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>
35 /* After mapping/unmapping windows, a notify event is generated. However, we don’t want it,
36 since it’d trigger an infinite loop of switching between the different windows when
37 changing workspaces */
38 static SLIST_HEAD(ignore_head, Ignore_Event) ignore_events;
40 static void add_ignore_event(const int sequence) {
41 struct Ignore_Event *event = smalloc(sizeof(struct Ignore_Event));
43 event->sequence = sequence;
44 event->added = time(NULL);
46 LOG("Adding sequence %d to ignorelist\n", sequence);
48 SLIST_INSERT_HEAD(&ignore_events, event, ignore_events);
52 * Checks if the given sequence is ignored and returns true if so.
55 static bool event_is_ignored(const int sequence) {
56 struct Ignore_Event *event;
57 time_t now = time(NULL);
58 for (event = SLIST_FIRST(&ignore_events); event != SLIST_END(&ignore_events);) {
59 if ((now - event->added) > 5) {
60 LOG("Entry is older than five seconds, cleaning up\n");
61 struct Ignore_Event *save = event;
62 event = SLIST_NEXT(event, ignore_events);
63 SLIST_REMOVE(&ignore_events, save, Ignore_Event, ignore_events);
65 } else event = SLIST_NEXT(event, ignore_events);
68 SLIST_FOREACH(event, &ignore_events, ignore_events) {
69 if (event->sequence == sequence) {
70 LOG("Ignoring event (sequence %d)\n", sequence);
71 SLIST_REMOVE(&ignore_events, event, Ignore_Event, ignore_events);
81 * Due to bindings like Mode_switch + <a>, we need to bind some keys in XCB_GRAB_MODE_SYNC.
82 * Therefore, we just replay all key presses.
85 int handle_key_release(void *ignored, xcb_connection_t *conn, xcb_key_release_event_t *event) {
86 LOG("got key release, just passing\n");
87 xcb_allow_events(conn, XCB_ALLOW_REPLAY_KEYBOARD, event->time);
93 * There was a key press. We compare this key code with our bindings table and pass
94 * the bound action to parse_command().
97 int handle_key_press(void *ignored, xcb_connection_t *conn, xcb_key_press_event_t *event) {
98 LOG("Keypress %d\n", event->detail);
100 /* We need to get the keysym group (There are group 1 to group 4, each holding
101 two keysyms (without shift and with shift) using Xkb because X fails to
102 provide them reliably (it works in Xephyr, it does not in real X) */
104 if (XkbGetState(xkbdpy, XkbUseCoreKbd, &state) == Success && (state.group+1) == 2)
107 LOG("state %d\n", event->state);
109 /* Remove the numlock bit, all other bits are modifiers we can bind to */
110 uint16_t state_filtered = event->state & ~(xcb_numlock_mask | XCB_MOD_MASK_LOCK);
112 /* Find the binding */
114 TAILQ_FOREACH(bind, &bindings, bindings)
115 if (bind->keycode == event->detail && bind->mods == state_filtered)
118 /* No match? Then it was an actively grabbed key, that is with Mode_switch, and
119 the user did not press Mode_switch, so just pass it… */
120 if (bind == TAILQ_END(&bindings)) {
121 xcb_allow_events(conn, ReplayKeyboard, event->time);
126 parse_command(conn, bind->command);
127 if (event->state & 0x2) {
128 LOG("Mode_switch -> allow_events(SyncKeyboard)\n");
129 xcb_allow_events(conn, SyncKeyboard, event->time);
137 * When the user moves the mouse pointer onto a window, this callback gets called.
140 int handle_enter_notify(void *ignored, xcb_connection_t *conn, xcb_enter_notify_event_t *event) {
141 LOG("enter_notify for %08x, mode = %d, detail %d, serial %d\n", event->event, event->mode, event->detail, event->sequence);
142 if (event->mode != XCB_NOTIFY_MODE_NORMAL) {
143 LOG("This was not a normal notify, ignoring\n");
146 /* Some events are not interesting, because they were not generated actively by the
147 user, but be reconfiguration of windows */
148 if (event_is_ignored(event->sequence))
151 /* This was either a focus for a client’s parent (= titlebar)… */
152 Client *client = table_get(&by_parent, event->event);
153 /* …or the client itself */
155 client = table_get(&by_child, event->event);
157 /* Check for stack windows */
158 if (client == NULL) {
159 struct Stack_Window *stack_win;
160 SLIST_FOREACH(stack_win, &stack_wins, stack_windows)
161 if (stack_win->window == event->event) {
162 client = stack_win->container->currently_focused;
168 /* If not, then the user moved his cursor to the root window. In that case, we adjust c_ws */
169 if (client == NULL) {
170 LOG("Getting screen at %d x %d\n", event->root_x, event->root_y);
171 i3Screen *screen = get_screen_containing(event->root_x, event->root_y);
172 if (screen == NULL) {
173 LOG("ERROR: No such screen\n");
176 c_ws->current_row = current_row;
177 c_ws->current_col = current_col;
178 c_ws = &workspaces[screen->current_workspace];
179 current_row = c_ws->current_row;
180 current_col = c_ws->current_col;
181 LOG("We're now on virtual screen number %d\n", screen->num);
185 /* Do plausibility checks: This event may be useless for us if it occurs on a window
186 which is in a stacked container but not the focused one */
187 if (client->container != NULL &&
188 client->container->mode == MODE_STACK &&
189 client->container->currently_focused != client) {
190 LOG("Plausibility check says: no\n");
194 set_focus(conn, client, false);
200 * Checks if the button press was on a stack window, handles focus setting and returns true
201 * if so, or false otherwise.
204 static bool button_press_stackwin(xcb_connection_t *conn, xcb_button_press_event_t *event) {
205 struct Stack_Window *stack_win;
206 SLIST_FOREACH(stack_win, &stack_wins, stack_windows) {
207 if (stack_win->window != event->event)
210 /* A stack window was clicked, we check if it was button4 or button5
211 which are scroll up / scroll down. */
212 if (event->detail == XCB_BUTTON_INDEX_4 || event->detail == XCB_BUTTON_INDEX_5) {
213 direction_t direction = (event->detail == XCB_BUTTON_INDEX_4 ? D_UP : D_DOWN);
214 focus_window_in_container(conn, CUR_CELL, direction);
218 /* It was no scrolling, so we calculate the destination client by
219 dividing the Y position of the event through the height of a window
220 decoration and then set the focus to this client. */
221 i3Font *font = load_font(conn, config.font);
222 int decoration_height = (font->height + 2 + 2);
223 int destination = (event->event_y / decoration_height),
227 LOG("Click on stack_win for client %d\n", destination);
228 CIRCLEQ_FOREACH(client, &(stack_win->container->clients), clients)
229 if (c++ == destination) {
230 set_focus(conn, client, true);
241 * Checks if the button press was on a bar, switches to the workspace and returns true
242 * if so, or false otherwise.
245 static bool button_press_bar(xcb_connection_t *conn, xcb_button_press_event_t *event) {
247 TAILQ_FOREACH(screen, virtual_screens, screens) {
248 if (screen->bar != event->event)
251 LOG("Click on a bar\n");
253 /* Check if the button was one of button4 or button5 (scroll up / scroll down) */
254 if (event->detail == XCB_BUTTON_INDEX_4 || event->detail == XCB_BUTTON_INDEX_5) {
255 int add = (event->detail == XCB_BUTTON_INDEX_4 ? -1 : 1);
256 for (int i = c_ws->num + add; (i >= 0) && (i < 10); i += add)
257 if (workspaces[i].screen == screen) {
258 show_workspace(conn, i+1);
263 i3Font *font = load_font(conn, config.font);
264 int workspace = event->event_x / (font->height + 6),
266 /* Because workspaces can be on different screens, we need to loop
267 through all of them and decide to count it based on its ->screen */
268 for (int i = 0; i < 10; i++)
269 if ((workspaces[i].screen == screen) && (c++ == workspace)) {
270 show_workspace(conn, i+1);
279 int handle_button_press(void *ignored, xcb_connection_t *conn, xcb_button_press_event_t *event) {
280 LOG("button press!\n");
281 /* This was either a focus for a client’s parent (= titlebar)… */
282 Client *client = table_get(&by_child, event->event);
283 bool border_click = false;
284 if (client == NULL) {
285 client = table_get(&by_parent, event->event);
288 if (client == NULL) {
289 /* The client was neither on a client’s titlebar nor on a client itself, maybe on a stack_window? */
290 if (button_press_stackwin(conn, event))
294 if (button_press_bar(conn, event))
297 LOG("Could not handle this button press\n");
301 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
302 xcb_screen_t *root_screen = xcb_setup_roots_iterator(xcb_get_setup(conn)).data;
304 /* Set focus in any case */
305 set_focus(conn, client, true);
307 /* Let’s see if this was on the borders (= resize). If not, we’re done */
308 LOG("press button on x=%d, y=%d\n", event->event_x, event->event_y);
310 Container *con = client->container,
313 enum { O_HORIZONTAL, O_VERTICAL } orientation = O_VERTICAL;
317 LOG("dock. done.\n");
318 xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time);
323 LOG("event->event_x = %d, client->rect.width = %d\n", event->event_x, client->rect.width);
326 LOG("client. done.\n");
327 xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time);
332 /* Don’t handle events inside the titlebar, only borders are interesting */
333 i3Font *font = load_font(conn, config.font);
334 if (event->event_y >= 2 && event->event_y <= (font->height + 2 + 2)) {
335 LOG("click on titlebar\n");
339 if (event->event_y < 2) {
340 /* This was a press on the top border */
343 first = con->workspace->table[con->col][con->row-1];
345 orientation = O_HORIZONTAL;
346 } else if (event->event_y >= (client->rect.height - 2)) {
348 if (con->row == (con->workspace->rows-1))
351 second = con->workspace->table[con->col][con->row+1];
352 orientation = O_HORIZONTAL;
353 } else if (event->event_x <= 2) {
357 first = con->workspace->table[con->col-1][con->row];
359 } else if (event->event_x > 2) {
361 if (con->col == (con->workspace->cols-1))
364 second = con->workspace->table[con->col+1][con->row];
367 /* FIXME: horizontal resizing causes empty spaces to exist */
368 if (orientation == O_HORIZONTAL) {
369 LOG("Sorry, horizontal resizing is not yet activated due to creating layout bugs."
370 "If you are brave, enable the code for yourself and try fixing it.\n");
377 mask = XCB_CW_OVERRIDE_REDIRECT;
380 /* Open a new window, the resizebar. Grab the pointer and move the window around
381 as the user moves the pointer. */
382 Rect grabrect = {0, 0, root_screen->width_in_pixels, root_screen->height_in_pixels};
383 xcb_window_t grabwin = create_window(conn, grabrect, XCB_WINDOW_CLASS_INPUT_ONLY, -1, mask, values);
386 if (orientation == O_VERTICAL) {
387 helprect.x = event->root_x;
390 helprect.height = root_screen->height_in_pixels; /* this has to be the cell’s height */
391 new_position = event->root_x;
394 helprect.y = event->root_y;
395 helprect.width = root_screen->width_in_pixels; /* this has to be the cell’s width */
397 new_position = event->root_y;
400 mask = XCB_CW_BACK_PIXEL;
401 values[0] = get_colorpixel(conn, "#4c7899");
403 mask |= XCB_CW_OVERRIDE_REDIRECT;
406 xcb_window_t helpwin = create_window(conn, helprect, XCB_WINDOW_CLASS_INPUT_OUTPUT,
407 (orientation == O_VERTICAL ?
408 XCB_CURSOR_SB_V_DOUBLE_ARROW :
409 XCB_CURSOR_SB_H_DOUBLE_ARROW), mask, values);
411 xcb_circulate_window(conn, XCB_CIRCULATE_RAISE_LOWEST, helpwin);
413 xcb_grab_pointer(conn, false, root, XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_POINTER_MOTION,
414 XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC, grabwin, XCB_NONE, XCB_CURRENT_TIME);
418 xcb_generic_event_t *inside_event;
419 /* I’ve always wanted to have my own eventhandler… */
420 while ((inside_event = xcb_wait_for_event(conn))) {
421 /* Same as get_event_handler in xcb */
422 int nr = inside_event->response_type;
424 /* An error occured */
425 handle_event(NULL, conn, inside_event);
430 nr &= XCB_EVENT_RESPONSE_TYPE_MASK;
433 /* Check if we need to escape this loop */
434 if (nr == XCB_BUTTON_RELEASE)
438 case XCB_MOTION_NOTIFY:
439 if (orientation == O_VERTICAL) {
440 values[0] = new_position = ((xcb_motion_notify_event_t*)inside_event)->root_x;
441 xcb_configure_window(conn, helpwin, XCB_CONFIG_WINDOW_X, values);
443 values[0] = new_position = ((xcb_motion_notify_event_t*)inside_event)->root_y;
444 xcb_configure_window(conn, helpwin, XCB_CONFIG_WINDOW_Y, values);
450 LOG("Passing to original handler\n");
451 /* Use original handler */
452 xcb_event_handle(&evenths, inside_event);
458 xcb_ungrab_pointer(conn, XCB_CURRENT_TIME);
459 xcb_destroy_window(conn, helpwin);
460 xcb_destroy_window(conn, grabwin);
463 Workspace *ws = con->workspace;
464 if (orientation == O_VERTICAL) {
465 LOG("Resize was from X = %d to X = %d\n", event->root_x, new_position);
466 if (event->root_x == new_position) {
467 LOG("Nothing changed, not updating anything\n");
471 /* Save the old unoccupied space to re-evaluate the other containers (not first or second) later */
472 int old_unoccupied_x = get_unoccupied_x(ws, first->row);
474 /* Convert 0 (for default width_factor) to actual numbers */
475 if (first->width_factor == 0)
476 first->width_factor = ((float)ws->rect.width / ws->cols) / ws->rect.width;
477 else first->width_factor = ((first->width_factor * old_unoccupied_x) / ws->rect.width);
479 if (second->width_factor == 0)
480 second->width_factor = ((float)ws->rect.width / ws->cols) / ws->rect.width;
481 else second->width_factor = ((second->width_factor * old_unoccupied_x) / ws->rect.width);
485 LOG("old_unoccupied_x = %d\n", old_unoccupied_x);
487 LOG("Old first->width_factor = %f\n", first->width_factor);
488 LOG("Old second->width_factor = %f\n", second->width_factor);
490 first->width_factor *= (float)(first->width + (new_position - event->root_x)) / first->width;
491 second->width_factor *= (float)(second->width - (new_position - event->root_x)) / second->width;
493 LOG("new unoccupied_x = %d\n", get_unoccupied_x(ws, first->row));
494 LOG("old_unoccupied_x = %d\n", old_unoccupied_x);
496 for (int col = 0; col < ws->cols; col++) {
497 Container *con = ws->table[col][first->row];
498 if (con == first || con == second)
501 LOG("Updating other container (current width_factor = %f)\n", con->width_factor);
502 con->width_factor = ((con->width_factor * old_unoccupied_x) / get_unoccupied_x(ws, first->row));
503 LOG("to %f\n", con->width_factor);
506 LOG("New first->width_factor = %f\n", first->width_factor);
507 LOG("New second->width_factor = %f\n", second->width_factor);
511 LOG("Resize was from Y = %d to Y = %d\n", event->root_y, new_position);
512 if (event->root_y == new_position) {
513 LOG("Nothing changed, not updating anything\n");
517 /* Convert 0 (for default height_factor) to actual numbers */
518 if (first->height_factor == 0)
519 first->height_factor = ((float)ws->rect.height / ws->rows) / ws->rect.height;
520 if (second->height_factor == 0)
521 second->height_factor = ((float)ws->rect.height / ws->rows) / ws->rect.height;
523 first->height_factor *= (float)(first->height + (new_position - event->root_y)) / first->height;
524 second->height_factor *= (float)(second->height - (new_position - event->root_y)) / second->height;
533 * A new window appeared on the screen (=was mapped), so let’s manage it.
536 int handle_map_request(void *prophs, xcb_connection_t *conn, xcb_map_request_event_t *event) {
537 xcb_get_window_attributes_cookie_t cookie;
538 xcb_get_window_attributes_reply_t *reply;
540 cookie = xcb_get_window_attributes_unchecked(conn, event->window);
542 if ((reply = xcb_get_window_attributes_reply(conn, cookie, NULL)) == NULL) {
543 LOG("Could not get window attributes\n");
547 window_attributes_t wa = { TAG_VALUE };
548 LOG("override_redirect = %d\n", reply->override_redirect);
549 wa.u.override_redirect = reply->override_redirect;
550 LOG("window = 0x%08x, serial is %d.\n", event->window, event->sequence);
551 add_ignore_event(event->sequence);
553 manage_window(prophs, conn, event->window, wa);
558 * Configure requests are received when the application wants to resize windows on their own.
560 * We generate a synthethic configure notify event to signalize the client its "new" position.
563 int handle_configure_request(void *prophs, xcb_connection_t *conn, xcb_configure_request_event_t *event) {
564 LOG("configure-request, serial %d\n", event->sequence);
565 LOG("event->window = %08x\n", event->window);
566 LOG("application wants to be at %dx%d with %dx%d\n", event->x, event->y, event->width, event->height);
568 Client *client = table_get(&by_child, event->window);
569 if (client == NULL) {
570 LOG("This client is not mapped, so we don't care and just tell the client that he will get its size\n");
571 Rect rect = {event->x, event->y, event->width, event->height};
572 fake_configure_notify(conn, rect, event->window);
576 fake_absolute_configure_notify(conn, client);
582 * Configuration notifies are only handled because we need to set up ignore for the following
583 * enter notify events
586 int handle_configure_event(void *prophs, xcb_connection_t *conn, xcb_configure_notify_event_t *event) {
587 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
589 LOG("handle_configure_event for window %08x\n", event->window);
590 LOG("event->type = %d, \n", event->response_type);
591 LOG("event->x = %d, ->y = %d, ->width = %d, ->height = %d\n", event->x, event->y, event->width, event->height);
593 /* We ignore this sequence twice because events for child and frame should be ignored */
594 add_ignore_event(event->sequence);
595 add_ignore_event(event->sequence);
597 if (event->event == root) {
598 LOG("reconfigure of the root window, need to xinerama\n");
599 /* FIXME: Somehow, this is occuring too often. Therefore, we check for 0/0,
600 but is there a better way? */
601 if (event->x == 0 && event->y == 0)
602 xinerama_requery_screens(conn);
610 * Our window decorations were unmapped. That means, the window will be killed now,
611 * so we better clean up before.
614 int handle_unmap_notify_event(void *data, xcb_connection_t *conn, xcb_unmap_notify_event_t *event) {
615 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
617 add_ignore_event(event->sequence);
619 Client *client = table_get(&by_child, event->window);
620 /* First, we need to check if the client is awaiting an unmap-request which
621 was generated by us reparenting the window. In that case, we just ignore it. */
622 if (client != NULL && client->awaiting_useless_unmap) {
623 LOG("Dropping this unmap request, it was generated by reparenting\n");
624 client->awaiting_useless_unmap = false;
628 LOG("event->window = %08x, event->event = %08x\n", event->window, event->event);
629 LOG("UnmapNotify for 0x%08x (received from 0x%08x)\n", event->window, event->event);
630 if (client == NULL) {
631 LOG("not a managed window. Ignoring.\n");
633 /* This was most likely the destroyed frame of a client which is
634 * currently being unmapped, so we add this sequence (again!) to
635 * the ignore list (enter_notify events will get sent for both,
636 * the child and its frame). */
637 add_ignore_event(event->sequence);
642 client = table_remove(&by_child, event->window);
644 if (client->name != NULL)
647 if (client->container != NULL) {
648 Container *con = client->container;
650 /* If this was the fullscreen client, we need to unset it */
651 if (client->fullscreen)
652 con->workspace->fullscreen_client = NULL;
654 /* Remove the client from the list of clients */
655 remove_client_from_container(conn, client, con);
657 /* Set focus to the last focused client in this container */
658 con->currently_focused = get_last_focused_client(conn, con, NULL);
660 /* Only if this is the active container, we need to really change focus */
661 if ((con->currently_focused != NULL) && ((con == CUR_CELL) || client->fullscreen))
662 set_focus(conn, con->currently_focused, true);
666 LOG("Removing from dock clients\n");
667 SLIST_REMOVE(&(client->workspace->screen->dock_clients), client, Client, dock_clients);
670 LOG("child of 0x%08x.\n", client->frame);
671 xcb_reparent_window(conn, client->child, root, 0, 0);
672 xcb_destroy_window(conn, client->frame);
674 table_remove(&by_parent, client->frame);
676 if (client->container != NULL) {
677 cleanup_table(conn, client->container->workspace);
678 fix_colrowspan(conn, client->container->workspace);
681 /* Let’s see how many clients there are left on the workspace to delete it if it’s empty */
682 bool workspace_empty = true;
683 FOR_TABLE(client->workspace)
684 if (!CIRCLEQ_EMPTY(&(client->workspace->table[cols][rows]->clients))) {
685 workspace_empty = false;
690 TAILQ_FOREACH(screen, virtual_screens, screens)
691 if (screen->current_workspace == client->workspace->num) {
692 workspace_empty = false;
697 client->workspace->screen = NULL;
707 * Called when a window changes its title
710 int handle_windowname_change(void *data, xcb_connection_t *conn, uint8_t state,
711 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
712 LOG("window's name changed.\n");
713 if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
714 LOG("_NET_WM_NAME not specified, not changing\n");
717 Client *client = table_get(&by_child, window);
721 /* Save the old pointer to make the update atomic */
724 asprintf(&new_name, "%.*s", xcb_get_property_value_length(prop), (char*)xcb_get_property_value(prop));
725 /* Convert it to UCS-2 here for not having to convert it later every time we want to pass it to X */
726 char *ucs2_name = convert_utf8_to_ucs2(new_name, &new_len);
727 LOG("Name should change to \"%s\"\n", new_name);
730 /* Check if they are the same and don’t update if so.
731 Note the use of new_len * 2 to check all bytes as each glyph takes 2 bytes.
732 Also note the use of memcmp() instead of strncmp() because the latter stops on nullbytes,
733 but UCS-2 uses nullbytes to fill up glyphs which only use one byte. */
734 if ((new_len == client->name_len) &&
735 (client->name != NULL) &&
736 (memcmp(client->name, ucs2_name, new_len * 2) == 0)) {
737 LOG("Name did not change, not updating\n");
742 char *old_name = client->name;
743 client->name = ucs2_name;
744 client->name_len = new_len;
745 client->uses_net_wm_name = true;
749 /* If the client is a dock window, we don’t need to render anything */
753 if (client->container->mode == MODE_STACK)
754 render_container(conn, client->container);
755 else decorate_window(conn, client, client->frame, client->titlegc, 0);
762 * We handle legacy window names (titles) which are in COMPOUND_TEXT encoding. However, we
763 * just pass them along, so when containing non-ASCII characters, those will be rendering
764 * incorrectly. In order to correctly render unicode window titles in i3, an application
765 * has to set _NET_WM_NAME, which is in UTF-8 encoding.
767 * On every update, a message is put out to the user, so he may improve the situation and
768 * update applications which display filenames in their title to correctly use
769 * _NET_WM_NAME and therefore support unicode.
772 int handle_windowname_change_legacy(void *data, xcb_connection_t *conn, uint8_t state,
773 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
774 LOG("window's name changed (legacy).\n");
775 if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
776 LOG("prop == NULL\n");
779 Client *client = table_get(&by_child, window);
783 if (client->uses_net_wm_name) {
784 LOG("This client is capable of _NET_WM_NAME, ignoring legacy name\n");
788 /* Save the old pointer to make the update atomic */
790 if (asprintf(&new_name, "%.*s", xcb_get_property_value_length(prop), (char*)xcb_get_property_value(prop)) == -1) {
791 perror("Could not get old name");
792 LOG("Could not get old name\n");
795 /* Convert it to UCS-2 here for not having to convert it later every time we want to pass it to X */
796 LOG("Name should change to \"%s\"\n", new_name);
798 /* Check if they are the same and don’t update if so. */
799 if (client->name != NULL &&
800 strlen(new_name) == strlen(client->name) &&
801 strcmp(client->name, new_name) == 0) {
802 LOG("Name did not change, not updating\n");
807 LOG("Using legacy window title. Note that in order to get Unicode window titles in i3,"
808 "the application has to set _NET_WM_NAME which is in UTF-8 encoding.\n");
810 char *old_name = client->name;
811 client->name = new_name;
812 client->name_len = -1;
814 if (old_name != NULL)
817 /* If the client is a dock window, we don’t need to render anything */
821 if (client->container->mode == MODE_STACK)
822 render_container(conn, client->container);
823 else decorate_window(conn, client, client->frame, client->titlegc, 0);
830 * Updates the client’s WM_CLASS property
833 int handle_windowclass_change(void *data, xcb_connection_t *conn, uint8_t state,
834 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
835 LOG("window class changed\n");
836 if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
837 LOG("prop == NULL\n");
840 Client *client = table_get(&by_child, window);
844 if (asprintf(&new_class, "%.*s", xcb_get_property_value_length(prop), (char*)xcb_get_property_value(prop)) == -1) {
845 perror("Could not get window class");
846 LOG("Could not get window class\n");
850 LOG("changed to %s\n", new_class);
851 char *old_class = client->window_class;
852 client->window_class = new_class;
859 * Expose event means we should redraw our windows (= title bar)
862 int handle_expose_event(void *data, xcb_connection_t *conn, xcb_expose_event_t *event) {
863 /* event->count is the number of minimum remaining expose events for this window, so we
864 skip all events but the last one */
865 if (event->count != 0)
867 LOG("window = %08x\n", event->window);
869 Client *client = table_get(&by_parent, event->window);
870 if (client == NULL) {
871 /* There was no client in the table, so this is probably an expose event for
872 one of our stack_windows. */
873 struct Stack_Window *stack_win;
874 SLIST_FOREACH(stack_win, &stack_wins, stack_windows)
875 if (stack_win->window == event->window) {
876 render_container(conn, stack_win->container);
880 /* …or one of the bars? */
882 TAILQ_FOREACH(screen, virtual_screens, screens)
883 if (screen->bar == event->window)
888 LOG("got client %s\n", client->name);
890 LOG("this is a dock\n");
894 if (client->container->mode != MODE_STACK)
895 decorate_window(conn, client, client->frame, client->titlegc, 0);
897 uint32_t background_color;
898 /* Distinguish if the window is currently focused… */
899 if (CUR_CELL->currently_focused == client)
900 background_color = get_colorpixel(conn, "#285577");
901 /* …or if it is the focused window in a not focused container */
902 else background_color = get_colorpixel(conn, "#555555");
904 /* Set foreground color to current focused color, line width to 2 */
905 uint32_t values[] = {background_color, 2};
906 xcb_change_gc(conn, client->titlegc, XCB_GC_FOREGROUND | XCB_GC_LINE_WIDTH, values);
908 /* Draw the border, the ±1 is for line width = 2 */
909 xcb_point_t points[] = {{1, 0}, /* left upper edge */
910 {1, client->rect.height-1}, /* left bottom edge */
911 {client->rect.width-1, client->rect.height-1}, /* right bottom edge */
912 {client->rect.width-1, 0}}; /* right upper edge */
913 xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, client->frame, client->titlegc, 4, points);
915 /* Draw a black background */
916 xcb_change_gc_single(conn, client->titlegc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#000000"));
917 xcb_rectangle_t crect = {2, 0, client->rect.width - (2 + 2), client->rect.height - 2};
918 xcb_poly_fill_rectangle(conn, client->frame, client->titlegc, 1, &crect);
925 * Handle client messages (EWMH)
928 int handle_client_message(void *data, xcb_connection_t *conn, xcb_client_message_event_t *event) {
929 LOG("client_message\n");
931 if (event->type == atoms[_NET_WM_STATE]) {
932 if (event->format != 32 || event->data.data32[1] != atoms[_NET_WM_STATE_FULLSCREEN])
937 Client *client = table_get(&by_child, event->window);
941 /* Check if the fullscreen state should be toggled */
942 if ((client->fullscreen &&
943 (event->data.data32[0] == _NET_WM_STATE_REMOVE ||
944 event->data.data32[0] == _NET_WM_STATE_TOGGLE)) ||
945 (!client->fullscreen &&
946 (event->data.data32[0] == _NET_WM_STATE_ADD ||
947 event->data.data32[0] == _NET_WM_STATE_TOGGLE)))
948 toggle_fullscreen(conn, client);
950 LOG("unhandled clientmessage\n");
957 int handle_window_type(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
958 xcb_atom_t atom, xcb_get_property_reply_t *property) {
959 /* TODO: Implement this one. To do this, implement a little test program which sleep(1)s
960 before changing this property. */
961 LOG("_NET_WM_WINDOW_TYPE changed, this is not yet implemented.\n");
966 * Handles the size hints set by a window, but currently only the part necessary for displaying
967 * clients proportionally inside their frames (mplayer for example)
969 * See ICCCM 4.1.2.3 for more details
972 int handle_normal_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
973 xcb_atom_t name, xcb_get_property_reply_t *reply) {
974 LOG("handle_normal_hints\n");
975 Client *client = table_get(&by_child, window);
976 if (client == NULL) {
977 LOG("No such client\n");
980 xcb_size_hints_t size_hints;
982 /* If the hints were already in this event, use them, if not, request them */
984 xcb_get_wm_size_hints_from_reply(&size_hints, reply);
986 xcb_get_wm_normal_hints_reply(conn, xcb_get_wm_normal_hints_unchecked(conn, client->child), &size_hints, NULL);
988 /* If no aspect ratio was set or if it was invalid, we ignore the hints */
989 if (!(size_hints.flags & XCB_SIZE_HINT_P_ASPECT) ||
990 (size_hints.min_aspect_num <= 0) ||
991 (size_hints.min_aspect_den <= 0)) {
992 LOG("No aspect ratio set, ignoring\n");
996 LOG("window is %08x / %s\n", client->child, client->name);
998 int base_width = 0, base_height = 0,
999 min_width = 0, min_height = 0;
1001 /* base_width/height are the desired size of the window.
1002 We check if either the program-specified size or the program-specified
1003 min-size is available */
1004 if (size_hints.flags & XCB_SIZE_HINT_P_SIZE) {
1005 base_width = size_hints.base_width;
1006 base_height = size_hints.base_height;
1007 } else if (size_hints.flags & XCB_SIZE_HINT_P_MIN_SIZE) {
1008 base_width = size_hints.min_width;
1009 base_height = size_hints.min_height;
1012 if (size_hints.flags & XCB_SIZE_HINT_P_MIN_SIZE) {
1013 min_width = size_hints.min_width;
1014 min_height = size_hints.min_height;
1015 } else if (size_hints.flags & XCB_SIZE_HINT_P_SIZE) {
1016 min_width = size_hints.base_width;
1017 min_height = size_hints.base_height;
1020 double width = client->rect.width - base_width;
1021 double height = client->rect.height - base_height;
1022 /* Convert numerator/denominator to a double */
1023 double min_aspect = (double)size_hints.min_aspect_num / size_hints.min_aspect_den;
1024 double max_aspect = (double)size_hints.max_aspect_num / size_hints.min_aspect_den;
1026 LOG("min_aspect = %f, max_aspect = %f\n", min_aspect, max_aspect);
1027 LOG("width = %f, height = %f\n", width, height);
1029 /* Sanity checks, this is user-input, in a way */
1030 if (max_aspect <= 0 || min_aspect <= 0 || height == 0 || (width / height) <= 0)
1033 /* Check if we need to set proportional_* variables using the correct ratio */
1034 if ((width / height) < min_aspect) {
1035 client->proportional_width = width;
1036 client->proportional_height = width / min_aspect;
1037 } else if ((width / height) > max_aspect) {
1038 client->proportional_width = width;
1039 client->proportional_height = width / max_aspect;
1042 client->force_reconfigure = true;
1044 if (client->container != NULL) {
1045 render_container(conn, client->container);