gri3-wm/src/main.c

445 lines
15 KiB
C
Raw Normal View History

/*
* vim:ts=4:sw=4:expandtab
*/
#include <ev.h>
2010-11-27 00:26:51 +01:00
#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_window_t root;
uint8_t root_depth;
xcb_key_symbols_t *keysyms;
2010-11-27 00:26:51 +01:00
/* 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 assignments */
struct assignments_head assignments = TAILQ_HEAD_INITIALIZER(assignments);
2010-11-27 00:26:51 +01:00
/* 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) {
ELOG("X11 Error received! sequence %x\n", event->sequence);
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[] = {
2010-04-13 16:48:42 +02:00
{"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},
2010-04-13 16:48:42 +02:00
{"force-xinerama", no_argument, 0, 0},
{"disable-signalhandler", no_argument, 0, 0},
2010-04-13 16:48:42 +02:00
{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);
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");
xcb_screen_t *root_screen = xcb_aux_get_screen(conn, screens);
root = root_screen->root;
root_depth = root_screen->root_depth;
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)
config.ipc_socket_path = getenv("I3SOCK");
/* Fall back to a file name in /tmp/ based on the PID */
if (config.ipc_socket_path == NULL)
config.ipc_socket_path = get_process_filename("i3-ipc-socket");
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");
/* 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
2010-11-27 00:26:51 +01:00
/* 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();*/
}
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, 7, supported_atoms);
/* Set up the window managers 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);
2011-01-05 00:16:10 +01:00
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);
if (delete_layout_path)
unlink(layout_path);
free(layout_path);
}
if (needs_tree_init)
tree_init();
if (force_xinerama) {
xinerama_init();
} else {
DLOG("Checking for XRandR...\n");
randr_init(&randr_base);
}
tree_render();
struct ev_loop *loop = ev_loop_new(0);
if (loop == NULL)
die("Could not initialize libev. Bad LIBEV_FLAGS?\n");
/* 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 {
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);
}
/* 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(loop, xcb_watcher);
if (xkb_supported) {
ev_io_init(xkb, xkb_got_event, ConnectionNumber(xkbdpy), EV_READ);
ev_io_start(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(loop, xcb_check);
ev_prepare_init(xcb_prepare, xcb_prepare_cb);
ev_prepare_start(loop, xcb_prepare);
xcb_flush(conn);
manage_existing_windows(root);
if (!disable_signalhandler)
setup_signal_handler();
2010-12-30 21:09:32 +01:00
/* Ignore SIGPIPE to survive errors when an IPC client disconnects
* while we are sending him a message */
signal(SIGPIPE, SIG_IGN);
2010-11-23 00:40:05 +01:00
/* Autostarting exec-lines */
if (autostart) {
struct Autostart *exec;
TAILQ_FOREACH(exec, &autostarts, autostarts) {
LOG("auto-starting %s\n", exec->command);
start_application(exec->command);
}
}
ev_loop(loop, 0);
}