2 * vim:ts=4:sw=4:expandtab
4 * i3 - an improved dynamic tiling window manager
5 * © 2009-2010 Michael Stapelberg and contributors (see also: LICENSE)
11 #include <xcb/randr.h>
13 #include <X11/XKBlib.h>
19 /* After mapping/unmapping windows, a notify event is generated. However, we don’t want it,
20 since it’d trigger an infinite loop of switching between the different windows when
21 changing workspaces */
22 static SLIST_HEAD(ignore_head, Ignore_Event) ignore_events;
24 void add_ignore_event(const int sequence) {
25 struct Ignore_Event *event = smalloc(sizeof(struct Ignore_Event));
27 event->sequence = sequence;
28 event->added = time(NULL);
30 SLIST_INSERT_HEAD(&ignore_events, event, ignore_events);
34 * Checks if the given sequence is ignored and returns true if so.
37 static bool event_is_ignored(const int sequence) {
38 struct Ignore_Event *event;
39 time_t now = time(NULL);
40 for (event = SLIST_FIRST(&ignore_events); event != SLIST_END(&ignore_events);) {
41 if ((now - event->added) > 5) {
42 struct Ignore_Event *save = event;
43 event = SLIST_NEXT(event, ignore_events);
44 SLIST_REMOVE(&ignore_events, save, Ignore_Event, ignore_events);
46 } else event = SLIST_NEXT(event, ignore_events);
49 SLIST_FOREACH(event, &ignore_events, ignore_events) {
50 if (event->sequence != sequence)
53 /* instead of removing a sequence number we better wait until it gets
54 * garbage collected. it may generate multiple events (there are multiple
55 * enter_notifies for one configure_request, for example). */
56 //SLIST_REMOVE(&ignore_events, event, Ignore_Event, ignore_events);
66 * There was a key press. We compare this key code with our bindings table and pass
67 * the bound action to parse_command().
70 static int handle_key_press(xcb_key_press_event_t *event) {
71 DLOG("Keypress %d, state raw = %d\n", event->detail, event->state);
73 /* Remove the numlock bit, all other bits are modifiers we can bind to */
74 uint16_t state_filtered = event->state & ~(xcb_numlock_mask | XCB_MOD_MASK_LOCK);
75 DLOG("(removed numlock, state = %d)\n", state_filtered);
76 /* Only use the lower 8 bits of the state (modifier masks) so that mouse
77 * button masks are filtered out */
78 state_filtered &= 0xFF;
79 DLOG("(removed upper 8 bits, state = %d)\n", state_filtered);
81 if (xkb_current_group == XkbGroup2Index)
82 state_filtered |= BIND_MODE_SWITCH;
84 DLOG("(checked mode_switch, state %d)\n", state_filtered);
86 /* Find the binding */
87 Binding *bind = get_binding(state_filtered, event->detail);
89 /* No match? Then the user has Mode_switch enabled but does not have a
90 * specific keybinding. Fall back to the default keybindings (without
91 * Mode_switch). Makes it much more convenient for users of a hybrid
92 * layout (like us, ru). */
94 state_filtered &= ~(BIND_MODE_SWITCH);
95 DLOG("no match, new state_filtered = %d\n", state_filtered);
96 if ((bind = get_binding(state_filtered, event->detail)) == NULL) {
97 ELOG("Could not lookup key binding (modifiers %d, keycode %d)\n",
98 state_filtered, event->detail);
103 parse_cmd(bind->command);
109 * Called with coordinates of an enter_notify event or motion_notify event
110 * to check if the user crossed virtual screen boundaries and adjust the
111 * current workspace, if so.
114 static void check_crossing_screen_boundary(uint32_t x, uint32_t y) {
117 /* If the user disable focus follows mouse, we have nothing to do here */
118 if (config.disable_focus_follows_mouse)
121 if ((output = get_output_containing(x, y)) == NULL) {
122 ELOG("ERROR: No such screen\n");
126 if (output->con == NULL) {
127 ELOG("ERROR: The screen is not recognized by i3 (no container associated)\n");
131 /* Focus the output on which the user moved his cursor */
132 Con *old_focused = focused;
133 con_focus(con_descend_focused(output_get_content(output->con)));
135 /* If the focus changed, we re-render to get updated decorations */
136 if (old_focused != focused)
141 * When the user moves the mouse pointer onto a window, this callback gets called.
144 static int handle_enter_notify(xcb_enter_notify_event_t *event) {
147 DLOG("enter_notify for %08x, mode = %d, detail %d, serial %d\n",
148 event->event, event->mode, event->detail, event->sequence);
149 DLOG("coordinates %d, %d\n", event->event_x, event->event_y);
150 if (event->mode != XCB_NOTIFY_MODE_NORMAL) {
151 DLOG("This was not a normal notify, ignoring\n");
154 /* Some events are not interesting, because they were not generated
155 * actively by the user, but by reconfiguration of windows */
156 if (event_is_ignored(event->sequence))
159 bool enter_child = false;
160 /* Get container by frame or by child window */
161 if ((con = con_by_frame_id(event->event)) == NULL) {
162 con = con_by_window_id(event->event);
166 /* If not, then the user moved his cursor to the root window. In that case, we adjust c_ws */
168 DLOG("Getting screen at %d x %d\n", event->root_x, event->root_y);
169 check_crossing_screen_boundary(event->root_x, event->root_y);
173 if (con->parent->type == CT_DOCKAREA) {
174 DLOG("Ignoring, this is a dock client\n");
178 /* see if the user entered the window on a certain window decoration */
179 int layout = (enter_child ? con->parent->layout : con->layout);
181 TAILQ_FOREACH(child, &(con->nodes_head), nodes)
182 if (rect_contains(child->deco_rect, event->event_x, event->event_y)) {
183 LOG("using child %p / %s instead!\n", child, child->name);
188 /* for stacked/tabbed layout we do not want to change focus when the user
189 * enters the window at the decoration of any child window. */
190 if (layout == L_STACKED || layout == L_TABBED) {
191 con = TAILQ_FIRST(&(con->parent->focus_head));
192 LOG("using focused %p / %s instead\n", con, con->name);
196 if (client->workspace != c_ws && client->workspace->output == c_ws->output) {
197 /* This can happen when a client gets assigned to a different workspace than
198 * the current one (see src/mainx.c:reparent_window). Shortly after it was created,
199 * an enter_notify will follow. */
200 DLOG("enter_notify for a client on a different workspace but the same screen, ignoring\n");
205 if (config.disable_focus_follows_mouse)
208 con_focus(con_descend_focused(con));
215 * When the user moves the mouse but does not change the active window
216 * (e.g. when having no windows opened but moving mouse on the root screen
217 * and crossing virtual screen boundaries), this callback gets called.
220 static int handle_motion_notify(xcb_motion_notify_event_t *event) {
221 /* Skip events where the pointer was over a child window, we are only
222 * interested in events on the root window. */
223 if (event->child != 0)
227 if ((con = con_by_frame_id(event->event)) == NULL) {
228 check_crossing_screen_boundary(event->root_x, event->root_y);
232 if (config.disable_focus_follows_mouse)
235 if (con->layout != L_DEFAULT)
238 /* see over which rect the user is */
240 TAILQ_FOREACH(current, &(con->nodes_head), nodes) {
241 if (!rect_contains(current->deco_rect, event->event_x, event->event_y))
244 /* We found the rect, let’s see if this window is focused */
245 if (TAILQ_FIRST(&(con->focus_head)) == current)
249 x_push_changes(croot);
257 * Called when the keyboard mapping changes (for example by using Xmodmap),
258 * we need to update our key bindings then (re-translate symbols).
261 static int handle_mapping_notify(xcb_mapping_notify_event_t *event) {
262 if (event->request != XCB_MAPPING_KEYBOARD &&
263 event->request != XCB_MAPPING_MODIFIER)
266 DLOG("Received mapping_notify for keyboard or modifier mapping, re-grabbing keys\n");
267 xcb_refresh_keyboard_mapping(keysyms, event);
269 xcb_get_numlock_mask(conn);
271 ungrab_all_keys(conn);
273 grab_all_keys(conn, false);
279 * A new window appeared on the screen (=was mapped), so let’s manage it.
282 static int handle_map_request(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 DLOG("window = 0x%08x, serial is %d.\n", event->window, event->sequence);
288 add_ignore_event(event->sequence);
290 manage_window(event->window, cookie, false);
291 x_push_changes(croot);
296 * Configure requests are received when the application wants to resize windows on their own.
298 * We generate a synthethic configure notify event to signalize the client its "new" position.
301 static int handle_configure_request(xcb_configure_request_event_t *event) {
304 DLOG("window 0x%08x wants to be at %dx%d with %dx%d\n",
305 event->window, event->x, event->y, event->width, event->height);
307 /* For unmanaged windows, we just execute the configure request. As soon as
308 * it gets mapped, we will take over anyways. */
309 if ((con = con_by_window_id(event->window)) == NULL) {
310 DLOG("Configure request for unmanaged window, can do that.\n");
315 #define COPY_MASK_MEMBER(mask_member, event_member) do { \
316 if (event->value_mask & mask_member) { \
317 mask |= mask_member; \
318 values[c++] = event->event_member; \
322 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_X, x);
323 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_Y, y);
324 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_WIDTH, width);
325 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_HEIGHT, height);
326 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_BORDER_WIDTH, border_width);
327 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_SIBLING, sibling);
328 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_STACK_MODE, stack_mode);
330 xcb_configure_window(conn, event->window, mask, values);
336 DLOG("Configure request!\n");
337 if (con_is_floating(con) && con_is_leaf(con)) {
338 /* find the height for the decorations */
339 int deco_height = config.font.height + 5;
340 /* we actually need to apply the size/position changes to the *parent*
342 Rect bsr = con_border_style_rect(con);
343 if (con->border_style == BS_NORMAL) {
344 bsr.y += deco_height;
345 bsr.height -= deco_height;
348 DLOG("Container is a floating leaf node, will do that.\n");
349 if (event->value_mask & XCB_CONFIG_WINDOW_X) {
350 con->rect.x = event->x + (-1) * bsr.x;
351 DLOG("proposed x = %d, new x is %d\n", event->x, con->rect.x);
353 if (event->value_mask & XCB_CONFIG_WINDOW_Y) {
354 con->rect.y = event->y + (-1) * bsr.y;
355 DLOG("proposed y = %d, new y is %d\n", event->y, con->rect.y);
357 if (event->value_mask & XCB_CONFIG_WINDOW_WIDTH) {
358 con->rect.width = event->width + (-1) * bsr.width;
359 DLOG("proposed width = %d, new width is %d\n", event->width, con->rect.width);
361 if (event->value_mask & XCB_CONFIG_WINDOW_HEIGHT) {
362 con->rect.height = event->height + (-1) * bsr.height;
363 DLOG("proposed height = %d, new height is %d\n", event->height, con->rect.height);
368 fake_absolute_configure_notify(con);
372 /* Dock clients can be reconfigured in their height */
374 DLOG("Reconfiguring height of this dock client\n");
376 if (!(event->value_mask & XCB_CONFIG_WINDOW_HEIGHT)) {
377 DLOG("Ignoring configure request, no height given\n");
381 client->desired_height = event->height;
382 render_workspace(conn, c_ws->output, c_ws);
388 if (client->fullscreen) {
389 DLOG("Client is in fullscreen mode\n");
391 Rect child_rect = client->container->workspace->rect;
392 child_rect.x = child_rect.y = 0;
393 fake_configure_notify(conn, child_rect, client->child);
398 fake_absolute_configure_notify(conn, client);
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) {
442 /* FIXME: we cannot ignore this sequence because more UnmapNotifys with the same sequence
443 * numbers but different window IDs may follow */
444 /* we need to ignore EnterNotify events which will be generated because a
445 * different window is visible now */
446 //add_ignore_event(event->sequence);
448 DLOG("UnmapNotify for 0x%08x (received from 0x%08x), serial %d\n", event->window, event->event, event->sequence);
449 Con *con = con_by_window_id(event->window);
451 /* This could also be an UnmapNotify for the frame. We need to
452 * decrement the ignore_unmap counter. */
453 con = con_by_frame_id(event->window);
455 LOG("Not a managed window, ignoring UnmapNotify event\n");
458 if (con->ignore_unmap > 0)
460 DLOG("ignore_unmap = %d for frame of container %p\n", con->ignore_unmap, con);
464 if (con->ignore_unmap > 0) {
465 DLOG("ignore_unmap = %d, dec\n", con->ignore_unmap);
470 tree_close(con, false, false);
472 x_push_changes(croot);
476 if (client == NULL) {
477 DLOG("not a managed window. Ignoring.\n");
479 /* This was most likely the destroyed frame of a client which is
480 * currently being unmapped, so we add this sequence (again!) to
481 * the ignore list (enter_notify events will get sent for both,
482 * the child and its frame). */
483 add_ignore_event(event->sequence);
491 /* Let’s see how many clients there are left on the workspace to delete it if it’s empty */
492 bool workspace_empty = SLIST_EMPTY(&(client->workspace->focus_stack));
493 bool workspace_focused = (c_ws == client->workspace);
494 Client *to_focus = (!workspace_empty ? SLIST_FIRST(&(client->workspace->focus_stack)) : NULL);
496 /* If this workspace is currently visible, we don’t delete it */
497 if (workspace_is_visible(client->workspace))
498 workspace_empty = false;
500 if (workspace_empty) {
501 client->workspace->output = NULL;
502 ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"empty\"}");
505 /* Remove the urgency flag if set */
506 client->urgent = false;
507 workspace_update_urgent_flag(client->workspace);
516 * A destroy notify event is sent when the window is not unmapped, but
517 * immediately destroyed (for example when starting a window and immediately
518 * killing the program which started it).
520 * We just pass on the event to the unmap notify handler (by copying the
521 * important fields in the event data structure).
524 static int handle_destroy_notify_event(xcb_destroy_notify_event_t *event) {
525 DLOG("destroy notify for 0x%08x, 0x%08x\n", event->event, event->window);
527 xcb_unmap_notify_event_t unmap;
528 unmap.sequence = event->sequence;
529 unmap.event = event->event;
530 unmap.window = event->window;
532 return handle_unmap_notify_event(&unmap);
536 * Called when a window changes its title
539 static int handle_windowname_change(void *data, xcb_connection_t *conn, uint8_t state,
540 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
542 if ((con = con_by_window_id(window)) == NULL || con->window == NULL)
545 window_update_name(con->window, prop);
547 x_push_changes(croot);
553 * Handles legacy window name updates (WM_NAME), see also src/window.c,
554 * window_update_name_legacy().
557 static int handle_windowname_change_legacy(void *data, xcb_connection_t *conn, uint8_t state,
558 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
560 if ((con = con_by_window_id(window)) == NULL || con->window == NULL)
563 window_update_name_legacy(con->window, prop);
565 x_push_changes(croot);
571 * Updates the client’s WM_CLASS property
574 static int handle_windowclass_change(void *data, xcb_connection_t *conn, uint8_t state,
575 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
577 if ((con = con_by_window_id(window)) == NULL || con->window == NULL)
580 window_update_class(con->window, prop);
586 * Expose event means we should redraw our windows (= title bar)
589 static int handle_expose_event(xcb_expose_event_t *event) {
592 /* event->count is the number of minimum remaining expose events for this
593 * window, so we skip all events but the last one */
594 if (event->count != 0)
597 DLOG("window = %08x\n", event->window);
599 if ((parent = con_by_frame_id(event->window)) == NULL) {
600 LOG("expose event for unknown window, ignoring\n");
605 x_draw_decoration(parent);
607 TAILQ_FOREACH(con, &(parent->nodes_head), nodes) {
608 DLOG("expose for con %p / %s\n", con, con->name);
610 x_draw_decoration(con);
613 /* We also need to render the decorations of other Cons nearby the Con
614 * itself to not get overlapping decorations */
615 TAILQ_FOREACH(con, &(parent->parent->nodes_head), nodes) {
616 DLOG("expose for con %p / %s\n", con, con->name);
618 x_draw_decoration(con);
626 * Handle client messages (EWMH)
629 static int handle_client_message(xcb_client_message_event_t *event) {
630 LOG("ClientMessage for window 0x%08x\n", event->window);
631 if (event->type == A__NET_WM_STATE) {
632 if (event->format != 32 || event->data.data32[1] != A__NET_WM_STATE_FULLSCREEN) {
633 DLOG("atom in clientmessage is %d, fullscreen is %d\n",
634 event->data.data32[1], A__NET_WM_STATE_FULLSCREEN);
635 DLOG("not about fullscreen atom\n");
639 Con *con = con_by_window_id(event->window);
641 DLOG("Could not get window for client message\n");
645 /* Check if the fullscreen state should be toggled */
646 if ((con->fullscreen_mode != CF_NONE &&
647 (event->data.data32[0] == _NET_WM_STATE_REMOVE ||
648 event->data.data32[0] == _NET_WM_STATE_TOGGLE)) ||
649 (con->fullscreen_mode == CF_NONE &&
650 (event->data.data32[0] == _NET_WM_STATE_ADD ||
651 event->data.data32[0] == _NET_WM_STATE_TOGGLE))) {
652 DLOG("toggling fullscreen\n");
653 con_toggle_fullscreen(con);
657 x_push_changes(croot);
659 ELOG("unhandled clientmessage\n");
667 int handle_window_type(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
668 xcb_atom_t atom, xcb_get_property_reply_t *property) {
669 /* TODO: Implement this one. To do this, implement a little test program which sleep(1)s
670 before changing this property. */
671 ELOG("_NET_WM_WINDOW_TYPE changed, this is not yet implemented.\n");
677 * Handles the size hints set by a window, but currently only the part necessary for displaying
678 * clients proportionally inside their frames (mplayer for example)
680 * See ICCCM 4.1.2.3 for more details
683 static int handle_normal_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
684 xcb_atom_t name, xcb_get_property_reply_t *reply) {
685 Con *con = con_by_window_id(window);
687 DLOG("Received WM_NORMAL_HINTS for unknown client\n");
691 xcb_size_hints_t size_hints;
693 //CLIENT_LOG(client);
695 /* If the hints were already in this event, use them, if not, request them */
697 xcb_icccm_get_wm_size_hints_from_reply(&size_hints, reply);
699 xcb_icccm_get_wm_normal_hints_reply(conn, xcb_icccm_get_wm_normal_hints_unchecked(conn, con->window->id), &size_hints, NULL);
701 if ((size_hints.flags & XCB_ICCCM_SIZE_HINT_P_MIN_SIZE)) {
702 // TODO: Minimum size is not yet implemented
703 DLOG("Minimum size: %d (width) x %d (height)\n", size_hints.min_width, size_hints.min_height);
706 bool changed = false;
707 if ((size_hints.flags & XCB_ICCCM_SIZE_HINT_P_RESIZE_INC)) {
708 if (size_hints.width_inc > 0 && size_hints.width_inc < 0xFFFF)
709 if (con->width_increment != size_hints.width_inc) {
710 con->width_increment = size_hints.width_inc;
713 if (size_hints.height_inc > 0 && size_hints.height_inc < 0xFFFF)
714 if (con->height_increment != size_hints.height_inc) {
715 con->height_increment = size_hints.height_inc;
720 DLOG("resize increments changed\n");
723 int base_width = 0, base_height = 0;
725 /* base_width/height are the desired size of the window.
726 We check if either the program-specified size or the program-specified
727 min-size is available */
728 if (size_hints.flags & XCB_ICCCM_SIZE_HINT_BASE_SIZE) {
729 base_width = size_hints.base_width;
730 base_height = size_hints.base_height;
731 } else if (size_hints.flags & XCB_ICCCM_SIZE_HINT_P_MIN_SIZE) {
732 /* TODO: is this right? icccm says not */
733 base_width = size_hints.min_width;
734 base_height = size_hints.min_height;
737 if (base_width != con->base_width ||
738 base_height != con->base_height) {
739 con->base_width = base_width;
740 con->base_height = base_height;
741 DLOG("client's base_height changed to %d\n", base_height);
742 DLOG("client's base_width changed to %d\n", base_width);
745 /* If no aspect ratio was set or if it was invalid, we ignore the hints */
746 if (!(size_hints.flags & XCB_ICCCM_SIZE_HINT_P_ASPECT) ||
747 (size_hints.min_aspect_num <= 0) ||
748 (size_hints.min_aspect_den <= 0)) {
749 goto render_and_return;
752 /* XXX: do we really use rect here, not window_rect? */
753 double width = con->rect.width - base_width;
754 double height = con->rect.height - base_height;
755 /* Convert numerator/denominator to a double */
756 double min_aspect = (double)size_hints.min_aspect_num / size_hints.min_aspect_den;
757 double max_aspect = (double)size_hints.max_aspect_num / size_hints.min_aspect_den;
759 DLOG("Aspect ratio set: minimum %f, maximum %f\n", min_aspect, max_aspect);
760 DLOG("width = %f, height = %f\n", width, height);
762 /* Sanity checks, this is user-input, in a way */
763 if (max_aspect <= 0 || min_aspect <= 0 || height == 0 || (width / height) <= 0)
764 goto render_and_return;
766 /* Check if we need to set proportional_* variables using the correct ratio */
767 if ((width / height) < min_aspect) {
768 con->proportional_width = width;
769 con->proportional_height = width / min_aspect;
770 } else if ((width / height) > max_aspect) {
771 con->proportional_width = width;
772 con->proportional_height = width / max_aspect;
773 } else goto render_and_return;
781 * Handles the WM_HINTS property for extracting the urgency state of the window.
784 static int handle_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
785 xcb_atom_t name, xcb_get_property_reply_t *reply) {
786 Con *con = con_by_window_id(window);
788 DLOG("Received WM_HINTS for unknown client\n");
792 xcb_icccm_wm_hints_t hints;
795 if (!xcb_icccm_get_wm_hints_from_reply(&hints, reply))
798 if (!xcb_icccm_get_wm_hints_reply(conn, xcb_icccm_get_wm_hints_unchecked(conn, con->window->id), &hints, NULL))
802 if (!con->urgent && focused == con) {
803 DLOG("Ignoring urgency flag for current client\n");
807 /* Update the flag on the client directly */
808 con->urgent = (xcb_icccm_wm_hints_get_urgency(&hints) != 0);
810 LOG("Urgency flag changed to %d\n", con->urgent);
812 workspace_update_urgent_flag(con_get_workspace(con));
815 /* If the workspace this client is on is not visible, we need to redraw
816 * the workspace bar */
817 if (!workspace_is_visible(client->workspace)) {
818 Output *output = client->workspace->output;
819 render_workspace(conn, output, output->current_workspace);
828 * Handles the transient for hints set by a window, signalizing that this window is a popup window
829 * for some other window.
831 * See ICCCM 4.1.2.6 for more details
834 static int handle_transient_for(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
835 xcb_atom_t name, xcb_get_property_reply_t *prop) {
838 if ((con = con_by_window_id(window)) == NULL || con->window == NULL) {
839 DLOG("No such window\n");
844 prop = xcb_get_property_reply(conn, xcb_get_property_unchecked(conn,
845 false, window, A_WM_TRANSIENT_FOR, A_WINDOW, 0, 32), NULL);
850 window_update_transient_for(con->window, prop);
852 // TODO: put window in floating mode if con->window->transient_for != XCB_NONE:
854 if (client->floating == FLOATING_AUTO_OFF) {
855 DLOG("This is a popup window, putting into floating\n");
856 toggle_floating_mode(conn, client, true);
864 * Handles changes of the WM_CLIENT_LEADER atom which specifies if this is a
865 * toolwindow (or similar) and to which window it belongs (logical parent).
868 static int handle_clientleader_change(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
869 xcb_atom_t name, xcb_get_property_reply_t *prop) {
871 if ((con = con_by_window_id(window)) == NULL || con->window == NULL)
875 prop = xcb_get_property_reply(conn, xcb_get_property_unchecked(conn,
876 false, window, A_WM_CLIENT_LEADER, A_WINDOW, 0, 32), NULL);
881 window_update_leader(con->window, prop);
887 * Handles FocusIn events which are generated by clients (i3’s focus changes
888 * don’t generate FocusIn events due to a different EventMask) and updates the
889 * decorations accordingly.
892 static int handle_focus_in(xcb_focus_in_event_t *event) {
893 DLOG("focus change in, for window 0x%08x\n", event->event);
895 if ((con = con_by_window_id(event->event)) == NULL || con->window == NULL)
897 DLOG("That is con %p / %s\n", con, con->name);
899 if (event->mode == XCB_NOTIFY_MODE_GRAB ||
900 event->mode == XCB_NOTIFY_MODE_UNGRAB) {
901 DLOG("FocusIn event for grab/ungrab, ignoring\n");
905 if (event->detail == XCB_NOTIFY_DETAIL_POINTER) {
906 DLOG("notify detail is pointer, ignoring this event\n");
910 if (focused_id == event->event) {
911 DLOG("focus matches the currently focused window, not doing anything\n");
915 DLOG("focus is different, updating decorations\n");
917 /* We update focused_id because we don’t need to set focus again */
918 focused_id = event->event;
919 x_push_changes(croot);
923 typedef int (*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);
925 struct property_handler_t {
928 cb_property_handler_t cb;
931 static struct property_handler_t property_handlers[] = {
932 { 0, 128, handle_windowname_change },
933 { 0, UINT_MAX, handle_hints },
934 { 0, 128, handle_windowname_change_legacy },
935 { 0, UINT_MAX, handle_normal_hints },
936 { 0, UINT_MAX, handle_clientleader_change },
937 { 0, UINT_MAX, handle_transient_for }
939 #define NUM_HANDLERS (sizeof(property_handlers) / sizeof(struct property_handler_t))
942 * Sets the appropriate atoms for the property handlers after the atoms were
946 void property_handlers_init() {
947 property_handlers[0].atom = A__NET_WM_NAME;
948 property_handlers[1].atom = A_WM_HINTS;
949 property_handlers[2].atom = A_WM_NAME;
950 property_handlers[3].atom = A_WM_NORMAL_HINTS;
951 property_handlers[4].atom = A_WM_CLIENT_LEADER;
952 property_handlers[5].atom = A_WM_TRANSIENT_FOR;
955 static int property_notify(uint8_t state, xcb_window_t window, xcb_atom_t atom) {
956 struct property_handler_t *handler = NULL;
957 xcb_get_property_reply_t *propr = NULL;
960 for (int c = 0; c < sizeof(property_handlers) / sizeof(struct property_handler_t); c++) {
961 if (property_handlers[c].atom != atom)
964 handler = &property_handlers[c];
968 if (handler == NULL) {
969 DLOG("Unhandled property notify for atom %d (0x%08x)\n", atom, atom);
973 if (state != XCB_PROPERTY_DELETE) {
974 xcb_get_property_cookie_t cookie = xcb_get_property(conn, 0, window, atom, XCB_GET_PROPERTY_TYPE_ANY, 0, handler->long_len);
975 propr = xcb_get_property_reply(conn, cookie, 0);
978 ret = handler->cb(NULL, conn, state, window, atom, propr);
984 * Takes an xcb_generic_event_t and calls the appropriate handler, based on the
988 void handle_event(int type, xcb_generic_event_t *event) {
989 if (randr_base > -1 &&
990 type == randr_base + XCB_RANDR_SCREEN_CHANGE_NOTIFY) {
991 handle_screen_change(event);
997 handle_key_press((xcb_key_press_event_t*)event);
1000 case XCB_BUTTON_PRESS:
1001 handle_button_press((xcb_button_press_event_t*)event);
1004 case XCB_MAP_REQUEST:
1005 handle_map_request((xcb_map_request_event_t*)event);
1008 case XCB_UNMAP_NOTIFY:
1009 handle_unmap_notify_event((xcb_unmap_notify_event_t*)event);
1012 case XCB_DESTROY_NOTIFY:
1013 handle_destroy_notify_event((xcb_destroy_notify_event_t*)event);
1017 handle_expose_event((xcb_expose_event_t*)event);
1020 case XCB_MOTION_NOTIFY:
1021 handle_motion_notify((xcb_motion_notify_event_t*)event);
1024 /* Enter window = user moved his mouse over the window */
1025 case XCB_ENTER_NOTIFY:
1026 handle_enter_notify((xcb_enter_notify_event_t*)event);
1029 /* Client message are sent to the root window. The only interesting
1030 * client message for us is _NET_WM_STATE, we honour
1031 * _NET_WM_STATE_FULLSCREEN */
1032 case XCB_CLIENT_MESSAGE:
1033 handle_client_message((xcb_client_message_event_t*)event);
1036 /* Configure request = window tried to change size on its own */
1037 case XCB_CONFIGURE_REQUEST:
1038 handle_configure_request((xcb_configure_request_event_t*)event);
1041 /* Mapping notify = keyboard mapping changed (Xmodmap), re-grab bindings */
1042 case XCB_MAPPING_NOTIFY:
1043 handle_mapping_notify((xcb_mapping_notify_event_t*)event);
1047 handle_focus_in((xcb_focus_in_event_t*)event);
1050 case XCB_PROPERTY_NOTIFY:
1051 DLOG("Property notify\n");
1052 xcb_property_notify_event_t *e = (xcb_property_notify_event_t*)event;
1053 property_notify(e->state, e->window, e->atom);
1057 DLOG("Unhandled event of type %d\n", type);