/* * Repeatedly tries to grab pointer and keyboard (up to 1000 times). * */ void grab_pointer_and_keyboard(xcb_connection_t *conn, xcb_screen_t *screen, xcb_cursor_t cursor) { xcb_grab_pointer_cookie_t pcookie; xcb_grab_pointer_reply_t *preply; xcb_grab_keyboard_cookie_t kcookie; xcb_grab_keyboard_reply_t *kreply; int tries = 10000; while (tries-- > 0) { pcookie = xcb_grab_pointer( conn, false, /* get all pointer events specified by the following mask */ screen->root, /* grab the root window */ XCB_NONE, /* which events to let through */ XCB_GRAB_MODE_ASYNC, /* pointer events should continue as normal */ XCB_GRAB_MODE_ASYNC, /* keyboard mode */ XCB_NONE, /* confine_to = in which window should the cursor stay */ cursor, /* we change the cursor to whatever the user wanted */ XCB_CURRENT_TIME ); if ((preply = xcb_grab_pointer_reply(conn, pcookie, NULL)) && preply->status == XCB_GRAB_STATUS_SUCCESS) { free(preply); break; } /* Make this quite a bit slower */ usleep(50); } while (tries-- > 0) { kcookie = xcb_grab_keyboard( conn, true, /* report events */ screen->root, /* grab the root window */ XCB_CURRENT_TIME, XCB_GRAB_MODE_ASYNC, /* process events as normal, do not require sync */ XCB_GRAB_MODE_ASYNC ); if ((kreply = xcb_grab_keyboard_reply(conn, kcookie, NULL)) && kreply->status == XCB_GRAB_STATUS_SUCCESS) { free(kreply); break; } /* Make this quite a bit slower */ usleep(50); } if (tries <= 0) errx(EXIT_FAILURE, "Cannot grab pointer/keyboard"); }
static bool grab_keyboard(xcb_connection_t *conn, xcb_screen_t *screen) { xcb_grab_keyboard_cookie_t cookie = xcb_grab_keyboard(conn, true, screen->root, XCB_CURRENT_TIME, XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC); xcb_grab_keyboard_reply_t *reply; if ((reply = xcb_grab_keyboard_reply(conn, cookie, NULL))) { if (reply->status == XCB_GRAB_STATUS_SUCCESS) { free(reply); return true; } free(reply); } return false; }
/** * This app grabs the keyboard from X. * It is used from ksldtest to verify we report if grabbing failed when the keyboard has been grabbed by another * X Client. It needs to be another application, otherwise the grab cannot fail. **/ int main(int argc, char **argv) { QCoreApplication app(argc, argv); // connect to xcb int screen = 0; xcb_connection_t *c = xcb_connect(nullptr, &screen); Q_ASSERT(c); xcb_grab_keyboard(c, 1, rootWindow(c, screen), XCB_CURRENT_TIME, XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC); xcb_flush(c); const int exitCode = app.exec(); xcb_ungrab_keyboard(c, XCB_CURRENT_TIME); xcb_flush(c); xcb_disconnect(c); return exitCode; }
/** Grab the keyboard. * \return True if keyboard was grabbed. */ static bool keygrabber_grab(void) { int i; xcb_grab_keyboard_reply_t *xgb; for(i = 1000; i; i--) { if((xgb = xcb_grab_keyboard_reply(globalconf.connection, xcb_grab_keyboard(globalconf.connection, true, globalconf.screen->root, XCB_CURRENT_TIME, XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC), NULL))) { p_delete(&xgb); return true; } usleep(1000); } return false; }
int take_keyboard ( xcb_window_t w ) { for ( int i = 0; i < 500; i++ ) { if ( xcb_connection_has_error ( xcb->connection ) ) { fprintf ( stderr, "Connection has error\n" ); exit ( EXIT_FAILURE ); } xcb_grab_keyboard_cookie_t cc = xcb_grab_keyboard ( xcb->connection, 1, w, XCB_CURRENT_TIME, XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC ); xcb_grab_keyboard_reply_t *r = xcb_grab_keyboard_reply ( xcb->connection, cc, NULL ); if ( r ) { if ( r->status == XCB_GRAB_STATUS_SUCCESS ) { free ( r ); return 1; } free ( r ); } usleep ( 1000 ); } return 0; }
/* * Creates the config file and tells i3 to reload. * */ static void finish() { printf("creating \"%s\"...\n", config_path); if (!(dpy = XOpenDisplay(NULL))) errx(1, "Could not connect to X11"); FILE *kc_config = fopen(SYSCONFDIR "/i3/config.keycodes", "r"); if (kc_config == NULL) err(1, "Could not open input file \"%s\"", SYSCONFDIR "/i3/config.keycodes"); FILE *ks_config = fopen(config_path, "w"); if (ks_config == NULL) err(1, "Could not open output config file \"%s\"", config_path); free(config_path); char *line = NULL; size_t len = 0; #ifndef USE_FGETLN ssize_t read; #endif bool head_of_file = true; /* write a header about auto-generation to the output file */ fputs("# This file has been auto-generated by i3-config-wizard(1).\n", ks_config); fputs("# It will not be overwritten, so edit it as you like.\n", ks_config); fputs("#\n", ks_config); fputs("# Should you change your keyboard layout somewhen, delete\n", ks_config); fputs("# this file and re-run i3-config-wizard(1).\n", ks_config); fputs("#\n", ks_config); #ifdef USE_FGETLN char *buf = NULL; while ((buf = fgetln(kc_config, &len)) != NULL) { /* fgetln does not return null-terminated strings */ FREE(line); sasprintf(&line, "%.*s", len, buf); #else size_t linecap = 0; while ((read = getline(&line, &linecap, kc_config)) != -1) { len = strlen(line); #endif /* skip the warning block at the beginning of the input file */ if (head_of_file && strncmp("# WARNING", line, strlen("# WARNING")) == 0) continue; head_of_file = false; /* Skip leading whitespace */ char *walk = line; while (isspace(*walk) && walk < (line + len)) { /* Pre-output the skipped whitespaces to keep proper indentation */ fputc(*walk, ks_config); walk++; } /* Set the modifier the user chose */ if (strncmp(walk, "set $mod ", strlen("set $mod ")) == 0) { if (modifier == MOD_Mod1) fputs("set $mod Mod1\n", ks_config); else fputs("set $mod Mod4\n", ks_config); continue; } /* Check for 'bindcode'. If it’s not a bindcode line, we * just copy it to the output file */ if (strncmp(walk, "bindcode", strlen("bindcode")) != 0) { fputs(walk, ks_config); continue; } char *result = rewrite_binding(walk); fputs(result, ks_config); free(result); } /* sync to do our best in order to have the file really stored on disk */ fflush(ks_config); fsync(fileno(ks_config)); #ifndef USE_FGETLN free(line); #endif fclose(kc_config); fclose(ks_config); /* tell i3 to reload the config file */ int sockfd = ipc_connect(socket_path); ipc_send_message(sockfd, strlen("reload"), 0, (uint8_t*)"reload"); close(sockfd); exit(0); } int main(int argc, char *argv[]) { config_path = resolve_tilde("~/.i3/config"); socket_path = getenv("I3SOCK"); char *pattern = "-misc-fixed-medium-r-normal--13-120-75-75-C-70-iso10646-1"; char *patternbold = "-misc-fixed-bold-r-normal--13-120-75-75-C-70-iso10646-1"; int o, option_index = 0; static struct option long_options[] = { {"socket", required_argument, 0, 's'}, {"version", no_argument, 0, 'v'}, {"limit", required_argument, 0, 'l'}, {"prompt", required_argument, 0, 'P'}, {"prefix", required_argument, 0, 'p'}, {"font", required_argument, 0, 'f'}, {"help", no_argument, 0, 'h'}, {0, 0, 0, 0} }; char *options_string = "s:vh"; while ((o = getopt_long(argc, argv, options_string, long_options, &option_index)) != -1) { switch (o) { case 's': FREE(socket_path); socket_path = strdup(optarg); break; case 'v': printf("i3-config-wizard " I3_VERSION "\n"); return 0; case 'h': printf("i3-config-wizard " I3_VERSION "\n"); printf("i3-config-wizard [-s <socket>] [-v]\n"); return 0; } } /* Check if the destination config file does not exist but the path is * writable. If not, exit now, this program is not useful in that case. */ struct stat stbuf; if (stat(config_path, &stbuf) == 0) { printf("The config file \"%s\" already exists. Exiting.\n", config_path); return 0; } /* Create ~/.i3 if it does not yet exist */ char *config_dir = resolve_tilde("~/.i3"); if (stat(config_dir, &stbuf) != 0) if (mkdir(config_dir, 0755) == -1) err(1, "mkdir(%s) failed", config_dir); free(config_dir); int fd; if ((fd = open(config_path, O_CREAT | O_RDWR, 0644)) == -1) { printf("Cannot open file \"%s\" for writing: %s. Exiting.\n", config_path, strerror(errno)); return 0; } close(fd); unlink(config_path); if (socket_path == NULL) socket_path = root_atom_contents("I3_SOCKET_PATH"); if (socket_path == NULL) socket_path = "/tmp/i3-ipc.sock"; int screens; if ((conn = xcb_connect(NULL, &screens)) == NULL || xcb_connection_has_error(conn)) errx(1, "Cannot open display\n"); xcb_get_modifier_mapping_cookie_t modmap_cookie; modmap_cookie = xcb_get_modifier_mapping(conn); symbols = xcb_key_symbols_alloc(conn); /* 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 root_screen = xcb_aux_get_screen(conn, screens); root = root_screen->root; if (!(modmap_reply = xcb_get_modifier_mapping_reply(conn, modmap_cookie, NULL))) errx(EXIT_FAILURE, "Could not get modifier mapping\n"); xcb_numlock_mask = get_mod_mask_for(XCB_NUM_LOCK, symbols, modmap_reply); font = load_font(pattern, true); bold_font = load_font(patternbold, true); /* Open an input window */ win = xcb_generate_id(conn); xcb_create_window( conn, XCB_COPY_FROM_PARENT, win, /* the window id */ root, /* parent == root */ 490, 297, 300, 205, /* dimensions */ 0, /* X11 border = 0, we draw our own */ XCB_WINDOW_CLASS_INPUT_OUTPUT, XCB_WINDOW_CLASS_COPY_FROM_PARENT, /* copy visual from parent */ XCB_CW_BACK_PIXEL | XCB_CW_EVENT_MASK, (uint32_t[]){ 0, /* back pixel: black */ XCB_EVENT_MASK_EXPOSURE | XCB_EVENT_MASK_BUTTON_PRESS }); /* Map the window (make it visible) */ xcb_map_window(conn, win); /* Setup NetWM atoms */ #define xmacro(name) \ do { \ xcb_intern_atom_reply_t *reply = xcb_intern_atom_reply(conn, name ## _cookie, NULL); \ if (!reply) \ errx(EXIT_FAILURE, "Could not get atom " # name "\n"); \ \ A_ ## name = reply->atom; \ free(reply); \ } while (0); #include "atoms.xmacro" #undef xmacro /* Set dock mode */ xcb_change_property(conn, XCB_PROP_MODE_REPLACE, win, A__NET_WM_WINDOW_TYPE, A_ATOM, 32, 1, (unsigned char*) &A__NET_WM_WINDOW_TYPE_DIALOG); /* Set window title */ xcb_change_property(conn, XCB_PROP_MODE_REPLACE, win, A__NET_WM_NAME, A_UTF8_STRING, 8, strlen("i3: first configuration"), "i3: first configuration"); /* Create pixmap */ pixmap = xcb_generate_id(conn); pixmap_gc = xcb_generate_id(conn); xcb_create_pixmap(conn, root_screen->root_depth, pixmap, win, 500, 500); xcb_create_gc(conn, pixmap_gc, pixmap, 0, 0); /* Grab the keyboard to get all input */ xcb_flush(conn); /* Try (repeatedly, if necessary) to grab the keyboard. We might not * get the keyboard at the first attempt because of the keybinding * still being active when started via a wm’s keybinding. */ xcb_grab_keyboard_cookie_t cookie; xcb_grab_keyboard_reply_t *reply = NULL; int count = 0; while ((reply == NULL || reply->status != XCB_GRAB_STATUS_SUCCESS) && (count++ < 500)) { cookie = xcb_grab_keyboard(conn, false, win, XCB_CURRENT_TIME, XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC); reply = xcb_grab_keyboard_reply(conn, cookie, NULL); usleep(1000); } if (reply->status != XCB_GRAB_STATUS_SUCCESS) { fprintf(stderr, "Could not grab keyboard, status = %d\n", reply->status); exit(-1); } xcb_flush(conn); xcb_generic_event_t *event; while ((event = xcb_wait_for_event(conn)) != NULL) { if (event->response_type == 0) { fprintf(stderr, "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); switch (type) { case XCB_KEY_PRESS: handle_key_press(NULL, conn, (xcb_key_press_event_t*)event); break; /* TODO: handle mappingnotify */ case XCB_BUTTON_PRESS: handle_button_press((xcb_button_press_event_t*)event); break; case XCB_EXPOSE: handle_expose(); break; } free(event); } return 0; }
/* * Repeatedly tries to grab pointer and keyboard (up to the specified number of * tries). * * Returns true if the grab succeeded, false if not. * */ bool grab_pointer_and_keyboard(xcb_connection_t *conn, xcb_screen_t *screen, xcb_cursor_t cursor, int tries) { xcb_grab_pointer_cookie_t pcookie; xcb_grab_pointer_reply_t *preply; xcb_grab_keyboard_cookie_t kcookie; xcb_grab_keyboard_reply_t *kreply; const suseconds_t screen_redraw_timeout = 100000; /* 100ms */ /* Using few variables to trigger a redraw_screen() if too many tries */ bool redrawn = false; struct timeval start; if (gettimeofday(&start, NULL) == -1) { err(EXIT_FAILURE, "gettimeofday"); } while (tries-- > 0) { pcookie = xcb_grab_pointer( conn, false, /* get all pointer events specified by the following mask */ screen->root, /* grab the root window */ XCB_NONE, /* which events to let through */ XCB_GRAB_MODE_ASYNC, /* pointer events should continue as normal */ XCB_GRAB_MODE_ASYNC, /* keyboard mode */ XCB_NONE, /* confine_to = in which window should the cursor stay */ cursor, /* we change the cursor to whatever the user wanted */ XCB_CURRENT_TIME); if ((preply = xcb_grab_pointer_reply(conn, pcookie, NULL)) && preply->status == XCB_GRAB_STATUS_SUCCESS) { free(preply); break; } /* Make this quite a bit slower */ usleep(50); struct timeval now; if (gettimeofday(&now, NULL) == -1) { err(EXIT_FAILURE, "gettimeofday"); } struct timeval elapsed; timersub(&now, &start, &elapsed); if (!redrawn && (tries % 100) == 0 && elapsed.tv_usec >= screen_redraw_timeout) { redraw_screen(); redrawn = true; } } while (tries-- > 0) { kcookie = xcb_grab_keyboard( conn, true, /* report events */ screen->root, /* grab the root window */ XCB_CURRENT_TIME, XCB_GRAB_MODE_ASYNC, /* process events as normal, do not require sync */ XCB_GRAB_MODE_ASYNC); if ((kreply = xcb_grab_keyboard_reply(conn, kcookie, NULL)) && kreply->status == XCB_GRAB_STATUS_SUCCESS) { free(kreply); break; } /* Make this quite a bit slower */ usleep(50); struct timeval now; if (gettimeofday(&now, NULL) == -1) { err(EXIT_FAILURE, "gettimeofday"); } struct timeval elapsed; timersub(&now, &start, &elapsed); /* Trigger a screen redraw if 100ms elapsed */ if (!redrawn && (tries % 100) == 0 && elapsed.tv_usec >= screen_redraw_timeout) { redraw_screen(); redrawn = true; } } return (tries > 0); }
/* * Repeatedly tries to grab pointer and keyboard (up to 10000 times). * */ void grab_pointer_and_keyboard(xcb_connection_t *conn, xcb_screen_t *screen, xcb_cursor_t cursor) { xcb_grab_pointer_cookie_t pcookie; xcb_grab_pointer_reply_t *preply; xcb_grab_keyboard_cookie_t kcookie; xcb_grab_keyboard_reply_t *kreply; int tries = 10000; /* Using few variables to trigger a redraw_screen() if too many tries */ bool redrawn = false; time_t start = clock(); while (tries-- > 0) { pcookie = xcb_grab_pointer( conn, false, /* get all pointer events specified by the following mask */ screen->root, /* grab the root window */ XCB_NONE, /* which events to let through */ XCB_GRAB_MODE_ASYNC, /* pointer events should continue as normal */ XCB_GRAB_MODE_ASYNC, /* keyboard mode */ XCB_NONE, /* confine_to = in which window should the cursor stay */ cursor, /* we change the cursor to whatever the user wanted */ XCB_CURRENT_TIME); if ((preply = xcb_grab_pointer_reply(conn, pcookie, NULL)) && preply->status == XCB_GRAB_STATUS_SUCCESS) { free(preply); break; } /* Make this quite a bit slower */ usleep(50); /* Measure elapsed time and trigger a screen redraw if elapsed > 250000 */ if (!redrawn && (tries % 100) == 0 && (clock() - start) > 250000) { redraw_screen(); redrawn = true; } } while (tries-- > 0) { kcookie = xcb_grab_keyboard( conn, true, /* report events */ screen->root, /* grab the root window */ XCB_CURRENT_TIME, XCB_GRAB_MODE_ASYNC, /* process events as normal, do not require sync */ XCB_GRAB_MODE_ASYNC); if ((kreply = xcb_grab_keyboard_reply(conn, kcookie, NULL)) && kreply->status == XCB_GRAB_STATUS_SUCCESS) { free(kreply); break; } /* Make this quite a bit slower */ usleep(50); /* Measure elapsed time and trigger a screen redraw if elapsed > 250000 */ if (!redrawn && (tries % 100) == 0 && (clock() - start) > 250000) { redraw_screen(); redrawn = true; } } /* After trying for 10000 times, i3lock will display an error message * for 2 sec prior to terminate. */ if (tries <= 0) { pam_state = STATE_I3LOCK_LOCK_FAILED; redraw_screen(); sleep(1); errx(EXIT_FAILURE, "Cannot grab pointer/keyboard"); } }
static void ephyrProcessKeyRelease(xcb_generic_event_t *xev) { xcb_connection_t *conn = hostx_get_xcbconn(); xcb_key_release_event_t *key = (xcb_key_release_event_t *)xev; static xcb_key_symbols_t *keysyms; static int grabbed_screen = -1; int mod1_down = ephyrUpdateGrabModifierState(key->state); if (!keysyms) keysyms = xcb_key_symbols_alloc(conn); if (!EphyrWantNoHostGrab && (((xcb_key_symbols_get_keysym(keysyms, key->detail, 0) == XK_Shift_L || xcb_key_symbols_get_keysym(keysyms, key->detail, 0) == XK_Shift_R) && (key->state & XCB_MOD_MASK_CONTROL)) || ((xcb_key_symbols_get_keysym(keysyms, key->detail, 0) == XK_Control_L || xcb_key_symbols_get_keysym(keysyms, key->detail, 0) == XK_Control_R) && (key->state & XCB_MOD_MASK_SHIFT)))) { KdScreenInfo *screen = screen_from_window(key->event); EphyrScrPriv *scrpriv = screen->driver; if (grabbed_screen != -1) { xcb_ungrab_keyboard(conn, XCB_TIME_CURRENT_TIME); xcb_ungrab_pointer(conn, XCB_TIME_CURRENT_TIME); grabbed_screen = -1; hostx_set_win_title(screen, "(ctrl+shift grabs mouse and keyboard)"); } else if (!mod1_down) { /* Attempt grab */ xcb_grab_keyboard_cookie_t kbgrabc = xcb_grab_keyboard(conn, TRUE, scrpriv->win, XCB_TIME_CURRENT_TIME, XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC); xcb_grab_keyboard_reply_t *kbgrabr; xcb_grab_pointer_cookie_t pgrabc = xcb_grab_pointer(conn, TRUE, scrpriv->win, 0, XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC, scrpriv->win, XCB_NONE, XCB_TIME_CURRENT_TIME); xcb_grab_pointer_reply_t *pgrabr; kbgrabr = xcb_grab_keyboard_reply(conn, kbgrabc, NULL); if (!kbgrabr || kbgrabr->status != XCB_GRAB_STATUS_SUCCESS) { xcb_discard_reply(conn, pgrabc.sequence); xcb_ungrab_pointer(conn, XCB_TIME_CURRENT_TIME); } else { pgrabr = xcb_grab_pointer_reply(conn, pgrabc, NULL); if (!pgrabr || pgrabr->status != XCB_GRAB_STATUS_SUCCESS) { xcb_ungrab_keyboard(conn, XCB_TIME_CURRENT_TIME); } else { grabbed_screen = scrpriv->mynum; hostx_set_win_title (screen, "(ctrl+shift releases mouse and keyboard)"); } } } } if (!ephyrKbd || !((EphyrKbdPrivate *) ephyrKbd->driverPrivate)->enabled) { return; } /* Still send the release event even if above has happened server * will get confused with just an up event. Maybe it would be * better to just block shift+ctrls getting to kdrive all * together. */ ephyrUpdateModifierState(key->state); KdEnqueueKeyboardEvent(ephyrKbd, key->detail, TRUE); }
int main(int argc, char *argv[]) { format = sstrdup("%s"); char *socket_path = NULL; char *pattern = sstrdup("pango:monospace 8"); int o, option_index = 0; static struct option long_options[] = { {"socket", required_argument, 0, 's'}, {"version", no_argument, 0, 'v'}, {"limit", required_argument, 0, 'l'}, {"prompt", required_argument, 0, 'P'}, {"prefix", required_argument, 0, 'p'}, {"format", required_argument, 0, 'F'}, {"font", required_argument, 0, 'f'}, {"help", no_argument, 0, 'h'}, {0, 0, 0, 0}}; char *options_string = "s:p:P:f:l:F:vh"; while ((o = getopt_long(argc, argv, options_string, long_options, &option_index)) != -1) { switch (o) { case 's': FREE(socket_path); socket_path = sstrdup(optarg); break; case 'v': printf("i3-input " I3_VERSION); return 0; case 'p': /* This option is deprecated, but will still work in i3 v4.1, 4.2 and 4.3 */ fprintf(stderr, "i3-input: WARNING: the -p option is DEPRECATED in favor of the -F (format) option\n"); FREE(format); sasprintf(&format, "%s%%s", optarg); break; case 'l': limit = atoi(optarg); break; case 'P': i3string_free(prompt); prompt = i3string_from_utf8(optarg); break; case 'f': FREE(pattern); pattern = sstrdup(optarg); break; case 'F': FREE(format); format = sstrdup(optarg); break; case 'h': printf("i3-input " I3_VERSION "\n"); printf("i3-input [-s <socket>] [-F <format>] [-l <limit>] [-P <prompt>] [-f <font>] [-v]\n"); printf("\n"); printf("Example:\n"); printf(" i3-input -F 'workspace \"%%s\"' -P 'Switch to workspace: '\n"); return 0; } } printf("using format \"%s\"\n", format); int screen; conn = xcb_connect(NULL, &screen); if (!conn || xcb_connection_has_error(conn)) die("Cannot open display\n"); sockfd = ipc_connect(socket_path); root_screen = xcb_aux_get_screen(conn, screen); root = root_screen->root; symbols = xcb_key_symbols_alloc(conn); init_dpi(); font = load_font(pattern, true); set_font(&font); if (prompt != NULL) prompt_offset = predict_text_width(prompt); const xcb_rectangle_t win_pos = get_window_position(); /* Open an input window */ win = xcb_generate_id(conn); xcb_create_window( conn, XCB_COPY_FROM_PARENT, win, /* the window id */ root, /* parent == root */ win_pos.x, win_pos.y, win_pos.width, win_pos.height, /* dimensions */ 0, /* X11 border = 0, we draw our own */ XCB_WINDOW_CLASS_INPUT_OUTPUT, XCB_WINDOW_CLASS_COPY_FROM_PARENT, /* copy visual from parent */ XCB_CW_BACK_PIXEL | XCB_CW_OVERRIDE_REDIRECT | XCB_CW_EVENT_MASK, (uint32_t[]){ 0, /* back pixel: black */ 1, /* override redirect: don’t manage this window */ XCB_EVENT_MASK_EXPOSURE}); /* Map the window (make it visible) */ xcb_map_window(conn, win); /* Initialize the drawable surface */ draw_util_surface_init(conn, &surface, win, get_visualtype(root_screen), win_pos.width, win_pos.height); /* Grab the keyboard to get all input */ xcb_flush(conn); /* Try (repeatedly, if necessary) to grab the keyboard. We might not * get the keyboard at the first attempt because of the keybinding * still being active when started via a wm’s keybinding. */ xcb_grab_keyboard_cookie_t cookie; xcb_grab_keyboard_reply_t *reply = NULL; int count = 0; while ((reply == NULL || reply->status != XCB_GRAB_STATUS_SUCCESS) && (count++ < 500)) { cookie = xcb_grab_keyboard(conn, false, win, XCB_CURRENT_TIME, XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC); reply = xcb_grab_keyboard_reply(conn, cookie, NULL); usleep(1000); } if (reply->status != XCB_GRAB_STATUS_SUCCESS) { fprintf(stderr, "Could not grab keyboard, status = %d\n", reply->status); exit(-1); } xcb_flush(conn); xcb_generic_event_t *event; while ((event = xcb_wait_for_event(conn)) != NULL) { if (event->response_type == 0) { fprintf(stderr, "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); switch (type) { case XCB_KEY_PRESS: handle_key_press(NULL, conn, (xcb_key_press_event_t *)event); break; case XCB_KEY_RELEASE: handle_key_release(NULL, conn, (xcb_key_release_event_t *)event); break; case XCB_EXPOSE: if (((xcb_expose_event_t *)event)->count == 0) { handle_expose(NULL, conn, (xcb_expose_event_t *)event); } break; } free(event); } draw_util_surface_free(conn, &surface); return 0; }