4 * i3 - an improved dynamic tiling window manager
6 * © 2009 Michael Stapelberg and contributors
8 * See file LICENSE for license information.
18 #include <xcb/xcb_atom.h>
19 #include <xcb/xcb_icccm.h>
21 #include <X11/XKBlib.h>
38 #include "workspace.h"
40 #include "container.h"
42 /* After mapping/unmapping windows, a notify event is generated. However, we don’t want it,
43 since it’d trigger an infinite loop of switching between the different windows when
44 changing workspaces */
45 static SLIST_HEAD(ignore_head, Ignore_Event) ignore_events;
47 static void add_ignore_event(const int sequence) {
48 struct Ignore_Event *event = smalloc(sizeof(struct Ignore_Event));
50 event->sequence = sequence;
51 event->added = time(NULL);
53 SLIST_INSERT_HEAD(&ignore_events, event, ignore_events);
57 * Checks if the given sequence is ignored and returns true if so.
60 static bool event_is_ignored(const int sequence) {
61 struct Ignore_Event *event;
62 time_t now = time(NULL);
63 for (event = SLIST_FIRST(&ignore_events); event != SLIST_END(&ignore_events);) {
64 if ((now - event->added) > 5) {
65 struct Ignore_Event *save = event;
66 event = SLIST_NEXT(event, ignore_events);
67 SLIST_REMOVE(&ignore_events, save, Ignore_Event, ignore_events);
69 } else event = SLIST_NEXT(event, ignore_events);
72 SLIST_FOREACH(event, &ignore_events, ignore_events) {
73 if (event->sequence == sequence) {
74 SLIST_REMOVE(&ignore_events, event, Ignore_Event, ignore_events);
84 * Due to bindings like Mode_switch + <a>, we need to bind some keys in XCB_GRAB_MODE_SYNC.
85 * Therefore, we just replay all key presses.
88 int handle_key_release(void *ignored, xcb_connection_t *conn, xcb_key_release_event_t *event) {
89 xcb_allow_events(conn, XCB_ALLOW_REPLAY_KEYBOARD, event->time);
95 * There was a key press. We compare this key code with our bindings table and pass
96 * the bound action to parse_command().
99 int handle_key_press(void *ignored, xcb_connection_t *conn, xcb_key_press_event_t *event) {
100 DLOG("Keypress %d, state raw = %d\n", event->detail, event->state);
102 /* Remove the numlock bit, all other bits are modifiers we can bind to */
103 uint16_t state_filtered = event->state & ~(xcb_numlock_mask | XCB_MOD_MASK_LOCK);
104 DLOG("(removed numlock, state = %d)\n", state_filtered);
105 /* Only use the lower 8 bits of the state (modifier masks) so that mouse
106 * button masks are filtered out */
107 state_filtered &= 0xFF;
108 DLOG("(removed upper 8 bits, state = %d)\n", state_filtered);
111 /* We need to get the keysym group (There are group 1 to group 4, each holding
112 two keysyms (without shift and with shift) using Xkb because X fails to
113 provide them reliably (it works in Xephyr, it does not in real X) */
115 if (XkbGetState(xkbdpy, XkbUseCoreKbd, &state) == Success && (state.group+1) == 2)
116 state_filtered |= BIND_MODE_SWITCH;
119 DLOG("(checked mode_switch, state %d)\n", state_filtered);
121 /* Find the binding */
123 TAILQ_FOREACH(bind, bindings, bindings) {
124 /* First compare the modifiers */
125 if (bind->mods != state_filtered)
128 /* If a symbol was specified by the user, we need to look in
129 * the array of translated keycodes for the event’s keycode */
130 if (bind->symbol != NULL) {
131 if (memmem(bind->translated_to,
132 bind->number_keycodes * sizeof(xcb_keycode_t),
133 &(event->detail), sizeof(xcb_keycode_t)) != NULL)
136 /* This case is easier: The user specified a keycode */
137 if (bind->keycode == event->detail)
142 /* No match? Then it was an actively grabbed key, that is with Mode_switch, and
143 the user did not press Mode_switch, so just pass it… */
144 if (bind == TAILQ_END(bindings)) {
145 xcb_allow_events(conn, ReplayKeyboard, event->time);
150 parse_command(conn, bind->command);
151 if (state_filtered & BIND_MODE_SWITCH) {
152 DLOG("Mode_switch -> allow_events(SyncKeyboard)\n");
153 xcb_allow_events(conn, SyncKeyboard, event->time);
160 * Called with coordinates of an enter_notify event or motion_notify event
161 * to check if the user crossed virtual screen boundaries and adjust the
162 * current workspace, if so.
165 static void check_crossing_screen_boundary(uint32_t x, uint32_t y) {
168 if ((screen = get_screen_containing(x, y)) == NULL) {
169 ELOG("ERROR: No such screen\n");
172 if (screen == c_ws->screen)
175 c_ws->current_row = current_row;
176 c_ws->current_col = current_col;
177 c_ws = screen->current_workspace;
178 current_row = c_ws->current_row;
179 current_col = c_ws->current_col;
180 DLOG("We're now on virtual screen number %d\n", screen->num);
184 * When the user moves the mouse pointer onto a window, this callback gets called.
187 int handle_enter_notify(void *ignored, xcb_connection_t *conn, xcb_enter_notify_event_t *event) {
188 DLOG("enter_notify for %08x, mode = %d, detail %d, serial %d\n", event->event, event->mode, event->detail, event->sequence);
189 if (event->mode != XCB_NOTIFY_MODE_NORMAL) {
190 DLOG("This was not a normal notify, ignoring\n");
193 /* Some events are not interesting, because they were not generated actively by the
194 user, but by reconfiguration of windows */
195 if (event_is_ignored(event->sequence))
198 /* This was either a focus for a client’s parent (= titlebar)… */
199 Client *client = table_get(&by_parent, event->event);
200 /* …or the client itself */
202 client = table_get(&by_child, event->event);
204 /* Check for stack windows */
205 if (client == NULL) {
206 struct Stack_Window *stack_win;
207 SLIST_FOREACH(stack_win, &stack_wins, stack_windows)
208 if (stack_win->window == event->event) {
209 client = stack_win->container->currently_focused;
215 /* If not, then the user moved his cursor to the root window. In that case, we adjust c_ws */
216 if (client == NULL) {
217 DLOG("Getting screen at %d x %d\n", event->root_x, event->root_y);
218 check_crossing_screen_boundary(event->root_x, event->root_y);
222 /* Do plausibility checks: This event may be useless for us if it occurs on a window
223 which is in a stacked container but not the focused one */
224 if (client->container != NULL &&
225 client->container->mode == MODE_STACK &&
226 client->container->currently_focused != client) {
227 DLOG("Plausibility check says: no\n");
231 if (client->workspace != c_ws && client->workspace->screen == c_ws->screen) {
232 /* This can happen when a client gets assigned to a different workspace than
233 * the current one (see src/mainx.c:reparent_window). Shortly after it was created,
234 * an enter_notify will follow. */
235 DLOG("enter_notify for a client on a different workspace but the same screen, ignoring\n");
239 set_focus(conn, client, false);
245 * When the user moves the mouse but does not change the active window
246 * (e.g. when having no windows opened but moving mouse on the root screen
247 * and crossing virtual screen boundaries), this callback gets called.
250 int handle_motion_notify(void *ignored, xcb_connection_t *conn, xcb_motion_notify_event_t *event) {
251 /* Skip events where the pointer was over a child window, we are only
252 * interested in events on the root window. */
253 if (event->child != 0)
256 check_crossing_screen_boundary(event->root_x, event->root_y);
262 * Called when the keyboard mapping changes (for example by using Xmodmap),
263 * we need to update our key bindings then (re-translate symbols).
266 int handle_mapping_notify(void *ignored, xcb_connection_t *conn, xcb_mapping_notify_event_t *event) {
267 if (event->request != XCB_MAPPING_KEYBOARD &&
268 event->request != XCB_MAPPING_MODIFIER)
271 DLOG("Received mapping_notify for keyboard or modifier mapping, re-grabbing keys\n");
272 xcb_refresh_keyboard_mapping(keysyms, event);
274 xcb_get_numlock_mask(conn);
276 ungrab_all_keys(conn);
283 * A new window appeared on the screen (=was mapped), so let’s manage it.
286 int handle_map_request(void *prophs, xcb_connection_t *conn, xcb_map_request_event_t *event) {
287 xcb_get_window_attributes_cookie_t cookie;
289 cookie = xcb_get_window_attributes_unchecked(conn, event->window);
291 DLOG("window = 0x%08x, serial is %d.\n", event->window, event->sequence);
292 add_ignore_event(event->sequence);
294 manage_window(prophs, conn, event->window, cookie, false);
299 * Configure requests are received when the application wants to resize windows on their own.
301 * We generate a synthethic configure notify event to signalize the client its "new" position.
304 int handle_configure_request(void *prophs, xcb_connection_t *conn, xcb_configure_request_event_t *event) {
305 DLOG("window 0x%08x wants to be at %dx%d with %dx%d\n",
306 event->window, event->x, event->y, event->width, event->height);
308 Client *client = table_get(&by_child, event->window);
309 if (client == NULL) {
313 #define COPY_MASK_MEMBER(mask_member, event_member) do { \
314 if (event->value_mask & mask_member) { \
315 mask |= mask_member; \
316 values[c++] = event->event_member; \
320 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_X, x);
321 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_Y, y);
322 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_WIDTH, width);
323 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_HEIGHT, height);
324 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_BORDER_WIDTH, border_width);
325 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_SIBLING, sibling);
326 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_STACK_MODE, stack_mode);
328 xcb_configure_window(conn, event->window, mask, values);
334 if (client->fullscreen) {
335 DLOG("Client is in fullscreen mode\n");
337 Rect child_rect = client->workspace->rect;
338 child_rect.x = child_rect.y = 0;
339 fake_configure_notify(conn, child_rect, client->child);
344 /* Floating clients can be reconfigured */
345 if (client_is_floating(client)) {
346 i3Font *font = load_font(conn, config.font);
347 int mode = (client->container != NULL ? client->container->mode : MODE_DEFAULT);
349 if (event->value_mask & XCB_CONFIG_WINDOW_X)
350 client->rect.x = event->x;
351 if (event->value_mask & XCB_CONFIG_WINDOW_Y)
352 client->rect.y = event->y;
353 if (event->value_mask & XCB_CONFIG_WINDOW_WIDTH) {
354 if (mode == MODE_STACK || mode == MODE_TABBED) {
355 client->rect.width = event->width + 2 + 2;
357 if (client->titlebar_position == TITLEBAR_OFF && client->borderless)
358 client->rect.width = event->width;
359 else if (client->titlebar_position == TITLEBAR_OFF && !client->borderless)
360 client->rect.width = event->width + (1 + 1);
361 else client->rect.width = event->width + (2 + 2);
364 if (event->value_mask & XCB_CONFIG_WINDOW_HEIGHT) {
365 if (mode == MODE_STACK || mode == MODE_TABBED) {
366 client->rect.height = event->height + 2;
368 if (client->titlebar_position == TITLEBAR_OFF && client->borderless)
369 client->rect.height = event->height;
370 else if (client->titlebar_position == TITLEBAR_OFF && !client->borderless)
371 client->rect.height = event->height + (1 + 1);
372 else client->rect.height = event->height + (font->height + 2 + 2) + 2;
376 DLOG("Accepted new position/size for floating client: (%d, %d) size %d x %d\n",
377 client->rect.x, client->rect.y, client->rect.width, client->rect.height);
379 /* Push the new position/size to X11 */
380 reposition_client(conn, client);
381 resize_client(conn, client);
387 /* Dock clients can be reconfigured in their height */
389 DLOG("Reconfiguring height of this dock client\n");
391 if (!(event->value_mask & XCB_CONFIG_WINDOW_HEIGHT)) {
392 DLOG("Ignoring configure request, no height given\n");
396 client->desired_height = event->height;
397 render_workspace(conn, c_ws->screen, c_ws);
403 if (client->fullscreen) {
404 DLOG("Client is in fullscreen mode\n");
406 Rect child_rect = client->container->workspace->rect;
407 child_rect.x = child_rect.y = 0;
408 fake_configure_notify(conn, child_rect, client->child);
413 fake_absolute_configure_notify(conn, client);
419 * Configuration notifies are only handled because we need to set up ignore for the following
420 * enter notify events
423 int handle_configure_event(void *prophs, xcb_connection_t *conn, xcb_configure_notify_event_t *event) {
424 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
426 /* We ignore this sequence twice because events for child and frame should be ignored */
427 add_ignore_event(event->sequence);
428 add_ignore_event(event->sequence);
430 if (event->event == root) {
431 DLOG("event->x = %d, ->y = %d, ->width = %d, ->height = %d\n", event->x, event->y, event->width, event->height);
432 DLOG("reconfigure of the root window, need to xinerama\n");
433 /* FIXME: Somehow, this is occuring too often. Therefore, we check for 0/0,
434 but is there a better way? */
435 if (event->x == 0 && event->y == 0)
436 xinerama_requery_screens(conn);
444 * Our window decorations were unmapped. That means, the window will be killed now,
445 * so we better clean up before.
448 int handle_unmap_notify_event(void *data, xcb_connection_t *conn, xcb_unmap_notify_event_t *event) {
449 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
451 add_ignore_event(event->sequence);
453 Client *client = table_get(&by_child, event->window);
454 /* First, we need to check if the client is awaiting an unmap-request which
455 was generated by us reparenting the window. In that case, we just ignore it. */
456 if (client != NULL && client->awaiting_useless_unmap) {
457 client->awaiting_useless_unmap = false;
461 DLOG("event->window = %08x, event->event = %08x\n", event->window, event->event);
462 DLOG("UnmapNotify for 0x%08x (received from 0x%08x)\n", event->window, event->event);
463 if (client == NULL) {
464 DLOG("not a managed window. Ignoring.\n");
466 /* This was most likely the destroyed frame of a client which is
467 * currently being unmapped, so we add this sequence (again!) to
468 * the ignore list (enter_notify events will get sent for both,
469 * the child and its frame). */
470 add_ignore_event(event->sequence);
475 client = table_remove(&by_child, event->window);
477 /* If this was the fullscreen client, we need to unset it */
478 if (client->fullscreen)
479 client->workspace->fullscreen_client = NULL;
481 /* Clients without a container are either floating or dock windows */
482 if (client->container != NULL) {
483 Container *con = client->container;
485 /* Remove the client from the list of clients */
486 client_remove_from_container(conn, client, con, true);
488 /* Set focus to the last focused client in this container */
489 con->currently_focused = get_last_focused_client(conn, con, NULL);
491 /* Only if this is the active container, we need to really change focus */
492 if ((con->currently_focused != NULL) && ((con == CUR_CELL) || client->fullscreen))
493 set_focus(conn, con->currently_focused, true);
494 } else if (client_is_floating(client)) {
495 DLOG("Removing from floating clients\n");
496 TAILQ_REMOVE(&(client->workspace->floating_clients), client, floating_clients);
497 SLIST_REMOVE(&(client->workspace->focus_stack), client, Client, focus_clients);
501 DLOG("Removing from dock clients\n");
502 SLIST_REMOVE(&(client->workspace->screen->dock_clients), client, Client, dock_clients);
505 DLOG("child of 0x%08x.\n", client->frame);
506 xcb_reparent_window(conn, client->child, root, 0, 0);
508 client_unmap(conn, client);
510 xcb_destroy_window(conn, client->frame);
512 table_remove(&by_parent, client->frame);
514 if (client->container != NULL) {
515 Workspace *workspace = client->container->workspace;
516 cleanup_table(conn, workspace);
517 fix_colrowspan(conn, workspace);
520 /* Let’s see how many clients there are left on the workspace to delete it if it’s empty */
521 bool workspace_empty = SLIST_EMPTY(&(client->workspace->focus_stack));
522 bool workspace_active = false;
523 Client *to_focus = (!workspace_empty ? SLIST_FIRST(&(client->workspace->focus_stack)) : NULL);
525 /* If this workspace is currently active, we don’t delete it */
527 TAILQ_FOREACH(screen, virtual_screens, screens)
528 if (screen->current_workspace == client->workspace) {
529 workspace_active = true;
530 workspace_empty = false;
535 client->workspace->screen = NULL;
537 /* Remove the urgency flag if set */
538 client->urgent = false;
539 workspace_update_urgent_flag(client->workspace);
541 FREE(client->window_class);
547 /* Ensure the focus is set to the next client in the focus stack or to
548 * the screen itself (if we do not focus the screen, it can happen that
549 * the focus is "nowhere" and thus keypress events will not be received
550 * by i3, thus the user cannot use any hotkeys). */
551 if (workspace_active) {
552 if (to_focus != NULL)
553 set_focus(conn, to_focus, true);
555 DLOG("Restoring focus to root screen\n");
556 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, root, XCB_CURRENT_TIME);
565 * Called when a window changes its title
568 int handle_windowname_change(void *data, xcb_connection_t *conn, uint8_t state,
569 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
570 if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
571 DLOG("_NET_WM_NAME not specified, not changing\n");
574 Client *client = table_get(&by_child, window);
578 /* Save the old pointer to make the update atomic */
581 asprintf(&new_name, "%.*s", xcb_get_property_value_length(prop), (char*)xcb_get_property_value(prop));
582 /* Convert it to UCS-2 here for not having to convert it later every time we want to pass it to X */
583 char *ucs2_name = convert_utf8_to_ucs2(new_name, &new_len);
584 LOG("_NET_WM_NAME changed to \"%s\"\n", new_name);
587 /* Check if they are the same and don’t update if so.
588 Note the use of new_len * 2 to check all bytes as each glyph takes 2 bytes.
589 Also note the use of memcmp() instead of strncmp() because the latter stops on nullbytes,
590 but UCS-2 uses nullbytes to fill up glyphs which only use one byte. */
591 if ((new_len == client->name_len) &&
592 (client->name != NULL) &&
593 (memcmp(client->name, ucs2_name, new_len * 2) == 0)) {
598 char *old_name = client->name;
599 client->name = ucs2_name;
600 client->name_len = new_len;
601 client->uses_net_wm_name = true;
605 /* If the client is a dock window, we don’t need to render anything */
609 int mode = container_mode(client->container, true);
610 if (mode == MODE_STACK || mode == MODE_TABBED)
611 render_container(conn, client->container);
612 else decorate_window(conn, client, client->frame, client->titlegc, 0, 0);
619 * We handle legacy window names (titles) which are in COMPOUND_TEXT encoding. However, we
620 * just pass them along, so when containing non-ASCII characters, those will be rendering
621 * incorrectly. In order to correctly render unicode window titles in i3, an application
622 * has to set _NET_WM_NAME, which is in UTF-8 encoding.
624 * On every update, a message is put out to the user, so he may improve the situation and
625 * update applications which display filenames in their title to correctly use
626 * _NET_WM_NAME and therefore support unicode.
629 int handle_windowname_change_legacy(void *data, xcb_connection_t *conn, uint8_t state,
630 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
631 if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
632 DLOG("prop == NULL\n");
635 Client *client = table_get(&by_child, window);
639 /* Client capable of _NET_WM_NAME, ignore legacy name changes */
640 if (client->uses_net_wm_name)
643 /* Save the old pointer to make the update atomic */
645 if (asprintf(&new_name, "%.*s", xcb_get_property_value_length(prop), (char*)xcb_get_property_value(prop)) == -1) {
646 perror("Could not get old name");
647 DLOG("Could not get old name\n");
650 /* Convert it to UCS-2 here for not having to convert it later every time we want to pass it to X */
651 LOG("WM_NAME changed to \"%s\"\n", new_name);
653 /* Check if they are the same and don’t update if so. */
654 if (client->name != NULL &&
655 strlen(new_name) == strlen(client->name) &&
656 strcmp(client->name, new_name) == 0) {
661 LOG("Using legacy window title. Note that in order to get Unicode window titles in i3, "
662 "the application has to set _NET_WM_NAME which is in UTF-8 encoding.\n");
664 char *old_name = client->name;
665 client->name = new_name;
666 client->name_len = -1;
668 if (old_name != NULL)
671 /* If the client is a dock window, we don’t need to render anything */
675 if (client->container != NULL &&
676 (client->container->mode == MODE_STACK ||
677 client->container->mode == MODE_TABBED))
678 render_container(conn, client->container);
679 else decorate_window(conn, client, client->frame, client->titlegc, 0, 0);
686 * Updates the client’s WM_CLASS property
689 int handle_windowclass_change(void *data, xcb_connection_t *conn, uint8_t state,
690 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
691 if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
692 DLOG("prop == NULL\n");
695 Client *client = table_get(&by_child, window);
699 if (asprintf(&new_class, "%.*s", xcb_get_property_value_length(prop), (char*)xcb_get_property_value(prop)) == -1) {
700 perror("Could not get window class");
701 DLOG("Could not get window class\n");
705 LOG("WM_CLASS changed to %s\n", new_class);
706 char *old_class = client->window_class;
707 client->window_class = new_class;
710 if (!client->initialized)
713 if (strcmp(new_class, "tools") == 0 || strcmp(new_class, "Dialog") == 0) {
714 DLOG("tool/dialog window, should we put it floating?\n");
715 if (client->floating == FLOATING_AUTO_OFF)
716 toggle_floating_mode(conn, client, true);
723 * Expose event means we should redraw our windows (= title bar)
726 int handle_expose_event(void *data, xcb_connection_t *conn, xcb_expose_event_t *event) {
727 /* event->count is the number of minimum remaining expose events for this window, so we
728 skip all events but the last one */
729 if (event->count != 0)
731 DLOG("window = %08x\n", event->window);
733 Client *client = table_get(&by_parent, event->window);
734 if (client == NULL) {
735 /* There was no client in the table, so this is probably an expose event for
736 one of our stack_windows. */
737 struct Stack_Window *stack_win;
738 SLIST_FOREACH(stack_win, &stack_wins, stack_windows)
739 if (stack_win->window == event->window) {
740 render_container(conn, stack_win->container);
744 /* …or one of the bars? */
746 TAILQ_FOREACH(screen, virtual_screens, screens)
747 if (screen->bar == event->window)
755 if (container_mode(client->container, true) == MODE_DEFAULT)
756 decorate_window(conn, client, client->frame, client->titlegc, 0, 0);
758 uint32_t background_color;
760 background_color = config.client.urgent.background;
761 /* Distinguish if the window is currently focused… */
762 else if (CUR_CELL != NULL && CUR_CELL->currently_focused == client)
763 background_color = config.client.focused.background;
764 /* …or if it is the focused window in a not focused container */
765 else background_color = config.client.focused_inactive.background;
767 /* Set foreground color to current focused color, line width to 2 */
768 uint32_t values[] = {background_color, 2};
769 xcb_change_gc(conn, client->titlegc, XCB_GC_FOREGROUND | XCB_GC_LINE_WIDTH, values);
771 /* Draw the border, the ±1 is for line width = 2 */
772 xcb_point_t points[] = {{1, 0}, /* left upper edge */
773 {1, client->rect.height-1}, /* left bottom edge */
774 {client->rect.width-1, client->rect.height-1}, /* right bottom edge */
775 {client->rect.width-1, 0}}; /* right upper edge */
776 xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, client->frame, client->titlegc, 4, points);
778 /* Draw a black background */
779 xcb_change_gc_single(conn, client->titlegc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#000000"));
780 if (client->titlebar_position == TITLEBAR_OFF && !client->borderless) {
781 xcb_rectangle_t crect = {1, 0, client->rect.width - (1 + 1), client->rect.height - 1};
782 xcb_poly_fill_rectangle(conn, client->frame, client->titlegc, 1, &crect);
784 xcb_rectangle_t crect = {2, 0, client->rect.width - (2 + 2), client->rect.height - 2};
785 xcb_poly_fill_rectangle(conn, client->frame, client->titlegc, 1, &crect);
793 * Handle client messages (EWMH)
796 int handle_client_message(void *data, xcb_connection_t *conn, xcb_client_message_event_t *event) {
797 if (event->type == atoms[_NET_WM_STATE]) {
798 if (event->format != 32 || event->data.data32[1] != atoms[_NET_WM_STATE_FULLSCREEN])
801 Client *client = table_get(&by_child, event->window);
805 /* Check if the fullscreen state should be toggled */
806 if ((client->fullscreen &&
807 (event->data.data32[0] == _NET_WM_STATE_REMOVE ||
808 event->data.data32[0] == _NET_WM_STATE_TOGGLE)) ||
809 (!client->fullscreen &&
810 (event->data.data32[0] == _NET_WM_STATE_ADD ||
811 event->data.data32[0] == _NET_WM_STATE_TOGGLE)))
812 client_toggle_fullscreen(conn, client);
814 ELOG("unhandled clientmessage\n");
821 int handle_window_type(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
822 xcb_atom_t atom, xcb_get_property_reply_t *property) {
823 /* TODO: Implement this one. To do this, implement a little test program which sleep(1)s
824 before changing this property. */
825 ELOG("_NET_WM_WINDOW_TYPE changed, this is not yet implemented.\n");
830 * Handles the size hints set by a window, but currently only the part necessary for displaying
831 * clients proportionally inside their frames (mplayer for example)
833 * See ICCCM 4.1.2.3 for more details
836 int handle_normal_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
837 xcb_atom_t name, xcb_get_property_reply_t *reply) {
838 Client *client = table_get(&by_child, window);
839 if (client == NULL) {
840 DLOG("Received WM_SIZE_HINTS for unknown client\n");
843 xcb_size_hints_t size_hints;
847 /* If the hints were already in this event, use them, if not, request them */
849 xcb_get_wm_size_hints_from_reply(&size_hints, reply);
851 xcb_get_wm_normal_hints_reply(conn, xcb_get_wm_normal_hints_unchecked(conn, client->child), &size_hints, NULL);
853 if ((size_hints.flags & XCB_SIZE_HINT_P_MIN_SIZE)) {
854 // TODO: Minimum size is not yet implemented
855 //LOG("Minimum size: %d (width) x %d (height)\n", size_hints.min_width, size_hints.min_height);
858 if ((size_hints.flags & XCB_SIZE_HINT_P_RESIZE_INC)) {
859 bool changed = false;
861 if (size_hints.width_inc > 0)
862 if (client->width_increment != size_hints.width_inc) {
863 client->width_increment = size_hints.width_inc;
866 if (size_hints.height_inc > 0)
867 if (client->height_increment != size_hints.height_inc) {
868 client->height_increment = size_hints.height_inc;
873 resize_client(conn, client);
878 int base_width = 0, base_height = 0;
880 /* base_width/height are the desired size of the window.
881 We check if either the program-specified size or the program-specified
882 min-size is available */
883 if (size_hints.flags & XCB_SIZE_HINT_P_SIZE) {
884 base_width = size_hints.base_width;
885 base_height = size_hints.base_height;
886 } else if (size_hints.flags & XCB_SIZE_HINT_P_MIN_SIZE) {
887 base_width = size_hints.min_width;
888 base_height = size_hints.min_height;
891 if (base_width != client->base_width ||
892 base_height != client->base_height) {
893 client->base_width = base_width;
894 client->base_height = base_height;
895 DLOG("client's base_height changed to %d\n", base_height);
896 if (client->fullscreen)
897 DLOG("Not resizing client, it is in fullscreen mode\n");
899 resize_client(conn, client);
902 /* If no aspect ratio was set or if it was invalid, we ignore the hints */
903 if (!(size_hints.flags & XCB_SIZE_HINT_P_ASPECT) ||
904 (size_hints.min_aspect_num <= 0) ||
905 (size_hints.min_aspect_den <= 0)) {
909 double width = client->rect.width - base_width;
910 double height = client->rect.height - base_height;
911 /* Convert numerator/denominator to a double */
912 double min_aspect = (double)size_hints.min_aspect_num / size_hints.min_aspect_den;
913 double max_aspect = (double)size_hints.max_aspect_num / size_hints.min_aspect_den;
915 DLOG("Aspect ratio set: minimum %f, maximum %f\n", min_aspect, max_aspect);
916 DLOG("width = %f, height = %f\n", width, height);
918 /* Sanity checks, this is user-input, in a way */
919 if (max_aspect <= 0 || min_aspect <= 0 || height == 0 || (width / height) <= 0)
922 /* Check if we need to set proportional_* variables using the correct ratio */
923 if ((width / height) < min_aspect) {
924 client->proportional_width = width;
925 client->proportional_height = width / min_aspect;
926 } else if ((width / height) > max_aspect) {
927 client->proportional_width = width;
928 client->proportional_height = width / max_aspect;
931 client->force_reconfigure = true;
933 if (client->container != NULL) {
934 render_container(conn, client->container);
942 * Handles the WM_HINTS property for extracting the urgency state of the window.
945 int handle_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
946 xcb_atom_t name, xcb_get_property_reply_t *reply) {
947 Client *client = table_get(&by_child, window);
948 if (client == NULL) {
949 DLOG("Received WM_HINTS for unknown client\n");
952 xcb_wm_hints_t hints;
955 if (!xcb_get_wm_hints_from_reply(&hints, reply))
958 if (!xcb_get_wm_hints_reply(conn, xcb_get_wm_hints_unchecked(conn, client->child), &hints, NULL))
962 Client *last_focused = SLIST_FIRST(&(c_ws->focus_stack));
963 if (!client->urgent && client == last_focused) {
964 DLOG("Ignoring urgency flag for current client\n");
968 /* Update the flag on the client directly */
969 client->urgent = (xcb_wm_hints_get_urgency(&hints) != 0);
971 LOG("Urgency flag changed to %d\n", client->urgent);
973 workspace_update_urgent_flag(client->workspace);
974 redecorate_window(conn, client);
976 /* If the workspace this client is on is not visible, we need to redraw
977 * the workspace bar */
978 if (!workspace_is_visible(client->workspace)) {
979 i3Screen *screen = client->workspace->screen;
980 render_workspace(conn, screen, screen->current_workspace);
988 * Handles the transient for hints set by a window, signalizing that this window is a popup window
989 * for some other window.
991 * See ICCCM 4.1.2.6 for more details
994 int handle_transient_for(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
995 xcb_atom_t name, xcb_get_property_reply_t *reply) {
996 Client *client = table_get(&by_child, window);
997 if (client == NULL) {
998 DLOG("No such client\n");
1002 xcb_window_t transient_for;
1004 if (reply != NULL) {
1005 if (!xcb_get_wm_transient_for_from_reply(&transient_for, reply))
1008 if (!xcb_get_wm_transient_for_reply(conn, xcb_get_wm_transient_for_unchecked(conn, window),
1009 &transient_for, NULL))
1013 if (client->floating == FLOATING_AUTO_OFF) {
1014 DLOG("This is a popup window, putting into floating\n");
1015 toggle_floating_mode(conn, client, true);
1022 * Handles changes of the WM_CLIENT_LEADER atom which specifies if this is a
1023 * toolwindow (or similar) and to which window it belongs (logical parent).
1026 int handle_clientleader_change(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
1027 xcb_atom_t name, xcb_get_property_reply_t *prop) {
1029 prop = xcb_get_property_reply(conn, xcb_get_property_unchecked(conn,
1030 false, window, WM_CLIENT_LEADER, WINDOW, 0, 32), NULL);
1035 Client *client = table_get(&by_child, window);
1039 xcb_window_t *leader = xcb_get_property_value(prop);
1040 if (leader == NULL || *leader == 0)
1043 DLOG("Client leader changed to %08x\n", *leader);
1045 client->leader = *leader;