2 * vim:ts=4:sw=4:expandtab
4 * i3bar - an xcb-based status- and ws-bar for i3
5 * © 2010-2011 Axel Wagner and contributors (see also: LICENSE)
7 * xcb.c: Communicating with X
11 #include <xcb/xproto.h>
12 #include <xcb/xcb_atom.h>
13 #include <xcb/xcb_aux.h>
16 #include "xcb_compat.h"
31 #include <X11/XKBlib.h>
32 #include <X11/extensions/XKB.h>
37 /* We save the Atoms in an easy to access array, indexed by an enum */
39 #define ATOM_DO(name) name,
40 #include "xcb_atoms.def"
44 xcb_intern_atom_cookie_t atom_cookies[NUM_ATOMS];
45 xcb_atom_t atoms[NUM_ATOMS];
47 /* Variables, that are the same for all functions at all times */
48 xcb_connection_t *xcb_connection;
50 xcb_screen_t *xcb_screen;
51 xcb_window_t xcb_root;
53 /* This is needed for integration with libi3 */
54 xcb_connection_t *conn;
56 /* The font we'll use */
59 /* These are only relevant for XKB, which we only need for grabbing modifiers */
64 /* Because the statusline is the same on all outputs, we have
65 * global buffer to render it on */
66 xcb_gcontext_t statusline_ctx;
67 xcb_gcontext_t statusline_clear;
68 xcb_pixmap_t statusline_pm;
69 uint32_t statusline_width;
71 /* Event-Watchers, to interact with the user */
77 /* The parsed colors */
81 uint32_t active_ws_fg;
82 uint32_t active_ws_bg;
83 uint32_t active_ws_border;
84 uint32_t inactive_ws_fg;
85 uint32_t inactive_ws_bg;
86 uint32_t inactive_ws_border;
87 uint32_t urgent_ws_bg;
88 uint32_t urgent_ws_fg;
89 uint32_t urgent_ws_border;
92 uint32_t focus_ws_border;
94 struct xcb_colors_t colors;
96 /* We define xcb_request_failed as a macro to include the relevant line-number */
97 #define xcb_request_failed(cookie, err_msg) _xcb_request_failed(cookie, err_msg, __LINE__)
98 int _xcb_request_failed(xcb_void_cookie_t cookie, char *err_msg, int line) {
99 xcb_generic_error_t *err;
100 if ((err = xcb_request_check(xcb_connection, cookie)) != NULL) {
101 fprintf(stderr, "[%s:%d] ERROR: %s. X Error Code: %d\n", __FILE__, line, err_msg, err->error_code);
102 return err->error_code;
108 * Redraws the statusline to the buffer
111 void refresh_statusline() {
112 struct status_block *block;
114 uint32_t old_statusline_width = statusline_width;
115 statusline_width = 0;
117 /* Convert all blocks from UTF-8 to UCS-2 and predict the text width (in
119 TAILQ_FOREACH(block, &statusline_head, blocks) {
120 block->ucs2_full_text = (xcb_char2b_t*)convert_utf8_to_ucs2(block->full_text, &(block->glyph_count_full_text));
121 block->width = predict_text_width((char*)block->ucs2_full_text, block->glyph_count_full_text, true);
122 /* If this is not the last block, add some pixels for a separator. */
123 if (TAILQ_NEXT(block, blocks) != NULL)
125 statusline_width += block->width;
128 /* If the statusline is bigger than our screen we need to make sure that
129 * the pixmap provides enough space, so re-allocate if the width grew */
130 if (statusline_width > xcb_screen->width_in_pixels &&
131 statusline_width > old_statusline_width)
134 /* Clear the statusline pixmap. */
135 xcb_rectangle_t rect = { 0, 0, xcb_screen->width_in_pixels, font.height };
136 xcb_poly_fill_rectangle(xcb_connection, statusline_pm, statusline_clear, 1, &rect);
138 /* Draw the text of each block. */
140 TAILQ_FOREACH(block, &statusline_head, blocks) {
141 uint32_t colorpixel = (block->color ? get_colorpixel(block->color) : colors.bar_fg);
142 set_font_colors(statusline_ctx, colorpixel, colors.bar_bg);
143 draw_text((char*)block->ucs2_full_text, block->glyph_count_full_text,
144 true, statusline_pm, statusline_ctx, x, 0, block->width);
147 if (TAILQ_NEXT(block, blocks) != NULL) {
148 /* This is not the last block, draw a separator. */
149 set_font_colors(statusline_ctx, get_colorpixel("#666666"), colors.bar_bg);
150 xcb_poly_line(xcb_connection, XCB_COORD_MODE_ORIGIN, statusline_pm,
152 (xcb_point_t[]){ { x - 5, 2 }, { x - 5, font.height - 2 } });
155 FREE(block->ucs2_full_text);
160 * Hides all bars (unmaps them)
164 if (!config.hide_on_modifier) {
169 SLIST_FOREACH(walk, outputs, slist) {
173 xcb_unmap_window(xcb_connection, walk->bar);
179 * Unhides all bars (maps them)
183 if (!config.hide_on_modifier) {
188 xcb_void_cookie_t cookie;
194 SLIST_FOREACH(walk, outputs, slist) {
195 if (walk->bar == XCB_NONE) {
198 mask = XCB_CONFIG_WINDOW_X |
199 XCB_CONFIG_WINDOW_Y |
200 XCB_CONFIG_WINDOW_WIDTH |
201 XCB_CONFIG_WINDOW_HEIGHT |
202 XCB_CONFIG_WINDOW_STACK_MODE;
203 values[0] = walk->rect.x;
204 if (config.position == POS_TOP)
205 values[1] = walk->rect.y;
206 else values[1] = walk->rect.y + walk->rect.h - font.height - 6;
207 values[2] = walk->rect.w;
208 values[3] = font.height + 6;
209 values[4] = XCB_STACK_MODE_ABOVE;
210 DLOG("Reconfiguring Window for output %s to %d,%d\n", walk->name, values[0], values[1]);
211 cookie = xcb_configure_window_checked(xcb_connection,
216 if (xcb_request_failed(cookie, "Could not reconfigure window")) {
219 xcb_map_window(xcb_connection, walk->bar);
224 * Parse the colors into a format that we can use
227 void init_colors(const struct xcb_color_strings_t *new_colors) {
228 #define PARSE_COLOR(name, def) \
230 colors.name = get_colorpixel(new_colors->name ? new_colors->name : def); \
232 PARSE_COLOR(bar_fg, "#FFFFFF");
233 PARSE_COLOR(bar_bg, "#000000");
234 PARSE_COLOR(active_ws_fg, "#FFFFFF");
235 PARSE_COLOR(active_ws_bg, "#333333");
236 PARSE_COLOR(active_ws_border, "#333333");
237 PARSE_COLOR(inactive_ws_fg, "#888888");
238 PARSE_COLOR(inactive_ws_bg, "#222222");
239 PARSE_COLOR(inactive_ws_border, "#333333");
240 PARSE_COLOR(urgent_ws_fg, "#FFFFFF");
241 PARSE_COLOR(urgent_ws_bg, "#900000");
242 PARSE_COLOR(urgent_ws_border, "#2f343a");
243 PARSE_COLOR(focus_ws_fg, "#FFFFFF");
244 PARSE_COLOR(focus_ws_bg, "#285577");
245 PARSE_COLOR(focus_ws_border, "#4c7899");
250 * Handle a button-press-event (i.e. a mouse click on one of our bars).
251 * We determine, whether the click occured on a ws-button or if the scroll-
252 * wheel was used and change the workspace appropriately
255 void handle_button(xcb_button_press_event_t *event) {
258 /* Determine, which bar was clicked */
260 xcb_window_t bar = event->event;
261 SLIST_FOREACH(walk, outputs, slist) {
262 if (walk->bar == bar) {
268 DLOG("Unknown Bar klicked!\n");
272 /* TODO: Move this to extern get_ws_for_output() */
273 TAILQ_FOREACH(cur_ws, walk->workspaces, tailq) {
274 if (cur_ws->visible) {
279 if (cur_ws == NULL) {
280 DLOG("No Workspace active?\n");
284 int32_t x = event->event_x;
286 DLOG("Got Button %d\n", event->detail);
288 switch (event->detail) {
290 /* Left Mousbutton. We determine, which button was clicked
291 * and set cur_ws accordingly */
292 TAILQ_FOREACH(cur_ws, walk->workspaces, tailq) {
294 if (x >= 0 && x < cur_ws->name_width + 10) {
297 x -= cur_ws->name_width + 11;
299 if (cur_ws == NULL) {
304 /* Mouse wheel down. We select the next ws */
305 if (cur_ws == TAILQ_FIRST(walk->workspaces)) {
306 cur_ws = TAILQ_LAST(walk->workspaces, ws_head);
308 cur_ws = TAILQ_PREV(cur_ws, ws_head, tailq);
312 /* Mouse wheel up. We select the previos ws */
313 if (cur_ws == TAILQ_LAST(walk->workspaces, ws_head)) {
314 cur_ws = TAILQ_FIRST(walk->workspaces);
316 cur_ws = TAILQ_NEXT(cur_ws, tailq);
321 /* To properly handle workspace names with double quotes in them, we need
322 * to escape the double quotes. Unfortunately, that’s rather ugly in C: We
323 * first count the number of double quotes, then we allocate a large enough
324 * buffer, then we copy character by character. */
327 for (char *walk = cur_ws->name; *walk != '\0'; walk++) {
330 /* While we’re looping through the name anyway, we can save one
335 const size_t len = namelen + strlen("workspace \"\"") + 1;
336 char *buffer = scalloc(len+num_quotes);
337 strncpy(buffer, "workspace \"", strlen("workspace \""));
339 for (inpos = 0, outpos = strlen("workspace \"");
342 if (cur_ws->name[inpos] == '"') {
343 buffer[outpos] = '\\';
346 buffer[outpos] = cur_ws->name[inpos];
348 buffer[outpos] = '"';
349 i3_send_msg(I3_IPC_MESSAGE_TYPE_COMMAND, buffer);
354 * Configures the x coordinate of all trayclients. To be called after adding a
355 * new tray client or removing an old one.
358 static void configure_trayclients() {
359 trayclient *trayclient;
361 SLIST_FOREACH(output, outputs, slist) {
366 TAILQ_FOREACH_REVERSE(trayclient, output->trayclients, tc_head, tailq) {
367 if (!trayclient->mapped)
371 DLOG("Configuring tray window %08x to x=%d\n",
372 trayclient->win, output->rect.w - (clients * (font.height + 2)));
373 uint32_t x = output->rect.w - (clients * (font.height + 2));
374 xcb_configure_window(xcb_connection,
383 * Handles ClientMessages (messages sent from another client directly to us).
385 * At the moment, only the tray window will receive client messages. All
386 * supported client messages currently are _NET_SYSTEM_TRAY_OPCODE.
389 static void handle_client_message(xcb_client_message_event_t* event) {
390 if (event->type == atoms[_NET_SYSTEM_TRAY_OPCODE] &&
391 event->format == 32) {
392 DLOG("_NET_SYSTEM_TRAY_OPCODE received\n");
393 /* event->data.data32[0] is the timestamp */
394 uint32_t op = event->data.data32[1];
397 if (op == SYSTEM_TRAY_REQUEST_DOCK) {
398 xcb_window_t client = event->data.data32[2];
400 /* Listen for PropertyNotify events to get the most recent value of
401 * the XEMBED_MAPPED atom, also listen for UnmapNotify events */
402 mask = XCB_CW_EVENT_MASK;
403 values[0] = XCB_EVENT_MASK_PROPERTY_CHANGE |
404 XCB_EVENT_MASK_STRUCTURE_NOTIFY;
405 xcb_change_window_attributes(xcb_connection,
410 /* Request the _XEMBED_INFO property. The XEMBED specification
411 * (which is referred by the tray specification) says this *has* to
412 * be set, but VLC does not set it… */
415 xcb_get_property_cookie_t xembedc;
416 xcb_generic_error_t *error;
417 xembedc = xcb_get_property(xcb_connection,
421 XCB_GET_PROPERTY_TYPE_ANY,
425 xcb_get_property_reply_t *xembedr = xcb_get_property_reply(xcb_connection,
429 ELOG("Error getting _XEMBED_INFO property: error_code %d\n",
434 if (xembedr != NULL && xembedr->length != 0) {
435 DLOG("xembed format = %d, len = %d\n", xembedr->format, xembedr->length);
436 uint32_t *xembed = xcb_get_property_value(xembedr);
437 DLOG("xembed version = %d\n", xembed[0]);
438 DLOG("xembed flags = %d\n", xembed[1]);
439 map_it = ((xembed[1] & XEMBED_MAPPED) == XEMBED_MAPPED);
440 xe_version = xembed[0];
445 ELOG("Window %08x violates the XEMBED protocol, _XEMBED_INFO not set\n", client);
448 DLOG("X window %08x requested docking\n", client);
449 i3_output *walk, *output = NULL;
450 SLIST_FOREACH(walk, outputs, slist) {
453 if (config.tray_output) {
454 if ((strcasecmp(walk->name, config.tray_output) != 0) &&
455 (!walk->primary || strcasecmp("primary", config.tray_output) != 0))
459 DLOG("using output %s\n", walk->name);
462 if (output == NULL) {
463 ELOG("No output found\n");
466 xcb_reparent_window(xcb_connection,
469 output->rect.w - font.height - 2,
471 /* We reconfigure the window to use a reasonable size. The systray
472 * specification explicitly says:
473 * Tray icons may be assigned any size by the system tray, and
474 * should do their best to cope with any size effectively
476 mask = XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT;
477 values[0] = font.height;
478 values[1] = font.height;
479 xcb_configure_window(xcb_connection,
484 /* send the XEMBED_EMBEDDED_NOTIFY message */
485 void *event = scalloc(32);
486 xcb_client_message_event_t *ev = event;
487 ev->response_type = XCB_CLIENT_MESSAGE;
489 ev->type = atoms[_XEMBED];
491 ev->data.data32[0] = XCB_CURRENT_TIME;
492 ev->data.data32[1] = atoms[XEMBED_EMBEDDED_NOTIFY];
493 ev->data.data32[2] = output->bar;
494 ev->data.data32[3] = xe_version;
495 xcb_send_event(xcb_connection,
498 XCB_EVENT_MASK_NO_EVENT,
502 /* Put the client inside the save set. Upon termination (whether
503 * killed or normal exit does not matter) of i3bar, these clients
504 * will be correctly reparented to their most closest living
505 * ancestor. Without this, tray icons might die when i3bar
507 xcb_change_save_set(xcb_connection, XCB_SET_MODE_INSERT, client);
510 DLOG("Mapping dock client\n");
511 xcb_map_window(xcb_connection, client);
513 DLOG("Not mapping dock client yet\n");
515 trayclient *tc = smalloc(sizeof(trayclient));
518 tc->xe_version = xe_version;
519 TAILQ_INSERT_TAIL(output->trayclients, tc, tailq);
521 /* Trigger an update to copy the statusline text to the appropriate
523 configure_trayclients();
530 * Handles UnmapNotify events. These events happen when a tray window unmaps
531 * itself. We then update our data structure
534 static void handle_unmap_notify(xcb_unmap_notify_event_t* event) {
535 DLOG("UnmapNotify for window = %08x, event = %08x\n", event->window, event->event);
538 SLIST_FOREACH(walk, outputs, slist) {
541 DLOG("checking output %s\n", walk->name);
542 trayclient *trayclient;
543 TAILQ_FOREACH(trayclient, walk->trayclients, tailq) {
544 if (trayclient->win != event->window)
547 DLOG("Removing tray client with window ID %08x\n", event->window);
548 TAILQ_REMOVE(walk->trayclients, trayclient, tailq);
550 /* Trigger an update, we now have more space for the statusline */
551 configure_trayclients();
559 * Handle PropertyNotify messages. Currently only the _XEMBED_INFO property is
560 * handled, which tells us whether a dock client should be mapped or unmapped.
563 static void handle_property_notify(xcb_property_notify_event_t *event) {
564 DLOG("PropertyNotify\n");
565 if (event->atom == atoms[_XEMBED_INFO] &&
566 event->state == XCB_PROPERTY_NEW_VALUE) {
567 DLOG("xembed_info updated\n");
568 trayclient *trayclient = NULL, *walk;
570 SLIST_FOREACH(o_walk, outputs, slist) {
574 TAILQ_FOREACH(walk, o_walk->trayclients, tailq) {
575 if (walk->win != event->window)
585 ELOG("PropertyNotify received for unknown window %08x\n",
589 xcb_get_property_cookie_t xembedc;
590 xembedc = xcb_get_property_unchecked(xcb_connection,
594 XCB_GET_PROPERTY_TYPE_ANY,
598 xcb_get_property_reply_t *xembedr = xcb_get_property_reply(xcb_connection,
601 if (xembedr == NULL || xembedr->length == 0) {
602 DLOG("xembed_info unset\n");
606 DLOG("xembed format = %d, len = %d\n", xembedr->format, xembedr->length);
607 uint32_t *xembed = xcb_get_property_value(xembedr);
608 DLOG("xembed version = %d\n", xembed[0]);
609 DLOG("xembed flags = %d\n", xembed[1]);
610 bool map_it = ((xembed[1] & XEMBED_MAPPED) == XEMBED_MAPPED);
611 DLOG("map-state now %d\n", map_it);
612 if (trayclient->mapped && !map_it) {
613 /* need to unmap the window */
614 xcb_unmap_window(xcb_connection, trayclient->win);
615 trayclient->mapped = map_it;
616 configure_trayclients();
618 } else if (!trayclient->mapped && map_it) {
619 /* need to map the window */
620 xcb_map_window(xcb_connection, trayclient->win);
621 trayclient->mapped = map_it;
622 configure_trayclients();
630 * Handle ConfigureRequests by denying them and sending the client a
631 * ConfigureNotify with its actual size.
634 static void handle_configure_request(xcb_configure_request_event_t *event) {
635 DLOG("ConfigureRequest for window = %08x\n", event->window);
637 trayclient *trayclient;
639 SLIST_FOREACH(output, outputs, slist) {
644 TAILQ_FOREACH_REVERSE(trayclient, output->trayclients, tc_head, tailq) {
645 if (!trayclient->mapped)
649 if (trayclient->win != event->window)
652 xcb_rectangle_t rect;
653 rect.x = output->rect.w - (clients * (font.height + 2));
655 rect.width = font.height;
656 rect.height = font.height;
658 DLOG("This is a tray window. x = %d\n", rect.x);
659 fake_configure_notify(xcb_connection, rect, event->window, 0);
664 DLOG("WARNING: Could not find corresponding tray window.\n");
668 * This function is called immediately before the main loop locks. We flush xcb
669 * then (and only then)
672 void xcb_prep_cb(struct ev_loop *loop, ev_prepare *watcher, int revents) {
673 xcb_flush(xcb_connection);
677 * This function is called immediately after the main loop locks, so when one
678 * of the watchers registered an event.
679 * We check whether an X-Event arrived and handle it.
682 void xcb_chk_cb(struct ev_loop *loop, ev_check *watcher, int revents) {
683 xcb_generic_event_t *event;
685 if (xcb_connection_has_error(xcb_connection)) {
686 ELOG("X11 connection was closed unexpectedly - maybe your X server terminated / crashed?\n");
690 while ((event = xcb_poll_for_event(xcb_connection)) != NULL) {
691 switch (event->response_type & ~0x80) {
693 /* Expose-events happen, when the window needs to be redrawn */
696 case XCB_BUTTON_PRESS:
697 /* Button-press-events are mouse-buttons clicked on one of our bars */
698 handle_button((xcb_button_press_event_t*) event);
700 case XCB_CLIENT_MESSAGE:
701 /* Client messages are used for client-to-client communication, for
702 * example system tray widgets talk to us directly via client messages. */
703 handle_client_message((xcb_client_message_event_t*) event);
705 case XCB_UNMAP_NOTIFY:
706 case XCB_DESTROY_NOTIFY:
707 /* UnmapNotifies are received when a tray window unmaps itself */
708 handle_unmap_notify((xcb_unmap_notify_event_t*) event);
710 case XCB_PROPERTY_NOTIFY:
712 handle_property_notify((xcb_property_notify_event_t*) event);
714 case XCB_CONFIGURE_REQUEST:
715 /* ConfigureRequest, sent by a tray child */
716 handle_configure_request((xcb_configure_request_event_t*) event);
724 * Dummy Callback. We only need this, so that the Prepare- and Check-Watchers
728 void xcb_io_cb(struct ev_loop *loop, ev_io *watcher, int revents) {
732 * We need to bind to the modifier per XKB. Sadly, XCB does not implement this
735 void xkb_io_cb(struct ev_loop *loop, ev_io *watcher, int revents) {
739 DLOG("Got XKB-Event!\n");
741 while (XPending(xkb_dpy)) {
742 XNextEvent(xkb_dpy, (XEvent*)&ev);
744 if (ev.type != xkb_event_base) {
745 ELOG("No Xkb-Event!\n");
749 if (ev.any.xkb_type != XkbStateNotify) {
750 ELOG("No State Notify!\n");
754 unsigned int mods = ev.state.mods;
755 modstate = mods & config.modifier;
758 #define DLOGMOD(modmask, status, barfunc) \
762 DLOG("ShiftMask got " #status "!\n"); \
765 DLOG("ControlMask got " #status "!\n"); \
768 DLOG("Mod1Mask got " #status "!\n"); \
771 DLOG("Mod2Mask got " #status "!\n"); \
774 DLOG("Mod3Mask got " #status "!\n"); \
777 DLOG("Mod4Mask got " #status "!\n"); \
780 DLOG("Mod5Mask got " #status "!\n"); \
786 if (modstate != mod_pressed) {
788 DLOGMOD(config.modifier, released, hide_bars);
790 DLOGMOD(config.modifier, pressed, unhide_bars);
792 mod_pressed = modstate;
799 * Early initialization of the connection to X11: Everything which does not
800 * depend on 'config'.
803 char *init_xcb_early() {
804 /* FIXME: xcb_connect leaks Memory */
805 xcb_connection = xcb_connect(NULL, &screen);
806 if (xcb_connection_has_error(xcb_connection)) {
807 ELOG("Cannot open display\n");
810 conn = xcb_connection;
811 DLOG("Connected to xcb\n");
813 /* We have to request the atoms we need */
814 #define ATOM_DO(name) atom_cookies[name] = xcb_intern_atom(xcb_connection, 0, strlen(#name), #name);
815 #include "xcb_atoms.def"
817 xcb_screen = xcb_aux_get_screen(xcb_connection, screen);
818 xcb_root = xcb_screen->root;
820 /* We draw the statusline to a seperate pixmap, because it looks the same on all bars and
821 * this way, we can choose to crop it */
822 uint32_t mask = XCB_GC_FOREGROUND;
823 uint32_t vals[] = { colors.bar_bg, colors.bar_bg };
825 statusline_clear = xcb_generate_id(xcb_connection);
826 xcb_void_cookie_t clear_ctx_cookie = xcb_create_gc_checked(xcb_connection,
832 statusline_ctx = xcb_generate_id(xcb_connection);
833 xcb_void_cookie_t sl_ctx_cookie = xcb_create_gc_checked(xcb_connection,
839 statusline_pm = xcb_generate_id(xcb_connection);
840 xcb_void_cookie_t sl_pm_cookie = xcb_create_pixmap_checked(xcb_connection,
841 xcb_screen->root_depth,
844 xcb_screen->width_in_pixels,
845 xcb_screen->height_in_pixels);
848 /* The various Watchers to communicate with xcb */
849 xcb_io = smalloc(sizeof(ev_io));
850 xcb_prep = smalloc(sizeof(ev_prepare));
851 xcb_chk = smalloc(sizeof(ev_check));
853 ev_io_init(xcb_io, &xcb_io_cb, xcb_get_file_descriptor(xcb_connection), EV_READ);
854 ev_prepare_init(xcb_prep, &xcb_prep_cb);
855 ev_check_init(xcb_chk, &xcb_chk_cb);
857 ev_io_start(main_loop, xcb_io);
858 ev_prepare_start(main_loop, xcb_prep);
859 ev_check_start(main_loop, xcb_chk);
861 /* Now we get the atoms and save them in a nice data structure */
864 xcb_get_property_cookie_t path_cookie;
865 path_cookie = xcb_get_property_unchecked(xcb_connection,
868 atoms[I3_SOCKET_PATH],
869 XCB_GET_PROPERTY_TYPE_ANY,
872 /* We check, if i3 set its socket-path */
873 xcb_get_property_reply_t *path_reply = xcb_get_property_reply(xcb_connection,
878 int len = xcb_get_property_value_length(path_reply);
880 path = strndup(xcb_get_property_value(path_reply), len);
885 if (xcb_request_failed(sl_pm_cookie, "Could not allocate statusline-buffer") ||
886 xcb_request_failed(clear_ctx_cookie, "Could not allocate statusline-buffer-clearcontext") ||
887 xcb_request_failed(sl_ctx_cookie, "Could not allocate statusline-buffer-context")) {
895 * Initialization which depends on 'config' being usable. Called after the
896 * configuration has arrived.
899 void init_xcb_late(char *fontname) {
900 if (fontname == NULL)
901 fontname = "-misc-fixed-medium-r-normal--13-120-75-75-C-70-iso10646-1";
904 font = load_font(fontname, true);
906 DLOG("Calculated Font-height: %d\n", font.height);
908 xcb_flush(xcb_connection);
910 /* To grab modifiers without blocking other applications from receiving key-events
911 * involving that modifier, we sadly have to use xkb which is not yet fully supported
913 if (config.hide_on_modifier) {
914 int xkb_major, xkb_minor, xkb_errbase, xkb_err;
915 xkb_major = XkbMajorVersion;
916 xkb_minor = XkbMinorVersion;
918 xkb_dpy = XkbOpenDisplay(NULL,
925 if (xkb_dpy == NULL) {
930 if (fcntl(ConnectionNumber(xkb_dpy), F_SETFD, FD_CLOEXEC) == -1) {
931 ELOG("Could not set FD_CLOEXEC on xkbdpy: %s\n", strerror(errno));
936 if (!XkbQueryExtension(xkb_dpy, &i1, &xkb_event_base, &xkb_errbase, &xkb_major, &xkb_minor)) {
937 ELOG("XKB not supported by X-server!\n");
941 if (!XkbSelectEvents(xkb_dpy, XkbUseCoreKbd, XkbStateNotifyMask, XkbStateNotifyMask)) {
942 ELOG("Could not grab Key!\n");
946 xkb_io = smalloc(sizeof(ev_io));
947 ev_io_init(xkb_io, &xkb_io_cb, ConnectionNumber(xkb_dpy), EV_READ);
948 ev_io_start(main_loop, xkb_io);
954 * Initializes tray support by requesting the appropriate _NET_SYSTEM_TRAY atom
955 * for the X11 display we are running on, then acquiring the selection for this
956 * atom. Afterwards, tray clients will send ClientMessages to our window.
960 DLOG("Initializing system tray functionality\n");
961 /* request the tray manager atom for the X11 display we are running on */
962 char atomname[strlen("_NET_SYSTEM_TRAY_S") + 11];
963 snprintf(atomname, strlen("_NET_SYSTEM_TRAY_S") + 11, "_NET_SYSTEM_TRAY_S%d", screen);
964 xcb_intern_atom_cookie_t tray_cookie;
965 xcb_intern_atom_reply_t *tray_reply;
966 tray_cookie = xcb_intern_atom(xcb_connection, 0, strlen(atomname), atomname);
968 /* tray support: we need a window to own the selection */
969 xcb_window_t selwin = xcb_generate_id(xcb_connection);
970 uint32_t selmask = XCB_CW_OVERRIDE_REDIRECT;
971 uint32_t selval[] = { 1 };
972 xcb_create_window(xcb_connection,
973 xcb_screen->root_depth,
979 XCB_WINDOW_CLASS_INPUT_OUTPUT,
980 xcb_screen->root_visual,
984 uint32_t orientation = _NET_SYSTEM_TRAY_ORIENTATION_HORZ;
986 xcb_change_property(xcb_connection,
987 XCB_PROP_MODE_REPLACE,
989 atoms[_NET_SYSTEM_TRAY_ORIENTATION],
995 if (!(tray_reply = xcb_intern_atom_reply(xcb_connection, tray_cookie, NULL))) {
996 ELOG("Could not get atom %s\n", atomname);
1000 xcb_set_selection_owner(xcb_connection,
1005 /* Verify that we have the selection */
1006 xcb_get_selection_owner_cookie_t selcookie;
1007 xcb_get_selection_owner_reply_t *selreply;
1009 selcookie = xcb_get_selection_owner(xcb_connection, tray_reply->atom);
1010 if (!(selreply = xcb_get_selection_owner_reply(xcb_connection, selcookie, NULL))) {
1011 ELOG("Could not get selection owner for %s\n", atomname);
1015 if (selreply->owner != selwin) {
1016 ELOG("Could not set the %s selection. " \
1017 "Maybe another tray is already running?\n", atomname);
1018 /* NOTE that this error is not fatal. We just can’t provide tray
1024 /* Inform clients waiting for a new _NET_SYSTEM_TRAY that we are here */
1025 void *event = scalloc(32);
1026 xcb_client_message_event_t *ev = event;
1027 ev->response_type = XCB_CLIENT_MESSAGE;
1028 ev->window = xcb_root;
1029 ev->type = atoms[MANAGER];
1031 ev->data.data32[0] = XCB_CURRENT_TIME;
1032 ev->data.data32[1] = tray_reply->atom;
1033 ev->data.data32[2] = selwin;
1034 xcb_send_event(xcb_connection,
1037 XCB_EVENT_MASK_STRUCTURE_NOTIFY,
1044 * Cleanup the xcb-stuff.
1045 * Called once, before the program terminates.
1051 SLIST_FOREACH(o_walk, outputs, slist) {
1052 destroy_window(o_walk);
1053 FREE(o_walk->trayclients);
1054 FREE(o_walk->workspaces);
1057 FREE_SLIST(outputs, i3_output);
1060 xcb_flush(xcb_connection);
1061 xcb_disconnect(xcb_connection);
1063 ev_check_stop(main_loop, xcb_chk);
1064 ev_prepare_stop(main_loop, xcb_prep);
1065 ev_io_stop(main_loop, xcb_io);
1073 * Get the earlier requested atoms and save them in the prepared data structure
1077 xcb_intern_atom_reply_t *reply;
1078 #define ATOM_DO(name) reply = xcb_intern_atom_reply(xcb_connection, atom_cookies[name], NULL); \
1079 if (reply == NULL) { \
1080 ELOG("Could not get atom %s\n", #name); \
1081 exit(EXIT_FAILURE); \
1083 atoms[name] = reply->atom; \
1086 #include "xcb_atoms.def"
1087 DLOG("Got Atoms\n");
1091 * Reparents all tray clients of the specified output to the root window. This
1092 * is either used when shutting down, when an output appears (xrandr --output
1093 * VGA1 --off) or when the primary output changes.
1095 * Applications using the tray will start the protocol from the beginning again
1099 void kick_tray_clients(i3_output *output) {
1100 trayclient *trayclient;
1101 TAILQ_FOREACH(trayclient, output->trayclients, tailq) {
1102 /* Unmap, then reparent (to root) the tray client windows */
1103 xcb_unmap_window(xcb_connection, trayclient->win);
1104 xcb_reparent_window(xcb_connection,
1113 * Destroy the bar of the specified output
1116 void destroy_window(i3_output *output) {
1117 if (output == NULL) {
1120 if (output->bar == XCB_NONE) {
1124 kick_tray_clients(output);
1125 xcb_destroy_window(xcb_connection, output->bar);
1126 output->bar = XCB_NONE;
1130 * Reallocate the statusline-buffer
1133 void realloc_sl_buffer() {
1134 DLOG("Re-allocating statusline-buffer, statusline_width = %d, xcb_screen->width_in_pixels = %d\n",
1135 statusline_width, xcb_screen->width_in_pixels);
1136 xcb_free_pixmap(xcb_connection, statusline_pm);
1137 statusline_pm = xcb_generate_id(xcb_connection);
1138 xcb_void_cookie_t sl_pm_cookie = xcb_create_pixmap_checked(xcb_connection,
1139 xcb_screen->root_depth,
1142 MAX(xcb_screen->width_in_pixels, statusline_width),
1143 xcb_screen->height_in_pixels);
1145 uint32_t mask = XCB_GC_FOREGROUND;
1146 uint32_t vals[2] = { colors.bar_bg, colors.bar_bg };
1147 xcb_free_gc(xcb_connection, statusline_clear);
1148 statusline_clear = xcb_generate_id(xcb_connection);
1149 xcb_void_cookie_t clear_ctx_cookie = xcb_create_gc_checked(xcb_connection,
1155 mask |= XCB_GC_BACKGROUND;
1156 vals[0] = colors.bar_fg;
1157 statusline_ctx = xcb_generate_id(xcb_connection);
1158 xcb_free_gc(xcb_connection, statusline_ctx);
1159 xcb_void_cookie_t sl_ctx_cookie = xcb_create_gc_checked(xcb_connection,
1165 if (xcb_request_failed(sl_pm_cookie, "Could not allocate statusline-buffer") ||
1166 xcb_request_failed(clear_ctx_cookie, "Could not allocate statusline-buffer-clearcontext") ||
1167 xcb_request_failed(sl_ctx_cookie, "Could not allocate statusline-buffer-context")) {
1174 * Reconfigure all bars and create new bars for recently activated outputs
1177 void reconfig_windows() {
1180 static bool tray_configured = false;
1183 SLIST_FOREACH(walk, outputs, slist) {
1184 if (!walk->active) {
1185 /* If an output is not active, we destroy its bar */
1186 /* FIXME: Maybe we rather want to unmap? */
1187 DLOG("Destroying window for output %s\n", walk->name);
1188 destroy_window(walk);
1191 if (walk->bar == XCB_NONE) {
1192 DLOG("Creating Window for output %s\n", walk->name);
1194 walk->bar = xcb_generate_id(xcb_connection);
1195 walk->buffer = xcb_generate_id(xcb_connection);
1196 mask = XCB_CW_BACK_PIXEL | XCB_CW_OVERRIDE_REDIRECT | XCB_CW_EVENT_MASK;
1197 /* Black background */
1198 values[0] = colors.bar_bg;
1199 /* If hide_on_modifier is set, i3 is not supposed to manage our bar-windows */
1200 values[1] = config.hide_on_modifier;
1201 /* We enable the following EventMask fields:
1202 * EXPOSURE, to get expose events (we have to re-draw then)
1203 * SUBSTRUCTURE_REDIRECT, to get ConfigureRequests when the tray
1204 * child windows use ConfigureWindow
1205 * BUTTON_PRESS, to handle clicks on the workspace buttons
1207 values[2] = XCB_EVENT_MASK_EXPOSURE |
1208 XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT;
1209 if (!config.disable_ws) {
1210 values[2] |= XCB_EVENT_MASK_BUTTON_PRESS;
1212 xcb_void_cookie_t win_cookie = xcb_create_window_checked(xcb_connection,
1213 xcb_screen->root_depth,
1216 walk->rect.x, walk->rect.y + walk->rect.h - font.height - 6,
1217 walk->rect.w, font.height + 6,
1219 XCB_WINDOW_CLASS_INPUT_OUTPUT,
1220 xcb_screen->root_visual,
1224 /* The double-buffer we use to render stuff off-screen */
1225 xcb_void_cookie_t pm_cookie = xcb_create_pixmap_checked(xcb_connection,
1226 xcb_screen->root_depth,
1232 /* Set the WM_CLASS and WM_NAME (we don't need UTF-8) atoms */
1233 xcb_void_cookie_t class_cookie;
1234 class_cookie = xcb_change_property(xcb_connection,
1235 XCB_PROP_MODE_REPLACE,
1240 (strlen("i3bar") + 1) * 2,
1244 if (asprintf(&name, "i3bar for output %s", walk->name) == -1)
1245 err(EXIT_FAILURE, "asprintf()");
1246 xcb_void_cookie_t name_cookie;
1247 name_cookie = xcb_change_property(xcb_connection,
1248 XCB_PROP_MODE_REPLACE,
1257 /* We want dock-windows (for now). When override_redirect is set, i3 is ignoring
1259 xcb_void_cookie_t dock_cookie = xcb_change_property(xcb_connection,
1260 XCB_PROP_MODE_REPLACE,
1262 atoms[_NET_WM_WINDOW_TYPE],
1266 (unsigned char*) &atoms[_NET_WM_WINDOW_TYPE_DOCK]);
1268 /* We need to tell i3, where to reserve space for i3bar */
1269 /* left, right, top, bottom, left_start_y, left_end_y,
1270 * right_start_y, right_end_y, top_start_x, top_end_x, bottom_start_x,
1272 /* A local struct to save the strut_partial property */
1278 uint32_t left_start_y;
1279 uint32_t left_end_y;
1280 uint32_t right_start_y;
1281 uint32_t right_end_y;
1282 uint32_t top_start_x;
1284 uint32_t bottom_start_x;
1285 uint32_t bottom_end_x;
1286 } __attribute__((__packed__)) strut_partial = {0,};
1287 switch (config.position) {
1291 strut_partial.top = font.height + 6;
1292 strut_partial.top_start_x = walk->rect.x;
1293 strut_partial.top_end_x = walk->rect.x + walk->rect.w;
1296 strut_partial.bottom = font.height + 6;
1297 strut_partial.bottom_start_x = walk->rect.x;
1298 strut_partial.bottom_end_x = walk->rect.x + walk->rect.w;
1301 xcb_void_cookie_t strut_cookie = xcb_change_property(xcb_connection,
1302 XCB_PROP_MODE_REPLACE,
1304 atoms[_NET_WM_STRUT_PARTIAL],
1310 /* We also want a graphics-context for the bars (it defines the properties
1311 * with which we draw to them) */
1312 walk->bargc = xcb_generate_id(xcb_connection);
1313 xcb_void_cookie_t gc_cookie = xcb_create_gc_checked(xcb_connection,
1319 /* We finally map the bar (display it on screen), unless the modifier-switch is on */
1320 xcb_void_cookie_t map_cookie;
1321 if (!config.hide_on_modifier) {
1322 map_cookie = xcb_map_window_checked(xcb_connection, walk->bar);
1325 if (xcb_request_failed(win_cookie, "Could not create window") ||
1326 xcb_request_failed(pm_cookie, "Could not create pixmap") ||
1327 xcb_request_failed(dock_cookie, "Could not set dock mode") ||
1328 xcb_request_failed(class_cookie, "Could not set WM_CLASS") ||
1329 xcb_request_failed(name_cookie, "Could not set WM_NAME") ||
1330 xcb_request_failed(strut_cookie, "Could not set strut") ||
1331 xcb_request_failed(gc_cookie, "Could not create graphical context") ||
1332 (!config.hide_on_modifier && xcb_request_failed(map_cookie, "Could not map window"))) {
1336 if (!tray_configured &&
1337 (!config.tray_output ||
1338 strcasecmp("none", config.tray_output) != 0)) {
1340 tray_configured = true;
1343 /* We already have a bar, so we just reconfigure it */
1344 mask = XCB_CONFIG_WINDOW_X |
1345 XCB_CONFIG_WINDOW_Y |
1346 XCB_CONFIG_WINDOW_WIDTH |
1347 XCB_CONFIG_WINDOW_HEIGHT |
1348 XCB_CONFIG_WINDOW_STACK_MODE;
1349 values[0] = walk->rect.x;
1350 values[1] = walk->rect.y + walk->rect.h - font.height - 6;
1351 values[2] = walk->rect.w;
1352 values[3] = font.height + 6;
1353 values[4] = XCB_STACK_MODE_ABOVE;
1355 DLOG("Destroying buffer for output %s", walk->name);
1356 xcb_free_pixmap(xcb_connection, walk->buffer);
1358 DLOG("Reconfiguring Window for output %s to %d,%d\n", walk->name, values[0], values[1]);
1359 xcb_void_cookie_t cfg_cookie = xcb_configure_window_checked(xcb_connection,
1364 DLOG("Recreating buffer for output %s", walk->name);
1365 xcb_void_cookie_t pm_cookie = xcb_create_pixmap_checked(xcb_connection,
1366 xcb_screen->root_depth,
1372 if (xcb_request_failed(cfg_cookie, "Could not reconfigure window")) {
1375 if (xcb_request_failed(pm_cookie, "Could not create pixmap")) {
1383 * Render the bars, with buttons and statusline
1387 DLOG("Drawing Bars...\n");
1390 refresh_statusline();
1392 i3_output *outputs_walk;
1393 SLIST_FOREACH(outputs_walk, outputs, slist) {
1394 if (!outputs_walk->active) {
1395 DLOG("Output %s inactive, skipping...\n", outputs_walk->name);
1398 if (outputs_walk->bar == XCB_NONE) {
1399 /* Oh shit, an active output without an own bar. Create it now! */
1402 /* First things first: clear the backbuffer */
1403 uint32_t color = colors.bar_bg;
1404 xcb_change_gc(xcb_connection,
1405 outputs_walk->bargc,
1408 xcb_rectangle_t rect = { 0, 0, outputs_walk->rect.w, font.height + 6 };
1409 xcb_poly_fill_rectangle(xcb_connection,
1410 outputs_walk->buffer,
1411 outputs_walk->bargc,
1415 if (!TAILQ_EMPTY(&statusline_head)) {
1416 DLOG("Printing statusline!\n");
1418 /* Luckily we already prepared a seperate pixmap containing the rendered
1419 * statusline, we just have to copy the relevant parts to the relevant
1421 trayclient *trayclient;
1423 TAILQ_FOREACH(trayclient, outputs_walk->trayclients, tailq) {
1424 if (!trayclient->mapped)
1426 /* We assume the tray icons are quadratic (we use the font
1427 * *height* as *width* of the icons) because we configured them
1429 traypx += font.height + 2;
1431 /* Add 2px of padding if there are any tray icons */
1434 xcb_copy_area(xcb_connection,
1436 outputs_walk->buffer,
1437 outputs_walk->bargc,
1438 MAX(0, (int16_t)(statusline_width - outputs_walk->rect.w + 4)), 0,
1439 MAX(0, (int16_t)(outputs_walk->rect.w - statusline_width - traypx - 4)), 3,
1440 MIN(outputs_walk->rect.w - traypx - 4, statusline_width), font.height);
1443 if (config.disable_ws) {
1448 TAILQ_FOREACH(ws_walk, outputs_walk->workspaces, tailq) {
1449 DLOG("Drawing Button for WS %s at x = %d, len = %d\n", ws_walk->name, i, ws_walk->name_width);
1450 uint32_t fg_color = colors.inactive_ws_fg;
1451 uint32_t bg_color = colors.inactive_ws_bg;
1452 uint32_t border_color = colors.inactive_ws_border;
1453 if (ws_walk->visible) {
1454 if (!ws_walk->focused) {
1455 fg_color = colors.active_ws_fg;
1456 bg_color = colors.active_ws_bg;
1457 border_color = colors.active_ws_border;
1459 fg_color = colors.focus_ws_fg;
1460 bg_color = colors.focus_ws_bg;
1461 border_color = colors.focus_ws_border;
1464 if (ws_walk->urgent) {
1465 DLOG("WS %s is urgent!\n", ws_walk->name);
1466 fg_color = colors.urgent_ws_fg;
1467 bg_color = colors.urgent_ws_bg;
1468 border_color = colors.urgent_ws_border;
1469 /* The urgent-hint should get noticed, so we unhide the bars shortly */
1472 uint32_t mask = XCB_GC_FOREGROUND | XCB_GC_BACKGROUND;
1473 uint32_t vals_border[] = { border_color, border_color };
1474 xcb_change_gc(xcb_connection,
1475 outputs_walk->bargc,
1478 xcb_rectangle_t rect_border = { i, 0, ws_walk->name_width + 10, font.height + 4 };
1479 xcb_poly_fill_rectangle(xcb_connection,
1480 outputs_walk->buffer,
1481 outputs_walk->bargc,
1484 uint32_t vals[] = { bg_color, bg_color };
1485 xcb_change_gc(xcb_connection,
1486 outputs_walk->bargc,
1489 xcb_rectangle_t rect = { i + 1, 1, ws_walk->name_width + 8, font.height + 2 };
1490 xcb_poly_fill_rectangle(xcb_connection,
1491 outputs_walk->buffer,
1492 outputs_walk->bargc,
1495 set_font_colors(outputs_walk->bargc, fg_color, bg_color);
1496 draw_text((char*)ws_walk->ucs2_name, ws_walk->name_glyphs, true,
1497 outputs_walk->buffer, outputs_walk->bargc, i + 5, 2, ws_walk->name_width);
1498 i += 10 + ws_walk->name_width + 1;
1508 * Redraw the bars, i.e. simply copy the buffer to the barwindow
1511 void redraw_bars() {
1512 i3_output *outputs_walk;
1513 SLIST_FOREACH(outputs_walk, outputs, slist) {
1514 if (!outputs_walk->active) {
1517 xcb_copy_area(xcb_connection,
1518 outputs_walk->buffer,
1520 outputs_walk->bargc,
1523 outputs_walk->rect.w,
1524 outputs_walk->rect.h);
1525 xcb_flush(xcb_connection);