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 strcasecmp(walk->name, config.tray_output) != 0)
456 DLOG("using output %s\n", walk->name);
459 if (output == NULL) {
460 ELOG("No output found\n");
463 xcb_reparent_window(xcb_connection,
466 output->rect.w - font.height - 2,
468 /* We reconfigure the window to use a reasonable size. The systray
469 * specification explicitly says:
470 * Tray icons may be assigned any size by the system tray, and
471 * should do their best to cope with any size effectively
473 mask = XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT;
474 values[0] = font.height;
475 values[1] = font.height;
476 xcb_configure_window(xcb_connection,
481 /* send the XEMBED_EMBEDDED_NOTIFY message */
482 void *event = scalloc(32);
483 xcb_client_message_event_t *ev = event;
484 ev->response_type = XCB_CLIENT_MESSAGE;
486 ev->type = atoms[_XEMBED];
488 ev->data.data32[0] = XCB_CURRENT_TIME;
489 ev->data.data32[1] = atoms[XEMBED_EMBEDDED_NOTIFY];
490 ev->data.data32[2] = output->bar;
491 ev->data.data32[3] = xe_version;
492 xcb_send_event(xcb_connection,
495 XCB_EVENT_MASK_NO_EVENT,
499 /* Put the client inside the save set. Upon termination (whether
500 * killed or normal exit does not matter) of i3bar, these clients
501 * will be correctly reparented to their most closest living
502 * ancestor. Without this, tray icons might die when i3bar
504 xcb_change_save_set(xcb_connection, XCB_SET_MODE_INSERT, client);
507 DLOG("Mapping dock client\n");
508 xcb_map_window(xcb_connection, client);
510 DLOG("Not mapping dock client yet\n");
512 trayclient *tc = smalloc(sizeof(trayclient));
515 tc->xe_version = xe_version;
516 TAILQ_INSERT_TAIL(output->trayclients, tc, tailq);
518 /* Trigger an update to copy the statusline text to the appropriate
520 configure_trayclients();
527 * Handles UnmapNotify events. These events happen when a tray window unmaps
528 * itself. We then update our data structure
531 static void handle_unmap_notify(xcb_unmap_notify_event_t* event) {
532 DLOG("UnmapNotify for window = %08x, event = %08x\n", event->window, event->event);
535 SLIST_FOREACH(walk, outputs, slist) {
538 DLOG("checking output %s\n", walk->name);
539 trayclient *trayclient;
540 TAILQ_FOREACH(trayclient, walk->trayclients, tailq) {
541 if (trayclient->win != event->window)
544 DLOG("Removing tray client with window ID %08x\n", event->window);
545 TAILQ_REMOVE(walk->trayclients, trayclient, tailq);
547 /* Trigger an update, we now have more space for the statusline */
548 configure_trayclients();
556 * Handle PropertyNotify messages. Currently only the _XEMBED_INFO property is
557 * handled, which tells us whether a dock client should be mapped or unmapped.
560 static void handle_property_notify(xcb_property_notify_event_t *event) {
561 DLOG("PropertyNotify\n");
562 if (event->atom == atoms[_XEMBED_INFO] &&
563 event->state == XCB_PROPERTY_NEW_VALUE) {
564 DLOG("xembed_info updated\n");
565 trayclient *trayclient = NULL, *walk;
567 SLIST_FOREACH(o_walk, outputs, slist) {
571 TAILQ_FOREACH(walk, o_walk->trayclients, tailq) {
572 if (walk->win != event->window)
582 ELOG("PropertyNotify received for unknown window %08x\n",
586 xcb_get_property_cookie_t xembedc;
587 xembedc = xcb_get_property_unchecked(xcb_connection,
591 XCB_GET_PROPERTY_TYPE_ANY,
595 xcb_get_property_reply_t *xembedr = xcb_get_property_reply(xcb_connection,
598 if (xembedr == NULL || xembedr->length == 0) {
599 DLOG("xembed_info unset\n");
603 DLOG("xembed format = %d, len = %d\n", xembedr->format, xembedr->length);
604 uint32_t *xembed = xcb_get_property_value(xembedr);
605 DLOG("xembed version = %d\n", xembed[0]);
606 DLOG("xembed flags = %d\n", xembed[1]);
607 bool map_it = ((xembed[1] & XEMBED_MAPPED) == XEMBED_MAPPED);
608 DLOG("map-state now %d\n", map_it);
609 if (trayclient->mapped && !map_it) {
610 /* need to unmap the window */
611 xcb_unmap_window(xcb_connection, trayclient->win);
612 trayclient->mapped = map_it;
613 configure_trayclients();
615 } else if (!trayclient->mapped && map_it) {
616 /* need to map the window */
617 xcb_map_window(xcb_connection, trayclient->win);
618 trayclient->mapped = map_it;
619 configure_trayclients();
627 * Handle ConfigureRequests by denying them and sending the client a
628 * ConfigureNotify with its actual size.
631 static void handle_configure_request(xcb_configure_request_event_t *event) {
632 DLOG("ConfigureRequest for window = %08x\n", event->window);
634 trayclient *trayclient;
636 SLIST_FOREACH(output, outputs, slist) {
641 TAILQ_FOREACH_REVERSE(trayclient, output->trayclients, tc_head, tailq) {
642 if (!trayclient->mapped)
646 if (trayclient->win != event->window)
649 xcb_rectangle_t rect;
650 rect.x = output->rect.w - (clients * (font.height + 2));
652 rect.width = font.height;
653 rect.height = font.height;
655 DLOG("This is a tray window. x = %d\n", rect.x);
656 fake_configure_notify(xcb_connection, rect, event->window, 0);
661 DLOG("WARNING: Could not find corresponding tray window.\n");
665 * This function is called immediately before the main loop locks. We flush xcb
666 * then (and only then)
669 void xcb_prep_cb(struct ev_loop *loop, ev_prepare *watcher, int revents) {
670 xcb_flush(xcb_connection);
674 * This function is called immediately after the main loop locks, so when one
675 * of the watchers registered an event.
676 * We check whether an X-Event arrived and handle it.
679 void xcb_chk_cb(struct ev_loop *loop, ev_check *watcher, int revents) {
680 xcb_generic_event_t *event;
682 if (xcb_connection_has_error(xcb_connection)) {
683 ELOG("X11 connection was closed unexpectedly - maybe your X server terminated / crashed?\n");
687 while ((event = xcb_poll_for_event(xcb_connection)) != NULL) {
688 switch (event->response_type & ~0x80) {
690 /* Expose-events happen, when the window needs to be redrawn */
693 case XCB_BUTTON_PRESS:
694 /* Button-press-events are mouse-buttons clicked on one of our bars */
695 handle_button((xcb_button_press_event_t*) event);
697 case XCB_CLIENT_MESSAGE:
698 /* Client messages are used for client-to-client communication, for
699 * example system tray widgets talk to us directly via client messages. */
700 handle_client_message((xcb_client_message_event_t*) event);
702 case XCB_UNMAP_NOTIFY:
703 case XCB_DESTROY_NOTIFY:
704 /* UnmapNotifies are received when a tray window unmaps itself */
705 handle_unmap_notify((xcb_unmap_notify_event_t*) event);
707 case XCB_PROPERTY_NOTIFY:
709 handle_property_notify((xcb_property_notify_event_t*) event);
711 case XCB_CONFIGURE_REQUEST:
712 /* ConfigureRequest, sent by a tray child */
713 handle_configure_request((xcb_configure_request_event_t*) event);
721 * Dummy Callback. We only need this, so that the Prepare- and Check-Watchers
725 void xcb_io_cb(struct ev_loop *loop, ev_io *watcher, int revents) {
729 * We need to bind to the modifier per XKB. Sadly, XCB does not implement this
732 void xkb_io_cb(struct ev_loop *loop, ev_io *watcher, int revents) {
736 DLOG("Got XKB-Event!\n");
738 while (XPending(xkb_dpy)) {
739 XNextEvent(xkb_dpy, (XEvent*)&ev);
741 if (ev.type != xkb_event_base) {
742 ELOG("No Xkb-Event!\n");
746 if (ev.any.xkb_type != XkbStateNotify) {
747 ELOG("No State Notify!\n");
751 unsigned int mods = ev.state.mods;
752 modstate = mods & config.modifier;
755 #define DLOGMOD(modmask, status, barfunc) \
759 DLOG("ShiftMask got " #status "!\n"); \
762 DLOG("ControlMask got " #status "!\n"); \
765 DLOG("Mod1Mask got " #status "!\n"); \
768 DLOG("Mod2Mask got " #status "!\n"); \
771 DLOG("Mod3Mask got " #status "!\n"); \
774 DLOG("Mod4Mask got " #status "!\n"); \
777 DLOG("Mod5Mask got " #status "!\n"); \
783 if (modstate != mod_pressed) {
785 DLOGMOD(config.modifier, released, hide_bars);
787 DLOGMOD(config.modifier, pressed, unhide_bars);
789 mod_pressed = modstate;
796 * Early initialization of the connection to X11: Everything which does not
797 * depend on 'config'.
800 char *init_xcb_early() {
801 /* FIXME: xcb_connect leaks Memory */
802 xcb_connection = xcb_connect(NULL, &screen);
803 if (xcb_connection_has_error(xcb_connection)) {
804 ELOG("Cannot open display\n");
807 conn = xcb_connection;
808 DLOG("Connected to xcb\n");
810 /* We have to request the atoms we need */
811 #define ATOM_DO(name) atom_cookies[name] = xcb_intern_atom(xcb_connection, 0, strlen(#name), #name);
812 #include "xcb_atoms.def"
814 xcb_screen = xcb_aux_get_screen(xcb_connection, screen);
815 xcb_root = xcb_screen->root;
817 /* We draw the statusline to a seperate pixmap, because it looks the same on all bars and
818 * this way, we can choose to crop it */
819 uint32_t mask = XCB_GC_FOREGROUND;
820 uint32_t vals[] = { colors.bar_bg, colors.bar_bg };
822 statusline_clear = xcb_generate_id(xcb_connection);
823 xcb_void_cookie_t clear_ctx_cookie = xcb_create_gc_checked(xcb_connection,
829 statusline_ctx = xcb_generate_id(xcb_connection);
830 xcb_void_cookie_t sl_ctx_cookie = xcb_create_gc_checked(xcb_connection,
836 statusline_pm = xcb_generate_id(xcb_connection);
837 xcb_void_cookie_t sl_pm_cookie = xcb_create_pixmap_checked(xcb_connection,
838 xcb_screen->root_depth,
841 xcb_screen->width_in_pixels,
842 xcb_screen->height_in_pixels);
845 /* The various Watchers to communicate with xcb */
846 xcb_io = smalloc(sizeof(ev_io));
847 xcb_prep = smalloc(sizeof(ev_prepare));
848 xcb_chk = smalloc(sizeof(ev_check));
850 ev_io_init(xcb_io, &xcb_io_cb, xcb_get_file_descriptor(xcb_connection), EV_READ);
851 ev_prepare_init(xcb_prep, &xcb_prep_cb);
852 ev_check_init(xcb_chk, &xcb_chk_cb);
854 ev_io_start(main_loop, xcb_io);
855 ev_prepare_start(main_loop, xcb_prep);
856 ev_check_start(main_loop, xcb_chk);
858 /* Now we get the atoms and save them in a nice data structure */
861 xcb_get_property_cookie_t path_cookie;
862 path_cookie = xcb_get_property_unchecked(xcb_connection,
865 atoms[I3_SOCKET_PATH],
866 XCB_GET_PROPERTY_TYPE_ANY,
869 /* We check, if i3 set its socket-path */
870 xcb_get_property_reply_t *path_reply = xcb_get_property_reply(xcb_connection,
875 int len = xcb_get_property_value_length(path_reply);
877 path = strndup(xcb_get_property_value(path_reply), len);
882 if (xcb_request_failed(sl_pm_cookie, "Could not allocate statusline-buffer") ||
883 xcb_request_failed(clear_ctx_cookie, "Could not allocate statusline-buffer-clearcontext") ||
884 xcb_request_failed(sl_ctx_cookie, "Could not allocate statusline-buffer-context")) {
892 * Initialization which depends on 'config' being usable. Called after the
893 * configuration has arrived.
896 void init_xcb_late(char *fontname) {
897 if (fontname == NULL)
898 fontname = "-misc-fixed-medium-r-normal--13-120-75-75-C-70-iso10646-1";
901 font = load_font(fontname, true);
903 DLOG("Calculated Font-height: %d\n", font.height);
905 xcb_flush(xcb_connection);
907 /* To grab modifiers without blocking other applications from receiving key-events
908 * involving that modifier, we sadly have to use xkb which is not yet fully supported
910 if (config.hide_on_modifier) {
911 int xkb_major, xkb_minor, xkb_errbase, xkb_err;
912 xkb_major = XkbMajorVersion;
913 xkb_minor = XkbMinorVersion;
915 xkb_dpy = XkbOpenDisplay(NULL,
922 if (xkb_dpy == NULL) {
927 if (fcntl(ConnectionNumber(xkb_dpy), F_SETFD, FD_CLOEXEC) == -1) {
928 ELOG("Could not set FD_CLOEXEC on xkbdpy: %s\n", strerror(errno));
933 if (!XkbQueryExtension(xkb_dpy, &i1, &xkb_event_base, &xkb_errbase, &xkb_major, &xkb_minor)) {
934 ELOG("XKB not supported by X-server!\n");
938 if (!XkbSelectEvents(xkb_dpy, XkbUseCoreKbd, XkbStateNotifyMask, XkbStateNotifyMask)) {
939 ELOG("Could not grab Key!\n");
943 xkb_io = smalloc(sizeof(ev_io));
944 ev_io_init(xkb_io, &xkb_io_cb, ConnectionNumber(xkb_dpy), EV_READ);
945 ev_io_start(main_loop, xkb_io);
951 * Initializes tray support by requesting the appropriate _NET_SYSTEM_TRAY atom
952 * for the X11 display we are running on, then acquiring the selection for this
953 * atom. Afterwards, tray clients will send ClientMessages to our window.
957 DLOG("Initializing system tray functionality\n");
958 /* request the tray manager atom for the X11 display we are running on */
959 char atomname[strlen("_NET_SYSTEM_TRAY_S") + 11];
960 snprintf(atomname, strlen("_NET_SYSTEM_TRAY_S") + 11, "_NET_SYSTEM_TRAY_S%d", screen);
961 xcb_intern_atom_cookie_t tray_cookie;
962 xcb_intern_atom_reply_t *tray_reply;
963 tray_cookie = xcb_intern_atom(xcb_connection, 0, strlen(atomname), atomname);
965 /* tray support: we need a window to own the selection */
966 xcb_window_t selwin = xcb_generate_id(xcb_connection);
967 uint32_t selmask = XCB_CW_OVERRIDE_REDIRECT;
968 uint32_t selval[] = { 1 };
969 xcb_create_window(xcb_connection,
970 xcb_screen->root_depth,
976 XCB_WINDOW_CLASS_INPUT_OUTPUT,
977 xcb_screen->root_visual,
981 uint32_t orientation = _NET_SYSTEM_TRAY_ORIENTATION_HORZ;
983 xcb_change_property(xcb_connection,
984 XCB_PROP_MODE_REPLACE,
986 atoms[_NET_SYSTEM_TRAY_ORIENTATION],
992 if (!(tray_reply = xcb_intern_atom_reply(xcb_connection, tray_cookie, NULL))) {
993 ELOG("Could not get atom %s\n", atomname);
997 xcb_set_selection_owner(xcb_connection,
1002 /* Verify that we have the selection */
1003 xcb_get_selection_owner_cookie_t selcookie;
1004 xcb_get_selection_owner_reply_t *selreply;
1006 selcookie = xcb_get_selection_owner(xcb_connection, tray_reply->atom);
1007 if (!(selreply = xcb_get_selection_owner_reply(xcb_connection, selcookie, NULL))) {
1008 ELOG("Could not get selection owner for %s\n", atomname);
1012 if (selreply->owner != selwin) {
1013 ELOG("Could not set the %s selection. " \
1014 "Maybe another tray is already running?\n", atomname);
1015 /* NOTE that this error is not fatal. We just can’t provide tray
1021 /* Inform clients waiting for a new _NET_SYSTEM_TRAY that we are here */
1022 void *event = scalloc(32);
1023 xcb_client_message_event_t *ev = event;
1024 ev->response_type = XCB_CLIENT_MESSAGE;
1025 ev->window = xcb_root;
1026 ev->type = atoms[MANAGER];
1028 ev->data.data32[0] = XCB_CURRENT_TIME;
1029 ev->data.data32[1] = tray_reply->atom;
1030 ev->data.data32[2] = selwin;
1031 xcb_send_event(xcb_connection,
1034 XCB_EVENT_MASK_STRUCTURE_NOTIFY,
1041 * Cleanup the xcb-stuff.
1042 * Called once, before the program terminates.
1047 trayclient *trayclient;
1049 SLIST_FOREACH(o_walk, outputs, slist) {
1050 TAILQ_FOREACH(trayclient, o_walk->trayclients, tailq) {
1051 /* Unmap, then reparent (to root) the tray client windows */
1052 xcb_unmap_window(xcb_connection, trayclient->win);
1053 xcb_reparent_window(xcb_connection,
1059 destroy_window(o_walk);
1060 FREE(o_walk->trayclients);
1061 FREE(o_walk->workspaces);
1064 FREE_SLIST(outputs, i3_output);
1067 xcb_flush(xcb_connection);
1068 xcb_disconnect(xcb_connection);
1070 ev_check_stop(main_loop, xcb_chk);
1071 ev_prepare_stop(main_loop, xcb_prep);
1072 ev_io_stop(main_loop, xcb_io);
1080 * Get the earlier requested atoms and save them in the prepared data structure
1084 xcb_intern_atom_reply_t *reply;
1085 #define ATOM_DO(name) reply = xcb_intern_atom_reply(xcb_connection, atom_cookies[name], NULL); \
1086 if (reply == NULL) { \
1087 ELOG("Could not get atom %s\n", #name); \
1088 exit(EXIT_FAILURE); \
1090 atoms[name] = reply->atom; \
1093 #include "xcb_atoms.def"
1094 DLOG("Got Atoms\n");
1098 * Destroy the bar of the specified output
1101 void destroy_window(i3_output *output) {
1102 if (output == NULL) {
1105 if (output->bar == XCB_NONE) {
1108 xcb_destroy_window(xcb_connection, output->bar);
1109 output->bar = XCB_NONE;
1113 * Reallocate the statusline-buffer
1116 void realloc_sl_buffer() {
1117 DLOG("Re-allocating statusline-buffer, statusline_width = %d, xcb_screen->width_in_pixels = %d\n",
1118 statusline_width, xcb_screen->width_in_pixels);
1119 xcb_free_pixmap(xcb_connection, statusline_pm);
1120 statusline_pm = xcb_generate_id(xcb_connection);
1121 xcb_void_cookie_t sl_pm_cookie = xcb_create_pixmap_checked(xcb_connection,
1122 xcb_screen->root_depth,
1125 MAX(xcb_screen->width_in_pixels, statusline_width),
1126 xcb_screen->height_in_pixels);
1128 uint32_t mask = XCB_GC_FOREGROUND;
1129 uint32_t vals[2] = { colors.bar_bg, colors.bar_bg };
1130 xcb_free_gc(xcb_connection, statusline_clear);
1131 statusline_clear = xcb_generate_id(xcb_connection);
1132 xcb_void_cookie_t clear_ctx_cookie = xcb_create_gc_checked(xcb_connection,
1138 mask |= XCB_GC_BACKGROUND;
1139 vals[0] = colors.bar_fg;
1140 statusline_ctx = xcb_generate_id(xcb_connection);
1141 xcb_free_gc(xcb_connection, statusline_ctx);
1142 xcb_void_cookie_t sl_ctx_cookie = xcb_create_gc_checked(xcb_connection,
1148 if (xcb_request_failed(sl_pm_cookie, "Could not allocate statusline-buffer") ||
1149 xcb_request_failed(clear_ctx_cookie, "Could not allocate statusline-buffer-clearcontext") ||
1150 xcb_request_failed(sl_ctx_cookie, "Could not allocate statusline-buffer-context")) {
1157 * Reconfigure all bars and create new bars for recently activated outputs
1160 void reconfig_windows() {
1163 static bool tray_configured = false;
1166 SLIST_FOREACH(walk, outputs, slist) {
1167 if (!walk->active) {
1168 /* If an output is not active, we destroy its bar */
1169 /* FIXME: Maybe we rather want to unmap? */
1170 DLOG("Destroying window for output %s\n", walk->name);
1171 destroy_window(walk);
1174 if (walk->bar == XCB_NONE) {
1175 DLOG("Creating Window for output %s\n", walk->name);
1177 walk->bar = xcb_generate_id(xcb_connection);
1178 walk->buffer = xcb_generate_id(xcb_connection);
1179 mask = XCB_CW_BACK_PIXEL | XCB_CW_OVERRIDE_REDIRECT | XCB_CW_EVENT_MASK;
1180 /* Black background */
1181 values[0] = colors.bar_bg;
1182 /* If hide_on_modifier is set, i3 is not supposed to manage our bar-windows */
1183 values[1] = config.hide_on_modifier;
1184 /* We enable the following EventMask fields:
1185 * EXPOSURE, to get expose events (we have to re-draw then)
1186 * SUBSTRUCTURE_REDIRECT, to get ConfigureRequests when the tray
1187 * child windows use ConfigureWindow
1188 * BUTTON_PRESS, to handle clicks on the workspace buttons
1190 values[2] = XCB_EVENT_MASK_EXPOSURE |
1191 XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT;
1192 if (!config.disable_ws) {
1193 values[2] |= XCB_EVENT_MASK_BUTTON_PRESS;
1195 xcb_void_cookie_t win_cookie = xcb_create_window_checked(xcb_connection,
1196 xcb_screen->root_depth,
1199 walk->rect.x, walk->rect.y + walk->rect.h - font.height - 6,
1200 walk->rect.w, font.height + 6,
1202 XCB_WINDOW_CLASS_INPUT_OUTPUT,
1203 xcb_screen->root_visual,
1207 /* The double-buffer we use to render stuff off-screen */
1208 xcb_void_cookie_t pm_cookie = xcb_create_pixmap_checked(xcb_connection,
1209 xcb_screen->root_depth,
1215 /* Set the WM_CLASS and WM_NAME (we don't need UTF-8) atoms */
1216 xcb_void_cookie_t class_cookie;
1217 class_cookie = xcb_change_property(xcb_connection,
1218 XCB_PROP_MODE_REPLACE,
1223 (strlen("i3bar") + 1) * 2,
1227 if (asprintf(&name, "i3bar for output %s", walk->name) == -1)
1228 err(EXIT_FAILURE, "asprintf()");
1229 xcb_void_cookie_t name_cookie;
1230 name_cookie = xcb_change_property(xcb_connection,
1231 XCB_PROP_MODE_REPLACE,
1240 /* We want dock-windows (for now). When override_redirect is set, i3 is ignoring
1242 xcb_void_cookie_t dock_cookie = xcb_change_property(xcb_connection,
1243 XCB_PROP_MODE_REPLACE,
1245 atoms[_NET_WM_WINDOW_TYPE],
1249 (unsigned char*) &atoms[_NET_WM_WINDOW_TYPE_DOCK]);
1251 /* We need to tell i3, where to reserve space for i3bar */
1252 /* left, right, top, bottom, left_start_y, left_end_y,
1253 * right_start_y, right_end_y, top_start_x, top_end_x, bottom_start_x,
1255 /* A local struct to save the strut_partial property */
1261 uint32_t left_start_y;
1262 uint32_t left_end_y;
1263 uint32_t right_start_y;
1264 uint32_t right_end_y;
1265 uint32_t top_start_x;
1267 uint32_t bottom_start_x;
1268 uint32_t bottom_end_x;
1269 } __attribute__((__packed__)) strut_partial = {0,};
1270 switch (config.position) {
1274 strut_partial.top = font.height + 6;
1275 strut_partial.top_start_x = walk->rect.x;
1276 strut_partial.top_end_x = walk->rect.x + walk->rect.w;
1279 strut_partial.bottom = font.height + 6;
1280 strut_partial.bottom_start_x = walk->rect.x;
1281 strut_partial.bottom_end_x = walk->rect.x + walk->rect.w;
1284 xcb_void_cookie_t strut_cookie = xcb_change_property(xcb_connection,
1285 XCB_PROP_MODE_REPLACE,
1287 atoms[_NET_WM_STRUT_PARTIAL],
1293 /* We also want a graphics-context for the bars (it defines the properties
1294 * with which we draw to them) */
1295 walk->bargc = xcb_generate_id(xcb_connection);
1296 xcb_void_cookie_t gc_cookie = xcb_create_gc_checked(xcb_connection,
1302 /* We finally map the bar (display it on screen), unless the modifier-switch is on */
1303 xcb_void_cookie_t map_cookie;
1304 if (!config.hide_on_modifier) {
1305 map_cookie = xcb_map_window_checked(xcb_connection, walk->bar);
1308 if (xcb_request_failed(win_cookie, "Could not create window") ||
1309 xcb_request_failed(pm_cookie, "Could not create pixmap") ||
1310 xcb_request_failed(dock_cookie, "Could not set dock mode") ||
1311 xcb_request_failed(class_cookie, "Could not set WM_CLASS") ||
1312 xcb_request_failed(name_cookie, "Could not set WM_NAME") ||
1313 xcb_request_failed(strut_cookie, "Could not set strut") ||
1314 xcb_request_failed(gc_cookie, "Could not create graphical context") ||
1315 (!config.hide_on_modifier && xcb_request_failed(map_cookie, "Could not map window"))) {
1319 if (!tray_configured &&
1320 (!config.tray_output ||
1321 strcasecmp("none", config.tray_output) != 0)) {
1323 tray_configured = true;
1326 /* We already have a bar, so we just reconfigure it */
1327 mask = XCB_CONFIG_WINDOW_X |
1328 XCB_CONFIG_WINDOW_Y |
1329 XCB_CONFIG_WINDOW_WIDTH |
1330 XCB_CONFIG_WINDOW_HEIGHT |
1331 XCB_CONFIG_WINDOW_STACK_MODE;
1332 values[0] = walk->rect.x;
1333 values[1] = walk->rect.y + walk->rect.h - font.height - 6;
1334 values[2] = walk->rect.w;
1335 values[3] = font.height + 6;
1336 values[4] = XCB_STACK_MODE_ABOVE;
1338 DLOG("Destroying buffer for output %s", walk->name);
1339 xcb_free_pixmap(xcb_connection, walk->buffer);
1341 DLOG("Reconfiguring Window for output %s to %d,%d\n", walk->name, values[0], values[1]);
1342 xcb_void_cookie_t cfg_cookie = xcb_configure_window_checked(xcb_connection,
1347 DLOG("Recreating buffer for output %s", walk->name);
1348 xcb_void_cookie_t pm_cookie = xcb_create_pixmap_checked(xcb_connection,
1349 xcb_screen->root_depth,
1355 if (xcb_request_failed(cfg_cookie, "Could not reconfigure window")) {
1358 if (xcb_request_failed(pm_cookie, "Could not create pixmap")) {
1366 * Render the bars, with buttons and statusline
1370 DLOG("Drawing Bars...\n");
1373 refresh_statusline();
1375 i3_output *outputs_walk;
1376 SLIST_FOREACH(outputs_walk, outputs, slist) {
1377 if (!outputs_walk->active) {
1378 DLOG("Output %s inactive, skipping...\n", outputs_walk->name);
1381 if (outputs_walk->bar == XCB_NONE) {
1382 /* Oh shit, an active output without an own bar. Create it now! */
1385 /* First things first: clear the backbuffer */
1386 uint32_t color = colors.bar_bg;
1387 xcb_change_gc(xcb_connection,
1388 outputs_walk->bargc,
1391 xcb_rectangle_t rect = { 0, 0, outputs_walk->rect.w, font.height + 6 };
1392 xcb_poly_fill_rectangle(xcb_connection,
1393 outputs_walk->buffer,
1394 outputs_walk->bargc,
1398 if (!TAILQ_EMPTY(&statusline_head)) {
1399 DLOG("Printing statusline!\n");
1401 /* Luckily we already prepared a seperate pixmap containing the rendered
1402 * statusline, we just have to copy the relevant parts to the relevant
1404 trayclient *trayclient;
1406 TAILQ_FOREACH(trayclient, outputs_walk->trayclients, tailq) {
1407 if (!trayclient->mapped)
1409 /* We assume the tray icons are quadratic (we use the font
1410 * *height* as *width* of the icons) because we configured them
1412 traypx += font.height + 2;
1414 /* Add 2px of padding if there are any tray icons */
1417 xcb_copy_area(xcb_connection,
1419 outputs_walk->buffer,
1420 outputs_walk->bargc,
1421 MAX(0, (int16_t)(statusline_width - outputs_walk->rect.w + 4)), 0,
1422 MAX(0, (int16_t)(outputs_walk->rect.w - statusline_width - traypx - 4)), 3,
1423 MIN(outputs_walk->rect.w - traypx - 4, statusline_width), font.height);
1426 if (config.disable_ws) {
1431 TAILQ_FOREACH(ws_walk, outputs_walk->workspaces, tailq) {
1432 DLOG("Drawing Button for WS %s at x = %d, len = %d\n", ws_walk->name, i, ws_walk->name_width);
1433 uint32_t fg_color = colors.inactive_ws_fg;
1434 uint32_t bg_color = colors.inactive_ws_bg;
1435 uint32_t border_color = colors.inactive_ws_border;
1436 if (ws_walk->visible) {
1437 if (!ws_walk->focused) {
1438 fg_color = colors.active_ws_fg;
1439 bg_color = colors.active_ws_bg;
1440 border_color = colors.active_ws_border;
1442 fg_color = colors.focus_ws_fg;
1443 bg_color = colors.focus_ws_bg;
1444 border_color = colors.focus_ws_border;
1447 if (ws_walk->urgent) {
1448 DLOG("WS %s is urgent!\n", ws_walk->name);
1449 fg_color = colors.urgent_ws_fg;
1450 bg_color = colors.urgent_ws_bg;
1451 border_color = colors.urgent_ws_border;
1452 /* The urgent-hint should get noticed, so we unhide the bars shortly */
1455 uint32_t mask = XCB_GC_FOREGROUND | XCB_GC_BACKGROUND;
1456 uint32_t vals_border[] = { border_color, border_color };
1457 xcb_change_gc(xcb_connection,
1458 outputs_walk->bargc,
1461 xcb_rectangle_t rect_border = { i, 0, ws_walk->name_width + 10, font.height + 4 };
1462 xcb_poly_fill_rectangle(xcb_connection,
1463 outputs_walk->buffer,
1464 outputs_walk->bargc,
1467 uint32_t vals[] = { bg_color, bg_color };
1468 xcb_change_gc(xcb_connection,
1469 outputs_walk->bargc,
1472 xcb_rectangle_t rect = { i + 1, 1, ws_walk->name_width + 8, font.height + 2 };
1473 xcb_poly_fill_rectangle(xcb_connection,
1474 outputs_walk->buffer,
1475 outputs_walk->bargc,
1478 set_font_colors(outputs_walk->bargc, fg_color, bg_color);
1479 draw_text((char*)ws_walk->ucs2_name, ws_walk->name_glyphs, true,
1480 outputs_walk->buffer, outputs_walk->bargc, i + 5, 2, ws_walk->name_width);
1481 i += 10 + ws_walk->name_width + 1;
1491 * Redraw the bars, i.e. simply copy the buffer to the barwindow
1494 void redraw_bars() {
1495 i3_output *outputs_walk;
1496 SLIST_FOREACH(outputs_walk, outputs, slist) {
1497 if (!outputs_walk->active) {
1500 xcb_copy_area(xcb_connection,
1501 outputs_walk->buffer,
1503 outputs_walk->bargc,
1506 outputs_walk->rect.w,
1507 outputs_walk->rect.h);
1508 xcb_flush(xcb_connection);