diff options
Diffstat (limited to 'src/core/main.c')
| -rw-r--r-- | src/core/main.c | 570 |
1 files changed, 0 insertions, 570 deletions
diff --git a/src/core/main.c b/src/core/main.c deleted file mode 100644 index 23ab8e56..00000000 --- a/src/core/main.c +++ /dev/null @@ -1,570 +0,0 @@ -/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */ - -/* Metacity main() */ - -/* - * Copyright (C) 2001 Havoc Pennington - * Copyright (C) 2006 Elijah Newren - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of the - * License, or (at your option) any later version. - * - * This program 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 - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA - * 02111-1307, USA. - */ - -/** - * \file core/main.c Program startup - * - * Functions which parse the command-line arguments, create the display, - * kick everything off and then close down Metacity when it's time to go. - */ - -/** - * \mainpage Metacity - a boring window manager for the adult in you - * - * Many window managers are like Marshmallow Froot Loops; Metacity - * is like Cheerios. - * - * The best way to get a handle on how the whole system fits together - * is discussed in doc/code-overview.txt; if you're looking for functions - * to investigate, read main(), meta_display_open(), and event_callback(). - */ - -#define _GNU_SOURCE -#define _SVID_SOURCE /* for putenv() and some signal-related functions */ - -#include <config.h> -#include "main.h" -#include "util.h" -#include "display-private.h" -#include "errors.h" -#include "ui.h" -#include "session.h" -#include "prefs.h" - -#include <glib-object.h> - -#include <stdlib.h> -#include <sys/types.h> -#include <stdio.h> -#include <string.h> -#include <signal.h> -#include <unistd.h> -#include <errno.h> -#include <fcntl.h> -#include <locale.h> -#include <time.h> - -/** - * The exit code we'll return to our parent process when we eventually die. - */ -static MetaExitCode meta_exit_code = META_EXIT_SUCCESS; - -/** - * Handle on the main loop, so that we have an easy way of shutting Metacity - * down. - */ -static GMainLoop *meta_main_loop = NULL; - -/** - * If set, Metacity will spawn an identical copy of itself immediately - * before quitting. - */ -static gboolean meta_restart_after_quit = FALSE; - -static void prefs_changed_callback (MetaPreference pref, - gpointer data); - -/** - * Prints log messages. If Metacity was compiled with backtrace support, - * also prints a backtrace (see meta_print_backtrace()). - * - * \param log_domain the domain the error occurred in (we ignore this) - * \param log_level the log level so that we can filter out less - * important messages - * \param message the message to log - * \param user_data arbitrary data (we ignore this) - */ -static void -log_handler (const gchar *log_domain, - GLogLevelFlags log_level, - const gchar *message, - gpointer user_data) -{ - meta_warning ("Log level %d: %s\n", log_level, message); - meta_print_backtrace (); -} - -/** - * Prints the version notice. This is shown when Metacity is called - * with the --version switch. - */ -static void -version (void) -{ - g_print (_("metacity %s\n" - "Copyright (C) 2001-2008 Havoc Pennington, Red Hat, Inc., and others\n" - "This is free software; see the source for copying conditions.\n" - "There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n"), - VERSION); - exit (0); -} - -/** - * Prints a list of which configure script options were used to - * build this copy of Metacity. This is actually always called - * on startup, but it's all no-op unless we're in verbose mode - * (see meta_set_verbose). - */ -static void -meta_print_compilation_info (void) -{ -#ifdef HAVE_SHAPE - meta_verbose ("Compiled with shape extension\n"); -#else - meta_verbose ("Compiled without shape extension\n"); -#endif -#ifdef HAVE_XINERAMA - meta_topic (META_DEBUG_XINERAMA, "Compiled with Xinerama extension\n"); -#else - meta_topic (META_DEBUG_XINERAMA, "Compiled without Xinerama extension\n"); -#endif -#ifdef HAVE_XFREE_XINERAMA - meta_topic (META_DEBUG_XINERAMA, " (using XFree86 Xinerama)\n"); -#else - meta_topic (META_DEBUG_XINERAMA, " (not using XFree86 Xinerama)\n"); -#endif -#ifdef HAVE_SOLARIS_XINERAMA - meta_topic (META_DEBUG_XINERAMA, " (using Solaris Xinerama)\n"); -#else - meta_topic (META_DEBUG_XINERAMA, " (not using Solaris Xinerama)\n"); -#endif -#ifdef HAVE_XSYNC - meta_verbose ("Compiled with sync extension\n"); -#else - meta_verbose ("Compiled without sync extension\n"); -#endif -#ifdef HAVE_RANDR - meta_verbose ("Compiled with randr extension\n"); -#else - meta_verbose ("Compiled without randr extension\n"); -#endif -#ifdef HAVE_STARTUP_NOTIFICATION - meta_verbose ("Compiled with startup notification\n"); -#else - meta_verbose ("Compiled without startup notification\n"); -#endif -#ifdef HAVE_COMPOSITE_EXTENSIONS - meta_verbose ("Compiled with composite extensions\n"); -#else - meta_verbose ("Compiled without composite extensions\n"); -#endif -} - -/** - * Prints the version number, the current timestamp (not the - * build date), the locale, the character encoding, and a list - * of configure script options that were used to build this - * copy of Metacity. This is actually always called - * on startup, but it's all no-op unless we're in verbose mode - * (see meta_set_verbose). - */ -static void -meta_print_self_identity (void) -{ - char buf[256]; - GDate d; - const char *charset; - - /* Version and current date. */ - g_date_clear (&d, 1); - g_date_set_time_t (&d, time (NULL)); - g_date_strftime (buf, sizeof (buf), "%x", &d); - meta_verbose ("Metacity version %s running on %s\n", - VERSION, buf); - - /* Locale and encoding. */ - g_get_charset (&charset); - meta_verbose ("Running in locale \"%s\" with encoding \"%s\"\n", - setlocale (LC_ALL, NULL), charset); - - /* Compilation settings. */ - meta_print_compilation_info (); -} - -/** - * The set of possible options that can be set on Metacity's - * command line. This type exists so that meta_parse_options() can - * write to an instance of it. - */ -typedef struct -{ - gchar *save_file; - gchar *display_name; - gchar *client_id; - gboolean replace_wm; - gboolean disable_sm; - gboolean print_version; - gboolean sync; -} MetaArguments; - -/** - * Parses argc and argv and returns the - * arguments that Metacity understands in meta_args. - * - * The strange call signature has to be written like it is so - * that g_option_context_parse() gets a chance to modify argc and - * argv. - * - * \param argc Pointer to the number of arguments Metacity was given - * \param argv Pointer to the array of arguments Metacity was given - * \param meta_args The result of parsing the arguments. - **/ -static void -meta_parse_options (int *argc, char ***argv, - MetaArguments *meta_args) -{ - MetaArguments my_args = {NULL, NULL, NULL, FALSE, FALSE, FALSE}; - GOptionEntry options[] = { - { - "sm-disable", 0, 0, G_OPTION_ARG_NONE, - &my_args.disable_sm, - N_("Disable connection to session manager"), - NULL - }, - { - "replace", 0, 0, G_OPTION_ARG_NONE, - &my_args.replace_wm, - N_("Replace the running window manager with Metacity"), - NULL - }, - { - "sm-client-id", 0, 0, G_OPTION_ARG_STRING, - &my_args.client_id, - N_("Specify session management ID"), - "ID" - }, - { - "display", 0, 0, G_OPTION_ARG_STRING, - &my_args.display_name, N_("X Display to use"), - "DISPLAY" - }, - { - "sm-save-file", 0, 0, G_OPTION_ARG_FILENAME, - &my_args.save_file, - N_("Initialize session from savefile"), - "FILE" - }, - { - "version", 0, 0, G_OPTION_ARG_NONE, - &my_args.print_version, - N_("Print version"), - NULL - }, - { - "sync", 0, 0, G_OPTION_ARG_NONE, - &my_args.sync, - N_("Make X calls synchronous"), - NULL - }, - {NULL} - }; - GOptionContext *ctx; - GError *error = NULL; - - ctx = g_option_context_new (NULL); - g_option_context_add_main_entries (ctx, options, "metacity"); - if (!g_option_context_parse (ctx, argc, argv, &error)) - { - g_print ("metacity: %s\n", error->message); - exit(1); - } - g_option_context_free (ctx); - /* Return the parsed options through the meta_args param. */ - *meta_args = my_args; -} - -/** - * Selects which display Metacity should use. It first tries to use - * display_name as the display. If display_name is NULL then - * try to use the environment variable METACITY_DISPLAY. If that - * also is NULL, use the default - :0.0 - */ -static -void meta_select_display (gchar *display_name) -{ - gchar *envVar = ""; - if (display_name) - envVar = g_strconcat ("DISPLAY=", display_name, NULL); - else if (g_getenv ("METACITY_DISPLAY")) - envVar = g_strconcat ("DISPLAY=", - g_getenv ("METACITY_DISPLAY"), NULL); - /* DO NOT FREE envVar, putenv() sucks */ - putenv (envVar); -} - -/** - * This is where the story begins. It parses commandline options and - * environment variables, sets up the screen, hands control off to - * GTK, and cleans up afterwards. - * - * \param argc Number of arguments (as usual) - * \param argv Array of arguments (as usual) - * - * \bug It's a bit long. It would be good to split it out into separate - * functions. - */ -int -main (int argc, char **argv) -{ - struct sigaction act; - sigset_t empty_mask; - MetaArguments meta_args; - const gchar *log_domains[] = { - NULL, G_LOG_DOMAIN, "Gtk", "Gdk", "GLib", - "Pango", "GLib-GObject", "GThread" - }; - guint i; - - if (setlocale (LC_ALL, "") == NULL) - meta_warning ("Locale not understood by C library, internationalization will not work\n"); - - sigemptyset (&empty_mask); - act.sa_handler = SIG_IGN; - act.sa_mask = empty_mask; - act.sa_flags = 0; - if (sigaction (SIGPIPE, &act, NULL) < 0) - g_printerr ("Failed to register SIGPIPE handler: %s\n", - g_strerror (errno)); -#ifdef SIGXFSZ - if (sigaction (SIGXFSZ, &act, NULL) < 0) - g_printerr ("Failed to register SIGXFSZ handler: %s\n", - g_strerror (errno)); -#endif - - if (g_getenv ("METACITY_VERBOSE")) - meta_set_verbose (TRUE); - if (g_getenv ("METACITY_DEBUG")) - meta_set_debugging (TRUE); - - if (g_get_home_dir ()) - chdir (g_get_home_dir ()); - - meta_print_self_identity (); - - bindtextdomain (GETTEXT_PACKAGE, METACITY_LOCALEDIR); - bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8"); - textdomain (GETTEXT_PACKAGE); - - /* Parse command line arguments.*/ - meta_parse_options (&argc, &argv, &meta_args); - - meta_set_syncing (meta_args.sync || (g_getenv ("METACITY_SYNC") != NULL)); - - if (meta_args.print_version) - version (); - - meta_select_display (meta_args.display_name); - - if (meta_args.replace_wm) - meta_set_replace_current_wm (TRUE); - - if (meta_args.save_file && meta_args.client_id) - meta_fatal ("Can't specify both SM save file and SM client id\n"); - - meta_main_loop = g_main_loop_new (NULL, FALSE); - - g_type_init (); - - meta_ui_init (&argc, &argv); - - /* must be after UI init so we can override GDK handlers */ - meta_errors_init (); - - /* Load prefs */ - meta_prefs_init (); - meta_prefs_add_listener (prefs_changed_callback, NULL); - - -#if 1 - - for (i=0; i<G_N_ELEMENTS(log_domains); i++) - g_log_set_handler (log_domains[i], - G_LOG_LEVEL_MASK | G_LOG_FLAG_FATAL | G_LOG_FLAG_RECURSION, - log_handler, NULL); - -#endif - - if (g_getenv ("METACITY_G_FATAL_WARNINGS") != NULL) - g_log_set_always_fatal (G_LOG_LEVEL_MASK); - - meta_ui_set_current_theme (meta_prefs_get_theme (), FALSE); - - /* Try to find some theme that'll work if the theme preference - * doesn't exist. First try Simple (the default theme) then just - * try anything in the themes directory. - */ - if (!meta_ui_have_a_theme ()) - meta_ui_set_current_theme ("Simple", FALSE); - - if (!meta_ui_have_a_theme ()) - { - const char *dir_entry = NULL; - GError *err = NULL; - GDir *themes_dir = NULL; - - if (!(themes_dir = g_dir_open (METACITY_DATADIR"/themes", 0, &err))) - { - meta_fatal (_("Failed to scan themes directory: %s\n"), err->message); - g_error_free (err); - } - else - { - while (((dir_entry = g_dir_read_name (themes_dir)) != NULL) && - (!meta_ui_have_a_theme ())) - { - meta_ui_set_current_theme (dir_entry, FALSE); - } - - g_dir_close (themes_dir); - } - } - - if (!meta_ui_have_a_theme ()) - meta_fatal (_("Could not find a theme! Be sure %s exists and contains the usual themes.\n"), - METACITY_DATADIR"/themes"); - - /* Connect to SM as late as possible - but before managing display, - * or we might try to manage a window before we have the session - * info - */ - if (!meta_args.disable_sm) - { - if (meta_args.client_id == NULL) - { - const gchar *desktop_autostart_id; - - desktop_autostart_id = g_getenv ("DESKTOP_AUTOSTART_ID"); - - if (desktop_autostart_id != NULL) - meta_args.client_id = g_strdup (desktop_autostart_id); - } - - /* Unset DESKTOP_AUTOSTART_ID in order to avoid child processes to - * use the same client id. */ - g_unsetenv ("DESKTOP_AUTOSTART_ID"); - - meta_session_init (meta_args.client_id, meta_args.save_file); - } - /* Free memory possibly allocated by the argument parsing which are - * no longer needed. - */ - g_free (meta_args.save_file); - g_free (meta_args.display_name); - g_free (meta_args.client_id); - - if (!meta_display_open ()) - meta_exit (META_EXIT_ERROR); - - g_main_loop_run (meta_main_loop); - - meta_display_close (meta_get_display (), - CurrentTime); /* I doubt correct timestamps matter here */ - - meta_session_shutdown (); - - if (meta_restart_after_quit) - { - GError *err; - - err = NULL; - if (!g_spawn_async (NULL, - argv, - NULL, - G_SPAWN_SEARCH_PATH, - NULL, - NULL, - NULL, - &err)) - { - meta_fatal (_("Failed to restart: %s\n"), - err->message); - g_error_free (err); /* not reached anyhow */ - meta_exit_code = META_EXIT_ERROR; - } - } - - return meta_exit_code; -} - -/** - * Stops Metacity. This tells the event loop to stop processing; it is rather - * dangerous to use this rather than meta_restart() because this will leave - * the user with no window manager. We generally do this only if, for example, - * the session manager asks us to; we assume the session manager knows what - * it's talking about. - * - * \param code The success or failure code to return to the calling process. - */ -void -meta_quit (MetaExitCode code) -{ - meta_exit_code = code; - - if (g_main_loop_is_running (meta_main_loop)) - g_main_loop_quit (meta_main_loop); -} - -/** - * Restarts Metacity. In practice, this tells the event loop to stop - * processing, having first set the meta_restart_after_quit flag which - * tells Metacity to spawn an identical copy of itself before quitting. - * This happens on receipt of a _METACITY_RESTART_MESSAGE client event. - */ -void -meta_restart (void) -{ - meta_restart_after_quit = TRUE; - meta_quit (META_EXIT_SUCCESS); -} - -/** - * Called on pref changes. (One of several functions of its kind and purpose.) - * - * \bug Why are these particular prefs handled in main.c and not others? - * Should they be? - * - * \param pref Which preference has changed - * \param data Arbitrary data (which we ignore) - */ -static void -prefs_changed_callback (MetaPreference pref, - gpointer data) -{ - switch (pref) - { - case META_PREF_THEME: - meta_ui_set_current_theme (meta_prefs_get_theme (), FALSE); - meta_display_retheme_all (); - break; - - case META_PREF_CURSOR_THEME: - case META_PREF_CURSOR_SIZE: - meta_display_set_cursor_theme (meta_prefs_get_cursor_theme (), - meta_prefs_get_cursor_size ()); - break; - default: - /* handled elsewhere or otherwise */ - break; - } -} |