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)
10 #include <xcb/xcb_atom.h>
11 #include <xcb/randr.h>
13 #include <X11/XKBlib.h>
17 /* After mapping/unmapping windows, a notify event is generated. However, we don’t want it,
18 since it’d trigger an infinite loop of switching between the different windows when
19 changing workspaces */
20 static SLIST_HEAD(ignore_head, Ignore_Event) ignore_events;
22 static void add_ignore_event(const int sequence) {
23 struct Ignore_Event *event = smalloc(sizeof(struct Ignore_Event));
25 event->sequence = sequence;
26 event->added = time(NULL);
28 SLIST_INSERT_HEAD(&ignore_events, event, ignore_events);
32 * Checks if the given sequence is ignored and returns true if so.
35 static bool event_is_ignored(const int sequence) {
36 struct Ignore_Event *event;
37 time_t now = time(NULL);
38 for (event = SLIST_FIRST(&ignore_events); event != SLIST_END(&ignore_events);) {
39 if ((now - event->added) > 5) {
40 struct Ignore_Event *save = event;
41 event = SLIST_NEXT(event, ignore_events);
42 SLIST_REMOVE(&ignore_events, save, Ignore_Event, ignore_events);
44 } else event = SLIST_NEXT(event, ignore_events);
47 SLIST_FOREACH(event, &ignore_events, ignore_events) {
48 if (event->sequence != sequence)
51 SLIST_REMOVE(&ignore_events, event, Ignore_Event, ignore_events);
60 * There was a key press. We compare this key code with our bindings table and pass
61 * the bound action to parse_command().
64 int handle_key_press(void *ignored, xcb_connection_t *conn, xcb_key_press_event_t *event) {
65 DLOG("Keypress %d, state raw = %d\n", event->detail, event->state);
67 /* Remove the numlock bit, all other bits are modifiers we can bind to */
68 uint16_t state_filtered = event->state & ~(xcb_numlock_mask | XCB_MOD_MASK_LOCK);
69 DLOG("(removed numlock, state = %d)\n", state_filtered);
70 /* Only use the lower 8 bits of the state (modifier masks) so that mouse
71 * button masks are filtered out */
72 state_filtered &= 0xFF;
73 DLOG("(removed upper 8 bits, state = %d)\n", state_filtered);
75 if (xkb_current_group == XkbGroup2Index)
76 state_filtered |= BIND_MODE_SWITCH;
78 DLOG("(checked mode_switch, state %d)\n", state_filtered);
80 /* Find the binding */
81 Binding *bind = get_binding(state_filtered, event->detail);
83 /* No match? Then the user has Mode_switch enabled but does not have a
84 * specific keybinding. Fall back to the default keybindings (without
85 * Mode_switch). Makes it much more convenient for users of a hybrid
86 * layout (like us, ru). */
88 state_filtered &= ~(BIND_MODE_SWITCH);
89 DLOG("no match, new state_filtered = %d\n", state_filtered);
90 if ((bind = get_binding(state_filtered, event->detail)) == NULL) {
91 ELOG("Could not lookup key binding (modifiers %d, keycode %d)\n",
92 state_filtered, event->detail);
97 parse_command(bind->command);
104 * Called with coordinates of an enter_notify event or motion_notify event
105 * to check if the user crossed virtual screen boundaries and adjust the
106 * current workspace, if so.
109 static void check_crossing_screen_boundary(uint32_t x, uint32_t y) {
112 if ((output = get_output_containing(x, y)) == NULL) {
113 ELOG("ERROR: No such screen\n");
116 if (output == c_ws->output)
119 c_ws->current_row = current_row;
120 c_ws->current_col = current_col;
121 c_ws = output->current_workspace;
122 current_row = c_ws->current_row;
123 current_col = c_ws->current_col;
124 DLOG("We're now on output %p\n", output);
126 /* While usually this function is only called when the user switches
127 * to a different output using his mouse (and thus the output is
128 * empty), it may be that the following race condition occurs:
129 * 1) the user actives a new output (say VGA1).
130 * 2) the cursor is sent to the first pixel of the new VGA1, thus
131 * generating an enter_notify for the screen (the enter_notify
132 * is not yet received by i3).
133 * 3) i3 requeries screen configuration and maps a workspace onto the
135 * 4) the enter_notify event arrives and c_ws is set to the new
136 * workspace but the existing windows on the new workspace are not
139 * Therefore, we re-set the focus here to be sure it’s correct. */
140 Client *first_client = SLIST_FIRST(&(c_ws->focus_stack));
141 if (first_client != NULL)
142 set_focus(global_conn, first_client, true);
147 * When the user moves the mouse pointer onto a window, this callback gets called.
150 int handle_enter_notify(void *ignored, xcb_connection_t *conn,
151 xcb_enter_notify_event_t *event) {
154 DLOG("enter_notify for %08x, mode = %d, detail %d, serial %d\n",
155 event->event, event->mode, event->detail, event->sequence);
156 DLOG("coordinates %x, %x\n", event->event_x, event->event_y);
157 if (event->mode != XCB_NOTIFY_MODE_NORMAL) {
158 DLOG("This was not a normal notify, ignoring\n");
161 /* Some events are not interesting, because they were not generated
162 * actively by the user, but by reconfiguration of windows */
163 if (event_is_ignored(event->sequence))
166 /* Get container by frame or by child window */
167 if ((con = con_by_frame_id(event->event)) == NULL)
168 con = con_by_window_id(event->event);
170 /* If not, then the user moved his cursor to the root window. In that case, we adjust c_ws */
172 DLOG("Getting screen at %d x %d\n", event->root_x, event->root_y);
173 //check_crossing_screen_boundary(event->root_x, event->root_y);
177 /* see if the user entered the window on a certain window decoration */
178 int layout = con->layout;
180 TAILQ_FOREACH(child, &(con->nodes_head), nodes)
181 if (rect_contains(child->deco_rect, event->event_x, event->event_y)) {
182 LOG("using child %p / %s instead!\n", child, child->name);
187 /* for stacked/tabbed layout we do not want to change focus when the user
188 * enters the window at the decoration of any child window. */
189 if (layout == L_STACKED || layout == L_TABBED) {
190 con = TAILQ_FIRST(&(con->parent->focus_head));
191 LOG("using focused %p / %s instead\n", con, con->name);
195 if (client->workspace != c_ws && client->workspace->output == c_ws->output) {
196 /* This can happen when a client gets assigned to a different workspace than
197 * the current one (see src/mainx.c:reparent_window). Shortly after it was created,
198 * an enter_notify will follow. */
199 DLOG("enter_notify for a client on a different workspace but the same screen, ignoring\n");
204 if (config.disable_focus_follows_mouse)
207 while (!TAILQ_EMPTY(&(next->focus_head)))
208 next = TAILQ_FIRST(&(next->focus_head));
211 x_push_changes(croot);
218 * When the user moves the mouse but does not change the active window
219 * (e.g. when having no windows opened but moving mouse on the root screen
220 * and crossing virtual screen boundaries), this callback gets called.
223 int handle_motion_notify(void *ignored, xcb_connection_t *conn, xcb_motion_notify_event_t *event) {
224 /* Skip events where the pointer was over a child window, we are only
225 * interested in events on the root window. */
226 if (event->child != 0)
229 check_crossing_screen_boundary(event->root_x, event->root_y);
235 * Called when the keyboard mapping changes (for example by using Xmodmap),
236 * we need to update our key bindings then (re-translate symbols).
239 int handle_mapping_notify(void *ignored, xcb_connection_t *conn, xcb_mapping_notify_event_t *event) {
240 if (event->request != XCB_MAPPING_KEYBOARD &&
241 event->request != XCB_MAPPING_MODIFIER)
244 DLOG("Received mapping_notify for keyboard or modifier mapping, re-grabbing keys\n");
245 xcb_refresh_keyboard_mapping(keysyms, event);
247 xcb_get_numlock_mask(conn);
249 ungrab_all_keys(conn);
251 grab_all_keys(conn, false);
257 * A new window appeared on the screen (=was mapped), so let’s manage it.
260 int handle_map_request(void *prophs, xcb_connection_t *conn, xcb_map_request_event_t *event) {
261 xcb_get_window_attributes_cookie_t cookie;
263 cookie = xcb_get_window_attributes_unchecked(conn, event->window);
265 DLOG("window = 0x%08x, serial is %d.\n", event->window, event->sequence);
266 add_ignore_event(event->sequence);
268 manage_window(prophs, conn, event->window, cookie, false);
273 * Configure requests are received when the application wants to resize windows on their own.
275 * We generate a synthethic configure notify event to signalize the client its "new" position.
278 int handle_configure_request(void *prophs, xcb_connection_t *conn, xcb_configure_request_event_t *event) {
279 DLOG("window 0x%08x wants to be at %dx%d with %dx%d\n",
280 event->window, event->x, event->y, event->width, event->height);
282 Client *client = table_get(&by_child, event->window);
283 if (client == NULL) {
287 #define COPY_MASK_MEMBER(mask_member, event_member) do { \
288 if (event->value_mask & mask_member) { \
289 mask |= mask_member; \
290 values[c++] = event->event_member; \
294 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_X, x);
295 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_Y, y);
296 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_WIDTH, width);
297 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_HEIGHT, height);
298 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_BORDER_WIDTH, border_width);
299 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_SIBLING, sibling);
300 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_STACK_MODE, stack_mode);
302 xcb_configure_window(conn, event->window, mask, values);
308 if (client->fullscreen) {
309 DLOG("Client is in fullscreen mode\n");
311 Rect child_rect = client->workspace->rect;
312 child_rect.x = child_rect.y = 0;
313 fake_configure_notify(conn, child_rect, client->child);
318 /* Floating clients can be reconfigured */
319 if (client_is_floating(client)) {
320 i3Font *font = load_font(conn, config.font);
321 int mode = (client->container != NULL ? client->container->mode : MODE_DEFAULT);
322 /* TODO: refactor this code. we need a function to translate
323 * coordinates of child_rect/rect. */
325 if (event->value_mask & XCB_CONFIG_WINDOW_X) {
326 if (mode == MODE_STACK || mode == MODE_TABBED) {
327 client->rect.x = event->x - 2;
329 if (client->titlebar_position == TITLEBAR_OFF && client->borderless)
330 client->rect.x = event->x;
331 else if (client->titlebar_position == TITLEBAR_OFF && !client->borderless)
332 client->rect.x = event->x - 1;
333 else client->rect.x = event->x - 2;
336 if (event->value_mask & XCB_CONFIG_WINDOW_Y) {
337 if (mode == MODE_STACK || mode == MODE_TABBED) {
338 client->rect.y = event->y - 2;
340 if (client->titlebar_position == TITLEBAR_OFF && client->borderless)
341 client->rect.y = event->y;
342 else if (client->titlebar_position == TITLEBAR_OFF && !client->borderless)
343 client->rect.y = event->y - 1;
344 else client->rect.y = event->y - font->height - 2 - 2;
347 if (event->value_mask & XCB_CONFIG_WINDOW_WIDTH) {
348 if (mode == MODE_STACK || mode == MODE_TABBED) {
349 client->rect.width = event->width + 2 + 2;
351 if (client->titlebar_position == TITLEBAR_OFF && client->borderless)
352 client->rect.width = event->width;
353 else if (client->titlebar_position == TITLEBAR_OFF && !client->borderless)
354 client->rect.width = event->width + (1 + 1);
355 else client->rect.width = event->width + (2 + 2);
358 if (event->value_mask & XCB_CONFIG_WINDOW_HEIGHT) {
359 if (mode == MODE_STACK || mode == MODE_TABBED) {
360 client->rect.height = event->height + 2;
362 if (client->titlebar_position == TITLEBAR_OFF && client->borderless)
363 client->rect.height = event->height;
364 else if (client->titlebar_position == TITLEBAR_OFF && !client->borderless)
365 client->rect.height = event->height + (1 + 1);
366 else client->rect.height = event->height + (font->height + 2 + 2) + 2;
370 DLOG("Accepted new position/size for floating client: (%d, %d) size %d x %d\n",
371 client->rect.x, client->rect.y, client->rect.width, client->rect.height);
373 /* Push the new position/size to X11 */
374 reposition_client(conn, client);
375 resize_client(conn, client);
381 /* Dock clients can be reconfigured in their height */
383 DLOG("Reconfiguring height of this dock client\n");
385 if (!(event->value_mask & XCB_CONFIG_WINDOW_HEIGHT)) {
386 DLOG("Ignoring configure request, no height given\n");
390 client->desired_height = event->height;
391 render_workspace(conn, c_ws->output, c_ws);
397 if (client->fullscreen) {
398 DLOG("Client is in fullscreen mode\n");
400 Rect child_rect = client->container->workspace->rect;
401 child_rect.x = child_rect.y = 0;
402 fake_configure_notify(conn, child_rect, client->child);
407 fake_absolute_configure_notify(conn, client);
413 * Configuration notifies are only handled because we need to set up ignore for
414 * the following enter notify events.
417 int handle_configure_event(void *prophs, xcb_connection_t *conn, xcb_configure_notify_event_t *event) {
418 /* We ignore this sequence twice because events for child and frame should be ignored */
419 add_ignore_event(event->sequence);
420 add_ignore_event(event->sequence);
426 * Gets triggered upon a RandR screen change event, that is when the user
427 * changes the screen configuration in any way (mode, position, …)
430 int handle_screen_change(void *prophs, xcb_connection_t *conn,
431 xcb_generic_event_t *e) {
432 DLOG("RandR screen change\n");
434 randr_query_outputs(conn);
436 ipc_send_event("output", I3_IPC_EVENT_OUTPUT, "{\"change\":\"unspecified\"}");
442 * Our window decorations were unmapped. That means, the window will be killed now,
443 * so we better clean up before.
446 int handle_unmap_notify_event(void *data, xcb_connection_t *conn, xcb_unmap_notify_event_t *event) {
447 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
449 add_ignore_event(event->sequence);
451 Client *client = table_get(&by_child, event->window);
452 /* First, we need to check if the client is awaiting an unmap-request which
453 was generated by us reparenting the window. In that case, we just ignore it. */
454 if (client != NULL && client->awaiting_useless_unmap) {
455 client->awaiting_useless_unmap = false;
459 DLOG("event->window = %08x, event->event = %08x\n", event->window, event->event);
460 DLOG("UnmapNotify for 0x%08x (received from 0x%08x)\n", event->window, event->event);
461 if (client == NULL) {
462 DLOG("not a managed window. Ignoring.\n");
464 /* This was most likely the destroyed frame of a client which is
465 * currently being unmapped, so we add this sequence (again!) to
466 * the ignore list (enter_notify events will get sent for both,
467 * the child and its frame). */
468 add_ignore_event(event->sequence);
473 client = table_remove(&by_child, event->window);
475 /* If this was the fullscreen client, we need to unset it */
476 if (client->fullscreen)
477 client->workspace->fullscreen_client = NULL;
479 /* Clients without a container are either floating or dock windows */
480 if (client->container != NULL) {
481 Container *con = client->container;
483 /* Remove the client from the list of clients */
484 client_remove_from_container(conn, client, con, true);
486 /* Set focus to the last focused client in this container */
487 con->currently_focused = get_last_focused_client(conn, con, NULL);
489 /* Only if this is the active container, we need to really change focus */
490 if ((con->currently_focused != NULL) && ((con == CUR_CELL) || client->fullscreen))
491 set_focus(conn, con->currently_focused, true);
492 } else if (client_is_floating(client)) {
493 DLOG("Removing from floating clients\n");
494 TAILQ_REMOVE(&(client->workspace->floating_clients), client, floating_clients);
495 SLIST_REMOVE(&(client->workspace->focus_stack), client, Client, focus_clients);
499 DLOG("Removing from dock clients\n");
500 SLIST_REMOVE(&(client->workspace->output->dock_clients), client, Client, dock_clients);
503 DLOG("child of 0x%08x.\n", client->frame);
504 xcb_reparent_window(conn, client->child, root, 0, 0);
506 client_unmap(conn, client);
508 xcb_destroy_window(conn, client->frame);
510 table_remove(&by_parent, client->frame);
512 if (client->container != NULL) {
513 Workspace *workspace = client->container->workspace;
514 cleanup_table(conn, workspace);
515 fix_colrowspan(conn, workspace);
518 /* Let’s see how many clients there are left on the workspace to delete it if it’s empty */
519 bool workspace_empty = SLIST_EMPTY(&(client->workspace->focus_stack));
520 bool workspace_focused = (c_ws == client->workspace);
521 Client *to_focus = (!workspace_empty ? SLIST_FIRST(&(client->workspace->focus_stack)) : NULL);
523 /* If this workspace is currently visible, we don’t delete it */
524 if (workspace_is_visible(client->workspace))
525 workspace_empty = false;
527 if (workspace_empty) {
528 client->workspace->output = NULL;
529 ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"empty\"}");
532 /* Remove the urgency flag if set */
533 client->urgent = false;
534 workspace_update_urgent_flag(client->workspace);
536 FREE(client->window_class_instance);
537 FREE(client->window_class_class);
543 /* Ensure the focus is set to the next client in the focus stack or to
544 * the screen itself (if we do not focus the screen, it can happen that
545 * the focus is "nowhere" and thus keypress events will not be received
546 * by i3, thus the user cannot use any hotkeys). */
547 if (workspace_focused) {
548 if (to_focus != NULL)
549 set_focus(conn, to_focus, true);
551 DLOG("Restoring focus to root screen\n");
552 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, root, XCB_CURRENT_TIME);
561 * A destroy notify event is sent when the window is not unmapped, but
562 * immediately destroyed (for example when starting a window and immediately
563 * killing the program which started it).
565 * We just pass on the event to the unmap notify handler (by copying the
566 * important fields in the event data structure).
569 int handle_destroy_notify_event(void *data, xcb_connection_t *conn, xcb_destroy_notify_event_t *event) {
570 DLOG("destroy notify for 0x%08x, 0x%08x\n", event->event, event->window);
572 xcb_unmap_notify_event_t unmap;
573 unmap.sequence = event->sequence;
574 unmap.event = event->event;
575 unmap.window = event->window;
577 return handle_unmap_notify_event(NULL, conn, &unmap);
581 * Called when a window changes its title
584 int handle_windowname_change(void *data, xcb_connection_t *conn, uint8_t state,
585 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
587 if ((con = con_by_window_id(window)) == NULL || con->window == NULL)
590 window_update_name(con->window, prop);
592 x_push_changes(croot);
598 * Handles legacy window name updates (WM_NAME), see also src/window.c,
599 * window_update_name_legacy().
602 int handle_windowname_change_legacy(void *data, xcb_connection_t *conn, uint8_t state,
603 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
605 if ((con = con_by_window_id(window)) == NULL || con->window == NULL)
608 window_update_name_legacy(con->window, prop);
610 x_push_changes(croot);
616 * Updates the client’s WM_CLASS property
619 int handle_windowclass_change(void *data, xcb_connection_t *conn, uint8_t state,
620 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
622 if ((con = con_by_window_id(window)) == NULL || con->window == NULL)
625 window_update_class(con->window, prop);
632 * Expose event means we should redraw our windows (= title bar)
635 int handle_expose_event(void *data, xcb_connection_t *conn, xcb_expose_event_t *event) {
636 /* event->count is the number of minimum remaining expose events for this window, so we
637 skip all events but the last one */
638 if (event->count != 0)
640 DLOG("window = %08x\n", event->window);
642 Client *client = table_get(&by_parent, event->window);
643 if (client == NULL) {
644 /* There was no client in the table, so this is probably an expose event for
645 one of our stack_windows. */
646 struct Stack_Window *stack_win;
647 SLIST_FOREACH(stack_win, &stack_wins, stack_windows)
648 if (stack_win->window == event->window) {
649 render_container(conn, stack_win->container);
653 /* …or one of the bars? */
655 TAILQ_FOREACH(output, &outputs, outputs)
656 if (output->bar == event->window)
664 if (container_mode(client->container, true) == MODE_DEFAULT)
665 decorate_window(conn, client, client->frame, client->titlegc, 0, 0);
667 uint32_t background_color;
669 background_color = config.client.urgent.background;
670 /* Distinguish if the window is currently focused… */
671 else if (CUR_CELL != NULL && CUR_CELL->currently_focused == client)
672 background_color = config.client.focused.background;
673 /* …or if it is the focused window in a not focused container */
674 else background_color = config.client.focused_inactive.background;
676 /* Set foreground color to current focused color, line width to 2 */
677 uint32_t values[] = {background_color, 2};
678 xcb_change_gc(conn, client->titlegc, XCB_GC_FOREGROUND | XCB_GC_LINE_WIDTH, values);
680 /* Draw the border, the ±1 is for line width = 2 */
681 xcb_point_t points[] = {{1, 0}, /* left upper edge */
682 {1, client->rect.height-1}, /* left bottom edge */
683 {client->rect.width-1, client->rect.height-1}, /* right bottom edge */
684 {client->rect.width-1, 0}}; /* right upper edge */
685 xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, client->frame, client->titlegc, 4, points);
687 /* Draw a black background */
688 xcb_change_gc_single(conn, client->titlegc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#000000"));
689 if (client->titlebar_position == TITLEBAR_OFF && !client->borderless) {
690 xcb_rectangle_t crect = {1, 0, client->rect.width - (1 + 1), client->rect.height - 1};
691 xcb_poly_fill_rectangle(conn, client->frame, client->titlegc, 1, &crect);
693 xcb_rectangle_t crect = {2, 0, client->rect.width - (2 + 2), client->rect.height - 2};
694 xcb_poly_fill_rectangle(conn, client->frame, client->titlegc, 1, &crect);
702 * Handle client messages (EWMH)
705 int handle_client_message(void *data, xcb_connection_t *conn, xcb_client_message_event_t *event) {
706 if (event->type == atoms[_NET_WM_STATE]) {
707 if (event->format != 32 || event->data.data32[1] != atoms[_NET_WM_STATE_FULLSCREEN])
710 Client *client = table_get(&by_child, event->window);
714 /* Check if the fullscreen state should be toggled */
715 if ((client->fullscreen &&
716 (event->data.data32[0] == _NET_WM_STATE_REMOVE ||
717 event->data.data32[0] == _NET_WM_STATE_TOGGLE)) ||
718 (!client->fullscreen &&
719 (event->data.data32[0] == _NET_WM_STATE_ADD ||
720 event->data.data32[0] == _NET_WM_STATE_TOGGLE)))
721 client_toggle_fullscreen(conn, client);
723 ELOG("unhandled clientmessage\n");
730 int handle_window_type(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
731 xcb_atom_t atom, xcb_get_property_reply_t *property) {
732 /* TODO: Implement this one. To do this, implement a little test program which sleep(1)s
733 before changing this property. */
734 ELOG("_NET_WM_WINDOW_TYPE changed, this is not yet implemented.\n");
739 * Handles the size hints set by a window, but currently only the part necessary for displaying
740 * clients proportionally inside their frames (mplayer for example)
742 * See ICCCM 4.1.2.3 for more details
745 int handle_normal_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
746 xcb_atom_t name, xcb_get_property_reply_t *reply) {
747 Client *client = table_get(&by_child, window);
748 if (client == NULL) {
749 DLOG("Received WM_SIZE_HINTS for unknown client\n");
752 xcb_size_hints_t size_hints;
756 /* If the hints were already in this event, use them, if not, request them */
758 xcb_get_wm_size_hints_from_reply(&size_hints, reply);
760 xcb_get_wm_normal_hints_reply(conn, xcb_get_wm_normal_hints_unchecked(conn, client->child), &size_hints, NULL);
762 if ((size_hints.flags & XCB_SIZE_HINT_P_MIN_SIZE)) {
763 // TODO: Minimum size is not yet implemented
764 DLOG("Minimum size: %d (width) x %d (height)\n", size_hints.min_width, size_hints.min_height);
767 bool changed = false;
768 if ((size_hints.flags & XCB_SIZE_HINT_P_RESIZE_INC)) {
769 if (size_hints.width_inc > 0 && size_hints.width_inc < 0xFFFF)
770 if (client->width_increment != size_hints.width_inc) {
771 client->width_increment = size_hints.width_inc;
774 if (size_hints.height_inc > 0 && size_hints.height_inc < 0xFFFF)
775 if (client->height_increment != size_hints.height_inc) {
776 client->height_increment = size_hints.height_inc;
781 DLOG("resize increments changed\n");
784 int base_width = 0, base_height = 0;
786 /* base_width/height are the desired size of the window.
787 We check if either the program-specified size or the program-specified
788 min-size is available */
789 if (size_hints.flags & XCB_SIZE_HINT_BASE_SIZE) {
790 base_width = size_hints.base_width;
791 base_height = size_hints.base_height;
792 } else if (size_hints.flags & XCB_SIZE_HINT_P_MIN_SIZE) {
793 /* TODO: is this right? icccm says not */
794 base_width = size_hints.min_width;
795 base_height = size_hints.min_height;
798 if (base_width != client->base_width ||
799 base_height != client->base_height) {
800 client->base_width = base_width;
801 client->base_height = base_height;
802 DLOG("client's base_height changed to %d\n", base_height);
803 DLOG("client's base_width changed to %d\n", base_width);
808 if (client->fullscreen)
809 DLOG("Not resizing client, it is in fullscreen mode\n");
811 resize_client(conn, client);
816 /* If no aspect ratio was set or if it was invalid, we ignore the hints */
817 if (!(size_hints.flags & XCB_SIZE_HINT_P_ASPECT) ||
818 (size_hints.min_aspect_num <= 0) ||
819 (size_hints.min_aspect_den <= 0)) {
823 double width = client->rect.width - base_width;
824 double height = client->rect.height - base_height;
825 /* Convert numerator/denominator to a double */
826 double min_aspect = (double)size_hints.min_aspect_num / size_hints.min_aspect_den;
827 double max_aspect = (double)size_hints.max_aspect_num / size_hints.min_aspect_den;
829 DLOG("Aspect ratio set: minimum %f, maximum %f\n", min_aspect, max_aspect);
830 DLOG("width = %f, height = %f\n", width, height);
832 /* Sanity checks, this is user-input, in a way */
833 if (max_aspect <= 0 || min_aspect <= 0 || height == 0 || (width / height) <= 0)
836 /* Check if we need to set proportional_* variables using the correct ratio */
837 if ((width / height) < min_aspect) {
838 client->proportional_width = width;
839 client->proportional_height = width / min_aspect;
840 } else if ((width / height) > max_aspect) {
841 client->proportional_width = width;
842 client->proportional_height = width / max_aspect;
845 client->force_reconfigure = true;
847 if (client->container != NULL) {
848 render_container(conn, client->container);
856 * Handles the WM_HINTS property for extracting the urgency state of the window.
859 int handle_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
860 xcb_atom_t name, xcb_get_property_reply_t *reply) {
861 Client *client = table_get(&by_child, window);
862 if (client == NULL) {
863 DLOG("Received WM_HINTS for unknown client\n");
866 xcb_wm_hints_t hints;
869 if (!xcb_get_wm_hints_from_reply(&hints, reply))
872 if (!xcb_get_wm_hints_reply(conn, xcb_get_wm_hints_unchecked(conn, client->child), &hints, NULL))
876 Client *last_focused = SLIST_FIRST(&(c_ws->focus_stack));
877 if (!client->urgent && client == last_focused) {
878 DLOG("Ignoring urgency flag for current client\n");
882 /* Update the flag on the client directly */
883 client->urgent = (xcb_wm_hints_get_urgency(&hints) != 0);
885 LOG("Urgency flag changed to %d\n", client->urgent);
887 workspace_update_urgent_flag(client->workspace);
888 redecorate_window(conn, client);
890 /* If the workspace this client is on is not visible, we need to redraw
891 * the workspace bar */
892 if (!workspace_is_visible(client->workspace)) {
893 Output *output = client->workspace->output;
894 render_workspace(conn, output, output->current_workspace);
902 * Handles the transient for hints set by a window, signalizing that this window is a popup window
903 * for some other window.
905 * See ICCCM 4.1.2.6 for more details
908 int handle_transient_for(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
909 xcb_atom_t name, xcb_get_property_reply_t *reply) {
910 Client *client = table_get(&by_child, window);
911 if (client == NULL) {
912 DLOG("No such client\n");
916 xcb_window_t transient_for;
919 if (!xcb_get_wm_transient_for_from_reply(&transient_for, reply))
922 if (!xcb_get_wm_transient_for_reply(conn, xcb_get_wm_transient_for_unchecked(conn, window),
923 &transient_for, NULL))
927 if (client->floating == FLOATING_AUTO_OFF) {
928 DLOG("This is a popup window, putting into floating\n");
929 toggle_floating_mode(conn, client, true);
936 * Handles changes of the WM_CLIENT_LEADER atom which specifies if this is a
937 * toolwindow (or similar) and to which window it belongs (logical parent).
940 int handle_clientleader_change(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
941 xcb_atom_t name, xcb_get_property_reply_t *prop) {
943 prop = xcb_get_property_reply(conn, xcb_get_property_unchecked(conn,
944 false, window, WM_CLIENT_LEADER, WINDOW, 0, 32), NULL);
949 Client *client = table_get(&by_child, window);
953 xcb_window_t *leader = xcb_get_property_value(prop);
957 DLOG("Client leader changed to %08x\n", *leader);
959 client->leader = *leader;