4 * i3 - an improved dynamic tiling window manager
6 * © 2009 Michael Stapelberg and contributors
8 * See file LICENSE for license information.
18 #include <xcb/xcb_atom.h>
19 #include <xcb/xcb_icccm.h>
21 #include <X11/XKBlib.h>
38 #include "workspace.h"
40 /* After mapping/unmapping windows, a notify event is generated. However, we don’t want it,
41 since it’d trigger an infinite loop of switching between the different windows when
42 changing workspaces */
43 static SLIST_HEAD(ignore_head, Ignore_Event) ignore_events;
45 static void add_ignore_event(const int sequence) {
46 struct Ignore_Event *event = smalloc(sizeof(struct Ignore_Event));
48 event->sequence = sequence;
49 event->added = time(NULL);
51 SLIST_INSERT_HEAD(&ignore_events, event, ignore_events);
55 * Checks if the given sequence is ignored and returns true if so.
58 static bool event_is_ignored(const int sequence) {
59 struct Ignore_Event *event;
60 time_t now = time(NULL);
61 for (event = SLIST_FIRST(&ignore_events); event != SLIST_END(&ignore_events);) {
62 if ((now - event->added) > 5) {
63 struct Ignore_Event *save = event;
64 event = SLIST_NEXT(event, ignore_events);
65 SLIST_REMOVE(&ignore_events, save, Ignore_Event, ignore_events);
67 } else event = SLIST_NEXT(event, ignore_events);
70 SLIST_FOREACH(event, &ignore_events, ignore_events) {
71 if (event->sequence == sequence) {
72 SLIST_REMOVE(&ignore_events, event, Ignore_Event, ignore_events);
82 * Due to bindings like Mode_switch + <a>, we need to bind some keys in XCB_GRAB_MODE_SYNC.
83 * Therefore, we just replay all key presses.
86 int handle_key_release(void *ignored, xcb_connection_t *conn, xcb_key_release_event_t *event) {
87 xcb_allow_events(conn, XCB_ALLOW_REPLAY_KEYBOARD, event->time);
93 * There was a key press. We compare this key code with our bindings table and pass
94 * the bound action to parse_command().
97 int handle_key_press(void *ignored, xcb_connection_t *conn, xcb_key_press_event_t *event) {
98 LOG("Keypress %d, state raw = %d\n", event->detail, event->state);
100 /* Remove the numlock bit, all other bits are modifiers we can bind to */
101 uint16_t state_filtered = event->state & ~(xcb_numlock_mask | XCB_MOD_MASK_LOCK);
102 LOG("(removed numlock, state = %d)\n", state_filtered);
103 /* Only use the lower 8 bits of the state (modifier masks) so that mouse
104 * button masks are filtered out */
105 state_filtered &= 0xFF;
106 LOG("(removed upper 8 bits, state = %d)\n", state_filtered);
108 /* We need to get the keysym group (There are group 1 to group 4, each holding
109 two keysyms (without shift and with shift) using Xkb because X fails to
110 provide them reliably (it works in Xephyr, it does not in real X) */
112 if (XkbGetState(xkbdpy, XkbUseCoreKbd, &state) == Success && (state.group+1) == 2)
113 state_filtered |= BIND_MODE_SWITCH;
115 LOG("(checked mode_switch, state %d)\n", state_filtered);
117 /* Find the binding */
119 TAILQ_FOREACH(bind, bindings, bindings) {
120 /* First compare the modifiers */
121 if (bind->mods != state_filtered)
124 /* If a symbol was specified by the user, we need to look in
125 * the array of translated keycodes for the event’s keycode */
126 if (bind->symbol != NULL) {
127 if (memmem(bind->translated_to,
128 bind->number_keycodes * sizeof(xcb_keycode_t),
129 &(event->detail), sizeof(xcb_keycode_t)) != NULL)
132 /* This case is easier: The user specified a keycode */
133 if (bind->keycode == event->detail)
138 /* No match? Then it was an actively grabbed key, that is with Mode_switch, and
139 the user did not press Mode_switch, so just pass it… */
140 if (bind == TAILQ_END(bindings)) {
141 xcb_allow_events(conn, ReplayKeyboard, event->time);
146 parse_command(conn, bind->command);
147 if (state_filtered & BIND_MODE_SWITCH) {
148 LOG("Mode_switch -> allow_events(SyncKeyboard)\n");
149 xcb_allow_events(conn, SyncKeyboard, event->time);
156 * Called with coordinates of an enter_notify event or motion_notify event
157 * to check if the user crossed virtual screen boundaries and adjust the
158 * current workspace, if so.
161 static void check_crossing_screen_boundary(uint32_t x, uint32_t y) {
164 if ((screen = get_screen_containing(x, y)) == NULL) {
165 LOG("ERROR: No such screen\n");
168 if (screen == c_ws->screen)
171 c_ws->current_row = current_row;
172 c_ws->current_col = current_col;
173 c_ws = screen->current_workspace;
174 current_row = c_ws->current_row;
175 current_col = c_ws->current_col;
176 LOG("We're now on virtual screen number %d\n", screen->num);
180 * When the user moves the mouse pointer onto a window, this callback gets called.
183 int handle_enter_notify(void *ignored, xcb_connection_t *conn, xcb_enter_notify_event_t *event) {
184 LOG("enter_notify for %08x, mode = %d, detail %d, serial %d\n", event->event, event->mode, event->detail, event->sequence);
185 if (event->mode != XCB_NOTIFY_MODE_NORMAL) {
186 LOG("This was not a normal notify, ignoring\n");
189 /* Some events are not interesting, because they were not generated actively by the
190 user, but by reconfiguration of windows */
191 if (event_is_ignored(event->sequence))
194 /* This was either a focus for a client’s parent (= titlebar)… */
195 Client *client = table_get(&by_parent, event->event);
196 /* …or the client itself */
198 client = table_get(&by_child, event->event);
200 /* Check for stack windows */
201 if (client == NULL) {
202 struct Stack_Window *stack_win;
203 SLIST_FOREACH(stack_win, &stack_wins, stack_windows)
204 if (stack_win->window == event->event) {
205 client = stack_win->container->currently_focused;
211 /* If not, then the user moved his cursor to the root window. In that case, we adjust c_ws */
212 if (client == NULL) {
213 LOG("Getting screen at %d x %d\n", event->root_x, event->root_y);
214 check_crossing_screen_boundary(event->root_x, event->root_y);
218 /* Do plausibility checks: This event may be useless for us if it occurs on a window
219 which is in a stacked container but not the focused one */
220 if (client->container != NULL &&
221 client->container->mode == MODE_STACK &&
222 client->container->currently_focused != client) {
223 LOG("Plausibility check says: no\n");
227 if (client->workspace != c_ws && client->workspace->screen == c_ws->screen) {
228 /* This can happen when a client gets assigned to a different workspace than
229 * the current one (see src/mainx.c:reparent_window). Shortly after it was created,
230 * an enter_notify will follow. */
231 LOG("enter_notify for a client on a different workspace but the same screen, ignoring\n");
235 set_focus(conn, client, false);
241 * When the user moves the mouse but does not change the active window
242 * (e.g. when having no windows opened but moving mouse on the root screen
243 * and crossing virtual screen boundaries), this callback gets called.
246 int handle_motion_notify(void *ignored, xcb_connection_t *conn, xcb_motion_notify_event_t *event) {
247 /* Skip events where the pointer was over a child window, we are only
248 * interested in events on the root window. */
249 if (event->child != 0)
252 check_crossing_screen_boundary(event->root_x, event->root_y);
258 * Called when the keyboard mapping changes (for example by using Xmodmap),
259 * we need to update our key bindings then (re-translate symbols).
262 int handle_mapping_notify(void *ignored, xcb_connection_t *conn, xcb_mapping_notify_event_t *event) {
263 if (event->request != XCB_MAPPING_KEYBOARD &&
264 event->request != XCB_MAPPING_MODIFIER)
267 LOG("Received mapping_notify for keyboard or modifier mapping, re-grabbing keys\n");
268 xcb_refresh_keyboard_mapping(keysyms, event);
270 xcb_get_numlock_mask(conn);
272 ungrab_all_keys(conn);
279 * A new window appeared on the screen (=was mapped), so let’s manage it.
282 int handle_map_request(void *prophs, xcb_connection_t *conn, xcb_map_request_event_t *event) {
283 xcb_get_window_attributes_cookie_t cookie;
285 cookie = xcb_get_window_attributes_unchecked(conn, event->window);
287 LOG("window = 0x%08x, serial is %d.\n", event->window, event->sequence);
288 add_ignore_event(event->sequence);
290 manage_window(prophs, conn, event->window, cookie, false);
295 * Configure requests are received when the application wants to resize windows on their own.
297 * We generate a synthethic configure notify event to signalize the client its "new" position.
300 int handle_configure_request(void *prophs, xcb_connection_t *conn, xcb_configure_request_event_t *event) {
301 LOG("window 0x%08x wants to be at %dx%d with %dx%d\n",
302 event->window, event->x, event->y, event->width, event->height);
304 Client *client = table_get(&by_child, event->window);
305 if (client == NULL) {
309 #define COPY_MASK_MEMBER(mask_member, event_member) do { \
310 if (event->value_mask & mask_member) { \
311 mask |= mask_member; \
312 values[c++] = event->event_member; \
316 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_X, x);
317 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_Y, y);
318 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_WIDTH, width);
319 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_HEIGHT, height);
320 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_BORDER_WIDTH, border_width);
321 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_SIBLING, sibling);
322 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_STACK_MODE, stack_mode);
324 xcb_configure_window(conn, event->window, mask, values);
330 if (client->fullscreen) {
331 LOG("Client is in fullscreen mode\n");
333 Rect child_rect = client->workspace->rect;
334 child_rect.x = child_rect.y = 0;
335 fake_configure_notify(conn, child_rect, client->child);
340 /* Floating clients can be reconfigured */
341 if (client_is_floating(client)) {
342 i3Font *font = load_font(conn, config.font);
344 if (event->value_mask & XCB_CONFIG_WINDOW_X)
345 client->rect.x = event->x;
346 if (event->value_mask & XCB_CONFIG_WINDOW_Y)
347 client->rect.y = event->y;
348 if (event->value_mask & XCB_CONFIG_WINDOW_WIDTH)
349 client->rect.width = event->width + 2 + 2;
350 if (event->value_mask & XCB_CONFIG_WINDOW_HEIGHT)
351 client->rect.height = event->height + (font->height + 2 + 2) + 2;
353 LOG("Accepted new position/size for floating client: (%d, %d) size %d x %d\n",
354 client->rect.x, client->rect.y, client->rect.width, client->rect.height);
356 /* Push the new position/size to X11 */
357 reposition_client(conn, client);
358 resize_client(conn, client);
364 if (client->fullscreen) {
365 LOG("Client is in fullscreen mode\n");
367 Rect child_rect = client->container->workspace->rect;
368 child_rect.x = child_rect.y = 0;
369 fake_configure_notify(conn, child_rect, client->child);
374 fake_absolute_configure_notify(conn, client);
380 * Configuration notifies are only handled because we need to set up ignore for the following
381 * enter notify events
384 int handle_configure_event(void *prophs, xcb_connection_t *conn, xcb_configure_notify_event_t *event) {
385 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
387 /* We ignore this sequence twice because events for child and frame should be ignored */
388 add_ignore_event(event->sequence);
389 add_ignore_event(event->sequence);
391 if (event->event == root) {
392 LOG("event->x = %d, ->y = %d, ->width = %d, ->height = %d\n", event->x, event->y, event->width, event->height);
393 LOG("reconfigure of the root window, need to xinerama\n");
394 /* FIXME: Somehow, this is occuring too often. Therefore, we check for 0/0,
395 but is there a better way? */
396 if (event->x == 0 && event->y == 0)
397 xinerama_requery_screens(conn);
405 * Our window decorations were unmapped. That means, the window will be killed now,
406 * so we better clean up before.
409 int handle_unmap_notify_event(void *data, xcb_connection_t *conn, xcb_unmap_notify_event_t *event) {
410 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
412 add_ignore_event(event->sequence);
414 Client *client = table_get(&by_child, event->window);
415 /* First, we need to check if the client is awaiting an unmap-request which
416 was generated by us reparenting the window. In that case, we just ignore it. */
417 if (client != NULL && client->awaiting_useless_unmap) {
418 client->awaiting_useless_unmap = false;
422 LOG("event->window = %08x, event->event = %08x\n", event->window, event->event);
423 LOG("UnmapNotify for 0x%08x (received from 0x%08x)\n", event->window, event->event);
424 if (client == NULL) {
425 LOG("not a managed window. Ignoring.\n");
427 /* This was most likely the destroyed frame of a client which is
428 * currently being unmapped, so we add this sequence (again!) to
429 * the ignore list (enter_notify events will get sent for both,
430 * the child and its frame). */
431 add_ignore_event(event->sequence);
436 client = table_remove(&by_child, event->window);
438 /* If this was the fullscreen client, we need to unset it */
439 if (client->fullscreen)
440 client->workspace->fullscreen_client = NULL;
442 /* Clients without a container are either floating or dock windows */
443 if (client->container != NULL) {
444 Container *con = client->container;
446 /* Remove the client from the list of clients */
447 client_remove_from_container(conn, client, con, true);
449 /* Set focus to the last focused client in this container */
450 con->currently_focused = get_last_focused_client(conn, con, NULL);
452 /* Only if this is the active container, we need to really change focus */
453 if ((con->currently_focused != NULL) && ((con == CUR_CELL) || client->fullscreen))
454 set_focus(conn, con->currently_focused, true);
455 } else if (client_is_floating(client)) {
456 LOG("Removing from floating clients\n");
457 TAILQ_REMOVE(&(client->workspace->floating_clients), client, floating_clients);
458 SLIST_REMOVE(&(client->workspace->focus_stack), client, Client, focus_clients);
462 LOG("Removing from dock clients\n");
463 SLIST_REMOVE(&(client->workspace->screen->dock_clients), client, Client, dock_clients);
466 LOG("child of 0x%08x.\n", client->frame);
467 xcb_reparent_window(conn, client->child, root, 0, 0);
469 client_unmap(conn, client);
471 xcb_destroy_window(conn, client->frame);
473 table_remove(&by_parent, client->frame);
475 if (client->container != NULL) {
476 Workspace *workspace = client->container->workspace;
477 cleanup_table(conn, workspace);
478 fix_colrowspan(conn, workspace);
481 /* Let’s see how many clients there are left on the workspace to delete it if it’s empty */
482 bool workspace_empty = SLIST_EMPTY(&(client->workspace->focus_stack));
483 bool workspace_active = false;
484 Client *to_focus = (!workspace_empty ? SLIST_FIRST(&(client->workspace->focus_stack)) : NULL);
486 /* If this workspace is currently active, we don’t delete it */
488 TAILQ_FOREACH(screen, virtual_screens, screens)
489 if (screen->current_workspace == client->workspace) {
490 workspace_active = true;
491 workspace_empty = false;
496 client->workspace->screen = NULL;
498 FREE(client->window_class);
504 /* Ensure the focus is set to the next client in the focus stack or to
505 * the screen itself (if we do not focus the screen, it can happen that
506 * the focus is "nowhere" and thus keypress events will not be received
507 * by i3, thus the user cannot use any hotkeys). */
508 if (workspace_active) {
509 if (to_focus != NULL)
510 set_focus(conn, to_focus, true);
512 LOG("Restoring focus to root screen\n");
513 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, root, XCB_CURRENT_TIME);
522 * Called when a window changes its title
525 int handle_windowname_change(void *data, xcb_connection_t *conn, uint8_t state,
526 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
527 if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
528 LOG("_NET_WM_NAME not specified, not changing\n");
531 Client *client = table_get(&by_child, window);
535 /* Save the old pointer to make the update atomic */
538 asprintf(&new_name, "%.*s", xcb_get_property_value_length(prop), (char*)xcb_get_property_value(prop));
539 /* Convert it to UCS-2 here for not having to convert it later every time we want to pass it to X */
540 char *ucs2_name = convert_utf8_to_ucs2(new_name, &new_len);
541 LOG("_NET_WM_NAME changed to \"%s\"\n", new_name);
544 /* Check if they are the same and don’t update if so.
545 Note the use of new_len * 2 to check all bytes as each glyph takes 2 bytes.
546 Also note the use of memcmp() instead of strncmp() because the latter stops on nullbytes,
547 but UCS-2 uses nullbytes to fill up glyphs which only use one byte. */
548 if ((new_len == client->name_len) &&
549 (client->name != NULL) &&
550 (memcmp(client->name, ucs2_name, new_len * 2) == 0)) {
555 char *old_name = client->name;
556 client->name = ucs2_name;
557 client->name_len = new_len;
558 client->uses_net_wm_name = true;
562 /* If the client is a dock window, we don’t need to render anything */
566 if (client->container != NULL &&
567 (client->container->mode == MODE_STACK ||
568 client->container->mode == MODE_TABBED))
569 render_container(conn, client->container);
570 else decorate_window(conn, client, client->frame, client->titlegc, 0, 0);
577 * We handle legacy window names (titles) which are in COMPOUND_TEXT encoding. However, we
578 * just pass them along, so when containing non-ASCII characters, those will be rendering
579 * incorrectly. In order to correctly render unicode window titles in i3, an application
580 * has to set _NET_WM_NAME, which is in UTF-8 encoding.
582 * On every update, a message is put out to the user, so he may improve the situation and
583 * update applications which display filenames in their title to correctly use
584 * _NET_WM_NAME and therefore support unicode.
587 int handle_windowname_change_legacy(void *data, xcb_connection_t *conn, uint8_t state,
588 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
589 if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
590 LOG("prop == NULL\n");
593 Client *client = table_get(&by_child, window);
597 /* Client capable of _NET_WM_NAME, ignore legacy name changes */
598 if (client->uses_net_wm_name)
601 /* Save the old pointer to make the update atomic */
603 if (asprintf(&new_name, "%.*s", xcb_get_property_value_length(prop), (char*)xcb_get_property_value(prop)) == -1) {
604 perror("Could not get old name");
605 LOG("Could not get old name\n");
608 /* Convert it to UCS-2 here for not having to convert it later every time we want to pass it to X */
609 LOG("WM_NAME changed to \"%s\"\n", new_name);
611 /* Check if they are the same and don’t update if so. */
612 if (client->name != NULL &&
613 strlen(new_name) == strlen(client->name) &&
614 strcmp(client->name, new_name) == 0) {
619 LOG("Using legacy window title. Note that in order to get Unicode window titles in i3, "
620 "the application has to set _NET_WM_NAME which is in UTF-8 encoding.\n");
622 char *old_name = client->name;
623 client->name = new_name;
624 client->name_len = -1;
626 if (old_name != NULL)
629 /* If the client is a dock window, we don’t need to render anything */
633 if (client->container != NULL &&
634 (client->container->mode == MODE_STACK ||
635 client->container->mode == MODE_TABBED))
636 render_container(conn, client->container);
637 else decorate_window(conn, client, client->frame, client->titlegc, 0, 0);
644 * Updates the client’s WM_CLASS property
647 int handle_windowclass_change(void *data, xcb_connection_t *conn, uint8_t state,
648 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
649 if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
650 LOG("prop == NULL\n");
653 Client *client = table_get(&by_child, window);
657 if (asprintf(&new_class, "%.*s", xcb_get_property_value_length(prop), (char*)xcb_get_property_value(prop)) == -1) {
658 perror("Could not get window class");
659 LOG("Could not get window class\n");
663 LOG("WM_CLASS changed to %s\n", new_class);
664 char *old_class = client->window_class;
665 client->window_class = new_class;
668 if (!client->initialized)
671 if (strcmp(new_class, "tools") == 0 || strcmp(new_class, "Dialog") == 0) {
672 LOG("tool/dialog window, should we put it floating?\n");
673 if (client->floating == FLOATING_AUTO_OFF)
674 toggle_floating_mode(conn, client, true);
681 * Expose event means we should redraw our windows (= title bar)
684 int handle_expose_event(void *data, xcb_connection_t *conn, xcb_expose_event_t *event) {
685 /* event->count is the number of minimum remaining expose events for this window, so we
686 skip all events but the last one */
687 if (event->count != 0)
689 LOG("window = %08x\n", event->window);
691 Client *client = table_get(&by_parent, event->window);
692 if (client == NULL) {
693 /* There was no client in the table, so this is probably an expose event for
694 one of our stack_windows. */
695 struct Stack_Window *stack_win;
696 SLIST_FOREACH(stack_win, &stack_wins, stack_windows)
697 if (stack_win->window == event->window) {
698 render_container(conn, stack_win->container);
702 /* …or one of the bars? */
704 TAILQ_FOREACH(screen, virtual_screens, screens)
705 if (screen->bar == event->window)
713 if (client->container == NULL ||
714 (client->container->mode != MODE_STACK &&
715 client->container->mode != MODE_TABBED))
716 decorate_window(conn, client, client->frame, client->titlegc, 0, 0);
718 uint32_t background_color;
720 background_color = config.client.urgent.background;
721 /* Distinguish if the window is currently focused… */
722 else if (CUR_CELL != NULL && CUR_CELL->currently_focused == client)
723 background_color = config.client.focused.background;
724 /* …or if it is the focused window in a not focused container */
725 else background_color = config.client.focused_inactive.background;
727 /* Set foreground color to current focused color, line width to 2 */
728 uint32_t values[] = {background_color, 2};
729 xcb_change_gc(conn, client->titlegc, XCB_GC_FOREGROUND | XCB_GC_LINE_WIDTH, values);
731 /* Draw the border, the ±1 is for line width = 2 */
732 xcb_point_t points[] = {{1, 0}, /* left upper edge */
733 {1, client->rect.height-1}, /* left bottom edge */
734 {client->rect.width-1, client->rect.height-1}, /* right bottom edge */
735 {client->rect.width-1, 0}}; /* right upper edge */
736 xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, client->frame, client->titlegc, 4, points);
738 /* Draw a black background */
739 xcb_change_gc_single(conn, client->titlegc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#000000"));
740 xcb_rectangle_t crect = {2, 0, client->rect.width - (2 + 2), client->rect.height - 2};
741 xcb_poly_fill_rectangle(conn, client->frame, client->titlegc, 1, &crect);
748 * Handle client messages (EWMH)
751 int handle_client_message(void *data, xcb_connection_t *conn, xcb_client_message_event_t *event) {
752 if (event->type == atoms[_NET_WM_STATE]) {
753 if (event->format != 32 || event->data.data32[1] != atoms[_NET_WM_STATE_FULLSCREEN])
756 Client *client = table_get(&by_child, event->window);
760 /* Check if the fullscreen state should be toggled */
761 if ((client->fullscreen &&
762 (event->data.data32[0] == _NET_WM_STATE_REMOVE ||
763 event->data.data32[0] == _NET_WM_STATE_TOGGLE)) ||
764 (!client->fullscreen &&
765 (event->data.data32[0] == _NET_WM_STATE_ADD ||
766 event->data.data32[0] == _NET_WM_STATE_TOGGLE)))
767 client_toggle_fullscreen(conn, client);
769 LOG("unhandled clientmessage\n");
776 int handle_window_type(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
777 xcb_atom_t atom, xcb_get_property_reply_t *property) {
778 /* TODO: Implement this one. To do this, implement a little test program which sleep(1)s
779 before changing this property. */
780 LOG("_NET_WM_WINDOW_TYPE changed, this is not yet implemented.\n");
785 * Handles the size hints set by a window, but currently only the part necessary for displaying
786 * clients proportionally inside their frames (mplayer for example)
788 * See ICCCM 4.1.2.3 for more details
791 int handle_normal_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
792 xcb_atom_t name, xcb_get_property_reply_t *reply) {
793 Client *client = table_get(&by_child, window);
794 if (client == NULL) {
795 LOG("Received WM_SIZE_HINTS for unknown client\n");
798 xcb_size_hints_t size_hints;
802 /* If the hints were already in this event, use them, if not, request them */
804 xcb_get_wm_size_hints_from_reply(&size_hints, reply);
806 xcb_get_wm_normal_hints_reply(conn, xcb_get_wm_normal_hints_unchecked(conn, client->child), &size_hints, NULL);
808 if ((size_hints.flags & XCB_SIZE_HINT_P_MIN_SIZE)) {
809 // TODO: Minimum size is not yet implemented
810 //LOG("Minimum size: %d (width) x %d (height)\n", size_hints.min_width, size_hints.min_height);
813 if ((size_hints.flags & XCB_SIZE_HINT_P_RESIZE_INC)) {
814 bool changed = false;
816 if (size_hints.width_inc > 0)
817 if (client->width_increment != size_hints.width_inc) {
818 client->width_increment = size_hints.width_inc;
821 if (size_hints.height_inc > 0)
822 if (client->height_increment != size_hints.height_inc) {
823 client->height_increment = size_hints.height_inc;
828 resize_client(conn, client);
833 int base_width = 0, base_height = 0;
835 /* base_width/height are the desired size of the window.
836 We check if either the program-specified size or the program-specified
837 min-size is available */
838 if (size_hints.flags & XCB_SIZE_HINT_P_SIZE) {
839 base_width = size_hints.base_width;
840 base_height = size_hints.base_height;
841 } else if (size_hints.flags & XCB_SIZE_HINT_P_MIN_SIZE) {
842 base_width = size_hints.min_width;
843 base_height = size_hints.min_height;
846 client->base_width = base_width;
847 client->base_height = base_height;
849 /* If no aspect ratio was set or if it was invalid, we ignore the hints */
850 if (!(size_hints.flags & XCB_SIZE_HINT_P_ASPECT) ||
851 (size_hints.min_aspect_num <= 0) ||
852 (size_hints.min_aspect_den <= 0)) {
856 double width = client->rect.width - base_width;
857 double height = client->rect.height - base_height;
858 /* Convert numerator/denominator to a double */
859 double min_aspect = (double)size_hints.min_aspect_num / size_hints.min_aspect_den;
860 double max_aspect = (double)size_hints.max_aspect_num / size_hints.min_aspect_den;
862 LOG("Aspect ratio set: minimum %f, maximum %f\n", min_aspect, max_aspect);
863 LOG("width = %f, height = %f\n", width, height);
865 /* Sanity checks, this is user-input, in a way */
866 if (max_aspect <= 0 || min_aspect <= 0 || height == 0 || (width / height) <= 0)
869 /* Check if we need to set proportional_* variables using the correct ratio */
870 if ((width / height) < min_aspect) {
871 client->proportional_width = width;
872 client->proportional_height = width / min_aspect;
873 } else if ((width / height) > max_aspect) {
874 client->proportional_width = width;
875 client->proportional_height = width / max_aspect;
878 client->force_reconfigure = true;
880 if (client->container != NULL) {
881 render_container(conn, client->container);
889 * Handles the WM_HINTS property for extracting the urgency state of the window.
892 int handle_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
893 xcb_atom_t name, xcb_get_property_reply_t *reply) {
894 Client *client = table_get(&by_child, window);
895 if (client == NULL) {
896 LOG("Received WM_HINTS for unknown client\n");
899 xcb_wm_hints_t hints;
902 if (!xcb_get_wm_hints_from_reply(&hints, reply))
905 if (!xcb_get_wm_hints_reply(conn, xcb_get_wm_hints_unchecked(conn, client->child), &hints, NULL))
909 /* Update the flag on the client directly */
910 client->urgent = (xcb_wm_hints_get_urgency(&hints) != 0);
912 LOG("Urgency flag changed to %d\n", client->urgent);
914 workspace_update_urgent_flag(client->workspace);
915 redecorate_window(conn, client);
917 /* If the workspace this client is on is not visible, we need to redraw
918 * the workspace bar */
919 if (!workspace_is_visible(client->workspace)) {
920 i3Screen *screen = client->workspace->screen;
921 render_workspace(conn, screen, screen->current_workspace);
929 * Handles the transient for hints set by a window, signalizing that this window is a popup window
930 * for some other window.
932 * See ICCCM 4.1.2.6 for more details
935 int handle_transient_for(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
936 xcb_atom_t name, xcb_get_property_reply_t *reply) {
937 Client *client = table_get(&by_child, window);
938 if (client == NULL) {
939 LOG("No such client\n");
943 xcb_window_t transient_for;
946 if (!xcb_get_wm_transient_for_from_reply(&transient_for, reply))
949 if (!xcb_get_wm_transient_for_reply(conn, xcb_get_wm_transient_for_unchecked(conn, window),
950 &transient_for, NULL))
954 if (client->floating == FLOATING_AUTO_OFF) {
955 LOG("This is a popup window, putting into floating\n");
956 toggle_floating_mode(conn, client, true);
963 * Handles changes of the WM_CLIENT_LEADER atom which specifies if this is a
964 * toolwindow (or similar) and to which window it belongs (logical parent).
967 int handle_clientleader_change(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
968 xcb_atom_t name, xcb_get_property_reply_t *prop) {
970 prop = xcb_get_property_reply(conn, xcb_get_property_unchecked(conn,
971 false, window, WM_CLIENT_LEADER, WINDOW, 0, 32), NULL);
976 Client *client = table_get(&by_child, window);
980 xcb_window_t *leader = xcb_get_property_value(prop);
981 if (leader == NULL || *leader == 0)
984 LOG("Client leader changed to %08x\n", *leader);
986 client->leader = *leader;