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);
280 /* Because workspaces can be on different screens, we need to loop
281 through all of them and decide to count it based on its ->screen */
282 for (int i = 0; i < 10; i++) {
283 if (workspaces[i].screen != screen)
285 LOG("Checking if click was on workspace %d with drawn = %d, tw = %d\n",
286 i, drawn, workspaces[i].text_width);
287 if (event->event_x > (drawn + 1) &&
288 event->event_x <= (drawn + 1 + workspaces[i].text_width + 5 + 5)) {
289 show_workspace(conn, i+1);
293 drawn += workspaces[i].text_width + 5 + 5 + 2;
301 int handle_button_press(void *ignored, xcb_connection_t *conn, xcb_button_press_event_t *event) {
302 LOG("button press!\n");
303 LOG("state = %d\n", event->state);
304 /* This was either a focus for a client’s parent (= titlebar)… */
305 Client *client = table_get(&by_child, event->event);
306 bool border_click = false;
307 if (client == NULL) {
308 client = table_get(&by_parent, event->event);
311 /* See if this was a click with the configured modifier. If so, we need
312 * to move around the client if it was floating. if not, we just process
314 if (config.floating_modifier != 0 &&
315 (event->state & config.floating_modifier) != 0) {
316 if (client == NULL) {
317 LOG("Not handling, floating_modifier was pressed and no client found\n");
320 if (client_is_floating(client)) {
321 floating_drag_window(conn, client, event);
326 if (client == NULL) {
327 /* The client was neither on a client’s titlebar nor on a client itself, maybe on a stack_window? */
328 if (button_press_stackwin(conn, event))
332 if (button_press_bar(conn, event))
335 LOG("Could not handle this button press\n");
339 /* Set focus in any case */
340 set_focus(conn, client, true);
342 /* Let’s see if this was on the borders (= resize). If not, we’re done */
343 LOG("press button on x=%d, y=%d\n", event->event_x, event->event_y);
344 resize_orientation_t orientation = O_VERTICAL;
345 Container *con = client->container;
349 LOG("dock. done.\n");
350 xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time);
355 LOG("event->event_x = %d, client->rect.width = %d\n", event->event_x, client->rect.width);
358 LOG("client. done.\n");
359 xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time);
360 /* Floating clients should be raised on click */
361 if (client_is_floating(client))
362 xcb_raise_window(conn, client->frame);
367 /* Don’t handle events inside the titlebar, only borders are interesting */
368 i3Font *font = load_font(conn, config.font);
369 if (event->event_y >= 2 && event->event_y <= (font->height + 2 + 2)) {
370 LOG("click on titlebar\n");
372 /* Floating clients can be dragged by grabbing their titlebar */
373 if (client_is_floating(client)) {
374 /* Firstly, we raise it. Maybe the user just wanted to raise it without grabbing */
375 xcb_raise_window(conn, client->frame);
378 floating_drag_window(conn, client, event);
383 if (client_is_floating(client))
384 return floating_border_click(conn, client, event);
386 if (event->event_y < 2) {
387 /* This was a press on the top border */
390 first = con->row - 1;
392 orientation = O_HORIZONTAL;
393 } else if (event->event_y >= (client->rect.height - 2)) {
395 first = con->row + (con->rowspan - 1);
396 if (!cell_exists(con->col, first) ||
397 (first == (con->workspace->rows-1)))
401 orientation = O_HORIZONTAL;
402 } else if (event->event_x <= 2) {
407 first = con->col - 1;
409 } else if (event->event_x > 2) {
411 first = con->col + (con->colspan - 1);
412 LOG("column %d\n", first);
414 if (!cell_exists(first, con->row) ||
415 (first == (con->workspace->cols-1)))
421 return resize_graphical_handler(conn, con->workspace, first, second, orientation, event);
425 * A new window appeared on the screen (=was mapped), so let’s manage it.
428 int handle_map_request(void *prophs, xcb_connection_t *conn, xcb_map_request_event_t *event) {
429 xcb_get_window_attributes_cookie_t cookie;
431 cookie = xcb_get_window_attributes_unchecked(conn, event->window);
433 LOG("window = 0x%08x, serial is %d.\n", event->window, event->sequence);
434 add_ignore_event(event->sequence);
436 manage_window(prophs, conn, event->window, cookie, false);
441 * Configure requests are received when the application wants to resize windows on their own.
443 * We generate a synthethic configure notify event to signalize the client its "new" position.
446 int handle_configure_request(void *prophs, xcb_connection_t *conn, xcb_configure_request_event_t *event) {
447 LOG("configure-request, serial %d\n", event->sequence);
448 LOG("event->window = %08x\n", event->window);
449 LOG("application wants to be at %dx%d with %dx%d\n", event->x, event->y, event->width, event->height);
451 Client *client = table_get(&by_child, event->window);
452 if (client == NULL) {
453 LOG("This client is not mapped, so we don't care and just tell the client that he will get its size\n");
457 #define COPY_MASK_MEMBER(mask_member, event_member) do { \
458 if (event->value_mask & mask_member) { \
459 mask |= mask_member; \
460 values[c++] = event->event_member; \
464 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_X, x);
465 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_Y, y);
466 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_WIDTH, width);
467 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_HEIGHT, height);
468 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_BORDER_WIDTH, border_width);
469 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_SIBLING, sibling);
470 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_STACK_MODE, stack_mode);
472 xcb_configure_window(conn, event->window, mask, values);
478 if (client->fullscreen) {
479 LOG("Client is in fullscreen mode\n");
481 Rect child_rect = client->workspace->rect;
482 child_rect.x = child_rect.y = 0;
483 fake_configure_notify(conn, child_rect, client->child);
488 /* Floating clients can be reconfigured */
489 if (client_is_floating(client)) {
490 i3Font *font = load_font(conn, config.font);
492 if (event->value_mask & XCB_CONFIG_WINDOW_X)
493 client->rect.x = event->x;
494 if (event->value_mask & XCB_CONFIG_WINDOW_Y)
495 client->rect.y = event->y;
496 if (event->value_mask & XCB_CONFIG_WINDOW_WIDTH)
497 client->rect.width = event->width + 2 + 2;
498 if (event->value_mask & XCB_CONFIG_WINDOW_HEIGHT)
499 client->rect.height = event->height + (font->height + 2 + 2) + 2;
501 LOG("Accepted new position/size for floating client: (%d, %d) size %d x %d\n",
502 client->rect.x, client->rect.y, client->rect.width, client->rect.height);
504 /* Push the new position/size to X11 */
505 reposition_client(conn, client);
506 resize_client(conn, client);
512 if (client->fullscreen) {
513 LOG("Client is in fullscreen mode\n");
515 Rect child_rect = client->container->workspace->rect;
516 child_rect.x = child_rect.y = 0;
517 fake_configure_notify(conn, child_rect, client->child);
522 fake_absolute_configure_notify(conn, client);
528 * Configuration notifies are only handled because we need to set up ignore for the following
529 * enter notify events
532 int handle_configure_event(void *prophs, xcb_connection_t *conn, xcb_configure_notify_event_t *event) {
533 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
535 LOG("handle_configure_event for window %08x\n", event->window);
536 LOG("event->type = %d, \n", event->response_type);
537 LOG("event->x = %d, ->y = %d, ->width = %d, ->height = %d\n", event->x, event->y, event->width, event->height);
539 /* We ignore this sequence twice because events for child and frame should be ignored */
540 add_ignore_event(event->sequence);
541 add_ignore_event(event->sequence);
543 if (event->event == root) {
544 LOG("reconfigure of the root window, need to xinerama\n");
545 /* FIXME: Somehow, this is occuring too often. Therefore, we check for 0/0,
546 but is there a better way? */
547 if (event->x == 0 && event->y == 0)
548 xinerama_requery_screens(conn);
556 * Our window decorations were unmapped. That means, the window will be killed now,
557 * so we better clean up before.
560 int handle_unmap_notify_event(void *data, xcb_connection_t *conn, xcb_unmap_notify_event_t *event) {
561 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
563 add_ignore_event(event->sequence);
565 Client *client = table_get(&by_child, event->window);
566 /* First, we need to check if the client is awaiting an unmap-request which
567 was generated by us reparenting the window. In that case, we just ignore it. */
568 if (client != NULL && client->awaiting_useless_unmap) {
569 LOG("Dropping this unmap request, it was generated by reparenting\n");
570 client->awaiting_useless_unmap = false;
574 LOG("event->window = %08x, event->event = %08x\n", event->window, event->event);
575 LOG("UnmapNotify for 0x%08x (received from 0x%08x)\n", event->window, event->event);
576 if (client == NULL) {
577 LOG("not a managed window. Ignoring.\n");
579 /* This was most likely the destroyed frame of a client which is
580 * currently being unmapped, so we add this sequence (again!) to
581 * the ignore list (enter_notify events will get sent for both,
582 * the child and its frame). */
583 add_ignore_event(event->sequence);
588 client = table_remove(&by_child, event->window);
590 /* If this was the fullscreen client, we need to unset it */
591 if (client->fullscreen)
592 client->workspace->fullscreen_client = NULL;
594 /* Clients without a container are either floating or dock windows */
595 if (client->container != NULL) {
596 Container *con = client->container;
598 /* Remove the client from the list of clients */
599 client_remove_from_container(conn, client, con, true);
601 /* Set focus to the last focused client in this container */
602 con->currently_focused = get_last_focused_client(conn, con, NULL);
604 /* Only if this is the active container, we need to really change focus */
605 if ((con->currently_focused != NULL) && ((con == CUR_CELL) || client->fullscreen))
606 set_focus(conn, con->currently_focused, true);
607 } else if (client_is_floating(client)) {
608 LOG("Removing from floating clients\n");
609 TAILQ_REMOVE(&(client->workspace->floating_clients), client, floating_clients);
610 SLIST_REMOVE(&(client->workspace->focus_stack), client, Client, focus_clients);
614 LOG("Removing from dock clients\n");
615 SLIST_REMOVE(&(client->workspace->screen->dock_clients), client, Client, dock_clients);
618 LOG("child of 0x%08x.\n", client->frame);
619 xcb_reparent_window(conn, client->child, root, 0, 0);
620 xcb_destroy_window(conn, client->frame);
622 table_remove(&by_parent, client->frame);
624 if (client->container != NULL) {
625 Workspace *workspace = client->container->workspace;
626 cleanup_table(conn, workspace);
627 fix_colrowspan(conn, workspace);
630 /* Let’s see how many clients there are left on the workspace to delete it if it’s empty */
631 bool workspace_empty = SLIST_EMPTY(&(client->workspace->focus_stack));
632 bool workspace_active = false;
633 Client *to_focus = (!workspace_empty ? SLIST_FIRST(&(client->workspace->focus_stack)) : NULL);
635 /* If this workspace is currently active, we don’t delete it */
637 TAILQ_FOREACH(screen, virtual_screens, screens)
638 if (screen->current_workspace == client->workspace->num) {
639 workspace_active = true;
640 workspace_empty = false;
644 if (workspace_empty) {
645 LOG("setting ws to NULL for workspace %d (%p)\n", client->workspace->num,
647 client->workspace->screen = NULL;
650 FREE(client->window_class);
656 /* Ensure the focus is set to the next client in the focus stack */
657 if (workspace_active && to_focus != NULL)
658 set_focus(conn, to_focus, true);
664 * Called when a window changes its title
667 int handle_windowname_change(void *data, xcb_connection_t *conn, uint8_t state,
668 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
669 LOG("window's name changed.\n");
670 if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
671 LOG("_NET_WM_NAME not specified, not changing\n");
674 Client *client = table_get(&by_child, window);
678 /* Save the old pointer to make the update atomic */
681 asprintf(&new_name, "%.*s", xcb_get_property_value_length(prop), (char*)xcb_get_property_value(prop));
682 /* Convert it to UCS-2 here for not having to convert it later every time we want to pass it to X */
683 char *ucs2_name = convert_utf8_to_ucs2(new_name, &new_len);
684 LOG("Name should change to \"%s\"\n", new_name);
687 /* Check if they are the same and don’t update if so.
688 Note the use of new_len * 2 to check all bytes as each glyph takes 2 bytes.
689 Also note the use of memcmp() instead of strncmp() because the latter stops on nullbytes,
690 but UCS-2 uses nullbytes to fill up glyphs which only use one byte. */
691 if ((new_len == client->name_len) &&
692 (client->name != NULL) &&
693 (memcmp(client->name, ucs2_name, new_len * 2) == 0)) {
694 LOG("Name did not change, not updating\n");
699 char *old_name = client->name;
700 client->name = ucs2_name;
701 client->name_len = new_len;
702 client->uses_net_wm_name = true;
706 /* If the client is a dock window, we don’t need to render anything */
710 if (client->container != NULL && client->container->mode == MODE_STACK)
711 render_container(conn, client->container);
712 else decorate_window(conn, client, client->frame, client->titlegc, 0);
719 * We handle legacy window names (titles) which are in COMPOUND_TEXT encoding. However, we
720 * just pass them along, so when containing non-ASCII characters, those will be rendering
721 * incorrectly. In order to correctly render unicode window titles in i3, an application
722 * has to set _NET_WM_NAME, which is in UTF-8 encoding.
724 * On every update, a message is put out to the user, so he may improve the situation and
725 * update applications which display filenames in their title to correctly use
726 * _NET_WM_NAME and therefore support unicode.
729 int handle_windowname_change_legacy(void *data, xcb_connection_t *conn, uint8_t state,
730 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
731 LOG("window's name changed (legacy).\n");
732 if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
733 LOG("prop == NULL\n");
736 Client *client = table_get(&by_child, window);
740 if (client->uses_net_wm_name) {
741 LOG("This client is capable of _NET_WM_NAME, ignoring legacy name\n");
745 /* Save the old pointer to make the update atomic */
747 if (asprintf(&new_name, "%.*s", xcb_get_property_value_length(prop), (char*)xcb_get_property_value(prop)) == -1) {
748 perror("Could not get old name");
749 LOG("Could not get old name\n");
752 /* Convert it to UCS-2 here for not having to convert it later every time we want to pass it to X */
753 LOG("Name should change to \"%s\"\n", new_name);
755 /* Check if they are the same and don’t update if so. */
756 if (client->name != NULL &&
757 strlen(new_name) == strlen(client->name) &&
758 strcmp(client->name, new_name) == 0) {
759 LOG("Name did not change, not updating\n");
764 LOG("Using legacy window title. Note that in order to get Unicode window titles in i3,"
765 "the application has to set _NET_WM_NAME which is in UTF-8 encoding.\n");
767 char *old_name = client->name;
768 client->name = new_name;
769 client->name_len = -1;
771 if (old_name != NULL)
774 /* If the client is a dock window, we don’t need to render anything */
778 if (client->container != NULL && client->container->mode == MODE_STACK)
779 render_container(conn, client->container);
780 else decorate_window(conn, client, client->frame, client->titlegc, 0);
787 * Updates the client’s WM_CLASS property
790 int handle_windowclass_change(void *data, xcb_connection_t *conn, uint8_t state,
791 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
792 LOG("window class changed\n");
793 if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
794 LOG("prop == NULL\n");
797 Client *client = table_get(&by_child, window);
801 if (asprintf(&new_class, "%.*s", xcb_get_property_value_length(prop), (char*)xcb_get_property_value(prop)) == -1) {
802 perror("Could not get window class");
803 LOG("Could not get window class\n");
807 LOG("changed to %s\n", new_class);
808 char *old_class = client->window_class;
809 client->window_class = new_class;
812 if (!client->initialized) {
813 LOG("Client is not yet initialized, not putting it to floating\n");
817 if (strcmp(new_class, "tools") == 0 || strcmp(new_class, "Dialog") == 0) {
818 LOG("tool/dialog window, should we put it floating?\n");
819 if (client->floating == FLOATING_AUTO_OFF)
820 toggle_floating_mode(conn, client, true);
827 * Expose event means we should redraw our windows (= title bar)
830 int handle_expose_event(void *data, xcb_connection_t *conn, xcb_expose_event_t *event) {
831 /* event->count is the number of minimum remaining expose events for this window, so we
832 skip all events but the last one */
833 if (event->count != 0)
835 LOG("window = %08x\n", event->window);
837 Client *client = table_get(&by_parent, event->window);
838 if (client == NULL) {
839 /* There was no client in the table, so this is probably an expose event for
840 one of our stack_windows. */
841 struct Stack_Window *stack_win;
842 SLIST_FOREACH(stack_win, &stack_wins, stack_windows)
843 if (stack_win->window == event->window) {
844 render_container(conn, stack_win->container);
848 /* …or one of the bars? */
850 TAILQ_FOREACH(screen, virtual_screens, screens)
851 if (screen->bar == event->window)
856 LOG("got client %s\n", client->name);
858 LOG("this is a dock\n");
862 if (client->container == NULL || client->container->mode != MODE_STACK)
863 decorate_window(conn, client, client->frame, client->titlegc, 0);
865 uint32_t background_color;
866 /* Distinguish if the window is currently focused… */
867 if (CUR_CELL->currently_focused == client)
868 background_color = config.client.focused.background;
869 /* …or if it is the focused window in a not focused container */
870 else background_color = config.client.focused_inactive.background;
872 /* Set foreground color to current focused color, line width to 2 */
873 uint32_t values[] = {background_color, 2};
874 xcb_change_gc(conn, client->titlegc, XCB_GC_FOREGROUND | XCB_GC_LINE_WIDTH, values);
876 /* Draw the border, the ±1 is for line width = 2 */
877 xcb_point_t points[] = {{1, 0}, /* left upper edge */
878 {1, client->rect.height-1}, /* left bottom edge */
879 {client->rect.width-1, client->rect.height-1}, /* right bottom edge */
880 {client->rect.width-1, 0}}; /* right upper edge */
881 xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, client->frame, client->titlegc, 4, points);
883 /* Draw a black background */
884 xcb_change_gc_single(conn, client->titlegc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#000000"));
885 xcb_rectangle_t crect = {2, 0, client->rect.width - (2 + 2), client->rect.height - 2};
886 xcb_poly_fill_rectangle(conn, client->frame, client->titlegc, 1, &crect);
893 * Handle client messages (EWMH)
896 int handle_client_message(void *data, xcb_connection_t *conn, xcb_client_message_event_t *event) {
897 LOG("client_message\n");
899 if (event->type == atoms[_NET_WM_STATE]) {
900 if (event->format != 32 || event->data.data32[1] != atoms[_NET_WM_STATE_FULLSCREEN])
905 Client *client = table_get(&by_child, event->window);
909 /* Check if the fullscreen state should be toggled */
910 if ((client->fullscreen &&
911 (event->data.data32[0] == _NET_WM_STATE_REMOVE ||
912 event->data.data32[0] == _NET_WM_STATE_TOGGLE)) ||
913 (!client->fullscreen &&
914 (event->data.data32[0] == _NET_WM_STATE_ADD ||
915 event->data.data32[0] == _NET_WM_STATE_TOGGLE)))
916 client_toggle_fullscreen(conn, client);
918 LOG("unhandled clientmessage\n");
925 int handle_window_type(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
926 xcb_atom_t atom, xcb_get_property_reply_t *property) {
927 /* TODO: Implement this one. To do this, implement a little test program which sleep(1)s
928 before changing this property. */
929 LOG("_NET_WM_WINDOW_TYPE changed, this is not yet implemented.\n");
934 * Handles the size hints set by a window, but currently only the part necessary for displaying
935 * clients proportionally inside their frames (mplayer for example)
937 * See ICCCM 4.1.2.3 for more details
940 int handle_normal_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
941 xcb_atom_t name, xcb_get_property_reply_t *reply) {
942 LOG("handle_normal_hints\n");
943 Client *client = table_get(&by_child, window);
944 if (client == NULL) {
945 LOG("No such client\n");
948 xcb_size_hints_t size_hints;
949 LOG("client is %08x / child %08x\n", client->frame, client->child);
951 /* If the hints were already in this event, use them, if not, request them */
953 xcb_get_wm_size_hints_from_reply(&size_hints, reply);
955 xcb_get_wm_normal_hints_reply(conn, xcb_get_wm_normal_hints_unchecked(conn, client->child), &size_hints, NULL);
957 if ((size_hints.flags & XCB_SIZE_HINT_P_MIN_SIZE)) {
958 LOG("min size set\n");
959 LOG("gots min_width = %d, min_height = %d\n", size_hints.min_width, size_hints.min_height);
962 /* If no aspect ratio was set or if it was invalid, we ignore the hints */
963 if (!(size_hints.flags & XCB_SIZE_HINT_P_ASPECT) ||
964 (size_hints.min_aspect_num <= 0) ||
965 (size_hints.min_aspect_den <= 0)) {
966 LOG("No aspect ratio set, ignoring\n");
970 LOG("window is %08x / %s\n", client->child, client->name);
972 int base_width = 0, base_height = 0;
974 /* base_width/height are the desired size of the window.
975 We check if either the program-specified size or the program-specified
976 min-size is available */
977 if (size_hints.flags & XCB_SIZE_HINT_P_SIZE) {
978 base_width = size_hints.base_width;
979 base_height = size_hints.base_height;
980 } else if (size_hints.flags & XCB_SIZE_HINT_P_MIN_SIZE) {
981 base_width = size_hints.min_width;
982 base_height = size_hints.min_height;
985 double width = client->rect.width - base_width;
986 double height = client->rect.height - base_height;
987 /* Convert numerator/denominator to a double */
988 double min_aspect = (double)size_hints.min_aspect_num / size_hints.min_aspect_den;
989 double max_aspect = (double)size_hints.max_aspect_num / size_hints.min_aspect_den;
991 LOG("min_aspect = %f, max_aspect = %f\n", min_aspect, max_aspect);
992 LOG("width = %f, height = %f\n", width, height);
994 /* Sanity checks, this is user-input, in a way */
995 if (max_aspect <= 0 || min_aspect <= 0 || height == 0 || (width / height) <= 0)
998 /* Check if we need to set proportional_* variables using the correct ratio */
999 if ((width / height) < min_aspect) {
1000 client->proportional_width = width;
1001 client->proportional_height = width / min_aspect;
1002 } else if ((width / height) > max_aspect) {
1003 client->proportional_width = width;
1004 client->proportional_height = width / max_aspect;
1007 client->force_reconfigure = true;
1009 if (client->container != NULL) {
1010 render_container(conn, client->container);
1018 * Handles the transient for hints set by a window, signalizing that this window is a popup window
1019 * for some other window.
1021 * See ICCCM 4.1.2.6 for more details
1024 int handle_transient_for(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
1025 xcb_atom_t name, xcb_get_property_reply_t *reply) {
1026 LOG("Transient hint!\n");
1027 Client *client = table_get(&by_child, window);
1028 if (client == NULL) {
1029 LOG("No such client\n");
1033 xcb_window_t transient_for;
1035 if (reply != NULL) {
1036 if (!xcb_get_wm_transient_for_from_reply(&transient_for, reply)) {
1037 LOG("Not transient for any window\n");
1041 if (!xcb_get_wm_transient_for_reply(conn, xcb_get_wm_transient_for_unchecked(conn, window),
1042 &transient_for, NULL)) {
1043 LOG("Not transient for any window\n");
1048 if (client->floating == FLOATING_AUTO_OFF) {
1049 LOG("This is a popup window, putting into floating\n");
1050 toggle_floating_mode(conn, client, true);