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_numlock_mask | 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 /* Check for stack windows */
158 if (client == NULL) {
159 struct Stack_Window *stack_win;
160 SLIST_FOREACH(stack_win, &stack_wins, stack_windows)
161 if (stack_win->window == event->event) {
162 client = stack_win->container->currently_focused;
168 /* If not, then the user moved his cursor to the root window. In that case, we adjust c_ws */
169 if (client == NULL) {
170 LOG("Getting screen at %d x %d\n", event->root_x, event->root_y);
171 i3Screen *screen = get_screen_containing(event->root_x, event->root_y);
172 if (screen == NULL) {
173 LOG("ERROR: No such screen\n");
176 c_ws = &workspaces[screen->current_workspace];
177 LOG("We're now on virtual screen number %d\n", screen->num);
181 /* Do plausibility checks: This event may be useless for us if it occurs on a window
182 which is in a stacked container but not the focused one */
183 if (client->container != NULL &&
184 client->container->mode == MODE_STACK &&
185 client->container->currently_focused != client) {
186 LOG("Plausibility check says: no\n");
190 set_focus(conn, client);
196 * Checks if the button press was on a stack window, handles focus setting and returns true
197 * if so, or false otherwise.
200 static bool button_press_stackwin(xcb_connection_t *conn, xcb_button_press_event_t *event) {
201 struct Stack_Window *stack_win;
202 SLIST_FOREACH(stack_win, &stack_wins, stack_windows) {
203 if (stack_win->window != event->event)
206 /* A stack window was clicked, we check if it was button4 or button5
207 which are scroll up / scroll down. */
208 if (event->detail == XCB_BUTTON_INDEX_4 || event->detail == XCB_BUTTON_INDEX_5) {
209 direction_t direction = (event->detail == XCB_BUTTON_INDEX_4 ? D_UP : D_DOWN);
210 focus_window_in_container(conn, CUR_CELL, direction);
214 /* It was no scrolling, so we calculate the destination client by
215 dividing the Y position of the event through the height of a window
216 decoration and then set the focus to this client. */
217 i3Font *font = load_font(conn, config.font);
218 int decoration_height = (font->height + 2 + 2);
219 int destination = (event->event_y / decoration_height),
223 LOG("Click on stack_win for client %d\n", destination);
224 CIRCLEQ_FOREACH(client, &(stack_win->container->clients), clients)
225 if (c++ == destination) {
226 set_focus(conn, client);
237 * Checks if the button press was on a bar, switches to the workspace and returns true
238 * if so, or false otherwise.
241 static bool button_press_bar(xcb_connection_t *conn, xcb_button_press_event_t *event) {
243 TAILQ_FOREACH(screen, virtual_screens, screens) {
244 if (screen->bar != event->event)
247 LOG("Click on a bar\n");
249 /* Check if the button was one of button4 or button5 (scroll up / scroll down) */
250 if (event->detail == XCB_BUTTON_INDEX_4 || event->detail == XCB_BUTTON_INDEX_5) {
251 int dest_workspace = (event->detail == XCB_BUTTON_INDEX_4 ?
254 if ((dest_workspace >= 0) && (dest_workspace < 10))
255 show_workspace(conn, dest_workspace+1);
258 i3Font *font = load_font(conn, config.font);
259 int workspace = event->event_x / (font->height + 6),
261 /* Because workspaces can be on different screens, we need to loop
262 through all of them and decide to count it based on its ->screen */
263 for (int i = 0; i < 10; i++)
264 if ((workspaces[i].screen == screen) && (c++ == workspace)) {
265 show_workspace(conn, i+1);
274 int handle_button_press(void *ignored, xcb_connection_t *conn, xcb_button_press_event_t *event) {
275 LOG("button press!\n");
276 /* This was either a focus for a client’s parent (= titlebar)… */
277 Client *client = table_get(byChild, event->event);
278 bool border_click = false;
279 if (client == NULL) {
280 client = table_get(byParent, event->event);
283 if (client == NULL) {
284 /* The client was neither on a client’s titlebar nor on a client itself, maybe on a stack_window? */
285 if (button_press_stackwin(conn, event))
289 if (button_press_bar(conn, event))
292 LOG("Could not handle this button press\n");
296 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
297 xcb_screen_t *root_screen = xcb_setup_roots_iterator(xcb_get_setup(conn)).data;
299 /* Set focus in any case */
300 set_focus(conn, client);
302 /* Let’s see if this was on the borders (= resize). If not, we’re done */
303 LOG("press button on x=%d, y=%d\n", event->event_x, event->event_y);
305 Container *con = client->container,
308 enum { O_HORIZONTAL, O_VERTICAL } orientation = O_VERTICAL;
312 LOG("dock. done.\n");
313 xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time);
318 LOG("event->event_x = %d, client->rect.width = %d\n", event->event_x, client->rect.width);
321 LOG("client. done.\n");
322 xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time);
327 /* Don’t handle events inside the titlebar, only borders are interesting */
328 i3Font *font = load_font(conn, config.font);
329 if (event->event_y >= 2 && event->event_y <= (font->height + 2 + 2)) {
330 LOG("click on titlebar\n");
334 if (event->event_y < 2) {
335 /* This was a press on the top border */
338 first = con->workspace->table[con->col][con->row-1];
340 orientation = O_HORIZONTAL;
341 } else if (event->event_y >= (client->rect.height - 2)) {
343 if (con->row == (con->workspace->rows-1))
346 second = con->workspace->table[con->col][con->row+1];
347 orientation = O_HORIZONTAL;
348 } else if (event->event_x <= 2) {
352 first = con->workspace->table[con->col-1][con->row];
354 } else if (event->event_x > 2) {
356 if (con->col == (con->workspace->cols-1))
359 second = con->workspace->table[con->col+1][con->row];
362 /* FIXME: horizontal resizing causes empty spaces to exist */
363 if (orientation == O_HORIZONTAL) {
364 LOG("Sorry, horizontal resizing is not yet activated due to creating layout bugs."
365 "If you are brave, enable the code for yourself and try fixing it.\n");
372 mask = XCB_CW_OVERRIDE_REDIRECT;
375 /* Open a new window, the resizebar. Grab the pointer and move the window around
376 as the user moves the pointer. */
377 Rect grabrect = {0, 0, root_screen->width_in_pixels, root_screen->height_in_pixels};
378 xcb_window_t grabwin = create_window(conn, grabrect, XCB_WINDOW_CLASS_INPUT_ONLY, -1, mask, values);
381 if (orientation == O_VERTICAL) {
382 helprect.x = event->root_x;
385 helprect.height = root_screen->height_in_pixels; /* this has to be the cell’s height */
386 new_position = event->root_x;
389 helprect.y = event->root_y;
390 helprect.width = root_screen->width_in_pixels; /* this has to be the cell’s width */
392 new_position = event->root_y;
395 mask = XCB_CW_BACK_PIXEL;
396 values[0] = get_colorpixel(conn, "#4c7899");
398 mask |= XCB_CW_OVERRIDE_REDIRECT;
401 xcb_window_t helpwin = create_window(conn, helprect, XCB_WINDOW_CLASS_INPUT_OUTPUT,
402 (orientation == O_VERTICAL ?
403 XCB_CURSOR_SB_V_DOUBLE_ARROW :
404 XCB_CURSOR_SB_H_DOUBLE_ARROW), mask, values);
406 xcb_circulate_window(conn, XCB_CIRCULATE_RAISE_LOWEST, helpwin);
408 xcb_grab_pointer(conn, false, root, XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_POINTER_MOTION,
409 XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC, grabwin, XCB_NONE, XCB_CURRENT_TIME);
413 xcb_generic_event_t *inside_event;
414 /* I’ve always wanted to have my own eventhandler… */
415 while ((inside_event = xcb_wait_for_event(conn))) {
416 /* Same as get_event_handler in xcb */
417 int nr = inside_event->response_type;
419 /* An error occured */
420 handle_event(NULL, conn, inside_event);
425 nr &= XCB_EVENT_RESPONSE_TYPE_MASK;
428 /* Check if we need to escape this loop */
429 if (nr == XCB_BUTTON_RELEASE)
433 case XCB_MOTION_NOTIFY:
434 if (orientation == O_VERTICAL) {
435 values[0] = new_position = ((xcb_motion_notify_event_t*)inside_event)->root_x;
436 xcb_configure_window(conn, helpwin, XCB_CONFIG_WINDOW_X, values);
438 values[0] = new_position = ((xcb_motion_notify_event_t*)inside_event)->root_y;
439 xcb_configure_window(conn, helpwin, XCB_CONFIG_WINDOW_Y, values);
445 LOG("Passing to original handler\n");
446 /* Use original handler */
447 xcb_event_handle(&evenths, inside_event);
453 xcb_ungrab_pointer(conn, XCB_CURRENT_TIME);
454 xcb_destroy_window(conn, helpwin);
455 xcb_destroy_window(conn, grabwin);
458 Workspace *ws = con->workspace;
459 if (orientation == O_VERTICAL) {
460 LOG("Resize was from X = %d to X = %d\n", event->root_x, new_position);
461 if (event->root_x == new_position) {
462 LOG("Nothing changed, not updating anything\n");
466 /* Convert 0 (for default width_factor) to actual numbers */
467 if (first->width_factor == 0)
468 first->width_factor = ((float)ws->rect.width / ws->cols) / ws->rect.width;
469 if (second->width_factor == 0)
470 second->width_factor = ((float)ws->rect.width / ws->cols) / ws->rect.width;
472 first->width_factor *= (float)(first->width + (new_position - event->root_x)) / first->width;
473 second->width_factor *= (float)(second->width - (new_position - event->root_x)) / second->width;
475 LOG("Resize was from Y = %d to Y = %d\n", event->root_y, new_position);
476 if (event->root_y == new_position) {
477 LOG("Nothing changed, not updating anything\n");
481 /* Convert 0 (for default height_factor) to actual numbers */
482 if (first->height_factor == 0)
483 first->height_factor = ((float)ws->rect.height / ws->rows) / ws->rect.height;
484 if (second->height_factor == 0)
485 second->height_factor = ((float)ws->rect.height / ws->rows) / ws->rect.height;
487 first->height_factor *= (float)(first->height + (new_position - event->root_y)) / first->height;
488 second->height_factor *= (float)(second->height - (new_position - event->root_y)) / second->height;
497 * A new window appeared on the screen (=was mapped), so let’s manage it.
500 int handle_map_request(void *prophs, xcb_connection_t *conn, xcb_map_request_event_t *event) {
501 xcb_get_window_attributes_cookie_t cookie;
502 xcb_get_window_attributes_reply_t *reply;
504 cookie = xcb_get_window_attributes_unchecked(conn, event->window);
506 if ((reply = xcb_get_window_attributes_reply(conn, cookie, NULL)) == NULL) {
507 LOG("Could not get window attributes\n");
511 window_attributes_t wa = { TAG_VALUE };
512 LOG("override_redirect = %d\n", reply->override_redirect);
513 wa.u.override_redirect = reply->override_redirect;
514 LOG("window = 0x%08x, serial is %d.\n", event->window, event->sequence);
515 add_ignore_event(event->sequence);
517 manage_window(prophs, conn, event->window, wa);
522 * Configure requests are received when the application wants to resize windows on their own.
524 * We generate a synthethic configure notify event to signalize the client its "new" position.
527 int handle_configure_request(void *prophs, xcb_connection_t *conn, xcb_configure_request_event_t *event) {
528 LOG("configure-request, serial %d\n", event->sequence);
529 LOG("event->window = %08x\n", event->window);
530 LOG("application wants to be at %dx%d with %dx%d\n", event->x, event->y, event->width, event->height);
532 Client *client = table_get(byChild, event->window);
533 if (client == NULL) {
534 LOG("This client is not mapped, so we don't care and just tell the client that he will get its size\n");
535 Rect rect = {event->x, event->y, event->width, event->height};
536 fake_configure_notify(conn, rect, event->window);
540 fake_configure_notify(conn, client->child_rect, client->child);
546 * Configuration notifies are only handled because we need to set up ignore for the following
547 * enter notify events
550 int handle_configure_event(void *prophs, xcb_connection_t *conn, xcb_configure_notify_event_t *event) {
551 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
553 LOG("handle_configure_event for window %08x\n", event->window);
554 LOG("event->type = %d, \n", event->response_type);
555 LOG("event->x = %d, ->y = %d, ->width = %d, ->height = %d\n", event->x, event->y, event->width, event->height);
556 add_ignore_event(event->sequence);
558 if (event->event == root) {
559 LOG("reconfigure of the root window, need to xinerama\n");
560 /* FIXME: Somehow, this is occuring too often. Therefore, we check for 0/0,
561 but is there a better way? */
562 if (event->x == 0 && event->y == 0)
563 xinerama_requery_screens(conn);
571 * Our window decorations were unmapped. That means, the window will be killed now,
572 * so we better clean up before.
575 int handle_unmap_notify_event(void *data, xcb_connection_t *conn, xcb_unmap_notify_event_t *event) {
576 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
578 add_ignore_event(event->sequence);
580 Client *client = table_get(byChild, event->window);
581 /* First, we need to check if the client is awaiting an unmap-request which
582 was generated by us reparenting the window. In that case, we just ignore it. */
583 if (client != NULL && client->awaiting_useless_unmap) {
584 LOG("Dropping this unmap request, it was generated by reparenting\n");
585 client->awaiting_useless_unmap = false;
589 LOG("event->window = %08x, event->event = %08x\n", event->window, event->event);
590 LOG("UnmapNotify for 0x%08x (received from 0x%08x)\n", event->window, event->event);
591 if (client == NULL) {
592 LOG("not a managed window. Ignoring.\n");
596 client = table_remove(byChild, event->window);
598 if (client->name != NULL)
601 if (client->container != NULL) {
602 Container *con = client->container;
604 /* If this was the fullscreen client, we need to unset it */
605 if (client->fullscreen)
606 con->workspace->fullscreen_client = NULL;
608 /* Remove the client from the list of clients */
609 remove_client_from_container(conn, client, con);
611 /* Set focus to the last focused client in this container */
612 con->currently_focused = NULL;
613 Client *focus_client;
614 SLIST_FOREACH(focus_client, &(con->workspace->focus_stack), focus_clients)
615 if (focus_client->container == con) {
616 con->currently_focused = focus_client;
617 /* Only if this is the active container, we need to really change focus */
619 set_focus(conn, focus_client);
625 LOG("Removing from dock clients\n");
626 SLIST_REMOVE(&(client->workspace->dock_clients), client, Client, dock_clients);
629 LOG("child of 0x%08x.\n", client->frame);
630 xcb_reparent_window(conn, client->child, root, 0, 0);
631 xcb_destroy_window(conn, client->frame);
633 table_remove(byParent, client->frame);
635 if (client->container != NULL)
636 cleanup_table(conn, client->container->workspace);
646 * Called when a window changes its title
649 int handle_windowname_change(void *data, xcb_connection_t *conn, uint8_t state,
650 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
651 LOG("window's name changed.\n");
652 if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
653 LOG("_NET_WM_NAME not specified, not changing\n");
656 Client *client = table_get(byChild, window);
660 /* Save the old pointer to make the update atomic */
663 asprintf(&new_name, "%.*s", xcb_get_property_value_length(prop), (char*)xcb_get_property_value(prop));
664 /* Convert it to UCS-2 here for not having to convert it later every time we want to pass it to X */
665 char *ucs2_name = convert_utf8_to_ucs2(new_name, &new_len);
666 LOG("Name should change to \"%s\"\n", new_name);
669 /* Check if they are the same and don’t update if so.
670 Note the use of new_len * 2 to check all bytes as each glyph takes 2 bytes.
671 Also note the use of memcmp() instead of strncmp() because the latter stops on nullbytes,
672 but UCS-2 uses nullbytes to fill up glyphs which only use one byte. */
673 if ((new_len == client->name_len) &&
674 (client->name != NULL) &&
675 (memcmp(client->name, ucs2_name, new_len * 2) == 0)) {
676 LOG("Name did not change, not updating\n");
681 char *old_name = client->name;
682 client->name = ucs2_name;
683 client->name_len = new_len;
684 client->uses_net_wm_name = true;
686 if (old_name != NULL)
689 /* If the client is a dock window, we don’t need to render anything */
693 if (client->container->mode == MODE_STACK)
694 render_container(conn, client->container);
695 else decorate_window(conn, client, client->frame, client->titlegc, 0);
702 * We handle legacy window names (titles) which are in COMPOUND_TEXT encoding. However, we
703 * just pass them along, so when containing non-ASCII characters, those will be rendering
704 * incorrectly. In order to correctly render unicode window titles in i3, an application
705 * has to set _NET_WM_NAME, which is in UTF-8 encoding.
707 * On every update, a message is put out to the user, so he may improve the situation and
708 * update applications which display filenames in their title to correctly use
709 * _NET_WM_NAME and therefore support unicode.
712 int handle_windowname_change_legacy(void *data, xcb_connection_t *conn, uint8_t state,
713 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
714 LOG("window's name changed (legacy).\n");
715 if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
716 LOG("prop == NULL\n");
719 Client *client = table_get(byChild, window);
723 if (client->uses_net_wm_name) {
724 LOG("This client is capable of _NET_WM_NAME, ignoring legacy name\n");
728 /* Save the old pointer to make the update atomic */
730 asprintf(&new_name, "%.*s", xcb_get_property_value_length(prop), (char*)xcb_get_property_value(prop));
731 /* Convert it to UCS-2 here for not having to convert it later every time we want to pass it to X */
732 LOG("Name should change to \"%s\"\n", new_name);
734 /* Check if they are the same and don’t update if so. */
735 if (client->name != NULL &&
736 strlen(new_name) == strlen(client->name) &&
737 strcmp(client->name, new_name) == 0) {
738 LOG("Name did not change, not updating\n");
743 LOG("Using legacy window title. Note that in order to get Unicode window titles in i3,"
744 "the application has to set _NET_WM_NAME which is in UTF-8 encoding.\n");
746 char *old_name = client->name;
747 client->name = new_name;
748 client->name_len = -1;
750 if (old_name != NULL)
753 /* If the client is a dock window, we don’t need to render anything */
757 if (client->container->mode == MODE_STACK)
758 render_container(conn, client->container);
759 else decorate_window(conn, client, client->frame, client->titlegc, 0);
766 * Expose event means we should redraw our windows (= title bar)
769 int handle_expose_event(void *data, xcb_connection_t *conn, xcb_expose_event_t *event) {
770 /* event->count is the number of minimum remaining expose events for this window, so we
771 skip all events but the last one */
772 if (event->count != 0)
774 LOG("window = %08x\n", event->window);
776 Client *client = table_get(byParent, event->window);
777 if (client == NULL) {
778 /* There was no client in the table, so this is probably an expose event for
779 one of our stack_windows. */
780 struct Stack_Window *stack_win;
781 SLIST_FOREACH(stack_win, &stack_wins, stack_windows)
782 if (stack_win->window == event->window) {
783 render_container(conn, stack_win->container);
787 /* …or one of the bars? */
789 TAILQ_FOREACH(screen, virtual_screens, screens) {
790 if (screen->bar == event->window) {
797 LOG("got client %s\n", client->name);
799 LOG("this is a dock\n");
803 if (client->container->mode != MODE_STACK)
804 decorate_window(conn, client, client->frame, client->titlegc, 0);
806 uint32_t background_color;
807 /* Distinguish if the window is currently focused… */
808 if (CUR_CELL->currently_focused == client)
809 background_color = get_colorpixel(conn, "#285577");
810 /* …or if it is the focused window in a not focused container */
811 else background_color = get_colorpixel(conn, "#555555");
813 /* Set foreground color to current focused color, line width to 2 */
814 uint32_t values[] = {background_color, 2};
815 xcb_change_gc(conn, client->titlegc, XCB_GC_FOREGROUND | XCB_GC_LINE_WIDTH, values);
817 /* Draw the border, the ±1 is for line width = 2 */
818 xcb_point_t points[] = {{1, 0}, /* left upper edge */
819 {1, client->rect.height-1}, /* left bottom edge */
820 {client->rect.width-1, client->rect.height-1}, /* right bottom edge */
821 {client->rect.width-1, 0}}; /* right upper edge */
822 xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, client->frame, client->titlegc, 4, points);
824 /* Draw a black background */
825 xcb_change_gc_single(conn, client->titlegc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#000000"));
826 xcb_rectangle_t crect = {2, 0, client->rect.width - (2 + 2), client->rect.height - 2};
827 xcb_poly_fill_rectangle(conn, client->frame, client->titlegc, 1, &crect);
834 * Handle client messages (EWMH)
837 int handle_client_message(void *data, xcb_connection_t *conn, xcb_client_message_event_t *event) {
838 LOG("client_message\n");
840 if (event->type == atoms[_NET_WM_STATE]) {
841 if (event->format != 32 || event->data.data32[1] != atoms[_NET_WM_STATE_FULLSCREEN])
846 Client *client = table_get(byChild, event->window);
850 /* Check if the fullscreen state should be toggled */
851 if ((client->fullscreen &&
852 (event->data.data32[0] == _NET_WM_STATE_REMOVE ||
853 event->data.data32[0] == _NET_WM_STATE_TOGGLE)) ||
854 (!client->fullscreen &&
855 (event->data.data32[0] == _NET_WM_STATE_ADD ||
856 event->data.data32[0] == _NET_WM_STATE_TOGGLE)))
857 toggle_fullscreen(conn, client);
859 LOG("unhandled clientmessage\n");
866 int handle_window_type(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
867 xcb_atom_t atom, xcb_get_property_reply_t *property) {
868 /* TODO: Implement this one. To do this, implement a little test program which sleep(1)s
869 before changing this property. */
870 LOG("_NET_WM_WINDOW_TYPE changed, this is not yet implemented.\n");
875 * Handles the size hints set by a window, but currently only the part necessary for displaying
876 * clients proportionally inside their frames (mplayer for example)
878 * See ICCCM 4.1.2.3 for more details
881 int handle_normal_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
882 xcb_atom_t name, xcb_get_property_reply_t *reply) {
883 LOG("handle_normal_hints\n");
884 Client *client = table_get(byChild, window);
885 if (client == NULL) {
886 LOG("No such client\n");
889 xcb_size_hints_t size_hints;
891 /* If the hints were already in this event, use them, if not, request them */
893 xcb_get_wm_size_hints_from_reply(&size_hints, reply);
895 xcb_get_wm_normal_hints_reply(conn, xcb_get_wm_normal_hints_unchecked(conn, client->child), &size_hints, NULL);
897 /* If no aspect ratio was set or if it was invalid, we ignore the hints */
898 if (!(size_hints.flags & XCB_SIZE_HINT_P_ASPECT) ||
899 (size_hints.min_aspect_num <= 0) ||
900 (size_hints.min_aspect_den <= 0)) {
901 LOG("No aspect ratio set, ignoring\n");
905 LOG("window is %08x / %s\n", client->child, client->name);
907 int base_width = 0, base_height = 0,
908 min_width = 0, min_height = 0;
910 /* base_width/height are the desired size of the window.
911 We check if either the program-specified size or the program-specified
912 min-size is available */
913 if (size_hints.flags & XCB_SIZE_HINT_P_SIZE) {
914 base_width = size_hints.base_width;
915 base_height = size_hints.base_height;
916 } else if (size_hints.flags & XCB_SIZE_HINT_P_MIN_SIZE) {
917 base_width = size_hints.min_width;
918 base_height = size_hints.min_height;
921 if (size_hints.flags & XCB_SIZE_HINT_P_MIN_SIZE) {
922 min_width = size_hints.min_width;
923 min_height = size_hints.min_height;
924 } else if (size_hints.flags & XCB_SIZE_HINT_P_SIZE) {
925 min_width = size_hints.base_width;
926 min_height = size_hints.base_height;
929 double width = client->rect.width - base_width;
930 double height = client->rect.height - base_height;
931 /* Convert numerator/denominator to a double */
932 double min_aspect = (double)size_hints.min_aspect_num / size_hints.min_aspect_den;
933 double max_aspect = (double)size_hints.max_aspect_num / size_hints.min_aspect_den;
935 LOG("min_aspect = %f, max_aspect = %f\n", min_aspect, max_aspect);
936 LOG("width = %f, height = %f\n", width, height);
938 /* Sanity checks, this is user-input, in a way */
939 if (max_aspect <= 0 || min_aspect <= 0 || height == 0 || (width / height) <= 0)
942 /* Check if we need to set proportional_* variables using the correct ratio */
943 if ((width / height) < min_aspect) {
944 client->proportional_width = width;
945 client->proportional_height = width / min_aspect;
946 } else if ((width / height) > max_aspect) {
947 client->proportional_width = width;
948 client->proportional_height = width / max_aspect;
951 client->force_reconfigure = true;
953 if (client->container != NULL) {
954 render_container(conn, client->container);