570 lines
19 KiB
C
570 lines
19 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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#define _GNU_SOURCE
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#include <getopt.h>
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#include <errno.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 <sys/select.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/socket.h>
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#include <sys/time.h>
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#include <sys/un.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <glib.h>
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#include <xcb/xcb.h>
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#include <xcb/shape.h>
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#include <xcb/randr.h>
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#include <xcb/xcb_aux.h>
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#include <xcb/xcb_atom.h>
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#include <xcb/xcb_icccm.h>
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#include "lua.h"
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#include "event.h"
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#include "layout.h"
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#include "screen.h"
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#include "window.h"
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#include "client.h"
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#include "focus.h"
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#include "ewmh.h"
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#include "tag.h"
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#include "dbus.h"
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#include "statusbar.h"
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#include "common/socket.h"
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#include "common/version.h"
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#include "common/configopts.h"
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#include "common/xutil.h"
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bool running = true;
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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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/** Scan X to find windows to manage
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*/
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static void
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scan()
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{
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int i, screen, real_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 = p_new(root_win_t, 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_cookie_t *attr_wins = NULL;
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xcb_get_geometry_cookie_t **geom_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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for(screen = 0; screen < screen_max; screen++)
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{
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/* Get the root window ID associated to this screen */
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root_wins[screen].id = xcb_aux_get_screen(globalconf.connection, screen)->root;
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/* Get the window tree associated to this screen */
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root_wins[screen].tree_cookie = xcb_query_tree_unchecked(globalconf.connection,
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root_wins[screen].id);
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}
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for(screen = 0; screen < screen_max; screen++)
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{
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tree_r = xcb_query_tree_reply(globalconf.connection,
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root_wins[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
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* Window */
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if(!(wins = xcb_query_tree_children(tree_r)))
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eprint("E: cannot get tree children");
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tree_c_len = xcb_query_tree_children_length(tree_r);
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attr_wins = p_new(xcb_get_window_attributes_cookie_t, tree_c_len);
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for(i = 0; i < tree_c_len; i++)
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attr_wins[i] = xcb_get_window_attributes_unchecked(globalconf.connection,
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wins[i]);
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geom_wins = p_new(xcb_get_geometry_cookie_t *, tree_c_len);
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for(i = 0; i < tree_c_len; i++)
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{
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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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if(!attr_r || attr_r->override_redirect ||
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!(attr_r->map_state == XCB_MAP_STATE_VIEWABLE ||
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window_getstate(wins[i]) == XCB_WM_ICONIC_STATE))
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{
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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_new(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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p_delete(&attr_wins);
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for(i = 0; i < tree_c_len; i++)
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{
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if(!geom_wins[i])
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continue;
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if(!(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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real_screen = screen_get_bycoord(globalconf.screens_info, screen,
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geom_r->x, geom_r->y);
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client_manage(wins[i], geom_r, real_screen);
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p_delete(&geom_r);
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p_delete(&geom_wins[i]);
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}
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p_delete(&geom_wins);
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p_delete(&tree_r);
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}
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p_delete(&root_wins);
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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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eprint("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(int sig __attribute__ ((unused)))
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{
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running = false;
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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 edpy display ref
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* \param ee XErrorEvent 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 = xutil_get_error(e);
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if(!err)
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return 0;
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if(e->error_code == BadWindow
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|| (e->error_code == BadMatch && err->request_code == XCB_SET_INPUT_FOCUS)
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|| (e->error_code == BadValue && err->request_code == XCB_KILL_CLIENT)
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|| (err->request_code == XCB_CONFIGURE_WINDOW && e->error_code == BadMatch))
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{
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xutil_delete_error(err);
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return 0;
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}
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warn("fatal error: request=%s, error=%s", err->request_label, err->error_label);
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xutil_delete_error(err);
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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 == BadImplementation)
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exit(EXIT_FAILURE);
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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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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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char buf[1024];
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const char *confpath = NULL;
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int r, xfd, csfd, dbusfd, i, screen_nbr, opt;
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ssize_t cmdlen = 1;
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const xcb_query_extension_reply_t *shape_query, *randr_query;
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fd_set rd;
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xcb_generic_event_t *ev;
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struct sockaddr_un *addr;
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client_t *c;
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struct timeval select_timeout, hook_lastrun = { 0, 0 }, now, hook_nextrun;
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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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{NULL, 0, NULL, 0}
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};
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/* clear the globalconf structure */
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p_clear(&globalconf, 1);
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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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/* check args */
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while((opt = getopt_long(argc, argv, "vhc:",
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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 '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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eprint("-c option requires a file name");
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break;
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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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/* 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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eprint("cannot open display");
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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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/* Allocate a handler which will holds all errors and events */
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globalconf.evenths = xcb_alloc_event_handlers(globalconf.connection);
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xutil_set_error_handler_catch_all(globalconf.evenths, xerrorstart, NULL);
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const uint32_t select_input_val = XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT;
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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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/* 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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xcb_aux_get_screen(globalconf.connection, screen_nbr)->root,
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XCB_CW_EVENT_MASK, &select_input_val);
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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_poll_for_event_loop(globalconf.evenths);
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/* Set the default xerror handler */
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xutil_set_error_handler_catch_all(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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/* Get the NumLock, ShiftLock and CapsLock masks */
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xutil_getlockmask(globalconf.connection, globalconf.keysyms, &globalconf.numlockmask,
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&globalconf.shiftlockmask, &globalconf.capslockmask);
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/* init Atoms cache and then EWMH atoms */
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atom_cache_list_init(&globalconf.atoms);
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ewmh_init_atoms();
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/* init screens struct */
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globalconf.screens_info = screensinfo_new(globalconf.connection);
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globalconf.screens = p_new(screen_t, globalconf.screens_info->nscreen);
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focus_client_push(NULL);
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/* init default font and colors */
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globalconf.font = draw_font_new(globalconf.connection, globalconf.default_screen, "sans 8");
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xcolor_new(globalconf.connection, globalconf.default_screen, "black", &globalconf.colors.fg);
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xcolor_new(globalconf.connection, globalconf.default_screen, "white", &globalconf.colors.bg);
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/* init cursors */
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globalconf.cursor[CurNormal] = xutil_cursor_new(globalconf.connection, CURSOR_LEFT_PTR);
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globalconf.cursor[CurResize] = xutil_cursor_new(globalconf.connection, CURSOR_SIZING);
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globalconf.cursor[CurResizeH] = xutil_cursor_new(globalconf.connection, CURSOR_DOUBLE_ARROW_HORIZ);
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globalconf.cursor[CurResizeV] = xutil_cursor_new(globalconf.connection, CURSOR_DOUBLE_ARROW_VERT);
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globalconf.cursor[CurMove] = xutil_cursor_new(globalconf.connection, CURSOR_FLEUR);
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globalconf.cursor[CurTopRight] = xutil_cursor_new(globalconf.connection, CURSOR_TOP_RIGHT_CORNER);
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globalconf.cursor[CurTopLeft] = xutil_cursor_new(globalconf.connection, CURSOR_TOP_LEFT_CORNER);
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globalconf.cursor[CurBotRight] = xutil_cursor_new(globalconf.connection, CURSOR_BOTTOM_RIGHT_CORNER);
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globalconf.cursor[CurBotLeft] = xutil_cursor_new(globalconf.connection, CURSOR_BOTTOM_LEFT_CORNER);
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/* init lua */
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luaA_init();
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/* parse config */
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if(!confpath)
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confpath = config_file();
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if (!luaA_parserc(confpath))
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eprint("failed to load/parse configuration file %s", confpath);
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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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globalconf.cursor[CurNormal]
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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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{
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xcb_change_window_attributes(globalconf.connection,
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xcb_aux_get_screen(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_set_supported_hints(screen_nbr);
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/* call this to at least grab root window clicks */
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window_root_grabbuttons();
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}
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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_poll_for_event_loop(globalconf.evenths);
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set_button_press_event_handler(globalconf.evenths, event_handle_buttonpress, NULL);
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set_configure_request_event_handler(globalconf.evenths, event_handle_configurerequest, NULL);
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set_configure_notify_event_handler(globalconf.evenths, event_handle_configurenotify, NULL);
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set_destroy_notify_event_handler(globalconf.evenths, event_handle_destroynotify, NULL);
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set_enter_notify_event_handler(globalconf.evenths, event_handle_enternotify, NULL);
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set_expose_event_handler(globalconf.evenths, event_handle_expose, NULL);
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set_key_press_event_handler(globalconf.evenths, event_handle_keypress, NULL);
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set_map_request_event_handler(globalconf.evenths, event_handle_maprequest, NULL);
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set_property_notify_event_handler(globalconf.evenths, event_handle_propertynotify, NULL);
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set_unmap_notify_event_handler(globalconf.evenths, event_handle_unmapnotify, NULL);
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set_client_message_event_handler(globalconf.evenths, event_handle_clientmessage, NULL);
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/* check for shape extension */
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shape_query = xcb_get_extension_data(globalconf.connection, &xcb_shape_id);
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if((globalconf.have_shape = shape_query->present))
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xcb_set_event_handler(globalconf.evenths,
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(shape_query->first_event + XCB_SHAPE_NOTIFY),
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(xcb_generic_event_handler_t) event_handle_shape,
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NULL);
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/* check for randr extension */
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randr_query = xcb_get_extension_data(globalconf.connection, &xcb_randr_id);
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if((globalconf.have_randr = randr_query->present))
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xcb_set_event_handler(globalconf.evenths,
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(randr_query->first_event + XCB_RANDR_SCREEN_CHANGE_NOTIFY),
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(xcb_generic_event_handler_t) event_handle_randr_screen_change_notify,
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NULL);
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xcb_aux_sync(globalconf.connection);
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/* get socket fd */
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csfd = socket_getclient();
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addr = socket_getaddr(getenv("DISPLAY"));
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if(bind(csfd, (const struct sockaddr *) addr, SUN_LEN(addr)))
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{
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if(errno == EADDRINUSE)
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{
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if(unlink(addr->sun_path))
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warn("error unlinking existing file: %s", strerror(errno));
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if(bind(csfd, (const struct sockaddr *) addr, SUN_LEN(addr)))
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warn("error binding UNIX domain socket: %s", strerror(errno));
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}
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else
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warn("error binding UNIX domain socket: %s", strerror(errno));
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}
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if(!a_dbus_init(&dbusfd))
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dbusfd = -1;
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/* register function for signals */
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signal(SIGINT, &exit_on_signal);
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signal(SIGTERM, &exit_on_signal);
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signal(SIGHUP, &exit_on_signal);
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/* refresh everything before waiting events */
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layout_refresh();
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statusbar_refresh();
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/* main event loop */
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while(running)
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|
{
|
|
FD_ZERO(&rd);
|
|
if(csfd >= 0)
|
|
FD_SET(csfd, &rd);
|
|
if(dbusfd >= 0)
|
|
FD_SET(dbusfd, &rd);
|
|
FD_SET(xfd, &rd);
|
|
if(timerisset(&globalconf.timer))
|
|
{
|
|
gettimeofday(&now, NULL);
|
|
timeradd(&hook_lastrun, &globalconf.timer, &hook_nextrun);
|
|
/* Need to do 2 tests, <= does not work with timercmp() */
|
|
if(timercmp(&hook_nextrun, &now, <) || (timercmp(&hook_nextrun, &now, ==)))
|
|
{
|
|
gettimeofday(&hook_lastrun, NULL);
|
|
luaA_dofunction(globalconf.L, globalconf.hooks.timer, 0);
|
|
select_timeout = globalconf.timer;
|
|
}
|
|
else
|
|
timersub(&hook_nextrun, &now, &select_timeout);
|
|
}
|
|
if(select(MAX(MAX(xfd, csfd), dbusfd) + 1, &rd,
|
|
NULL, NULL,
|
|
timerisset(&globalconf.timer) ? &select_timeout : NULL) == -1)
|
|
{
|
|
if(errno == EINTR)
|
|
continue;
|
|
eprint("select failed");
|
|
}
|
|
if(csfd >= 0 && FD_ISSET(csfd, &rd))
|
|
switch(r = recv(csfd, buf, sizeof(buf)-1, MSG_TRUNC))
|
|
{
|
|
case -1:
|
|
warn("error reading UNIX domain socket: %s", strerror(errno));
|
|
csfd = -1;
|
|
break;
|
|
case 0:
|
|
break;
|
|
default:
|
|
if(r >= ssizeof(buf))
|
|
break;
|
|
buf[r] = '\0';
|
|
luaA_docmd(buf);
|
|
}
|
|
|
|
if(dbusfd >= 0 && FD_ISSET(dbusfd, &rd))
|
|
a_dbus_process_requests(&dbusfd);
|
|
|
|
/* Two level polling:
|
|
* We need to first check we have an event to handle
|
|
* and if so, we handle them all in a round.
|
|
* Then when we have refresh()'ed stuff so maybe new XEvent
|
|
* are available and select() won't tell us, so let's check
|
|
* with xcb_poll_for_event() again.
|
|
*/
|
|
while((ev = xcb_poll_for_event(globalconf.connection)))
|
|
{
|
|
do
|
|
{
|
|
xcb_handle_event(globalconf.evenths, ev);
|
|
/* need to resync */
|
|
xcb_aux_sync(globalconf.connection);
|
|
p_delete(&ev);
|
|
} while((ev = xcb_poll_for_event(globalconf.connection)));
|
|
|
|
layout_refresh();
|
|
statusbar_refresh();
|
|
|
|
/* need to resync */
|
|
xcb_aux_sync(globalconf.connection);
|
|
}
|
|
layout_refresh();
|
|
statusbar_refresh();
|
|
xcb_aux_sync(globalconf.connection);
|
|
}
|
|
|
|
a_dbus_cleanup();
|
|
|
|
if(csfd > 0 && close(csfd))
|
|
warn("error closing UNIX domain socket: %s", strerror(errno));
|
|
if(unlink(addr->sun_path))
|
|
warn("error unlinking UNIX domain socket: %s", strerror(errno));
|
|
p_delete(&addr);
|
|
|
|
/* remap all clients since some WM won't handle them otherwise */
|
|
for(c = globalconf.clients; c; c = c->next)
|
|
client_unban(c);
|
|
|
|
xcb_aux_sync(globalconf.connection);
|
|
|
|
xcb_disconnect(globalconf.connection);
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80
|