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);
80 * Due to bindings like Mode_switch + <a>, we need to bind some keys in XCB_GRAB_MODE_SYNC.
81 * Therefore, we just replay all key presses.
84 int handle_key_release(void *ignored, xcb_connection_t *conn, xcb_key_release_event_t *event) {
85 LOG("got key release, just passing\n");
86 xcb_allow_events(conn, XCB_ALLOW_REPLAY_KEYBOARD, event->time);
92 * There was a key press. We compare this key code with our bindings table and pass
93 * the bound action to parse_command().
96 int handle_key_press(void *ignored, xcb_connection_t *conn, xcb_key_press_event_t *event) {
97 LOG("Keypress %d\n", event->detail);
99 /* We need to get the keysym group (There are group 1 to group 4, each holding
100 two keysyms (without shift and with shift) using Xkb because X fails to
101 provide them reliably (it works in Xephyr, it does not in real X) */
103 if (XkbGetState(xkbdpy, XkbUseCoreKbd, &state) == Success && (state.group+1) == 2)
106 LOG("state %d\n", event->state);
108 /* Remove the numlock bit, all other bits are modifiers we can bind to */
109 uint16_t state_filtered = event->state & ~XCB_MOD_MASK_LOCK;
111 /* Find the binding */
113 TAILQ_FOREACH(bind, &bindings, bindings)
114 if (bind->keycode == event->detail && bind->mods == state_filtered)
117 /* No match? Then it was an actively grabbed key, that is with Mode_switch, and
118 the user did not press Mode_switch, so just pass it… */
119 if (bind == TAILQ_END(&bindings)) {
120 xcb_allow_events(conn, ReplayKeyboard, event->time);
125 parse_command(conn, bind->command);
126 if (event->state & 0x2) {
127 LOG("Mode_switch -> allow_events(SyncKeyboard)\n");
128 xcb_allow_events(conn, SyncKeyboard, event->time);
136 * When the user moves the mouse pointer onto a window, this callback gets called.
139 int handle_enter_notify(void *ignored, xcb_connection_t *conn, xcb_enter_notify_event_t *event) {
140 LOG("enter_notify for %08x, mode = %d, detail %d, serial %d\n", event->event, event->mode, event->detail, event->sequence);
141 if (event->mode != XCB_NOTIFY_MODE_NORMAL) {
142 LOG("This was not a normal notify, ignoring\n");
145 /* Some events are not interesting, because they were not generated actively by the
146 user, but be reconfiguration of windows */
147 if (event_is_ignored(event->sequence))
150 /* This was either a focus for a client’s parent (= titlebar)… */
151 Client *client = table_get(byParent, event->event);
152 /* …or the client itself */
154 client = table_get(byChild, event->event);
156 /* If not, then the user moved his cursor to the root window. In that case, we adjust c_ws */
157 if (client == NULL) {
158 LOG("Getting screen at %d x %d\n", event->root_x, event->root_y);
159 i3Screen *screen = get_screen_containing(event->root_x, event->root_y);
160 if (screen == NULL) {
161 LOG("ERROR: No such screen\n");
164 c_ws = &workspaces[screen->current_workspace];
165 LOG("We're now on virtual screen number %d\n", screen->num);
169 /* Do plausibility checks: This event may be useless for us if it occurs on a window
170 which is in a stacked container but not the focused one */
171 if (client->container != NULL &&
172 client->container->mode == MODE_STACK &&
173 client->container->currently_focused != client) {
174 LOG("Plausibility check says: no\n");
178 set_focus(conn, client);
183 int handle_button_press(void *ignored, xcb_connection_t *conn, xcb_button_press_event_t *event) {
184 LOG("button press!\n");
185 /* This was either a focus for a client’s parent (= titlebar)… */
186 Client *client = table_get(byChild, event->event);
187 bool border_click = false;
188 if (client == NULL) {
189 client = table_get(byParent, event->event);
192 if (client == NULL) {
193 /* The client was neither on a client’s titlebar nor on a client itself, maybe on a stack_window? */
194 struct Stack_Window *stack_win;
195 SLIST_FOREACH(stack_win, &stack_wins, stack_windows)
196 if (stack_win->window == event->event) {
197 /* A stack window was clicked. We calculate the destination client by
198 dividing the Y position of the event through the height of a window
199 decoration and then set the focus to this client. */
200 i3Font *font = load_font(conn, config.font);
201 int decoration_height = (font->height + 2 + 2);
202 int destination = (event->event_y / decoration_height),
206 LOG("Click on stack_win for client %d\n", destination);
207 CIRCLEQ_FOREACH(client, &(stack_win->container->clients), clients)
208 if (c++ == destination) {
209 set_focus(conn, client);
219 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
220 xcb_screen_t *root_screen = xcb_setup_roots_iterator(xcb_get_setup(conn)).data;
222 /* Set focus in any case */
223 set_focus(conn, client);
225 /* Let’s see if this was on the borders (= resize). If not, we’re done */
226 LOG("press button on x=%d, y=%d\n", event->event_x, event->event_y);
228 Container *con = client->container,
231 enum { O_HORIZONTAL, O_VERTICAL } orientation = O_VERTICAL;
235 LOG("dock. done.\n");
236 xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time);
241 LOG("event->event_x = %d, client->rect.width = %d\n", event->event_x, client->rect.width);
244 LOG("client. done.\n");
245 xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time);
250 /* Don’t handle events inside the titlebar, only borders are interesting */
251 i3Font *font = load_font(conn, config.font);
252 if (event->event_y >= 2 && event->event_y <= (font->height + 2 + 2)) {
253 LOG("click on titlebar\n");
257 if (event->event_y < 2) {
258 /* This was a press on the top border */
261 first = con->workspace->table[con->col][con->row-1];
263 orientation = O_HORIZONTAL;
264 } else if (event->event_y >= (client->rect.height - 2)) {
266 if (con->row == (con->workspace->rows-1))
269 second = con->workspace->table[con->col][con->row+1];
270 orientation = O_HORIZONTAL;
271 } else if (event->event_x <= 2) {
275 first = con->workspace->table[con->col-1][con->row];
277 } else if (event->event_x > 2) {
279 if (con->col == (con->workspace->cols-1))
282 second = con->workspace->table[con->col+1][con->row];
288 mask = XCB_CW_OVERRIDE_REDIRECT;
291 /* Open a new window, the resizebar. Grab the pointer and move the window around
292 as the user moves the pointer. */
293 Rect grabrect = {0, 0, root_screen->width_in_pixels, root_screen->height_in_pixels};
294 xcb_window_t grabwin = create_window(conn, grabrect, XCB_WINDOW_CLASS_INPUT_ONLY, -1, mask, values);
297 if (orientation == O_VERTICAL) {
298 helprect.x = event->root_x;
301 helprect.height = root_screen->height_in_pixels; /* this has to be the cell’s height */
302 new_position = event->root_x;
305 helprect.y = event->root_y;
306 helprect.width = root_screen->width_in_pixels; /* this has to be the cell’s width */
308 new_position = event->root_y;
311 mask = XCB_CW_BACK_PIXEL;
312 values[0] = get_colorpixel(conn, "#4c7899");
314 mask |= XCB_CW_OVERRIDE_REDIRECT;
317 xcb_window_t helpwin = create_window(conn, helprect, XCB_WINDOW_CLASS_INPUT_OUTPUT,
318 (orientation == O_VERTICAL ?
319 XCB_CURSOR_SB_V_DOUBLE_ARROW :
320 XCB_CURSOR_SB_H_DOUBLE_ARROW), mask, values);
322 xcb_circulate_window(conn, XCB_CIRCULATE_RAISE_LOWEST, helpwin);
324 xcb_grab_pointer(conn, false, root, XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_POINTER_MOTION,
325 XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC, grabwin, XCB_NONE, XCB_CURRENT_TIME);
329 xcb_generic_event_t *inside_event;
330 /* I’ve always wanted to have my own eventhandler… */
331 while ((inside_event = xcb_wait_for_event(conn))) {
332 /* Same as get_event_handler in xcb */
333 int nr = inside_event->response_type;
335 /* An error occured */
336 handle_event(NULL, conn, inside_event);
341 nr &= XCB_EVENT_RESPONSE_TYPE_MASK;
344 /* Check if we need to escape this loop */
345 if (nr == XCB_BUTTON_RELEASE)
349 case XCB_MOTION_NOTIFY:
350 if (orientation == O_VERTICAL) {
351 values[0] = new_position = ((xcb_motion_notify_event_t*)inside_event)->root_x;
352 xcb_configure_window(conn, helpwin, XCB_CONFIG_WINDOW_X, values);
354 values[0] = new_position = ((xcb_motion_notify_event_t*)inside_event)->root_y;
355 xcb_configure_window(conn, helpwin, XCB_CONFIG_WINDOW_Y, values);
361 LOG("Passing to original handler\n");
362 /* Use original handler */
363 xcb_event_handle(&evenths, inside_event);
369 xcb_ungrab_pointer(conn, XCB_CURRENT_TIME);
370 xcb_destroy_window(conn, helpwin);
371 xcb_destroy_window(conn, grabwin);
374 Workspace *ws = con->workspace;
375 if (orientation == O_VERTICAL) {
376 LOG("Resize was from X = %d to X = %d\n", event->root_x, new_position);
377 if (event->root_x == new_position) {
378 LOG("Nothing changed, not updating anything\n");
382 /* Convert 0 (for default width_factor) to actual numbers */
383 if (first->width_factor == 0)
384 first->width_factor = ((float)ws->rect.width / ws->cols) / ws->rect.width;
385 if (second->width_factor == 0)
386 second->width_factor = ((float)ws->rect.width / ws->cols) / ws->rect.width;
388 first->width_factor *= (float)(first->width + (new_position - event->root_x)) / first->width;
389 second->width_factor *= (float)(second->width - (new_position - event->root_x)) / second->width;
391 LOG("Resize was from Y = %d to Y = %d\n", event->root_y, new_position);
392 if (event->root_y == new_position) {
393 LOG("Nothing changed, not updating anything\n");
397 /* Convert 0 (for default height_factor) to actual numbers */
398 if (first->height_factor == 0)
399 first->height_factor = ((float)ws->rect.height / ws->rows) / ws->rect.height;
400 if (second->height_factor == 0)
401 second->height_factor = ((float)ws->rect.height / ws->rows) / ws->rect.height;
403 first->height_factor *= (float)(first->height + (new_position - event->root_y)) / first->height;
404 second->height_factor *= (float)(second->height - (new_position - event->root_y)) / second->height;
413 * A new window appeared on the screen (=was mapped), so let’s manage it.
416 int handle_map_request(void *prophs, xcb_connection_t *conn, xcb_map_request_event_t *event) {
417 xcb_get_window_attributes_cookie_t cookie;
418 xcb_get_window_attributes_reply_t *reply;
420 cookie = xcb_get_window_attributes_unchecked(conn, event->window);
422 if ((reply = xcb_get_window_attributes_reply(conn, cookie, NULL)) == NULL) {
423 LOG("Could not get window attributes\n");
427 window_attributes_t wa = { TAG_VALUE };
428 LOG("override_redirect = %d\n", reply->override_redirect);
429 wa.u.override_redirect = reply->override_redirect;
430 LOG("window = 0x%08x, serial is %d.\n", event->window, event->sequence);
431 add_ignore_event(event->sequence);
433 manage_window(prophs, conn, event->window, wa);
438 * Configure requests are received when the application wants to resize windows on their own.
440 * We generate a synthethic configure notify event to signalize the client its "new" position.
443 int handle_configure_request(void *prophs, xcb_connection_t *conn, xcb_configure_request_event_t *event) {
444 LOG("configure-request, serial %d\n", event->sequence);
445 LOG("event->window = %08x\n", event->window);
446 LOG("application wants to be at %dx%d with %dx%d\n", event->x, event->y, event->width, event->height);
448 Client *client = table_get(byChild, event->window);
449 if (client == NULL) {
450 LOG("This client is not mapped, so we don't care and just tell the client that he will get its size\n");
451 Rect rect = {event->x, event->y, event->width, event->height};
452 fake_configure_notify(conn, rect, event->window);
456 fake_configure_notify(conn, client->child_rect, client->child);
458 LOG("Told the client to stay at %dx%d with size %dx%d\n",
459 client->child_rect.x, client->child_rect.y, client->child_rect.width, client->child_rect.height);
465 * Configuration notifies are only handled because we need to set up ignore for the following
466 * enter notify events
469 int handle_configure_event(void *prophs, xcb_connection_t *conn, xcb_configure_notify_event_t *event) {
470 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
472 LOG("handle_configure_event for window %08x\n", event->window);
473 LOG("event->type = %d, \n", event->response_type);
474 LOG("event->x = %d, ->y = %d, ->width = %d, ->height = %d\n", event->x, event->y, event->width, event->height);
475 add_ignore_event(event->sequence);
477 if (event->event == root) {
478 LOG("reconfigure of the root window, need to xinerama\n");
479 /* FIXME: Somehow, this is occuring too often. Therefore, we check for 0/0,
480 but is there a better way? */
481 if (event->x == 0 && event->y == 0)
482 xinerama_requery_screens(conn);
490 * Our window decorations were unmapped. That means, the window will be killed now,
491 * so we better clean up before.
494 int handle_unmap_notify_event(void *data, xcb_connection_t *conn, xcb_unmap_notify_event_t *event) {
495 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
497 add_ignore_event(event->sequence);
499 Client *client = table_get(byChild, event->window);
500 /* First, we need to check if the client is awaiting an unmap-request which
501 was generated by us reparenting the window. In that case, we just ignore it. */
502 if (client != NULL && client->awaiting_useless_unmap) {
503 LOG("Dropping this unmap request, it was generated by reparenting\n");
504 client->awaiting_useless_unmap = false;
508 LOG("event->window = %08x, event->event = %08x\n", event->window, event->event);
509 LOG("UnmapNotify for 0x%08x (received from 0x%08x)\n", event->window, event->event);
510 if (client == NULL) {
511 LOG("not a managed window. Ignoring.\n");
515 client = table_remove(byChild, event->window);
517 if (client->name != NULL)
520 if (client->container != NULL) {
521 Container *con = client->container;
523 /* If this was the fullscreen client, we need to unset it */
524 if (client->fullscreen)
525 con->workspace->fullscreen_client = NULL;
527 /* Remove the client from the list of clients */
528 remove_client_from_container(conn, client, con);
530 /* Remove from the focus stack */
531 LOG("Removing from focus stack\n");
532 SLIST_REMOVE(&(con->workspace->focus_stack), client, Client, focus_clients);
534 /* Set focus to the last focused client in this container */
535 con->currently_focused = NULL;
536 Client *focus_client;
537 SLIST_FOREACH(focus_client, &(con->workspace->focus_stack), focus_clients)
538 if (focus_client->container == con) {
539 con->currently_focused = focus_client;
540 set_focus(conn, focus_client);
546 LOG("Removing from dock clients\n");
547 SLIST_REMOVE(&(client->workspace->dock_clients), client, Client, dock_clients);
550 LOG("child of 0x%08x.\n", client->frame);
551 xcb_reparent_window(conn, client->child, root, 0, 0);
552 xcb_destroy_window(conn, client->frame);
554 table_remove(byParent, client->frame);
556 if (client->container != NULL)
557 cleanup_table(conn, client->container->workspace);
567 * Called when a window changes its title
570 int handle_windowname_change(void *data, xcb_connection_t *conn, uint8_t state,
571 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
572 LOG("window's name changed.\n");
573 if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
574 LOG("_NET_WM_NAME not specified, not changing\n");
577 Client *client = table_get(byChild, window);
581 /* Save the old pointer to make the update atomic */
584 asprintf(&new_name, "%.*s", xcb_get_property_value_length(prop), (char*)xcb_get_property_value(prop));
585 /* Convert it to UCS-2 here for not having to convert it later every time we want to pass it to X */
586 char *ucs2_name = convert_utf8_to_ucs2(new_name, &new_len);
587 LOG("Name should change to \"%s\"\n", new_name);
590 /* Check if they are the same and don’t update if so.
591 Note the use of new_len * 2 to check all bytes as each glyph takes 2 bytes.
592 Also note the use of memcmp() instead of strncmp() because the latter stops on nullbytes,
593 but UCS-2 uses nullbytes to fill up glyphs which only use one byte. */
594 if ((new_len == client->name_len) &&
595 (client->name != NULL) &&
596 (memcmp(client->name, ucs2_name, new_len * 2) == 0)) {
597 LOG("Name did not change, not updating\n");
602 char *old_name = client->name;
603 client->name = ucs2_name;
604 client->name_len = new_len;
605 client->uses_net_wm_name = true;
607 if (old_name != NULL)
610 /* If the client is a dock window, we don’t need to render anything */
614 if (client->container->mode == MODE_STACK)
615 render_container(conn, client->container);
616 else decorate_window(conn, client, client->frame, client->titlegc, 0);
623 * We handle legacy window names (titles) which are in COMPOUND_TEXT encoding. However, we
624 * just pass them along, so when containing non-ASCII characters, those will be rendering
625 * incorrectly. In order to correctly render unicode window titles in i3, an application
626 * has to set _NET_WM_NAME, which is in UTF-8 encoding.
628 * On every update, a message is put out to the user, so he may improve the situation and
629 * update applications which display filenames in their title to correctly use
630 * _NET_WM_NAME and therefore support unicode.
633 int handle_windowname_change_legacy(void *data, xcb_connection_t *conn, uint8_t state,
634 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
635 LOG("window's name changed (legacy).\n");
636 if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
637 LOG("prop == NULL\n");
640 Client *client = table_get(byChild, window);
644 if (client->uses_net_wm_name) {
645 LOG("This client is capable of _NET_WM_NAME, ignoring legacy name\n");
649 /* Save the old pointer to make the update atomic */
652 asprintf(&new_name, "%.*s", xcb_get_property_value_length(prop), (char*)xcb_get_property_value(prop));
653 /* Convert it to UCS-2 here for not having to convert it later every time we want to pass it to X */
654 LOG("Name should change to \"%s\"\n", new_name);
656 /* Check if they are the same and don’t update if so. */
657 if (client->name != NULL &&
658 strlen(new_name) == strlen(client->name) &&
659 strcmp(client->name, new_name) == 0) {
660 LOG("Name did not change, not updating\n");
665 LOG("Using legacy window title. Note that in order to get Unicode window titles in i3,"
666 "the application has to set _NET_WM_NAME which is in UTF-8 encoding.\n");
668 char *old_name = client->name;
669 client->name = new_name;
670 client->name_len = -1;
672 if (old_name != NULL)
675 /* If the client is a dock window, we don’t need to render anything */
679 if (client->container->mode == MODE_STACK)
680 render_container(conn, client->container);
681 else decorate_window(conn, client, client->frame, client->titlegc, 0);
688 * Expose event means we should redraw our windows (= title bar)
691 int handle_expose_event(void *data, xcb_connection_t *conn, xcb_expose_event_t *event) {
692 /* event->count is the number of minimum remaining expose events for this window, so we
693 skip all events but the last one */
694 if (event->count != 0)
696 LOG("window = %08x\n", event->window);
698 Client *client = table_get(byParent, event->window);
699 if (client == NULL) {
700 /* There was no client in the table, so this is probably an expose event for
701 one of our stack_windows. */
702 struct Stack_Window *stack_win;
703 SLIST_FOREACH(stack_win, &stack_wins, stack_windows)
704 if (stack_win->window == event->window) {
705 render_container(conn, stack_win->container);
709 /* …or one of the bars? */
711 TAILQ_FOREACH(screen, virtual_screens, screens) {
712 if (screen->bar == event->window) {
719 LOG("got client %s\n", client->name);
721 LOG("this is a dock\n");
725 if (client->container->mode != MODE_STACK)
726 decorate_window(conn, client, client->frame, client->titlegc, 0);
728 uint32_t background_color;
729 /* Distinguish if the window is currently focused… */
730 if (CUR_CELL->currently_focused == client)
731 background_color = get_colorpixel(conn, "#285577");
732 /* …or if it is the focused window in a not focused container */
733 else background_color = get_colorpixel(conn, "#555555");
735 /* Set foreground color to current focused color, line width to 2 */
736 uint32_t values[] = {background_color, 2};
737 xcb_change_gc(conn, client->titlegc, XCB_GC_FOREGROUND | XCB_GC_LINE_WIDTH, values);
739 /* Draw the border, the ±1 is for line width = 2 */
740 xcb_point_t points[] = {{1, 0}, /* left upper edge */
741 {1, client->rect.height-1}, /* left bottom edge */
742 {client->rect.width-1, client->rect.height-1}, /* right bottom edge */
743 {client->rect.width-1, 0}}; /* right upper edge */
744 xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, client->frame, client->titlegc, 4, points);
746 /* Draw a black background */
747 xcb_change_gc_single(conn, client->titlegc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#000000"));
748 xcb_rectangle_t crect = {2, 0, client->rect.width - (2 + 2), client->rect.height - 2};
749 xcb_poly_fill_rectangle(conn, client->frame, client->titlegc, 1, &crect);
756 * Handle client messages (EWMH)
759 int handle_client_message(void *data, xcb_connection_t *conn, xcb_client_message_event_t *event) {
760 LOG("client_message\n");
762 if (event->type == atoms[_NET_WM_STATE]) {
763 if (event->format != 32 || event->data.data32[1] != atoms[_NET_WM_STATE_FULLSCREEN])
768 Client *client = table_get(byChild, event->window);
772 /* Check if the fullscreen state should be toggled */
773 if ((client->fullscreen &&
774 (event->data.data32[0] == _NET_WM_STATE_REMOVE ||
775 event->data.data32[0] == _NET_WM_STATE_TOGGLE)) ||
776 (!client->fullscreen &&
777 (event->data.data32[0] == _NET_WM_STATE_ADD ||
778 event->data.data32[0] == _NET_WM_STATE_TOGGLE)))
779 toggle_fullscreen(conn, client);
781 LOG("unhandled clientmessage\n");
788 int handle_window_type(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
789 xcb_atom_t atom, xcb_get_property_reply_t *property) {
790 /* TODO: Implement this one. To do this, implement a little test program which sleep(1)s
791 before changing this property. */
792 LOG("_NET_WM_WINDOW_TYPE changed, this is not yet implemented.\n");
797 * Handles the size hints set by a window, but currently only the part necessary for displaying
798 * clients proportionally inside their frames (mplayer for example)
800 * See ICCCM 4.1.2.3 for more details
803 int handle_normal_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
804 xcb_atom_t name, xcb_get_property_reply_t *reply) {
805 LOG("handle_normal_hints\n");
806 Client *client = table_get(byChild, window);
807 if (client == NULL) {
808 LOG("No such client\n");
811 xcb_size_hints_t size_hints;
813 /* If the hints were already in this event, use them, if not, request them */
815 xcb_get_wm_size_hints_from_reply(&size_hints, reply);
817 xcb_get_wm_normal_hints_reply(conn, xcb_get_wm_normal_hints_unchecked(conn, client->child), &size_hints, NULL);
819 /* If no aspect ratio was set or if it was invalid, we ignore the hints */
820 if (!(size_hints.flags & XCB_SIZE_HINT_P_ASPECT) ||
821 (size_hints.min_aspect_num <= 0) ||
822 (size_hints.min_aspect_den <= 0)) {
823 LOG("No aspect ratio set, ignoring\n");
827 LOG("window is %08x / %s\n", client->child, client->name);
829 int base_width = 0, base_height = 0,
830 min_width = 0, min_height = 0;
832 /* base_width/height are the desired size of the window.
833 We check if either the program-specified size or the program-specified
834 min-size is available */
835 if (size_hints.flags & XCB_SIZE_HINT_P_SIZE) {
836 base_width = size_hints.base_width;
837 base_height = size_hints.base_height;
838 } else if (size_hints.flags & XCB_SIZE_HINT_P_MIN_SIZE) {
839 base_width = size_hints.min_width;
840 base_height = size_hints.min_height;
843 if (size_hints.flags & XCB_SIZE_HINT_P_MIN_SIZE) {
844 min_width = size_hints.min_width;
845 min_height = size_hints.min_height;
846 } else if (size_hints.flags & XCB_SIZE_HINT_P_SIZE) {
847 min_width = size_hints.base_width;
848 min_height = size_hints.base_height;
851 double width = client->rect.width - base_width;
852 double height = client->rect.height - base_height;
853 /* Convert numerator/denominator to a double */
854 double min_aspect = (double)size_hints.min_aspect_num / size_hints.min_aspect_den;
855 double max_aspect = (double)size_hints.max_aspect_num / size_hints.min_aspect_den;
857 LOG("min_aspect = %f, max_aspect = %f\n", min_aspect, max_aspect);
858 LOG("width = %f, height = %f\n", width, height);
860 /* Sanity checks, this is user-input, in a way */
861 if (max_aspect <= 0 || min_aspect <= 0 || height == 0 || (width / height) <= 0)
864 /* Check if we need to set proportional_* variables using the correct ratio */
865 if ((width / height) < min_aspect) {
866 client->proportional_width = width;
867 client->proportional_height = width / min_aspect;
868 } else if ((width / height) > max_aspect) {
869 client->proportional_width = width;
870 client->proportional_height = width / max_aspect;
873 client->force_reconfigure = true;
875 if (client->container != NULL) {
876 render_container(conn, client->container);