2 * vim:ts=4:sw=4:expandtab
4 * i3bar - an xcb-based status- and ws-bar for i3
5 * © 2010 Axel Wagner and contributors (see also: LICENSE)
7 * xcb.c: Communicating with X
14 #include <xcb/xproto.h>
15 #include <xcb/xcb_aux.h>
16 #include <xcb/xcb_cursor.h>
30 #include <X11/XKBlib.h>
31 #include <X11/extensions/XKB.h>
33 #ifdef I3_ASAN_ENABLED
34 #include <sanitizer/lsan_interface.h>
39 /** This is the equivalent of XC_left_ptr. I’m not sure why xcb doesn’t have a
40 * constant for that. */
41 #define XCB_CURSOR_LEFT_PTR 68
43 /* We save the atoms in an easy to access array, indexed by an enum */
45 #define ATOM_DO(name) name,
46 #include "xcb_atoms.def"
50 xcb_intern_atom_cookie_t atom_cookies[NUM_ATOMS];
51 xcb_atom_t atoms[NUM_ATOMS];
53 /* Variables, that are the same for all functions at all times */
54 xcb_connection_t *xcb_connection;
56 xcb_screen_t *root_screen;
57 xcb_window_t xcb_root;
58 static xcb_cursor_t cursor;
60 /* selection window for tray support */
61 static xcb_window_t selwin = XCB_NONE;
62 static xcb_intern_atom_reply_t *tray_reply = NULL;
64 /* This is needed for integration with libi3 */
65 xcb_connection_t *conn;
67 /* The font we'll use */
70 /* Icon size (based on font size) */
73 xcb_visualtype_t *visual_type;
75 xcb_colormap_t colormap;
77 /* Overall height of the bar (based on font size) */
80 /* These are only relevant for XKB, which we only need for grabbing modifiers */
84 /* Event watchers, to interact with the user */
90 /* The name of current binding mode */
93 /* Indicates whether a new binding mode was recently activated */
94 bool activated_mode = false;
96 /* The parsed colors */
101 color_t focus_bar_fg;
102 color_t focus_bar_bg;
103 color_t focus_sep_fg;
104 color_t active_ws_fg;
105 color_t active_ws_bg;
106 color_t active_ws_border;
107 color_t inactive_ws_fg;
108 color_t inactive_ws_bg;
109 color_t inactive_ws_border;
110 color_t urgent_ws_bg;
111 color_t urgent_ws_fg;
112 color_t urgent_ws_border;
115 color_t focus_ws_border;
116 color_t binding_mode_bg;
117 color_t binding_mode_fg;
118 color_t binding_mode_border;
120 struct xcb_colors_t colors;
122 /* Horizontal offset between a workspace label and button borders */
123 static const int ws_hoff_px = 4;
125 /* Vertical offset between a workspace label and button borders */
126 static const int ws_voff_px = 3;
128 /* Offset between two workspace buttons */
129 static const int ws_spacing_px = 1;
131 /* Offset between the statusline and 1) workspace buttons on the left
132 * 2) the tray or screen edge on the right */
133 static const int sb_hoff_px = 4;
135 /* Additional offset between the tray and the statusline, if the tray is not empty */
136 static const int tray_loff_px = 2;
138 /* Vertical offset between the bar and a separator */
139 static const int sep_voff_px = 4;
141 int _xcb_request_failed(xcb_void_cookie_t cookie, char *err_msg, int line) {
142 xcb_generic_error_t *err;
143 if ((err = xcb_request_check(xcb_connection, cookie)) != NULL) {
144 fprintf(stderr, "[%s:%d] ERROR: %s. X Error Code: %d\n", __FILE__, line, err_msg, err->error_code);
145 return err->error_code;
150 uint32_t get_sep_offset(struct status_block *block) {
151 if (!block->no_separator && block->sep_block_width > 0)
152 return block->sep_block_width / 2 + block->sep_block_width % 2;
156 int get_tray_width(struct tc_head *trayclients) {
157 trayclient *trayclient;
159 TAILQ_FOREACH_REVERSE(trayclient, trayclients, tc_head, tailq) {
160 if (!trayclient->mapped)
162 tray_width += icon_size + logical_px(config.tray_padding);
165 tray_width += logical_px(tray_loff_px);
170 * Draws a separator for the given block if necessary.
173 static void draw_separator(i3_output *output, uint32_t x, struct status_block *block, bool use_focus_colors) {
174 color_t sep_fg = (use_focus_colors ? colors.focus_sep_fg : colors.sep_fg);
175 color_t bar_bg = (use_focus_colors ? colors.focus_bar_bg : colors.bar_bg);
177 uint32_t sep_offset = get_sep_offset(block);
178 if (TAILQ_NEXT(block, blocks) == NULL || sep_offset == 0)
181 uint32_t center_x = x - sep_offset;
182 if (config.separator_symbol == NULL) {
183 /* Draw a classic one pixel, vertical separator. */
184 draw_util_rectangle(&output->statusline_buffer, sep_fg,
186 logical_px(sep_voff_px),
188 bar_height - 2 * logical_px(sep_voff_px));
190 /* Draw a custom separator. */
191 uint32_t separator_x = MAX(x - block->sep_block_width, center_x - separator_symbol_width / 2);
192 draw_util_text(config.separator_symbol, &output->statusline_buffer, sep_fg, bar_bg,
193 separator_x, logical_px(ws_voff_px), x - separator_x);
197 uint32_t predict_statusline_length(bool use_short_text) {
199 struct status_block *block;
201 TAILQ_FOREACH(block, &statusline_head, blocks) {
202 i3String *text = block->full_text;
203 struct status_block_render_desc *render = &block->full_render;
204 if (use_short_text && block->short_text != NULL) {
205 text = block->short_text;
206 render = &block->short_render;
209 if (i3string_get_num_bytes(text) == 0)
212 render->width = predict_text_width(text);
214 render->width += logical_px(2);
216 /* Compute offset and append for text aligment in min_width. */
217 if (block->min_width <= render->width) {
218 render->x_offset = 0;
219 render->x_append = 0;
221 uint32_t padding_width = block->min_width - render->width;
222 switch (block->align) {
224 render->x_append = padding_width;
227 render->x_offset = padding_width;
230 render->x_offset = padding_width / 2;
231 render->x_append = padding_width / 2 + padding_width % 2;
236 width += render->width + render->x_offset + render->x_append;
238 /* If this is not the last block, add some pixels for a separator. */
239 if (TAILQ_NEXT(block, blocks) != NULL)
240 width += block->sep_block_width;
247 * Redraws the statusline to the output's statusline_buffer
249 void draw_statusline(i3_output *output, uint32_t clip_left, bool use_focus_colors, bool use_short_text) {
250 struct status_block *block;
252 color_t bar_color = (use_focus_colors ? colors.focus_bar_bg : colors.bar_bg);
253 draw_util_clear_surface(&output->statusline_buffer, bar_color);
255 /* Use unsigned integer wraparound to clip off the left side.
256 * For example, if clip_left is 75, then x will start at the very large
257 * number INT_MAX-75, which is way outside the surface dimensions. Drawing
258 * to that x position is a no-op which XCB and Cairo safely ignore. Once x moves
259 * up by 75 and goes past INT_MAX, it will wrap around again to 0, and we start
260 * actually rendering content to the surface. */
261 uint32_t x = 0 - clip_left;
263 /* Draw the text of each block */
264 TAILQ_FOREACH(block, &statusline_head, blocks) {
265 i3String *text = block->full_text;
266 struct status_block_render_desc *render = &block->full_render;
267 if (use_short_text && block->short_text != NULL) {
268 text = block->short_text;
269 render = &block->short_render;
272 if (i3string_get_num_bytes(text) == 0)
277 fg_color = colors.urgent_ws_fg;
278 } else if (block->color) {
279 fg_color = draw_util_hex_to_color(block->color);
280 } else if (use_focus_colors) {
281 fg_color = colors.focus_bar_fg;
283 fg_color = colors.bar_fg;
286 color_t bg_color = bar_color;
288 int border_width = (block->border) ? logical_px(1) : 0;
289 int full_render_width = render->width + render->x_offset + render->x_append;
290 if (block->border || block->background || block->urgent) {
291 /* Let's determine the colors first. */
292 color_t border_color = bar_color;
294 border_color = colors.urgent_ws_border;
295 bg_color = colors.urgent_ws_bg;
298 border_color = draw_util_hex_to_color(block->border);
299 if (block->background)
300 bg_color = draw_util_hex_to_color(block->background);
303 /* Draw the border. */
304 draw_util_rectangle(&output->statusline_buffer, border_color,
307 bar_height - logical_px(2));
309 /* Draw the background. */
310 draw_util_rectangle(&output->statusline_buffer, bg_color,
312 logical_px(1) + border_width,
313 full_render_width - 2 * border_width,
314 bar_height - 2 * border_width - logical_px(2));
317 draw_util_text(text, &output->statusline_buffer, fg_color, bg_color,
318 x + render->x_offset + border_width, logical_px(ws_voff_px),
319 render->width - 2 * border_width);
320 x += full_render_width;
322 /* If this is not the last block, draw a separator. */
323 if (TAILQ_NEXT(block, blocks) != NULL) {
324 x += block->sep_block_width;
325 draw_separator(output, x, block, use_focus_colors);
331 * Hides all bars (unmaps them)
334 void hide_bars(void) {
335 if ((config.hide_on_modifier == M_DOCK) || (config.hidden_state == S_SHOW && config.hide_on_modifier == M_HIDE)) {
340 SLIST_FOREACH(walk, outputs, slist) {
344 xcb_unmap_window(xcb_connection, walk->bar.id);
350 * Unhides all bars (maps them)
353 void unhide_bars(void) {
354 if (config.hide_on_modifier != M_HIDE) {
359 xcb_void_cookie_t cookie;
365 SLIST_FOREACH(walk, outputs, slist) {
366 if (walk->bar.id == XCB_NONE) {
369 mask = XCB_CONFIG_WINDOW_X |
370 XCB_CONFIG_WINDOW_Y |
371 XCB_CONFIG_WINDOW_WIDTH |
372 XCB_CONFIG_WINDOW_HEIGHT |
373 XCB_CONFIG_WINDOW_STACK_MODE;
374 values[0] = walk->rect.x;
375 if (config.position == POS_TOP)
376 values[1] = walk->rect.y;
378 values[1] = walk->rect.y + walk->rect.h - bar_height;
379 values[2] = walk->rect.w;
380 values[3] = bar_height;
381 values[4] = XCB_STACK_MODE_ABOVE;
382 DLOG("Reconfiguring window for output %s to %d,%d\n", walk->name, values[0], values[1]);
383 cookie = xcb_configure_window_checked(xcb_connection,
388 if (xcb_request_failed(cookie, "Could not reconfigure window")) {
391 xcb_map_window(xcb_connection, walk->bar.id);
396 * Parse the colors into a format that we can use
399 void init_colors(const struct xcb_color_strings_t *new_colors) {
400 #define PARSE_COLOR(name, def) \
402 colors.name = draw_util_hex_to_color(new_colors->name ? new_colors->name : def); \
404 PARSE_COLOR(bar_fg, "#FFFFFF");
405 PARSE_COLOR(bar_bg, "#000000");
406 PARSE_COLOR(sep_fg, "#666666");
407 PARSE_COLOR(active_ws_fg, "#FFFFFF");
408 PARSE_COLOR(active_ws_bg, "#333333");
409 PARSE_COLOR(active_ws_border, "#333333");
410 PARSE_COLOR(inactive_ws_fg, "#888888");
411 PARSE_COLOR(inactive_ws_bg, "#222222");
412 PARSE_COLOR(inactive_ws_border, "#333333");
413 PARSE_COLOR(urgent_ws_fg, "#FFFFFF");
414 PARSE_COLOR(urgent_ws_bg, "#900000");
415 PARSE_COLOR(urgent_ws_border, "#2f343a");
416 PARSE_COLOR(focus_ws_fg, "#FFFFFF");
417 PARSE_COLOR(focus_ws_bg, "#285577");
418 PARSE_COLOR(focus_ws_border, "#4c7899");
421 #define PARSE_COLOR_FALLBACK(name, fallback) \
423 colors.name = new_colors->name ? draw_util_hex_to_color(new_colors->name) : colors.fallback; \
426 /* For the binding mode indicator colors, we don't hardcode a default.
427 * Instead, we fall back to urgent_ws_* colors. */
428 PARSE_COLOR_FALLBACK(binding_mode_fg, urgent_ws_fg);
429 PARSE_COLOR_FALLBACK(binding_mode_bg, urgent_ws_bg);
430 PARSE_COLOR_FALLBACK(binding_mode_border, urgent_ws_border);
432 /* Similarly, for unspecified focused bar colors, we fall back to the
433 * regular bar colors. */
434 PARSE_COLOR_FALLBACK(focus_bar_fg, bar_fg);
435 PARSE_COLOR_FALLBACK(focus_bar_bg, bar_bg);
436 PARSE_COLOR_FALLBACK(focus_sep_fg, sep_fg);
437 #undef PARSE_COLOR_FALLBACK
440 xcb_flush(xcb_connection);
444 * Handle a button press event (i.e. a mouse click on one of our bars).
445 * We determine, whether the click occurred on a workspace button or if the scroll-
446 * wheel was used and change the workspace appropriately
449 void handle_button(xcb_button_press_event_t *event) {
450 /* Determine, which bar was clicked */
452 xcb_window_t bar = event->event;
453 SLIST_FOREACH(walk, outputs, slist) {
454 if (walk->bar.id == bar) {
460 DLOG("Unknown bar clicked!\n");
464 int32_t x = event->event_x >= 0 ? event->event_x : 0;
466 DLOG("Got button %d\n", event->detail);
468 int workspace_width = 0;
469 i3_ws *cur_ws = NULL, *clicked_ws = NULL, *ws_walk;
471 TAILQ_FOREACH(ws_walk, walk->workspaces, tailq) {
472 int w = 2 * logical_px(ws_hoff_px) + 2 * logical_px(1) + ws_walk->name_width;
473 if (x >= workspace_width && x <= workspace_width + w)
474 clicked_ws = ws_walk;
475 if (ws_walk->visible)
477 workspace_width += w;
478 if (TAILQ_NEXT(ws_walk, tailq) != NULL)
479 workspace_width += logical_px(ws_spacing_px);
482 if (x > workspace_width && child_want_click_events()) {
483 /* If the child asked for click events,
484 * check if a status block has been clicked. */
485 int tray_width = get_tray_width(walk->trayclients);
486 int block_x = 0, last_block_x;
487 int offset = walk->rect.w - walk->statusline_width - tray_width - logical_px(sb_hoff_px);
488 int32_t statusline_x = x - offset;
490 if (statusline_x >= 0 && statusline_x < walk->statusline_width) {
491 struct status_block *block;
492 int sep_offset_remainder = 0;
494 TAILQ_FOREACH(block, &statusline_head, blocks) {
495 i3String *text = block->full_text;
496 struct status_block_render_desc *render = &block->full_render;
497 if (walk->statusline_short_text && block->short_text != NULL) {
498 text = block->short_text;
499 render = &block->short_render;
502 if (i3string_get_num_bytes(text) == 0)
505 last_block_x = block_x;
506 block_x += render->width + render->x_offset + render->x_append + get_sep_offset(block) + sep_offset_remainder;
508 if (statusline_x <= block_x && statusline_x >= last_block_x) {
509 send_block_clicked(event->detail, block->name, block->instance, event->root_x, event->root_y);
513 sep_offset_remainder = block->sep_block_width - get_sep_offset(block);
518 /* If a custom command was specified for this mouse button, it overrides
519 * the default behavior. */
521 TAILQ_FOREACH(binding, &(config.bindings), bindings) {
522 if (binding->input_code != event->detail)
525 i3_send_msg(I3_IPC_MESSAGE_TYPE_COMMAND, binding->command);
529 if (cur_ws == NULL) {
530 DLOG("No workspace active?\n");
533 switch (event->detail) {
534 case XCB_BUTTON_SCROLL_UP:
535 /* Mouse wheel up. We select the previous ws, if any.
536 * If there is no more workspace, don’t even send the workspace
537 * command, otherwise (with workspace auto_back_and_forth) we’d end
538 * up on the wrong workspace. */
539 if (cur_ws == TAILQ_FIRST(walk->workspaces))
542 cur_ws = TAILQ_PREV(cur_ws, ws_head, tailq);
544 case XCB_BUTTON_SCROLL_DOWN:
545 /* Mouse wheel down. We select the next ws, if any.
546 * If there is no more workspace, don’t even send the workspace
547 * command, otherwise (with workspace auto_back_and_forth) we’d end
548 * up on the wrong workspace. */
549 if (cur_ws == TAILQ_LAST(walk->workspaces, ws_head))
552 cur_ws = TAILQ_NEXT(cur_ws, tailq);
557 /* if no workspace was clicked, focus our currently visible
558 * workspace if it is not already focused */
559 if (cur_ws == NULL) {
560 TAILQ_FOREACH(cur_ws, walk->workspaces, tailq) {
561 if (cur_ws->visible && !cur_ws->focused)
566 /* if there is nothing to focus, we are done */
575 /* To properly handle workspace names with double quotes in them, we need
576 * to escape the double quotes. Unfortunately, that’s rather ugly in C: We
577 * first count the number of double quotes, then we allocate a large enough
578 * buffer, then we copy character by character. */
581 const char *utf8_name = cur_ws->canonical_name;
582 for (const char *walk = utf8_name; *walk != '\0'; walk++) {
583 if (*walk == '"' || *walk == '\\')
585 /* While we’re looping through the name anyway, we can save one
590 const size_t len = namelen + strlen("workspace \"\"") + 1;
591 char *buffer = scalloc(len + num_quotes, 1);
592 strncpy(buffer, "workspace \"", strlen("workspace \""));
593 size_t inpos, outpos;
594 for (inpos = 0, outpos = strlen("workspace \"");
597 if (utf8_name[inpos] == '"' || utf8_name[inpos] == '\\') {
598 buffer[outpos] = '\\';
601 buffer[outpos] = utf8_name[inpos];
603 buffer[outpos] = '"';
604 i3_send_msg(I3_IPC_MESSAGE_TYPE_COMMAND, buffer);
609 * Handle visibility notifications: when none of the bars are visible, e.g.
610 * if windows are in fullscreen on each output, suspend the child process.
613 static void handle_visibility_notify(xcb_visibility_notify_event_t *event) {
614 bool visible = (event->state != XCB_VISIBILITY_FULLY_OBSCURED);
618 SLIST_FOREACH(output, outputs, slist) {
619 if (!output->active) {
622 if (output->bar.id == event->window) {
623 if (output->visible == visible) {
626 output->visible = visible;
628 num_visible += output->visible;
631 if (num_visible == 0) {
633 } else if (num_visible == visible) {
634 /* Wake the child only when transitioning from 0 to 1 visible bar.
635 * We cannot transition from 0 to 2 or more visible bars at once since
636 * visibility events are delivered to each window separately */
642 * Adjusts the size of the tray window and alignment of the tray clients by
643 * configuring their respective x coordinates. To be called when mapping or
644 * unmapping a tray client window.
647 static void configure_trayclients(void) {
648 trayclient *trayclient;
650 SLIST_FOREACH(output, outputs, slist) {
655 TAILQ_FOREACH_REVERSE(trayclient, output->trayclients, tc_head, tailq) {
656 if (!trayclient->mapped)
660 DLOG("Configuring tray window %08x to x=%d\n",
661 trayclient->win, output->rect.w - (clients * (icon_size + logical_px(config.tray_padding))));
662 uint32_t x = output->rect.w - (clients * (icon_size + logical_px(config.tray_padding)));
663 xcb_configure_window(xcb_connection,
672 * Handles ClientMessages (messages sent from another client directly to us).
674 * At the moment, only the tray window will receive client messages. All
675 * supported client messages currently are _NET_SYSTEM_TRAY_OPCODE.
678 static void handle_client_message(xcb_client_message_event_t *event) {
679 if (event->type == atoms[_NET_SYSTEM_TRAY_OPCODE] &&
680 event->format == 32) {
681 DLOG("_NET_SYSTEM_TRAY_OPCODE received\n");
682 /* event->data.data32[0] is the timestamp */
683 uint32_t op = event->data.data32[1];
686 if (op == SYSTEM_TRAY_REQUEST_DOCK) {
687 xcb_window_t client = event->data.data32[2];
689 mask = XCB_CW_EVENT_MASK;
691 /* Needed to get the most recent value of XEMBED_MAPPED. */
692 values[0] = XCB_EVENT_MASK_PROPERTY_CHANGE;
693 /* Needed for UnmapNotify events. */
694 values[0] |= XCB_EVENT_MASK_STRUCTURE_NOTIFY;
695 /* Needed because some tray applications (e.g., VLC) use
696 * override_redirect which causes no ConfigureRequest to be sent. */
697 values[0] |= XCB_EVENT_MASK_RESIZE_REDIRECT;
699 xcb_change_window_attributes(xcb_connection, client, mask, values);
701 /* Request the _XEMBED_INFO property. The XEMBED specification
702 * (which is referred by the tray specification) says this *has* to
703 * be set, but VLC does not set it… */
706 xcb_get_property_cookie_t xembedc;
707 xcb_generic_error_t *error;
708 xembedc = xcb_get_property(xcb_connection,
712 XCB_GET_PROPERTY_TYPE_ANY,
716 xcb_get_property_reply_t *xembedr = xcb_get_property_reply(xcb_connection,
720 ELOG("Error getting _XEMBED_INFO property: error_code %d\n",
725 if (xembedr != NULL && xembedr->length != 0) {
726 DLOG("xembed format = %d, len = %d\n", xembedr->format, xembedr->length);
727 uint32_t *xembed = xcb_get_property_value(xembedr);
728 DLOG("xembed version = %d\n", xembed[0]);
729 DLOG("xembed flags = %d\n", xembed[1]);
730 map_it = ((xembed[1] & XEMBED_MAPPED) == XEMBED_MAPPED);
731 xe_version = xembed[0];
736 ELOG("Window %08x violates the XEMBED protocol, _XEMBED_INFO not set\n", client);
739 DLOG("X window %08x requested docking\n", client);
740 i3_output *output = NULL;
741 i3_output *walk = NULL;
742 tray_output_t *tray_output = NULL;
743 /* We need to iterate through the tray_output assignments first in
744 * order to prioritize them. Otherwise, if this bar manages two
745 * outputs and both are assigned as tray_output as well, the first
746 * output in our list would receive the tray rather than the first
747 * one defined via tray_output. */
748 TAILQ_FOREACH(tray_output, &(config.tray_outputs), tray_outputs) {
749 SLIST_FOREACH(walk, outputs, slist) {
753 if (strcasecmp(walk->name, tray_output->output) == 0) {
754 DLOG("Found tray_output assignment for output %s.\n", walk->name);
759 if (walk->primary && strcasecmp("primary", tray_output->output) == 0) {
760 DLOG("Found tray_output assignment on primary output %s.\n", walk->name);
766 /* If we found an output, we're done. */
771 /* If no tray_output has been specified, we fall back to the first
772 * available output. */
773 if (output == NULL && TAILQ_EMPTY(&(config.tray_outputs))) {
774 SLIST_FOREACH(walk, outputs, slist) {
777 DLOG("Falling back to output %s because no primary output is configured\n", walk->name);
783 if (output == NULL) {
784 ELOG("No output found\n");
788 xcb_void_cookie_t rcookie = xcb_reparent_window(xcb_connection,
791 output->rect.w - icon_size - logical_px(config.tray_padding),
792 logical_px(config.tray_padding));
793 if (xcb_request_failed(rcookie, "Could not reparent window. Maybe it is using an incorrect depth/visual?"))
796 /* We reconfigure the window to use a reasonable size. The systray
797 * specification explicitly says:
798 * Tray icons may be assigned any size by the system tray, and
799 * should do their best to cope with any size effectively
801 mask = XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT;
802 values[0] = icon_size;
803 values[1] = icon_size;
804 xcb_configure_window(xcb_connection,
809 /* send the XEMBED_EMBEDDED_NOTIFY message */
810 void *event = scalloc(32, 1);
811 xcb_client_message_event_t *ev = event;
812 ev->response_type = XCB_CLIENT_MESSAGE;
814 ev->type = atoms[_XEMBED];
816 ev->data.data32[0] = XCB_CURRENT_TIME;
817 ev->data.data32[1] = XEMBED_EMBEDDED_NOTIFY;
818 ev->data.data32[2] = output->bar.id;
819 ev->data.data32[3] = xe_version;
820 xcb_send_event(xcb_connection,
823 XCB_EVENT_MASK_NO_EVENT,
827 /* Put the client inside the save set. Upon termination (whether
828 * killed or normal exit does not matter) of i3bar, these clients
829 * will be correctly reparented to their most closest living
830 * ancestor. Without this, tray icons might die when i3bar
832 xcb_change_save_set(xcb_connection, XCB_SET_MODE_INSERT, client);
834 trayclient *tc = smalloc(sizeof(trayclient));
836 tc->xe_version = xe_version;
838 TAILQ_INSERT_TAIL(output->trayclients, tc, tailq);
841 DLOG("Mapping dock client\n");
842 xcb_map_window(xcb_connection, client);
844 DLOG("Not mapping dock client yet\n");
846 /* Trigger an update to copy the statusline text to the appropriate
848 configure_trayclients();
855 * Handles DestroyNotify events by removing the tray client from the data
856 * structure. According to the XEmbed protocol, this is one way for a tray
857 * client to finish the protocol. After this event is received, there is no
858 * further interaction with the tray client.
860 * See: http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
863 static void handle_destroy_notify(xcb_destroy_notify_event_t *event) {
864 DLOG("DestroyNotify for window = %08x, event = %08x\n", event->window, event->event);
867 SLIST_FOREACH(walk, outputs, slist) {
870 DLOG("checking output %s\n", walk->name);
871 trayclient *trayclient;
872 TAILQ_FOREACH(trayclient, walk->trayclients, tailq) {
873 if (trayclient->win != event->window) {
877 DLOG("Removing tray client with window ID %08x\n", event->window);
878 TAILQ_REMOVE(walk->trayclients, trayclient, tailq);
881 /* Trigger an update, we now have more space for the statusline */
882 configure_trayclients();
890 * Handles MapNotify events. These events happen when a tray client shows its
891 * window. We respond by realigning the tray clients.
894 static void handle_map_notify(xcb_map_notify_event_t *event) {
895 DLOG("MapNotify for window = %08x, event = %08x\n", event->window, event->event);
898 SLIST_FOREACH(walk, outputs, slist) {
901 DLOG("checking output %s\n", walk->name);
902 trayclient *trayclient;
903 TAILQ_FOREACH(trayclient, walk->trayclients, tailq) {
904 if (trayclient->win != event->window)
907 DLOG("Tray client mapped (window ID %08x). Adjusting tray.\n", event->window);
908 trayclient->mapped = true;
910 /* Trigger an update, we now have more space for the statusline */
911 configure_trayclients();
918 * Handles UnmapNotify events. These events happen when a tray client hides its
919 * window. We respond by realigning the tray clients.
922 static void handle_unmap_notify(xcb_unmap_notify_event_t *event) {
923 DLOG("UnmapNotify for window = %08x, event = %08x\n", event->window, event->event);
926 SLIST_FOREACH(walk, outputs, slist) {
929 DLOG("checking output %s\n", walk->name);
930 trayclient *trayclient;
931 TAILQ_FOREACH(trayclient, walk->trayclients, tailq) {
932 if (trayclient->win != event->window)
935 DLOG("Tray client unmapped (window ID %08x). Adjusting tray.\n", event->window);
936 trayclient->mapped = false;
938 /* Trigger an update, we now have more space for the statusline */
939 configure_trayclients();
947 * Handle PropertyNotify messages. Currently only the _XEMBED_INFO property is
948 * handled, which tells us whether a dock client should be mapped or unmapped.
951 static void handle_property_notify(xcb_property_notify_event_t *event) {
952 DLOG("PropertyNotify\n");
953 if (event->atom == atoms[_XEMBED_INFO] &&
954 event->state == XCB_PROPERTY_NEW_VALUE) {
955 DLOG("xembed_info updated\n");
956 trayclient *trayclient = NULL, *walk;
958 SLIST_FOREACH(o_walk, outputs, slist) {
962 TAILQ_FOREACH(walk, o_walk->trayclients, tailq) {
963 if (walk->win != event->window)
973 ELOG("PropertyNotify received for unknown window %08x\n",
977 xcb_get_property_cookie_t xembedc;
978 xembedc = xcb_get_property_unchecked(xcb_connection,
982 XCB_GET_PROPERTY_TYPE_ANY,
986 xcb_get_property_reply_t *xembedr = xcb_get_property_reply(xcb_connection,
989 if (xembedr == NULL || xembedr->length == 0) {
990 DLOG("xembed_info unset\n");
994 DLOG("xembed format = %d, len = %d\n", xembedr->format, xembedr->length);
995 uint32_t *xembed = xcb_get_property_value(xembedr);
996 DLOG("xembed version = %d\n", xembed[0]);
997 DLOG("xembed flags = %d\n", xembed[1]);
998 bool map_it = ((xembed[1] & XEMBED_MAPPED) == XEMBED_MAPPED);
999 DLOG("map state now %d\n", map_it);
1000 if (trayclient->mapped && !map_it) {
1001 /* need to unmap the window */
1002 xcb_unmap_window(xcb_connection, trayclient->win);
1003 } else if (!trayclient->mapped && map_it) {
1004 /* need to map the window */
1005 xcb_map_window(xcb_connection, trayclient->win);
1012 * If a tray client attempts to change its size we deny the request and respond
1013 * by telling it its actual size.
1016 static void handle_configuration_change(xcb_window_t window) {
1017 trayclient *trayclient;
1019 SLIST_FOREACH(output, outputs, slist) {
1020 if (!output->active)
1024 TAILQ_FOREACH_REVERSE(trayclient, output->trayclients, tc_head, tailq) {
1025 if (!trayclient->mapped)
1029 if (trayclient->win != window)
1032 xcb_rectangle_t rect;
1033 rect.x = output->rect.w - (clients * (icon_size + logical_px(config.tray_padding)));
1034 rect.y = logical_px(config.tray_padding);
1035 rect.width = icon_size;
1036 rect.height = icon_size;
1038 DLOG("This is a tray window. x = %d\n", rect.x);
1039 fake_configure_notify(xcb_connection, rect, window, 0);
1044 DLOG("WARNING: Could not find corresponding tray window.\n");
1047 static void handle_configure_request(xcb_configure_request_event_t *event) {
1048 DLOG("ConfigureRequest for window = %08x\n", event->window);
1049 handle_configuration_change(event->window);
1052 static void handle_resize_request(xcb_resize_request_event_t *event) {
1053 DLOG("ResizeRequest for window = %08x\n", event->window);
1054 handle_configuration_change(event->window);
1058 * This function is called immediately before the main loop locks. We flush xcb
1059 * then (and only then)
1062 void xcb_prep_cb(struct ev_loop *loop, ev_prepare *watcher, int revents) {
1063 xcb_flush(xcb_connection);
1067 * This function is called immediately after the main loop locks, so when one
1068 * of the watchers registered an event.
1069 * We check whether an X-Event arrived and handle it.
1072 void xcb_chk_cb(struct ev_loop *loop, ev_check *watcher, int revents) {
1073 xcb_generic_event_t *event;
1075 if (xcb_connection_has_error(xcb_connection)) {
1076 ELOG("X11 connection was closed unexpectedly - maybe your X server terminated / crashed?\n");
1077 #ifdef I3_ASAN_ENABLED
1078 __lsan_do_leak_check();
1083 while ((event = xcb_poll_for_event(xcb_connection)) != NULL) {
1084 if (event->response_type == 0) {
1085 xcb_generic_error_t *error = (xcb_generic_error_t *)event;
1086 DLOG("Received X11 error, sequence 0x%x, error_code = %d\n", error->sequence, error->error_code);
1091 int type = (event->response_type & ~0x80);
1093 if (type == xkb_base && xkb_base > -1) {
1094 DLOG("received an xkb event\n");
1096 xcb_xkb_state_notify_event_t *state = (xcb_xkb_state_notify_event_t *)event;
1097 if (state->xkbType == XCB_XKB_STATE_NOTIFY && config.modifier != XCB_NONE) {
1098 int modstate = state->mods & config.modifier;
1100 #define DLOGMOD(modmask, status) \
1102 switch (modmask) { \
1104 DLOG("ShiftMask got " #status "!\n"); \
1107 DLOG("ControlMask got " #status "!\n"); \
1110 DLOG("Mod1Mask got " #status "!\n"); \
1113 DLOG("Mod2Mask got " #status "!\n"); \
1116 DLOG("Mod3Mask got " #status "!\n"); \
1119 DLOG("Mod4Mask got " #status "!\n"); \
1122 DLOG("Mod5Mask got " #status "!\n"); \
1127 if (modstate != mod_pressed) {
1128 if (modstate == 0) {
1129 DLOGMOD(config.modifier, released);
1130 if (!activated_mode)
1133 DLOGMOD(config.modifier, pressed);
1134 activated_mode = false;
1137 mod_pressed = modstate;
1147 case XCB_VISIBILITY_NOTIFY:
1148 /* Visibility change: a bar is [un]obscured by other window */
1149 handle_visibility_notify((xcb_visibility_notify_event_t *)event);
1152 if (((xcb_expose_event_t *)event)->count == 0) {
1153 /* Expose-events happen, when the window needs to be redrawn */
1158 case XCB_BUTTON_PRESS:
1159 /* Button press events are mouse buttons clicked on one of our bars */
1160 handle_button((xcb_button_press_event_t *)event);
1162 case XCB_CLIENT_MESSAGE:
1163 /* Client messages are used for client-to-client communication, for
1164 * example system tray widgets talk to us directly via client messages. */
1165 handle_client_message((xcb_client_message_event_t *)event);
1167 case XCB_DESTROY_NOTIFY:
1168 /* DestroyNotify signifies the end of the XEmbed protocol */
1169 handle_destroy_notify((xcb_destroy_notify_event_t *)event);
1171 case XCB_UNMAP_NOTIFY:
1172 /* UnmapNotify is received when a tray client hides its window. */
1173 handle_unmap_notify((xcb_unmap_notify_event_t *)event);
1175 case XCB_MAP_NOTIFY:
1176 handle_map_notify((xcb_map_notify_event_t *)event);
1178 case XCB_PROPERTY_NOTIFY:
1179 /* PropertyNotify */
1180 handle_property_notify((xcb_property_notify_event_t *)event);
1182 case XCB_CONFIGURE_REQUEST:
1183 /* ConfigureRequest, sent by a tray child */
1184 handle_configure_request((xcb_configure_request_event_t *)event);
1185 case XCB_RESIZE_REQUEST:
1186 /* ResizeRequest sent by a tray child using override_redirect. */
1187 handle_resize_request((xcb_resize_request_event_t *)event);
1195 * Dummy callback. We only need this, so that the prepare and check watchers
1199 void xcb_io_cb(struct ev_loop *loop, ev_io *watcher, int revents) {
1203 * Early initialization of the connection to X11: Everything which does not
1204 * depend on 'config'.
1207 char *init_xcb_early() {
1208 /* FIXME: xcb_connect leaks memory */
1209 xcb_connection = xcb_connect(NULL, &screen);
1210 if (xcb_connection_has_error(xcb_connection)) {
1211 ELOG("Cannot open display\n");
1214 conn = xcb_connection;
1215 DLOG("Connected to xcb\n");
1217 /* We have to request the atoms we need */
1218 #define ATOM_DO(name) atom_cookies[name] = xcb_intern_atom(xcb_connection, 0, strlen(#name), #name);
1219 #include "xcb_atoms.def"
1221 root_screen = xcb_aux_get_screen(xcb_connection, screen);
1222 xcb_root = root_screen->root;
1224 depth = root_screen->root_depth;
1225 colormap = root_screen->default_colormap;
1226 visual_type = get_visualtype(root_screen);
1228 xcb_cursor_context_t *cursor_ctx;
1229 if (xcb_cursor_context_new(conn, root_screen, &cursor_ctx) == 0) {
1230 cursor = xcb_cursor_load_cursor(cursor_ctx, "left_ptr");
1231 xcb_cursor_context_free(cursor_ctx);
1233 cursor = xcb_generate_id(xcb_connection);
1234 i3Font cursor_font = load_font("cursor", false);
1235 xcb_create_glyph_cursor(
1238 cursor_font.specific.xcb.id,
1239 cursor_font.specific.xcb.id,
1240 XCB_CURSOR_LEFT_PTR,
1241 XCB_CURSOR_LEFT_PTR + 1,
1243 65535, 65535, 65535);
1246 /* The various watchers to communicate with xcb */
1247 xcb_io = smalloc(sizeof(ev_io));
1248 xcb_prep = smalloc(sizeof(ev_prepare));
1249 xcb_chk = smalloc(sizeof(ev_check));
1251 ev_io_init(xcb_io, &xcb_io_cb, xcb_get_file_descriptor(xcb_connection), EV_READ);
1252 ev_prepare_init(xcb_prep, &xcb_prep_cb);
1253 ev_check_init(xcb_chk, &xcb_chk_cb);
1255 ev_io_start(main_loop, xcb_io);
1256 ev_prepare_start(main_loop, xcb_prep);
1257 ev_check_start(main_loop, xcb_chk);
1259 /* Now we get the atoms and save them in a nice data structure */
1262 char *path = root_atom_contents("I3_SOCKET_PATH", xcb_connection, screen);
1268 * Register for xkb keyevents. To grab modifiers without blocking other applications from receiving key events
1269 * involving that modifier, we sadly have to use xkb which is not yet fully supported
1273 void register_xkb_keyevents() {
1274 const xcb_query_extension_reply_t *extreply;
1275 extreply = xcb_get_extension_data(conn, &xcb_xkb_id);
1276 if (!extreply->present) {
1277 ELOG("xkb is not present on this server\n");
1280 DLOG("initializing xcb-xkb\n");
1281 xcb_xkb_use_extension(conn, XCB_XKB_MAJOR_VERSION, XCB_XKB_MINOR_VERSION);
1282 xcb_xkb_select_events(conn,
1283 XCB_XKB_ID_USE_CORE_KBD,
1284 XCB_XKB_EVENT_TYPE_STATE_NOTIFY,
1286 XCB_XKB_EVENT_TYPE_STATE_NOTIFY,
1290 xkb_base = extreply->first_event;
1294 * Deregister from xkb keyevents.
1297 void deregister_xkb_keyevents() {
1298 xcb_xkb_select_events(conn,
1299 XCB_XKB_ID_USE_CORE_KBD,
1309 * Initialization which depends on 'config' being usable. Called after the
1310 * configuration has arrived.
1313 void init_xcb_late(char *fontname) {
1314 if (fontname == NULL)
1315 fontname = "-misc-fixed-medium-r-normal--13-120-75-75-C-70-iso10646-1";
1318 font = load_font(fontname, true);
1320 DLOG("Calculated font height: %d\n", font.height);
1321 bar_height = font.height + 2 * logical_px(ws_voff_px);
1322 icon_size = bar_height - 2 * logical_px(config.tray_padding);
1324 if (config.separator_symbol)
1325 separator_symbol_width = predict_text_width(config.separator_symbol);
1327 xcb_flush(xcb_connection);
1329 if (config.hide_on_modifier == M_HIDE)
1330 register_xkb_keyevents();
1334 * Inform clients waiting for a new _NET_SYSTEM_TRAY that we took the
1338 static void send_tray_clientmessage(void) {
1339 uint8_t buffer[32] = {0};
1340 xcb_client_message_event_t *ev = (xcb_client_message_event_t *)buffer;
1342 ev->response_type = XCB_CLIENT_MESSAGE;
1343 ev->window = xcb_root;
1344 ev->type = atoms[MANAGER];
1346 ev->data.data32[0] = XCB_CURRENT_TIME;
1347 ev->data.data32[1] = tray_reply->atom;
1348 ev->data.data32[2] = selwin;
1350 xcb_send_event(xcb_connection,
1358 * Initializes tray support by requesting the appropriate _NET_SYSTEM_TRAY atom
1359 * for the X11 display we are running on, then acquiring the selection for this
1360 * atom. Afterwards, tray clients will send ClientMessages to our window.
1363 void init_tray(void) {
1364 DLOG("Initializing system tray functionality\n");
1365 /* request the tray manager atom for the X11 display we are running on */
1366 char atomname[strlen("_NET_SYSTEM_TRAY_S") + 11];
1367 snprintf(atomname, strlen("_NET_SYSTEM_TRAY_S") + 11, "_NET_SYSTEM_TRAY_S%d", screen);
1368 xcb_intern_atom_cookie_t tray_cookie;
1369 if (tray_reply == NULL)
1370 tray_cookie = xcb_intern_atom(xcb_connection, 0, strlen(atomname), atomname);
1372 /* tray support: we need a window to own the selection */
1373 selwin = xcb_generate_id(xcb_connection);
1374 uint32_t selmask = XCB_CW_BACK_PIXEL | XCB_CW_BORDER_PIXEL | XCB_CW_OVERRIDE_REDIRECT | XCB_CW_COLORMAP;
1375 uint32_t selval[] = {root_screen->black_pixel, root_screen->black_pixel, 1, colormap};
1376 xcb_create_window(xcb_connection,
1383 XCB_WINDOW_CLASS_INPUT_OUTPUT,
1384 visual_type->visual_id,
1388 uint32_t orientation = _NET_SYSTEM_TRAY_ORIENTATION_HORZ;
1390 xcb_change_property(xcb_connection,
1391 XCB_PROP_MODE_REPLACE,
1393 atoms[_NET_SYSTEM_TRAY_ORIENTATION],
1398 xcb_change_property(xcb_connection,
1399 XCB_PROP_MODE_REPLACE,
1401 atoms[_NET_SYSTEM_TRAY_VISUAL],
1405 &visual_type->visual_id);
1409 if (tray_reply == NULL) {
1410 if (!(tray_reply = xcb_intern_atom_reply(xcb_connection, tray_cookie, NULL))) {
1411 ELOG("Could not get atom %s\n", atomname);
1416 xcb_set_selection_owner(xcb_connection,
1421 /* Verify that we have the selection */
1422 xcb_get_selection_owner_cookie_t selcookie;
1423 xcb_get_selection_owner_reply_t *selreply;
1425 selcookie = xcb_get_selection_owner(xcb_connection, tray_reply->atom);
1426 if (!(selreply = xcb_get_selection_owner_reply(xcb_connection, selcookie, NULL))) {
1427 ELOG("Could not get selection owner for %s\n", atomname);
1431 if (selreply->owner != selwin) {
1432 ELOG("Could not set the %s selection. "
1433 "Maybe another tray is already running?\n",
1435 /* NOTE that this error is not fatal. We just can’t provide tray
1443 send_tray_clientmessage();
1447 * We need to set the _NET_SYSTEM_TRAY_COLORS atom on the tray selection window
1448 * to make GTK+ 3 applets with symbolic icons visible. If the colors are unset,
1449 * they assume a light background.
1450 * See also https://bugzilla.gnome.org/show_bug.cgi?id=679591
1453 void init_tray_colors(void) {
1454 /* Convert colors.bar_fg (#rrggbb) to 16-bit RGB */
1455 const char *bar_fg = (config.colors.bar_fg ? config.colors.bar_fg : "#FFFFFF");
1457 DLOG("Setting bar_fg = %s as _NET_SYSTEM_TRAY_COLORS\n", bar_fg);
1459 char strgroups[3][3] = {{bar_fg[1], bar_fg[2], '\0'},
1460 {bar_fg[3], bar_fg[4], '\0'},
1461 {bar_fg[5], bar_fg[6], '\0'}};
1462 const uint8_t r = strtol(strgroups[0], NULL, 16);
1463 const uint8_t g = strtol(strgroups[1], NULL, 16);
1464 const uint8_t b = strtol(strgroups[2], NULL, 16);
1466 const uint16_t r16 = ((uint16_t)r << 8) | r;
1467 const uint16_t g16 = ((uint16_t)g << 8) | g;
1468 const uint16_t b16 = ((uint16_t)b << 8) | b;
1470 const uint32_t tray_colors[12] = {
1471 r16, g16, b16, /* foreground color */
1472 r16, g16, b16, /* error color */
1473 r16, g16, b16, /* warning color */
1474 r16, g16, b16, /* success color */
1477 xcb_change_property(xcb_connection,
1478 XCB_PROP_MODE_REPLACE,
1480 atoms[_NET_SYSTEM_TRAY_COLORS],
1488 * Cleanup the xcb stuff.
1489 * Called once, before the program terminates.
1492 void clean_xcb(void) {
1495 SLIST_FOREACH(o_walk, outputs, slist) {
1496 destroy_window(o_walk);
1497 FREE(o_walk->trayclients);
1498 FREE(o_walk->workspaces);
1501 FREE_SLIST(outputs, i3_output);
1506 xcb_free_cursor(xcb_connection, cursor);
1507 xcb_flush(xcb_connection);
1508 xcb_aux_sync(xcb_connection);
1509 xcb_disconnect(xcb_connection);
1511 ev_check_stop(main_loop, xcb_chk);
1512 ev_prepare_stop(main_loop, xcb_prep);
1513 ev_io_stop(main_loop, xcb_io);
1521 * Get the earlier requested atoms and save them in the prepared data structure
1524 void get_atoms(void) {
1525 xcb_intern_atom_reply_t *reply;
1526 #define ATOM_DO(name) \
1527 reply = xcb_intern_atom_reply(xcb_connection, atom_cookies[name], NULL); \
1528 if (reply == NULL) { \
1529 ELOG("Could not get atom %s\n", #name); \
1530 exit(EXIT_FAILURE); \
1532 atoms[name] = reply->atom; \
1535 #include "xcb_atoms.def"
1536 DLOG("Got atoms\n");
1540 * Reparents all tray clients of the specified output to the root window. This
1541 * is either used when shutting down, when an output appears (xrandr --output
1542 * VGA1 --off) or when the primary output changes.
1544 * Applications using the tray will start the protocol from the beginning again
1548 void kick_tray_clients(i3_output *output) {
1549 if (TAILQ_EMPTY(output->trayclients))
1552 trayclient *trayclient;
1553 while (!TAILQ_EMPTY(output->trayclients)) {
1554 trayclient = TAILQ_FIRST(output->trayclients);
1555 /* Unmap, then reparent (to root) the tray client windows */
1556 xcb_unmap_window(xcb_connection, trayclient->win);
1557 xcb_reparent_window(xcb_connection,
1563 /* We remove the trayclient right here. We might receive an UnmapNotify
1564 * event afterwards, but better safe than sorry. */
1565 TAILQ_REMOVE(output->trayclients, trayclient, tailq);
1569 /* Fake a DestroyNotify so that Qt re-adds tray icons.
1570 * We cannot actually destroy the window because then Qt will not restore
1571 * its event mask on the new window. */
1572 uint8_t buffer[32] = {0};
1573 xcb_destroy_notify_event_t *event = (xcb_destroy_notify_event_t *)buffer;
1575 event->response_type = XCB_DESTROY_NOTIFY;
1576 event->event = selwin;
1577 event->window = selwin;
1579 xcb_send_event(conn, false, selwin, XCB_EVENT_MASK_STRUCTURE_NOTIFY, (char *)event);
1581 send_tray_clientmessage();
1585 * Destroy the bar of the specified output
1588 void destroy_window(i3_output *output) {
1589 if (output == NULL) {
1592 if (output->bar.id == XCB_NONE) {
1596 kick_tray_clients(output);
1597 xcb_destroy_window(xcb_connection, output->bar.id);
1598 output->bar.id = XCB_NONE;
1601 /* Strut partial tells i3 where to reserve space for i3bar. This is determined
1602 * by the `position` bar config directive. */
1603 xcb_void_cookie_t config_strut_partial(i3_output *output) {
1604 /* A local struct to save the strut_partial property */
1610 uint32_t left_start_y;
1611 uint32_t left_end_y;
1612 uint32_t right_start_y;
1613 uint32_t right_end_y;
1614 uint32_t top_start_x;
1616 uint32_t bottom_start_x;
1617 uint32_t bottom_end_x;
1618 } __attribute__((__packed__)) strut_partial;
1619 memset(&strut_partial, 0, sizeof(strut_partial));
1621 switch (config.position) {
1625 strut_partial.top = bar_height;
1626 strut_partial.top_start_x = output->rect.x;
1627 strut_partial.top_end_x = output->rect.x + output->rect.w;
1630 strut_partial.bottom = bar_height;
1631 strut_partial.bottom_start_x = output->rect.x;
1632 strut_partial.bottom_end_x = output->rect.x + output->rect.w;
1635 return xcb_change_property(xcb_connection,
1636 XCB_PROP_MODE_REPLACE,
1638 atoms[_NET_WM_STRUT_PARTIAL],
1646 * Reconfigure all bars and create new bars for recently activated outputs
1649 void reconfig_windows(bool redraw_bars) {
1652 static bool tray_configured = false;
1655 SLIST_FOREACH(walk, outputs, slist) {
1656 if (!walk->active) {
1657 /* If an output is not active, we destroy its bar */
1658 /* FIXME: Maybe we rather want to unmap? */
1659 DLOG("Destroying window for output %s\n", walk->name);
1660 destroy_window(walk);
1663 if (walk->bar.id == XCB_NONE) {
1664 DLOG("Creating window for output %s\n", walk->name);
1666 xcb_window_t bar_id = xcb_generate_id(xcb_connection);
1667 xcb_pixmap_t buffer_id = xcb_generate_id(xcb_connection);
1668 xcb_pixmap_t statusline_buffer_id = xcb_generate_id(xcb_connection);
1669 mask = XCB_CW_BACK_PIXEL | XCB_CW_BORDER_PIXEL | XCB_CW_OVERRIDE_REDIRECT | XCB_CW_EVENT_MASK | XCB_CW_COLORMAP | XCB_CW_CURSOR;
1671 values[0] = colors.bar_bg.colorpixel;
1672 values[1] = root_screen->black_pixel;
1673 /* If hide_on_modifier is set to hide or invisible mode, i3 is not supposed to manage our bar windows */
1674 values[2] = (config.hide_on_modifier == M_DOCK ? 0 : 1);
1675 /* We enable the following EventMask fields:
1676 * EXPOSURE, to get expose events (we have to re-draw then)
1677 * SUBSTRUCTURE_REDIRECT, to get ConfigureRequests when the tray
1678 * child windows use ConfigureWindow
1679 * BUTTON_PRESS, to handle clicks on the workspace buttons
1681 values[3] = XCB_EVENT_MASK_EXPOSURE |
1682 XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT |
1683 XCB_EVENT_MASK_BUTTON_PRESS;
1684 if (config.hide_on_modifier == M_DOCK) {
1685 /* If the bar is normally visible, catch visibility change events to suspend
1686 * the status process when the bar is obscured by full-screened windows. */
1687 values[3] |= XCB_EVENT_MASK_VISIBILITY_CHANGE;
1688 walk->visible = true;
1690 values[4] = colormap;
1693 xcb_void_cookie_t win_cookie = xcb_create_window_checked(xcb_connection,
1697 walk->rect.x, walk->rect.y + walk->rect.h - bar_height,
1698 walk->rect.w, bar_height,
1700 XCB_WINDOW_CLASS_INPUT_OUTPUT,
1701 visual_type->visual_id,
1705 /* The double-buffer we use to render stuff off-screen */
1706 xcb_void_cookie_t pm_cookie = xcb_create_pixmap_checked(xcb_connection,
1713 /* The double-buffer we use to render the statusline before copying to buffer */
1714 xcb_void_cookie_t slpm_cookie = xcb_create_pixmap_checked(xcb_connection,
1716 statusline_buffer_id,
1721 /* Set the WM_CLASS and WM_NAME (we don't need UTF-8) atoms */
1722 xcb_void_cookie_t class_cookie;
1723 class_cookie = xcb_change_property(xcb_connection,
1724 XCB_PROP_MODE_REPLACE,
1729 (strlen("i3bar") + 1) * 2,
1733 sasprintf(&name, "i3bar for output %s", walk->name);
1734 xcb_void_cookie_t name_cookie;
1735 name_cookie = xcb_change_property(xcb_connection,
1736 XCB_PROP_MODE_REPLACE,
1745 /* We want dock windows (for now). When override_redirect is set, i3 is ignoring
1747 xcb_void_cookie_t dock_cookie = xcb_change_property(xcb_connection,
1748 XCB_PROP_MODE_REPLACE,
1750 atoms[_NET_WM_WINDOW_TYPE],
1754 (unsigned char *)&atoms[_NET_WM_WINDOW_TYPE_DOCK]);
1756 draw_util_surface_init(xcb_connection, &walk->bar, bar_id, NULL, walk->rect.w, bar_height);
1757 draw_util_surface_init(xcb_connection, &walk->buffer, buffer_id, NULL, walk->rect.w, bar_height);
1758 draw_util_surface_init(xcb_connection, &walk->statusline_buffer, statusline_buffer_id, NULL, walk->rect.w, bar_height);
1760 xcb_void_cookie_t strut_cookie = config_strut_partial(walk);
1762 /* We finally map the bar (display it on screen), unless the modifier-switch is on */
1763 xcb_void_cookie_t map_cookie;
1764 if (config.hide_on_modifier == M_DOCK) {
1765 map_cookie = xcb_map_window_checked(xcb_connection, bar_id);
1768 if (xcb_request_failed(win_cookie, "Could not create window") ||
1769 xcb_request_failed(pm_cookie, "Could not create pixmap") ||
1770 xcb_request_failed(slpm_cookie, "Could not create statusline pixmap") ||
1771 xcb_request_failed(dock_cookie, "Could not set dock mode") ||
1772 xcb_request_failed(class_cookie, "Could not set WM_CLASS") ||
1773 xcb_request_failed(name_cookie, "Could not set WM_NAME") ||
1774 xcb_request_failed(strut_cookie, "Could not set strut") ||
1775 ((config.hide_on_modifier == M_DOCK) && xcb_request_failed(map_cookie, "Could not map window"))) {
1779 /* Unless "tray_output none" was specified, we need to initialize the tray. */
1780 bool no_tray = false;
1781 if (!(TAILQ_EMPTY(&(config.tray_outputs)))) {
1782 no_tray = strcasecmp(TAILQ_FIRST(&(config.tray_outputs))->output, "none") == 0;
1786 * There are three scenarios in which we need to initialize the tray:
1787 * 1. A specific output was listed in tray_outputs which is also
1788 * in the list of outputs managed by this bar.
1789 * 2. No tray_output directive was specified. In this case, we
1790 * use the first available output.
1791 * 3. 'tray_output primary' was specified. In this case we use the
1794 * Three scenarios in which we specifically don't want to
1795 * initialize the tray are:
1796 * 1. 'tray_output none' was specified.
1797 * 2. A specific output was listed as a tray_output, but is not
1798 * one of the outputs managed by this bar. For example, consider
1799 * tray_outputs == [VGA-1], but outputs == [HDMI-1].
1800 * 3. 'tray_output primary' was specified and no output in the list
1803 if (!tray_configured && !no_tray) {
1804 /* If no tray_output was specified, we go ahead and initialize the tray as
1805 * we will be using the first available output. */
1806 if (TAILQ_EMPTY(&(config.tray_outputs))) {
1810 /* If one or more tray_output assignments were specified, we ensure that at least one of
1811 * them is actually an output managed by this instance. */
1812 tray_output_t *tray_output;
1813 TAILQ_FOREACH(tray_output, &(config.tray_outputs), tray_outputs) {
1816 SLIST_FOREACH(output, outputs, slist) {
1817 if (strcasecmp(output->name, tray_output->output) == 0 ||
1818 (strcasecmp(tray_output->output, "primary") == 0 && output->primary)) {
1829 tray_configured = true;
1832 /* We already have a bar, so we just reconfigure it */
1833 mask = XCB_CONFIG_WINDOW_X |
1834 XCB_CONFIG_WINDOW_Y |
1835 XCB_CONFIG_WINDOW_WIDTH |
1836 XCB_CONFIG_WINDOW_HEIGHT |
1837 XCB_CONFIG_WINDOW_STACK_MODE;
1838 values[0] = walk->rect.x;
1839 if (config.position == POS_TOP)
1840 values[1] = walk->rect.y;
1842 values[1] = walk->rect.y + walk->rect.h - bar_height;
1843 values[2] = walk->rect.w;
1844 values[3] = bar_height;
1845 values[4] = XCB_STACK_MODE_ABOVE;
1847 DLOG("Reconfiguring strut partial property for output %s\n", walk->name);
1848 xcb_void_cookie_t strut_cookie = config_strut_partial(walk);
1850 DLOG("Destroying buffer for output %s\n", walk->name);
1851 xcb_free_pixmap(xcb_connection, walk->buffer.id);
1853 DLOG("Destroying statusline buffer for output %s\n", walk->name);
1854 xcb_free_pixmap(xcb_connection, walk->statusline_buffer.id);
1856 DLOG("Reconfiguring window for output %s to %d,%d\n", walk->name, values[0], values[1]);
1857 xcb_void_cookie_t cfg_cookie = xcb_configure_window_checked(xcb_connection,
1862 mask = XCB_CW_OVERRIDE_REDIRECT;
1863 values[0] = (config.hide_on_modifier == M_DOCK ? 0 : 1);
1864 DLOG("Changing window attribute override_redirect for output %s to %d\n", walk->name, values[0]);
1865 xcb_void_cookie_t chg_cookie = xcb_change_window_attributes(xcb_connection,
1870 DLOG("Recreating buffer for output %s\n", walk->name);
1871 xcb_void_cookie_t pm_cookie = xcb_create_pixmap_checked(xcb_connection,
1878 DLOG("Recreating statusline buffer for output %s\n", walk->name);
1879 xcb_void_cookie_t slpm_cookie = xcb_create_pixmap_checked(xcb_connection,
1881 walk->statusline_buffer.id,
1886 draw_util_surface_free(xcb_connection, &(walk->bar));
1887 draw_util_surface_free(xcb_connection, &(walk->buffer));
1888 draw_util_surface_free(xcb_connection, &(walk->statusline_buffer));
1889 draw_util_surface_init(xcb_connection, &(walk->bar), walk->bar.id, NULL, walk->rect.w, bar_height);
1890 draw_util_surface_init(xcb_connection, &(walk->buffer), walk->buffer.id, NULL, walk->rect.w, bar_height);
1891 draw_util_surface_init(xcb_connection, &(walk->statusline_buffer), walk->statusline_buffer.id, NULL, walk->rect.w, bar_height);
1893 xcb_void_cookie_t map_cookie, umap_cookie;
1895 /* Unmap the window, and draw it again when in dock mode */
1896 umap_cookie = xcb_unmap_window_checked(xcb_connection, walk->bar.id);
1897 if (config.hide_on_modifier == M_DOCK) {
1899 map_cookie = xcb_map_window_checked(xcb_connection, walk->bar.id);
1904 if (config.hide_on_modifier == M_HIDE) {
1905 /* Switching to hide mode, register for keyevents */
1906 register_xkb_keyevents();
1908 /* Switching to dock/invisible mode, deregister from keyevents */
1909 deregister_xkb_keyevents();
1913 if (xcb_request_failed(cfg_cookie, "Could not reconfigure window") ||
1914 xcb_request_failed(chg_cookie, "Could not change window") ||
1915 xcb_request_failed(pm_cookie, "Could not create pixmap") ||
1916 xcb_request_failed(slpm_cookie, "Could not create statusline pixmap") ||
1917 xcb_request_failed(strut_cookie, "Could not set strut") ||
1918 (redraw_bars && (xcb_request_failed(umap_cookie, "Could not unmap window") ||
1919 (config.hide_on_modifier == M_DOCK && xcb_request_failed(map_cookie, "Could not map window"))))) {
1927 * Render the bars, with buttons and statusline
1930 void draw_bars(bool unhide) {
1931 DLOG("Drawing bars...\n");
1933 uint32_t full_statusline_width = predict_statusline_length(false);
1934 uint32_t short_statusline_width = predict_statusline_length(true);
1936 i3_output *outputs_walk;
1937 SLIST_FOREACH(outputs_walk, outputs, slist) {
1938 int workspace_width = 0;
1940 if (!outputs_walk->active) {
1941 DLOG("Output %s inactive, skipping...\n", outputs_walk->name);
1944 if (outputs_walk->bar.id == XCB_NONE) {
1945 /* Oh shit, an active output without an own bar. Create it now! */
1946 reconfig_windows(false);
1949 bool use_focus_colors = output_has_focus(outputs_walk);
1951 /* First things first: clear the backbuffer */
1952 draw_util_clear_surface(&(outputs_walk->buffer), (use_focus_colors ? colors.focus_bar_bg : colors.bar_bg));
1954 if (!config.disable_ws) {
1956 TAILQ_FOREACH(ws_walk, outputs_walk->workspaces, tailq) {
1957 DLOG("Drawing button for WS %s at x = %d, len = %d\n",
1958 i3string_as_utf8(ws_walk->name), workspace_width, ws_walk->name_width);
1959 color_t fg_color = colors.inactive_ws_fg;
1960 color_t bg_color = colors.inactive_ws_bg;
1961 color_t border_color = colors.inactive_ws_border;
1962 if (ws_walk->visible) {
1963 if (!ws_walk->focused) {
1964 fg_color = colors.active_ws_fg;
1965 bg_color = colors.active_ws_bg;
1966 border_color = colors.active_ws_border;
1968 fg_color = colors.focus_ws_fg;
1969 bg_color = colors.focus_ws_bg;
1970 border_color = colors.focus_ws_border;
1973 if (ws_walk->urgent) {
1974 DLOG("WS %s is urgent!\n", i3string_as_utf8(ws_walk->name));
1975 fg_color = colors.urgent_ws_fg;
1976 bg_color = colors.urgent_ws_bg;
1977 border_color = colors.urgent_ws_border;
1981 /* Draw the border of the button. */
1982 draw_util_rectangle(&(outputs_walk->buffer), border_color,
1985 ws_walk->name_width + 2 * logical_px(ws_hoff_px) + 2 * logical_px(1),
1986 font.height + 2 * logical_px(ws_voff_px) - 2 * logical_px(1));
1988 /* Draw the inside of the button. */
1989 draw_util_rectangle(&(outputs_walk->buffer), bg_color,
1990 workspace_width + logical_px(1),
1992 ws_walk->name_width + 2 * logical_px(ws_hoff_px),
1993 font.height + 2 * logical_px(ws_voff_px) - 4 * logical_px(1));
1995 draw_util_text(ws_walk->name, &(outputs_walk->buffer), fg_color, bg_color,
1996 workspace_width + logical_px(ws_hoff_px) + logical_px(1),
1997 logical_px(ws_voff_px),
1998 ws_walk->name_width);
2000 workspace_width += 2 * logical_px(ws_hoff_px) + 2 * logical_px(1) + ws_walk->name_width;
2001 if (TAILQ_NEXT(ws_walk, tailq) != NULL)
2002 workspace_width += logical_px(ws_spacing_px);
2006 if (binding.name && !config.disable_binding_mode_indicator) {
2007 workspace_width += logical_px(ws_spacing_px);
2009 color_t fg_color = colors.binding_mode_fg;
2010 color_t bg_color = colors.binding_mode_bg;
2012 draw_util_rectangle(&(outputs_walk->buffer), colors.binding_mode_border,
2015 binding.width + 2 * logical_px(ws_hoff_px) + 2 * logical_px(1),
2016 font.height + 2 * logical_px(ws_voff_px) - 2 * logical_px(1));
2018 draw_util_rectangle(&(outputs_walk->buffer), bg_color,
2019 workspace_width + logical_px(1),
2021 binding.width + 2 * logical_px(ws_hoff_px),
2022 font.height + 2 * logical_px(ws_voff_px) - 4 * logical_px(1));
2024 draw_util_text(binding.name, &(outputs_walk->buffer), fg_color, bg_color,
2025 workspace_width + logical_px(ws_hoff_px) + logical_px(1),
2026 logical_px(ws_voff_px),
2030 workspace_width += 2 * logical_px(ws_hoff_px) + 2 * logical_px(1) + binding.width;
2033 if (!TAILQ_EMPTY(&statusline_head)) {
2034 DLOG("Printing statusline!\n");
2036 int tray_width = get_tray_width(outputs_walk->trayclients);
2037 uint32_t max_statusline_width = outputs_walk->rect.w - workspace_width - tray_width - 2 * logical_px(sb_hoff_px);
2038 uint32_t clip_left = 0;
2039 uint32_t statusline_width = full_statusline_width;
2040 bool use_short_text = false;
2042 if (statusline_width > max_statusline_width) {
2043 statusline_width = short_statusline_width;
2044 use_short_text = true;
2045 if (statusline_width > max_statusline_width) {
2046 clip_left = statusline_width - max_statusline_width;
2050 int16_t visible_statusline_width = MIN(statusline_width, max_statusline_width);
2051 int x_dest = outputs_walk->rect.w - tray_width - logical_px(sb_hoff_px) - visible_statusline_width;
2053 draw_statusline(outputs_walk, clip_left, use_focus_colors, use_short_text);
2054 draw_util_copy_surface(&outputs_walk->statusline_buffer, &outputs_walk->buffer, 0, 0,
2055 x_dest, 0, visible_statusline_width, (int16_t)bar_height);
2057 outputs_walk->statusline_width = statusline_width;
2058 outputs_walk->statusline_short_text = use_short_text;
2062 /* Assure the bar is hidden/unhidden according to the specified hidden_state and mode */
2064 config.hidden_state == S_SHOW ||
2067 } else if (config.hide_on_modifier == M_HIDE) {
2075 * Redraw the bars, i.e. simply copy the buffer to the barwindow
2078 void redraw_bars(void) {
2079 i3_output *outputs_walk;
2080 SLIST_FOREACH(outputs_walk, outputs, slist) {
2081 if (!outputs_walk->active) {
2085 draw_util_copy_surface(&(outputs_walk->buffer), &(outputs_walk->bar), 0, 0,
2086 0, 0, outputs_walk->rect.w, outputs_walk->rect.h);
2087 xcb_flush(xcb_connection);
2092 * Set the current binding mode
2095 void set_current_mode(struct mode *current) {
2096 I3STRING_FREE(binding.name);
2098 activated_mode = binding.name != NULL;