4 * i3 - an improved dynamic tiling window manager
6 * © 2009-2010 Michael Stapelberg and contributors
8 * See file LICENSE for license information.
18 #include <xcb/xcb_atom.h>
19 #include <xcb/xcb_icccm.h>
20 #include <xcb/randr.h>
22 #include <X11/XKBlib.h>
39 #include "workspace.h"
41 #include "container.h"
44 /* After mapping/unmapping windows, a notify event is generated. However, we don’t want it,
45 since it’d trigger an infinite loop of switching between the different windows when
46 changing workspaces */
47 static SLIST_HEAD(ignore_head, Ignore_Event) ignore_events;
49 static void add_ignore_event(const int sequence) {
50 struct Ignore_Event *event = smalloc(sizeof(struct Ignore_Event));
52 event->sequence = sequence;
53 event->added = time(NULL);
55 SLIST_INSERT_HEAD(&ignore_events, event, ignore_events);
59 * Checks if the given sequence is ignored and returns true if so.
62 static bool event_is_ignored(const int sequence) {
63 struct Ignore_Event *event;
64 time_t now = time(NULL);
65 for (event = SLIST_FIRST(&ignore_events); event != SLIST_END(&ignore_events);) {
66 if ((now - event->added) > 5) {
67 struct Ignore_Event *save = event;
68 event = SLIST_NEXT(event, ignore_events);
69 SLIST_REMOVE(&ignore_events, save, Ignore_Event, ignore_events);
71 } else event = SLIST_NEXT(event, ignore_events);
74 SLIST_FOREACH(event, &ignore_events, ignore_events) {
75 if (event->sequence == sequence) {
76 SLIST_REMOVE(&ignore_events, event, Ignore_Event, ignore_events);
86 * Due to bindings like Mode_switch + <a>, we need to bind some keys in XCB_GRAB_MODE_SYNC.
87 * Therefore, we just replay all key presses.
90 int handle_key_release(void *ignored, xcb_connection_t *conn, xcb_key_release_event_t *event) {
91 xcb_allow_events(conn, XCB_ALLOW_REPLAY_KEYBOARD, event->time);
97 * There was a key press. We compare this key code with our bindings table and pass
98 * the bound action to parse_command().
101 int handle_key_press(void *ignored, xcb_connection_t *conn, xcb_key_press_event_t *event) {
102 DLOG("Keypress %d, state raw = %d\n", event->detail, event->state);
104 /* Remove the numlock bit, all other bits are modifiers we can bind to */
105 uint16_t state_filtered = event->state & ~(xcb_numlock_mask | XCB_MOD_MASK_LOCK);
106 DLOG("(removed numlock, state = %d)\n", state_filtered);
107 /* Only use the lower 8 bits of the state (modifier masks) so that mouse
108 * button masks are filtered out */
109 state_filtered &= 0xFF;
110 DLOG("(removed upper 8 bits, state = %d)\n", state_filtered);
113 /* We need to get the keysym group (There are group 1 to group 4, each holding
114 two keysyms (without shift and with shift) using Xkb because X fails to
115 provide them reliably (it works in Xephyr, it does not in real X) */
117 if (XkbGetState(xkbdpy, XkbUseCoreKbd, &state) == Success && (state.group+1) == 2)
118 state_filtered |= BIND_MODE_SWITCH;
121 DLOG("(checked mode_switch, state %d)\n", state_filtered);
123 /* Find the binding */
125 TAILQ_FOREACH(bind, bindings, bindings) {
126 /* First compare the modifiers */
127 if (bind->mods != state_filtered)
130 /* If a symbol was specified by the user, we need to look in
131 * the array of translated keycodes for the event’s keycode */
132 if (bind->symbol != NULL) {
133 if (memmem(bind->translated_to,
134 bind->number_keycodes * sizeof(xcb_keycode_t),
135 &(event->detail), sizeof(xcb_keycode_t)) != NULL)
138 /* This case is easier: The user specified a keycode */
139 if (bind->keycode == event->detail)
144 /* No match? Then it was an actively grabbed key, that is with Mode_switch, and
145 the user did not press Mode_switch, so just pass it… */
146 if (bind == TAILQ_END(bindings)) {
147 xcb_allow_events(conn, ReplayKeyboard, event->time);
152 parse_command(conn, bind->command);
153 if (state_filtered & BIND_MODE_SWITCH) {
154 DLOG("Mode_switch -> allow_events(SyncKeyboard)\n");
155 xcb_allow_events(conn, SyncKeyboard, event->time);
162 * Called with coordinates of an enter_notify event or motion_notify event
163 * to check if the user crossed virtual screen boundaries and adjust the
164 * current workspace, if so.
167 static void check_crossing_screen_boundary(uint32_t x, uint32_t y) {
170 if ((output = get_output_containing(x, y)) == NULL) {
171 ELOG("ERROR: No such screen\n");
174 if (output == c_ws->output)
177 c_ws->current_row = current_row;
178 c_ws->current_col = current_col;
179 c_ws = output->current_workspace;
180 current_row = c_ws->current_row;
181 current_col = c_ws->current_col;
182 DLOG("We're now on output %p\n", output);
184 /* While usually this function is only called when the user switches
185 * to a different output using his mouse (and thus the output is
186 * empty), it may be that the following race condition occurs:
187 * 1) the user actives a new output (say VGA1).
188 * 2) the cursor is sent to the first pixel of the new VGA1, thus
189 * generating an enter_notify for the screen (the enter_notify
190 * is not yet received by i3).
191 * 3) i3 requeries screen configuration and maps a workspace onto the
193 * 4) the enter_notify event arrives and c_ws is set to the new
194 * workspace but the existing windows on the new workspace are not
197 * Therefore, we re-set the focus here to be sure it’s correct. */
198 Client *first_client = SLIST_FIRST(&(c_ws->focus_stack));
199 if (first_client != NULL)
200 set_focus(global_conn, first_client, true);
204 * When the user moves the mouse pointer onto a window, this callback gets called.
207 int handle_enter_notify(void *ignored, xcb_connection_t *conn, xcb_enter_notify_event_t *event) {
208 DLOG("enter_notify for %08x, mode = %d, detail %d, serial %d\n", event->event, event->mode, event->detail, event->sequence);
209 if (event->mode != XCB_NOTIFY_MODE_NORMAL) {
210 DLOG("This was not a normal notify, ignoring\n");
213 /* Some events are not interesting, because they were not generated actively by the
214 user, but by reconfiguration of windows */
215 if (event_is_ignored(event->sequence))
218 /* This was either a focus for a client’s parent (= titlebar)… */
219 Client *client = table_get(&by_parent, event->event);
220 /* …or the client itself */
222 client = table_get(&by_child, event->event);
224 /* Check for stack windows */
225 if (client == NULL) {
226 struct Stack_Window *stack_win;
227 SLIST_FOREACH(stack_win, &stack_wins, stack_windows)
228 if (stack_win->window == event->event) {
229 client = stack_win->container->currently_focused;
235 /* If not, then the user moved his cursor to the root window. In that case, we adjust c_ws */
236 if (client == NULL) {
237 DLOG("Getting screen at %d x %d\n", event->root_x, event->root_y);
238 check_crossing_screen_boundary(event->root_x, event->root_y);
242 /* Do plausibility checks: This event may be useless for us if it occurs on a window
243 which is in a stacked container but not the focused one */
244 if (client->container != NULL &&
245 client->container->mode == MODE_STACK &&
246 client->container->currently_focused != client) {
247 DLOG("Plausibility check says: no\n");
251 if (client->workspace != c_ws && client->workspace->output == c_ws->output) {
252 /* This can happen when a client gets assigned to a different workspace than
253 * the current one (see src/mainx.c:reparent_window). Shortly after it was created,
254 * an enter_notify will follow. */
255 DLOG("enter_notify for a client on a different workspace but the same screen, ignoring\n");
259 if (!config.disable_focus_follows_mouse)
260 set_focus(conn, client, false);
266 * When the user moves the mouse but does not change the active window
267 * (e.g. when having no windows opened but moving mouse on the root screen
268 * and crossing virtual screen boundaries), this callback gets called.
271 int handle_motion_notify(void *ignored, xcb_connection_t *conn, xcb_motion_notify_event_t *event) {
272 /* Skip events where the pointer was over a child window, we are only
273 * interested in events on the root window. */
274 if (event->child != 0)
277 check_crossing_screen_boundary(event->root_x, event->root_y);
283 * Called when the keyboard mapping changes (for example by using Xmodmap),
284 * we need to update our key bindings then (re-translate symbols).
287 int handle_mapping_notify(void *ignored, xcb_connection_t *conn, xcb_mapping_notify_event_t *event) {
288 if (event->request != XCB_MAPPING_KEYBOARD &&
289 event->request != XCB_MAPPING_MODIFIER)
292 DLOG("Received mapping_notify for keyboard or modifier mapping, re-grabbing keys\n");
293 xcb_refresh_keyboard_mapping(keysyms, event);
295 xcb_get_numlock_mask(conn);
297 ungrab_all_keys(conn);
304 * A new window appeared on the screen (=was mapped), so let’s manage it.
307 int handle_map_request(void *prophs, xcb_connection_t *conn, xcb_map_request_event_t *event) {
308 xcb_get_window_attributes_cookie_t cookie;
310 cookie = xcb_get_window_attributes_unchecked(conn, event->window);
312 DLOG("window = 0x%08x, serial is %d.\n", event->window, event->sequence);
313 add_ignore_event(event->sequence);
315 manage_window(prophs, conn, event->window, cookie, false);
320 * Configure requests are received when the application wants to resize windows on their own.
322 * We generate a synthethic configure notify event to signalize the client its "new" position.
325 int handle_configure_request(void *prophs, xcb_connection_t *conn, xcb_configure_request_event_t *event) {
326 DLOG("window 0x%08x wants to be at %dx%d with %dx%d\n",
327 event->window, event->x, event->y, event->width, event->height);
329 Client *client = table_get(&by_child, event->window);
330 if (client == NULL) {
334 #define COPY_MASK_MEMBER(mask_member, event_member) do { \
335 if (event->value_mask & mask_member) { \
336 mask |= mask_member; \
337 values[c++] = event->event_member; \
341 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_X, x);
342 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_Y, y);
343 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_WIDTH, width);
344 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_HEIGHT, height);
345 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_BORDER_WIDTH, border_width);
346 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_SIBLING, sibling);
347 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_STACK_MODE, stack_mode);
349 xcb_configure_window(conn, event->window, mask, values);
355 if (client->fullscreen) {
356 DLOG("Client is in fullscreen mode\n");
358 Rect child_rect = client->workspace->rect;
359 child_rect.x = child_rect.y = 0;
360 fake_configure_notify(conn, child_rect, client->child);
365 /* Floating clients can be reconfigured */
366 if (client_is_floating(client)) {
367 i3Font *font = load_font(conn, config.font);
368 int mode = (client->container != NULL ? client->container->mode : MODE_DEFAULT);
369 /* TODO: refactor this code. we need a function to translate
370 * coordinates of child_rect/rect. */
372 if (event->value_mask & XCB_CONFIG_WINDOW_X) {
373 if (mode == MODE_STACK || mode == MODE_TABBED) {
374 client->rect.x = event->x - 2;
376 if (client->titlebar_position == TITLEBAR_OFF && client->borderless)
377 client->rect.x = event->x;
378 else if (client->titlebar_position == TITLEBAR_OFF && !client->borderless)
379 client->rect.x = event->x - 1;
380 else client->rect.x = event->x - 2;
383 if (event->value_mask & XCB_CONFIG_WINDOW_Y) {
384 if (mode == MODE_STACK || mode == MODE_TABBED) {
385 client->rect.y = event->y - 2;
387 if (client->titlebar_position == TITLEBAR_OFF && client->borderless)
388 client->rect.y = event->y;
389 else if (client->titlebar_position == TITLEBAR_OFF && !client->borderless)
390 client->rect.y = event->y - 1;
391 else client->rect.y = event->y - font->height - 2 - 2;
394 if (event->value_mask & XCB_CONFIG_WINDOW_WIDTH) {
395 if (mode == MODE_STACK || mode == MODE_TABBED) {
396 client->rect.width = event->width + 2 + 2;
398 if (client->titlebar_position == TITLEBAR_OFF && client->borderless)
399 client->rect.width = event->width;
400 else if (client->titlebar_position == TITLEBAR_OFF && !client->borderless)
401 client->rect.width = event->width + (1 + 1);
402 else client->rect.width = event->width + (2 + 2);
405 if (event->value_mask & XCB_CONFIG_WINDOW_HEIGHT) {
406 if (mode == MODE_STACK || mode == MODE_TABBED) {
407 client->rect.height = event->height + 2;
409 if (client->titlebar_position == TITLEBAR_OFF && client->borderless)
410 client->rect.height = event->height;
411 else if (client->titlebar_position == TITLEBAR_OFF && !client->borderless)
412 client->rect.height = event->height + (1 + 1);
413 else client->rect.height = event->height + (font->height + 2 + 2) + 2;
417 DLOG("Accepted new position/size for floating client: (%d, %d) size %d x %d\n",
418 client->rect.x, client->rect.y, client->rect.width, client->rect.height);
420 /* Push the new position/size to X11 */
421 reposition_client(conn, client);
422 resize_client(conn, client);
428 /* Dock clients can be reconfigured in their height */
430 DLOG("Reconfiguring height of this dock client\n");
432 if (!(event->value_mask & XCB_CONFIG_WINDOW_HEIGHT)) {
433 DLOG("Ignoring configure request, no height given\n");
437 client->desired_height = event->height;
438 render_workspace(conn, c_ws->output, c_ws);
444 if (client->fullscreen) {
445 DLOG("Client is in fullscreen mode\n");
447 Rect child_rect = client->container->workspace->rect;
448 child_rect.x = child_rect.y = 0;
449 fake_configure_notify(conn, child_rect, client->child);
454 fake_absolute_configure_notify(conn, client);
460 * Configuration notifies are only handled because we need to set up ignore for
461 * the following enter notify events.
464 int handle_configure_event(void *prophs, xcb_connection_t *conn, xcb_configure_notify_event_t *event) {
465 /* We ignore this sequence twice because events for child and frame should be ignored */
466 add_ignore_event(event->sequence);
467 add_ignore_event(event->sequence);
473 * Gets triggered upon a RandR screen change event, that is when the user
474 * changes the screen configuration in any way (mode, position, …)
477 int handle_screen_change(void *prophs, xcb_connection_t *conn,
478 xcb_generic_event_t *e) {
479 DLOG("RandR screen change\n");
481 randr_query_outputs(conn);
487 * Our window decorations were unmapped. That means, the window will be killed now,
488 * so we better clean up before.
491 int handle_unmap_notify_event(void *data, xcb_connection_t *conn, xcb_unmap_notify_event_t *event) {
492 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
494 add_ignore_event(event->sequence);
496 Client *client = table_get(&by_child, event->window);
497 /* First, we need to check if the client is awaiting an unmap-request which
498 was generated by us reparenting the window. In that case, we just ignore it. */
499 if (client != NULL && client->awaiting_useless_unmap) {
500 client->awaiting_useless_unmap = false;
504 DLOG("event->window = %08x, event->event = %08x\n", event->window, event->event);
505 DLOG("UnmapNotify for 0x%08x (received from 0x%08x)\n", event->window, event->event);
506 if (client == NULL) {
507 DLOG("not a managed window. Ignoring.\n");
509 /* This was most likely the destroyed frame of a client which is
510 * currently being unmapped, so we add this sequence (again!) to
511 * the ignore list (enter_notify events will get sent for both,
512 * the child and its frame). */
513 add_ignore_event(event->sequence);
518 client = table_remove(&by_child, event->window);
520 /* If this was the fullscreen client, we need to unset it */
521 if (client->fullscreen)
522 client->workspace->fullscreen_client = NULL;
524 /* Clients without a container are either floating or dock windows */
525 if (client->container != NULL) {
526 Container *con = client->container;
528 /* Remove the client from the list of clients */
529 client_remove_from_container(conn, client, con, true);
531 /* Set focus to the last focused client in this container */
532 con->currently_focused = get_last_focused_client(conn, con, NULL);
534 /* Only if this is the active container, we need to really change focus */
535 if ((con->currently_focused != NULL) && ((con == CUR_CELL) || client->fullscreen))
536 set_focus(conn, con->currently_focused, true);
537 } else if (client_is_floating(client)) {
538 DLOG("Removing from floating clients\n");
539 TAILQ_REMOVE(&(client->workspace->floating_clients), client, floating_clients);
540 SLIST_REMOVE(&(client->workspace->focus_stack), client, Client, focus_clients);
544 DLOG("Removing from dock clients\n");
545 SLIST_REMOVE(&(client->workspace->output->dock_clients), client, Client, dock_clients);
548 DLOG("child of 0x%08x.\n", client->frame);
549 xcb_reparent_window(conn, client->child, root, 0, 0);
551 client_unmap(conn, client);
553 xcb_destroy_window(conn, client->frame);
555 table_remove(&by_parent, client->frame);
557 if (client->container != NULL) {
558 Workspace *workspace = client->container->workspace;
559 cleanup_table(conn, workspace);
560 fix_colrowspan(conn, workspace);
563 /* Let’s see how many clients there are left on the workspace to delete it if it’s empty */
564 bool workspace_empty = SLIST_EMPTY(&(client->workspace->focus_stack));
565 bool workspace_active = false;
566 Client *to_focus = (!workspace_empty ? SLIST_FIRST(&(client->workspace->focus_stack)) : NULL);
568 /* If this workspace is currently active, we don’t delete it */
570 TAILQ_FOREACH(screen, &outputs, outputs)
571 if (screen->current_workspace == client->workspace) {
572 workspace_active = true;
573 workspace_empty = false;
577 if (workspace_empty) {
578 client->workspace->output = NULL;
579 ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"empty\"}");
582 /* Remove the urgency flag if set */
583 client->urgent = false;
584 workspace_update_urgent_flag(client->workspace);
586 FREE(client->window_class_instance);
587 FREE(client->window_class_class);
593 /* Ensure the focus is set to the next client in the focus stack or to
594 * the screen itself (if we do not focus the screen, it can happen that
595 * the focus is "nowhere" and thus keypress events will not be received
596 * by i3, thus the user cannot use any hotkeys). */
597 if (workspace_active) {
598 if (to_focus != NULL)
599 set_focus(conn, to_focus, true);
601 DLOG("Restoring focus to root screen\n");
602 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, root, XCB_CURRENT_TIME);
611 * Called when a window changes its title
614 int handle_windowname_change(void *data, xcb_connection_t *conn, uint8_t state,
615 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
616 if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
617 DLOG("_NET_WM_NAME not specified, not changing\n");
620 Client *client = table_get(&by_child, window);
624 /* Save the old pointer to make the update atomic */
627 asprintf(&new_name, "%.*s", xcb_get_property_value_length(prop), (char*)xcb_get_property_value(prop));
628 /* Convert it to UCS-2 here for not having to convert it later every time we want to pass it to X */
629 char *ucs2_name = convert_utf8_to_ucs2(new_name, &new_len);
630 LOG("_NET_WM_NAME changed to \"%s\"\n", new_name);
633 /* Check if they are the same and don’t update if so.
634 Note the use of new_len * 2 to check all bytes as each glyph takes 2 bytes.
635 Also note the use of memcmp() instead of strncmp() because the latter stops on nullbytes,
636 but UCS-2 uses nullbytes to fill up glyphs which only use one byte. */
637 if ((new_len == client->name_len) &&
638 (client->name != NULL) &&
639 (memcmp(client->name, ucs2_name, new_len * 2) == 0)) {
644 char *old_name = client->name;
645 client->name = ucs2_name;
646 client->name_len = new_len;
647 client->uses_net_wm_name = true;
651 /* If the client is a dock window, we don’t need to render anything */
655 int mode = container_mode(client->container, true);
656 if (mode == MODE_STACK || mode == MODE_TABBED)
657 render_container(conn, client->container);
658 else decorate_window(conn, client, client->frame, client->titlegc, 0, 0);
665 * We handle legacy window names (titles) which are in COMPOUND_TEXT encoding. However, we
666 * just pass them along, so when containing non-ASCII characters, those will be rendering
667 * incorrectly. In order to correctly render unicode window titles in i3, an application
668 * has to set _NET_WM_NAME, which is in UTF-8 encoding.
670 * On every update, a message is put out to the user, so he may improve the situation and
671 * update applications which display filenames in their title to correctly use
672 * _NET_WM_NAME and therefore support unicode.
675 int handle_windowname_change_legacy(void *data, xcb_connection_t *conn, uint8_t state,
676 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
677 if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
678 DLOG("prop == NULL\n");
681 Client *client = table_get(&by_child, window);
685 /* Client capable of _NET_WM_NAME, ignore legacy name changes */
686 if (client->uses_net_wm_name)
689 /* Save the old pointer to make the update atomic */
691 if (asprintf(&new_name, "%.*s", xcb_get_property_value_length(prop), (char*)xcb_get_property_value(prop)) == -1) {
692 perror("Could not get old name");
693 DLOG("Could not get old name\n");
696 /* Convert it to UCS-2 here for not having to convert it later every time we want to pass it to X */
697 LOG("WM_NAME changed to \"%s\"\n", new_name);
699 /* Check if they are the same and don’t update if so. */
700 if (client->name != NULL &&
701 strlen(new_name) == strlen(client->name) &&
702 strcmp(client->name, new_name) == 0) {
707 LOG("Using legacy window title. Note that in order to get Unicode window titles in i3, "
708 "the application has to set _NET_WM_NAME which is in UTF-8 encoding.\n");
710 char *old_name = client->name;
711 client->name = new_name;
712 client->name_len = -1;
714 if (old_name != NULL)
717 /* If the client is a dock window, we don’t need to render anything */
721 if (client->container != NULL &&
722 (client->container->mode == MODE_STACK ||
723 client->container->mode == MODE_TABBED))
724 render_container(conn, client->container);
725 else decorate_window(conn, client, client->frame, client->titlegc, 0, 0);
732 * Updates the client’s WM_CLASS property
735 int handle_windowclass_change(void *data, xcb_connection_t *conn, uint8_t state,
736 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
737 if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
738 DLOG("prop == NULL\n");
741 Client *client = table_get(&by_child, window);
745 /* We cannot use asprintf here since this property contains two
746 * null-terminated strings (for compatibility reasons). Instead, we
747 * use strdup() on both strings */
748 char *new_class = xcb_get_property_value(prop);
750 FREE(client->window_class_instance);
751 FREE(client->window_class_class);
753 client->window_class_instance = strdup(new_class);
754 if ((strlen(new_class) + 1) < xcb_get_property_value_length(prop))
755 client->window_class_class = strdup(new_class + strlen(new_class) + 1);
756 else client->window_class_class = NULL;
757 LOG("WM_CLASS changed to %s (instance), %s (class)\n",
758 client->window_class_instance, client->window_class_class);
764 * Expose event means we should redraw our windows (= title bar)
767 int handle_expose_event(void *data, xcb_connection_t *conn, xcb_expose_event_t *event) {
768 /* event->count is the number of minimum remaining expose events for this window, so we
769 skip all events but the last one */
770 if (event->count != 0)
772 DLOG("window = %08x\n", event->window);
774 Client *client = table_get(&by_parent, event->window);
775 if (client == NULL) {
776 /* There was no client in the table, so this is probably an expose event for
777 one of our stack_windows. */
778 struct Stack_Window *stack_win;
779 SLIST_FOREACH(stack_win, &stack_wins, stack_windows)
780 if (stack_win->window == event->window) {
781 render_container(conn, stack_win->container);
785 /* …or one of the bars? */
787 TAILQ_FOREACH(output, &outputs, outputs)
788 if (output->bar == event->window)
796 if (container_mode(client->container, true) == MODE_DEFAULT)
797 decorate_window(conn, client, client->frame, client->titlegc, 0, 0);
799 uint32_t background_color;
801 background_color = config.client.urgent.background;
802 /* Distinguish if the window is currently focused… */
803 else if (CUR_CELL != NULL && CUR_CELL->currently_focused == client)
804 background_color = config.client.focused.background;
805 /* …or if it is the focused window in a not focused container */
806 else background_color = config.client.focused_inactive.background;
808 /* Set foreground color to current focused color, line width to 2 */
809 uint32_t values[] = {background_color, 2};
810 xcb_change_gc(conn, client->titlegc, XCB_GC_FOREGROUND | XCB_GC_LINE_WIDTH, values);
812 /* Draw the border, the ±1 is for line width = 2 */
813 xcb_point_t points[] = {{1, 0}, /* left upper edge */
814 {1, client->rect.height-1}, /* left bottom edge */
815 {client->rect.width-1, client->rect.height-1}, /* right bottom edge */
816 {client->rect.width-1, 0}}; /* right upper edge */
817 xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, client->frame, client->titlegc, 4, points);
819 /* Draw a black background */
820 xcb_change_gc_single(conn, client->titlegc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#000000"));
821 if (client->titlebar_position == TITLEBAR_OFF && !client->borderless) {
822 xcb_rectangle_t crect = {1, 0, client->rect.width - (1 + 1), client->rect.height - 1};
823 xcb_poly_fill_rectangle(conn, client->frame, client->titlegc, 1, &crect);
825 xcb_rectangle_t crect = {2, 0, client->rect.width - (2 + 2), client->rect.height - 2};
826 xcb_poly_fill_rectangle(conn, client->frame, client->titlegc, 1, &crect);
834 * Handle client messages (EWMH)
837 int handle_client_message(void *data, xcb_connection_t *conn, xcb_client_message_event_t *event) {
838 if (event->type == atoms[_NET_WM_STATE]) {
839 if (event->format != 32 || event->data.data32[1] != atoms[_NET_WM_STATE_FULLSCREEN])
842 Client *client = table_get(&by_child, event->window);
846 /* Check if the fullscreen state should be toggled */
847 if ((client->fullscreen &&
848 (event->data.data32[0] == _NET_WM_STATE_REMOVE ||
849 event->data.data32[0] == _NET_WM_STATE_TOGGLE)) ||
850 (!client->fullscreen &&
851 (event->data.data32[0] == _NET_WM_STATE_ADD ||
852 event->data.data32[0] == _NET_WM_STATE_TOGGLE)))
853 client_toggle_fullscreen(conn, client);
855 ELOG("unhandled clientmessage\n");
862 int handle_window_type(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
863 xcb_atom_t atom, xcb_get_property_reply_t *property) {
864 /* TODO: Implement this one. To do this, implement a little test program which sleep(1)s
865 before changing this property. */
866 ELOG("_NET_WM_WINDOW_TYPE changed, this is not yet implemented.\n");
871 * Handles the size hints set by a window, but currently only the part necessary for displaying
872 * clients proportionally inside their frames (mplayer for example)
874 * See ICCCM 4.1.2.3 for more details
877 int handle_normal_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
878 xcb_atom_t name, xcb_get_property_reply_t *reply) {
879 Client *client = table_get(&by_child, window);
880 if (client == NULL) {
881 DLOG("Received WM_SIZE_HINTS for unknown client\n");
884 xcb_size_hints_t size_hints;
888 /* If the hints were already in this event, use them, if not, request them */
890 xcb_get_wm_size_hints_from_reply(&size_hints, reply);
892 xcb_get_wm_normal_hints_reply(conn, xcb_get_wm_normal_hints_unchecked(conn, client->child), &size_hints, NULL);
894 if ((size_hints.flags & XCB_SIZE_HINT_P_MIN_SIZE)) {
895 // TODO: Minimum size is not yet implemented
896 DLOG("Minimum size: %d (width) x %d (height)\n", size_hints.min_width, size_hints.min_height);
899 bool changed = false;
900 if ((size_hints.flags & XCB_SIZE_HINT_P_RESIZE_INC)) {
901 if (size_hints.width_inc > 0 && size_hints.width_inc < 0xFFFF)
902 if (client->width_increment != size_hints.width_inc) {
903 client->width_increment = size_hints.width_inc;
906 if (size_hints.height_inc > 0 && size_hints.height_inc < 0xFFFF)
907 if (client->height_increment != size_hints.height_inc) {
908 client->height_increment = size_hints.height_inc;
913 DLOG("resize increments changed\n");
916 int base_width = 0, base_height = 0;
918 /* base_width/height are the desired size of the window.
919 We check if either the program-specified size or the program-specified
920 min-size is available */
921 if (size_hints.flags & XCB_SIZE_HINT_BASE_SIZE) {
922 base_width = size_hints.base_width;
923 base_height = size_hints.base_height;
924 } else if (size_hints.flags & XCB_SIZE_HINT_P_MIN_SIZE) {
925 /* TODO: is this right? icccm says not */
926 base_width = size_hints.min_width;
927 base_height = size_hints.min_height;
930 if (base_width != client->base_width ||
931 base_height != client->base_height) {
932 client->base_width = base_width;
933 client->base_height = base_height;
934 DLOG("client's base_height changed to %d\n", base_height);
935 DLOG("client's base_width changed to %d\n", base_width);
940 if (client->fullscreen)
941 DLOG("Not resizing client, it is in fullscreen mode\n");
943 resize_client(conn, client);
948 /* If no aspect ratio was set or if it was invalid, we ignore the hints */
949 if (!(size_hints.flags & XCB_SIZE_HINT_P_ASPECT) ||
950 (size_hints.min_aspect_num <= 0) ||
951 (size_hints.min_aspect_den <= 0)) {
955 double width = client->rect.width - base_width;
956 double height = client->rect.height - base_height;
957 /* Convert numerator/denominator to a double */
958 double min_aspect = (double)size_hints.min_aspect_num / size_hints.min_aspect_den;
959 double max_aspect = (double)size_hints.max_aspect_num / size_hints.min_aspect_den;
961 DLOG("Aspect ratio set: minimum %f, maximum %f\n", min_aspect, max_aspect);
962 DLOG("width = %f, height = %f\n", width, height);
964 /* Sanity checks, this is user-input, in a way */
965 if (max_aspect <= 0 || min_aspect <= 0 || height == 0 || (width / height) <= 0)
968 /* Check if we need to set proportional_* variables using the correct ratio */
969 if ((width / height) < min_aspect) {
970 client->proportional_width = width;
971 client->proportional_height = width / min_aspect;
972 } else if ((width / height) > max_aspect) {
973 client->proportional_width = width;
974 client->proportional_height = width / max_aspect;
977 client->force_reconfigure = true;
979 if (client->container != NULL) {
980 render_container(conn, client->container);
988 * Handles the WM_HINTS property for extracting the urgency state of the window.
991 int handle_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
992 xcb_atom_t name, xcb_get_property_reply_t *reply) {
993 Client *client = table_get(&by_child, window);
994 if (client == NULL) {
995 DLOG("Received WM_HINTS for unknown client\n");
998 xcb_wm_hints_t hints;
1000 if (reply != NULL) {
1001 if (!xcb_get_wm_hints_from_reply(&hints, reply))
1004 if (!xcb_get_wm_hints_reply(conn, xcb_get_wm_hints_unchecked(conn, client->child), &hints, NULL))
1008 Client *last_focused = SLIST_FIRST(&(c_ws->focus_stack));
1009 if (!client->urgent && client == last_focused) {
1010 DLOG("Ignoring urgency flag for current client\n");
1014 /* Update the flag on the client directly */
1015 client->urgent = (xcb_wm_hints_get_urgency(&hints) != 0);
1017 LOG("Urgency flag changed to %d\n", client->urgent);
1019 workspace_update_urgent_flag(client->workspace);
1020 redecorate_window(conn, client);
1022 /* If the workspace this client is on is not visible, we need to redraw
1023 * the workspace bar */
1024 if (!workspace_is_visible(client->workspace)) {
1025 Output *output = client->workspace->output;
1026 render_workspace(conn, output, output->current_workspace);
1034 * Handles the transient for hints set by a window, signalizing that this window is a popup window
1035 * for some other window.
1037 * See ICCCM 4.1.2.6 for more details
1040 int handle_transient_for(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
1041 xcb_atom_t name, xcb_get_property_reply_t *reply) {
1042 Client *client = table_get(&by_child, window);
1043 if (client == NULL) {
1044 DLOG("No such client\n");
1048 xcb_window_t transient_for;
1050 if (reply != NULL) {
1051 if (!xcb_get_wm_transient_for_from_reply(&transient_for, reply))
1054 if (!xcb_get_wm_transient_for_reply(conn, xcb_get_wm_transient_for_unchecked(conn, window),
1055 &transient_for, NULL))
1059 if (client->floating == FLOATING_AUTO_OFF) {
1060 DLOG("This is a popup window, putting into floating\n");
1061 toggle_floating_mode(conn, client, true);
1068 * Handles changes of the WM_CLIENT_LEADER atom which specifies if this is a
1069 * toolwindow (or similar) and to which window it belongs (logical parent).
1072 int handle_clientleader_change(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
1073 xcb_atom_t name, xcb_get_property_reply_t *prop) {
1075 prop = xcb_get_property_reply(conn, xcb_get_property_unchecked(conn,
1076 false, window, WM_CLIENT_LEADER, WINDOW, 0, 32), NULL);
1081 Client *client = table_get(&by_child, window);
1085 xcb_window_t *leader = xcb_get_property_value(prop);
1089 DLOG("Client leader changed to %08x\n", *leader);
1091 client->leader = *leader;