500 lines
17 KiB
C
500 lines
17 KiB
C
/*
|
||
* vim:ts=4:sw=4:expandtab
|
||
*/
|
||
#include <ev.h>
|
||
#include <fcntl.h>
|
||
#include <limits.h>
|
||
#include "all.h"
|
||
|
||
static int xkb_event_base;
|
||
|
||
int xkb_current_group;
|
||
|
||
extern Con *focused;
|
||
|
||
char **start_argv;
|
||
|
||
xcb_connection_t *conn;
|
||
|
||
xcb_screen_t *root_screen;
|
||
xcb_window_t root;
|
||
uint8_t root_depth;
|
||
|
||
struct ev_loop *main_loop;
|
||
|
||
xcb_key_symbols_t *keysyms;
|
||
|
||
/* Those are our connections to X11 for use with libXcursor and XKB */
|
||
Display *xlibdpy, *xkbdpy;
|
||
|
||
/* The list of key bindings */
|
||
struct bindings_head *bindings;
|
||
|
||
/* The list of exec-lines */
|
||
struct autostarts_head autostarts = TAILQ_HEAD_INITIALIZER(autostarts);
|
||
|
||
/* The list of exec_always lines */
|
||
struct autostarts_always_head autostarts_always = TAILQ_HEAD_INITIALIZER(autostarts_always);
|
||
|
||
/* The list of assignments */
|
||
struct assignments_head assignments = TAILQ_HEAD_INITIALIZER(assignments);
|
||
|
||
/* The list of workspace assignments (which workspace should end up on which
|
||
* output) */
|
||
struct ws_assignments_head ws_assignments = TAILQ_HEAD_INITIALIZER(ws_assignments);
|
||
|
||
/* We hope that those are supported and set them to true */
|
||
bool xcursor_supported = true;
|
||
bool xkb_supported = true;
|
||
|
||
/*
|
||
* This callback is only a dummy, see xcb_prepare_cb and xcb_check_cb.
|
||
* See also man libev(3): "ev_prepare" and "ev_check" - customise your event loop
|
||
*
|
||
*/
|
||
static void xcb_got_event(EV_P_ struct ev_io *w, int revents) {
|
||
/* empty, because xcb_prepare_cb and xcb_check_cb are used */
|
||
}
|
||
|
||
/*
|
||
* Flush before blocking (and waiting for new events)
|
||
*
|
||
*/
|
||
static void xcb_prepare_cb(EV_P_ ev_prepare *w, int revents) {
|
||
xcb_flush(conn);
|
||
}
|
||
|
||
/*
|
||
* Instead of polling the X connection socket we leave this to
|
||
* xcb_poll_for_event() which knows better than we can ever know.
|
||
*
|
||
*/
|
||
static void xcb_check_cb(EV_P_ ev_check *w, int revents) {
|
||
xcb_generic_event_t *event;
|
||
|
||
while ((event = xcb_poll_for_event(conn)) != NULL) {
|
||
if (event->response_type == 0) {
|
||
if (event_is_ignored(event->sequence, 0))
|
||
DLOG("Expected X11 Error received for sequence %x\n", event->sequence);
|
||
else {
|
||
xcb_generic_error_t *error = (xcb_generic_error_t*)event;
|
||
ELOG("X11 Error received! sequence 0x%x, error_code = %d\n",
|
||
error->sequence, error->error_code);
|
||
}
|
||
free(event);
|
||
continue;
|
||
}
|
||
|
||
/* Strip off the highest bit (set if the event is generated) */
|
||
int type = (event->response_type & 0x7F);
|
||
|
||
handle_event(type, event);
|
||
|
||
free(event);
|
||
}
|
||
}
|
||
|
||
|
||
/*
|
||
* When using xmodmap to change the keyboard mapping, this event
|
||
* is only sent via XKB. Therefore, we need this special handler.
|
||
*
|
||
*/
|
||
static void xkb_got_event(EV_P_ struct ev_io *w, int revents) {
|
||
DLOG("Handling XKB event\n");
|
||
XkbEvent ev;
|
||
|
||
/* When using xmodmap, every change (!) gets an own event.
|
||
* Therefore, we just read all events and only handle the
|
||
* mapping_notify once. */
|
||
bool mapping_changed = false;
|
||
while (XPending(xkbdpy)) {
|
||
XNextEvent(xkbdpy, (XEvent*)&ev);
|
||
/* While we should never receive a non-XKB event,
|
||
* better do sanity checking */
|
||
if (ev.type != xkb_event_base)
|
||
continue;
|
||
|
||
if (ev.any.xkb_type == XkbMapNotify) {
|
||
mapping_changed = true;
|
||
continue;
|
||
}
|
||
|
||
if (ev.any.xkb_type != XkbStateNotify) {
|
||
ELOG("Unknown XKB event received (type %d)\n", ev.any.xkb_type);
|
||
continue;
|
||
}
|
||
|
||
/* See The XKB Extension: Library Specification, section 14.1 */
|
||
/* We check if the current group (each group contains
|
||
* two levels) has been changed. Mode_switch activates
|
||
* group XkbGroup2Index */
|
||
if (xkb_current_group == ev.state.group)
|
||
continue;
|
||
|
||
xkb_current_group = ev.state.group;
|
||
|
||
if (ev.state.group == XkbGroup2Index) {
|
||
DLOG("Mode_switch enabled\n");
|
||
grab_all_keys(conn, true);
|
||
}
|
||
|
||
if (ev.state.group == XkbGroup1Index) {
|
||
DLOG("Mode_switch disabled\n");
|
||
ungrab_all_keys(conn);
|
||
grab_all_keys(conn, false);
|
||
}
|
||
}
|
||
|
||
if (!mapping_changed)
|
||
return;
|
||
|
||
DLOG("Keyboard mapping changed, updating keybindings\n");
|
||
xcb_key_symbols_free(keysyms);
|
||
keysyms = xcb_key_symbols_alloc(conn);
|
||
|
||
xcb_get_numlock_mask(conn);
|
||
|
||
ungrab_all_keys(conn);
|
||
DLOG("Re-grabbing...\n");
|
||
translate_keysyms();
|
||
grab_all_keys(conn, (xkb_current_group == XkbGroup2Index));
|
||
DLOG("Done\n");
|
||
}
|
||
|
||
int main(int argc, char *argv[]) {
|
||
//parse_cmd("[ foo ] attach, attach ; focus");
|
||
int screens;
|
||
char *override_configpath = NULL;
|
||
bool autostart = true;
|
||
char *layout_path = NULL;
|
||
bool delete_layout_path = false;
|
||
bool only_check_config = false;
|
||
bool force_xinerama = false;
|
||
bool disable_signalhandler = false;
|
||
static struct option long_options[] = {
|
||
{"no-autostart", no_argument, 0, 'a'},
|
||
{"config", required_argument, 0, 'c'},
|
||
{"version", no_argument, 0, 'v'},
|
||
{"help", no_argument, 0, 'h'},
|
||
{"layout", required_argument, 0, 'L'},
|
||
{"restart", required_argument, 0, 0},
|
||
{"force-xinerama", no_argument, 0, 0},
|
||
{"disable-signalhandler", no_argument, 0, 0},
|
||
{0, 0, 0, 0}
|
||
};
|
||
int option_index = 0, opt;
|
||
|
||
setlocale(LC_ALL, "");
|
||
|
||
/* Disable output buffering to make redirects in .xsession actually useful for debugging */
|
||
if (!isatty(fileno(stdout)))
|
||
setbuf(stdout, NULL);
|
||
|
||
init_logging();
|
||
|
||
start_argv = argv;
|
||
|
||
while ((opt = getopt_long(argc, argv, "c:CvaL:hld:V", long_options, &option_index)) != -1) {
|
||
switch (opt) {
|
||
case 'a':
|
||
LOG("Autostart disabled using -a\n");
|
||
autostart = false;
|
||
break;
|
||
case 'L':
|
||
FREE(layout_path);
|
||
layout_path = sstrdup(optarg);
|
||
delete_layout_path = false;
|
||
break;
|
||
case 'c':
|
||
FREE(override_configpath);
|
||
override_configpath = sstrdup(optarg);
|
||
break;
|
||
case 'C':
|
||
LOG("Checking configuration file only (-C)\n");
|
||
only_check_config = true;
|
||
break;
|
||
case 'v':
|
||
printf("i3 version " I3_VERSION " © 2009-2011 Michael Stapelberg and contributors\n");
|
||
exit(EXIT_SUCCESS);
|
||
case 'V':
|
||
set_verbosity(true);
|
||
break;
|
||
case 'd':
|
||
LOG("Enabling debug loglevel %s\n", optarg);
|
||
add_loglevel(optarg);
|
||
break;
|
||
case 'l':
|
||
/* DEPRECATED, ignored for the next 3 versions (3.e, 3.f, 3.g) */
|
||
break;
|
||
case 0:
|
||
if (strcmp(long_options[option_index].name, "force-xinerama") == 0) {
|
||
force_xinerama = true;
|
||
ELOG("Using Xinerama instead of RandR. This option should be "
|
||
"avoided at all cost because it does not refresh the list "
|
||
"of screens, so you cannot configure displays at runtime. "
|
||
"Please check if your driver really does not support RandR "
|
||
"and disable this option as soon as you can.\n");
|
||
break;
|
||
} else if (strcmp(long_options[option_index].name, "disable-signalhandler") == 0) {
|
||
disable_signalhandler = true;
|
||
break;
|
||
} else if (strcmp(long_options[option_index].name, "restart") == 0) {
|
||
FREE(layout_path);
|
||
layout_path = sstrdup(optarg);
|
||
delete_layout_path = true;
|
||
break;
|
||
}
|
||
/* fall-through */
|
||
default:
|
||
fprintf(stderr, "Usage: %s [-c configfile] [-d loglevel] [-a] [-v] [-V] [-C]\n", argv[0]);
|
||
fprintf(stderr, "\n");
|
||
fprintf(stderr, "-a: disable autostart\n");
|
||
fprintf(stderr, "-L <layoutfile>: load the layout from <layoutfile>\n");
|
||
fprintf(stderr, "-v: display version and exit\n");
|
||
fprintf(stderr, "-V: enable verbose mode\n");
|
||
fprintf(stderr, "-d <loglevel>: enable debug loglevel <loglevel>\n");
|
||
fprintf(stderr, "-c <configfile>: use the provided configfile instead\n");
|
||
fprintf(stderr, "-C: check configuration file and exit\n");
|
||
fprintf(stderr, "--force-xinerama: Use Xinerama instead of RandR. This "
|
||
"option should only be used if you are stuck with the "
|
||
"nvidia closed source driver which does not support RandR.\n");
|
||
exit(EXIT_FAILURE);
|
||
}
|
||
}
|
||
|
||
LOG("i3 (tree) version " I3_VERSION " starting\n");
|
||
|
||
conn = xcb_connect(NULL, &screens);
|
||
if (xcb_connection_has_error(conn))
|
||
errx(EXIT_FAILURE, "Cannot open display\n");
|
||
|
||
/* Initialize the libev event loop. This needs to be done before loading
|
||
* the config file because the parser will install an ev_child watcher
|
||
* for the nagbar when config errors are found. */
|
||
main_loop = EV_DEFAULT;
|
||
if (main_loop == NULL)
|
||
die("Could not initialize libev. Bad LIBEV_FLAGS?\n");
|
||
|
||
root_screen = xcb_aux_get_screen(conn, screens);
|
||
root = root_screen->root;
|
||
root_depth = root_screen->root_depth;
|
||
xcb_get_geometry_cookie_t gcookie = xcb_get_geometry(conn, root);
|
||
|
||
load_configuration(conn, override_configpath, false);
|
||
if (only_check_config) {
|
||
LOG("Done checking configuration file. Exiting.\n");
|
||
exit(0);
|
||
}
|
||
|
||
if (config.ipc_socket_path == NULL) {
|
||
/* Fall back to a file name in /tmp/ based on the PID */
|
||
if ((config.ipc_socket_path = getenv("I3SOCK")) == NULL)
|
||
config.ipc_socket_path = get_process_filename("ipc-socket");
|
||
else
|
||
config.ipc_socket_path = sstrdup(config.ipc_socket_path);
|
||
}
|
||
|
||
uint32_t mask = XCB_CW_EVENT_MASK;
|
||
uint32_t values[] = { XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT |
|
||
XCB_EVENT_MASK_STRUCTURE_NOTIFY | /* when the user adds a screen (e.g. video
|
||
projector), the root window gets a
|
||
ConfigureNotify */
|
||
XCB_EVENT_MASK_POINTER_MOTION |
|
||
XCB_EVENT_MASK_PROPERTY_CHANGE |
|
||
XCB_EVENT_MASK_ENTER_WINDOW };
|
||
xcb_void_cookie_t cookie;
|
||
cookie = xcb_change_window_attributes_checked(conn, root, mask, values);
|
||
check_error(conn, cookie, "Another window manager seems to be running");
|
||
|
||
xcb_get_geometry_reply_t *greply = xcb_get_geometry_reply(conn, gcookie, NULL);
|
||
if (greply == NULL) {
|
||
ELOG("Could not get geometry of the root window, exiting\n");
|
||
return 1;
|
||
}
|
||
DLOG("root geometry reply: (%d, %d) %d x %d\n", greply->x, greply->y, greply->width, greply->height);
|
||
|
||
/* Place requests for the atoms we need as soon as possible */
|
||
#define xmacro(atom) \
|
||
xcb_intern_atom_cookie_t atom ## _cookie = xcb_intern_atom(conn, 0, strlen(#atom), #atom);
|
||
#include "atoms.xmacro"
|
||
#undef xmacro
|
||
|
||
/* Initialize the Xlib connection */
|
||
xlibdpy = xkbdpy = XOpenDisplay(NULL);
|
||
|
||
/* Try to load the X cursors and initialize the XKB extension */
|
||
if (xlibdpy == NULL) {
|
||
ELOG("ERROR: XOpenDisplay() failed, disabling libXcursor/XKB support\n");
|
||
xcursor_supported = false;
|
||
xkb_supported = false;
|
||
} else if (fcntl(ConnectionNumber(xlibdpy), F_SETFD, FD_CLOEXEC) == -1) {
|
||
ELOG("Could not set FD_CLOEXEC on xkbdpy\n");
|
||
return 1;
|
||
} else {
|
||
xcursor_load_cursors();
|
||
/*init_xkb();*/
|
||
}
|
||
|
||
/* Set a cursor for the root window (otherwise the root window will show no
|
||
cursor until the first client is launched). */
|
||
if (xcursor_supported) {
|
||
xcursor_set_root_cursor();
|
||
} else {
|
||
xcb_cursor_t cursor_id = xcb_generate_id(conn);
|
||
i3Font cursor_font = load_font("cursor", false);
|
||
int xcb_cursor = xcursor_get_xcb_cursor(XCURSOR_CURSOR_POINTER);
|
||
xcb_create_glyph_cursor(conn, cursor_id, cursor_font.id, cursor_font.id,
|
||
xcb_cursor, xcb_cursor + 1, 0, 0, 0, 65535, 65535, 65535);
|
||
xcb_change_window_attributes(conn, root, XCB_CW_CURSOR, &cursor_id);
|
||
xcb_free_cursor(conn, cursor_id);
|
||
}
|
||
|
||
if (xkb_supported) {
|
||
int errBase,
|
||
major = XkbMajorVersion,
|
||
minor = XkbMinorVersion;
|
||
|
||
if (fcntl(ConnectionNumber(xkbdpy), F_SETFD, FD_CLOEXEC) == -1) {
|
||
fprintf(stderr, "Could not set FD_CLOEXEC on xkbdpy\n");
|
||
return 1;
|
||
}
|
||
|
||
int i1;
|
||
if (!XkbQueryExtension(xkbdpy,&i1,&xkb_event_base,&errBase,&major,&minor)) {
|
||
fprintf(stderr, "XKB not supported by X-server\n");
|
||
return 1;
|
||
}
|
||
/* end of ugliness */
|
||
|
||
if (!XkbSelectEvents(xkbdpy, XkbUseCoreKbd,
|
||
XkbMapNotifyMask | XkbStateNotifyMask,
|
||
XkbMapNotifyMask | XkbStateNotifyMask)) {
|
||
fprintf(stderr, "Could not set XKB event mask\n");
|
||
return 1;
|
||
}
|
||
}
|
||
|
||
/* Setup NetWM atoms */
|
||
#define xmacro(name) \
|
||
do { \
|
||
xcb_intern_atom_reply_t *reply = xcb_intern_atom_reply(conn, name ## _cookie, NULL); \
|
||
if (!reply) { \
|
||
ELOG("Could not get atom " #name "\n"); \
|
||
exit(-1); \
|
||
} \
|
||
A_ ## name = reply->atom; \
|
||
free(reply); \
|
||
} while (0);
|
||
#include "atoms.xmacro"
|
||
#undef xmacro
|
||
|
||
property_handlers_init();
|
||
|
||
/* Set up the atoms we support */
|
||
xcb_atom_t supported_atoms[] = {
|
||
#define xmacro(atom) A_ ## atom,
|
||
#include "atoms.xmacro"
|
||
#undef xmacro
|
||
};
|
||
xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A__NET_SUPPORTED, A_ATOM, 32, 15, supported_atoms);
|
||
/* Set up the window manager’s name */
|
||
xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A__NET_SUPPORTING_WM_CHECK, A_WINDOW, 32, 1, &root);
|
||
xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A__NET_WM_NAME, A_UTF8_STRING, 8, strlen("i3"), "i3");
|
||
|
||
keysyms = xcb_key_symbols_alloc(conn);
|
||
|
||
xcb_get_numlock_mask(conn);
|
||
|
||
translate_keysyms();
|
||
grab_all_keys(conn, false);
|
||
|
||
bool needs_tree_init = true;
|
||
if (layout_path) {
|
||
LOG("Trying to restore the layout from %s...", layout_path);
|
||
needs_tree_init = !tree_restore(layout_path, greply);
|
||
if (delete_layout_path)
|
||
unlink(layout_path);
|
||
free(layout_path);
|
||
}
|
||
if (needs_tree_init)
|
||
tree_init(greply);
|
||
|
||
free(greply);
|
||
|
||
if (force_xinerama) {
|
||
xinerama_init();
|
||
} else {
|
||
DLOG("Checking for XRandR...\n");
|
||
randr_init(&randr_base);
|
||
}
|
||
|
||
tree_render();
|
||
|
||
/* Create the UNIX domain socket for IPC */
|
||
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 {
|
||
free(config.ipc_socket_path);
|
||
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(main_loop, ipc_io);
|
||
}
|
||
|
||
/* Set up i3 specific atoms like I3_SOCKET_PATH and I3_CONFIG_PATH */
|
||
x_set_i3_atoms();
|
||
|
||
struct ev_io *xcb_watcher = scalloc(sizeof(struct ev_io));
|
||
struct ev_io *xkb = scalloc(sizeof(struct ev_io));
|
||
struct ev_check *xcb_check = scalloc(sizeof(struct ev_check));
|
||
struct ev_prepare *xcb_prepare = scalloc(sizeof(struct ev_prepare));
|
||
|
||
ev_io_init(xcb_watcher, xcb_got_event, xcb_get_file_descriptor(conn), EV_READ);
|
||
ev_io_start(main_loop, xcb_watcher);
|
||
|
||
|
||
if (xkb_supported) {
|
||
ev_io_init(xkb, xkb_got_event, ConnectionNumber(xkbdpy), EV_READ);
|
||
ev_io_start(main_loop, xkb);
|
||
|
||
/* Flush the buffer so that libev can properly get new events */
|
||
XFlush(xkbdpy);
|
||
}
|
||
|
||
ev_check_init(xcb_check, xcb_check_cb);
|
||
ev_check_start(main_loop, xcb_check);
|
||
|
||
ev_prepare_init(xcb_prepare, xcb_prepare_cb);
|
||
ev_prepare_start(main_loop, xcb_prepare);
|
||
|
||
xcb_flush(conn);
|
||
|
||
manage_existing_windows(root);
|
||
|
||
if (!disable_signalhandler)
|
||
setup_signal_handler();
|
||
|
||
/* Ignore SIGPIPE to survive errors when an IPC client disconnects
|
||
* while we are sending him a message */
|
||
signal(SIGPIPE, SIG_IGN);
|
||
|
||
/* Autostarting exec-lines */
|
||
if (autostart) {
|
||
struct Autostart *exec;
|
||
TAILQ_FOREACH(exec, &autostarts, autostarts) {
|
||
LOG("auto-starting %s\n", exec->command);
|
||
start_application(exec->command);
|
||
}
|
||
}
|
||
|
||
/* Autostarting exec_always-lines */
|
||
struct Autostart *exec_always;
|
||
TAILQ_FOREACH(exec_always, &autostarts_always, autostarts_always) {
|
||
LOG("auto-starting (always!) %s\n", exec_always->command);
|
||
start_application(exec_always->command);
|
||
}
|
||
|
||
ev_loop(main_loop, 0);
|
||
}
|