510 lines
19 KiB
C
510 lines
19 KiB
C
/*
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* vim:ts=8:expandtab
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*
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* i3 - an improved dynamic tiling window manager
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*
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* © 2009 Michael Stapelberg and contributors
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*
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* See file LICENSE for license information.
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*
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*/
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#include <stdio.h>
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#include <assert.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <stdbool.h>
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#include <assert.h>
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#include <limits.h>
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#include <locale.h>
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#include <fcntl.h>
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#include <getopt.h>
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#include <X11/XKBlib.h>
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#include <X11/extensions/XKB.h>
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#include <xcb/xcb.h>
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#include <xcb/xcb_atom.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/xcb_property.h>
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#include <xcb/xcb_keysyms.h>
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#include <xcb/xcb_icccm.h>
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#include <xcb/xinerama.h>
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#include <ev.h>
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#include "config.h"
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#include "data.h"
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#include "debug.h"
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#include "handlers.h"
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#include "click.h"
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#include "i3.h"
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#include "layout.h"
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#include "queue.h"
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#include "table.h"
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#include "util.h"
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#include "xcb.h"
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#include "xinerama.h"
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#include "manage.h"
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#include "ipc.h"
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#include "log.h"
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xcb_connection_t *global_conn;
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/* This is the path to i3, copied from argv[0] when starting up */
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char **start_argv;
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/* This is our connection to X11 for use with XKB */
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Display *xkbdpy;
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xcb_key_symbols_t *keysyms;
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/* The list of key bindings */
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struct bindings_head *bindings;
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/* The list of exec-lines */
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struct autostarts_head autostarts = TAILQ_HEAD_INITIALIZER(autostarts);
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/* The list of assignments */
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struct assignments_head assignments = TAILQ_HEAD_INITIALIZER(assignments);
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/* This is a list of Stack_Windows, global, for easier/faster access on expose events */
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struct stack_wins_head stack_wins = SLIST_HEAD_INITIALIZER(stack_wins);
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/* The event handlers need to be global because they are accessed by our custom event handler
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in handle_button_press(), needed for graphical resizing */
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xcb_event_handlers_t evenths;
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xcb_atom_t atoms[NUM_ATOMS];
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xcb_window_t root;
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int num_screens = 0;
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/* The depth of the root screen (used e.g. for creating new pixmaps later) */
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uint8_t root_depth;
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/* We hope that XKB is supported and set this to false */
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bool xkb_supported = true;
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/*
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* This callback is only a dummy, see xcb_prepare_cb and xcb_check_cb.
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* See also man libev(3): "ev_prepare" and "ev_check" - customise your event loop
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*
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*/
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static void xcb_got_event(EV_P_ struct ev_io *w, int revents) {
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/* empty, because xcb_prepare_cb and xcb_check_cb are used */
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}
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/*
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* Flush before blocking (and waiting for new events)
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*
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*/
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static void xcb_prepare_cb(EV_P_ ev_prepare *w, int revents) {
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xcb_flush(evenths.c);
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}
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/*
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* Instead of polling the X connection socket we leave this to
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* xcb_poll_for_event() which knows better than we can ever know.
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*
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*/
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static void xcb_check_cb(EV_P_ ev_check *w, int revents) {
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xcb_generic_event_t *event;
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while ((event = xcb_poll_for_event(evenths.c)) != NULL) {
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xcb_event_handle(&evenths, event);
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free(event);
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}
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}
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/*
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* When using xmodmap to change the keyboard mapping, this event
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* is only sent via XKB. Therefore, we need this special handler.
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*
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*/
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static void xkb_got_event(EV_P_ struct ev_io *w, int revents) {
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DLOG("Handling XKB event\n");
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XEvent ev;
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/* When using xmodmap, every change (!) gets an own event.
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* Therefore, we just read all events and only handle the
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* mapping_notify once (we do not receive any other XKB
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* events anyway). */
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while (XPending(xkbdpy))
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XNextEvent(xkbdpy, &ev);
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xcb_key_symbols_free(keysyms);
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keysyms = xcb_key_symbols_alloc(global_conn);
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xcb_get_numlock_mask(global_conn);
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ungrab_all_keys(global_conn);
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DLOG("Re-grabbing...\n");
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grab_all_keys(global_conn);
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DLOG("Done\n");
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}
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int main(int argc, char *argv[], char *env[]) {
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int i, screens, opt;
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char *override_configpath = NULL;
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bool autostart = true;
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xcb_connection_t *conn;
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xcb_property_handlers_t prophs;
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xcb_intern_atom_cookie_t atom_cookies[NUM_ATOMS];
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static struct option long_options[] = {
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{"no-autostart", no_argument, 0, 'a'},
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{"config", required_argument, 0, 'c'},
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{"version", no_argument, 0, 'v'},
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{"help", no_argument, 0, 'h'},
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{0, 0, 0, 0}
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};
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int option_index = 0;
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setlocale(LC_ALL, "");
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/* Disable output buffering to make redirects in .xsession actually useful for debugging */
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if (!isatty(fileno(stdout)))
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setbuf(stdout, NULL);
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start_argv = argv;
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while ((opt = getopt_long(argc, argv, "c:vahld:V", long_options, &option_index)) != -1) {
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switch (opt) {
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case 'a':
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LOG("Autostart disabled using -a\n");
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autostart = false;
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break;
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case 'c':
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override_configpath = sstrdup(optarg);
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break;
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case 'v':
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printf("i3 version " I3_VERSION " © 2009 Michael Stapelberg and contributors\n");
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exit(EXIT_SUCCESS);
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case 'V':
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set_verbosity(true);
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break;
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case 'd':
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LOG("Enabling debug loglevel %s\n", optarg);
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add_loglevel(optarg);
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break;
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case 'l':
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/* DEPRECATED, ignored for the next 3 versions (3.e, 3.f, 3.g) */
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break;
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default:
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fprintf(stderr, "Usage: %s [-c configfile] [-d loglevel] [-a] [-v] [-V]\n", argv[0]);
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fprintf(stderr, "\n");
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fprintf(stderr, "-a: disable autostart\n");
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fprintf(stderr, "-v: display version and exit\n");
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fprintf(stderr, "-V: enable verbose mode\n");
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fprintf(stderr, "-d <loglevel>: enable debug loglevel <loglevel>\n");
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fprintf(stderr, "-c <configfile>: use the provided configfile instead\n");
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exit(EXIT_FAILURE);
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}
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}
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LOG("i3 version " I3_VERSION " starting\n");
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/* Initialize the table data structures for each workspace */
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init_table();
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memset(&evenths, 0, sizeof(xcb_event_handlers_t));
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memset(&prophs, 0, sizeof(xcb_property_handlers_t));
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conn = global_conn = xcb_connect(NULL, &screens);
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if (xcb_connection_has_error(conn))
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die("Cannot open display\n");
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load_configuration(conn, override_configpath, false);
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/* Create the initial container on the first workspace. This used to
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* be part of init_table, but since it possibly requires an X
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* connection and a loaded configuration (default mode for new
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* containers may be stacking, which requires a new window to be
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* created), it had to be delayed. */
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expand_table_cols(TAILQ_FIRST(workspaces));
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expand_table_rows(TAILQ_FIRST(workspaces));
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/* Place requests for the atoms we need as soon as possible */
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#define REQUEST_ATOM(name) atom_cookies[name] = xcb_intern_atom(conn, 0, strlen(#name), #name);
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REQUEST_ATOM(_NET_SUPPORTED);
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REQUEST_ATOM(_NET_WM_STATE_FULLSCREEN);
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REQUEST_ATOM(_NET_SUPPORTING_WM_CHECK);
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REQUEST_ATOM(_NET_WM_NAME);
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REQUEST_ATOM(_NET_WM_STATE);
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REQUEST_ATOM(_NET_WM_WINDOW_TYPE);
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REQUEST_ATOM(_NET_WM_DESKTOP);
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REQUEST_ATOM(_NET_WM_WINDOW_TYPE_DOCK);
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REQUEST_ATOM(_NET_WM_WINDOW_TYPE_DIALOG);
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REQUEST_ATOM(_NET_WM_WINDOW_TYPE_UTILITY);
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REQUEST_ATOM(_NET_WM_WINDOW_TYPE_TOOLBAR);
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REQUEST_ATOM(_NET_WM_WINDOW_TYPE_SPLASH);
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REQUEST_ATOM(_NET_WM_STRUT_PARTIAL);
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REQUEST_ATOM(WM_PROTOCOLS);
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REQUEST_ATOM(WM_DELETE_WINDOW);
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REQUEST_ATOM(UTF8_STRING);
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REQUEST_ATOM(WM_STATE);
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REQUEST_ATOM(WM_CLIENT_LEADER);
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REQUEST_ATOM(_NET_CURRENT_DESKTOP);
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REQUEST_ATOM(_NET_ACTIVE_WINDOW);
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REQUEST_ATOM(_NET_WORKAREA);
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/* TODO: this has to be more beautiful somewhen */
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int major, minor, error;
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major = XkbMajorVersion;
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minor = XkbMinorVersion;
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int evBase, errBase;
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if ((xkbdpy = XkbOpenDisplay(getenv("DISPLAY"), &evBase, &errBase, &major, &minor, &error)) == NULL) {
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ELOG("ERROR: XkbOpenDisplay() failed, disabling XKB support\n");
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xkb_supported = false;
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}
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if (xkb_supported) {
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if (fcntl(ConnectionNumber(xkbdpy), F_SETFD, FD_CLOEXEC) == -1) {
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fprintf(stderr, "Could not set FD_CLOEXEC on xkbdpy\n");
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return 1;
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}
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int i1;
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if (!XkbQueryExtension(xkbdpy,&i1,&evBase,&errBase,&major,&minor)) {
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fprintf(stderr, "XKB not supported by X-server\n");
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return 1;
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}
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/* end of ugliness */
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if (!XkbSelectEvents(xkbdpy, XkbUseCoreKbd, XkbMapNotifyMask, XkbMapNotifyMask)) {
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fprintf(stderr, "Could not set XKB event mask\n");
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return 1;
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}
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}
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/* Initialize event loop using libev */
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struct ev_loop *loop = ev_default_loop(0);
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if (loop == NULL)
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die("Could not initialize libev. Bad LIBEV_FLAGS?\n");
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struct ev_io *xcb_watcher = scalloc(sizeof(struct ev_io));
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struct ev_io *xkb = scalloc(sizeof(struct ev_io));
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struct ev_check *xcb_check = scalloc(sizeof(struct ev_check));
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struct ev_prepare *xcb_prepare = scalloc(sizeof(struct ev_prepare));
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ev_io_init(xcb_watcher, xcb_got_event, xcb_get_file_descriptor(conn), EV_READ);
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ev_io_start(loop, xcb_watcher);
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if (xkb_supported) {
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ev_io_init(xkb, xkb_got_event, ConnectionNumber(xkbdpy), EV_READ);
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ev_io_start(loop, xkb);
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/* Flush the buffer so that libev can properly get new events */
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XFlush(xkbdpy);
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}
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ev_check_init(xcb_check, xcb_check_cb);
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ev_check_start(loop, xcb_check);
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ev_prepare_init(xcb_prepare, xcb_prepare_cb);
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ev_prepare_start(loop, xcb_prepare);
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/* Grab the server to delay any events until we enter the eventloop */
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xcb_grab_server(conn);
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xcb_event_handlers_init(conn, &evenths);
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/* DEBUG: Trap all events and print them */
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for (i = 2; i < 128; ++i)
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xcb_event_set_handler(&evenths, i, handle_event, 0);
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for (i = 0; i < 256; ++i)
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xcb_event_set_error_handler(&evenths, i, (xcb_generic_error_handler_t)handle_event, 0);
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/* Expose = an Application should redraw itself, in this case it’s our titlebars. */
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xcb_event_set_expose_handler(&evenths, handle_expose_event, NULL);
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/* Key presses/releases are pretty obvious, I think */
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xcb_event_set_key_press_handler(&evenths, handle_key_press, NULL);
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xcb_event_set_key_release_handler(&evenths, handle_key_release, NULL);
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/* Enter window = user moved his mouse over the window */
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xcb_event_set_enter_notify_handler(&evenths, handle_enter_notify, NULL);
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/* Button press = user pushed a mouse button over one of our windows */
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xcb_event_set_button_press_handler(&evenths, handle_button_press, NULL);
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/* Map notify = there is a new window */
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xcb_event_set_map_request_handler(&evenths, handle_map_request, &prophs);
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/* Unmap notify = window disappeared. When sent from a client, we don’t manage
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it any longer. Usually, the client destroys the window shortly afterwards. */
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xcb_event_set_unmap_notify_handler(&evenths, handle_unmap_notify_event, NULL);
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/* Configure notify = window’s configuration (geometry, stacking, …). We only need
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it to set up ignore the following enter_notify events */
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xcb_event_set_configure_notify_handler(&evenths, handle_configure_event, NULL);
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/* Configure request = window tried to change size on its own */
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xcb_event_set_configure_request_handler(&evenths, handle_configure_request, NULL);
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/* Motion notify = user moved his cursor (over the root window and may
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* cross virtual screen boundaries doing that) */
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xcb_event_set_motion_notify_handler(&evenths, handle_motion_notify, NULL);
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/* Mapping notify = keyboard mapping changed (Xmodmap), re-grab bindings */
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xcb_event_set_mapping_notify_handler(&evenths, handle_mapping_notify, NULL);
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/* Client message are sent to the root window. The only interesting client message
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for us is _NET_WM_STATE, we honour _NET_WM_STATE_FULLSCREEN */
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xcb_event_set_client_message_handler(&evenths, handle_client_message, NULL);
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/* Initialize the property handlers */
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xcb_property_handlers_init(&prophs, &evenths);
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/* Watch size hints (to obey correct aspect ratio) */
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xcb_property_set_handler(&prophs, WM_NORMAL_HINTS, UINT_MAX, handle_normal_hints, NULL);
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/* Get the root window and set the event mask */
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xcb_screen_t *root_screen = xcb_aux_get_screen(conn, screens);
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root = root_screen->root;
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root_depth = root_screen->root_depth;
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uint32_t mask = XCB_CW_EVENT_MASK;
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uint32_t values[] = { XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT |
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XCB_EVENT_MASK_STRUCTURE_NOTIFY | /* when the user adds a screen (e.g. video
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projector), the root window gets a
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ConfigureNotify */
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XCB_EVENT_MASK_POINTER_MOTION |
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XCB_EVENT_MASK_PROPERTY_CHANGE |
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XCB_EVENT_MASK_ENTER_WINDOW };
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xcb_void_cookie_t cookie;
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cookie = xcb_change_window_attributes_checked(conn, root, mask, values);
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check_error(conn, cookie, "Another window manager seems to be running");
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/* Setup NetWM atoms */
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#define GET_ATOM(name) { \
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xcb_intern_atom_reply_t *reply = xcb_intern_atom_reply(conn, atom_cookies[name], NULL); \
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if (!reply) { \
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ELOG("Could not get atom " #name "\n"); \
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exit(-1); \
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} \
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atoms[name] = reply->atom; \
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free(reply); \
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}
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GET_ATOM(_NET_SUPPORTED);
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GET_ATOM(_NET_WM_STATE_FULLSCREEN);
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GET_ATOM(_NET_SUPPORTING_WM_CHECK);
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GET_ATOM(_NET_WM_NAME);
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GET_ATOM(_NET_WM_STATE);
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GET_ATOM(_NET_WM_WINDOW_TYPE);
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GET_ATOM(_NET_WM_DESKTOP);
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GET_ATOM(_NET_WM_WINDOW_TYPE_DOCK);
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GET_ATOM(_NET_WM_WINDOW_TYPE_DIALOG);
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GET_ATOM(_NET_WM_WINDOW_TYPE_UTILITY);
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GET_ATOM(_NET_WM_WINDOW_TYPE_TOOLBAR);
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GET_ATOM(_NET_WM_WINDOW_TYPE_SPLASH);
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GET_ATOM(_NET_WM_STRUT_PARTIAL);
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GET_ATOM(WM_PROTOCOLS);
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GET_ATOM(WM_DELETE_WINDOW);
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GET_ATOM(UTF8_STRING);
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GET_ATOM(WM_STATE);
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GET_ATOM(WM_CLIENT_LEADER);
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GET_ATOM(_NET_CURRENT_DESKTOP);
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GET_ATOM(_NET_ACTIVE_WINDOW);
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GET_ATOM(_NET_WORKAREA);
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xcb_property_set_handler(&prophs, atoms[_NET_WM_WINDOW_TYPE], UINT_MAX, handle_window_type, NULL);
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/* TODO: In order to comply with EWMH, we have to watch _NET_WM_STRUT_PARTIAL */
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/* Watch _NET_WM_NAME (= title of the window in UTF-8) property */
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xcb_property_set_handler(&prophs, atoms[_NET_WM_NAME], 128, handle_windowname_change, NULL);
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/* Watch WM_TRANSIENT_FOR property (to which client this popup window belongs) */
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xcb_property_set_handler(&prophs, WM_TRANSIENT_FOR, UINT_MAX, handle_transient_for, NULL);
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/* Watch WM_NAME (= title of the window in compound text) property for legacy applications */
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xcb_watch_wm_name(&prophs, 128, handle_windowname_change_legacy, NULL);
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/* Watch WM_CLASS (= class of the window) */
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xcb_property_set_handler(&prophs, WM_CLASS, 128, handle_windowclass_change, NULL);
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/* Watch WM_CLIENT_LEADER (= logical parent window for toolbars etc.) */
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xcb_property_set_handler(&prophs, atoms[WM_CLIENT_LEADER], UINT_MAX, handle_clientleader_change, NULL);
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/* Watch WM_HINTS (contains the urgent property) */
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xcb_property_set_handler(&prophs, WM_HINTS, UINT_MAX, handle_hints, NULL);
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/* Set up the atoms we support */
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check_error(conn, xcb_change_property_checked(conn, XCB_PROP_MODE_REPLACE, root, atoms[_NET_SUPPORTED],
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ATOM, 32, 7, atoms), "Could not set _NET_SUPPORTED");
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/* Set up the window manager’s name */
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xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, atoms[_NET_SUPPORTING_WM_CHECK], WINDOW, 32, 1, &root);
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xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, atoms[_NET_WM_NAME], atoms[UTF8_STRING], 8, strlen("i3"), "i3");
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keysyms = xcb_key_symbols_alloc(conn);
|
||
|
||
xcb_get_numlock_mask(conn);
|
||
|
||
grab_all_keys(conn);
|
||
|
||
/* Autostarting exec-lines */
|
||
struct Autostart *exec;
|
||
if (autostart) {
|
||
TAILQ_FOREACH(exec, &autostarts, autostarts) {
|
||
LOG("auto-starting %s\n", exec->command);
|
||
start_application(exec->command);
|
||
}
|
||
}
|
||
|
||
/* check for Xinerama */
|
||
DLOG("Checking for Xinerama...\n");
|
||
initialize_xinerama(conn);
|
||
|
||
xcb_flush(conn);
|
||
|
||
/* Get pointer position to see on which screen we’re starting */
|
||
xcb_query_pointer_reply_t *reply;
|
||
if ((reply = xcb_query_pointer_reply(conn, xcb_query_pointer(conn, root), NULL)) == NULL) {
|
||
ELOG("Could not get pointer position\n");
|
||
return 1;
|
||
}
|
||
|
||
i3Screen *screen = get_screen_containing(reply->root_x, reply->root_y);
|
||
if (screen == NULL) {
|
||
ELOG("ERROR: No screen at %d x %d, starting on the first screen\n",
|
||
reply->root_x, reply->root_y);
|
||
screen = TAILQ_FIRST(virtual_screens);
|
||
}
|
||
|
||
DLOG("Starting on %d\n", screen->current_workspace);
|
||
c_ws = screen->current_workspace;
|
||
|
||
manage_existing_windows(conn, &prophs, root);
|
||
|
||
/* Create the UNIX domain socket for IPC */
|
||
if (config.ipc_socket_path != NULL) {
|
||
int ipc_socket = ipc_create_socket(config.ipc_socket_path);
|
||
if (ipc_socket == -1) {
|
||
ELOG("Could not create the IPC socket, IPC disabled\n");
|
||
} else {
|
||
struct ev_io *ipc_io = scalloc(sizeof(struct ev_io));
|
||
ev_io_init(ipc_io, ipc_new_client, ipc_socket, EV_READ);
|
||
ev_io_start(loop, ipc_io);
|
||
}
|
||
}
|
||
|
||
/* Handle the events which arrived until now */
|
||
xcb_check_cb(NULL, NULL, 0);
|
||
|
||
/* Ungrab the server to receive events and enter libev’s eventloop */
|
||
xcb_ungrab_server(conn);
|
||
ev_loop(loop, 0);
|
||
|
||
/* not reached */
|
||
return 0;
|
||
}
|