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bspwm.c
361 lines (313 loc) · 11.9 KB
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bspwm.c
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#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <signal.h>
#include <fcntl.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <sys/select.h>
#include <xcb/xcb.h>
#include <xcb/xcb_event.h>
#include <xcb/xcb_ewmh.h>
#include <xcb/randr.h>
#include "types.h"
#include "settings.h"
#include "messages.h"
#include "rules.h"
#include "events.h"
#include "common.h"
#include "helpers.h"
#include "window.h"
#include "bspwm.h"
#include "tree.h"
#include "ewmh.h"
int main(int argc, char *argv[])
{
fd_set descriptors;
char socket_path[MAXLEN];
char *fifo_path = NULL;
config_path[0] = '\0';
status_prefix = NULL;
int sock_fd, ret_fd, dpy_fd, sel, n;
struct sockaddr_un sock_address;
size_t rsp_len = 0;
char msg[BUFSIZ] = {0};
char rsp[BUFSIZ] = {0};
xcb_generic_event_t *event;
char opt;
while ((opt = getopt(argc, argv, "hvc:s:p:")) != -1) {
switch (opt) {
case 'h':
printf("bspwm [-h|-v|-c CONFIG_PATH|-s PANEL_FIFO|-p PANEL_PREFIX]\n");
exit(EXIT_SUCCESS);
break;
case 'v':
printf("%s\n", VERSION);
exit(EXIT_SUCCESS);
break;
case 'c':
strncpy(config_path, optarg, sizeof(config_path));
break;
case 's':
fifo_path = optarg;
break;
case 'p':
status_prefix = optarg;
break;
}
}
if (config_path[0] == '\0') {
char *config_home = getenv(CONFIG_HOME_ENV);
if (config_home != NULL)
snprintf(config_path, sizeof(config_path), "%s/%s/%s", config_home, WM_NAME, CONFIG_NAME);
else
snprintf(config_path, sizeof(config_path), "%s/%s/%s/%s", getenv("HOME"), ".config", WM_NAME, CONFIG_NAME);
}
running = true;
dpy = xcb_connect(NULL, &default_screen);
if (xcb_connection_has_error(dpy))
err("Can't open the default display.\n");
setup();
dpy_fd = xcb_get_file_descriptor(dpy);
char *sp = getenv(SOCKET_ENV_VAR);
strncpy(socket_path, (sp == NULL ? DEFAULT_SOCKET_PATH : sp), sizeof(socket_path));
sock_address.sun_family = AF_UNIX;
strncpy(sock_address.sun_path, socket_path, sizeof(sock_address.sun_path));
unlink(socket_path);
sock_fd = socket(AF_UNIX, SOCK_STREAM, 0);
if (sock_fd == -1)
err("Couldn't create the socket.\n");
if (bind(sock_fd, (struct sockaddr *) &sock_address, sizeof(sock_address)) == -1)
err("Couldn't bind a name to the socket.\n");
if (listen(sock_fd, SOMAXCONN) == -1)
err("Couldn't listen to the socket.\n");
sel = MAX(sock_fd, dpy_fd) + 1;
if (fifo_path != NULL) {
int fifo_fd = open(fifo_path, O_RDWR | O_NONBLOCK);
if (fifo_fd != -1)
status_fifo = fdopen(fifo_fd, "w");
else
warn("Couldn't open status fifo.\n");
}
load_settings();
run_config();
ewmh_update_wm_name();
while (running) {
xcb_flush(dpy);
FD_ZERO(&descriptors);
FD_SET(sock_fd, &descriptors);
FD_SET(dpy_fd, &descriptors);
if (select(sel, &descriptors, NULL, NULL, NULL) > 0) {
if (FD_ISSET(sock_fd, &descriptors)) {
ret_fd = accept(sock_fd, NULL, 0);
if (ret_fd > 0 && (n = recv(ret_fd, msg, sizeof(msg), 0)) > 0) {
msg[n] = '\0';
if (handle_message(msg, n, rsp)) {
rsp_len = strlen(rsp);
if (rsp[rsp_len - 1] == '\n')
rsp[--rsp_len] = '\0';
} else {
rsp[0] = MESSAGE_FAILURE;
rsp_len = 1;
}
send(ret_fd, rsp, rsp_len, 0);
close(ret_fd);
rsp[0] = '\0';
}
}
if (FD_ISSET(dpy_fd, &descriptors)) {
while ((event = xcb_poll_for_event(dpy)) != NULL) {
handle_event(event);
free(event);
}
}
}
if (xcb_connection_has_error(dpy))
err("The server has closed the connection.\n");
}
cleanup();
close(sock_fd);
if (status_fifo != NULL)
fclose(status_fifo);
xcb_ewmh_connection_wipe(ewmh);
xcb_destroy_window(dpy, motion_recorder);
free(ewmh);
xcb_flush(dpy);
xcb_disconnect(dpy);
return exit_status;
}
void init(void)
{
num_monitors = num_desktops = num_clients = 0;
monitor_uid = desktop_uid = rule_uid = 0;
mon = last_mon = mon_head = mon_tail = NULL;
rule_head = rule_tail = NULL;
status_fifo = NULL;
last_motion_time = last_motion_x = last_motion_y = 0;
randr_base = 0;
visible = auto_raise = true;
exit_status = 0;
}
void setup(void)
{
init();
ewmh_init();
screen = xcb_setup_roots_iterator(xcb_get_setup(dpy)).data;
if (screen == NULL)
err("Can't acquire the default screen.\n");
root = screen->root;
register_events();
screen_width = screen->width_in_pixels;
screen_height = screen->height_in_pixels;
root_depth = screen->root_depth;
uint32_t mask = XCB_CW_EVENT_MASK;
uint32_t values[] = {XCB_EVENT_MASK_POINTER_MOTION};
motion_recorder = xcb_generate_id(dpy);
xcb_create_window(dpy, XCB_COPY_FROM_PARENT, motion_recorder, root, 0, 0, screen_width, screen_height, 0, XCB_WINDOW_CLASS_INPUT_ONLY, XCB_COPY_FROM_PARENT, mask, values);
xcb_atom_t net_atoms[] = {ewmh->_NET_SUPPORTED,
ewmh->_NET_SUPPORTING_WM_CHECK,
ewmh->_NET_DESKTOP_NAMES,
ewmh->_NET_NUMBER_OF_DESKTOPS,
ewmh->_NET_CURRENT_DESKTOP,
ewmh->_NET_CLIENT_LIST,
ewmh->_NET_ACTIVE_WINDOW,
ewmh->_NET_WM_DESKTOP,
ewmh->_NET_WM_STATE,
ewmh->_NET_WM_STATE_FULLSCREEN,
ewmh->_NET_WM_STATE_DEMANDS_ATTENTION,
ewmh->_NET_WM_WINDOW_TYPE,
ewmh->_NET_WM_WINDOW_TYPE_DOCK,
ewmh->_NET_WM_WINDOW_TYPE_NOTIFICATION,
ewmh->_NET_WM_WINDOW_TYPE_DIALOG,
ewmh->_NET_WM_WINDOW_TYPE_UTILITY,
ewmh->_NET_WM_WINDOW_TYPE_TOOLBAR};
xcb_ewmh_set_supported(ewmh, default_screen, LENGTH(net_atoms), net_atoms);
ewmh_set_supporting(motion_recorder);
xcb_intern_atom_reply_t *iar = xcb_intern_atom_reply(dpy, xcb_intern_atom(dpy, 0, strlen("_COMPTON_SHADOW"), "_COMPTON_SHADOW"), NULL);
if (iar != NULL) {
compton_shadow = iar->atom;
free(iar);
}
const xcb_query_extension_reply_t *qep = xcb_get_extension_data(dpy, &xcb_randr_id);
if (qep->present && import_monitors()) {
randr = true;
randr_base = qep->first_event;
xcb_randr_select_input(dpy, root, XCB_RANDR_NOTIFY_MASK_SCREEN_CHANGE);
} else {
randr = false;
warn("Couldn't retrieve monitors via RandR.\n");
xcb_rectangle_t rect = (xcb_rectangle_t) {0, 0, screen_width, screen_height};
monitor_t *m = add_monitor(&rect);
add_desktop(m, make_desktop(NULL));
}
ewmh_update_number_of_desktops();
ewmh_update_desktop_names();
ewmh_update_current_desktop();
frozen_pointer = make_pointer_state();
xcb_get_input_focus_reply_t *ifo = xcb_get_input_focus_reply(dpy, xcb_get_input_focus(dpy), NULL);
if (ifo != NULL && (ifo->focus == XCB_INPUT_FOCUS_POINTER_ROOT || ifo->focus == XCB_NONE))
clear_input_focus();
free(ifo);
}
void register_events(void)
{
uint32_t values[] = {ROOT_EVENT_MASK};
xcb_generic_error_t *e = xcb_request_check(dpy, xcb_change_window_attributes_checked(dpy, root, XCB_CW_EVENT_MASK, values));
if (e != NULL) {
xcb_disconnect(dpy);
err("Another window manager is already running.\n");
}
}
bool import_monitors(void)
{
PUTS("import monitors");
xcb_randr_get_screen_resources_current_reply_t *sres = xcb_randr_get_screen_resources_current_reply(dpy, xcb_randr_get_screen_resources_current(dpy, root), NULL);
if (sres == NULL)
return false;
int len = xcb_randr_get_screen_resources_current_outputs_length(sres);
xcb_randr_output_t *outputs = xcb_randr_get_screen_resources_current_outputs(sres);
xcb_randr_get_output_info_cookie_t cookies[len];
for (int i = 0; i < len; i++)
cookies[i] = xcb_randr_get_output_info(dpy, outputs[i], XCB_CURRENT_TIME);
for (monitor_t *m = mon_head; m != NULL; m = m->next)
m->wired = false;
monitor_t *mm = NULL;
unsigned int num = 0;
for (int i = 0; i < len; i++) {
xcb_randr_get_output_info_reply_t *info = xcb_randr_get_output_info_reply(dpy, cookies[i], NULL);
if (info != NULL && info->crtc != XCB_NONE) {
xcb_randr_get_crtc_info_reply_t *cir = xcb_randr_get_crtc_info_reply(dpy, xcb_randr_get_crtc_info(dpy, info->crtc, XCB_CURRENT_TIME), NULL);
if (cir != NULL) {
xcb_rectangle_t rect = (xcb_rectangle_t) {cir->x, cir->y, cir->width, cir->height};
mm = get_monitor_by_id(outputs[i]);
if (mm != NULL) {
mm->rectangle = rect;
for (desktop_t *d = mm->desk_head; d != NULL; d = d->next)
for (node_t *n = first_extrema(d->root); n != NULL; n = next_leaf(n, d->root))
fit_monitor(mm, n->client);
arrange(mm, mm->desk);
mm->wired = true;
PRINTF("update monitor %s (0x%X)\n", mm->name, mm->id);
} else {
mm = add_monitor(&rect);
char *name = (char *)xcb_randr_get_output_info_name(info);
size_t name_len = MIN(sizeof(mm->name), (size_t)xcb_randr_get_output_info_name_length(info));
strncpy(mm->name, name, name_len);
mm->name[name_len] = '\0';
mm->id = outputs[i];
add_desktop(mm, make_desktop(NULL));
PRINTF("add monitor %s (0x%X)\n", mm->name, mm->id);
}
num++;
}
free(cir);
}
free(info);
}
monitor_t *m = mon_head;
while (m != NULL) {
monitor_t *next = m->next;
if (!m->wired) {
PRINTF("remove monitor %s (0x%X)\n", m->name, m->id);
merge_monitors(m, mm);
remove_monitor(m);
}
m = next;
}
free(sres);
update_motion_recorder();
return (num_monitors > 0);
}
void quit(void)
{
running = false;
}
void cleanup(void)
{
while (mon_head != NULL)
remove_monitor(mon_head);
while (rule_head != NULL)
remove_rule(rule_head);
free(frozen_pointer);
}
void put_status(void)
{
if (status_fifo == NULL)
return;
if (status_prefix != NULL)
fprintf(status_fifo, "%s", status_prefix);
bool urgent = false;
for (monitor_t *m = mon_head; m != NULL; m = m->next) {
fprintf(status_fifo, "%c%s:", (mon == m ? 'M' : 'm'), m->name);
for (desktop_t *d = m->desk_head; d != NULL; d = d->next, urgent = false) {
for (node_t *n = first_extrema(d->root); n != NULL && !urgent; n = next_leaf(n, d->root))
urgent |= n->client->urgent;
fprintf(status_fifo, "%c%s:", m->desk == d ? (urgent ? 'U' : 'D') : (d->root == NULL ? 'E' : (urgent ? 'u' : 'd')), d->name);
}
}
if (mon != NULL && mon->desk != NULL)
fprintf(status_fifo, "L%s", (mon->desk->layout == LAYOUT_TILED ? "tiled" : "monocle"));
fprintf(status_fifo, "\n");
fflush(status_fifo);
}