4 * i3 - an improved dynamic tiling window manager
6 * © 2009 Michael Stapelberg and contributors
8 * See file LICENSE for license information.
18 #include <xcb/xcb_atom.h>
19 #include <xcb/xcb_icccm.h>
21 #include <X11/XKBlib.h>
38 #include "workspace.h"
40 /* After mapping/unmapping windows, a notify event is generated. However, we don’t want it,
41 since it’d trigger an infinite loop of switching between the different windows when
42 changing workspaces */
43 static SLIST_HEAD(ignore_head, Ignore_Event) ignore_events;
45 static void add_ignore_event(const int sequence) {
46 struct Ignore_Event *event = smalloc(sizeof(struct Ignore_Event));
48 event->sequence = sequence;
49 event->added = time(NULL);
51 SLIST_INSERT_HEAD(&ignore_events, event, ignore_events);
55 * Checks if the given sequence is ignored and returns true if so.
58 static bool event_is_ignored(const int sequence) {
59 struct Ignore_Event *event;
60 time_t now = time(NULL);
61 for (event = SLIST_FIRST(&ignore_events); event != SLIST_END(&ignore_events);) {
62 if ((now - event->added) > 5) {
63 struct Ignore_Event *save = event;
64 event = SLIST_NEXT(event, ignore_events);
65 SLIST_REMOVE(&ignore_events, save, Ignore_Event, ignore_events);
67 } else event = SLIST_NEXT(event, ignore_events);
70 SLIST_FOREACH(event, &ignore_events, ignore_events) {
71 if (event->sequence == sequence) {
72 SLIST_REMOVE(&ignore_events, event, Ignore_Event, ignore_events);
82 * Due to bindings like Mode_switch + <a>, we need to bind some keys in XCB_GRAB_MODE_SYNC.
83 * Therefore, we just replay all key presses.
86 int handle_key_release(void *ignored, xcb_connection_t *conn, xcb_key_release_event_t *event) {
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, state raw = %d\n", event->detail, event->state);
100 /* Remove the numlock bit, all other bits are modifiers we can bind to */
101 uint16_t state_filtered = event->state & ~(xcb_numlock_mask | XCB_MOD_MASK_LOCK);
102 LOG("(removed numlock, state = %d)\n", state_filtered);
103 /* Only use the lower 8 bits of the state (modifier masks) so that mouse
104 * button masks are filtered out */
105 state_filtered &= 0xFF;
106 LOG("(removed upper 8 bits, state = %d)\n", state_filtered);
108 /* We need to get the keysym group (There are group 1 to group 4, each holding
109 two keysyms (without shift and with shift) using Xkb because X fails to
110 provide them reliably (it works in Xephyr, it does not in real X) */
112 if (XkbGetState(xkbdpy, XkbUseCoreKbd, &state) == Success && (state.group+1) == 2)
113 state_filtered |= BIND_MODE_SWITCH;
115 LOG("(checked mode_switch, state %d)\n", state_filtered);
117 /* Find the binding */
119 TAILQ_FOREACH(bind, bindings, bindings) {
120 /* First compare the modifiers */
121 if (bind->mods != state_filtered)
124 /* If a symbol was specified by the user, we need to look in
125 * the array of translated keycodes for the event’s keycode */
126 if (bind->symbol != NULL) {
127 if (memmem(bind->translated_to,
128 bind->number_keycodes * sizeof(xcb_keycode_t),
129 &(event->detail), sizeof(xcb_keycode_t)) != NULL)
132 /* This case is easier: The user specified a keycode */
133 if (bind->keycode == event->detail)
138 /* No match? Then it was an actively grabbed key, that is with Mode_switch, and
139 the user did not press Mode_switch, so just pass it… */
140 if (bind == TAILQ_END(bindings)) {
141 xcb_allow_events(conn, ReplayKeyboard, event->time);
146 parse_command(conn, bind->command);
147 if (state_filtered & BIND_MODE_SWITCH) {
148 LOG("Mode_switch -> allow_events(SyncKeyboard)\n");
149 xcb_allow_events(conn, SyncKeyboard, event->time);
156 * Called with coordinates of an enter_notify event or motion_notify event
157 * to check if the user crossed virtual screen boundaries and adjust the
158 * current workspace, if so.
161 static void check_crossing_screen_boundary(uint32_t x, uint32_t y) {
164 if ((screen = get_screen_containing(x, y)) == NULL) {
165 LOG("ERROR: No such screen\n");
168 if (screen == c_ws->screen)
171 c_ws->current_row = current_row;
172 c_ws->current_col = current_col;
173 c_ws = screen->current_workspace;
174 current_row = c_ws->current_row;
175 current_col = c_ws->current_col;
176 LOG("We're now on virtual screen number %d\n", screen->num);
180 * When the user moves the mouse pointer onto a window, this callback gets called.
183 int handle_enter_notify(void *ignored, xcb_connection_t *conn, xcb_enter_notify_event_t *event) {
184 LOG("enter_notify for %08x, mode = %d, detail %d, serial %d\n", event->event, event->mode, event->detail, event->sequence);
185 if (event->mode != XCB_NOTIFY_MODE_NORMAL) {
186 LOG("This was not a normal notify, ignoring\n");
189 /* Some events are not interesting, because they were not generated actively by the
190 user, but by reconfiguration of windows */
191 if (event_is_ignored(event->sequence))
194 /* This was either a focus for a client’s parent (= titlebar)… */
195 Client *client = table_get(&by_parent, event->event);
196 /* …or the client itself */
198 client = table_get(&by_child, event->event);
200 /* Check for stack windows */
201 if (client == NULL) {
202 struct Stack_Window *stack_win;
203 SLIST_FOREACH(stack_win, &stack_wins, stack_windows)
204 if (stack_win->window == event->event) {
205 client = stack_win->container->currently_focused;
211 /* If not, then the user moved his cursor to the root window. In that case, we adjust c_ws */
212 if (client == NULL) {
213 LOG("Getting screen at %d x %d\n", event->root_x, event->root_y);
214 check_crossing_screen_boundary(event->root_x, event->root_y);
218 /* Do plausibility checks: This event may be useless for us if it occurs on a window
219 which is in a stacked container but not the focused one */
220 if (client->container != NULL &&
221 client->container->mode == MODE_STACK &&
222 client->container->currently_focused != client) {
223 LOG("Plausibility check says: no\n");
227 if (client->workspace != c_ws && client->workspace->screen == c_ws->screen) {
228 /* This can happen when a client gets assigned to a different workspace than
229 * the current one (see src/mainx.c:reparent_window). Shortly after it was created,
230 * an enter_notify will follow. */
231 LOG("enter_notify for a client on a different workspace but the same screen, ignoring\n");
235 set_focus(conn, client, false);
241 * When the user moves the mouse but does not change the active window
242 * (e.g. when having no windows opened but moving mouse on the root screen
243 * and crossing virtual screen boundaries), this callback gets called.
246 int handle_motion_notify(void *ignored, xcb_connection_t *conn, xcb_motion_notify_event_t *event) {
247 /* Skip events where the pointer was over a child window, we are only
248 * interested in events on the root window. */
249 if (event->child != 0)
252 check_crossing_screen_boundary(event->root_x, event->root_y);
258 * Called when the keyboard mapping changes (for example by using Xmodmap),
259 * we need to update our key bindings then (re-translate symbols).
262 int handle_mapping_notify(void *ignored, xcb_connection_t *conn, xcb_mapping_notify_event_t *event) {
263 if (event->request != XCB_MAPPING_KEYBOARD &&
264 event->request != XCB_MAPPING_MODIFIER)
267 LOG("Received mapping_notify for keyboard or modifier mapping, re-grabbing keys\n");
268 xcb_refresh_keyboard_mapping(keysyms, event);
270 xcb_get_numlock_mask(conn);
272 ungrab_all_keys(conn);
279 * A new window appeared on the screen (=was mapped), so let’s manage it.
282 int handle_map_request(void *prophs, xcb_connection_t *conn, xcb_map_request_event_t *event) {
283 xcb_get_window_attributes_cookie_t cookie;
285 cookie = xcb_get_window_attributes_unchecked(conn, event->window);
287 LOG("window = 0x%08x, serial is %d.\n", event->window, event->sequence);
288 add_ignore_event(event->sequence);
290 manage_window(prophs, conn, event->window, cookie, false);
295 * Configure requests are received when the application wants to resize windows on their own.
297 * We generate a synthethic configure notify event to signalize the client its "new" position.
300 int handle_configure_request(void *prophs, xcb_connection_t *conn, xcb_configure_request_event_t *event) {
301 LOG("window 0x%08x wants to be at %dx%d with %dx%d\n",
302 event->window, event->x, event->y, event->width, event->height);
304 Client *client = table_get(&by_child, event->window);
305 if (client == NULL) {
309 #define COPY_MASK_MEMBER(mask_member, event_member) do { \
310 if (event->value_mask & mask_member) { \
311 mask |= mask_member; \
312 values[c++] = event->event_member; \
316 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_X, x);
317 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_Y, y);
318 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_WIDTH, width);
319 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_HEIGHT, height);
320 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_BORDER_WIDTH, border_width);
321 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_SIBLING, sibling);
322 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_STACK_MODE, stack_mode);
324 xcb_configure_window(conn, event->window, mask, values);
330 if (client->fullscreen) {
331 LOG("Client is in fullscreen mode\n");
333 Rect child_rect = client->workspace->rect;
334 child_rect.x = child_rect.y = 0;
335 fake_configure_notify(conn, child_rect, client->child);
340 /* Floating clients can be reconfigured */
341 if (client_is_floating(client)) {
342 i3Font *font = load_font(conn, config.font);
343 int mode = (client->container != NULL ? client->container->mode : MODE_DEFAULT);
345 if (event->value_mask & XCB_CONFIG_WINDOW_X)
346 client->rect.x = event->x;
347 if (event->value_mask & XCB_CONFIG_WINDOW_Y)
348 client->rect.y = event->y;
349 if (event->value_mask & XCB_CONFIG_WINDOW_WIDTH) {
350 if (mode == MODE_STACK || mode == MODE_TABBED) {
351 client->rect.width = event->width + 2 + 2;
353 if (client->titlebar_position == TITLEBAR_OFF && client->borderless)
354 client->rect.width = event->width;
355 else if (client->titlebar_position == TITLEBAR_OFF && !client->borderless)
356 client->rect.width = event->width + (1 + 1);
357 else client->rect.width = event->width + (2 + 2);
360 if (event->value_mask & XCB_CONFIG_WINDOW_HEIGHT) {
361 if (mode == MODE_STACK || mode == MODE_TABBED) {
362 client->rect.height = event->height + 2;
364 if (client->titlebar_position == TITLEBAR_OFF && client->borderless)
365 client->rect.height = event->height;
366 else if (client->titlebar_position == TITLEBAR_OFF && !client->borderless)
367 client->rect.height = event->height + (1 + 1);
368 else client->rect.height = event->height + (font->height + 2 + 2) + 2;
372 LOG("Accepted new position/size for floating client: (%d, %d) size %d x %d\n",
373 client->rect.x, client->rect.y, client->rect.width, client->rect.height);
375 /* Push the new position/size to X11 */
376 reposition_client(conn, client);
377 resize_client(conn, client);
383 /* Dock clients can be reconfigured in their height */
385 LOG("Reconfiguring height of this dock client\n");
387 if (!(event->value_mask & XCB_CONFIG_WINDOW_HEIGHT)) {
388 LOG("Ignoring configure request, no height given\n");
392 client->desired_height = event->height;
393 render_workspace(conn, c_ws->screen, c_ws);
399 if (client->fullscreen) {
400 LOG("Client is in fullscreen mode\n");
402 Rect child_rect = client->container->workspace->rect;
403 child_rect.x = child_rect.y = 0;
404 fake_configure_notify(conn, child_rect, client->child);
409 fake_absolute_configure_notify(conn, client);
415 * Configuration notifies are only handled because we need to set up ignore for the following
416 * enter notify events
419 int handle_configure_event(void *prophs, xcb_connection_t *conn, xcb_configure_notify_event_t *event) {
420 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
422 /* We ignore this sequence twice because events for child and frame should be ignored */
423 add_ignore_event(event->sequence);
424 add_ignore_event(event->sequence);
426 if (event->event == root) {
427 LOG("event->x = %d, ->y = %d, ->width = %d, ->height = %d\n", event->x, event->y, event->width, event->height);
428 LOG("reconfigure of the root window, need to xinerama\n");
429 /* FIXME: Somehow, this is occuring too often. Therefore, we check for 0/0,
430 but is there a better way? */
431 if (event->x == 0 && event->y == 0)
432 xinerama_requery_screens(conn);
440 * Our window decorations were unmapped. That means, the window will be killed now,
441 * so we better clean up before.
444 int handle_unmap_notify_event(void *data, xcb_connection_t *conn, xcb_unmap_notify_event_t *event) {
445 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
447 add_ignore_event(event->sequence);
449 Client *client = table_get(&by_child, event->window);
450 /* First, we need to check if the client is awaiting an unmap-request which
451 was generated by us reparenting the window. In that case, we just ignore it. */
452 if (client != NULL && client->awaiting_useless_unmap) {
453 client->awaiting_useless_unmap = false;
457 LOG("event->window = %08x, event->event = %08x\n", event->window, event->event);
458 LOG("UnmapNotify for 0x%08x (received from 0x%08x)\n", event->window, event->event);
459 if (client == NULL) {
460 LOG("not a managed window. Ignoring.\n");
462 /* This was most likely the destroyed frame of a client which is
463 * currently being unmapped, so we add this sequence (again!) to
464 * the ignore list (enter_notify events will get sent for both,
465 * the child and its frame). */
466 add_ignore_event(event->sequence);
471 client = table_remove(&by_child, event->window);
473 /* If this was the fullscreen client, we need to unset it */
474 if (client->fullscreen)
475 client->workspace->fullscreen_client = NULL;
477 /* Clients without a container are either floating or dock windows */
478 if (client->container != NULL) {
479 Container *con = client->container;
481 /* Remove the client from the list of clients */
482 client_remove_from_container(conn, client, con, true);
484 /* Set focus to the last focused client in this container */
485 con->currently_focused = get_last_focused_client(conn, con, NULL);
487 /* Only if this is the active container, we need to really change focus */
488 if ((con->currently_focused != NULL) && ((con == CUR_CELL) || client->fullscreen))
489 set_focus(conn, con->currently_focused, true);
490 } else if (client_is_floating(client)) {
491 LOG("Removing from floating clients\n");
492 TAILQ_REMOVE(&(client->workspace->floating_clients), client, floating_clients);
493 SLIST_REMOVE(&(client->workspace->focus_stack), client, Client, focus_clients);
497 LOG("Removing from dock clients\n");
498 SLIST_REMOVE(&(client->workspace->screen->dock_clients), client, Client, dock_clients);
501 LOG("child of 0x%08x.\n", client->frame);
502 xcb_reparent_window(conn, client->child, root, 0, 0);
504 client_unmap(conn, client);
506 xcb_destroy_window(conn, client->frame);
508 table_remove(&by_parent, client->frame);
510 if (client->container != NULL) {
511 Workspace *workspace = client->container->workspace;
512 cleanup_table(conn, workspace);
513 fix_colrowspan(conn, workspace);
516 /* Let’s see how many clients there are left on the workspace to delete it if it’s empty */
517 bool workspace_empty = SLIST_EMPTY(&(client->workspace->focus_stack));
518 bool workspace_active = false;
519 Client *to_focus = (!workspace_empty ? SLIST_FIRST(&(client->workspace->focus_stack)) : NULL);
521 /* If this workspace is currently active, we don’t delete it */
523 TAILQ_FOREACH(screen, virtual_screens, screens)
524 if (screen->current_workspace == client->workspace) {
525 workspace_active = true;
526 workspace_empty = false;
531 client->workspace->screen = NULL;
533 /* Remove the urgency flag if set */
534 client->urgent = false;
535 workspace_update_urgent_flag(client->workspace);
537 FREE(client->window_class);
543 /* Ensure the focus is set to the next client in the focus stack or to
544 * the screen itself (if we do not focus the screen, it can happen that
545 * the focus is "nowhere" and thus keypress events will not be received
546 * by i3, thus the user cannot use any hotkeys). */
547 if (workspace_active) {
548 if (to_focus != NULL)
549 set_focus(conn, to_focus, true);
551 LOG("Restoring focus to root screen\n");
552 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, root, XCB_CURRENT_TIME);
561 * Called when a window changes its title
564 int handle_windowname_change(void *data, xcb_connection_t *conn, uint8_t state,
565 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
566 if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
567 LOG("_NET_WM_NAME not specified, not changing\n");
570 Client *client = table_get(&by_child, window);
574 /* Save the old pointer to make the update atomic */
577 asprintf(&new_name, "%.*s", xcb_get_property_value_length(prop), (char*)xcb_get_property_value(prop));
578 /* Convert it to UCS-2 here for not having to convert it later every time we want to pass it to X */
579 char *ucs2_name = convert_utf8_to_ucs2(new_name, &new_len);
580 LOG("_NET_WM_NAME changed to \"%s\"\n", new_name);
583 /* Check if they are the same and don’t update if so.
584 Note the use of new_len * 2 to check all bytes as each glyph takes 2 bytes.
585 Also note the use of memcmp() instead of strncmp() because the latter stops on nullbytes,
586 but UCS-2 uses nullbytes to fill up glyphs which only use one byte. */
587 if ((new_len == client->name_len) &&
588 (client->name != NULL) &&
589 (memcmp(client->name, ucs2_name, new_len * 2) == 0)) {
594 char *old_name = client->name;
595 client->name = ucs2_name;
596 client->name_len = new_len;
597 client->uses_net_wm_name = true;
601 /* If the client is a dock window, we don’t need to render anything */
605 if (client->container != NULL &&
606 (client->container->mode == MODE_STACK ||
607 client->container->mode == MODE_TABBED))
608 render_container(conn, client->container);
609 else decorate_window(conn, client, client->frame, client->titlegc, 0, 0);
616 * We handle legacy window names (titles) which are in COMPOUND_TEXT encoding. However, we
617 * just pass them along, so when containing non-ASCII characters, those will be rendering
618 * incorrectly. In order to correctly render unicode window titles in i3, an application
619 * has to set _NET_WM_NAME, which is in UTF-8 encoding.
621 * On every update, a message is put out to the user, so he may improve the situation and
622 * update applications which display filenames in their title to correctly use
623 * _NET_WM_NAME and therefore support unicode.
626 int handle_windowname_change_legacy(void *data, xcb_connection_t *conn, uint8_t state,
627 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
628 if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
629 LOG("prop == NULL\n");
632 Client *client = table_get(&by_child, window);
636 /* Client capable of _NET_WM_NAME, ignore legacy name changes */
637 if (client->uses_net_wm_name)
640 /* Save the old pointer to make the update atomic */
642 if (asprintf(&new_name, "%.*s", xcb_get_property_value_length(prop), (char*)xcb_get_property_value(prop)) == -1) {
643 perror("Could not get old name");
644 LOG("Could not get old name\n");
647 /* Convert it to UCS-2 here for not having to convert it later every time we want to pass it to X */
648 LOG("WM_NAME changed to \"%s\"\n", new_name);
650 /* Check if they are the same and don’t update if so. */
651 if (client->name != NULL &&
652 strlen(new_name) == strlen(client->name) &&
653 strcmp(client->name, new_name) == 0) {
658 LOG("Using legacy window title. Note that in order to get Unicode window titles in i3, "
659 "the application has to set _NET_WM_NAME which is in UTF-8 encoding.\n");
661 char *old_name = client->name;
662 client->name = new_name;
663 client->name_len = -1;
665 if (old_name != NULL)
668 /* If the client is a dock window, we don’t need to render anything */
672 if (client->container != NULL &&
673 (client->container->mode == MODE_STACK ||
674 client->container->mode == MODE_TABBED))
675 render_container(conn, client->container);
676 else decorate_window(conn, client, client->frame, client->titlegc, 0, 0);
683 * Updates the client’s WM_CLASS property
686 int handle_windowclass_change(void *data, xcb_connection_t *conn, uint8_t state,
687 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
688 if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
689 LOG("prop == NULL\n");
692 Client *client = table_get(&by_child, window);
696 if (asprintf(&new_class, "%.*s", xcb_get_property_value_length(prop), (char*)xcb_get_property_value(prop)) == -1) {
697 perror("Could not get window class");
698 LOG("Could not get window class\n");
702 LOG("WM_CLASS changed to %s\n", new_class);
703 char *old_class = client->window_class;
704 client->window_class = new_class;
707 if (!client->initialized)
710 if (strcmp(new_class, "tools") == 0 || strcmp(new_class, "Dialog") == 0) {
711 LOG("tool/dialog window, should we put it floating?\n");
712 if (client->floating == FLOATING_AUTO_OFF)
713 toggle_floating_mode(conn, client, true);
720 * Expose event means we should redraw our windows (= title bar)
723 int handle_expose_event(void *data, xcb_connection_t *conn, xcb_expose_event_t *event) {
724 /* event->count is the number of minimum remaining expose events for this window, so we
725 skip all events but the last one */
726 if (event->count != 0)
728 LOG("window = %08x\n", event->window);
730 Client *client = table_get(&by_parent, event->window);
731 if (client == NULL) {
732 /* There was no client in the table, so this is probably an expose event for
733 one of our stack_windows. */
734 struct Stack_Window *stack_win;
735 SLIST_FOREACH(stack_win, &stack_wins, stack_windows)
736 if (stack_win->window == event->window) {
737 render_container(conn, stack_win->container);
741 /* …or one of the bars? */
743 TAILQ_FOREACH(screen, virtual_screens, screens)
744 if (screen->bar == event->window)
752 if (client->container == NULL ||
753 (client->container->mode != MODE_STACK &&
754 client->container->mode != MODE_TABBED))
755 decorate_window(conn, client, client->frame, client->titlegc, 0, 0);
757 uint32_t background_color;
759 background_color = config.client.urgent.background;
760 /* Distinguish if the window is currently focused… */
761 else if (CUR_CELL != NULL && CUR_CELL->currently_focused == client)
762 background_color = config.client.focused.background;
763 /* …or if it is the focused window in a not focused container */
764 else background_color = config.client.focused_inactive.background;
766 /* Set foreground color to current focused color, line width to 2 */
767 uint32_t values[] = {background_color, 2};
768 xcb_change_gc(conn, client->titlegc, XCB_GC_FOREGROUND | XCB_GC_LINE_WIDTH, values);
770 /* Draw the border, the ±1 is for line width = 2 */
771 xcb_point_t points[] = {{1, 0}, /* left upper edge */
772 {1, client->rect.height-1}, /* left bottom edge */
773 {client->rect.width-1, client->rect.height-1}, /* right bottom edge */
774 {client->rect.width-1, 0}}; /* right upper edge */
775 xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, client->frame, client->titlegc, 4, points);
777 /* Draw a black background */
778 xcb_change_gc_single(conn, client->titlegc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#000000"));
779 if (client->titlebar_position == TITLEBAR_OFF) {
780 xcb_rectangle_t crect = {1, 0, client->rect.width - (1 + 1), client->rect.height - 1};
781 xcb_poly_fill_rectangle(conn, client->frame, client->titlegc, 1, &crect);
783 xcb_rectangle_t crect = {2, 0, client->rect.width - (2 + 2), client->rect.height - 2};
784 xcb_poly_fill_rectangle(conn, client->frame, client->titlegc, 1, &crect);
792 * Handle client messages (EWMH)
795 int handle_client_message(void *data, xcb_connection_t *conn, xcb_client_message_event_t *event) {
796 if (event->type == atoms[_NET_WM_STATE]) {
797 if (event->format != 32 || event->data.data32[1] != atoms[_NET_WM_STATE_FULLSCREEN])
800 Client *client = table_get(&by_child, event->window);
804 /* Check if the fullscreen state should be toggled */
805 if ((client->fullscreen &&
806 (event->data.data32[0] == _NET_WM_STATE_REMOVE ||
807 event->data.data32[0] == _NET_WM_STATE_TOGGLE)) ||
808 (!client->fullscreen &&
809 (event->data.data32[0] == _NET_WM_STATE_ADD ||
810 event->data.data32[0] == _NET_WM_STATE_TOGGLE)))
811 client_toggle_fullscreen(conn, client);
813 LOG("unhandled clientmessage\n");
820 int handle_window_type(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
821 xcb_atom_t atom, xcb_get_property_reply_t *property) {
822 /* TODO: Implement this one. To do this, implement a little test program which sleep(1)s
823 before changing this property. */
824 LOG("_NET_WM_WINDOW_TYPE changed, this is not yet implemented.\n");
829 * Handles the size hints set by a window, but currently only the part necessary for displaying
830 * clients proportionally inside their frames (mplayer for example)
832 * See ICCCM 4.1.2.3 for more details
835 int handle_normal_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
836 xcb_atom_t name, xcb_get_property_reply_t *reply) {
837 Client *client = table_get(&by_child, window);
838 if (client == NULL) {
839 LOG("Received WM_SIZE_HINTS for unknown client\n");
842 xcb_size_hints_t size_hints;
846 /* If the hints were already in this event, use them, if not, request them */
848 xcb_get_wm_size_hints_from_reply(&size_hints, reply);
850 xcb_get_wm_normal_hints_reply(conn, xcb_get_wm_normal_hints_unchecked(conn, client->child), &size_hints, NULL);
852 if ((size_hints.flags & XCB_SIZE_HINT_P_MIN_SIZE)) {
853 // TODO: Minimum size is not yet implemented
854 //LOG("Minimum size: %d (width) x %d (height)\n", size_hints.min_width, size_hints.min_height);
857 if ((size_hints.flags & XCB_SIZE_HINT_P_RESIZE_INC)) {
858 bool changed = false;
860 if (size_hints.width_inc > 0)
861 if (client->width_increment != size_hints.width_inc) {
862 client->width_increment = size_hints.width_inc;
865 if (size_hints.height_inc > 0)
866 if (client->height_increment != size_hints.height_inc) {
867 client->height_increment = size_hints.height_inc;
872 resize_client(conn, client);
877 int base_width = 0, base_height = 0;
879 /* base_width/height are the desired size of the window.
880 We check if either the program-specified size or the program-specified
881 min-size is available */
882 if (size_hints.flags & XCB_SIZE_HINT_P_SIZE) {
883 base_width = size_hints.base_width;
884 base_height = size_hints.base_height;
885 } else if (size_hints.flags & XCB_SIZE_HINT_P_MIN_SIZE) {
886 base_width = size_hints.min_width;
887 base_height = size_hints.min_height;
890 if (base_width != client->base_width ||
891 base_height != client->base_height) {
892 client->base_width = base_width;
893 client->base_height = base_height;
894 LOG("client's base_height changed to %d\n", base_height);
895 resize_client(conn, client);
898 /* If no aspect ratio was set or if it was invalid, we ignore the hints */
899 if (!(size_hints.flags & XCB_SIZE_HINT_P_ASPECT) ||
900 (size_hints.min_aspect_num <= 0) ||
901 (size_hints.min_aspect_den <= 0)) {
905 double width = client->rect.width - base_width;
906 double height = client->rect.height - base_height;
907 /* Convert numerator/denominator to a double */
908 double min_aspect = (double)size_hints.min_aspect_num / size_hints.min_aspect_den;
909 double max_aspect = (double)size_hints.max_aspect_num / size_hints.min_aspect_den;
911 LOG("Aspect ratio set: minimum %f, maximum %f\n", min_aspect, max_aspect);
912 LOG("width = %f, height = %f\n", width, height);
914 /* Sanity checks, this is user-input, in a way */
915 if (max_aspect <= 0 || min_aspect <= 0 || height == 0 || (width / height) <= 0)
918 /* Check if we need to set proportional_* variables using the correct ratio */
919 if ((width / height) < min_aspect) {
920 client->proportional_width = width;
921 client->proportional_height = width / min_aspect;
922 } else if ((width / height) > max_aspect) {
923 client->proportional_width = width;
924 client->proportional_height = width / max_aspect;
927 client->force_reconfigure = true;
929 if (client->container != NULL) {
930 render_container(conn, client->container);
938 * Handles the WM_HINTS property for extracting the urgency state of the window.
941 int handle_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
942 xcb_atom_t name, xcb_get_property_reply_t *reply) {
943 Client *client = table_get(&by_child, window);
944 if (client == NULL) {
945 LOG("Received WM_HINTS for unknown client\n");
948 xcb_wm_hints_t hints;
951 if (!xcb_get_wm_hints_from_reply(&hints, reply))
954 if (!xcb_get_wm_hints_reply(conn, xcb_get_wm_hints_unchecked(conn, client->child), &hints, NULL))
958 Client *last_focused = SLIST_FIRST(&(c_ws->focus_stack));
959 if (!client->urgent && client == last_focused) {
960 LOG("Ignoring urgency flag for current client\n");
964 /* Update the flag on the client directly */
965 client->urgent = (xcb_wm_hints_get_urgency(&hints) != 0);
967 LOG("Urgency flag changed to %d\n", client->urgent);
969 workspace_update_urgent_flag(client->workspace);
970 redecorate_window(conn, client);
972 /* If the workspace this client is on is not visible, we need to redraw
973 * the workspace bar */
974 if (!workspace_is_visible(client->workspace)) {
975 i3Screen *screen = client->workspace->screen;
976 render_workspace(conn, screen, screen->current_workspace);
984 * Handles the transient for hints set by a window, signalizing that this window is a popup window
985 * for some other window.
987 * See ICCCM 4.1.2.6 for more details
990 int handle_transient_for(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
991 xcb_atom_t name, xcb_get_property_reply_t *reply) {
992 Client *client = table_get(&by_child, window);
993 if (client == NULL) {
994 LOG("No such client\n");
998 xcb_window_t transient_for;
1000 if (reply != NULL) {
1001 if (!xcb_get_wm_transient_for_from_reply(&transient_for, reply))
1004 if (!xcb_get_wm_transient_for_reply(conn, xcb_get_wm_transient_for_unchecked(conn, window),
1005 &transient_for, NULL))
1009 if (client->floating == FLOATING_AUTO_OFF) {
1010 LOG("This is a popup window, putting into floating\n");
1011 toggle_floating_mode(conn, client, true);
1018 * Handles changes of the WM_CLIENT_LEADER atom which specifies if this is a
1019 * toolwindow (or similar) and to which window it belongs (logical parent).
1022 int handle_clientleader_change(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
1023 xcb_atom_t name, xcb_get_property_reply_t *prop) {
1025 prop = xcb_get_property_reply(conn, xcb_get_property_unchecked(conn,
1026 false, window, WM_CLIENT_LEADER, WINDOW, 0, 32), NULL);
1031 Client *client = table_get(&by_child, window);
1035 xcb_window_t *leader = xcb_get_property_value(prop);
1036 if (leader == NULL || *leader == 0)
1039 LOG("Client leader changed to %08x\n", *leader);
1041 client->leader = *leader;