565 lines
17 KiB
C
565 lines
17 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 "awesome.h"
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#include "banning.h"
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#include "common/atoms.h"
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#include "common/backtrace.h"
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#include "common/version.h"
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#include "common/xutil.h"
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#include "dbus.h"
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#include "event.h"
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#include "ewmh.h"
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#include "globalconf.h"
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#include "objects/client.h"
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#include "objects/screen.h"
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#include "spawn.h"
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#include "systray.h"
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#include "xwindow.h"
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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 <sys/time.h>
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#include <xcb/bigreq.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_event.h>
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#include <xcb/xinerama.h>
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#include <xcb/xtest.h>
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#include <xcb/shape.h>
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#include <glib-unix.h>
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awesome_t globalconf;
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/** argv used to run awesome */
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static char *awesome_argv;
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/** time of last main loop wakeup */
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static struct timeval last_wakeup;
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/** current limit for the main loop's runtime */
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static float main_loop_iteration_limit = 0.1;
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/** Call before exiting.
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*/
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void
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awesome_atexit(bool restart)
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{
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lua_State *L = globalconf_get_lua_State();
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lua_pushboolean(L, restart);
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signal_object_emit(L, &global_signals, "exit", 1);
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/* Move clients where we want them to be */
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foreach(c, globalconf.clients)
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{
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xcb_reparent_window(globalconf.connection, (*c)->window, globalconf.screen->root,
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(*c)->geometry.x, (*c)->geometry.y);
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}
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a_dbus_cleanup();
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systray_cleanup();
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/* Close Lua */
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lua_close(L);
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/* X11 is a great protocol. There is a save-set so that reparenting WMs
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* don't kill clients when they shut down. However, when a focused windows
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* is saved, the focus will move to its parent with revert-to none.
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* Immediately afterwards, this parent is destroyed and the focus is gone.
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* Work around this by placing the focus where we like it to be.
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*/
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xcb_set_input_focus(globalconf.connection, XCB_INPUT_FOCUS_POINTER_ROOT,
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XCB_NONE, XCB_CURRENT_TIME);
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xcb_aux_sync(globalconf.connection);
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/* Disconnect *after* closing lua */
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xcb_cursor_context_free(globalconf.cursor_ctx);
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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(xcb_query_tree_cookie_t tree_c)
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{
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int i, tree_c_len;
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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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tree_r = xcb_query_tree_reply(globalconf.connection,
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tree_c,
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NULL);
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if(!tree_r)
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return;
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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("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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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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attr_wins[i] = xcb_get_window_attributes_unchecked(globalconf.connection,
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wins[i]);
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state_wins[i] = xwindow_get_state_unchecked(wins[i]);
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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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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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geom_r = xcb_get_geometry_reply(globalconf.connection, geom_wins[i], NULL);
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state = xwindow_get_state_reply(state_wins[i]);
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if(!attr_r || attr_r->override_redirect
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|| attr_r->map_state == XCB_MAP_STATE_UNMAPPED
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|| state == XCB_ICCCM_WM_STATE_WITHDRAWN)
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{
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p_delete(&attr_r);
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p_delete(&geom_r);
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continue;
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}
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client_manage(wins[i], geom_r, attr_r);
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p_delete(&attr_r);
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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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static void
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a_xcb_check(void)
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{
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xcb_generic_event_t *mouse = NULL, *event;
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while((event = xcb_poll_for_event(globalconf.connection)))
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{
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/* We will treat mouse events later.
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* We cannot afford to treat all mouse motion events,
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* because that would be too much CPU intensive, so we just
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* take the last we get after a bunch of events. */
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if(XCB_EVENT_RESPONSE_TYPE(event) == XCB_MOTION_NOTIFY)
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{
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p_delete(&mouse);
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mouse = event;
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}
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else
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{
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uint8_t type = XCB_EVENT_RESPONSE_TYPE(event);
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if(mouse && (type == XCB_ENTER_NOTIFY || type == XCB_LEAVE_NOTIFY
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|| type == XCB_BUTTON_PRESS || type == XCB_BUTTON_RELEASE))
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{
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/* Make sure enter/motion/leave/press/release events are handled
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* in the correct order */
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event_handle(mouse);
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p_delete(&mouse);
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}
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event_handle(event);
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p_delete(&event);
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}
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}
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if(mouse)
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{
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event_handle(mouse);
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p_delete(&mouse);
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}
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}
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static gboolean
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a_xcb_io_cb(GIOChannel *source, GIOCondition cond, gpointer data)
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{
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/* a_xcb_check() already handled all events */
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if(xcb_connection_has_error(globalconf.connection))
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fatal("X server connection broke (error %d)",
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xcb_connection_has_error(globalconf.connection));
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return TRUE;
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}
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static gint
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a_glib_poll(GPollFD *ufds, guint nfsd, gint timeout)
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{
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guint res;
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struct timeval now, length_time;
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float length;
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/* Do all deferred work now */
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awesome_refresh();
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/* Check how long this main loop iteration took */
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gettimeofday(&now, NULL);
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timersub(&now, &last_wakeup, &length_time);
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length = length_time.tv_sec + length_time.tv_usec * 1.0f / 1e6;
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if (length > main_loop_iteration_limit) {
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warn("Last main loop iteration took %.6f seconds! Increasing limit for "
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"this warning to that value.", length);
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main_loop_iteration_limit = length;
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}
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/* Actually do the polling, record time of wakeup and check for new xcb events */
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res = g_poll(ufds, nfsd, timeout);
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gettimeofday(&last_wakeup, NULL);
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a_xcb_check();
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return res;
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}
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static void
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signal_fatal(int signum)
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{
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buffer_t buf;
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backtrace_get(&buf);
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fatal("signal %d, dumping backtrace\n%s", signum, buf.s);
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}
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/** Function to exit on some signals.
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* \param data currently unused
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*/
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static gboolean
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exit_on_signal(gpointer data)
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{
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g_main_loop_quit(globalconf.loop);
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return TRUE;
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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(true);
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a_exec(awesome_argv);
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}
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/** Function to restart awesome on some signals.
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* \param data currently unused
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*/
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static gboolean
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restart_on_signal(gpointer data)
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{
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awesome_restart();
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return TRUE;
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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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char *confpath = NULL;
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int xfd, i, opt;
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ssize_t cmdlen = 1;
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xdgHandle xdg;
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bool no_argb = false;
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bool run_test = false;
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xcb_query_tree_cookie_t tree_c;
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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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{ "no-argb", 0, NULL, 'a' },
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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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globalconf.keygrabber = LUA_REFNIL;
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globalconf.mousegrabber = LUA_REFNIL;
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buffer_init(&globalconf.startup_errors);
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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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awesome_argv = p_new(char, cmdlen);
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a_strcpy(awesome_argv, cmdlen, argv[0]);
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for(i = 1; i < argc; i++)
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{
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a_strcat(awesome_argv, cmdlen, " ");
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a_strcat(awesome_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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/* Get XDG basedir data */
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xdgInitHandle(&xdg);
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/* init lua */
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luaA_init(&xdg);
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/* check args */
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while((opt = getopt_long(argc, argv, "vhkc:a",
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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();
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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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run_test = true;
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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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fatal("-c option requires a file name");
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break;
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case 'a':
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no_argb = true;
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break;
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}
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if (run_test)
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{
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if(!luaA_parserc(&xdg, 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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}
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/* register function for signals */
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g_unix_signal_add(SIGINT, exit_on_signal, NULL);
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g_unix_signal_add(SIGTERM, exit_on_signal, NULL);
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g_unix_signal_add(SIGHUP, restart_on_signal, NULL);
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struct sigaction sa = { .sa_handler = signal_fatal, .sa_flags = SA_RESETHAND };
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sigemptyset(&sa.sa_mask);
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sigaction(SIGABRT, &sa, 0);
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sigaction(SIGBUS, &sa, 0);
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sigaction(SIGFPE, &sa, 0);
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sigaction(SIGILL, &sa, 0);
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sigaction(SIGSEGV, &sa, 0);
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/* We have no clue where the input focus is right now */
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globalconf.focus.need_update = true;
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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 (error %d)", xcb_connection_has_error(globalconf.connection));
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globalconf.screen = xcb_aux_get_screen(globalconf.connection, globalconf.default_screen);
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globalconf.default_visual = draw_default_visual(globalconf.screen);
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if(!no_argb)
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globalconf.visual = draw_argb_visual(globalconf.screen);
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if(!globalconf.visual)
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globalconf.visual = globalconf.default_visual;
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globalconf.default_depth = draw_visual_depth(globalconf.screen, globalconf.visual->visual_id);
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globalconf.default_cmap = globalconf.screen->default_colormap;
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if(globalconf.default_depth != globalconf.screen->root_depth)
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{
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// We need our own color map if we aren't using the default depth
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globalconf.default_cmap = xcb_generate_id(globalconf.connection);
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xcb_create_colormap(globalconf.connection, XCB_COLORMAP_ALLOC_NONE,
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globalconf.default_cmap, globalconf.screen->root,
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globalconf.visual->visual_id);
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}
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/* Prefetch all the extensions we might need */
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xcb_prefetch_extension_data(globalconf.connection, &xcb_big_requests_id);
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xcb_prefetch_extension_data(globalconf.connection, &xcb_test_id);
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xcb_prefetch_extension_data(globalconf.connection, &xcb_randr_id);
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xcb_prefetch_extension_data(globalconf.connection, &xcb_xinerama_id);
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xcb_prefetch_extension_data(globalconf.connection, &xcb_shape_id);
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if (xcb_cursor_context_new(globalconf.connection, globalconf.screen, &globalconf.cursor_ctx) < 0)
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fatal("Failed to initialize xcb-cursor");
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/* initialize dbus */
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a_dbus_init();
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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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GIOChannel *channel = g_io_channel_unix_new(xfd);
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g_io_add_watch(channel, G_IO_IN, a_xcb_io_cb, NULL);
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g_io_channel_unref(channel);
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/* Grab server */
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xcb_grab_server(globalconf.connection);
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{
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const uint32_t select_input_val = XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT;
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xcb_void_cookie_t cookie;
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/* This causes an error if some other window manager is running */
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cookie = xcb_change_window_attributes_checked(globalconf.connection,
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globalconf.screen->root,
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XCB_CW_EVENT_MASK, &select_input_val);
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if (xcb_request_check(globalconf.connection, cookie))
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fatal("another window manager is already running");
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}
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/* Prefetch the maximum request length */
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xcb_prefetch_maximum_request_length(globalconf.connection);
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/* check for xtest extension */
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const xcb_query_extension_reply_t *query;
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query = xcb_get_extension_data(globalconf.connection, &xcb_test_id);
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globalconf.have_xtest = query->present;
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/* check for shape extension */
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query = xcb_get_extension_data(globalconf.connection, &xcb_shape_id);
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globalconf.have_shape = query->present;
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/* Allocate the key symbols */
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globalconf.keysyms = xcb_key_symbols_alloc(globalconf.connection);
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xcb_get_modifier_mapping_cookie_t xmapping_cookie =
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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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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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&globalconf.modeswitchmask);
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/* do this only for real screen */
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ewmh_init();
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systray_init();
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/* init spawn (sn) */
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spawn_init();
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/* The default GC is just a newly created associated with a window with
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* depth globalconf.default_depth */
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xcb_window_t tmp_win = xcb_generate_id(globalconf.connection);
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globalconf.gc = xcb_generate_id(globalconf.connection);
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xcb_create_window(globalconf.connection, globalconf.default_depth,
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tmp_win, globalconf.screen->root,
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-1, -1, 1, 1, 0,
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XCB_COPY_FROM_PARENT, globalconf.visual->visual_id,
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XCB_CW_BACK_PIXEL | XCB_CW_BORDER_PIXEL | XCB_CW_COLORMAP,
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(const uint32_t [])
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{
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globalconf.screen->black_pixel,
|
|
globalconf.screen->black_pixel,
|
|
globalconf.default_cmap
|
|
});
|
|
xcb_create_gc(globalconf.connection, globalconf.gc, tmp_win, XCB_GC_FOREGROUND | XCB_GC_BACKGROUND,
|
|
(const uint32_t[]) { globalconf.screen->black_pixel, globalconf.screen->white_pixel });
|
|
xcb_destroy_window(globalconf.connection, tmp_win);
|
|
|
|
/* Get the window tree associated to this screen */
|
|
tree_c = xcb_query_tree_unchecked(globalconf.connection,
|
|
globalconf.screen->root);
|
|
|
|
xcb_change_window_attributes(globalconf.connection,
|
|
globalconf.screen->root,
|
|
XCB_CW_EVENT_MASK,
|
|
ROOT_WINDOW_EVENT_MASK);
|
|
|
|
/* we will receive events, stop grabbing server */
|
|
xcb_ungrab_server(globalconf.connection);
|
|
xcb_flush(globalconf.connection);
|
|
|
|
/* Parse and run configuration file */
|
|
if (!luaA_parserc(&xdg, confpath, true))
|
|
fatal("couldn't find any rc file");
|
|
|
|
p_delete(&confpath);
|
|
|
|
xdgWipeHandle(&xdg);
|
|
|
|
/* scan existing windows */
|
|
scan(tree_c);
|
|
|
|
luaA_emit_startup();
|
|
xcb_flush(globalconf.connection);
|
|
|
|
/* Setup the main context */
|
|
g_main_context_set_poll_func(g_main_context_default(), &a_glib_poll);
|
|
gettimeofday(&last_wakeup, NULL);
|
|
|
|
/* Do all deferred work now once outside of the loop to get awesome.startup
|
|
* right. */
|
|
awesome_refresh();
|
|
|
|
/* main event loop */
|
|
globalconf.loop = g_main_loop_new(NULL, FALSE);
|
|
g_main_loop_run(globalconf.loop);
|
|
g_main_loop_unref(globalconf.loop);
|
|
globalconf.loop = NULL;
|
|
|
|
awesome_atexit(false);
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
|