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 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 /* instead of removing a sequence number we better wait until it gets
52 * garbage collected. it may generate multiple events (there are multiple
53 * enter_notifies for one configure_request, for example). */
54 //SLIST_REMOVE(&ignore_events, event, Ignore_Event, ignore_events);
63 * There was a key press. We compare this key code with our bindings table and pass
64 * the bound action to parse_command().
67 int handle_key_press(void *ignored, xcb_connection_t *conn, xcb_key_press_event_t *event) {
68 DLOG("Keypress %d, state raw = %d\n", event->detail, event->state);
70 /* Remove the numlock bit, all other bits are modifiers we can bind to */
71 uint16_t state_filtered = event->state & ~(xcb_numlock_mask | XCB_MOD_MASK_LOCK);
72 DLOG("(removed numlock, state = %d)\n", state_filtered);
73 /* Only use the lower 8 bits of the state (modifier masks) so that mouse
74 * button masks are filtered out */
75 state_filtered &= 0xFF;
76 DLOG("(removed upper 8 bits, state = %d)\n", state_filtered);
78 if (xkb_current_group == XkbGroup2Index)
79 state_filtered |= BIND_MODE_SWITCH;
81 DLOG("(checked mode_switch, state %d)\n", state_filtered);
83 /* Find the binding */
84 Binding *bind = get_binding(state_filtered, event->detail);
86 /* No match? Then the user has Mode_switch enabled but does not have a
87 * specific keybinding. Fall back to the default keybindings (without
88 * Mode_switch). Makes it much more convenient for users of a hybrid
89 * layout (like us, ru). */
91 state_filtered &= ~(BIND_MODE_SWITCH);
92 DLOG("no match, new state_filtered = %d\n", state_filtered);
93 if ((bind = get_binding(state_filtered, event->detail)) == NULL) {
94 ELOG("Could not lookup key binding (modifiers %d, keycode %d)\n",
95 state_filtered, event->detail);
100 parse_cmd(bind->command);
108 * Called with coordinates of an enter_notify event or motion_notify event
109 * to check if the user crossed virtual screen boundaries and adjust the
110 * current workspace, if so.
113 static void check_crossing_screen_boundary(uint32_t x, uint32_t y) {
116 if ((output = get_output_containing(x, y)) == NULL) {
117 ELOG("ERROR: No such screen\n");
120 if (output == c_ws->output)
123 c_ws->current_row = current_row;
124 c_ws->current_col = current_col;
125 c_ws = output->current_workspace;
126 current_row = c_ws->current_row;
127 current_col = c_ws->current_col;
128 DLOG("We're now on output %p\n", output);
130 /* While usually this function is only called when the user switches
131 * to a different output using his mouse (and thus the output is
132 * empty), it may be that the following race condition occurs:
133 * 1) the user actives a new output (say VGA1).
134 * 2) the cursor is sent to the first pixel of the new VGA1, thus
135 * generating an enter_notify for the screen (the enter_notify
136 * is not yet received by i3).
137 * 3) i3 requeries screen configuration and maps a workspace onto the
139 * 4) the enter_notify event arrives and c_ws is set to the new
140 * workspace but the existing windows on the new workspace are not
143 * Therefore, we re-set the focus here to be sure it’s correct. */
144 Client *first_client = SLIST_FIRST(&(c_ws->focus_stack));
145 if (first_client != NULL)
146 set_focus(global_conn, first_client, true);
151 * When the user moves the mouse pointer onto a window, this callback gets called.
154 int handle_enter_notify(void *ignored, xcb_connection_t *conn,
155 xcb_enter_notify_event_t *event) {
158 DLOG("enter_notify for %08x, mode = %d, detail %d, serial %d\n",
159 event->event, event->mode, event->detail, event->sequence);
160 DLOG("coordinates %x, %x\n", event->event_x, event->event_y);
161 if (event->mode != XCB_NOTIFY_MODE_NORMAL) {
162 DLOG("This was not a normal notify, ignoring\n");
165 /* Some events are not interesting, because they were not generated
166 * actively by the user, but by reconfiguration of windows */
167 if (event_is_ignored(event->sequence))
170 /* Get container by frame or by child window */
171 if ((con = con_by_frame_id(event->event)) == NULL)
172 con = con_by_window_id(event->event);
174 /* If not, then the user moved his cursor to the root window. In that case, we adjust c_ws */
176 DLOG("Getting screen at %d x %d\n", event->root_x, event->root_y);
177 //check_crossing_screen_boundary(event->root_x, event->root_y);
181 /* see if the user entered the window on a certain window decoration */
182 int layout = con->layout;
184 TAILQ_FOREACH(child, &(con->nodes_head), nodes)
185 if (rect_contains(child->deco_rect, event->event_x, event->event_y)) {
186 LOG("using child %p / %s instead!\n", child, child->name);
191 /* for stacked/tabbed layout we do not want to change focus when the user
192 * enters the window at the decoration of any child window. */
193 if (layout == L_STACKED || layout == L_TABBED) {
194 con = TAILQ_FIRST(&(con->parent->focus_head));
195 LOG("using focused %p / %s instead\n", con, con->name);
199 if (client->workspace != c_ws && client->workspace->output == c_ws->output) {
200 /* This can happen when a client gets assigned to a different workspace than
201 * the current one (see src/mainx.c:reparent_window). Shortly after it was created,
202 * an enter_notify will follow. */
203 DLOG("enter_notify for a client on a different workspace but the same screen, ignoring\n");
208 if (config.disable_focus_follows_mouse)
211 while (!TAILQ_EMPTY(&(next->focus_head)))
212 next = TAILQ_FIRST(&(next->focus_head));
215 x_push_changes(croot);
222 * When the user moves the mouse but does not change the active window
223 * (e.g. when having no windows opened but moving mouse on the root screen
224 * and crossing virtual screen boundaries), this callback gets called.
227 int handle_motion_notify(void *ignored, xcb_connection_t *conn, xcb_motion_notify_event_t *event) {
228 /* Skip events where the pointer was over a child window, we are only
229 * interested in events on the root window. */
230 if (event->child != 0)
233 check_crossing_screen_boundary(event->root_x, event->root_y);
239 * Called when the keyboard mapping changes (for example by using Xmodmap),
240 * we need to update our key bindings then (re-translate symbols).
243 int handle_mapping_notify(void *ignored, xcb_connection_t *conn, xcb_mapping_notify_event_t *event) {
244 if (event->request != XCB_MAPPING_KEYBOARD &&
245 event->request != XCB_MAPPING_MODIFIER)
248 DLOG("Received mapping_notify for keyboard or modifier mapping, re-grabbing keys\n");
249 xcb_refresh_keyboard_mapping(keysyms, event);
251 xcb_get_numlock_mask(conn);
253 ungrab_all_keys(conn);
255 grab_all_keys(conn, false);
262 * A new window appeared on the screen (=was mapped), so let’s manage it.
265 int handle_map_request(void *prophs, xcb_connection_t *conn, xcb_map_request_event_t *event) {
266 xcb_get_window_attributes_cookie_t cookie;
268 cookie = xcb_get_window_attributes_unchecked(conn, event->window);
270 DLOG("window = 0x%08x, serial is %d.\n", event->window, event->sequence);
271 add_ignore_event(event->sequence);
273 manage_window(event->window, cookie, false);
274 x_push_changes(croot);
279 * Configure requests are received when the application wants to resize windows on their own.
281 * We generate a synthethic configure notify event to signalize the client its "new" position.
284 int handle_configure_request(void *prophs, xcb_connection_t *conn, xcb_configure_request_event_t *event) {
285 DLOG("window 0x%08x wants to be at %dx%d with %dx%d\n",
286 event->window, event->x, event->y, event->width, event->height);
288 Client *client = table_get(&by_child, event->window);
289 if (client == NULL) {
293 #define COPY_MASK_MEMBER(mask_member, event_member) do { \
294 if (event->value_mask & mask_member) { \
295 mask |= mask_member; \
296 values[c++] = event->event_member; \
300 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_X, x);
301 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_Y, y);
302 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_WIDTH, width);
303 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_HEIGHT, height);
304 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_BORDER_WIDTH, border_width);
305 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_SIBLING, sibling);
306 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_STACK_MODE, stack_mode);
308 xcb_configure_window(conn, event->window, mask, values);
314 if (client->fullscreen) {
315 DLOG("Client is in fullscreen mode\n");
317 Rect child_rect = client->workspace->rect;
318 child_rect.x = child_rect.y = 0;
319 fake_configure_notify(conn, child_rect, client->child);
324 /* Floating clients can be reconfigured */
325 if (client_is_floating(client)) {
326 i3Font *font = load_font(conn, config.font);
327 int mode = (client->container != NULL ? client->container->mode : MODE_DEFAULT);
328 /* TODO: refactor this code. we need a function to translate
329 * coordinates of child_rect/rect. */
331 if (event->value_mask & XCB_CONFIG_WINDOW_X) {
332 if (mode == MODE_STACK || mode == MODE_TABBED) {
333 client->rect.x = event->x - 2;
335 if (client->titlebar_position == TITLEBAR_OFF && client->borderless)
336 client->rect.x = event->x;
337 else if (client->titlebar_position == TITLEBAR_OFF && !client->borderless)
338 client->rect.x = event->x - 1;
339 else client->rect.x = event->x - 2;
342 if (event->value_mask & XCB_CONFIG_WINDOW_Y) {
343 if (mode == MODE_STACK || mode == MODE_TABBED) {
344 client->rect.y = event->y - 2;
346 if (client->titlebar_position == TITLEBAR_OFF && client->borderless)
347 client->rect.y = event->y;
348 else if (client->titlebar_position == TITLEBAR_OFF && !client->borderless)
349 client->rect.y = event->y - 1;
350 else client->rect.y = event->y - font->height - 2 - 2;
353 if (event->value_mask & XCB_CONFIG_WINDOW_WIDTH) {
354 if (mode == MODE_STACK || mode == MODE_TABBED) {
355 client->rect.width = event->width + 2 + 2;
357 if (client->titlebar_position == TITLEBAR_OFF && client->borderless)
358 client->rect.width = event->width;
359 else if (client->titlebar_position == TITLEBAR_OFF && !client->borderless)
360 client->rect.width = event->width + (1 + 1);
361 else client->rect.width = event->width + (2 + 2);
364 if (event->value_mask & XCB_CONFIG_WINDOW_HEIGHT) {
365 if (mode == MODE_STACK || mode == MODE_TABBED) {
366 client->rect.height = event->height + 2;
368 if (client->titlebar_position == TITLEBAR_OFF && client->borderless)
369 client->rect.height = event->height;
370 else if (client->titlebar_position == TITLEBAR_OFF && !client->borderless)
371 client->rect.height = event->height + (1 + 1);
372 else client->rect.height = event->height + (font->height + 2 + 2) + 2;
376 DLOG("Accepted new position/size for floating client: (%d, %d) size %d x %d\n",
377 client->rect.x, client->rect.y, client->rect.width, client->rect.height);
379 /* Push the new position/size to X11 */
380 reposition_client(conn, client);
381 resize_client(conn, client);
387 /* Dock clients can be reconfigured in their height */
389 DLOG("Reconfiguring height of this dock client\n");
391 if (!(event->value_mask & XCB_CONFIG_WINDOW_HEIGHT)) {
392 DLOG("Ignoring configure request, no height given\n");
396 client->desired_height = event->height;
397 render_workspace(conn, c_ws->output, c_ws);
403 if (client->fullscreen) {
404 DLOG("Client is in fullscreen mode\n");
406 Rect child_rect = client->container->workspace->rect;
407 child_rect.x = child_rect.y = 0;
408 fake_configure_notify(conn, child_rect, client->child);
413 fake_absolute_configure_notify(conn, client);
419 * Configuration notifies are only handled because we need to set up ignore for
420 * the following enter notify events.
423 int handle_configure_event(void *prophs, xcb_connection_t *conn, xcb_configure_notify_event_t *event) {
424 DLOG("configure_event, sequence %d\n", event->sequence);
425 /* We ignore this sequence twice because events for child and frame should be ignored */
426 add_ignore_event(event->sequence);
427 add_ignore_event(event->sequence);
433 * Gets triggered upon a RandR screen change event, that is when the user
434 * changes the screen configuration in any way (mode, position, …)
437 int handle_screen_change(void *prophs, xcb_connection_t *conn,
438 xcb_generic_event_t *e) {
439 DLOG("RandR screen change\n");
441 randr_query_outputs(conn);
443 ipc_send_event("output", I3_IPC_EVENT_OUTPUT, "{\"change\":\"unspecified\"}");
450 * Our window decorations were unmapped. That means, the window will be killed
451 * now, so we better clean up before.
454 int handle_unmap_notify_event(void *data, xcb_connection_t *conn, xcb_unmap_notify_event_t *event) {
456 bool ignored = event_is_ignored(event->sequence);
458 /* FIXME: we cannot ignore this sequence because more UnmapNotifys with the same sequence
459 * numbers but different window IDs may follow */
460 /* we need to ignore EnterNotify events which will be generated because a
461 * different window is visible now */
462 //add_ignore_event(event->sequence);
464 DLOG("UnmapNotify for 0x%08x (received from 0x%08x), serial %d\n", event->window, event->event, event->sequence);
466 DLOG("Ignoring UnmapNotify (generated by reparenting)\n");
469 Con *con = con_by_window_id(event->window);
471 LOG("Not a managed window, ignoring\n");
475 tree_close(con, false);
477 x_push_changes(croot);
481 if (client == NULL) {
482 DLOG("not a managed window. Ignoring.\n");
484 /* This was most likely the destroyed frame of a client which is
485 * currently being unmapped, so we add this sequence (again!) to
486 * the ignore list (enter_notify events will get sent for both,
487 * the child and its frame). */
488 add_ignore_event(event->sequence);
496 /* Let’s see how many clients there are left on the workspace to delete it if it’s empty */
497 bool workspace_empty = SLIST_EMPTY(&(client->workspace->focus_stack));
498 bool workspace_focused = (c_ws == client->workspace);
499 Client *to_focus = (!workspace_empty ? SLIST_FIRST(&(client->workspace->focus_stack)) : NULL);
501 /* If this workspace is currently visible, we don’t delete it */
502 if (workspace_is_visible(client->workspace))
503 workspace_empty = false;
505 if (workspace_empty) {
506 client->workspace->output = NULL;
507 ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"empty\"}");
510 /* Remove the urgency flag if set */
511 client->urgent = false;
512 workspace_update_urgent_flag(client->workspace);
521 * A destroy notify event is sent when the window is not unmapped, but
522 * immediately destroyed (for example when starting a window and immediately
523 * killing the program which started it).
525 * We just pass on the event to the unmap notify handler (by copying the
526 * important fields in the event data structure).
529 int handle_destroy_notify_event(void *data, xcb_connection_t *conn, xcb_destroy_notify_event_t *event) {
530 DLOG("destroy notify for 0x%08x, 0x%08x\n", event->event, event->window);
532 xcb_unmap_notify_event_t unmap;
533 unmap.sequence = event->sequence;
534 unmap.event = event->event;
535 unmap.window = event->window;
537 return handle_unmap_notify_event(NULL, conn, &unmap);
541 * Called when a window changes its title
544 int handle_windowname_change(void *data, xcb_connection_t *conn, uint8_t state,
545 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
547 if ((con = con_by_window_id(window)) == NULL || con->window == NULL)
550 window_update_name(con->window, prop);
552 x_push_changes(croot);
558 * Handles legacy window name updates (WM_NAME), see also src/window.c,
559 * window_update_name_legacy().
562 int handle_windowname_change_legacy(void *data, xcb_connection_t *conn, uint8_t state,
563 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
565 if ((con = con_by_window_id(window)) == NULL || con->window == NULL)
568 window_update_name_legacy(con->window, prop);
570 x_push_changes(croot);
576 * Updates the client’s WM_CLASS property
579 int handle_windowclass_change(void *data, xcb_connection_t *conn, uint8_t state,
580 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
582 if ((con = con_by_window_id(window)) == NULL || con->window == NULL)
585 window_update_class(con->window, prop);
591 * Expose event means we should redraw our windows (= title bar)
594 int handle_expose_event(void *data, xcb_connection_t *conn, xcb_expose_event_t *event) {
597 /* event->count is the number of minimum remaining expose events for this
598 * window, so we skip all events but the last one */
599 if (event->count != 0)
602 DLOG("window = %08x\n", event->window);
604 if ((parent = con_by_frame_id(event->window)) == NULL) {
605 LOG("expose event for unknown window, ignoring\n");
609 TAILQ_FOREACH(con, &(parent->nodes_head), nodes) {
610 LOG("expose for con %p / %s\n", con, con->name);
612 x_draw_decoration(con);
620 uint32_t background_color;
622 background_color = config.client.urgent.background;
623 /* Distinguish if the window is currently focused… */
624 else if (CUR_CELL != NULL && CUR_CELL->currently_focused == client)
625 background_color = config.client.focused.background;
626 /* …or if it is the focused window in a not focused container */
627 else background_color = config.client.focused_inactive.background;
629 /* Set foreground color to current focused color, line width to 2 */
630 uint32_t values[] = {background_color, 2};
631 xcb_change_gc(conn, client->titlegc, XCB_GC_FOREGROUND | XCB_GC_LINE_WIDTH, values);
633 /* Draw the border, the ±1 is for line width = 2 */
634 xcb_point_t points[] = {{1, 0}, /* left upper edge */
635 {1, client->rect.height-1}, /* left bottom edge */
636 {client->rect.width-1, client->rect.height-1}, /* right bottom edge */
637 {client->rect.width-1, 0}}; /* right upper edge */
638 xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, client->frame, client->titlegc, 4, points);
640 /* Draw a black background */
641 xcb_change_gc_single(conn, client->titlegc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#000000"));
642 if (client->titlebar_position == TITLEBAR_OFF && !client->borderless) {
643 xcb_rectangle_t crect = {1, 0, client->rect.width - (1 + 1), client->rect.height - 1};
644 xcb_poly_fill_rectangle(conn, client->frame, client->titlegc, 1, &crect);
646 xcb_rectangle_t crect = {2, 0, client->rect.width - (2 + 2), client->rect.height - 2};
647 xcb_poly_fill_rectangle(conn, client->frame, client->titlegc, 1, &crect);
656 * Handle client messages (EWMH)
659 int handle_client_message(void *data, xcb_connection_t *conn, xcb_client_message_event_t *event) {
660 LOG("ClientMessage for window 0x%08x\n", event->window);
661 if (event->type == atoms[_NET_WM_STATE]) {
662 if (event->format != 32 || event->data.data32[1] != atoms[_NET_WM_STATE_FULLSCREEN])
665 Con *con = con_by_window_id(event->window);
669 /* Check if the fullscreen state should be toggled */
670 if ((con->fullscreen_mode != CF_NONE &&
671 (event->data.data32[0] == _NET_WM_STATE_REMOVE ||
672 event->data.data32[0] == _NET_WM_STATE_TOGGLE)) ||
673 (con->fullscreen_mode == CF_NONE &&
674 (event->data.data32[0] == _NET_WM_STATE_ADD ||
675 event->data.data32[0] == _NET_WM_STATE_TOGGLE)))
676 con_toggle_fullscreen(con);
679 x_push_changes(croot);
681 ELOG("unhandled clientmessage\n");
689 int handle_window_type(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
690 xcb_atom_t atom, xcb_get_property_reply_t *property) {
691 /* TODO: Implement this one. To do this, implement a little test program which sleep(1)s
692 before changing this property. */
693 ELOG("_NET_WM_WINDOW_TYPE changed, this is not yet implemented.\n");
698 * Handles the size hints set by a window, but currently only the part necessary for displaying
699 * clients proportionally inside their frames (mplayer for example)
701 * See ICCCM 4.1.2.3 for more details
704 int handle_normal_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
705 xcb_atom_t name, xcb_get_property_reply_t *reply) {
706 Client *client = table_get(&by_child, window);
707 if (client == NULL) {
708 DLOG("Received WM_SIZE_HINTS for unknown client\n");
711 xcb_size_hints_t size_hints;
715 /* If the hints were already in this event, use them, if not, request them */
717 xcb_get_wm_size_hints_from_reply(&size_hints, reply);
719 xcb_get_wm_normal_hints_reply(conn, xcb_get_wm_normal_hints_unchecked(conn, client->child), &size_hints, NULL);
721 if ((size_hints.flags & XCB_SIZE_HINT_P_MIN_SIZE)) {
722 // TODO: Minimum size is not yet implemented
723 DLOG("Minimum size: %d (width) x %d (height)\n", size_hints.min_width, size_hints.min_height);
726 bool changed = false;
727 if ((size_hints.flags & XCB_SIZE_HINT_P_RESIZE_INC)) {
728 if (size_hints.width_inc > 0 && size_hints.width_inc < 0xFFFF)
729 if (client->width_increment != size_hints.width_inc) {
730 client->width_increment = size_hints.width_inc;
733 if (size_hints.height_inc > 0 && size_hints.height_inc < 0xFFFF)
734 if (client->height_increment != size_hints.height_inc) {
735 client->height_increment = size_hints.height_inc;
740 DLOG("resize increments changed\n");
743 int base_width = 0, base_height = 0;
745 /* base_width/height are the desired size of the window.
746 We check if either the program-specified size or the program-specified
747 min-size is available */
748 if (size_hints.flags & XCB_SIZE_HINT_BASE_SIZE) {
749 base_width = size_hints.base_width;
750 base_height = size_hints.base_height;
751 } else if (size_hints.flags & XCB_SIZE_HINT_P_MIN_SIZE) {
752 /* TODO: is this right? icccm says not */
753 base_width = size_hints.min_width;
754 base_height = size_hints.min_height;
757 if (base_width != client->base_width ||
758 base_height != client->base_height) {
759 client->base_width = base_width;
760 client->base_height = base_height;
761 DLOG("client's base_height changed to %d\n", base_height);
762 DLOG("client's base_width changed to %d\n", base_width);
767 if (client->fullscreen)
768 DLOG("Not resizing client, it is in fullscreen mode\n");
770 resize_client(conn, client);
775 /* If no aspect ratio was set or if it was invalid, we ignore the hints */
776 if (!(size_hints.flags & XCB_SIZE_HINT_P_ASPECT) ||
777 (size_hints.min_aspect_num <= 0) ||
778 (size_hints.min_aspect_den <= 0)) {
782 double width = client->rect.width - base_width;
783 double height = client->rect.height - base_height;
784 /* Convert numerator/denominator to a double */
785 double min_aspect = (double)size_hints.min_aspect_num / size_hints.min_aspect_den;
786 double max_aspect = (double)size_hints.max_aspect_num / size_hints.min_aspect_den;
788 DLOG("Aspect ratio set: minimum %f, maximum %f\n", min_aspect, max_aspect);
789 DLOG("width = %f, height = %f\n", width, height);
791 /* Sanity checks, this is user-input, in a way */
792 if (max_aspect <= 0 || min_aspect <= 0 || height == 0 || (width / height) <= 0)
795 /* Check if we need to set proportional_* variables using the correct ratio */
796 if ((width / height) < min_aspect) {
797 client->proportional_width = width;
798 client->proportional_height = width / min_aspect;
799 } else if ((width / height) > max_aspect) {
800 client->proportional_width = width;
801 client->proportional_height = width / max_aspect;
804 client->force_reconfigure = true;
806 if (client->container != NULL) {
807 render_container(conn, client->container);
816 * Handles the WM_HINTS property for extracting the urgency state of the window.
819 int handle_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
820 xcb_atom_t name, xcb_get_property_reply_t *reply) {
821 Con *con = con_by_window_id(window);
823 DLOG("Received WM_HINTS for unknown client\n");
827 xcb_wm_hints_t hints;
830 if (!xcb_get_wm_hints_from_reply(&hints, reply))
833 if (!xcb_get_wm_hints_reply(conn, xcb_get_wm_hints_unchecked(conn, con->window->id), &hints, NULL))
837 if (!con->urgent && focused == con) {
838 DLOG("Ignoring urgency flag for current client\n");
842 /* Update the flag on the client directly */
843 con->urgent = (xcb_wm_hints_get_urgency(&hints) != 0);
845 LOG("Urgency flag changed to %d\n", con->urgent);
847 workspace_update_urgent_flag(con_get_workspace(con));
850 /* If the workspace this client is on is not visible, we need to redraw
851 * the workspace bar */
852 if (!workspace_is_visible(client->workspace)) {
853 Output *output = client->workspace->output;
854 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 int 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 *reply) {
873 Client *client = table_get(&by_child, window);
874 if (client == NULL) {
875 DLOG("No such client\n");
879 xcb_window_t transient_for;
882 if (!xcb_get_wm_transient_for_from_reply(&transient_for, reply))
885 if (!xcb_get_wm_transient_for_reply(conn, xcb_get_wm_transient_for_unchecked(conn, window),
886 &transient_for, NULL))
890 if (client->floating == FLOATING_AUTO_OFF) {
891 DLOG("This is a popup window, putting into floating\n");
892 toggle_floating_mode(conn, client, true);
899 * Handles changes of the WM_CLIENT_LEADER atom which specifies if this is a
900 * toolwindow (or similar) and to which window it belongs (logical parent).
903 int handle_clientleader_change(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
904 xcb_atom_t name, xcb_get_property_reply_t *prop) {
906 prop = xcb_get_property_reply(conn, xcb_get_property_unchecked(conn,
907 false, window, WM_CLIENT_LEADER, WINDOW, 0, 32), NULL);
912 Client *client = table_get(&by_child, window);
916 xcb_window_t *leader = xcb_get_property_value(prop);
920 DLOG("Client leader changed to %08x\n", *leader);
922 client->leader = *leader;