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>
39 /* After mapping/unmapping windows, a notify event is generated. However, we don’t want it,
40 since it’d trigger an infinite loop of switching between the different windows when
41 changing workspaces */
42 static SLIST_HEAD(ignore_head, Ignore_Event) ignore_events;
44 static void add_ignore_event(const int sequence) {
45 struct Ignore_Event *event = smalloc(sizeof(struct Ignore_Event));
47 event->sequence = sequence;
48 event->added = time(NULL);
50 LOG("Adding sequence %d to ignorelist\n", sequence);
52 SLIST_INSERT_HEAD(&ignore_events, event, ignore_events);
56 * Checks if the given sequence is ignored and returns true if so.
59 static bool event_is_ignored(const int sequence) {
60 struct Ignore_Event *event;
61 time_t now = time(NULL);
62 for (event = SLIST_FIRST(&ignore_events); event != SLIST_END(&ignore_events);) {
63 if ((now - event->added) > 5) {
64 struct Ignore_Event *save = event;
65 event = SLIST_NEXT(event, ignore_events);
66 SLIST_REMOVE(&ignore_events, save, Ignore_Event, ignore_events);
68 } else event = SLIST_NEXT(event, ignore_events);
71 SLIST_FOREACH(event, &ignore_events, ignore_events) {
72 if (event->sequence == sequence) {
73 LOG("Ignoring event (sequence %d)\n", 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 LOG("got key release, just passing\n");
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 LOG("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 LOG("(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 LOG("(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;
118 LOG("(checked mode_switch, state %d)\n", state_filtered);
120 /* Find the binding */
122 TAILQ_FOREACH(bind, &bindings, bindings)
123 if (bind->keycode == event->detail && bind->mods == state_filtered)
126 /* No match? Then it was an actively grabbed key, that is with Mode_switch, and
127 the user did not press Mode_switch, so just pass it… */
128 if (bind == TAILQ_END(&bindings)) {
129 xcb_allow_events(conn, ReplayKeyboard, event->time);
134 parse_command(conn, bind->command);
135 if (state_filtered & BIND_MODE_SWITCH) {
136 LOG("Mode_switch -> allow_events(SyncKeyboard)\n");
137 xcb_allow_events(conn, SyncKeyboard, event->time);
145 * When the user moves the mouse pointer onto a window, this callback gets called.
148 int handle_enter_notify(void *ignored, xcb_connection_t *conn, xcb_enter_notify_event_t *event) {
149 LOG("enter_notify for %08x, mode = %d, detail %d, serial %d\n", event->event, event->mode, event->detail, event->sequence);
150 if (event->mode != XCB_NOTIFY_MODE_NORMAL) {
151 LOG("This was not a normal notify, ignoring\n");
154 /* Some events are not interesting, because they were not generated actively by the
155 user, but by reconfiguration of windows */
156 if (event_is_ignored(event->sequence))
159 /* This was either a focus for a client’s parent (= titlebar)… */
160 Client *client = table_get(&by_parent, event->event);
161 /* …or the client itself */
163 client = table_get(&by_child, event->event);
165 /* Check for stack windows */
166 if (client == NULL) {
167 struct Stack_Window *stack_win;
168 SLIST_FOREACH(stack_win, &stack_wins, stack_windows)
169 if (stack_win->window == event->event) {
170 client = stack_win->container->currently_focused;
176 /* If not, then the user moved his cursor to the root window. In that case, we adjust c_ws */
177 if (client == NULL) {
178 LOG("Getting screen at %d x %d\n", event->root_x, event->root_y);
179 i3Screen *screen = get_screen_containing(event->root_x, event->root_y);
180 if (screen == NULL) {
181 LOG("ERROR: No such screen\n");
184 c_ws->current_row = current_row;
185 c_ws->current_col = current_col;
186 c_ws = &workspaces[screen->current_workspace];
187 current_row = c_ws->current_row;
188 current_col = c_ws->current_col;
189 LOG("We're now on virtual screen number %d\n", screen->num);
193 /* Do plausibility checks: This event may be useless for us if it occurs on a window
194 which is in a stacked container but not the focused one */
195 if (client->container != NULL &&
196 client->container->mode == MODE_STACK &&
197 client->container->currently_focused != client) {
198 LOG("Plausibility check says: no\n");
202 if (client->workspace != c_ws && client->workspace->screen == c_ws->screen) {
203 /* This can happen when a client gets assigned to a different workspace than
204 * the current one (see src/mainx.c:reparent_window). Shortly after it was created,
205 * an enter_notify will follow. */
206 LOG("enter_notify for a client on a different workspace but the same screen, ignoring\n");
210 set_focus(conn, client, false);
216 * Checks if the button press was on a stack window, handles focus setting and returns true
217 * if so, or false otherwise.
220 static bool button_press_stackwin(xcb_connection_t *conn, xcb_button_press_event_t *event) {
221 struct Stack_Window *stack_win;
222 SLIST_FOREACH(stack_win, &stack_wins, stack_windows) {
223 if (stack_win->window != event->event)
226 /* A stack window was clicked, we check if it was button4 or button5
227 which are scroll up / scroll down. */
228 if (event->detail == XCB_BUTTON_INDEX_4 || event->detail == XCB_BUTTON_INDEX_5) {
229 direction_t direction = (event->detail == XCB_BUTTON_INDEX_4 ? D_UP : D_DOWN);
230 focus_window_in_container(conn, CUR_CELL, direction);
234 /* It was no scrolling, so we calculate the destination client by
235 dividing the Y position of the event through the height of a window
236 decoration and then set the focus to this client. */
237 i3Font *font = load_font(conn, config.font);
238 int decoration_height = (font->height + 2 + 2);
239 int destination = (event->event_y / decoration_height),
243 LOG("Click on stack_win for client %d\n", destination);
244 CIRCLEQ_FOREACH(client, &(stack_win->container->clients), clients)
245 if (c++ == destination) {
246 set_focus(conn, client, true);
257 * Checks if the button press was on a bar, switches to the workspace and returns true
258 * if so, or false otherwise.
261 static bool button_press_bar(xcb_connection_t *conn, xcb_button_press_event_t *event) {
263 TAILQ_FOREACH(screen, virtual_screens, screens) {
264 if (screen->bar != event->event)
267 LOG("Click on a bar\n");
269 /* Check if the button was one of button4 or button5 (scroll up / scroll down) */
270 if (event->detail == XCB_BUTTON_INDEX_4 || event->detail == XCB_BUTTON_INDEX_5) {
271 int add = (event->detail == XCB_BUTTON_INDEX_4 ? -1 : 1);
272 for (int i = c_ws->num + add; (i >= 0) && (i < 10); i += add)
273 if (workspaces[i].screen == screen) {
274 show_workspace(conn, i+1);
279 i3Font *font = load_font(conn, config.font);
280 int workspace = event->event_x / (font->height + 6),
282 /* Because workspaces can be on different screens, we need to loop
283 through all of them and decide to count it based on its ->screen */
284 for (int i = 0; i < 10; i++)
285 if ((workspaces[i].screen == screen) && (c++ == workspace)) {
286 show_workspace(conn, i+1);
295 int handle_button_press(void *ignored, xcb_connection_t *conn, xcb_button_press_event_t *event) {
296 LOG("button press!\n");
297 LOG("state = %d\n", event->state);
298 /* This was either a focus for a client’s parent (= titlebar)… */
299 Client *client = table_get(&by_child, event->event);
300 bool border_click = false;
301 if (client == NULL) {
302 client = table_get(&by_parent, event->event);
305 /* See if this was a click with the configured modifier. If so, we need
306 * to move around the client if it was floating. if not, we just process
308 if (config.floating_modifier != 0 &&
309 (event->state & config.floating_modifier) != 0) {
310 if (client == NULL) {
311 LOG("Not handling, Mod1 was pressed and no client found\n");
314 if (client_is_floating(client)) {
315 floating_drag_window(conn, client, event);
320 if (client == NULL) {
321 /* The client was neither on a client’s titlebar nor on a client itself, maybe on a stack_window? */
322 if (button_press_stackwin(conn, event))
326 if (button_press_bar(conn, event))
329 LOG("Could not handle this button press\n");
333 /* Set focus in any case */
334 set_focus(conn, client, true);
336 /* Let’s see if this was on the borders (= resize). If not, we’re done */
337 LOG("press button on x=%d, y=%d\n", event->event_x, event->event_y);
338 resize_orientation_t orientation = O_VERTICAL;
339 Container *con = client->container;
343 LOG("dock. done.\n");
344 xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time);
349 LOG("event->event_x = %d, client->rect.width = %d\n", event->event_x, client->rect.width);
352 LOG("client. done.\n");
353 xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time);
354 /* Floating clients should be raised on click */
355 if (client_is_floating(client))
356 xcb_raise_window(conn, client->frame);
361 /* Don’t handle events inside the titlebar, only borders are interesting */
362 i3Font *font = load_font(conn, config.font);
363 if (event->event_y >= 2 && event->event_y <= (font->height + 2 + 2)) {
364 LOG("click on titlebar\n");
366 /* Floating clients can be dragged by grabbing their titlebar */
367 if (client_is_floating(client)) {
368 /* Firstly, we raise it. Maybe the user just wanted to raise it without grabbing */
369 xcb_raise_window(conn, client->frame);
372 floating_drag_window(conn, client, event);
377 if (client_is_floating(client))
378 return floating_border_click(conn, client, event);
380 if (event->event_y < 2) {
381 /* This was a press on the top border */
384 first = con->row - 1;
386 orientation = O_HORIZONTAL;
387 } else if (event->event_y >= (client->rect.height - 2)) {
389 first = con->row + (con->rowspan - 1);
390 if (!cell_exists(con->col, first) ||
391 (first == (con->workspace->rows-1)))
395 orientation = O_HORIZONTAL;
396 } else if (event->event_x <= 2) {
401 first = con->col - 1;
403 } else if (event->event_x > 2) {
405 first = con->col + (con->colspan - 1);
406 LOG("column %d\n", first);
408 if (!cell_exists(first, con->row) ||
409 (first == (con->workspace->cols-1)))
415 return resize_graphical_handler(conn, con->workspace, first, second, orientation, event);
419 * A new window appeared on the screen (=was mapped), so let’s manage it.
422 int handle_map_request(void *prophs, xcb_connection_t *conn, xcb_map_request_event_t *event) {
423 xcb_get_window_attributes_cookie_t cookie;
424 xcb_get_window_attributes_reply_t *reply;
426 cookie = xcb_get_window_attributes_unchecked(conn, event->window);
428 if ((reply = xcb_get_window_attributes_reply(conn, cookie, NULL)) == NULL) {
429 LOG("Could not get window attributes\n");
433 window_attributes_t wa = { TAG_VALUE };
434 LOG("override_redirect = %d\n", reply->override_redirect);
435 wa.u.override_redirect = reply->override_redirect;
436 LOG("window = 0x%08x, serial is %d.\n", event->window, event->sequence);
437 add_ignore_event(event->sequence);
439 manage_window(prophs, conn, event->window, wa);
444 * Configure requests are received when the application wants to resize windows on their own.
446 * We generate a synthethic configure notify event to signalize the client its "new" position.
449 int handle_configure_request(void *prophs, xcb_connection_t *conn, xcb_configure_request_event_t *event) {
450 LOG("configure-request, serial %d\n", event->sequence);
451 LOG("event->window = %08x\n", event->window);
452 LOG("application wants to be at %dx%d with %dx%d\n", event->x, event->y, event->width, event->height);
454 Client *client = table_get(&by_child, event->window);
455 if (client == NULL) {
456 LOG("This client is not mapped, so we don't care and just tell the client that he will get its size\n");
460 #define COPY_MASK_MEMBER(mask_member, event_member) do { \
461 if (event->value_mask & mask_member) { \
462 mask |= mask_member; \
463 values[c++] = event->event_member; \
467 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_X, x);
468 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_Y, y);
469 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_WIDTH, width);
470 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_HEIGHT, height);
471 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_BORDER_WIDTH, border_width);
472 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_SIBLING, sibling);
473 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_STACK_MODE, stack_mode);
475 xcb_configure_window(conn, event->window, mask, values);
481 /* Floating clients can be reconfigured */
482 if (client_is_floating(client)) {
483 i3Font *font = load_font(conn, config.font);
485 if (event->value_mask & XCB_CONFIG_WINDOW_X)
486 client->rect.x = event->x;
487 if (event->value_mask & XCB_CONFIG_WINDOW_Y)
488 client->rect.y = event->y;
489 if (event->value_mask & XCB_CONFIG_WINDOW_WIDTH)
490 client->rect.width = event->width + 2 + 2;
491 if (event->value_mask & XCB_CONFIG_WINDOW_HEIGHT)
492 client->rect.height = event->height + (font->height + 2 + 2) + 2;
494 LOG("Accepted new position/size for floating client: (%d, %d) size %d x %d\n",
495 client->rect.x, client->rect.y, client->rect.width, client->rect.height);
497 /* Push the new position/size to X11 */
498 reposition_client(conn, client);
499 resize_client(conn, client);
505 if (client->fullscreen) {
506 LOG("Client is in fullscreen mode\n");
508 Rect child_rect = client->container->workspace->rect;
509 child_rect.x = child_rect.y = 0;
510 fake_configure_notify(conn, child_rect, client->child);
515 if (client->fullscreen) {
516 LOG("Client is in fullscreen mode\n");
518 Rect child_rect = client->container->workspace->rect;
519 child_rect.x = child_rect.y = 0;
520 fake_configure_notify(conn, child_rect, client->child);
525 fake_absolute_configure_notify(conn, client);
531 * Configuration notifies are only handled because we need to set up ignore for the following
532 * enter notify events
535 int handle_configure_event(void *prophs, xcb_connection_t *conn, xcb_configure_notify_event_t *event) {
536 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
538 LOG("handle_configure_event for window %08x\n", event->window);
539 LOG("event->type = %d, \n", event->response_type);
540 LOG("event->x = %d, ->y = %d, ->width = %d, ->height = %d\n", event->x, event->y, event->width, event->height);
542 /* We ignore this sequence twice because events for child and frame should be ignored */
543 add_ignore_event(event->sequence);
544 add_ignore_event(event->sequence);
546 if (event->event == root) {
547 LOG("reconfigure of the root window, need to xinerama\n");
548 /* FIXME: Somehow, this is occuring too often. Therefore, we check for 0/0,
549 but is there a better way? */
550 if (event->x == 0 && event->y == 0)
551 xinerama_requery_screens(conn);
559 * Our window decorations were unmapped. That means, the window will be killed now,
560 * so we better clean up before.
563 int handle_unmap_notify_event(void *data, xcb_connection_t *conn, xcb_unmap_notify_event_t *event) {
564 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
566 add_ignore_event(event->sequence);
568 Client *client = table_get(&by_child, event->window);
569 /* First, we need to check if the client is awaiting an unmap-request which
570 was generated by us reparenting the window. In that case, we just ignore it. */
571 if (client != NULL && client->awaiting_useless_unmap) {
572 LOG("Dropping this unmap request, it was generated by reparenting\n");
573 client->awaiting_useless_unmap = false;
577 LOG("event->window = %08x, event->event = %08x\n", event->window, event->event);
578 LOG("UnmapNotify for 0x%08x (received from 0x%08x)\n", event->window, event->event);
579 if (client == NULL) {
580 LOG("not a managed window. Ignoring.\n");
582 /* This was most likely the destroyed frame of a client which is
583 * currently being unmapped, so we add this sequence (again!) to
584 * the ignore list (enter_notify events will get sent for both,
585 * the child and its frame). */
586 add_ignore_event(event->sequence);
591 client = table_remove(&by_child, event->window);
593 /* If this was the fullscreen client, we need to unset it */
594 if (client->fullscreen)
595 client->workspace->fullscreen_client = NULL;
597 /* Clients without a container are either floating or dock windows */
598 if (client->container != NULL) {
599 Container *con = client->container;
601 /* Remove the client from the list of clients */
602 client_remove_from_container(conn, client, con, true);
604 /* Set focus to the last focused client in this container */
605 con->currently_focused = get_last_focused_client(conn, con, NULL);
607 /* Only if this is the active container, we need to really change focus */
608 if ((con->currently_focused != NULL) && ((con == CUR_CELL) || client->fullscreen))
609 set_focus(conn, con->currently_focused, true);
610 } else if (client_is_floating(client)) {
611 LOG("Removing from floating clients\n");
612 TAILQ_REMOVE(&(client->workspace->floating_clients), client, floating_clients);
613 SLIST_REMOVE(&(client->workspace->focus_stack), client, Client, focus_clients);
617 LOG("Removing from dock clients\n");
618 SLIST_REMOVE(&(client->workspace->screen->dock_clients), client, Client, dock_clients);
621 LOG("child of 0x%08x.\n", client->frame);
622 xcb_reparent_window(conn, client->child, root, 0, 0);
623 xcb_destroy_window(conn, client->frame);
625 table_remove(&by_parent, client->frame);
627 if (client->container != NULL) {
628 Workspace *workspace = client->container->workspace;
629 cleanup_table(conn, workspace);
630 fix_colrowspan(conn, workspace);
633 /* Let’s see how many clients there are left on the workspace to delete it if it’s empty */
634 bool workspace_empty = SLIST_EMPTY(&(client->workspace->focus_stack));
635 bool workspace_active = false;
636 Client *to_focus = (!workspace_empty ? SLIST_FIRST(&(client->workspace->focus_stack)) : NULL);
638 /* If this workspace is currently active, we don’t delete it */
640 TAILQ_FOREACH(screen, virtual_screens, screens)
641 if (screen->current_workspace == client->workspace->num) {
642 workspace_active = true;
643 workspace_empty = false;
647 if (workspace_empty) {
648 LOG("setting ws to NULL for workspace %d (%p)\n", client->workspace->num,
650 client->workspace->screen = NULL;
653 FREE(client->window_class);
659 /* Ensure the focus is set to the next client in the focus stack */
660 if (workspace_active && to_focus != NULL)
661 set_focus(conn, to_focus, true);
667 * Called when a window changes its title
670 int handle_windowname_change(void *data, xcb_connection_t *conn, uint8_t state,
671 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
672 LOG("window's name changed.\n");
673 if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
674 LOG("_NET_WM_NAME not specified, not changing\n");
677 Client *client = table_get(&by_child, window);
681 /* Save the old pointer to make the update atomic */
684 asprintf(&new_name, "%.*s", xcb_get_property_value_length(prop), (char*)xcb_get_property_value(prop));
685 /* Convert it to UCS-2 here for not having to convert it later every time we want to pass it to X */
686 char *ucs2_name = convert_utf8_to_ucs2(new_name, &new_len);
687 LOG("Name should change to \"%s\"\n", new_name);
690 /* Check if they are the same and don’t update if so.
691 Note the use of new_len * 2 to check all bytes as each glyph takes 2 bytes.
692 Also note the use of memcmp() instead of strncmp() because the latter stops on nullbytes,
693 but UCS-2 uses nullbytes to fill up glyphs which only use one byte. */
694 if ((new_len == client->name_len) &&
695 (client->name != NULL) &&
696 (memcmp(client->name, ucs2_name, new_len * 2) == 0)) {
697 LOG("Name did not change, not updating\n");
702 char *old_name = client->name;
703 client->name = ucs2_name;
704 client->name_len = new_len;
705 client->uses_net_wm_name = true;
709 /* If the client is a dock window, we don’t need to render anything */
713 if (client->container != NULL && client->container->mode == MODE_STACK)
714 render_container(conn, client->container);
715 else decorate_window(conn, client, client->frame, client->titlegc, 0);
722 * We handle legacy window names (titles) which are in COMPOUND_TEXT encoding. However, we
723 * just pass them along, so when containing non-ASCII characters, those will be rendering
724 * incorrectly. In order to correctly render unicode window titles in i3, an application
725 * has to set _NET_WM_NAME, which is in UTF-8 encoding.
727 * On every update, a message is put out to the user, so he may improve the situation and
728 * update applications which display filenames in their title to correctly use
729 * _NET_WM_NAME and therefore support unicode.
732 int handle_windowname_change_legacy(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 LOG("window's name changed (legacy).\n");
735 if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
736 LOG("prop == NULL\n");
739 Client *client = table_get(&by_child, window);
743 if (client->uses_net_wm_name) {
744 LOG("This client is capable of _NET_WM_NAME, ignoring legacy name\n");
748 /* Save the old pointer to make the update atomic */
750 if (asprintf(&new_name, "%.*s", xcb_get_property_value_length(prop), (char*)xcb_get_property_value(prop)) == -1) {
751 perror("Could not get old name");
752 LOG("Could not get old name\n");
755 /* Convert it to UCS-2 here for not having to convert it later every time we want to pass it to X */
756 LOG("Name should change to \"%s\"\n", new_name);
758 /* Check if they are the same and don’t update if so. */
759 if (client->name != NULL &&
760 strlen(new_name) == strlen(client->name) &&
761 strcmp(client->name, new_name) == 0) {
762 LOG("Name did not change, not updating\n");
767 LOG("Using legacy window title. Note that in order to get Unicode window titles in i3,"
768 "the application has to set _NET_WM_NAME which is in UTF-8 encoding.\n");
770 char *old_name = client->name;
771 client->name = new_name;
772 client->name_len = -1;
774 if (old_name != NULL)
777 /* If the client is a dock window, we don’t need to render anything */
781 if (client->container != NULL && client->container->mode == MODE_STACK)
782 render_container(conn, client->container);
783 else decorate_window(conn, client, client->frame, client->titlegc, 0);
790 * Updates the client’s WM_CLASS property
793 int handle_windowclass_change(void *data, xcb_connection_t *conn, uint8_t state,
794 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
795 LOG("window class changed\n");
796 if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
797 LOG("prop == NULL\n");
800 Client *client = table_get(&by_child, window);
804 if (asprintf(&new_class, "%.*s", xcb_get_property_value_length(prop), (char*)xcb_get_property_value(prop)) == -1) {
805 perror("Could not get window class");
806 LOG("Could not get window class\n");
810 LOG("changed to %s\n", new_class);
811 char *old_class = client->window_class;
812 client->window_class = new_class;
815 if (!client->initialized) {
816 LOG("Client is not yet initialized, not putting it to floating\n");
820 if (strcmp(new_class, "tools") == 0 || strcmp(new_class, "Dialog") == 0) {
821 LOG("tool/dialog window, should we put it floating?\n");
822 if (client->floating == FLOATING_AUTO_OFF)
823 toggle_floating_mode(conn, client, true);
830 * Expose event means we should redraw our windows (= title bar)
833 int handle_expose_event(void *data, xcb_connection_t *conn, xcb_expose_event_t *event) {
834 /* event->count is the number of minimum remaining expose events for this window, so we
835 skip all events but the last one */
836 if (event->count != 0)
838 LOG("window = %08x\n", event->window);
840 Client *client = table_get(&by_parent, event->window);
841 if (client == NULL) {
842 /* There was no client in the table, so this is probably an expose event for
843 one of our stack_windows. */
844 struct Stack_Window *stack_win;
845 SLIST_FOREACH(stack_win, &stack_wins, stack_windows)
846 if (stack_win->window == event->window) {
847 render_container(conn, stack_win->container);
851 /* …or one of the bars? */
853 TAILQ_FOREACH(screen, virtual_screens, screens)
854 if (screen->bar == event->window)
859 LOG("got client %s\n", client->name);
861 LOG("this is a dock\n");
865 if (client->container == NULL || client->container->mode != MODE_STACK)
866 decorate_window(conn, client, client->frame, client->titlegc, 0);
868 uint32_t background_color;
869 /* Distinguish if the window is currently focused… */
870 if (CUR_CELL->currently_focused == client)
871 background_color = config.client.focused.background;
872 /* …or if it is the focused window in a not focused container */
873 else background_color = config.client.focused_inactive.background;
875 /* Set foreground color to current focused color, line width to 2 */
876 uint32_t values[] = {background_color, 2};
877 xcb_change_gc(conn, client->titlegc, XCB_GC_FOREGROUND | XCB_GC_LINE_WIDTH, values);
879 /* Draw the border, the ±1 is for line width = 2 */
880 xcb_point_t points[] = {{1, 0}, /* left upper edge */
881 {1, client->rect.height-1}, /* left bottom edge */
882 {client->rect.width-1, client->rect.height-1}, /* right bottom edge */
883 {client->rect.width-1, 0}}; /* right upper edge */
884 xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, client->frame, client->titlegc, 4, points);
886 /* Draw a black background */
887 xcb_change_gc_single(conn, client->titlegc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#000000"));
888 xcb_rectangle_t crect = {2, 0, client->rect.width - (2 + 2), client->rect.height - 2};
889 xcb_poly_fill_rectangle(conn, client->frame, client->titlegc, 1, &crect);
896 * Handle client messages (EWMH)
899 int handle_client_message(void *data, xcb_connection_t *conn, xcb_client_message_event_t *event) {
900 LOG("client_message\n");
902 if (event->type == atoms[_NET_WM_STATE]) {
903 if (event->format != 32 || event->data.data32[1] != atoms[_NET_WM_STATE_FULLSCREEN])
908 Client *client = table_get(&by_child, event->window);
912 /* Check if the fullscreen state should be toggled */
913 if ((client->fullscreen &&
914 (event->data.data32[0] == _NET_WM_STATE_REMOVE ||
915 event->data.data32[0] == _NET_WM_STATE_TOGGLE)) ||
916 (!client->fullscreen &&
917 (event->data.data32[0] == _NET_WM_STATE_ADD ||
918 event->data.data32[0] == _NET_WM_STATE_TOGGLE)))
919 client_toggle_fullscreen(conn, client);
921 LOG("unhandled clientmessage\n");
928 int handle_window_type(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
929 xcb_atom_t atom, xcb_get_property_reply_t *property) {
930 /* TODO: Implement this one. To do this, implement a little test program which sleep(1)s
931 before changing this property. */
932 LOG("_NET_WM_WINDOW_TYPE changed, this is not yet implemented.\n");
937 * Handles the size hints set by a window, but currently only the part necessary for displaying
938 * clients proportionally inside their frames (mplayer for example)
940 * See ICCCM 4.1.2.3 for more details
943 int handle_normal_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
944 xcb_atom_t name, xcb_get_property_reply_t *reply) {
945 LOG("handle_normal_hints\n");
946 Client *client = table_get(&by_child, window);
947 if (client == NULL) {
948 LOG("No such client\n");
951 xcb_size_hints_t size_hints;
952 LOG("client is %08x / child %08x\n", client->frame, client->child);
954 /* If the hints were already in this event, use them, if not, request them */
956 xcb_get_wm_size_hints_from_reply(&size_hints, reply);
958 xcb_get_wm_normal_hints_reply(conn, xcb_get_wm_normal_hints_unchecked(conn, client->child), &size_hints, NULL);
960 if ((size_hints.flags & XCB_SIZE_HINT_P_MIN_SIZE)) {
961 LOG("min size set\n");
962 LOG("gots min_width = %d, min_height = %d\n", size_hints.min_width, size_hints.min_height);
965 /* If no aspect ratio was set or if it was invalid, we ignore the hints */
966 if (!(size_hints.flags & XCB_SIZE_HINT_P_ASPECT) ||
967 (size_hints.min_aspect_num <= 0) ||
968 (size_hints.min_aspect_den <= 0)) {
969 LOG("No aspect ratio set, ignoring\n");
973 LOG("window is %08x / %s\n", client->child, client->name);
975 int base_width = 0, base_height = 0;
977 /* base_width/height are the desired size of the window.
978 We check if either the program-specified size or the program-specified
979 min-size is available */
980 if (size_hints.flags & XCB_SIZE_HINT_P_SIZE) {
981 base_width = size_hints.base_width;
982 base_height = size_hints.base_height;
983 } else if (size_hints.flags & XCB_SIZE_HINT_P_MIN_SIZE) {
984 base_width = size_hints.min_width;
985 base_height = size_hints.min_height;
988 double width = client->rect.width - base_width;
989 double height = client->rect.height - base_height;
990 /* Convert numerator/denominator to a double */
991 double min_aspect = (double)size_hints.min_aspect_num / size_hints.min_aspect_den;
992 double max_aspect = (double)size_hints.max_aspect_num / size_hints.min_aspect_den;
994 LOG("min_aspect = %f, max_aspect = %f\n", min_aspect, max_aspect);
995 LOG("width = %f, height = %f\n", width, height);
997 /* Sanity checks, this is user-input, in a way */
998 if (max_aspect <= 0 || min_aspect <= 0 || height == 0 || (width / height) <= 0)
1001 /* Check if we need to set proportional_* variables using the correct ratio */
1002 if ((width / height) < min_aspect) {
1003 client->proportional_width = width;
1004 client->proportional_height = width / min_aspect;
1005 } else if ((width / height) > max_aspect) {
1006 client->proportional_width = width;
1007 client->proportional_height = width / max_aspect;
1010 client->force_reconfigure = true;
1012 if (client->container != NULL) {
1013 render_container(conn, client->container);
1021 * Handles the transient for hints set by a window, signalizing that this window is a popup window
1022 * for some other window.
1024 * See ICCCM 4.1.2.6 for more details
1027 int handle_transient_for(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
1028 xcb_atom_t name, xcb_get_property_reply_t *reply) {
1029 LOG("Transient hint!\n");
1030 Client *client = table_get(&by_child, window);
1031 if (client == NULL) {
1032 LOG("No such client\n");
1036 xcb_window_t transient_for;
1038 if (reply != NULL) {
1039 if (!xcb_get_wm_transient_for_from_reply(&transient_for, reply)) {
1040 LOG("Not transient for any window\n");
1044 if (!xcb_get_wm_transient_for_reply(conn, xcb_get_wm_transient_for_unchecked(conn, window),
1045 &transient_for, NULL)) {
1046 LOG("Not transient for any window\n");
1051 if (client->floating == FLOATING_AUTO_OFF) {
1052 LOG("This is a popup window, putting into floating\n");
1053 toggle_floating_mode(conn, client, true);