526 lines
16 KiB
C
526 lines
16 KiB
C
/*
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* awesome.c - awesome main functions
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*
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* Copyright © 2007-2008 Julien Danjou <julien@danjou.info>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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*/
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#include <getopt.h>
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#include <locale.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <signal.h>
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#include <ev.h>
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#include <xcb/xcb_event.h>
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#include "awesome.h"
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#include "client.h"
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#include "window.h"
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#include "ewmh.h"
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#include "dbus.h"
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#include "systray.h"
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#include "event.h"
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#include "property.h"
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#include "screen.h"
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#include "common/version.h"
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#include "common/atoms.h"
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#include "common/xcursor.h"
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#include "config.h"
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awesome_t globalconf;
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typedef struct
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{
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xcb_window_t id;
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xcb_query_tree_cookie_t tree_cookie;
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} root_win_t;
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/** Call before exiting.
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*/
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void
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awesome_atexit(void)
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{
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client_t *c;
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xembed_window_t *em;
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int screen_nbr;
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a_dbus_cleanup();
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luaA_cs_cleanup();
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/* reparent systray windows, otherwise they may die with their master */
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for(em = globalconf.embedded; em; em = em->next)
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{
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xcb_screen_t *s = xutil_screen_get(globalconf.connection, em->phys_screen);
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xembed_window_unembed(globalconf.connection, em->win, s->root);
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}
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/* do this only for real screen */
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for(screen_nbr = 0;
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screen_nbr < xcb_setup_roots_length(xcb_get_setup(globalconf.connection));
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screen_nbr++)
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systray_cleanup(screen_nbr);
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/* remap all clients since some WM won't handle them otherwise */
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for(c = globalconf.clients; c; c = c->next)
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client_unban(c);
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xcb_flush(globalconf.connection);
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xcb_disconnect(globalconf.connection);
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}
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/** Scan X to find windows to manage.
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*/
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static void
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scan(void)
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{
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int i, screen, phys_screen, tree_c_len;
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const int screen_max = xcb_setup_roots_length(xcb_get_setup(globalconf.connection));
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root_win_t root_wins[screen_max];
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xcb_query_tree_reply_t *tree_r;
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xcb_window_t *wins = NULL;
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xcb_get_window_attributes_reply_t *attr_r;
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xcb_get_geometry_reply_t *geom_r;
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long state;
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for(phys_screen = 0; phys_screen < screen_max; phys_screen++)
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{
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/* Get the root window ID associated to this screen */
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root_wins[phys_screen].id = xutil_screen_get(globalconf.connection, phys_screen)->root;
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/* Get the window tree associated to this screen */
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root_wins[phys_screen].tree_cookie = xcb_query_tree_unchecked(globalconf.connection,
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root_wins[phys_screen].id);
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}
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for(phys_screen = 0; phys_screen < screen_max; phys_screen++)
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{
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tree_r = xcb_query_tree_reply(globalconf.connection,
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root_wins[phys_screen].tree_cookie,
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NULL);
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if(!tree_r)
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continue;
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/* Get the tree of the children windows of the current root window */
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if(!(wins = xcb_query_tree_children(tree_r)))
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fatal("E: cannot get tree children");
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tree_c_len = xcb_query_tree_children_length(tree_r);
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xcb_get_window_attributes_cookie_t attr_wins[tree_c_len];
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xcb_get_property_cookie_t state_wins[tree_c_len];
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for(i = 0; i < tree_c_len; i++)
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{
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attr_wins[i] = xcb_get_window_attributes_unchecked(globalconf.connection,
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wins[i]);
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state_wins[i] = window_state_get_unchecked(wins[i]);
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}
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xcb_get_geometry_cookie_t *geom_wins[tree_c_len];
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for(i = 0; i < tree_c_len; i++)
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{
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bool has_awesome_prop;
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attr_r = xcb_get_window_attributes_reply(globalconf.connection,
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attr_wins[i],
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NULL);
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state = window_state_get_reply(state_wins[i]);
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has_awesome_prop = xutil_text_prop_get(globalconf.connection, wins[i],
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_AWESOME_TAGS, NULL, NULL);
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if(!attr_r || attr_r->override_redirect
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|| (attr_r->map_state != XCB_MAP_STATE_VIEWABLE && !has_awesome_prop)
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|| (state == XCB_WM_STATE_WITHDRAWN && !has_awesome_prop))
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{
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geom_wins[i] = NULL;
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p_delete(&attr_r);
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continue;
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}
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p_delete(&attr_r);
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/* Get the geometry of the current window */
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geom_wins[i] = p_alloca(xcb_get_geometry_cookie_t, 1);
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*(geom_wins[i]) = xcb_get_geometry_unchecked(globalconf.connection, wins[i]);
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}
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for(i = 0; i < tree_c_len; i++)
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{
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if(!geom_wins[i] || !(geom_r = xcb_get_geometry_reply(globalconf.connection,
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*(geom_wins[i]), NULL)))
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continue;
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screen = screen_getbycoord(phys_screen, geom_r->x, geom_r->y);
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client_manage(wins[i], geom_r, phys_screen, screen);
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p_delete(&geom_r);
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}
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p_delete(&tree_r);
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}
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}
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static void
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a_xcb_check_cb(EV_P_ ev_check *w, int revents)
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{
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xcb_event_poll_for_event_loop(&globalconf.evenths);
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awesome_refresh(globalconf.connection);
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}
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static void
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a_xcb_io_cb(EV_P_ ev_io *w, int revents)
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{
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/* empty */
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}
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/** Startup Error handler to check if another window manager
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* is already running.
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* \param data Additional optional parameters data.
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* \param c X connection.
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* \param error Error event.
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*/
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static int __attribute__ ((noreturn))
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xerrorstart(void * data __attribute__ ((unused)),
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xcb_connection_t * c __attribute__ ((unused)),
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xcb_generic_error_t * error __attribute__ ((unused)))
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{
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fatal("another window manager is already running");
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}
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/** Function to exit on some signals.
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* \param sig the signal received, unused
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*/
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static void
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exit_on_signal(EV_P_ ev_signal *w, int revents)
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{
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ev_unloop(EV_A_ 1);
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}
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void
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awesome_restart(void)
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{
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awesome_atexit();
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a_exec(globalconf.argv);
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}
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/** Function to restart aweome on some signals.
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* \param sig the signam received, unused
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*/
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static void
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restart_on_signal(EV_P_ ev_signal *w, int revents)
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{
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awesome_restart();
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}
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/** \brief awesome xerror function.
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* There's no way to check accesses to destroyed windows, thus those cases are
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* ignored (especially on UnmapNotify's). Other types of errors call Xlibs
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* default error handler, which may call exit.
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* \param data Currently unused.
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* \param c The connectiont to the X server.
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* \param e The error event.
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* \return 0 if no error, or xerror's xlib return status.
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*/
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static int
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xerror(void *data __attribute__ ((unused)),
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xcb_connection_t *c __attribute__ ((unused)),
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xcb_generic_error_t *e)
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{
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xutil_error_t err;
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if(!xutil_error_init(e, &err))
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return 0;
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/* ignore this */
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if(e->error_code == XUTIL_BAD_WINDOW
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|| (e->error_code == XUTIL_BAD_MATCH && err.request_code == XCB_SET_INPUT_FOCUS)
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|| (e->error_code == XUTIL_BAD_VALUE && err.request_code == XCB_KILL_CLIENT)
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|| (err.request_code == XCB_CONFIGURE_WINDOW && e->error_code == XUTIL_BAD_MATCH))
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goto bailout;
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warn("X error: request=%s, error=%s", err.request_label, err.error_label);
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/*
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* Xlib code was using default X error handler, namely
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* '_XDefaultError()', which displays more informations about the
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* error and also exit if 'error_code'' equals to
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* 'BadImplementation'
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*
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* \todo display more informations about the error (like the Xlib default error handler)
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*/
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if(e->error_code == XUTIL_BAD_IMPLEMENTATION)
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fatal("X error: request=%s, error=%s", err.request_label, err.error_label);
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bailout:
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xutil_error_wipe(&err);
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return 0;
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}
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/** Print help and exit(2) with given exit_code.
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* \param exit_code The exit code.
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*/
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static void __attribute__ ((noreturn))
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exit_help(int exit_code)
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{
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FILE *outfile = (exit_code == EXIT_SUCCESS) ? stdout : stderr;
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fprintf(outfile,
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"Usage: awesome [OPTION]\n\
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-h, --help show help\n\
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-v, --version show version\n\
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-c, --config FILE configuration file to use\n\
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-k, --check check configuration file syntax\n");
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exit(exit_code);
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}
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/** Hello, this is main.
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* \param argc Who knows.
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* \param argv Who knows.
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* \return EXIT_SUCCESS I hope.
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*/
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int
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main(int argc, char **argv)
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{
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const char *confpath = NULL;
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int xfd, i, screen_nbr, opt, colors_nbr;
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xcolor_init_request_t colors_reqs[2];
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xcb_get_modifier_mapping_cookie_t xmapping_cookie;
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ssize_t cmdlen = 1;
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static struct option long_options[] =
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{
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{ "help", 0, NULL, 'h' },
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{ "version", 0, NULL, 'v' },
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{ "config", 1, NULL, 'c' },
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{ "check", 0, NULL, 'k' },
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{ NULL, 0, NULL, 0 }
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};
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/* event loop watchers */
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ev_io xio = { .fd = -1 };
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ev_check xcheck;
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ev_signal sigint;
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ev_signal sigterm;
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ev_signal sighup;
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/* clear the globalconf structure */
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p_clear(&globalconf, 1);
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globalconf.keygrabber = LUA_REFNIL;
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/* save argv */
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for(i = 0; i < argc; i++)
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cmdlen += a_strlen(argv[i]) + 1;
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globalconf.argv = p_new(char, cmdlen);
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a_strcpy(globalconf.argv, cmdlen, argv[0]);
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for(i = 1; i < argc; i++)
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{
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a_strcat(globalconf.argv, cmdlen, " ");
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a_strcat(globalconf.argv, cmdlen, argv[i]);
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}
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/* Text won't be printed correctly otherwise */
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setlocale(LC_CTYPE, "");
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/* init lua */
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luaA_init();
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/* check args */
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while((opt = getopt_long(argc, argv, "vhkc:",
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long_options, NULL)) != -1)
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switch(opt)
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{
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case 'v':
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eprint_version("awesome");
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break;
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case 'h':
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exit_help(EXIT_SUCCESS);
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break;
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case 'k':
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if(!luaA_parserc(confpath, false))
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{
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fprintf(stderr, "✘ Configuration file syntax error.\n");
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return EXIT_FAILURE;
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}
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else
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{
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fprintf(stderr, "✔ Configuration file syntax OK.\n");
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return EXIT_SUCCESS;
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}
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case 'c':
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if(a_strlen(optarg))
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confpath = a_strdup(optarg);
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else
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fatal("-c option requires a file name");
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break;
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}
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globalconf.loop = ev_default_loop(0);
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ev_timer_init(&globalconf.timer, &luaA_on_timer, 0., 0.);
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/* register function for signals */
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ev_signal_init(&sigint, exit_on_signal, SIGINT);
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ev_signal_init(&sigterm, exit_on_signal, SIGTERM);
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ev_signal_init(&sighup, restart_on_signal, SIGHUP);
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ev_signal_start(globalconf.loop, &sigint);
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ev_signal_start(globalconf.loop, &sigterm);
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ev_signal_start(globalconf.loop, &sighup);
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ev_unref(globalconf.loop);
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ev_unref(globalconf.loop);
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ev_unref(globalconf.loop);
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/* X stuff */
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globalconf.connection = xcb_connect(NULL, &globalconf.default_screen);
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if(xcb_connection_has_error(globalconf.connection))
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fatal("cannot open display");
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/* Grab server */
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xcb_grab_server(globalconf.connection);
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xcb_flush(globalconf.connection);
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/* Get the file descriptor corresponding to the X connection */
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xfd = xcb_get_file_descriptor(globalconf.connection);
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ev_io_init(&xio, &a_xcb_io_cb, xfd, EV_READ);
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ev_io_start(globalconf.loop, &xio);
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ev_check_init(&xcheck, &a_xcb_check_cb);
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ev_check_start(globalconf.loop, &xcheck);
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ev_unref(globalconf.loop);
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/* Allocate a handler which will holds all errors and events */
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xcb_event_handlers_init(globalconf.connection, &globalconf.evenths);
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xutil_error_handler_catch_all_set(&globalconf.evenths, xerrorstart, NULL);
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for(screen_nbr = 0;
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screen_nbr < xcb_setup_roots_length(xcb_get_setup(globalconf.connection));
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screen_nbr++)
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{
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const uint32_t select_input_val = XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT;
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/* This causes an error if some other window manager is running */
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xcb_change_window_attributes(globalconf.connection,
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xutil_screen_get(globalconf.connection, screen_nbr)->root,
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XCB_CW_EVENT_MASK, &select_input_val);
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}
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/* Need to xcb_flush to validate error handler */
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xcb_aux_sync(globalconf.connection);
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/* Process all errors in the queue if any */
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xcb_event_poll_for_event_loop(&globalconf.evenths);
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/* Set the default xerror handler */
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xutil_error_handler_catch_all_set(&globalconf.evenths, xerror, NULL);
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/* Allocate the key symbols */
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globalconf.keysyms = xcb_key_symbols_alloc(globalconf.connection);
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/* Send the request to get the NumLock, ShiftLock and CapsLock
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masks */
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xmapping_cookie = xcb_get_modifier_mapping_unchecked(globalconf.connection);
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/* init atom cache */
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atoms_init(globalconf.connection);
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/* init screens information */
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screen_scan();
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/* init default font and colors */
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colors_reqs[0] = xcolor_init_unchecked(&globalconf.colors.fg,
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"black", sizeof("black") - 1);
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colors_reqs[1] = xcolor_init_unchecked(&globalconf.colors.bg,
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"white", sizeof("white") - 1);
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globalconf.font = draw_font_new("sans 8");
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for(colors_nbr = 0; colors_nbr < 2; colors_nbr++)
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xcolor_init_reply(colors_reqs[colors_nbr]);
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/* Process the reply of previously sent mapping request */
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xutil_lock_mask_get(globalconf.connection, xmapping_cookie,
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globalconf.keysyms, &globalconf.numlockmask,
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&globalconf.shiftlockmask, &globalconf.capslockmask);
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/* do this only for real screen */
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for(screen_nbr = 0;
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screen_nbr < xcb_setup_roots_length(xcb_get_setup(globalconf.connection));
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screen_nbr++)
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{
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/* select for events */
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const uint32_t change_win_vals[] =
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{
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XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT | XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY
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| XCB_EVENT_MASK_ENTER_WINDOW | XCB_EVENT_MASK_LEAVE_WINDOW
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| XCB_EVENT_MASK_STRUCTURE_NOTIFY
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| XCB_EVENT_MASK_PROPERTY_CHANGE,
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xcursor_new(globalconf.connection, XC_left_ptr)
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};
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xcb_change_window_attributes(globalconf.connection,
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xutil_screen_get(globalconf.connection, screen_nbr)->root,
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XCB_CW_EVENT_MASK | XCB_CW_CURSOR,
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change_win_vals);
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ewmh_init(screen_nbr);
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systray_init(screen_nbr);
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}
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/* Parse and run configuration file */
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luaA_parserc(confpath, true);
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/* scan existing windows */
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scan();
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/* process all errors in the queue if any */
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xcb_event_poll_for_event_loop(&globalconf.evenths);
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a_xcb_set_event_handlers();
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a_xcb_set_property_handlers();
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/* Grab server */
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xcb_ungrab_server(globalconf.connection);
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xcb_aux_sync(globalconf.connection);
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luaA_cs_init();
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a_dbus_init();
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|
|
|
/* refresh everything before waiting events */
|
|
awesome_refresh(globalconf.connection);
|
|
|
|
/* main event loop */
|
|
ev_loop(globalconf.loop, 0);
|
|
|
|
/* cleanup event loop */
|
|
ev_ref(globalconf.loop);
|
|
ev_check_stop(globalconf.loop, &xcheck);
|
|
ev_ref(globalconf.loop);
|
|
ev_io_stop(globalconf.loop, &xio);
|
|
|
|
awesome_atexit();
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80
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