
break;
}
}
else
g_object_unref (widget);
}
gboolean
_gtk_boolean_handled_accumulator (GSignalInvocationHint *ihint,
GValue *return_accu,
const GValue *handler_return,
gpointer dummy)
{
gboolean continue_emission;
gboolean signal_handled;
signal_handled = g_value_get_boolean (handler_return);
g_value_set_boolean (return_accu, signal_handled);
continue_emission = !signal_handled;
return continue_emission;
}
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