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 * Unignores the given sequence. Called when unmap events (generated by
33 * reparenting) should be ignored and the unmap event actually happens, in
34 * order to not ignore too many unmap events (leading to ghost window
38 static void unignore_event(const int sequence) {
39 struct Ignore_Event *event;
40 for (event = SLIST_FIRST(&ignore_events);
41 event != SLIST_END(&ignore_events);
42 event = SLIST_NEXT(event, ignore_events)) {
43 if (event->sequence != sequence)
46 DLOG("Unignoring sequence number %d\n", sequence);
47 struct Ignore_Event *save = event;
48 event = SLIST_NEXT(event, ignore_events);
49 SLIST_REMOVE(&ignore_events, save, Ignore_Event, ignore_events);
56 * Checks if the given sequence is ignored and returns true if so.
59 static bool event_is_ignored(const int sequence) {
60 struct Ignore_Event *event;
61 time_t now = time(NULL);
62 for (event = SLIST_FIRST(&ignore_events); event != SLIST_END(&ignore_events);) {
63 if ((now - event->added) > 5) {
64 struct Ignore_Event *save = event;
65 event = SLIST_NEXT(event, ignore_events);
66 SLIST_REMOVE(&ignore_events, save, Ignore_Event, ignore_events);
68 } else event = SLIST_NEXT(event, ignore_events);
71 SLIST_FOREACH(event, &ignore_events, ignore_events) {
72 if (event->sequence != sequence)
75 /* instead of removing a sequence number we better wait until it gets
76 * garbage collected. it may generate multiple events (there are multiple
77 * enter_notifies for one configure_request, for example). */
78 //SLIST_REMOVE(&ignore_events, event, Ignore_Event, ignore_events);
87 * There was a key press. We compare this key code with our bindings table and pass
88 * the bound action to parse_command().
91 int handle_key_press(void *ignored, xcb_connection_t *conn, xcb_key_press_event_t *event) {
92 DLOG("Keypress %d, state raw = %d\n", event->detail, event->state);
94 /* Remove the numlock bit, all other bits are modifiers we can bind to */
95 uint16_t state_filtered = event->state & ~(xcb_numlock_mask | XCB_MOD_MASK_LOCK);
96 DLOG("(removed numlock, state = %d)\n", state_filtered);
97 /* Only use the lower 8 bits of the state (modifier masks) so that mouse
98 * button masks are filtered out */
99 state_filtered &= 0xFF;
100 DLOG("(removed upper 8 bits, state = %d)\n", state_filtered);
102 if (xkb_current_group == XkbGroup2Index)
103 state_filtered |= BIND_MODE_SWITCH;
105 DLOG("(checked mode_switch, state %d)\n", state_filtered);
107 /* Find the binding */
108 Binding *bind = get_binding(state_filtered, event->detail);
110 /* No match? Then the user has Mode_switch enabled but does not have a
111 * specific keybinding. Fall back to the default keybindings (without
112 * Mode_switch). Makes it much more convenient for users of a hybrid
113 * layout (like us, ru). */
115 state_filtered &= ~(BIND_MODE_SWITCH);
116 DLOG("no match, new state_filtered = %d\n", state_filtered);
117 if ((bind = get_binding(state_filtered, event->detail)) == NULL) {
118 ELOG("Could not lookup key binding (modifiers %d, keycode %d)\n",
119 state_filtered, event->detail);
124 parse_cmd(bind->command);
132 * Called with coordinates of an enter_notify event or motion_notify event
133 * to check if the user crossed virtual screen boundaries and adjust the
134 * current workspace, if so.
137 static void check_crossing_screen_boundary(uint32_t x, uint32_t y) {
140 if ((output = get_output_containing(x, y)) == NULL) {
141 ELOG("ERROR: No such screen\n");
144 if (output == c_ws->output)
147 c_ws->current_row = current_row;
148 c_ws->current_col = current_col;
149 c_ws = output->current_workspace;
150 current_row = c_ws->current_row;
151 current_col = c_ws->current_col;
152 DLOG("We're now on output %p\n", output);
154 /* While usually this function is only called when the user switches
155 * to a different output using his mouse (and thus the output is
156 * empty), it may be that the following race condition occurs:
157 * 1) the user actives a new output (say VGA1).
158 * 2) the cursor is sent to the first pixel of the new VGA1, thus
159 * generating an enter_notify for the screen (the enter_notify
160 * is not yet received by i3).
161 * 3) i3 requeries screen configuration and maps a workspace onto the
163 * 4) the enter_notify event arrives and c_ws is set to the new
164 * workspace but the existing windows on the new workspace are not
167 * Therefore, we re-set the focus here to be sure it’s correct. */
168 Client *first_client = SLIST_FIRST(&(c_ws->focus_stack));
169 if (first_client != NULL)
170 set_focus(global_conn, first_client, true);
175 * When the user moves the mouse pointer onto a window, this callback gets called.
178 int handle_enter_notify(void *ignored, xcb_connection_t *conn,
179 xcb_enter_notify_event_t *event) {
182 DLOG("enter_notify for %08x, mode = %d, detail %d, serial %d\n",
183 event->event, event->mode, event->detail, event->sequence);
184 DLOG("coordinates %d, %d\n", event->event_x, event->event_y);
185 if (event->mode != XCB_NOTIFY_MODE_NORMAL) {
186 DLOG("This was not a normal notify, ignoring\n");
189 /* Some events are not interesting, because they were not generated
190 * actively by the user, but by reconfiguration of windows */
191 if (event_is_ignored(event->sequence))
194 bool enter_child = false;
195 /* Get container by frame or by child window */
196 if ((con = con_by_frame_id(event->event)) == NULL) {
197 con = con_by_window_id(event->event);
201 /* If not, then the user moved his cursor to the root window. In that case, we adjust c_ws */
203 DLOG("Getting screen at %d x %d\n", event->root_x, event->root_y);
204 //check_crossing_screen_boundary(event->root_x, event->root_y);
208 /* see if the user entered the window on a certain window decoration */
209 int layout = (enter_child ? con->parent->layout : con->layout);
211 TAILQ_FOREACH(child, &(con->nodes_head), nodes)
212 if (rect_contains(child->deco_rect, event->event_x, event->event_y)) {
213 LOG("using child %p / %s instead!\n", child, child->name);
218 /* for stacked/tabbed layout we do not want to change focus when the user
219 * enters the window at the decoration of any child window. */
220 if (layout == L_STACKED || layout == L_TABBED) {
221 con = TAILQ_FIRST(&(con->parent->focus_head));
222 LOG("using focused %p / %s instead\n", con, con->name);
226 if (client->workspace != c_ws && client->workspace->output == c_ws->output) {
227 /* This can happen when a client gets assigned to a different workspace than
228 * the current one (see src/mainx.c:reparent_window). Shortly after it was created,
229 * an enter_notify will follow. */
230 DLOG("enter_notify for a client on a different workspace but the same screen, ignoring\n");
235 if (config.disable_focus_follows_mouse)
238 while (!TAILQ_EMPTY(&(next->focus_head)))
239 next = TAILQ_FIRST(&(next->focus_head));
242 x_push_changes(croot);
248 * When the user moves the mouse but does not change the active window
249 * (e.g. when having no windows opened but moving mouse on the root screen
250 * and crossing virtual screen boundaries), this callback gets called.
253 int handle_motion_notify(void *ignored, xcb_connection_t *conn, xcb_motion_notify_event_t *event) {
254 /* Skip events where the pointer was over a child window, we are only
255 * interested in events on the root window. */
256 if (event->child != 0)
260 if ((con = con_by_frame_id(event->event)) == NULL) {
261 /* TODO; handle root window: */
262 //check_crossing_screen_boundary(event->root_x, event->root_y);
266 /* see over which rect the user is */
268 TAILQ_FOREACH(current, &(con->nodes_head), nodes) {
269 if (!rect_contains(current->deco_rect, event->event_x, event->event_y))
272 /* We found the rect, let’s see if this window is focused */
273 if (TAILQ_FIRST(&(con->focus_head)) == current)
277 x_push_changes(croot);
286 * Called when the keyboard mapping changes (for example by using Xmodmap),
287 * we need to update our key bindings then (re-translate symbols).
290 int handle_mapping_notify(void *ignored, xcb_connection_t *conn, xcb_mapping_notify_event_t *event) {
291 if (event->request != XCB_MAPPING_KEYBOARD &&
292 event->request != XCB_MAPPING_MODIFIER)
295 DLOG("Received mapping_notify for keyboard or modifier mapping, re-grabbing keys\n");
296 xcb_refresh_keyboard_mapping(keysyms, event);
298 xcb_get_numlock_mask(conn);
300 ungrab_all_keys(conn);
302 grab_all_keys(conn, false);
309 * A new window appeared on the screen (=was mapped), so let’s manage it.
312 int handle_map_request(void *prophs, xcb_connection_t *conn, xcb_map_request_event_t *event) {
313 xcb_get_window_attributes_cookie_t cookie;
315 cookie = xcb_get_window_attributes_unchecked(conn, event->window);
317 DLOG("window = 0x%08x, serial is %d.\n", event->window, event->sequence);
318 add_ignore_event(event->sequence);
320 manage_window(event->window, cookie, false);
321 x_push_changes(croot);
326 * Configure requests are received when the application wants to resize windows on their own.
328 * We generate a synthethic configure notify event to signalize the client its "new" position.
331 int handle_configure_request(void *prophs, xcb_connection_t *conn, xcb_configure_request_event_t *event) {
334 DLOG("window 0x%08x wants to be at %dx%d with %dx%d\n",
335 event->window, event->x, event->y, event->width, event->height);
337 /* For unmanaged windows, we just execute the configure request. As soon as
338 * it gets mapped, we will take over anyways. */
339 if ((con = con_by_window_id(event->window)) == NULL) {
340 DLOG("Configure request for unmanaged window, can do that.\n");
345 #define COPY_MASK_MEMBER(mask_member, event_member) do { \
346 if (event->value_mask & mask_member) { \
347 mask |= mask_member; \
348 values[c++] = event->event_member; \
352 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_X, x);
353 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_Y, y);
354 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_WIDTH, width);
355 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_HEIGHT, height);
356 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_BORDER_WIDTH, border_width);
357 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_SIBLING, sibling);
358 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_STACK_MODE, stack_mode);
360 xcb_configure_window(conn, event->window, mask, values);
366 DLOG("Configure request!\n");
367 if (con_is_floating(con) && con_is_leaf(con)) {
368 /* find the height for the decorations */
369 i3Font *font = load_font(conn, config.font);
370 int deco_height = font->height + 5;
371 /* we actually need to apply the size/position changes to the *parent*
373 Rect bsr = con_border_style_rect(con);
374 if (con->border_style == BS_NORMAL)
375 bsr.height -= deco_height;
377 DLOG("Container is a floating leaf node, will do that.\n");
378 if (event->value_mask & XCB_CONFIG_WINDOW_X) {
379 con->rect.x = event->x + (-1) * bsr.x;
380 DLOG("proposed x = %d, new x is %d\n", event->x, con->rect.x);
382 if (event->value_mask & XCB_CONFIG_WINDOW_Y) {
383 con->rect.y = event->y + (-1) * bsr.y;
384 DLOG("proposed y = %d, new y is %d\n", event->y, con->rect.y);
386 if (event->value_mask & XCB_CONFIG_WINDOW_WIDTH) {
387 con->rect.width = event->width + (-1) * bsr.width;
388 DLOG("proposed width = %d, new width is %d\n", event->width, con->rect.width);
390 if (event->value_mask & XCB_CONFIG_WINDOW_HEIGHT) {
391 con->rect.height = event->height + (-1) * bsr.height;
392 DLOG("proposed height = %d, new height is %d\n", event->height, con->rect.height);
397 fake_absolute_configure_notify(con);
401 /* Dock clients can be reconfigured in their height */
403 DLOG("Reconfiguring height of this dock client\n");
405 if (!(event->value_mask & XCB_CONFIG_WINDOW_HEIGHT)) {
406 DLOG("Ignoring configure request, no height given\n");
410 client->desired_height = event->height;
411 render_workspace(conn, c_ws->output, c_ws);
417 if (client->fullscreen) {
418 DLOG("Client is in fullscreen mode\n");
420 Rect child_rect = client->container->workspace->rect;
421 child_rect.x = child_rect.y = 0;
422 fake_configure_notify(conn, child_rect, client->child);
427 fake_absolute_configure_notify(conn, client);
435 * Configuration notifies are only handled because we need to set up ignore for
436 * the following enter notify events.
439 int handle_configure_event(void *prophs, xcb_connection_t *conn, xcb_configure_notify_event_t *event) {
440 DLOG("configure_event, sequence %d\n", event->sequence);
441 /* We ignore this sequence twice because events for child and frame should be ignored */
442 add_ignore_event(event->sequence);
443 add_ignore_event(event->sequence);
449 * Gets triggered upon a RandR screen change event, that is when the user
450 * changes the screen configuration in any way (mode, position, …)
453 int handle_screen_change(void *prophs, xcb_connection_t *conn,
454 xcb_generic_event_t *e) {
455 DLOG("RandR screen change\n");
457 randr_query_outputs(conn);
459 ipc_send_event("output", I3_IPC_EVENT_OUTPUT, "{\"change\":\"unspecified\"}");
466 * Our window decorations were unmapped. That means, the window will be killed
467 * now, so we better clean up before.
470 int handle_unmap_notify_event(void *data, xcb_connection_t *conn, xcb_unmap_notify_event_t *event) {
472 /* FIXME: we cannot ignore this sequence because more UnmapNotifys with the same sequence
473 * numbers but different window IDs may follow */
474 /* we need to ignore EnterNotify events which will be generated because a
475 * different window is visible now */
476 //add_ignore_event(event->sequence);
478 DLOG("UnmapNotify for 0x%08x (received from 0x%08x), serial %d\n", event->window, event->event, event->sequence);
479 Con *con = con_by_window_id(event->window);
481 /* This could also be an UnmapNotify for the frame. We need to
482 * decrement the ignore_unmap counter. */
483 con = con_by_frame_id(event->window);
485 LOG("Not a managed window, ignoring UnmapNotify event\n");
488 if (con->ignore_unmap > 0)
490 DLOG("ignore_unmap = %d for frame of container %p\n", con->ignore_unmap, con);
494 if (con->ignore_unmap > 0) {
495 DLOG("ignore_unmap = %d, dec\n", con->ignore_unmap);
500 tree_close(con, false, false);
502 x_push_changes(croot);
506 if (client == NULL) {
507 DLOG("not a managed window. Ignoring.\n");
509 /* This was most likely the destroyed frame of a client which is
510 * currently being unmapped, so we add this sequence (again!) to
511 * the ignore list (enter_notify events will get sent for both,
512 * the child and its frame). */
513 add_ignore_event(event->sequence);
521 /* Let’s see how many clients there are left on the workspace to delete it if it’s empty */
522 bool workspace_empty = SLIST_EMPTY(&(client->workspace->focus_stack));
523 bool workspace_focused = (c_ws == client->workspace);
524 Client *to_focus = (!workspace_empty ? SLIST_FIRST(&(client->workspace->focus_stack)) : NULL);
526 /* If this workspace is currently visible, we don’t delete it */
527 if (workspace_is_visible(client->workspace))
528 workspace_empty = false;
530 if (workspace_empty) {
531 client->workspace->output = NULL;
532 ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"empty\"}");
535 /* Remove the urgency flag if set */
536 client->urgent = false;
537 workspace_update_urgent_flag(client->workspace);
546 * A destroy notify event is sent when the window is not unmapped, but
547 * immediately destroyed (for example when starting a window and immediately
548 * killing the program which started it).
550 * We just pass on the event to the unmap notify handler (by copying the
551 * important fields in the event data structure).
554 int handle_destroy_notify_event(void *data, xcb_connection_t *conn, xcb_destroy_notify_event_t *event) {
555 DLOG("destroy notify for 0x%08x, 0x%08x\n", event->event, event->window);
557 xcb_unmap_notify_event_t unmap;
558 unmap.sequence = event->sequence;
559 unmap.event = event->event;
560 unmap.window = event->window;
562 return handle_unmap_notify_event(NULL, conn, &unmap);
566 * Called when a window changes its title
569 int handle_windowname_change(void *data, xcb_connection_t *conn, uint8_t state,
570 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
572 if ((con = con_by_window_id(window)) == NULL || con->window == NULL)
575 window_update_name(con->window, prop);
577 x_push_changes(croot);
583 * Handles legacy window name updates (WM_NAME), see also src/window.c,
584 * window_update_name_legacy().
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) {
590 if ((con = con_by_window_id(window)) == NULL || con->window == NULL)
593 window_update_name_legacy(con->window, prop);
595 x_push_changes(croot);
601 * Updates the client’s WM_CLASS property
604 int handle_windowclass_change(void *data, xcb_connection_t *conn, uint8_t state,
605 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
607 if ((con = con_by_window_id(window)) == NULL || con->window == NULL)
610 window_update_class(con->window, prop);
616 * Expose event means we should redraw our windows (= title bar)
619 int handle_expose_event(void *data, xcb_connection_t *conn, xcb_expose_event_t *event) {
622 /* event->count is the number of minimum remaining expose events for this
623 * window, so we skip all events but the last one */
624 if (event->count != 0)
627 DLOG("window = %08x\n", event->window);
629 if ((parent = con_by_frame_id(event->window)) == NULL) {
630 LOG("expose event for unknown window, ignoring\n");
635 x_draw_decoration(parent);
637 TAILQ_FOREACH(con, &(parent->nodes_head), nodes) {
638 LOG("expose for con %p / %s\n", con, con->name);
640 x_draw_decoration(con);
643 /* We also need to render the decorations of other Cons nearby the Con
644 * itself to not get overlapping decorations */
645 TAILQ_FOREACH(con, &(parent->parent->nodes_head), nodes) {
646 LOG("expose for con %p / %s\n", con, con->name);
648 x_draw_decoration(con);
656 uint32_t background_color;
658 background_color = config.client.urgent.background;
659 /* Distinguish if the window is currently focused… */
660 else if (CUR_CELL != NULL && CUR_CELL->currently_focused == client)
661 background_color = config.client.focused.background;
662 /* …or if it is the focused window in a not focused container */
663 else background_color = config.client.focused_inactive.background;
665 /* Set foreground color to current focused color, line width to 2 */
666 uint32_t values[] = {background_color, 2};
667 xcb_change_gc(conn, client->titlegc, XCB_GC_FOREGROUND | XCB_GC_LINE_WIDTH, values);
669 /* Draw the border, the ±1 is for line width = 2 */
670 xcb_point_t points[] = {{1, 0}, /* left upper edge */
671 {1, client->rect.height-1}, /* left bottom edge */
672 {client->rect.width-1, client->rect.height-1}, /* right bottom edge */
673 {client->rect.width-1, 0}}; /* right upper edge */
674 xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, client->frame, client->titlegc, 4, points);
676 /* Draw a black background */
677 xcb_change_gc_single(conn, client->titlegc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#000000"));
678 if (client->titlebar_position == TITLEBAR_OFF && !client->borderless) {
679 xcb_rectangle_t crect = {1, 0, client->rect.width - (1 + 1), client->rect.height - 1};
680 xcb_poly_fill_rectangle(conn, client->frame, client->titlegc, 1, &crect);
682 xcb_rectangle_t crect = {2, 0, client->rect.width - (2 + 2), client->rect.height - 2};
683 xcb_poly_fill_rectangle(conn, client->frame, client->titlegc, 1, &crect);
692 * Handle client messages (EWMH)
695 int handle_client_message(void *data, xcb_connection_t *conn, xcb_client_message_event_t *event) {
696 LOG("ClientMessage for window 0x%08x\n", event->window);
697 if (event->type == atoms[_NET_WM_STATE]) {
698 if (event->format != 32 || event->data.data32[1] != atoms[_NET_WM_STATE_FULLSCREEN]) {
699 DLOG("atom in clientmessage is %d, fullscreen is %d\n",
700 event->data.data32[1], atoms[_NET_WM_STATE_FULLSCREEN]);
701 DLOG("not about fullscreen atom\n");
705 Con *con = con_by_window_id(event->window);
707 DLOG("Could not get window for client message\n");
711 /* Check if the fullscreen state should be toggled */
712 if ((con->fullscreen_mode != CF_NONE &&
713 (event->data.data32[0] == _NET_WM_STATE_REMOVE ||
714 event->data.data32[0] == _NET_WM_STATE_TOGGLE)) ||
715 (con->fullscreen_mode == CF_NONE &&
716 (event->data.data32[0] == _NET_WM_STATE_ADD ||
717 event->data.data32[0] == _NET_WM_STATE_TOGGLE))) {
718 DLOG("toggling fullscreen\n");
719 con_toggle_fullscreen(con);
723 x_push_changes(croot);
725 ELOG("unhandled clientmessage\n");
733 int handle_window_type(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
734 xcb_atom_t atom, xcb_get_property_reply_t *property) {
735 /* TODO: Implement this one. To do this, implement a little test program which sleep(1)s
736 before changing this property. */
737 ELOG("_NET_WM_WINDOW_TYPE changed, this is not yet implemented.\n");
743 * Handles the size hints set by a window, but currently only the part necessary for displaying
744 * clients proportionally inside their frames (mplayer for example)
746 * See ICCCM 4.1.2.3 for more details
749 int handle_normal_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
750 xcb_atom_t name, xcb_get_property_reply_t *reply) {
751 Con *con = con_by_window_id(window);
753 DLOG("Received WM_NORMAL_HINTS for unknown client\n");
757 xcb_size_hints_t size_hints;
759 //CLIENT_LOG(client);
761 /* If the hints were already in this event, use them, if not, request them */
763 xcb_get_wm_size_hints_from_reply(&size_hints, reply);
765 xcb_get_wm_normal_hints_reply(conn, xcb_get_wm_normal_hints_unchecked(conn, con->window->id), &size_hints, NULL);
767 if ((size_hints.flags & XCB_SIZE_HINT_P_MIN_SIZE)) {
768 // TODO: Minimum size is not yet implemented
769 DLOG("Minimum size: %d (width) x %d (height)\n", size_hints.min_width, size_hints.min_height);
772 bool changed = false;
773 if ((size_hints.flags & XCB_SIZE_HINT_P_RESIZE_INC)) {
774 if (size_hints.width_inc > 0 && size_hints.width_inc < 0xFFFF)
775 if (con->width_increment != size_hints.width_inc) {
776 con->width_increment = size_hints.width_inc;
779 if (size_hints.height_inc > 0 && size_hints.height_inc < 0xFFFF)
780 if (con->height_increment != size_hints.height_inc) {
781 con->height_increment = size_hints.height_inc;
786 DLOG("resize increments changed\n");
789 int base_width = 0, base_height = 0;
791 /* base_width/height are the desired size of the window.
792 We check if either the program-specified size or the program-specified
793 min-size is available */
794 if (size_hints.flags & XCB_SIZE_HINT_BASE_SIZE) {
795 base_width = size_hints.base_width;
796 base_height = size_hints.base_height;
797 } else if (size_hints.flags & XCB_SIZE_HINT_P_MIN_SIZE) {
798 /* TODO: is this right? icccm says not */
799 base_width = size_hints.min_width;
800 base_height = size_hints.min_height;
803 if (base_width != con->base_width ||
804 base_height != con->base_height) {
805 con->base_width = base_width;
806 con->base_height = base_height;
807 DLOG("client's base_height changed to %d\n", base_height);
808 DLOG("client's base_width changed to %d\n", base_width);
812 /* If no aspect ratio was set or if it was invalid, we ignore the hints */
813 if (!(size_hints.flags & XCB_SIZE_HINT_P_ASPECT) ||
814 (size_hints.min_aspect_num <= 0) ||
815 (size_hints.min_aspect_den <= 0)) {
816 goto render_and_return;
819 /* XXX: do we really use rect here, not window_rect? */
820 double width = con->rect.width - base_width;
821 double height = con->rect.height - base_height;
822 /* Convert numerator/denominator to a double */
823 double min_aspect = (double)size_hints.min_aspect_num / size_hints.min_aspect_den;
824 double max_aspect = (double)size_hints.max_aspect_num / size_hints.min_aspect_den;
826 DLOG("Aspect ratio set: minimum %f, maximum %f\n", min_aspect, max_aspect);
827 DLOG("width = %f, height = %f\n", width, height);
829 /* Sanity checks, this is user-input, in a way */
830 if (max_aspect <= 0 || min_aspect <= 0 || height == 0 || (width / height) <= 0)
831 goto render_and_return;
833 /* Check if we need to set proportional_* variables using the correct ratio */
834 if ((width / height) < min_aspect) {
835 con->proportional_width = width;
836 con->proportional_height = width / min_aspect;
837 } else if ((width / height) > max_aspect) {
838 con->proportional_width = width;
839 con->proportional_height = width / max_aspect;
840 } else goto render_and_return;
848 * Handles the WM_HINTS property for extracting the urgency state of the window.
851 int handle_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
852 xcb_atom_t name, xcb_get_property_reply_t *reply) {
853 Con *con = con_by_window_id(window);
855 DLOG("Received WM_HINTS for unknown client\n");
859 xcb_wm_hints_t hints;
862 if (!xcb_get_wm_hints_from_reply(&hints, reply))
865 if (!xcb_get_wm_hints_reply(conn, xcb_get_wm_hints_unchecked(conn, con->window->id), &hints, NULL))
869 if (!con->urgent && focused == con) {
870 DLOG("Ignoring urgency flag for current client\n");
874 /* Update the flag on the client directly */
875 con->urgent = (xcb_wm_hints_get_urgency(&hints) != 0);
877 LOG("Urgency flag changed to %d\n", con->urgent);
879 workspace_update_urgent_flag(con_get_workspace(con));
882 /* If the workspace this client is on is not visible, we need to redraw
883 * the workspace bar */
884 if (!workspace_is_visible(client->workspace)) {
885 Output *output = client->workspace->output;
886 render_workspace(conn, output, output->current_workspace);
895 * Handles the transient for hints set by a window, signalizing that this window is a popup window
896 * for some other window.
898 * See ICCCM 4.1.2.6 for more details
901 int handle_transient_for(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
902 xcb_atom_t name, xcb_get_property_reply_t *prop) {
905 if ((con = con_by_window_id(window)) == NULL || con->window == NULL) {
906 DLOG("No such window\n");
911 prop = xcb_get_property_reply(conn, xcb_get_property_unchecked(conn,
912 false, window, WM_TRANSIENT_FOR, WINDOW, 0, 32), NULL);
917 window_update_transient_for(con->window, prop);
919 // TODO: put window in floating mode if con->window->transient_for != XCB_NONE:
921 if (client->floating == FLOATING_AUTO_OFF) {
922 DLOG("This is a popup window, putting into floating\n");
923 toggle_floating_mode(conn, client, true);
931 * Handles changes of the WM_CLIENT_LEADER atom which specifies if this is a
932 * toolwindow (or similar) and to which window it belongs (logical parent).
935 int handle_clientleader_change(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
936 xcb_atom_t name, xcb_get_property_reply_t *prop) {
938 if ((con = con_by_window_id(window)) == NULL || con->window == NULL)
942 prop = xcb_get_property_reply(conn, xcb_get_property_unchecked(conn,
943 false, window, WM_CLIENT_LEADER, WINDOW, 0, 32), NULL);
948 window_update_leader(con->window, prop);