4 * i3 - an improved dynamic tiling window manager
6 * © 2009-2010 Michael Stapelberg and contributors
8 * See file LICENSE for license information.
18 #include <xcb/xcb_atom.h>
19 #include <xcb/xcb_icccm.h>
20 #include <xcb/randr.h>
22 #include <X11/XKBlib.h>
39 #include "workspace.h"
41 #include "container.h"
43 /* After mapping/unmapping windows, a notify event is generated. However, we don’t want it,
44 since it’d trigger an infinite loop of switching between the different windows when
45 changing workspaces */
46 static SLIST_HEAD(ignore_head, Ignore_Event) ignore_events;
48 static void add_ignore_event(const int sequence) {
49 struct Ignore_Event *event = smalloc(sizeof(struct Ignore_Event));
51 event->sequence = sequence;
52 event->added = time(NULL);
54 SLIST_INSERT_HEAD(&ignore_events, event, ignore_events);
58 * Checks if the given sequence is ignored and returns true if so.
61 static bool event_is_ignored(const int sequence) {
62 struct Ignore_Event *event;
63 time_t now = time(NULL);
64 for (event = SLIST_FIRST(&ignore_events); event != SLIST_END(&ignore_events);) {
65 if ((now - event->added) > 5) {
66 struct Ignore_Event *save = event;
67 event = SLIST_NEXT(event, ignore_events);
68 SLIST_REMOVE(&ignore_events, save, Ignore_Event, ignore_events);
70 } else event = SLIST_NEXT(event, ignore_events);
73 SLIST_FOREACH(event, &ignore_events, ignore_events) {
74 if (event->sequence == sequence) {
75 SLIST_REMOVE(&ignore_events, event, Ignore_Event, ignore_events);
85 * Due to bindings like Mode_switch + <a>, we need to bind some keys in XCB_GRAB_MODE_SYNC.
86 * Therefore, we just replay all key presses.
89 int handle_key_release(void *ignored, xcb_connection_t *conn, xcb_key_release_event_t *event) {
90 xcb_allow_events(conn, XCB_ALLOW_REPLAY_KEYBOARD, event->time);
96 * There was a key press. We compare this key code with our bindings table and pass
97 * the bound action to parse_command().
100 int handle_key_press(void *ignored, xcb_connection_t *conn, xcb_key_press_event_t *event) {
101 DLOG("Keypress %d, state raw = %d\n", event->detail, event->state);
103 /* Remove the numlock bit, all other bits are modifiers we can bind to */
104 uint16_t state_filtered = event->state & ~(xcb_numlock_mask | XCB_MOD_MASK_LOCK);
105 DLOG("(removed numlock, state = %d)\n", state_filtered);
106 /* Only use the lower 8 bits of the state (modifier masks) so that mouse
107 * button masks are filtered out */
108 state_filtered &= 0xFF;
109 DLOG("(removed upper 8 bits, state = %d)\n", state_filtered);
112 /* We need to get the keysym group (There are group 1 to group 4, each holding
113 two keysyms (without shift and with shift) using Xkb because X fails to
114 provide them reliably (it works in Xephyr, it does not in real X) */
116 if (XkbGetState(xkbdpy, XkbUseCoreKbd, &state) == Success && (state.group+1) == 2)
117 state_filtered |= BIND_MODE_SWITCH;
120 DLOG("(checked mode_switch, state %d)\n", state_filtered);
122 /* Find the binding */
124 TAILQ_FOREACH(bind, bindings, bindings) {
125 /* First compare the modifiers */
126 if (bind->mods != state_filtered)
129 /* If a symbol was specified by the user, we need to look in
130 * the array of translated keycodes for the event’s keycode */
131 if (bind->symbol != NULL) {
132 if (memmem(bind->translated_to,
133 bind->number_keycodes * sizeof(xcb_keycode_t),
134 &(event->detail), sizeof(xcb_keycode_t)) != NULL)
137 /* This case is easier: The user specified a keycode */
138 if (bind->keycode == event->detail)
143 /* No match? Then it was an actively grabbed key, that is with Mode_switch, and
144 the user did not press Mode_switch, so just pass it… */
145 if (bind == TAILQ_END(bindings)) {
146 xcb_allow_events(conn, ReplayKeyboard, event->time);
151 parse_command(conn, bind->command);
152 if (state_filtered & BIND_MODE_SWITCH) {
153 DLOG("Mode_switch -> allow_events(SyncKeyboard)\n");
154 xcb_allow_events(conn, SyncKeyboard, event->time);
161 * Called with coordinates of an enter_notify event or motion_notify event
162 * to check if the user crossed virtual screen boundaries and adjust the
163 * current workspace, if so.
166 static void check_crossing_screen_boundary(uint32_t x, uint32_t y) {
169 if ((output = get_output_containing(x, y)) == NULL) {
170 ELOG("ERROR: No such screen\n");
173 if (output == c_ws->output)
176 c_ws->current_row = current_row;
177 c_ws->current_col = current_col;
178 c_ws = output->current_workspace;
179 current_row = c_ws->current_row;
180 current_col = c_ws->current_col;
181 DLOG("We're now on output %p\n", output);
183 /* While usually this function is only called when the user switches
184 * to a different output using his mouse (and thus the output is
185 * empty), it may be that the following race condition occurs:
186 * 1) the user actives a new output (say VGA1).
187 * 2) the cursor is sent to the first pixel of the new VGA1, thus
188 * generating an enter_notify for the screen (the enter_notify
189 * is not yet received by i3).
190 * 3) i3 requeries screen configuration and maps a workspace onto the
192 * 4) the enter_notify event arrives and c_ws is set to the new
193 * workspace but the existing windows on the new workspace are not
196 * Therefore, we re-set the focus here to be sure it’s correct. */
197 Client *first_client = SLIST_FIRST(&(c_ws->focus_stack));
198 if (first_client != NULL)
199 set_focus(global_conn, first_client, true);
203 * When the user moves the mouse pointer onto a window, this callback gets called.
206 int handle_enter_notify(void *ignored, xcb_connection_t *conn, xcb_enter_notify_event_t *event) {
207 DLOG("enter_notify for %08x, mode = %d, detail %d, serial %d\n", event->event, event->mode, event->detail, event->sequence);
208 if (event->mode != XCB_NOTIFY_MODE_NORMAL) {
209 DLOG("This was not a normal notify, ignoring\n");
212 /* Some events are not interesting, because they were not generated actively by the
213 user, but by reconfiguration of windows */
214 if (event_is_ignored(event->sequence))
217 /* This was either a focus for a client’s parent (= titlebar)… */
218 Client *client = table_get(&by_parent, event->event);
219 /* …or the client itself */
221 client = table_get(&by_child, event->event);
223 /* Check for stack windows */
224 if (client == NULL) {
225 struct Stack_Window *stack_win;
226 SLIST_FOREACH(stack_win, &stack_wins, stack_windows)
227 if (stack_win->window == event->event) {
228 client = stack_win->container->currently_focused;
234 /* If not, then the user moved his cursor to the root window. In that case, we adjust c_ws */
235 if (client == NULL) {
236 DLOG("Getting screen at %d x %d\n", event->root_x, event->root_y);
237 check_crossing_screen_boundary(event->root_x, event->root_y);
241 /* Do plausibility checks: This event may be useless for us if it occurs on a window
242 which is in a stacked container but not the focused one */
243 if (client->container != NULL &&
244 client->container->mode == MODE_STACK &&
245 client->container->currently_focused != client) {
246 DLOG("Plausibility check says: no\n");
250 if (client->workspace != c_ws && client->workspace->output == c_ws->output) {
251 /* This can happen when a client gets assigned to a different workspace than
252 * the current one (see src/mainx.c:reparent_window). Shortly after it was created,
253 * an enter_notify will follow. */
254 DLOG("enter_notify for a client on a different workspace but the same screen, ignoring\n");
258 if (!config.disable_focus_follows_mouse)
259 set_focus(conn, client, false);
265 * When the user moves the mouse but does not change the active window
266 * (e.g. when having no windows opened but moving mouse on the root screen
267 * and crossing virtual screen boundaries), this callback gets called.
270 int handle_motion_notify(void *ignored, xcb_connection_t *conn, xcb_motion_notify_event_t *event) {
271 /* Skip events where the pointer was over a child window, we are only
272 * interested in events on the root window. */
273 if (event->child != 0)
276 check_crossing_screen_boundary(event->root_x, event->root_y);
282 * Called when the keyboard mapping changes (for example by using Xmodmap),
283 * we need to update our key bindings then (re-translate symbols).
286 int handle_mapping_notify(void *ignored, xcb_connection_t *conn, xcb_mapping_notify_event_t *event) {
287 if (event->request != XCB_MAPPING_KEYBOARD &&
288 event->request != XCB_MAPPING_MODIFIER)
291 DLOG("Received mapping_notify for keyboard or modifier mapping, re-grabbing keys\n");
292 xcb_refresh_keyboard_mapping(keysyms, event);
294 xcb_get_numlock_mask(conn);
296 ungrab_all_keys(conn);
303 * A new window appeared on the screen (=was mapped), so let’s manage it.
306 int handle_map_request(void *prophs, xcb_connection_t *conn, xcb_map_request_event_t *event) {
307 xcb_get_window_attributes_cookie_t cookie;
309 cookie = xcb_get_window_attributes_unchecked(conn, event->window);
311 DLOG("window = 0x%08x, serial is %d.\n", event->window, event->sequence);
312 add_ignore_event(event->sequence);
314 manage_window(prophs, conn, event->window, cookie, false);
319 * Configure requests are received when the application wants to resize windows on their own.
321 * We generate a synthethic configure notify event to signalize the client its "new" position.
324 int handle_configure_request(void *prophs, xcb_connection_t *conn, xcb_configure_request_event_t *event) {
325 DLOG("window 0x%08x wants to be at %dx%d with %dx%d\n",
326 event->window, event->x, event->y, event->width, event->height);
328 Client *client = table_get(&by_child, event->window);
329 if (client == NULL) {
333 #define COPY_MASK_MEMBER(mask_member, event_member) do { \
334 if (event->value_mask & mask_member) { \
335 mask |= mask_member; \
336 values[c++] = event->event_member; \
340 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_X, x);
341 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_Y, y);
342 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_WIDTH, width);
343 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_HEIGHT, height);
344 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_BORDER_WIDTH, border_width);
345 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_SIBLING, sibling);
346 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_STACK_MODE, stack_mode);
348 xcb_configure_window(conn, event->window, mask, values);
354 if (client->fullscreen) {
355 DLOG("Client is in fullscreen mode\n");
357 Rect child_rect = client->workspace->rect;
358 child_rect.x = child_rect.y = 0;
359 fake_configure_notify(conn, child_rect, client->child);
364 /* Floating clients can be reconfigured */
365 if (client_is_floating(client)) {
366 i3Font *font = load_font(conn, config.font);
367 int mode = (client->container != NULL ? client->container->mode : MODE_DEFAULT);
368 /* TODO: refactor this code. we need a function to translate
369 * coordinates of child_rect/rect. */
371 if (event->value_mask & XCB_CONFIG_WINDOW_X) {
372 if (mode == MODE_STACK || mode == MODE_TABBED) {
373 client->rect.x = event->x - 2;
375 if (client->titlebar_position == TITLEBAR_OFF && client->borderless)
376 client->rect.x = event->x;
377 else if (client->titlebar_position == TITLEBAR_OFF && !client->borderless)
378 client->rect.x = event->x - 1;
379 else client->rect.x = event->x - 2;
382 if (event->value_mask & XCB_CONFIG_WINDOW_Y) {
383 if (mode == MODE_STACK || mode == MODE_TABBED) {
384 client->rect.y = event->y - 2;
386 if (client->titlebar_position == TITLEBAR_OFF && client->borderless)
387 client->rect.y = event->y;
388 else if (client->titlebar_position == TITLEBAR_OFF && !client->borderless)
389 client->rect.y = event->y - 1;
390 else client->rect.y = event->y - font->height - 2 - 2;
393 if (event->value_mask & XCB_CONFIG_WINDOW_WIDTH) {
394 if (mode == MODE_STACK || mode == MODE_TABBED) {
395 client->rect.width = event->width + 2 + 2;
397 if (client->titlebar_position == TITLEBAR_OFF && client->borderless)
398 client->rect.width = event->width;
399 else if (client->titlebar_position == TITLEBAR_OFF && !client->borderless)
400 client->rect.width = event->width + (1 + 1);
401 else client->rect.width = event->width + (2 + 2);
404 if (event->value_mask & XCB_CONFIG_WINDOW_HEIGHT) {
405 if (mode == MODE_STACK || mode == MODE_TABBED) {
406 client->rect.height = event->height + 2;
408 if (client->titlebar_position == TITLEBAR_OFF && client->borderless)
409 client->rect.height = event->height;
410 else if (client->titlebar_position == TITLEBAR_OFF && !client->borderless)
411 client->rect.height = event->height + (1 + 1);
412 else client->rect.height = event->height + (font->height + 2 + 2) + 2;
416 DLOG("Accepted new position/size for floating client: (%d, %d) size %d x %d\n",
417 client->rect.x, client->rect.y, client->rect.width, client->rect.height);
419 /* Push the new position/size to X11 */
420 reposition_client(conn, client);
421 resize_client(conn, client);
427 /* Dock clients can be reconfigured in their height */
429 DLOG("Reconfiguring height of this dock client\n");
431 if (!(event->value_mask & XCB_CONFIG_WINDOW_HEIGHT)) {
432 DLOG("Ignoring configure request, no height given\n");
436 client->desired_height = event->height;
437 render_workspace(conn, c_ws->output, c_ws);
443 if (client->fullscreen) {
444 DLOG("Client is in fullscreen mode\n");
446 Rect child_rect = client->container->workspace->rect;
447 child_rect.x = child_rect.y = 0;
448 fake_configure_notify(conn, child_rect, client->child);
453 fake_absolute_configure_notify(conn, client);
459 * Configuration notifies are only handled because we need to set up ignore for
460 * the following enter notify events.
463 int handle_configure_event(void *prophs, xcb_connection_t *conn, xcb_configure_notify_event_t *event) {
464 /* We ignore this sequence twice because events for child and frame should be ignored */
465 add_ignore_event(event->sequence);
466 add_ignore_event(event->sequence);
472 * Gets triggered upon a RandR screen change event, that is when the user
473 * changes the screen configuration in any way (mode, position, …)
476 int handle_screen_change(void *prophs, xcb_connection_t *conn,
477 xcb_generic_event_t *e) {
478 DLOG("RandR screen change\n");
480 randr_query_outputs(conn);
486 * Our window decorations were unmapped. That means, the window will be killed now,
487 * so we better clean up before.
490 int handle_unmap_notify_event(void *data, xcb_connection_t *conn, xcb_unmap_notify_event_t *event) {
491 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
493 add_ignore_event(event->sequence);
495 Client *client = table_get(&by_child, event->window);
496 /* First, we need to check if the client is awaiting an unmap-request which
497 was generated by us reparenting the window. In that case, we just ignore it. */
498 if (client != NULL && client->awaiting_useless_unmap) {
499 client->awaiting_useless_unmap = false;
503 DLOG("event->window = %08x, event->event = %08x\n", event->window, event->event);
504 DLOG("UnmapNotify for 0x%08x (received from 0x%08x)\n", event->window, event->event);
505 if (client == NULL) {
506 DLOG("not a managed window. Ignoring.\n");
508 /* This was most likely the destroyed frame of a client which is
509 * currently being unmapped, so we add this sequence (again!) to
510 * the ignore list (enter_notify events will get sent for both,
511 * the child and its frame). */
512 add_ignore_event(event->sequence);
517 client = table_remove(&by_child, event->window);
519 /* If this was the fullscreen client, we need to unset it */
520 if (client->fullscreen)
521 client->workspace->fullscreen_client = NULL;
523 /* Clients without a container are either floating or dock windows */
524 if (client->container != NULL) {
525 Container *con = client->container;
527 /* Remove the client from the list of clients */
528 client_remove_from_container(conn, client, con, true);
530 /* Set focus to the last focused client in this container */
531 con->currently_focused = get_last_focused_client(conn, con, NULL);
533 /* Only if this is the active container, we need to really change focus */
534 if ((con->currently_focused != NULL) && ((con == CUR_CELL) || client->fullscreen))
535 set_focus(conn, con->currently_focused, true);
536 } else if (client_is_floating(client)) {
537 DLOG("Removing from floating clients\n");
538 TAILQ_REMOVE(&(client->workspace->floating_clients), client, floating_clients);
539 SLIST_REMOVE(&(client->workspace->focus_stack), client, Client, focus_clients);
543 DLOG("Removing from dock clients\n");
544 SLIST_REMOVE(&(client->workspace->output->dock_clients), client, Client, dock_clients);
547 DLOG("child of 0x%08x.\n", client->frame);
548 xcb_reparent_window(conn, client->child, root, 0, 0);
550 client_unmap(conn, client);
552 xcb_destroy_window(conn, client->frame);
554 table_remove(&by_parent, client->frame);
556 if (client->container != NULL) {
557 Workspace *workspace = client->container->workspace;
558 cleanup_table(conn, workspace);
559 fix_colrowspan(conn, workspace);
562 /* Let’s see how many clients there are left on the workspace to delete it if it’s empty */
563 bool workspace_empty = SLIST_EMPTY(&(client->workspace->focus_stack));
564 bool workspace_active = false;
565 Client *to_focus = (!workspace_empty ? SLIST_FIRST(&(client->workspace->focus_stack)) : NULL);
567 /* If this workspace is currently active, we don’t delete it */
569 TAILQ_FOREACH(screen, &outputs, outputs)
570 if (screen->current_workspace == client->workspace) {
571 workspace_active = true;
572 workspace_empty = false;
577 client->workspace->output = NULL;
579 /* Remove the urgency flag if set */
580 client->urgent = false;
581 workspace_update_urgent_flag(client->workspace);
583 FREE(client->window_class_instance);
584 FREE(client->window_class_class);
590 /* Ensure the focus is set to the next client in the focus stack or to
591 * the screen itself (if we do not focus the screen, it can happen that
592 * the focus is "nowhere" and thus keypress events will not be received
593 * by i3, thus the user cannot use any hotkeys). */
594 if (workspace_active) {
595 if (to_focus != NULL)
596 set_focus(conn, to_focus, true);
598 DLOG("Restoring focus to root screen\n");
599 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, root, XCB_CURRENT_TIME);
608 * Called when a window changes its title
611 int handle_windowname_change(void *data, xcb_connection_t *conn, uint8_t state,
612 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
613 if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
614 DLOG("_NET_WM_NAME not specified, not changing\n");
617 Client *client = table_get(&by_child, window);
621 /* Save the old pointer to make the update atomic */
624 asprintf(&new_name, "%.*s", xcb_get_property_value_length(prop), (char*)xcb_get_property_value(prop));
625 /* Convert it to UCS-2 here for not having to convert it later every time we want to pass it to X */
626 char *ucs2_name = convert_utf8_to_ucs2(new_name, &new_len);
627 LOG("_NET_WM_NAME changed to \"%s\"\n", new_name);
630 /* Check if they are the same and don’t update if so.
631 Note the use of new_len * 2 to check all bytes as each glyph takes 2 bytes.
632 Also note the use of memcmp() instead of strncmp() because the latter stops on nullbytes,
633 but UCS-2 uses nullbytes to fill up glyphs which only use one byte. */
634 if ((new_len == client->name_len) &&
635 (client->name != NULL) &&
636 (memcmp(client->name, ucs2_name, new_len * 2) == 0)) {
641 char *old_name = client->name;
642 client->name = ucs2_name;
643 client->name_len = new_len;
644 client->uses_net_wm_name = true;
648 /* If the client is a dock window, we don’t need to render anything */
652 int mode = container_mode(client->container, true);
653 if (mode == MODE_STACK || mode == MODE_TABBED)
654 render_container(conn, client->container);
655 else decorate_window(conn, client, client->frame, client->titlegc, 0, 0);
662 * We handle legacy window names (titles) which are in COMPOUND_TEXT encoding. However, we
663 * just pass them along, so when containing non-ASCII characters, those will be rendering
664 * incorrectly. In order to correctly render unicode window titles in i3, an application
665 * has to set _NET_WM_NAME, which is in UTF-8 encoding.
667 * On every update, a message is put out to the user, so he may improve the situation and
668 * update applications which display filenames in their title to correctly use
669 * _NET_WM_NAME and therefore support unicode.
672 int handle_windowname_change_legacy(void *data, xcb_connection_t *conn, uint8_t state,
673 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
674 if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
675 DLOG("prop == NULL\n");
678 Client *client = table_get(&by_child, window);
682 /* Client capable of _NET_WM_NAME, ignore legacy name changes */
683 if (client->uses_net_wm_name)
686 /* Save the old pointer to make the update atomic */
688 if (asprintf(&new_name, "%.*s", xcb_get_property_value_length(prop), (char*)xcb_get_property_value(prop)) == -1) {
689 perror("Could not get old name");
690 DLOG("Could not get old name\n");
693 /* Convert it to UCS-2 here for not having to convert it later every time we want to pass it to X */
694 LOG("WM_NAME changed to \"%s\"\n", new_name);
696 /* Check if they are the same and don’t update if so. */
697 if (client->name != NULL &&
698 strlen(new_name) == strlen(client->name) &&
699 strcmp(client->name, new_name) == 0) {
704 LOG("Using legacy window title. Note that in order to get Unicode window titles in i3, "
705 "the application has to set _NET_WM_NAME which is in UTF-8 encoding.\n");
707 char *old_name = client->name;
708 client->name = new_name;
709 client->name_len = -1;
711 if (old_name != NULL)
714 /* If the client is a dock window, we don’t need to render anything */
718 if (client->container != NULL &&
719 (client->container->mode == MODE_STACK ||
720 client->container->mode == MODE_TABBED))
721 render_container(conn, client->container);
722 else decorate_window(conn, client, client->frame, client->titlegc, 0, 0);
729 * Updates the client’s WM_CLASS property
732 int handle_windowclass_change(void *data, xcb_connection_t *conn, uint8_t state,
733 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
734 if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
735 DLOG("prop == NULL\n");
738 Client *client = table_get(&by_child, window);
742 /* We cannot use asprintf here since this property contains two
743 * null-terminated strings (for compatibility reasons). Instead, we
744 * use strdup() on both strings */
745 char *new_class = xcb_get_property_value(prop);
747 FREE(client->window_class_instance);
748 FREE(client->window_class_class);
750 client->window_class_instance = strdup(new_class);
751 if ((strlen(new_class) + 1) < xcb_get_property_value_length(prop))
752 client->window_class_class = strdup(new_class + strlen(new_class) + 1);
753 else client->window_class_class = NULL;
754 LOG("WM_CLASS changed to %s (instance), %s (class)\n",
755 client->window_class_instance, client->window_class_class);
761 * Expose event means we should redraw our windows (= title bar)
764 int handle_expose_event(void *data, xcb_connection_t *conn, xcb_expose_event_t *event) {
765 /* event->count is the number of minimum remaining expose events for this window, so we
766 skip all events but the last one */
767 if (event->count != 0)
769 DLOG("window = %08x\n", event->window);
771 Client *client = table_get(&by_parent, event->window);
772 if (client == NULL) {
773 /* There was no client in the table, so this is probably an expose event for
774 one of our stack_windows. */
775 struct Stack_Window *stack_win;
776 SLIST_FOREACH(stack_win, &stack_wins, stack_windows)
777 if (stack_win->window == event->window) {
778 render_container(conn, stack_win->container);
782 /* …or one of the bars? */
784 TAILQ_FOREACH(output, &outputs, outputs)
785 if (output->bar == event->window)
793 if (container_mode(client->container, true) == MODE_DEFAULT)
794 decorate_window(conn, client, client->frame, client->titlegc, 0, 0);
796 uint32_t background_color;
798 background_color = config.client.urgent.background;
799 /* Distinguish if the window is currently focused… */
800 else if (CUR_CELL != NULL && CUR_CELL->currently_focused == client)
801 background_color = config.client.focused.background;
802 /* …or if it is the focused window in a not focused container */
803 else background_color = config.client.focused_inactive.background;
805 /* Set foreground color to current focused color, line width to 2 */
806 uint32_t values[] = {background_color, 2};
807 xcb_change_gc(conn, client->titlegc, XCB_GC_FOREGROUND | XCB_GC_LINE_WIDTH, values);
809 /* Draw the border, the ±1 is for line width = 2 */
810 xcb_point_t points[] = {{1, 0}, /* left upper edge */
811 {1, client->rect.height-1}, /* left bottom edge */
812 {client->rect.width-1, client->rect.height-1}, /* right bottom edge */
813 {client->rect.width-1, 0}}; /* right upper edge */
814 xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, client->frame, client->titlegc, 4, points);
816 /* Draw a black background */
817 xcb_change_gc_single(conn, client->titlegc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#000000"));
818 if (client->titlebar_position == TITLEBAR_OFF && !client->borderless) {
819 xcb_rectangle_t crect = {1, 0, client->rect.width - (1 + 1), client->rect.height - 1};
820 xcb_poly_fill_rectangle(conn, client->frame, client->titlegc, 1, &crect);
822 xcb_rectangle_t crect = {2, 0, client->rect.width - (2 + 2), client->rect.height - 2};
823 xcb_poly_fill_rectangle(conn, client->frame, client->titlegc, 1, &crect);
831 * Handle client messages (EWMH)
834 int handle_client_message(void *data, xcb_connection_t *conn, xcb_client_message_event_t *event) {
835 if (event->type == atoms[_NET_WM_STATE]) {
836 if (event->format != 32 || event->data.data32[1] != atoms[_NET_WM_STATE_FULLSCREEN])
839 Client *client = table_get(&by_child, event->window);
843 /* Check if the fullscreen state should be toggled */
844 if ((client->fullscreen &&
845 (event->data.data32[0] == _NET_WM_STATE_REMOVE ||
846 event->data.data32[0] == _NET_WM_STATE_TOGGLE)) ||
847 (!client->fullscreen &&
848 (event->data.data32[0] == _NET_WM_STATE_ADD ||
849 event->data.data32[0] == _NET_WM_STATE_TOGGLE)))
850 client_toggle_fullscreen(conn, client);
852 ELOG("unhandled clientmessage\n");
859 int handle_window_type(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
860 xcb_atom_t atom, xcb_get_property_reply_t *property) {
861 /* TODO: Implement this one. To do this, implement a little test program which sleep(1)s
862 before changing this property. */
863 ELOG("_NET_WM_WINDOW_TYPE changed, this is not yet implemented.\n");
868 * Handles the size hints set by a window, but currently only the part necessary for displaying
869 * clients proportionally inside their frames (mplayer for example)
871 * See ICCCM 4.1.2.3 for more details
874 int handle_normal_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
875 xcb_atom_t name, xcb_get_property_reply_t *reply) {
876 Client *client = table_get(&by_child, window);
877 if (client == NULL) {
878 DLOG("Received WM_SIZE_HINTS for unknown client\n");
881 xcb_size_hints_t size_hints;
885 /* If the hints were already in this event, use them, if not, request them */
887 xcb_get_wm_size_hints_from_reply(&size_hints, reply);
889 xcb_get_wm_normal_hints_reply(conn, xcb_get_wm_normal_hints_unchecked(conn, client->child), &size_hints, NULL);
891 if ((size_hints.flags & XCB_SIZE_HINT_P_MIN_SIZE)) {
892 // TODO: Minimum size is not yet implemented
893 DLOG("Minimum size: %d (width) x %d (height)\n", size_hints.min_width, size_hints.min_height);
896 bool changed = false;
897 if ((size_hints.flags & XCB_SIZE_HINT_P_RESIZE_INC)) {
898 if (size_hints.width_inc > 0 && size_hints.width_inc < 0xFFFF)
899 if (client->width_increment != size_hints.width_inc) {
900 client->width_increment = size_hints.width_inc;
903 if (size_hints.height_inc > 0 && size_hints.height_inc < 0xFFFF)
904 if (client->height_increment != size_hints.height_inc) {
905 client->height_increment = size_hints.height_inc;
910 DLOG("resize increments changed\n");
913 int base_width = 0, base_height = 0;
915 /* base_width/height are the desired size of the window.
916 We check if either the program-specified size or the program-specified
917 min-size is available */
918 if (size_hints.flags & XCB_SIZE_HINT_BASE_SIZE) {
919 base_width = size_hints.base_width;
920 base_height = size_hints.base_height;
921 } else if (size_hints.flags & XCB_SIZE_HINT_P_MIN_SIZE) {
922 /* TODO: is this right? icccm says not */
923 base_width = size_hints.min_width;
924 base_height = size_hints.min_height;
927 if (base_width != client->base_width ||
928 base_height != client->base_height) {
929 client->base_width = base_width;
930 client->base_height = base_height;
931 DLOG("client's base_height changed to %d\n", base_height);
932 DLOG("client's base_width changed to %d\n", base_width);
937 if (client->fullscreen)
938 DLOG("Not resizing client, it is in fullscreen mode\n");
940 resize_client(conn, client);
945 /* If no aspect ratio was set or if it was invalid, we ignore the hints */
946 if (!(size_hints.flags & XCB_SIZE_HINT_P_ASPECT) ||
947 (size_hints.min_aspect_num <= 0) ||
948 (size_hints.min_aspect_den <= 0)) {
952 double width = client->rect.width - base_width;
953 double height = client->rect.height - base_height;
954 /* Convert numerator/denominator to a double */
955 double min_aspect = (double)size_hints.min_aspect_num / size_hints.min_aspect_den;
956 double max_aspect = (double)size_hints.max_aspect_num / size_hints.min_aspect_den;
958 DLOG("Aspect ratio set: minimum %f, maximum %f\n", min_aspect, max_aspect);
959 DLOG("width = %f, height = %f\n", width, height);
961 /* Sanity checks, this is user-input, in a way */
962 if (max_aspect <= 0 || min_aspect <= 0 || height == 0 || (width / height) <= 0)
965 /* Check if we need to set proportional_* variables using the correct ratio */
966 if ((width / height) < min_aspect) {
967 client->proportional_width = width;
968 client->proportional_height = width / min_aspect;
969 } else if ((width / height) > max_aspect) {
970 client->proportional_width = width;
971 client->proportional_height = width / max_aspect;
974 client->force_reconfigure = true;
976 if (client->container != NULL) {
977 render_container(conn, client->container);
985 * Handles the WM_HINTS property for extracting the urgency state of the window.
988 int handle_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
989 xcb_atom_t name, xcb_get_property_reply_t *reply) {
990 Client *client = table_get(&by_child, window);
991 if (client == NULL) {
992 DLOG("Received WM_HINTS for unknown client\n");
995 xcb_wm_hints_t hints;
998 if (!xcb_get_wm_hints_from_reply(&hints, reply))
1001 if (!xcb_get_wm_hints_reply(conn, xcb_get_wm_hints_unchecked(conn, client->child), &hints, NULL))
1005 Client *last_focused = SLIST_FIRST(&(c_ws->focus_stack));
1006 if (!client->urgent && client == last_focused) {
1007 DLOG("Ignoring urgency flag for current client\n");
1011 /* Update the flag on the client directly */
1012 client->urgent = (xcb_wm_hints_get_urgency(&hints) != 0);
1014 LOG("Urgency flag changed to %d\n", client->urgent);
1016 workspace_update_urgent_flag(client->workspace);
1017 redecorate_window(conn, client);
1019 /* If the workspace this client is on is not visible, we need to redraw
1020 * the workspace bar */
1021 if (!workspace_is_visible(client->workspace)) {
1022 Output *output = client->workspace->output;
1023 render_workspace(conn, output, output->current_workspace);
1031 * Handles the transient for hints set by a window, signalizing that this window is a popup window
1032 * for some other window.
1034 * See ICCCM 4.1.2.6 for more details
1037 int handle_transient_for(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
1038 xcb_atom_t name, xcb_get_property_reply_t *reply) {
1039 Client *client = table_get(&by_child, window);
1040 if (client == NULL) {
1041 DLOG("No such client\n");
1045 xcb_window_t transient_for;
1047 if (reply != NULL) {
1048 if (!xcb_get_wm_transient_for_from_reply(&transient_for, reply))
1051 if (!xcb_get_wm_transient_for_reply(conn, xcb_get_wm_transient_for_unchecked(conn, window),
1052 &transient_for, NULL))
1056 if (client->floating == FLOATING_AUTO_OFF) {
1057 DLOG("This is a popup window, putting into floating\n");
1058 toggle_floating_mode(conn, client, true);
1065 * Handles changes of the WM_CLIENT_LEADER atom which specifies if this is a
1066 * toolwindow (or similar) and to which window it belongs (logical parent).
1069 int handle_clientleader_change(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
1070 xcb_atom_t name, xcb_get_property_reply_t *prop) {
1072 prop = xcb_get_property_reply(conn, xcb_get_property_unchecked(conn,
1073 false, window, WM_CLIENT_LEADER, WINDOW, 0, 32), NULL);
1078 Client *client = table_get(&by_child, window);
1082 xcb_window_t *leader = xcb_get_property_value(prop);
1086 DLOG("Client leader changed to %08x\n", *leader);
1088 client->leader = *leader;