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_wm.h>
19 #include <xcb/xcb_icccm.h>
21 #include <X11/XKBlib.h>
35 /* After mapping/unmapping windows, a notify event is generated. However, we don’t want it,
36 since it’d trigger an infinite loop of switching between the different windows when
37 changing workspaces */
38 static SLIST_HEAD(ignore_head, Ignore_Event) ignore_events;
40 static void add_ignore_event(const int sequence) {
41 struct Ignore_Event *event = smalloc(sizeof(struct Ignore_Event));
43 event->sequence = sequence;
44 event->added = time(NULL);
46 LOG("Adding sequence %d to ignorelist\n", sequence);
48 SLIST_INSERT_HEAD(&ignore_events, event, ignore_events);
52 * Checks if the given sequence is ignored and returns true if so.
55 static bool event_is_ignored(const int sequence) {
56 struct Ignore_Event *event;
57 time_t now = time(NULL);
58 for (event = SLIST_FIRST(&ignore_events); event != SLIST_END(&ignore_events);) {
59 if ((now - event->added) > 5) {
60 LOG("Entry is older than five seconds, cleaning up\n");
61 struct Ignore_Event *save = event;
62 event = SLIST_NEXT(event, ignore_events);
63 SLIST_REMOVE(&ignore_events, save, Ignore_Event, ignore_events);
65 } else event = SLIST_NEXT(event, ignore_events);
68 SLIST_FOREACH(event, &ignore_events, ignore_events) {
69 if (event->sequence == sequence) {
70 LOG("Ignoring event (sequence %d)\n", sequence);
71 SLIST_REMOVE(&ignore_events, event, Ignore_Event, ignore_events);
81 * Due to bindings like Mode_switch + <a>, we need to bind some keys in XCB_GRAB_MODE_SYNC.
82 * Therefore, we just replay all key presses.
85 int handle_key_release(void *ignored, xcb_connection_t *conn, xcb_key_release_event_t *event) {
86 LOG("got key release, just passing\n");
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\n", event->detail);
100 /* We need to get the keysym group (There are group 1 to group 4, each holding
101 two keysyms (without shift and with shift) using Xkb because X fails to
102 provide them reliably (it works in Xephyr, it does not in real X) */
104 if (XkbGetState(xkbdpy, XkbUseCoreKbd, &state) == Success && (state.group+1) == 2)
107 LOG("state %d\n", event->state);
109 /* Remove the numlock bit, all other bits are modifiers we can bind to */
110 uint16_t state_filtered = event->state & ~XCB_MOD_MASK_LOCK;
112 /* Find the binding */
114 TAILQ_FOREACH(bind, &bindings, bindings)
115 if (bind->keycode == event->detail && bind->mods == state_filtered)
118 /* No match? Then it was an actively grabbed key, that is with Mode_switch, and
119 the user did not press Mode_switch, so just pass it… */
120 if (bind == TAILQ_END(&bindings)) {
121 xcb_allow_events(conn, ReplayKeyboard, event->time);
126 parse_command(conn, bind->command);
127 if (event->state & 0x2) {
128 LOG("Mode_switch -> allow_events(SyncKeyboard)\n");
129 xcb_allow_events(conn, SyncKeyboard, event->time);
137 * When the user moves the mouse pointer onto a window, this callback gets called.
140 int handle_enter_notify(void *ignored, xcb_connection_t *conn, xcb_enter_notify_event_t *event) {
141 LOG("enter_notify for %08x, mode = %d, detail %d, serial %d\n", event->event, event->mode, event->detail, event->sequence);
142 if (event->mode != XCB_NOTIFY_MODE_NORMAL) {
143 LOG("This was not a normal notify, ignoring\n");
146 /* Some events are not interesting, because they were not generated actively by the
147 user, but be reconfiguration of windows */
148 if (event_is_ignored(event->sequence))
151 /* This was either a focus for a client’s parent (= titlebar)… */
152 Client *client = table_get(byParent, event->event);
153 /* …or the client itself */
155 client = table_get(byChild, event->event);
157 /* If not, then the user moved his cursor to the root window. In that case, we adjust c_ws */
158 if (client == NULL) {
159 LOG("Getting screen at %d x %d\n", event->root_x, event->root_y);
160 i3Screen *screen = get_screen_containing(event->root_x, event->root_y);
161 if (screen == NULL) {
162 LOG("ERROR: No such screen\n");
165 c_ws = &workspaces[screen->current_workspace];
166 LOG("We're now on virtual screen number %d\n", screen->num);
170 /* Do plausibility checks: This event may be useless for us if it occurs on a window
171 which is in a stacked container but not the focused one */
172 if (client->container != NULL &&
173 client->container->mode == MODE_STACK &&
174 client->container->currently_focused != client) {
175 LOG("Plausibility check says: no\n");
179 set_focus(conn, client);
185 * Checks if the button press was on a stack window, handles focus setting and returns true
186 * if so, or false otherwise.
189 static bool button_press_stackwin(xcb_connection_t *conn, xcb_button_press_event_t *event) {
190 struct Stack_Window *stack_win;
191 SLIST_FOREACH(stack_win, &stack_wins, stack_windows)
192 if (stack_win->window == event->event) {
193 /* A stack window was clicked. We calculate the destination client by
194 dividing the Y position of the event through the height of a window
195 decoration and then set the focus to this client. */
196 i3Font *font = load_font(conn, config.font);
197 int decoration_height = (font->height + 2 + 2);
198 int destination = (event->event_y / decoration_height),
202 LOG("Click on stack_win for client %d\n", destination);
203 CIRCLEQ_FOREACH(client, &(stack_win->container->clients), clients)
204 if (c++ == destination) {
205 set_focus(conn, client);
216 * Checks if the button press was on a bar, switches to the workspace and returns true
217 * if so, or false otherwise.
220 static bool button_press_bar(xcb_connection_t *conn, xcb_button_press_event_t *event) {
222 TAILQ_FOREACH(screen, virtual_screens, screens)
223 if (screen->bar == event->event) {
224 LOG("Click on a bar\n");
225 i3Font *font = load_font(conn, config.font);
226 int workspace = event->event_x / (font->height + 6),
228 /* Because workspaces can be on different screens, we need to loop
229 through all of them and decide to count it based on its ->screen */
230 for (int i = 0; i < 10; i++)
231 if ((workspaces[i].screen == screen) && (c++ == workspace)) {
232 show_workspace(conn, i+1);
241 int handle_button_press(void *ignored, xcb_connection_t *conn, xcb_button_press_event_t *event) {
242 LOG("button press!\n");
243 /* This was either a focus for a client’s parent (= titlebar)… */
244 Client *client = table_get(byChild, event->event);
245 bool border_click = false;
246 if (client == NULL) {
247 client = table_get(byParent, event->event);
250 if (client == NULL) {
251 /* The client was neither on a client’s titlebar nor on a client itself, maybe on a stack_window? */
252 if (button_press_stackwin(conn, event))
256 if (button_press_bar(conn, event))
259 LOG("Could not handle this button press\n");
263 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
264 xcb_screen_t *root_screen = xcb_setup_roots_iterator(xcb_get_setup(conn)).data;
266 /* Set focus in any case */
267 set_focus(conn, client);
269 /* Let’s see if this was on the borders (= resize). If not, we’re done */
270 LOG("press button on x=%d, y=%d\n", event->event_x, event->event_y);
272 Container *con = client->container,
275 enum { O_HORIZONTAL, O_VERTICAL } orientation = O_VERTICAL;
279 LOG("dock. done.\n");
280 xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time);
285 LOG("event->event_x = %d, client->rect.width = %d\n", event->event_x, client->rect.width);
288 LOG("client. done.\n");
289 xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time);
294 /* Don’t handle events inside the titlebar, only borders are interesting */
295 i3Font *font = load_font(conn, config.font);
296 if (event->event_y >= 2 && event->event_y <= (font->height + 2 + 2)) {
297 LOG("click on titlebar\n");
301 if (event->event_y < 2) {
302 /* This was a press on the top border */
305 first = con->workspace->table[con->col][con->row-1];
307 orientation = O_HORIZONTAL;
308 } else if (event->event_y >= (client->rect.height - 2)) {
310 if (con->row == (con->workspace->rows-1))
313 second = con->workspace->table[con->col][con->row+1];
314 orientation = O_HORIZONTAL;
315 } else if (event->event_x <= 2) {
319 first = con->workspace->table[con->col-1][con->row];
321 } else if (event->event_x > 2) {
323 if (con->col == (con->workspace->cols-1))
326 second = con->workspace->table[con->col+1][con->row];
329 /* FIXME: horizontal resizing causes empty spaces to exist */
330 if (orientation == O_HORIZONTAL) {
331 LOG("Sorry, horizontal resizing is not yet activated due to creating layout bugs."
332 "If you are brave, enable the code for yourself and try fixing it.\n");
339 mask = XCB_CW_OVERRIDE_REDIRECT;
342 /* Open a new window, the resizebar. Grab the pointer and move the window around
343 as the user moves the pointer. */
344 Rect grabrect = {0, 0, root_screen->width_in_pixels, root_screen->height_in_pixels};
345 xcb_window_t grabwin = create_window(conn, grabrect, XCB_WINDOW_CLASS_INPUT_ONLY, -1, mask, values);
348 if (orientation == O_VERTICAL) {
349 helprect.x = event->root_x;
352 helprect.height = root_screen->height_in_pixels; /* this has to be the cell’s height */
353 new_position = event->root_x;
356 helprect.y = event->root_y;
357 helprect.width = root_screen->width_in_pixels; /* this has to be the cell’s width */
359 new_position = event->root_y;
362 mask = XCB_CW_BACK_PIXEL;
363 values[0] = get_colorpixel(conn, "#4c7899");
365 mask |= XCB_CW_OVERRIDE_REDIRECT;
368 xcb_window_t helpwin = create_window(conn, helprect, XCB_WINDOW_CLASS_INPUT_OUTPUT,
369 (orientation == O_VERTICAL ?
370 XCB_CURSOR_SB_V_DOUBLE_ARROW :
371 XCB_CURSOR_SB_H_DOUBLE_ARROW), mask, values);
373 xcb_circulate_window(conn, XCB_CIRCULATE_RAISE_LOWEST, helpwin);
375 xcb_grab_pointer(conn, false, root, XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_POINTER_MOTION,
376 XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC, grabwin, XCB_NONE, XCB_CURRENT_TIME);
380 xcb_generic_event_t *inside_event;
381 /* I’ve always wanted to have my own eventhandler… */
382 while ((inside_event = xcb_wait_for_event(conn))) {
383 /* Same as get_event_handler in xcb */
384 int nr = inside_event->response_type;
386 /* An error occured */
387 handle_event(NULL, conn, inside_event);
392 nr &= XCB_EVENT_RESPONSE_TYPE_MASK;
395 /* Check if we need to escape this loop */
396 if (nr == XCB_BUTTON_RELEASE)
400 case XCB_MOTION_NOTIFY:
401 if (orientation == O_VERTICAL) {
402 values[0] = new_position = ((xcb_motion_notify_event_t*)inside_event)->root_x;
403 xcb_configure_window(conn, helpwin, XCB_CONFIG_WINDOW_X, values);
405 values[0] = new_position = ((xcb_motion_notify_event_t*)inside_event)->root_y;
406 xcb_configure_window(conn, helpwin, XCB_CONFIG_WINDOW_Y, values);
412 LOG("Passing to original handler\n");
413 /* Use original handler */
414 xcb_event_handle(&evenths, inside_event);
420 xcb_ungrab_pointer(conn, XCB_CURRENT_TIME);
421 xcb_destroy_window(conn, helpwin);
422 xcb_destroy_window(conn, grabwin);
425 Workspace *ws = con->workspace;
426 if (orientation == O_VERTICAL) {
427 LOG("Resize was from X = %d to X = %d\n", event->root_x, new_position);
428 if (event->root_x == new_position) {
429 LOG("Nothing changed, not updating anything\n");
433 /* Convert 0 (for default width_factor) to actual numbers */
434 if (first->width_factor == 0)
435 first->width_factor = ((float)ws->rect.width / ws->cols) / ws->rect.width;
436 if (second->width_factor == 0)
437 second->width_factor = ((float)ws->rect.width / ws->cols) / ws->rect.width;
439 first->width_factor *= (float)(first->width + (new_position - event->root_x)) / first->width;
440 second->width_factor *= (float)(second->width - (new_position - event->root_x)) / second->width;
442 LOG("Resize was from Y = %d to Y = %d\n", event->root_y, new_position);
443 if (event->root_y == new_position) {
444 LOG("Nothing changed, not updating anything\n");
448 /* Convert 0 (for default height_factor) to actual numbers */
449 if (first->height_factor == 0)
450 first->height_factor = ((float)ws->rect.height / ws->rows) / ws->rect.height;
451 if (second->height_factor == 0)
452 second->height_factor = ((float)ws->rect.height / ws->rows) / ws->rect.height;
454 first->height_factor *= (float)(first->height + (new_position - event->root_y)) / first->height;
455 second->height_factor *= (float)(second->height - (new_position - event->root_y)) / second->height;
464 * A new window appeared on the screen (=was mapped), so let’s manage it.
467 int handle_map_request(void *prophs, xcb_connection_t *conn, xcb_map_request_event_t *event) {
468 xcb_get_window_attributes_cookie_t cookie;
469 xcb_get_window_attributes_reply_t *reply;
471 cookie = xcb_get_window_attributes_unchecked(conn, event->window);
473 if ((reply = xcb_get_window_attributes_reply(conn, cookie, NULL)) == NULL) {
474 LOG("Could not get window attributes\n");
478 window_attributes_t wa = { TAG_VALUE };
479 LOG("override_redirect = %d\n", reply->override_redirect);
480 wa.u.override_redirect = reply->override_redirect;
481 LOG("window = 0x%08x, serial is %d.\n", event->window, event->sequence);
482 add_ignore_event(event->sequence);
484 manage_window(prophs, conn, event->window, wa);
489 * Configure requests are received when the application wants to resize windows on their own.
491 * We generate a synthethic configure notify event to signalize the client its "new" position.
494 int handle_configure_request(void *prophs, xcb_connection_t *conn, xcb_configure_request_event_t *event) {
495 LOG("configure-request, serial %d\n", event->sequence);
496 LOG("event->window = %08x\n", event->window);
497 LOG("application wants to be at %dx%d with %dx%d\n", event->x, event->y, event->width, event->height);
499 Client *client = table_get(byChild, event->window);
500 if (client == NULL) {
501 LOG("This client is not mapped, so we don't care and just tell the client that he will get its size\n");
502 Rect rect = {event->x, event->y, event->width, event->height};
503 fake_configure_notify(conn, rect, event->window);
507 fake_configure_notify(conn, client->child_rect, client->child);
513 * Configuration notifies are only handled because we need to set up ignore for the following
514 * enter notify events
517 int handle_configure_event(void *prophs, xcb_connection_t *conn, xcb_configure_notify_event_t *event) {
518 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
520 LOG("handle_configure_event for window %08x\n", event->window);
521 LOG("event->type = %d, \n", event->response_type);
522 LOG("event->x = %d, ->y = %d, ->width = %d, ->height = %d\n", event->x, event->y, event->width, event->height);
523 add_ignore_event(event->sequence);
525 if (event->event == root) {
526 LOG("reconfigure of the root window, need to xinerama\n");
527 /* FIXME: Somehow, this is occuring too often. Therefore, we check for 0/0,
528 but is there a better way? */
529 if (event->x == 0 && event->y == 0)
530 xinerama_requery_screens(conn);
538 * Our window decorations were unmapped. That means, the window will be killed now,
539 * so we better clean up before.
542 int handle_unmap_notify_event(void *data, xcb_connection_t *conn, xcb_unmap_notify_event_t *event) {
543 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
545 add_ignore_event(event->sequence);
547 Client *client = table_get(byChild, event->window);
548 /* First, we need to check if the client is awaiting an unmap-request which
549 was generated by us reparenting the window. In that case, we just ignore it. */
550 if (client != NULL && client->awaiting_useless_unmap) {
551 LOG("Dropping this unmap request, it was generated by reparenting\n");
552 client->awaiting_useless_unmap = false;
556 LOG("event->window = %08x, event->event = %08x\n", event->window, event->event);
557 LOG("UnmapNotify for 0x%08x (received from 0x%08x)\n", event->window, event->event);
558 if (client == NULL) {
559 LOG("not a managed window. Ignoring.\n");
563 client = table_remove(byChild, event->window);
565 if (client->name != NULL)
568 if (client->container != NULL) {
569 Container *con = client->container;
571 /* If this was the fullscreen client, we need to unset it */
572 if (client->fullscreen)
573 con->workspace->fullscreen_client = NULL;
575 /* Remove the client from the list of clients */
576 remove_client_from_container(conn, client, con);
578 /* Remove from the focus stack */
579 LOG("Removing from focus stack\n");
580 SLIST_REMOVE(&(con->workspace->focus_stack), client, Client, focus_clients);
582 /* Set focus to the last focused client in this container */
583 con->currently_focused = NULL;
584 Client *focus_client;
585 SLIST_FOREACH(focus_client, &(con->workspace->focus_stack), focus_clients)
586 if (focus_client->container == con) {
587 con->currently_focused = focus_client;
588 /* Only if this is the active container, we need to really change focus */
590 set_focus(conn, focus_client);
596 LOG("Removing from dock clients\n");
597 SLIST_REMOVE(&(client->workspace->dock_clients), client, Client, dock_clients);
600 LOG("child of 0x%08x.\n", client->frame);
601 xcb_reparent_window(conn, client->child, root, 0, 0);
602 xcb_destroy_window(conn, client->frame);
604 table_remove(byParent, client->frame);
606 if (client->container != NULL)
607 cleanup_table(conn, client->container->workspace);
617 * Called when a window changes its title
620 int handle_windowname_change(void *data, xcb_connection_t *conn, uint8_t state,
621 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
622 LOG("window's name changed.\n");
623 if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
624 LOG("_NET_WM_NAME not specified, not changing\n");
627 Client *client = table_get(byChild, window);
631 /* Save the old pointer to make the update atomic */
634 asprintf(&new_name, "%.*s", xcb_get_property_value_length(prop), (char*)xcb_get_property_value(prop));
635 /* Convert it to UCS-2 here for not having to convert it later every time we want to pass it to X */
636 char *ucs2_name = convert_utf8_to_ucs2(new_name, &new_len);
637 LOG("Name should change to \"%s\"\n", new_name);
640 /* Check if they are the same and don’t update if so.
641 Note the use of new_len * 2 to check all bytes as each glyph takes 2 bytes.
642 Also note the use of memcmp() instead of strncmp() because the latter stops on nullbytes,
643 but UCS-2 uses nullbytes to fill up glyphs which only use one byte. */
644 if ((new_len == client->name_len) &&
645 (client->name != NULL) &&
646 (memcmp(client->name, ucs2_name, new_len * 2) == 0)) {
647 LOG("Name did not change, not updating\n");
652 char *old_name = client->name;
653 client->name = ucs2_name;
654 client->name_len = new_len;
655 client->uses_net_wm_name = true;
657 if (old_name != NULL)
660 /* If the client is a dock window, we don’t need to render anything */
664 if (client->container->mode == MODE_STACK)
665 render_container(conn, client->container);
666 else decorate_window(conn, client, client->frame, client->titlegc, 0);
673 * We handle legacy window names (titles) which are in COMPOUND_TEXT encoding. However, we
674 * just pass them along, so when containing non-ASCII characters, those will be rendering
675 * incorrectly. In order to correctly render unicode window titles in i3, an application
676 * has to set _NET_WM_NAME, which is in UTF-8 encoding.
678 * On every update, a message is put out to the user, so he may improve the situation and
679 * update applications which display filenames in their title to correctly use
680 * _NET_WM_NAME and therefore support unicode.
683 int handle_windowname_change_legacy(void *data, xcb_connection_t *conn, uint8_t state,
684 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
685 LOG("window's name changed (legacy).\n");
686 if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
687 LOG("prop == NULL\n");
690 Client *client = table_get(byChild, window);
694 if (client->uses_net_wm_name) {
695 LOG("This client is capable of _NET_WM_NAME, ignoring legacy name\n");
699 /* Save the old pointer to make the update atomic */
701 asprintf(&new_name, "%.*s", xcb_get_property_value_length(prop), (char*)xcb_get_property_value(prop));
702 /* Convert it to UCS-2 here for not having to convert it later every time we want to pass it to X */
703 LOG("Name should change to \"%s\"\n", new_name);
705 /* Check if they are the same and don’t update if so. */
706 if (client->name != NULL &&
707 strlen(new_name) == strlen(client->name) &&
708 strcmp(client->name, new_name) == 0) {
709 LOG("Name did not change, not updating\n");
714 LOG("Using legacy window title. Note that in order to get Unicode window titles in i3,"
715 "the application has to set _NET_WM_NAME which is in UTF-8 encoding.\n");
717 char *old_name = client->name;
718 client->name = new_name;
719 client->name_len = -1;
721 if (old_name != NULL)
724 /* If the client is a dock window, we don’t need to render anything */
728 if (client->container->mode == MODE_STACK)
729 render_container(conn, client->container);
730 else decorate_window(conn, client, client->frame, client->titlegc, 0);
737 * Expose event means we should redraw our windows (= title bar)
740 int handle_expose_event(void *data, xcb_connection_t *conn, xcb_expose_event_t *event) {
741 /* event->count is the number of minimum remaining expose events for this window, so we
742 skip all events but the last one */
743 if (event->count != 0)
745 LOG("window = %08x\n", event->window);
747 Client *client = table_get(byParent, event->window);
748 if (client == NULL) {
749 /* There was no client in the table, so this is probably an expose event for
750 one of our stack_windows. */
751 struct Stack_Window *stack_win;
752 SLIST_FOREACH(stack_win, &stack_wins, stack_windows)
753 if (stack_win->window == event->window) {
754 render_container(conn, stack_win->container);
758 /* …or one of the bars? */
760 TAILQ_FOREACH(screen, virtual_screens, screens) {
761 if (screen->bar == event->window) {
768 LOG("got client %s\n", client->name);
770 LOG("this is a dock\n");
774 if (client->container->mode != MODE_STACK)
775 decorate_window(conn, client, client->frame, client->titlegc, 0);
777 uint32_t background_color;
778 /* Distinguish if the window is currently focused… */
779 if (CUR_CELL->currently_focused == client)
780 background_color = get_colorpixel(conn, "#285577");
781 /* …or if it is the focused window in a not focused container */
782 else background_color = get_colorpixel(conn, "#555555");
784 /* Set foreground color to current focused color, line width to 2 */
785 uint32_t values[] = {background_color, 2};
786 xcb_change_gc(conn, client->titlegc, XCB_GC_FOREGROUND | XCB_GC_LINE_WIDTH, values);
788 /* Draw the border, the ±1 is for line width = 2 */
789 xcb_point_t points[] = {{1, 0}, /* left upper edge */
790 {1, client->rect.height-1}, /* left bottom edge */
791 {client->rect.width-1, client->rect.height-1}, /* right bottom edge */
792 {client->rect.width-1, 0}}; /* right upper edge */
793 xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, client->frame, client->titlegc, 4, points);
795 /* Draw a black background */
796 xcb_change_gc_single(conn, client->titlegc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#000000"));
797 xcb_rectangle_t crect = {2, 0, client->rect.width - (2 + 2), client->rect.height - 2};
798 xcb_poly_fill_rectangle(conn, client->frame, client->titlegc, 1, &crect);
805 * Handle client messages (EWMH)
808 int handle_client_message(void *data, xcb_connection_t *conn, xcb_client_message_event_t *event) {
809 LOG("client_message\n");
811 if (event->type == atoms[_NET_WM_STATE]) {
812 if (event->format != 32 || event->data.data32[1] != atoms[_NET_WM_STATE_FULLSCREEN])
817 Client *client = table_get(byChild, event->window);
821 /* Check if the fullscreen state should be toggled */
822 if ((client->fullscreen &&
823 (event->data.data32[0] == _NET_WM_STATE_REMOVE ||
824 event->data.data32[0] == _NET_WM_STATE_TOGGLE)) ||
825 (!client->fullscreen &&
826 (event->data.data32[0] == _NET_WM_STATE_ADD ||
827 event->data.data32[0] == _NET_WM_STATE_TOGGLE)))
828 toggle_fullscreen(conn, client);
830 LOG("unhandled clientmessage\n");
837 int handle_window_type(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
838 xcb_atom_t atom, xcb_get_property_reply_t *property) {
839 /* TODO: Implement this one. To do this, implement a little test program which sleep(1)s
840 before changing this property. */
841 LOG("_NET_WM_WINDOW_TYPE changed, this is not yet implemented.\n");
846 * Handles the size hints set by a window, but currently only the part necessary for displaying
847 * clients proportionally inside their frames (mplayer for example)
849 * See ICCCM 4.1.2.3 for more details
852 int handle_normal_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
853 xcb_atom_t name, xcb_get_property_reply_t *reply) {
854 LOG("handle_normal_hints\n");
855 Client *client = table_get(byChild, window);
856 if (client == NULL) {
857 LOG("No such client\n");
860 xcb_size_hints_t size_hints;
862 /* If the hints were already in this event, use them, if not, request them */
864 xcb_get_wm_size_hints_from_reply(&size_hints, reply);
866 xcb_get_wm_normal_hints_reply(conn, xcb_get_wm_normal_hints_unchecked(conn, client->child), &size_hints, NULL);
868 /* If no aspect ratio was set or if it was invalid, we ignore the hints */
869 if (!(size_hints.flags & XCB_SIZE_HINT_P_ASPECT) ||
870 (size_hints.min_aspect_num <= 0) ||
871 (size_hints.min_aspect_den <= 0)) {
872 LOG("No aspect ratio set, ignoring\n");
876 LOG("window is %08x / %s\n", client->child, client->name);
878 int base_width = 0, base_height = 0,
879 min_width = 0, min_height = 0;
881 /* base_width/height are the desired size of the window.
882 We check if either the program-specified size or the program-specified
883 min-size is available */
884 if (size_hints.flags & XCB_SIZE_HINT_P_SIZE) {
885 base_width = size_hints.base_width;
886 base_height = size_hints.base_height;
887 } else if (size_hints.flags & XCB_SIZE_HINT_P_MIN_SIZE) {
888 base_width = size_hints.min_width;
889 base_height = size_hints.min_height;
892 if (size_hints.flags & XCB_SIZE_HINT_P_MIN_SIZE) {
893 min_width = size_hints.min_width;
894 min_height = size_hints.min_height;
895 } else if (size_hints.flags & XCB_SIZE_HINT_P_SIZE) {
896 min_width = size_hints.base_width;
897 min_height = size_hints.base_height;
900 double width = client->rect.width - base_width;
901 double height = client->rect.height - base_height;
902 /* Convert numerator/denominator to a double */
903 double min_aspect = (double)size_hints.min_aspect_num / size_hints.min_aspect_den;
904 double max_aspect = (double)size_hints.max_aspect_num / size_hints.min_aspect_den;
906 LOG("min_aspect = %f, max_aspect = %f\n", min_aspect, max_aspect);
907 LOG("width = %f, height = %f\n", width, height);
909 /* Sanity checks, this is user-input, in a way */
910 if (max_aspect <= 0 || min_aspect <= 0 || height == 0 || (width / height) <= 0)
913 /* Check if we need to set proportional_* variables using the correct ratio */
914 if ((width / height) < min_aspect) {
915 client->proportional_width = width;
916 client->proportional_height = width / min_aspect;
917 } else if ((width / height) > max_aspect) {
918 client->proportional_width = width;
919 client->proportional_height = width / max_aspect;
922 client->force_reconfigure = true;
924 if (client->container != NULL) {
925 render_container(conn, client->container);