7 #include <sys/socket.h>
9 #include <sys/select.h>
13 #include <xcb/xcb_event.h>
27 // check for other WM and initiate events capture
28 int register_events(void)
30 xcb_generic_error_t *error;
31 unsigned int values[] = {XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT | XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY | XCB_EVENT_MASK_PROPERTY_CHANGE | XCB_EVENT_MASK_BUTTON_PRESS};
32 error = xcb_request_check(dpy, xcb_change_window_attributes_checked(dpy, screen->root, XCB_CW_EVENT_MASK, values));
38 /* wrapper to get atoms using xcb */
39 void get_atoms(char **names, xcb_atom_t *atoms, unsigned int count)
41 xcb_intern_atom_cookie_t cookies[count];
42 xcb_intern_atom_reply_t *reply;
44 for (unsigned int i = 0; i < count; i++)
45 cookies[i] = xcb_intern_atom(dpy, 0, strlen(names[i]), names[i]);
46 for (unsigned int i = 0; i < count; i++) {
47 reply = xcb_intern_atom_reply(dpy, cookies[i], NULL);
49 /* PRINTF("%s : %d\n", names[i], reply->atom); */
50 atoms[i] = reply->atom; free(reply);
52 PUTS("warning: failed to register atoms");
57 xcb_screen_t *screen_of_display(xcb_connection_t *dpy, int default_screen)
59 xcb_screen_iterator_t iter = xcb_setup_roots_iterator(xcb_get_setup(dpy));
60 for (; iter.rem; --default_screen, xcb_screen_next(&iter))
61 if (default_screen == 0) return iter.data;
67 if (signal(SIGCHLD, sigchld) == SIG_ERR)
68 die("cannot install SIGCHLD handler\n");
69 while (0 < waitpid(-1, NULL, WNOHANG))
73 void setup(int default_screen)
76 screen = screen_of_display(dpy, default_screen);
78 die("error: cannot aquire screen\n");
79 screen_width = screen->width_in_pixels;
80 screen_height = screen->height_in_pixels;
82 /* set up atoms for dialog/notification windows */
83 get_atoms(WM_ATOM_NAME, wmatoms, WM_COUNT);
84 get_atoms(NET_ATOM_NAME, netatoms, NET_COUNT);
86 xcb_change_property(dpy, XCB_PROP_MODE_REPLACE, screen->root, netatoms[NET_SUPPORTED], XCB_ATOM_ATOM, 32, NET_COUNT, netatoms);
92 int sock_fd, ret_fd, xfd, sel, nbr;
93 struct sockaddr_un sock_address;
95 char msg[BUFSIZ], rsp[BUFSIZ];
97 xcb_generic_event_t *event;
101 dpy = xcb_connect(NULL, &default_screen);
103 if (xcb_connection_has_error(dpy))
104 die("error: cannot open display\n");
106 setup(default_screen);
108 /* if (register_events() == 1) { */
109 /* xcb_disconnect(dpy); */
110 /* die("another WM is already running\n"); */
113 xfd = xcb_get_file_descriptor(dpy);
115 sock_path = getenv(SOCK_PATH);
117 if (sock_path == NULL)
118 die("BSPWM_SOCKET environment variable is not set\n");
120 sock_address.sun_family = AF_UNIX;
121 strcpy(sock_address.sun_path, sock_path);
124 sock_fd = socket(AF_UNIX, SOCK_STREAM, 0);
127 die("error: could not create socket\n");
129 bind(sock_fd, (struct sockaddr *) &sock_address, sizeof(sock_address));
130 listen(sock_fd, SOMAXCONN);
132 sel = MAX(sock_fd, xfd) + 1;
138 FD_ZERO(&descriptors);
139 FD_SET(sock_fd, &descriptors);
140 FD_SET(xfd, &descriptors);
144 if (select(sel, &descriptors, NULL, NULL, NULL)) {
146 if (FD_ISSET(xfd, &descriptors)) {
147 while ((event = xcb_poll_for_event(dpy)) != NULL) {
153 if (FD_ISSET(sock_fd, &descriptors)) {
154 ret_fd = accept(sock_fd, NULL, 0);
155 if (ret_fd > 0 && (nbr = recv(ret_fd, msg, sizeof(msg), 0)) > 0) {
157 strcpy(rsp, EMPTY_RESPONSE);
158 process_message(msg, rsp);
159 send(ret_fd, rsp, strlen(rsp), 0);