2 * vim:ts=4:sw=4:expandtab
4 * i3 - an improved dynamic tiling window manager
5 * © 2009-2011 Michael Stapelberg and contributors (see also: LICENSE)
10 #include <xcb/randr.h>
12 #include <X11/XKBlib.h>
18 /* After mapping/unmapping windows, a notify event is generated. However, we don’t want it,
19 since it’d trigger an infinite loop of switching between the different windows when
20 changing workspaces */
21 static SLIST_HEAD(ignore_head, Ignore_Event) ignore_events;
24 * Adds the given sequence to the list of events which are ignored.
25 * If this ignore should only affect a specific response_type, pass
26 * response_type, otherwise, pass -1.
28 * Every ignored sequence number gets garbage collected after 5 seconds.
31 void add_ignore_event(const int sequence, const int response_type) {
32 struct Ignore_Event *event = smalloc(sizeof(struct Ignore_Event));
34 event->sequence = sequence;
35 event->response_type = response_type;
36 event->added = time(NULL);
38 SLIST_INSERT_HEAD(&ignore_events, event, ignore_events);
42 * Checks if the given sequence is ignored and returns true if so.
45 bool event_is_ignored(const int sequence, const int response_type) {
46 struct Ignore_Event *event;
47 time_t now = time(NULL);
48 for (event = SLIST_FIRST(&ignore_events); event != SLIST_END(&ignore_events);) {
49 if ((now - event->added) > 5) {
50 struct Ignore_Event *save = event;
51 event = SLIST_NEXT(event, ignore_events);
52 SLIST_REMOVE(&ignore_events, save, Ignore_Event, ignore_events);
54 } else event = SLIST_NEXT(event, ignore_events);
57 SLIST_FOREACH(event, &ignore_events, ignore_events) {
58 if (event->sequence != sequence)
61 if (event->response_type != -1 &&
62 event->response_type != response_type)
65 /* instead of removing a sequence number we better wait until it gets
66 * garbage collected. it may generate multiple events (there are multiple
67 * enter_notifies for one configure_request, for example). */
68 //SLIST_REMOVE(&ignore_events, event, Ignore_Event, ignore_events);
78 * There was a key press. We compare this key code with our bindings table and pass
79 * the bound action to parse_command().
82 static int handle_key_press(xcb_key_press_event_t *event) {
84 last_timestamp = event->time;
86 DLOG("Keypress %d, state raw = %d\n", event->detail, event->state);
88 /* Remove the numlock bit, all other bits are modifiers we can bind to */
89 uint16_t state_filtered = event->state & ~(xcb_numlock_mask | XCB_MOD_MASK_LOCK);
90 DLOG("(removed numlock, state = %d)\n", state_filtered);
91 /* Only use the lower 8 bits of the state (modifier masks) so that mouse
92 * button masks are filtered out */
93 state_filtered &= 0xFF;
94 DLOG("(removed upper 8 bits, state = %d)\n", state_filtered);
96 if (xkb_current_group == XkbGroup2Index)
97 state_filtered |= BIND_MODE_SWITCH;
99 DLOG("(checked mode_switch, state %d)\n", state_filtered);
101 /* Find the binding */
102 Binding *bind = get_binding(state_filtered, event->detail);
104 /* No match? Then the user has Mode_switch enabled but does not have a
105 * specific keybinding. Fall back to the default keybindings (without
106 * Mode_switch). Makes it much more convenient for users of a hybrid
107 * layout (like us, ru). */
109 state_filtered &= ~(BIND_MODE_SWITCH);
110 DLOG("no match, new state_filtered = %d\n", state_filtered);
111 if ((bind = get_binding(state_filtered, event->detail)) == NULL) {
112 ELOG("Could not lookup key binding (modifiers %d, keycode %d)\n",
113 state_filtered, event->detail);
118 char *json_result = parse_cmd(bind->command);
124 * Called with coordinates of an enter_notify event or motion_notify event
125 * to check if the user crossed virtual screen boundaries and adjust the
126 * current workspace, if so.
129 static void check_crossing_screen_boundary(uint32_t x, uint32_t y) {
132 /* If the user disable focus follows mouse, we have nothing to do here */
133 if (config.disable_focus_follows_mouse)
136 if ((output = get_output_containing(x, y)) == NULL) {
137 ELOG("ERROR: No such screen\n");
141 if (output->con == NULL) {
142 ELOG("ERROR: The screen is not recognized by i3 (no container associated)\n");
146 /* Focus the output on which the user moved his cursor */
147 Con *old_focused = focused;
148 con_focus(con_descend_focused(output_get_content(output->con)));
150 /* If the focus changed, we re-render to get updated decorations */
151 if (old_focused != focused)
156 * When the user moves the mouse pointer onto a window, this callback gets called.
159 static int handle_enter_notify(xcb_enter_notify_event_t *event) {
162 last_timestamp = event->time;
164 DLOG("enter_notify for %08x, mode = %d, detail %d, serial %d\n",
165 event->event, event->mode, event->detail, event->sequence);
166 DLOG("coordinates %d, %d\n", event->event_x, event->event_y);
167 if (event->mode != XCB_NOTIFY_MODE_NORMAL) {
168 DLOG("This was not a normal notify, ignoring\n");
171 /* Some events are not interesting, because they were not generated
172 * actively by the user, but by reconfiguration of windows */
173 if (event_is_ignored(event->sequence, XCB_ENTER_NOTIFY)) {
174 DLOG("Event ignored\n");
178 bool enter_child = false;
179 /* Get container by frame or by child window */
180 if ((con = con_by_frame_id(event->event)) == NULL) {
181 con = con_by_window_id(event->event);
185 /* If not, then the user moved his cursor to the root window. In that case, we adjust c_ws */
187 DLOG("Getting screen at %d x %d\n", event->root_x, event->root_y);
188 check_crossing_screen_boundary(event->root_x, event->root_y);
192 if (con->parent->type == CT_DOCKAREA) {
193 DLOG("Ignoring, this is a dock client\n");
197 /* see if the user entered the window on a certain window decoration */
198 int layout = (enter_child ? con->parent->layout : con->layout);
199 if (layout == L_DEFAULT) {
201 TAILQ_FOREACH(child, &(con->nodes_head), nodes)
202 if (rect_contains(child->deco_rect, event->event_x, event->event_y)) {
203 LOG("using child %p / %s instead!\n", child, child->name);
210 if (client->workspace != c_ws && client->workspace->output == c_ws->output) {
211 /* This can happen when a client gets assigned to a different workspace than
212 * the current one (see src/mainx.c:reparent_window). Shortly after it was created,
213 * an enter_notify will follow. */
214 DLOG("enter_notify for a client on a different workspace but the same screen, ignoring\n");
219 if (config.disable_focus_follows_mouse)
222 con_focus(con_descend_focused(con));
229 * When the user moves the mouse but does not change the active window
230 * (e.g. when having no windows opened but moving mouse on the root screen
231 * and crossing virtual screen boundaries), this callback gets called.
234 static int handle_motion_notify(xcb_motion_notify_event_t *event) {
236 last_timestamp = event->time;
238 /* Skip events where the pointer was over a child window, we are only
239 * interested in events on the root window. */
240 if (event->child != 0)
244 if ((con = con_by_frame_id(event->event)) == NULL) {
245 check_crossing_screen_boundary(event->root_x, event->root_y);
249 if (config.disable_focus_follows_mouse)
252 if (con->layout != L_DEFAULT)
255 /* see over which rect the user is */
257 TAILQ_FOREACH(current, &(con->nodes_head), nodes) {
258 if (!rect_contains(current->deco_rect, event->event_x, event->event_y))
261 /* We found the rect, let’s see if this window is focused */
262 if (TAILQ_FIRST(&(con->focus_head)) == current)
266 x_push_changes(croot);
274 * Called when the keyboard mapping changes (for example by using Xmodmap),
275 * we need to update our key bindings then (re-translate symbols).
278 static int handle_mapping_notify(xcb_mapping_notify_event_t *event) {
279 if (event->request != XCB_MAPPING_KEYBOARD &&
280 event->request != XCB_MAPPING_MODIFIER)
283 DLOG("Received mapping_notify for keyboard or modifier mapping, re-grabbing keys\n");
284 xcb_refresh_keyboard_mapping(keysyms, event);
286 xcb_get_numlock_mask(conn);
288 ungrab_all_keys(conn);
290 grab_all_keys(conn, false);
296 * A new window appeared on the screen (=was mapped), so let’s manage it.
299 static int handle_map_request(xcb_map_request_event_t *event) {
300 xcb_get_window_attributes_cookie_t cookie;
302 cookie = xcb_get_window_attributes_unchecked(conn, event->window);
304 DLOG("window = 0x%08x, serial is %d.\n", event->window, event->sequence);
305 add_ignore_event(event->sequence, -1);
307 manage_window(event->window, cookie, false);
308 x_push_changes(croot);
313 * Configure requests are received when the application wants to resize windows on their own.
315 * We generate a synthethic configure notify event to signalize the client its "new" position.
318 static int handle_configure_request(xcb_configure_request_event_t *event) {
321 DLOG("window 0x%08x wants to be at %dx%d with %dx%d\n",
322 event->window, event->x, event->y, event->width, event->height);
324 /* For unmanaged windows, we just execute the configure request. As soon as
325 * it gets mapped, we will take over anyways. */
326 if ((con = con_by_window_id(event->window)) == NULL) {
327 DLOG("Configure request for unmanaged window, can do that.\n");
332 #define COPY_MASK_MEMBER(mask_member, event_member) do { \
333 if (event->value_mask & mask_member) { \
334 mask |= mask_member; \
335 values[c++] = event->event_member; \
339 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_X, x);
340 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_Y, y);
341 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_WIDTH, width);
342 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_HEIGHT, height);
343 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_BORDER_WIDTH, border_width);
344 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_SIBLING, sibling);
345 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_STACK_MODE, stack_mode);
347 xcb_configure_window(conn, event->window, mask, values);
353 DLOG("Configure request!\n");
354 if (con_is_floating(con) && con_is_leaf(con)) {
355 /* find the height for the decorations */
356 int deco_height = config.font.height + 5;
357 /* we actually need to apply the size/position changes to the *parent*
359 Rect bsr = con_border_style_rect(con);
360 if (con->border_style == BS_NORMAL) {
361 bsr.y += deco_height;
362 bsr.height -= deco_height;
364 Con *floatingcon = con->parent;
365 DLOG("Container is a floating leaf node, will do that.\n");
366 if (event->value_mask & XCB_CONFIG_WINDOW_X) {
367 floatingcon->rect.x = event->x + (-1) * bsr.x;
368 DLOG("proposed x = %d, new x is %d\n", event->x, floatingcon->rect.x);
370 if (event->value_mask & XCB_CONFIG_WINDOW_Y) {
371 floatingcon->rect.y = event->y + (-1) * bsr.y;
372 DLOG("proposed y = %d, new y is %d\n", event->y, floatingcon->rect.y);
374 if (event->value_mask & XCB_CONFIG_WINDOW_WIDTH) {
375 floatingcon->rect.width = event->width + (-1) * bsr.width;
376 floatingcon->rect.width += con->border_width * 2;
377 DLOG("proposed width = %d, new width is %d (x11 border %d)\n", event->width, floatingcon->rect.width, con->border_width);
379 if (event->value_mask & XCB_CONFIG_WINDOW_HEIGHT) {
380 floatingcon->rect.height = event->height + (-1) * bsr.height;
381 floatingcon->rect.height += con->border_width * 2;
382 DLOG("proposed height = %d, new height is %d (x11 border %d)\n", event->height, floatingcon->rect.height, con->border_width);
384 floating_maybe_reassign_ws(floatingcon);
388 /* Dock windows can be reconfigured in their height */
389 if (con->parent && con->parent->type == CT_DOCKAREA) {
390 DLOG("Dock window, only height reconfiguration allowed\n");
391 if (event->value_mask & XCB_CONFIG_WINDOW_HEIGHT) {
392 DLOG("Height given, changing\n");
394 con->geometry.height = event->height;
399 fake_absolute_configure_notify(con);
406 * Configuration notifies are only handled because we need to set up ignore for
407 * the following enter notify events.
410 int handle_configure_event(void *prophs, xcb_connection_t *conn, xcb_configure_notify_event_t *event) {
411 DLOG("configure_event, sequence %d\n", event->sequence);
412 /* We ignore this sequence twice because events for child and frame should be ignored */
413 add_ignore_event(event->sequence);
414 add_ignore_event(event->sequence);
421 * Gets triggered upon a RandR screen change event, that is when the user
422 * changes the screen configuration in any way (mode, position, …)
425 static int handle_screen_change(xcb_generic_event_t *e) {
426 DLOG("RandR screen change\n");
428 randr_query_outputs();
430 ipc_send_event("output", I3_IPC_EVENT_OUTPUT, "{\"change\":\"unspecified\"}");
436 * Our window decorations were unmapped. That means, the window will be killed
437 * now, so we better clean up before.
440 static int handle_unmap_notify_event(xcb_unmap_notify_event_t *event) {
441 // XXX: this is commented out because in src/x.c we disable EnterNotify events
442 /* we need to ignore EnterNotify events which will be generated because a
443 * different window is visible now */
444 //add_ignore_event(event->sequence, XCB_ENTER_NOTIFY);
446 DLOG("UnmapNotify for 0x%08x (received from 0x%08x), serial %d\n", event->window, event->event, event->sequence);
447 Con *con = con_by_window_id(event->window);
449 /* This could also be an UnmapNotify for the frame. We need to
450 * decrement the ignore_unmap counter. */
451 con = con_by_frame_id(event->window);
453 LOG("Not a managed window, ignoring UnmapNotify event\n");
456 if (con->ignore_unmap > 0)
458 DLOG("ignore_unmap = %d for frame of container %p\n", con->ignore_unmap, con);
462 if (con->ignore_unmap > 0) {
463 DLOG("ignore_unmap = %d, dec\n", con->ignore_unmap);
468 tree_close(con, DONT_KILL_WINDOW, false, false);
470 x_push_changes(croot);
474 if (client == NULL) {
475 DLOG("not a managed window. Ignoring.\n");
477 /* This was most likely the destroyed frame of a client which is
478 * currently being unmapped, so we add this sequence (again!) to
479 * the ignore list (enter_notify events will get sent for both,
480 * the child and its frame). */
481 add_ignore_event(event->sequence);
489 /* Let’s see how many clients there are left on the workspace to delete it if it’s empty */
490 bool workspace_empty = SLIST_EMPTY(&(client->workspace->focus_stack));
491 bool workspace_focused = (c_ws == client->workspace);
492 Client *to_focus = (!workspace_empty ? SLIST_FIRST(&(client->workspace->focus_stack)) : NULL);
494 /* If this workspace is currently visible, we don’t delete it */
495 if (workspace_is_visible(client->workspace))
496 workspace_empty = false;
498 if (workspace_empty) {
499 client->workspace->output = NULL;
500 ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"empty\"}");
503 /* Remove the urgency flag if set */
504 client->urgent = false;
505 workspace_update_urgent_flag(client->workspace);
514 * A destroy notify event is sent when the window is not unmapped, but
515 * immediately destroyed (for example when starting a window and immediately
516 * killing the program which started it).
518 * We just pass on the event to the unmap notify handler (by copying the
519 * important fields in the event data structure).
522 static int handle_destroy_notify_event(xcb_destroy_notify_event_t *event) {
523 DLOG("destroy notify for 0x%08x, 0x%08x\n", event->event, event->window);
525 xcb_unmap_notify_event_t unmap;
526 unmap.sequence = event->sequence;
527 unmap.event = event->event;
528 unmap.window = event->window;
530 return handle_unmap_notify_event(&unmap);
534 * Called when a window changes its title
537 static bool handle_windowname_change(void *data, xcb_connection_t *conn, uint8_t state,
538 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
540 if ((con = con_by_window_id(window)) == NULL || con->window == NULL)
543 window_update_name(con->window, prop, false);
545 x_push_changes(croot);
551 * Handles legacy window name updates (WM_NAME), see also src/window.c,
552 * window_update_name_legacy().
555 static bool handle_windowname_change_legacy(void *data, xcb_connection_t *conn, uint8_t state,
556 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
558 if ((con = con_by_window_id(window)) == NULL || con->window == NULL)
561 window_update_name_legacy(con->window, prop, false);
563 x_push_changes(croot);
569 * Called when a window changes its WM_WINDOW_ROLE.
572 static bool handle_windowrole_change(void *data, xcb_connection_t *conn, uint8_t state,
573 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
575 if ((con = con_by_window_id(window)) == NULL || con->window == NULL)
578 window_update_role(con->window, prop, false);
585 * Updates the client’s WM_CLASS property
588 static int handle_windowclass_change(void *data, xcb_connection_t *conn, uint8_t state,
589 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
591 if ((con = con_by_window_id(window)) == NULL || con->window == NULL)
594 window_update_class(con->window, prop, false);
601 * Expose event means we should redraw our windows (= title bar)
604 static int handle_expose_event(xcb_expose_event_t *event) {
607 /* event->count is the number of minimum remaining expose events for this
608 * window, so we skip all events but the last one */
609 if (event->count != 0)
612 DLOG("window = %08x\n", event->window);
614 if ((parent = con_by_frame_id(event->window)) == NULL) {
615 LOG("expose event for unknown window, ignoring\n");
619 /* re-render the parent (recursively, if it’s a split con) */
620 x_deco_recurse(parent);
627 * Handle client messages (EWMH)
630 static void handle_client_message(xcb_client_message_event_t *event) {
631 LOG("ClientMessage for window 0x%08x\n", event->window);
632 if (event->type == A__NET_WM_STATE) {
633 if (event->format != 32 || event->data.data32[1] != A__NET_WM_STATE_FULLSCREEN) {
634 DLOG("atom in clientmessage is %d, fullscreen is %d\n",
635 event->data.data32[1], A__NET_WM_STATE_FULLSCREEN);
636 DLOG("not about fullscreen atom\n");
640 Con *con = con_by_window_id(event->window);
642 DLOG("Could not get window for client message\n");
646 /* Check if the fullscreen state should be toggled */
647 if ((con->fullscreen_mode != CF_NONE &&
648 (event->data.data32[0] == _NET_WM_STATE_REMOVE ||
649 event->data.data32[0] == _NET_WM_STATE_TOGGLE)) ||
650 (con->fullscreen_mode == CF_NONE &&
651 (event->data.data32[0] == _NET_WM_STATE_ADD ||
652 event->data.data32[0] == _NET_WM_STATE_TOGGLE))) {
653 DLOG("toggling fullscreen\n");
654 con_toggle_fullscreen(con, CF_OUTPUT);
658 x_push_changes(croot);
659 } else if (event->type == A_I3_SYNC) {
660 DLOG("i3 sync, yay\n");
661 xcb_window_t window = event->data.data32[0];
662 uint32_t rnd = event->data.data32[1];
663 DLOG("Sending random value %d back to X11 window 0x%08x\n", rnd, window);
665 void *reply = scalloc(32);
666 xcb_client_message_event_t *ev = reply;
668 ev->response_type = XCB_CLIENT_MESSAGE;
670 ev->type = A_I3_SYNC;
672 ev->data.data32[0] = window;
673 ev->data.data32[1] = rnd;
675 xcb_send_event(conn, false, window, XCB_EVENT_MASK_NO_EVENT, (char*)ev);
679 ELOG("unhandled clientmessage\n");
685 int handle_window_type(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
686 xcb_atom_t atom, xcb_get_property_reply_t *property) {
687 /* TODO: Implement this one. To do this, implement a little test program which sleep(1)s
688 before changing this property. */
689 ELOG("_NET_WM_WINDOW_TYPE changed, this is not yet implemented.\n");
695 * Handles the size hints set by a window, but currently only the part necessary for displaying
696 * clients proportionally inside their frames (mplayer for example)
698 * See ICCCM 4.1.2.3 for more details
701 static bool handle_normal_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
702 xcb_atom_t name, xcb_get_property_reply_t *reply) {
703 Con *con = con_by_window_id(window);
705 DLOG("Received WM_NORMAL_HINTS for unknown client\n");
709 xcb_size_hints_t size_hints;
711 //CLIENT_LOG(client);
713 /* If the hints were already in this event, use them, if not, request them */
715 xcb_icccm_get_wm_size_hints_from_reply(&size_hints, reply);
717 xcb_icccm_get_wm_normal_hints_reply(conn, xcb_icccm_get_wm_normal_hints_unchecked(conn, con->window->id), &size_hints, NULL);
719 if ((size_hints.flags & XCB_ICCCM_SIZE_HINT_P_MIN_SIZE)) {
720 // TODO: Minimum size is not yet implemented
721 DLOG("Minimum size: %d (width) x %d (height)\n", size_hints.min_width, size_hints.min_height);
724 bool changed = false;
725 if ((size_hints.flags & XCB_ICCCM_SIZE_HINT_P_RESIZE_INC)) {
726 if (size_hints.width_inc > 0 && size_hints.width_inc < 0xFFFF)
727 if (con->width_increment != size_hints.width_inc) {
728 con->width_increment = size_hints.width_inc;
731 if (size_hints.height_inc > 0 && size_hints.height_inc < 0xFFFF)
732 if (con->height_increment != size_hints.height_inc) {
733 con->height_increment = size_hints.height_inc;
738 DLOG("resize increments changed\n");
741 int base_width = 0, base_height = 0;
743 /* base_width/height are the desired size of the window.
744 We check if either the program-specified size or the program-specified
745 min-size is available */
746 if (size_hints.flags & XCB_ICCCM_SIZE_HINT_BASE_SIZE) {
747 base_width = size_hints.base_width;
748 base_height = size_hints.base_height;
749 } else if (size_hints.flags & XCB_ICCCM_SIZE_HINT_P_MIN_SIZE) {
750 /* TODO: is this right? icccm says not */
751 base_width = size_hints.min_width;
752 base_height = size_hints.min_height;
755 if (base_width != con->base_width ||
756 base_height != con->base_height) {
757 con->base_width = base_width;
758 con->base_height = base_height;
759 DLOG("client's base_height changed to %d\n", base_height);
760 DLOG("client's base_width changed to %d\n", base_width);
764 /* If no aspect ratio was set or if it was invalid, we ignore the hints */
765 if (!(size_hints.flags & XCB_ICCCM_SIZE_HINT_P_ASPECT) ||
766 (size_hints.min_aspect_num <= 0) ||
767 (size_hints.min_aspect_den <= 0)) {
768 goto render_and_return;
771 /* XXX: do we really use rect here, not window_rect? */
772 double width = con->rect.width - base_width;
773 double height = con->rect.height - base_height;
774 /* Convert numerator/denominator to a double */
775 double min_aspect = (double)size_hints.min_aspect_num / size_hints.min_aspect_den;
776 double max_aspect = (double)size_hints.max_aspect_num / size_hints.min_aspect_den;
778 DLOG("Aspect ratio set: minimum %f, maximum %f\n", min_aspect, max_aspect);
779 DLOG("width = %f, height = %f\n", width, height);
781 /* Sanity checks, this is user-input, in a way */
782 if (max_aspect <= 0 || min_aspect <= 0 || height == 0 || (width / height) <= 0)
783 goto render_and_return;
785 /* Check if we need to set proportional_* variables using the correct ratio */
786 if ((width / height) < min_aspect) {
787 if (con->proportional_width != width ||
788 con->proportional_height != (width / min_aspect)) {
789 con->proportional_width = width;
790 con->proportional_height = width / min_aspect;
793 } else if ((width / height) > max_aspect) {
794 if (con->proportional_width != width ||
795 con->proportional_height != (width / max_aspect)) {
796 con->proportional_width = width;
797 con->proportional_height = width / max_aspect;
800 } else goto render_and_return;
810 * Handles the WM_HINTS property for extracting the urgency state of the window.
813 static bool handle_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
814 xcb_atom_t name, xcb_get_property_reply_t *reply) {
815 Con *con = con_by_window_id(window);
817 DLOG("Received WM_HINTS for unknown client\n");
821 xcb_icccm_wm_hints_t hints;
824 if (!xcb_icccm_get_wm_hints_from_reply(&hints, reply))
827 if (!xcb_icccm_get_wm_hints_reply(conn, xcb_icccm_get_wm_hints_unchecked(conn, con->window->id), &hints, NULL))
831 if (!con->urgent && focused == con) {
832 DLOG("Ignoring urgency flag for current client\n");
837 /* Update the flag on the client directly */
838 con->urgent = (xcb_icccm_wm_hints_get_urgency(&hints) != 0);
840 LOG("Urgency flag changed to %d\n", con->urgent);
843 /* Set the urgency flag on the workspace, if a workspace could be found
844 * (for dock clients, that is not the case). */
845 if ((ws = con_get_workspace(con)) != NULL)
846 workspace_update_urgent_flag(ws);
851 /* If the workspace this client is on is not visible, we need to redraw
852 * the workspace bar */
853 if (!workspace_is_visible(client->workspace)) {
854 Output *output = client->workspace->output;
855 render_workspace(conn, output, output->current_workspace);
865 * Handles the transient for hints set by a window, signalizing that this window is a popup window
866 * for some other window.
868 * See ICCCM 4.1.2.6 for more details
871 static bool handle_transient_for(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
872 xcb_atom_t name, xcb_get_property_reply_t *prop) {
875 if ((con = con_by_window_id(window)) == NULL || con->window == NULL) {
876 DLOG("No such window\n");
881 prop = xcb_get_property_reply(conn, xcb_get_property_unchecked(conn,
882 false, window, XCB_ATOM_WM_TRANSIENT_FOR, XCB_ATOM_WINDOW, 0, 32), NULL);
887 window_update_transient_for(con->window, prop);
889 // TODO: put window in floating mode if con->window->transient_for != XCB_NONE:
891 if (client->floating == FLOATING_AUTO_OFF) {
892 DLOG("This is a popup window, putting into floating\n");
893 toggle_floating_mode(conn, client, true);
901 * Handles changes of the WM_CLIENT_LEADER atom which specifies if this is a
902 * toolwindow (or similar) and to which window it belongs (logical parent).
905 static bool handle_clientleader_change(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
906 xcb_atom_t name, xcb_get_property_reply_t *prop) {
908 if ((con = con_by_window_id(window)) == NULL || con->window == NULL)
912 prop = xcb_get_property_reply(conn, xcb_get_property_unchecked(conn,
913 false, window, A_WM_CLIENT_LEADER, XCB_ATOM_WINDOW, 0, 32), NULL);
918 window_update_leader(con->window, prop);
924 * Handles FocusIn events which are generated by clients (i3’s focus changes
925 * don’t generate FocusIn events due to a different EventMask) and updates the
926 * decorations accordingly.
929 static int handle_focus_in(xcb_focus_in_event_t *event) {
930 DLOG("focus change in, for window 0x%08x\n", event->event);
932 if ((con = con_by_window_id(event->event)) == NULL || con->window == NULL)
934 DLOG("That is con %p / %s\n", con, con->name);
936 if (event->mode == XCB_NOTIFY_MODE_GRAB ||
937 event->mode == XCB_NOTIFY_MODE_UNGRAB) {
938 DLOG("FocusIn event for grab/ungrab, ignoring\n");
942 if (event->detail == XCB_NOTIFY_DETAIL_POINTER) {
943 DLOG("notify detail is pointer, ignoring this event\n");
947 if (focused_id == event->event) {
948 DLOG("focus matches the currently focused window, not doing anything\n");
952 DLOG("focus is different, updating decorations\n");
954 /* We update focused_id because we don’t need to set focus again */
955 focused_id = event->event;
956 x_push_changes(croot);
960 /* Returns false if the event could not be processed (e.g. the window could not
961 * be found), true otherwise */
962 typedef bool (*cb_property_handler_t)(void *data, xcb_connection_t *c, uint8_t state, xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *property);
964 struct property_handler_t {
967 cb_property_handler_t cb;
970 static struct property_handler_t property_handlers[] = {
971 { 0, 128, handle_windowname_change },
972 { 0, UINT_MAX, handle_hints },
973 { 0, 128, handle_windowname_change_legacy },
974 { 0, UINT_MAX, handle_normal_hints },
975 { 0, UINT_MAX, handle_clientleader_change },
976 { 0, UINT_MAX, handle_transient_for },
977 { 0, 128, handle_windowrole_change }
979 #define NUM_HANDLERS (sizeof(property_handlers) / sizeof(struct property_handler_t))
982 * Sets the appropriate atoms for the property handlers after the atoms were
986 void property_handlers_init() {
987 property_handlers[0].atom = A__NET_WM_NAME;
988 property_handlers[1].atom = XCB_ATOM_WM_HINTS;
989 property_handlers[2].atom = XCB_ATOM_WM_NAME;
990 property_handlers[3].atom = XCB_ATOM_WM_NORMAL_HINTS;
991 property_handlers[4].atom = A_WM_CLIENT_LEADER;
992 property_handlers[5].atom = XCB_ATOM_WM_TRANSIENT_FOR;
993 property_handlers[6].atom = A_WM_WINDOW_ROLE;
996 static void property_notify(uint8_t state, xcb_window_t window, xcb_atom_t atom) {
997 struct property_handler_t *handler = NULL;
998 xcb_get_property_reply_t *propr = NULL;
1000 for (int c = 0; c < sizeof(property_handlers) / sizeof(struct property_handler_t); c++) {
1001 if (property_handlers[c].atom != atom)
1004 handler = &property_handlers[c];
1008 if (handler == NULL) {
1009 DLOG("Unhandled property notify for atom %d (0x%08x)\n", atom, atom);
1013 if (state != XCB_PROPERTY_DELETE) {
1014 xcb_get_property_cookie_t cookie = xcb_get_property(conn, 0, window, atom, XCB_GET_PROPERTY_TYPE_ANY, 0, handler->long_len);
1015 propr = xcb_get_property_reply(conn, cookie, 0);
1018 /* the handler will free() the reply unless it returns false */
1019 if (!handler->cb(NULL, conn, state, window, atom, propr))
1024 * Takes an xcb_generic_event_t and calls the appropriate handler, based on the
1028 void handle_event(int type, xcb_generic_event_t *event) {
1029 if (randr_base > -1 &&
1030 type == randr_base + XCB_RANDR_SCREEN_CHANGE_NOTIFY) {
1031 handle_screen_change(event);
1037 handle_key_press((xcb_key_press_event_t*)event);
1040 case XCB_BUTTON_PRESS:
1041 handle_button_press((xcb_button_press_event_t*)event);
1044 case XCB_MAP_REQUEST:
1045 handle_map_request((xcb_map_request_event_t*)event);
1048 case XCB_UNMAP_NOTIFY:
1049 handle_unmap_notify_event((xcb_unmap_notify_event_t*)event);
1052 case XCB_DESTROY_NOTIFY:
1053 handle_destroy_notify_event((xcb_destroy_notify_event_t*)event);
1057 handle_expose_event((xcb_expose_event_t*)event);
1060 case XCB_MOTION_NOTIFY:
1061 handle_motion_notify((xcb_motion_notify_event_t*)event);
1064 /* Enter window = user moved his mouse over the window */
1065 case XCB_ENTER_NOTIFY:
1066 handle_enter_notify((xcb_enter_notify_event_t*)event);
1069 /* Client message are sent to the root window. The only interesting
1070 * client message for us is _NET_WM_STATE, we honour
1071 * _NET_WM_STATE_FULLSCREEN */
1072 case XCB_CLIENT_MESSAGE:
1073 handle_client_message((xcb_client_message_event_t*)event);
1076 /* Configure request = window tried to change size on its own */
1077 case XCB_CONFIGURE_REQUEST:
1078 handle_configure_request((xcb_configure_request_event_t*)event);
1081 /* Mapping notify = keyboard mapping changed (Xmodmap), re-grab bindings */
1082 case XCB_MAPPING_NOTIFY:
1083 handle_mapping_notify((xcb_mapping_notify_event_t*)event);
1087 handle_focus_in((xcb_focus_in_event_t*)event);
1090 case XCB_PROPERTY_NOTIFY:
1091 DLOG("Property notify\n");
1092 xcb_property_notify_event_t *e = (xcb_property_notify_event_t*)event;
1093 last_timestamp = e->time;
1094 property_notify(e->state, e->window, e->atom);
1098 DLOG("Unhandled event of type %d\n", type);